Release 4.10 fs/nfs/nfs4proc.c

Directory: fs/nfs
/*
 *  fs/nfs/nfs4proc.c
 *
 *  Client-side procedure declarations for NFSv4.
 *
 *  Copyright (c) 2002 The Regents of the University of Michigan.
 *  All rights reserved.
 *
 *  Kendrick Smith <kmsmith@umich.edu>
 *  Andy Adamson   <andros@umich.edu>
 *
 *  Redistribution and use in source and binary forms, with or without
 *  modification, are permitted provided that the following conditions
 *  are met:
 *
 *  1. Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *  2. Redistributions in binary form must reproduce the above copyright
 *     notice, this list of conditions and the following disclaimer in the
 *     documentation and/or other materials provided with the distribution.
 *  3. Neither the name of the University nor the names of its
 *     contributors may be used to endorse or promote products derived
 *     from this software without specific prior written permission.
 *
 *  THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
 *  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 *  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 *  DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 *  FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 *  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 *  SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
 *  BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 *  LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 *  NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 *  SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include <linux/mm.h>
#include <linux/delay.h>
#include <linux/errno.h>
#include <linux/string.h>
#include <linux/ratelimit.h>
#include <linux/printk.h>
#include <linux/slab.h>
#include <linux/sunrpc/clnt.h>
#include <linux/nfs.h>
#include <linux/nfs4.h>
#include <linux/nfs_fs.h>
#include <linux/nfs_page.h>
#include <linux/nfs_mount.h>
#include <linux/namei.h>
#include <linux/mount.h>
#include <linux/module.h>
#include <linux/xattr.h>
#include <linux/utsname.h>
#include <linux/freezer.h>

#include "nfs4_fs.h"
#include "delegation.h"
#include "internal.h"
#include "iostat.h"
#include "callback.h"
#include "pnfs.h"
#include "netns.h"
#include "nfs4idmap.h"
#include "nfs4session.h"
#include "fscache.h"

#include "nfs4trace.h"


#define NFSDBG_FACILITY		NFSDBG_PROC


#define NFS4_POLL_RETRY_MIN	(HZ/10)

#define NFS4_POLL_RETRY_MAX	(15*HZ)

/* file attributes which can be mapped to nfs attributes */

#define NFS4_VALID_ATTRS (ATTR_MODE \
        | ATTR_UID \
        | ATTR_GID \
        | ATTR_SIZE \
        | ATTR_ATIME \
        | ATTR_MTIME \
        | ATTR_CTIME \
        | ATTR_ATIME_SET \
        | ATTR_MTIME_SET)

struct nfs4_opendata;
static int _nfs4_proc_open(struct nfs4_opendata *data);
static int _nfs4_recover_proc_open(struct nfs4_opendata *data);
static int nfs4_do_fsinfo(struct nfs_server *, struct nfs_fh *, struct nfs_fsinfo *);
static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr);
static int nfs4_proc_getattr(struct nfs_server *, struct nfs_fh *, struct nfs_fattr *, struct nfs4_label *label);
static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr, struct nfs4_label *label);
static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred,
			    struct nfs_fattr *fattr, struct iattr *sattr,
			    struct nfs_open_context *ctx, struct nfs4_label *ilabel,
			    struct nfs4_label *olabel);
#ifdef CONFIG_NFS_V4_1
static int nfs41_test_stateid(struct nfs_server *, nfs4_stateid *,
		struct rpc_cred *);
static int nfs41_free_stateid(struct nfs_server *, const nfs4_stateid *,
		struct rpc_cred *, bool);
#endif

#ifdef CONFIG_NFS_V4_SECURITY_LABEL

static inline struct nfs4_label *

nfs4_label_init_security(struct inode *dir, struct dentry *dentry,
	struct iattr *sattr, struct nfs4_label *label)
{
	int err;

	if (label == NULL)
		return NULL;

	if (nfs_server_capable(dir, NFS_CAP_SECURITY_LABEL) == 0)
		return NULL;

	err = security_dentry_init_security(dentry, sattr->ia_mode,
				&dentry->d_name, (void **)&label->label, &label->len);
	if (err == 0)
		return label;

	return NULL;
}
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Total 98 100.00% 1 100.00%


static inline void

nfs4_label_release_security(struct nfs4_label *label)
{
	if (label)
		security_release_secctx(label->label, label->len);
}
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david quigley david quigley 27 100.00% 1 100.00%
Total 27 100.00% 1 100.00%



static inline u32 *nfs4_bitmask(struct nfs_server *server, struct nfs4_label *label)
{
	if (label)
		return server->attr_bitmask;

	return server->attr_bitmask_nl;
}
Contributors
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david quigley david quigley 32 100.00% 1 100.00%
Total 32 100.00% 1 100.00%

#else

static inline struct nfs4_label *

nfs4_label_init_security(struct inode *dir, struct dentry *dentry,
	struct iattr *sattr, struct nfs4_label *l)
{ return NULL; }
Contributors
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david quigley david quigley 32 100.00% 1 100.00%
Total 32 100.00% 1 100.00%


static inline void

nfs4_label_release_security(struct nfs4_label *label)
{ return; }
Contributors
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Total 13 100.00% 1 100.00%


static inline u32 *

nfs4_bitmask(struct nfs_server *server, struct nfs4_label *label)
{ return server->attr_bitmask; }
Contributors
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Total 23 100.00% 1 100.00%

#endif

/* Prevent leaks of NFSv4 errors into userland */


static int nfs4_map_errors(int err)
{
	if (err >= -1000)
		return err;
	switch (err) {
	case -NFS4ERR_RESOURCE:
	case -NFS4ERR_LAYOUTTRYLATER:
	case -NFS4ERR_RECALLCONFLICT:
		return -EREMOTEIO;
	case -NFS4ERR_WRONGSEC:
	case -NFS4ERR_WRONG_CRED:
		return -EPERM;
	case -NFS4ERR_BADOWNER:
	case -NFS4ERR_BADNAME:
		return -EINVAL;
	case -NFS4ERR_SHARE_DENIED:
		return -EACCES;
	case -NFS4ERR_MINOR_VERS_MISMATCH:
		return -EPROTONOSUPPORT;
	case -NFS4ERR_FILE_OPEN:
		return -EBUSY;
	default:
		dprintk("%s could not handle NFSv4 error %d\n",
				__func__, -err);
		break;
	}
	return -EIO;
}

Contributors
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trond myklebust trond myklebust 73 69.52% 6 46.15%
weston andros adamson weston andros adamson 14 13.33% 3 23.08%
bryan schumaker bryan schumaker 8 7.62% 1 7.69%
steve dickson steve dickson 8 7.62% 1 7.69%
harvey harrison harvey harrison 1 0.95% 1 7.69%
wang cong wang cong 1 0.95% 1 7.69%
Total 105 100.00% 13 100.00%

/*
 * This is our standard bitmap for GETATTR requests.
 */

const u32 nfs4_fattr_bitmap[3] = {
	FATTR4_WORD0_TYPE
	| FATTR4_WORD0_CHANGE
	| FATTR4_WORD0_SIZE
	| FATTR4_WORD0_FSID
	| FATTR4_WORD0_FILEID,
	FATTR4_WORD1_MODE
	| FATTR4_WORD1_NUMLINKS
	| FATTR4_WORD1_OWNER
	| FATTR4_WORD1_OWNER_GROUP
	| FATTR4_WORD1_RAWDEV
	| FATTR4_WORD1_SPACE_USED
	| FATTR4_WORD1_TIME_ACCESS
	| FATTR4_WORD1_TIME_METADATA
	| FATTR4_WORD1_TIME_MODIFY
	| FATTR4_WORD1_MOUNTED_ON_FILEID,
#ifdef CONFIG_NFS_V4_SECURITY_LABEL
	FATTR4_WORD2_SECURITY_LABEL
#endif
};


static const u32 nfs4_pnfs_open_bitmap[3] = {
	FATTR4_WORD0_TYPE
	| FATTR4_WORD0_CHANGE
	| FATTR4_WORD0_SIZE
	| FATTR4_WORD0_FSID
	| FATTR4_WORD0_FILEID,
	FATTR4_WORD1_MODE
	| FATTR4_WORD1_NUMLINKS
	| FATTR4_WORD1_OWNER
	| FATTR4_WORD1_OWNER_GROUP
	| FATTR4_WORD1_RAWDEV
	| FATTR4_WORD1_SPACE_USED
	| FATTR4_WORD1_TIME_ACCESS
	| FATTR4_WORD1_TIME_METADATA
	| FATTR4_WORD1_TIME_MODIFY,
	FATTR4_WORD2_MDSTHRESHOLD
#ifdef CONFIG_NFS_V4_SECURITY_LABEL
	| FATTR4_WORD2_SECURITY_LABEL
#endif
};


static const u32 nfs4_open_noattr_bitmap[3] = {
	FATTR4_WORD0_TYPE
	| FATTR4_WORD0_FILEID,
};


const u32 nfs4_statfs_bitmap[3] = {
	FATTR4_WORD0_FILES_AVAIL
	| FATTR4_WORD0_FILES_FREE
	| FATTR4_WORD0_FILES_TOTAL,
	FATTR4_WORD1_SPACE_AVAIL
	| FATTR4_WORD1_SPACE_FREE
	| FATTR4_WORD1_SPACE_TOTAL
};


const u32 nfs4_pathconf_bitmap[3] = {
	FATTR4_WORD0_MAXLINK
	| FATTR4_WORD0_MAXNAME,
	0
};


const u32 nfs4_fsinfo_bitmap[3] = { FATTR4_WORD0_MAXFILESIZE
			| FATTR4_WORD0_MAXREAD
			| FATTR4_WORD0_MAXWRITE
			| FATTR4_WORD0_LEASE_TIME,
			FATTR4_WORD1_TIME_DELTA
			| FATTR4_WORD1_FS_LAYOUT_TYPES,
			FATTR4_WORD2_LAYOUT_BLKSIZE
			| FATTR4_WORD2_CLONE_BLKSIZE
};


const u32 nfs4_fs_locations_bitmap[3] = {
	FATTR4_WORD0_TYPE
	| FATTR4_WORD0_CHANGE
	| FATTR4_WORD0_SIZE
	| FATTR4_WORD0_FSID
	| FATTR4_WORD0_FILEID
	| FATTR4_WORD0_FS_LOCATIONS,
	FATTR4_WORD1_MODE
	| FATTR4_WORD1_NUMLINKS
	| FATTR4_WORD1_OWNER
	| FATTR4_WORD1_OWNER_GROUP
	| FATTR4_WORD1_RAWDEV
	| FATTR4_WORD1_SPACE_USED
	| FATTR4_WORD1_TIME_ACCESS
	| FATTR4_WORD1_TIME_METADATA
	| FATTR4_WORD1_TIME_MODIFY
	| FATTR4_WORD1_MOUNTED_ON_FILEID,
};



static void nfs4_setup_readdir(u64 cookie, __be32 *verifier, struct dentry *dentry,
		struct nfs4_readdir_arg *readdir)
{
	__be32 *start, *p;

	if (cookie > 2) {
		readdir->cookie = cookie;
		memcpy(&readdir->verifier, verifier, sizeof(readdir->verifier));
		return;
	}

	readdir->cookie = 0;
	memset(&readdir->verifier, 0, sizeof(readdir->verifier));
	if (cookie == 2)
		return;
	
	/*
         * NFSv4 servers do not return entries for '.' and '..'
         * Therefore, we fake these entries here.  We let '.'
         * have cookie 0 and '..' have cookie 1.  Note that
         * when talking to the server, we always send cookie 0
         * instead of 1 or 2.
         */
	start = p = kmap_atomic(*readdir->pages);
	
	if (cookie == 0) {
		*p++ = xdr_one;                                  /* next */
		*p++ = xdr_zero;                   /* cookie, first word */
		*p++ = xdr_one;                   /* cookie, second word */
		*p++ = xdr_one;                             /* entry len */
		memcpy(p, ".\0\0\0", 4);                        /* entry */
		p++;
		*p++ = xdr_one;                         /* bitmap length */
		*p++ = htonl(FATTR4_WORD0_FILEID);             /* bitmap */
		*p++ = htonl(8);              /* attribute buffer length */
		p = xdr_encode_hyper(p, NFS_FILEID(d_inode(dentry)));
	}
	
	*p++ = xdr_one;                                  /* next */
	*p++ = xdr_zero;                   /* cookie, first word */
	*p++ = xdr_two;                   /* cookie, second word */
	*p++ = xdr_two;                             /* entry len */
	memcpy(p, "..\0\0", 4);                         /* entry */
	p++;
	*p++ = xdr_one;                         /* bitmap length */
	*p++ = htonl(FATTR4_WORD0_FILEID);             /* bitmap */
	*p++ = htonl(8);              /* attribute buffer length */
	p = xdr_encode_hyper(p, NFS_FILEID(d_inode(dentry->d_parent)));

	readdir->pgbase = (char *)p - (char *)start;
	readdir->count -= readdir->pgbase;
	kunmap_atomic(start);
}

Contributors
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trond myklebust trond myklebust 293 94.52% 3 37.50%
david howells david howells 6 1.94% 1 12.50%
peter staubach peter staubach 6 1.94% 1 12.50%
chuck lever chuck lever 3 0.97% 1 12.50%
al viro al viro 2 0.65% 2 25.00%
Total 310 100.00% 8 100.00%



static void nfs4_test_and_free_stateid(struct nfs_server *server,
		nfs4_stateid *stateid,
		struct rpc_cred *cred)
{
	const struct nfs4_minor_version_ops *ops = server->nfs_client->cl_mvops;

	ops->test_and_free_expired(server, stateid, cred);
}

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Total 43 100.00% 1 100.00%



static void __nfs4_free_revoked_stateid(struct nfs_server *server,
		nfs4_stateid *stateid,
		struct rpc_cred *cred)
{
	stateid->type = NFS4_REVOKED_STATEID_TYPE;
	nfs4_test_and_free_stateid(server, stateid, cred);
}

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Total 35 100.00% 1 100.00%



static void nfs4_free_revoked_stateid(struct nfs_server *server,
		const nfs4_stateid *stateid,
		struct rpc_cred *cred)
{
	nfs4_stateid tmp;

	nfs4_stateid_copy(&tmp, stateid);
	__nfs4_free_revoked_stateid(server, &tmp, cred);
}

Contributors
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trond myklebust trond myklebust 42 100.00% 1 100.00%
Total 42 100.00% 1 100.00%



static long nfs4_update_delay(long *timeout)
{
	long ret;
	if (!timeout)
		return NFS4_POLL_RETRY_MAX;
	if (*timeout <= 0)
		*timeout = NFS4_POLL_RETRY_MIN;
	if (*timeout > NFS4_POLL_RETRY_MAX)
		*timeout = NFS4_POLL_RETRY_MAX;
	ret = *timeout;
	*timeout <<= 1;
	return ret;
}

Contributors
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trond myklebust trond myklebust 32 55.17% 3 75.00%
neil brown neil brown 26 44.83% 1 25.00%
Total 58 100.00% 4 100.00%



static int nfs4_delay(struct rpc_clnt *clnt, long *timeout)
{
	int res = 0;

	might_sleep();

	freezable_schedule_timeout_killable_unsafe(
		nfs4_update_delay(timeout));
	if (fatal_signal_pending(current))
		res = -ERESTARTSYS;
	return res;
}

Contributors
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neil brown neil brown 25 54.35% 1 14.29%
trond myklebust trond myklebust 20 43.48% 5 71.43%
colin cross colin cross 1 2.17% 1 14.29%
Total 46 100.00% 7 100.00%

/* This is the error handling routine for processes that are allowed
 * to sleep.
 */


static int nfs4_do_handle_exception(struct nfs_server *server,
		int errorcode, struct nfs4_exception *exception)
{
	struct nfs_client *clp = server->nfs_client;
	struct nfs4_state *state = exception->state;
	const nfs4_stateid *stateid = exception->stateid;
	struct inode *inode = exception->inode;
	int ret = errorcode;

	exception->delay = 0;
	exception->recovering = 0;
	exception->retry = 0;

	if (stateid == NULL && state != NULL)
		stateid = &state->stateid;

	switch(errorcode) {
		case 0:
			return 0;
		case -NFS4ERR_DELEG_REVOKED:
		case -NFS4ERR_ADMIN_REVOKED:
		case -NFS4ERR_EXPIRED:
		case -NFS4ERR_BAD_STATEID:
			if (inode != NULL && stateid != NULL) {
				nfs_inode_find_state_and_recover(inode,
						stateid);
				goto wait_on_recovery;
			}
		case -NFS4ERR_OPENMODE:
			if (inode) {
				int err;

				err = nfs_async_inode_return_delegation(inode,
						stateid);
				if (err == 0)
					goto wait_on_recovery;
				if (stateid != NULL && stateid->type == NFS4_DELEGATION_STATEID_TYPE) {
					exception->retry = 1;
					break;
				}
			}
			if (state == NULL)
				break;
			ret = nfs4_schedule_stateid_recovery(server, state);
			if (ret < 0)
				break;
			goto wait_on_recovery;
		case -NFS4ERR_STALE_STATEID:
		case -NFS4ERR_STALE_CLIENTID:
			nfs4_schedule_lease_recovery(clp);
			goto wait_on_recovery;
		case -NFS4ERR_MOVED:
			ret = nfs4_schedule_migration_recovery(server);
			if (ret < 0)
				break;
			goto wait_on_recovery;
		case -NFS4ERR_LEASE_MOVED:
			nfs4_schedule_lease_moved_recovery(clp);
			goto wait_on_recovery;
#if defined(CONFIG_NFS_V4_1)
		case -NFS4ERR_BADSESSION:
		case -NFS4ERR_BADSLOT:
		case -NFS4ERR_BAD_HIGH_SLOT:
		case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION:
		case -NFS4ERR_DEADSESSION:
		case -NFS4ERR_SEQ_FALSE_RETRY:
		case -NFS4ERR_SEQ_MISORDERED:
			dprintk("%s ERROR: %d Reset session\n", __func__,
				errorcode);
			nfs4_schedule_session_recovery(clp->cl_session, errorcode);
			goto wait_on_recovery;
#endif /* defined(CONFIG_NFS_V4_1) */
		case -NFS4ERR_FILE_OPEN:
			if (exception->timeout > HZ) {
				/* We have retried a decent amount, time to
                                 * fail
                                 */
				ret = -EBUSY;
				break;
			}
		case -NFS4ERR_DELAY:
			nfs_inc_server_stats(server, NFSIOS_DELAY);
		case -NFS4ERR_GRACE:
		case -NFS4ERR_LAYOUTTRYLATER:
		case -NFS4ERR_RECALLCONFLICT:
			exception->delay = 1;
			return 0;

		case -NFS4ERR_RETRY_UNCACHED_REP:
		case -NFS4ERR_OLD_STATEID:
			exception->retry = 1;
			break;
		case -NFS4ERR_BADOWNER:
			/* The following works around a Linux server bug! */
		case -NFS4ERR_BADNAME:
			if (server->caps & NFS_CAP_UIDGID_NOMAP) {
				server->caps &= ~NFS_CAP_UIDGID_NOMAP;
				exception->retry = 1;
				printk(KERN_WARNING "NFS: v4 server %s "
						"does not accept raw "
						"uid/gids. "
						"Reenabling the idmapper.\n",
						server->nfs_client->cl_hostname);
			}
	}
	/* We failed to handle the error */
	return nfs4_map_errors(ret);
wait_on_recovery:
	exception->recovering = 1;
	return 0;
}

Contributors
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trond myklebust trond myklebust 348 75.16% 18 69.23%
andy adamson andy adamson 53 11.45% 2 7.69%
chuck lever chuck lever 33 7.13% 2 7.69%
neil brown neil brown 17 3.67% 1 3.85%
olga kornievskaia olga kornievskaia 5 1.08% 1 3.85%
jeff layton jeff layton 4 0.86% 1 3.85%
bryan schumaker bryan schumaker 3 0.65% 1 3.85%
Total 463 100.00% 26 100.00%

/* This is the error handling routine for processes that are allowed
 * to sleep.
 */


int nfs4_handle_exception(struct nfs_server *server, int errorcode, struct nfs4_exception *exception)
{
	struct nfs_client *clp = server->nfs_client;
	int ret;

	ret = nfs4_do_handle_exception(server, errorcode, exception);
	if (exception->delay) {
		ret = nfs4_delay(server->client, &exception->timeout);
		goto out_retry;
	}
	if (exception->recovering) {
		ret = nfs4_wait_clnt_recover(clp);
		if (test_bit(NFS_MIG_FAILED, &server->mig_status))
			return -EIO;
		goto out_retry;
	}
	return ret;
out_retry:
	if (ret == 0)
		exception->retry = 1;
	return ret;
}

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trond myklebust trond myklebust 104 86.67% 3 75.00%
chuck lever chuck lever 16 13.33% 1 25.00%
Total 120 100.00% 4 100.00%


static int

nfs4_async_handle_exception(struct rpc_task *task, struct nfs_server *server,
		int errorcode, struct nfs4_exception *exception)
{
	struct nfs_client *clp = server->nfs_client;
	int ret;

	ret = nfs4_do_handle_exception(server, errorcode, exception);
	if (exception->delay) {
		rpc_delay(task, nfs4_update_delay(&exception->timeout));
		goto out_retry;
	}
	if (exception->recovering) {
		rpc_sleep_on(&clp->cl_rpcwaitq, task, NULL);
		if (test_bit(NFS4CLNT_MANAGER_RUNNING, &clp->cl_state) == 0)
			rpc_wake_up_queued_task(&clp->cl_rpcwaitq, task);
		goto out_retry;
	}
	if (test_bit(NFS_MIG_FAILED, &server->mig_status))
		ret = -EIO;
	return ret;
out_retry:
	if (ret == 0)
		exception->retry = 1;
	return ret;
}

Contributors
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weston andros adamson weston andros adamson 13 8.39% 1 33.33%
Total 155 100.00% 3 100.00%


static int

nfs4_async_handle_error(struct rpc_task *task, struct nfs_server *server,
			struct nfs4_state *state, long *timeout)
{
	struct nfs4_exception exception = {
		.state = state,
        };

	if (task->tk_status >= 0)
		return 0;
	if (timeout)
		exception.timeout = *timeout;
	task->tk_status = nfs4_async_handle_exception(task, server,
			task->tk_status,
			&exception);
	if (exception.delay && timeout)
		*timeout = exception.timeout;
	if (exception.retry)
		return -EAGAIN;
	return 0;
}

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Total 104 100.00% 3 100.00%

/*
 * Return 'true' if 'clp' is using an rpc_client that is integrity protected
 * or 'false' otherwise.
 */


static bool _nfs4_is_integrity_protected(struct nfs_client *clp)
{
	rpc_authflavor_t flavor = clp->cl_rpcclient->cl_auth->au_flavor;

	if (flavor == RPC_AUTH_GSS_KRB5I ||
	    flavor == RPC_AUTH_GSS_KRB5P)
		return true;

	return false;
}

Contributors
Person Tokens Prop Commits CommitProp
weston andros adamson weston andros adamson 38 100.00% 1 100.00%
Total 38 100.00% 1 100.00%



static void do_renew_lease(struct nfs_client *clp, unsigned long timestamp)
{
	spin_lock(&clp->cl_lock);
	if (time_before(clp->cl_last_renewal,timestamp))
		clp->cl_last_renewal = timestamp;
	spin_unlock(&clp->cl_lock);
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 48 100.00% 2 100.00%
Total 48 100.00% 2 100.00%



static void renew_lease(const struct nfs_server *server, unsigned long timestamp)
{
	struct nfs_client *clp = server->nfs_client;

	if (!nfs4_has_session(clp))
		do_renew_lease(clp, timestamp);
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 40 100.00% 2 100.00%
Total 40 100.00% 2 100.00%


struct nfs4_call_sync_data {
	
const struct nfs_server *seq_server;
	
struct nfs4_sequence_args *seq_args;
	
struct nfs4_sequence_res *seq_res;
};



void nfs4_init_sequence(struct nfs4_sequence_args *args,
			struct nfs4_sequence_res *res, int cache_reply)
{
	args->sa_slot = NULL;
	args->sa_cache_this = cache_reply;
	args->sa_privileged = 0;

	res->sr_slot = NULL;
}

Contributors
Person Tokens Prop Commits CommitProp
chuck lever chuck lever 42 100.00% 1 100.00%
Total 42 100.00% 1 100.00%



static void nfs4_set_sequence_privileged(struct nfs4_sequence_args *args)
{
	args->sa_privileged = 1;
}

Contributors
Person Tokens Prop Commits CommitProp
chuck lever chuck lever 17 100.00% 1 100.00%
Total 17 100.00% 1 100.00%



int nfs40_setup_sequence(struct nfs4_slot_table *tbl,
			 struct nfs4_sequence_args *args,
			 struct nfs4_sequence_res *res,
			 struct rpc_task *task)
{
	struct nfs4_slot *slot;

	/* slot already allocated? */
	if (res->sr_slot != NULL)
		goto out_start;

	spin_lock(&tbl->slot_tbl_lock);
	if (nfs4_slot_tbl_draining(tbl) && !args->sa_privileged)
		goto out_sleep;

	slot = nfs4_alloc_slot(tbl);
	if (IS_ERR(slot)) {
		if (slot == ERR_PTR(-ENOMEM))
			task->tk_timeout = HZ >> 2;
		goto out_sleep;
	}
	spin_unlock(&tbl->slot_tbl_lock);

	slot->privileged = args->sa_privileged ? 1 : 0;
	args->sa_slot = slot;
	res->sr_slot = slot;

out_start:
	rpc_call_start(task);
	return 0;

out_sleep:
	if (args->sa_privileged)
		rpc_sleep_on_priority(&tbl->slot_tbl_waitq, task,
				NULL, RPC_PRIORITY_PRIVILEGED);
	else
		rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL);
	spin_unlock(&tbl->slot_tbl_lock);
	return -EAGAIN;
}
Contributors
Person Tokens Prop Commits CommitProp
chuck lever chuck lever 177 92.67% 1 33.33%
trond myklebust trond myklebust 12 6.28% 1 33.33%
peng tao peng tao 2 1.05% 1 33.33%
Total 191 100.00% 3 100.00%


EXPORT_SYMBOL_GPL(nfs40_setup_sequence);



static void nfs40_sequence_free_slot(struct nfs4_sequence_res *res)
{
	struct nfs4_slot *slot = res->sr_slot;
	struct nfs4_slot_table *tbl;

	tbl = slot->table;
	spin_lock(&tbl->slot_tbl_lock);
	if (!nfs41_wake_and_assign_slot(tbl, slot))
		nfs4_free_slot(tbl, slot);
	spin_unlock(&tbl->slot_tbl_lock);

	res->sr_slot = NULL;
}

Contributors
Person Tokens Prop Commits CommitProp
chuck lever chuck lever 67 95.71% 1 50.00%
trond myklebust trond myklebust 3 4.29% 1 50.00%
Total 70 100.00% 2 100.00%



static int nfs40_sequence_done(struct rpc_task *task,
			       struct nfs4_sequence_res *res)
{
	if (res->sr_slot != NULL)
		nfs40_sequence_free_slot(res);
	return 1;
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 28 87.50% 1 50.00%
chuck lever chuck lever 4 12.50% 1 50.00%
Total 32 100.00% 2 100.00%

#if defined(CONFIG_NFS_V4_1)



static void nfs41_sequence_free_slot(struct nfs4_sequence_res *res)
{
	struct nfs4_session *session;
	struct nfs4_slot_table *tbl;
	struct nfs4_slot *slot = res->sr_slot;
	bool send_new_highest_used_slotid = false;

	tbl = slot->table;
	session = tbl->session;

	/* Bump the slot sequence number */
	if (slot->seq_done)
		slot->seq_nr++;
	slot->seq_done = 0;

	spin_lock(&tbl->slot_tbl_lock);
	/* Be nice to the server: try to ensure that the last transmitted
         * value for highest_user_slotid <= target_highest_slotid
         */
	if (tbl->highest_used_slotid > tbl->target_highest_slotid)
		send_new_highest_used_slotid = true;

	if (nfs41_wake_and_assign_slot(tbl, slot)) {
		send_new_highest_used_slotid = false;
		goto out_unlock;
	}
	nfs4_free_slot(tbl, slot);

	if (tbl->highest_used_slotid != NFS4_NO_SLOT)
		send_new_highest_used_slotid = false;
out_unlock:
	spin_unlock(&tbl->slot_tbl_lock);
	res->sr_slot = NULL;
	if (send_new_highest_used_slotid)
		nfs41_notify_server(session->clp);
	if (waitqueue_active(&tbl->slot_waitq))
		wake_up_all(&tbl->slot_waitq);
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 138 81.18% 9 64.29%
andy adamson andy adamson 29 17.06% 3 21.43%
benny halevy benny halevy 2 1.18% 1 7.14%
anna schumaker anna schumaker 1 0.59% 1 7.14%
Total 170 100.00% 14 100.00%



static int nfs41_sequence_process(struct rpc_task *task,
		struct nfs4_sequence_res *res)
{
	struct nfs4_session *session;
	struct nfs4_slot *slot = res->sr_slot;
	struct nfs_client *clp;
	bool interrupted = false;
	int ret = 1;

	if (slot == NULL)
		goto out_noaction;
	/* don't increment the sequence number if the task wasn't sent */
	if (!RPC_WAS_SENT(task))
		goto out;

	session = slot->table->session;

	if (slot->interrupted) {
		slot->interrupted = 0;
		interrupted = true;
	}

	trace_nfs4_sequence_done(session, res);
	/* Check the SEQUENCE operation status */
	switch (res->sr_status) {
	case 0:
		/* If previous op on slot was interrupted and we reused
                 * the seq# and got a reply from the cache, then retry
                 */
		if (task->tk_status == -EREMOTEIO && interrupted) {
			++slot->seq_nr;
			goto retry_nowait;
		}
		/* Update the slot's sequence and clientid lease timer */
		slot->seq_done = 1;
		clp = session->clp;
		do_renew_lease(clp, res->sr_timestamp);
		/* Check sequence flags */
		nfs41_handle_sequence_flag_errors(clp, res->sr_status_flags,
				!!slot->privileged);
		nfs41_update_target_slotid(slot->table, slot, res);
		break;
	case 1:
		/*
                 * sr_status remains 1 if an RPC level error occurred.
                 * The server may or may not have processed the sequence
                 * operation..
                 * Mark the slot as having hosted an interrupted RPC call.
                 */
		slot->interrupted = 1;
		goto out;
	case -NFS4ERR_DELAY:
		/* The server detected a resend of the RPC call and
                 * returned NFS4ERR_DELAY as per Section 2.10.6.2
                 * of RFC5661.
                 */
		dprintk("%s: slot=%u seq=%u: Operation in progress\n",
			__func__,
			slot->slot_nr,
			slot->seq_nr);
		goto out_retry;
	case -NFS4ERR_BADSLOT:
		/*
                 * The slot id we used was probably retired. Try again
                 * using a different slot id.
                 */
		goto retry_nowait;
	case -NFS4ERR_SEQ_MISORDERED:
		/*
                 * Was the last operation on this sequence interrupted?
                 * If so, retry after bumping the sequence number.
                 */
		if (interrupted) {
			++slot->seq_nr;
			goto retry_nowait;
		}
		/*
                 * Could this slot have been previously retired?
                 * If so, then the server may be expecting seq_nr = 1!
                 */
		if (slot->seq_nr != 1) {
			slot->seq_nr = 1;
			goto retry_nowait;
		}
		break;
	case -NFS4ERR_SEQ_FALSE_RETRY:
		++slot->seq_nr;
		goto retry_nowait;
	case -NFS4ERR_DEADSESSION:
	case -NFS4ERR_BADSESSION:
		nfs4_schedule_session_recovery(session, res->sr_status);
		goto retry_nowait;
	default:
		/* Just update the slot sequence no. */
		slot->seq_done = 1;
	}
out:
	/* The session may be reset by one of the error handlers. */
	dprintk("%s: Error %d free the slot \n", __func__, res->sr_status);
out_noaction:
	return ret;
retry_nowait:
	if (rpc_restart_call_prepare(task)) {
		nfs41_sequence_free_slot(res);
		task->tk_status = 0;
		ret = 0;
	}
	goto out;
out_retry:
	if (!rpc_restart_call(task))
		goto out;
	rpc_delay(task, NFS4_POLL_RETRY_MAX);
	return 0;
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 327 86.51% 21 80.77%
andy adamson andy adamson 24 6.35% 1 3.85%
olga kornievskaia olga kornievskaia 22 5.82% 1 3.85%
alexandros batsakis alexandros batsakis 4 1.06% 2 7.69%
benny halevy benny halevy 1 0.26% 1 3.85%
Total 378 100.00% 26 100.00%



int nfs41_sequence_done(struct rpc_task *task, struct nfs4_sequence_res *res)
{
	if (!nfs41_sequence_process(task, res))
		return 0;
	if (res->sr_slot != NULL)
		nfs41_sequence_free_slot(res);
	return 1;

}
Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 44 100.00% 1 100.00%
Total 44 100.00% 1 100.00%


EXPORT_SYMBOL_GPL(nfs41_sequence_done);



static int nfs4_sequence_process(struct rpc_task *task, struct nfs4_sequence_res *res)
{
	if (res->sr_slot == NULL)
		return 1;
	if (res->sr_slot->table->session != NULL)
		return nfs41_sequence_process(task, res);
	return nfs40_sequence_done(task, res);
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 55 100.00% 1 100.00%
Total 55 100.00% 1 100.00%



static void nfs4_sequence_free_slot(struct nfs4_sequence_res *res)
{
	if (res->sr_slot != NULL) {
		if (res->sr_slot->table->session != NULL)
			nfs41_sequence_free_slot(res);
		else
			nfs40_sequence_free_slot(res);
	}
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 44 100.00% 1 100.00%
Total 44 100.00% 1 100.00%



int nfs4_sequence_done(struct rpc_task *task, struct nfs4_sequence_res *res)
{
	if (res->sr_slot == NULL)
		return 1;
	if (!res->sr_slot->table->session)
		return nfs40_sequence_done(task, res);
	return nfs41_sequence_done(task, res);
}
Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 41 77.36% 5 83.33%
chuck lever chuck lever 12 22.64% 1 16.67%
Total 53 100.00% 6 100.00%


EXPORT_SYMBOL_GPL(nfs4_sequence_done);



int nfs41_setup_sequence(struct nfs4_session *session,
				struct nfs4_sequence_args *args,
				struct nfs4_sequence_res *res,
				struct rpc_task *task)
{
	struct nfs4_slot *slot;
	struct nfs4_slot_table *tbl;

	dprintk("--> %s\n", __func__);
	/* slot already allocated? */
	if (res->sr_slot != NULL)
		goto out_success;

	tbl = &session->fc_slot_table;

	task->tk_timeout = 0;

	spin_lock(&tbl->slot_tbl_lock);
	if (test_bit(NFS4_SLOT_TBL_DRAINING, &tbl->slot_tbl_state) &&
	    !args->sa_privileged) {
		/* The state manager will wait until the slot table is empty */
		dprintk("%s session is draining\n", __func__);
		goto out_sleep;
	}

	slot = nfs4_alloc_slot(tbl);
	if (IS_ERR(slot)) {
		/* If out of memory, try again in 1/4 second */
		if (slot == ERR_PTR(-ENOMEM))
			task->tk_timeout = HZ >> 2;
		dprintk("<-- %s: no free slots\n", __func__);
		goto out_sleep;
	}
	spin_unlock(&tbl->slot_tbl_lock);

	slot->privileged = args->sa_privileged ? 1 : 0;
	args->sa_slot = slot;

	dprintk("<-- %s slotid=%u seqid=%u\n", __func__,
			slot->slot_nr, slot->seq_nr);

	res->sr_slot = slot;
	res->sr_timestamp = jiffies;
	res->sr_status_flags = 0;
	/*
         * sr_status is only set in decode_sequence, and so will remain
         * set to 1 if an rpc level failure occurs.
         */
	res->sr_status = 1;
	trace_nfs4_setup_sequence(session, args);
out_success:
	rpc_call_start(task);
	return 0;
out_sleep:
	/* Privileged tasks are queued with top priority */
	if (args->sa_privileged)
		rpc_sleep_on_priority(&tbl->slot_tbl_waitq, task,
				NULL, RPC_PRIORITY_PRIVILEGED);
	else
		rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL);
	spin_unlock(&tbl->slot_tbl_lock);
	return -EAGAIN;
}
Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 222 79.00% 13 65.00%
andy adamson andy adamson 41 14.59% 3 15.00%
alexandros batsakis alexandros batsakis 14 4.98% 1 5.00%
benny halevy benny halevy 3 1.07% 2 10.00%
chuck lever chuck lever 1 0.36% 1 5.00%
Total 281 100.00% 20 100.00%


EXPORT_SYMBOL_GPL(nfs41_setup_sequence);



static int nfs4_setup_sequence(const struct nfs_server *server,
			       struct nfs4_sequence_args *args,
			       struct nfs4_sequence_res *res,
			       struct rpc_task *task)
{
	struct nfs4_session *session = nfs4_get_session(server);
	int ret = 0;

	if (!session)
		return nfs40_setup_sequence(server->nfs_client->cl_slot_tbl,
					    args, res, task);

	dprintk("--> %s clp %p session %p sr_slot %u\n",
		__func__, session->clp, session, res->sr_slot ?
			res->sr_slot->slot_nr : NFS4_NO_SLOT);

	ret = nfs41_setup_sequence(session, args, res, task);

	dprintk("<-- %s status=%d\n", __func__, ret);
	return ret;
}

Contributors
Person Tokens Prop Commits CommitProp
andy adamson andy adamson 64 56.64% 1 11.11%
trond myklebust trond myklebust 25 22.12% 3 33.33%
chuck lever chuck lever 13 11.50% 3 33.33%
benny halevy benny halevy 7 6.19% 1 11.11%
peng tao peng tao 4 3.54% 1 11.11%
Total 113 100.00% 9 100.00%



static void nfs41_call_sync_prepare(struct rpc_task *task, void *calldata)
{
	struct nfs4_call_sync_data *data = calldata;
	struct nfs4_session *session = nfs4_get_session(data->seq_server);

	dprintk("--> %s data->seq_server %p\n", __func__, data->seq_server);

	nfs41_setup_sequence(session, data->seq_args, data->seq_res, task);
}

Contributors
Person Tokens Prop Commits CommitProp
andy adamson andy adamson 43 71.67% 1 25.00%
trond myklebust trond myklebust 16 26.67% 2 50.00%
chuck lever chuck lever 1 1.67% 1 25.00%
Total 60 100.00% 4 100.00%



static void nfs41_call_sync_done(struct rpc_task *task, void *calldata)
{
	struct nfs4_call_sync_data *data = calldata;

	nfs41_sequence_done(task, data->seq_res);
}

Contributors
Person Tokens Prop Commits CommitProp
andy adamson andy adamson 28 90.32% 1 33.33%
trond myklebust trond myklebust 2 6.45% 1 33.33%
chuck lever chuck lever 1 3.23% 1 33.33%
Total 31 100.00% 3 100.00%


static const struct rpc_call_ops nfs41_call_sync_ops = {
	.rpc_call_prepare = nfs41_call_sync_prepare,
	.rpc_call_done = nfs41_call_sync_done,
};

#else	/* !CONFIG_NFS_V4_1 */



static int nfs4_setup_sequence(const struct nfs_server *server,
			       struct nfs4_sequence_args *args,
			       struct nfs4_sequence_res *res,
			       struct rpc_task *task)
{
	return nfs40_setup_sequence(server->nfs_client->cl_slot_tbl,
				    args, res, task);
}

Contributors
Person Tokens Prop Commits CommitProp
chuck lever chuck lever 39 90.70% 2 66.67%
peng tao peng tao 4 9.30% 1 33.33%
Total 43 100.00% 3 100.00%



static int nfs4_sequence_process(struct rpc_task *task, struct nfs4_sequence_res *res)
{
	return nfs40_sequence_done(task, res);
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 24 100.00% 1 100.00%
Total 24 100.00% 1 100.00%



static void nfs4_sequence_free_slot(struct nfs4_sequence_res *res)
{
	if (res->sr_slot != NULL)
		nfs40_sequence_free_slot(res);
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 24 100.00% 1 100.00%
Total 24 100.00% 1 100.00%



int nfs4_sequence_done(struct rpc_task *task,
		       struct nfs4_sequence_res *res)
{
	return nfs40_sequence_done(task, res);
}
Contributors
Person Tokens Prop Commits CommitProp
chuck lever chuck lever 23 100.00% 2 100.00%
Total 23 100.00% 2 100.00%


EXPORT_SYMBOL_GPL(nfs4_sequence_done);

#endif	/* !CONFIG_NFS_V4_1 */



static void nfs40_call_sync_prepare(struct rpc_task *task, void *calldata)
{
	struct nfs4_call_sync_data *data = calldata;
	nfs4_setup_sequence(data->seq_server,
				data->seq_args, data->seq_res, task);
}

Contributors
Person Tokens Prop Commits CommitProp
chuck lever chuck lever 39 100.00% 1 100.00%
Total 39 100.00% 1 100.00%



static void nfs40_call_sync_done(struct rpc_task *task, void *calldata)
{
	struct nfs4_call_sync_data *data = calldata;
	nfs4_sequence_done(task, data->seq_res);
}

Contributors
Person Tokens Prop Commits CommitProp
chuck lever chuck lever 31 100.00% 1 100.00%
Total 31 100.00% 1 100.00%


static const struct rpc_call_ops nfs40_call_sync_ops = {
	.rpc_call_prepare = nfs40_call_sync_prepare,
	.rpc_call_done = nfs40_call_sync_done,
};



static int nfs4_call_sync_sequence(struct rpc_clnt *clnt,
				   struct nfs_server *server,
				   struct rpc_message *msg,
				   struct nfs4_sequence_args *args,
				   struct nfs4_sequence_res *res)
{
	int ret;
	struct rpc_task *task;
	struct nfs_client *clp = server->nfs_client;
	struct nfs4_call_sync_data data = {
		.seq_server = server,
		.seq_args = args,
		.seq_res = res,
        };
	struct rpc_task_setup task_setup = {
		.rpc_client = clnt,
		.rpc_message = msg,
		.callback_ops = clp->cl_mvops->call_sync_ops,
		.callback_data = &data
	};

	task = rpc_run_task(&task_setup);
	if (IS_ERR(task))
		ret = PTR_ERR(task);
	else {
		ret = task->tk_status;
		rpc_put_task(task);
	}
	return ret;
}

Contributors
Person Tokens Prop Commits CommitProp
andy adamson andy adamson 114 82.01% 1 20.00%
chuck lever chuck lever 15 10.79% 2 40.00%
bryan schumaker bryan schumaker 6 4.32% 1 20.00%
trond myklebust trond myklebust 4 2.88% 1 20.00%
Total 139 100.00% 5 100.00%



int nfs4_call_sync(struct rpc_clnt *clnt,
		   struct nfs_server *server,
		   struct rpc_message *msg,
		   struct nfs4_sequence_args *args,
		   struct nfs4_sequence_res *res,
		   int cache_reply)
{
	nfs4_init_sequence(args, res, cache_reply);
	return nfs4_call_sync_sequence(clnt, server, msg, args, res);
}

Contributors
Person Tokens Prop Commits CommitProp
bryan schumaker bryan schumaker 34 60.71% 2 33.33%
andy adamson andy adamson 12 21.43% 1 16.67%
trond myklebust trond myklebust 8 14.29% 1 16.67%
chuck lever chuck lever 2 3.57% 2 33.33%
Total 56 100.00% 6 100.00%



static void update_changeattr(struct inode *dir, struct nfs4_change_info *cinfo,
		unsigned long timestamp)
{
	struct nfs_inode *nfsi = NFS_I(dir);

	spin_lock(&dir->i_lock);
	nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_DATA;
	if (cinfo->atomic && cinfo->before == dir->i_version) {
		nfsi->cache_validity &= ~NFS_INO_REVAL_PAGECACHE;
		nfsi->attrtimeo_timestamp = jiffies;
	} else {
		nfs_force_lookup_revalidate(dir);
		if (cinfo->before != dir->i_version)
			nfsi->cache_validity |= NFS_INO_INVALID_ACCESS |
				NFS_INO_INVALID_ACL;
	}
	dir->i_version = cinfo->after;
	nfsi->read_cache_jiffies = timestamp;
	nfsi->attr_gencount = nfs_inc_attr_generation_counter();
	nfs_fscache_invalidate(dir);
	spin_unlock(&dir->i_lock);
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 130 96.30% 5 83.33%
david howells david howells 5 3.70% 1 16.67%
Total 135 100.00% 6 100.00%


struct nfs4_opendata {
	
struct kref kref;
	
struct nfs_openargs o_arg;
	
struct nfs_openres o_res;
	
struct nfs_open_confirmargs c_arg;
	
struct nfs_open_confirmres c_res;
	
struct nfs4_string owner_name;
	
struct nfs4_string group_name;
	
struct nfs4_label *a_label;
	
struct nfs_fattr f_attr;
	
struct nfs4_label *f_label;
	
struct dentry *dir;
	
struct dentry *dentry;
	
struct nfs4_state_owner *owner;
	
struct nfs4_state *state;
	
struct iattr attrs;
	
unsigned long timestamp;
	
unsigned int rpc_done : 1;
	
unsigned int file_created : 1;
	
unsigned int is_recover : 1;
	
int rpc_status;
	
int cancelled;
};



static bool nfs4_clear_cap_atomic_open_v1(struct nfs_server *server,
		int err, struct nfs4_exception *exception)
{
	if (err != -EINVAL)
		return false;
	if (!(server->caps & NFS_CAP_ATOMIC_OPEN_V1))
		return false;
	server->caps &= ~NFS_CAP_ATOMIC_OPEN_V1;
	exception->retry = 1;
	return true;
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 59 100.00% 1 100.00%
Total 59 100.00% 1 100.00%


static u32

nfs4_map_atomic_open_share(struct nfs_server *server,
		fmode_t fmode, int openflags)
{
	u32 res = 0;

	switch (fmode & (FMODE_READ | FMODE_WRITE)) {
	case FMODE_READ:
		res = NFS4_SHARE_ACCESS_READ;
		break;
	case FMODE_WRITE:
		res = NFS4_SHARE_ACCESS_WRITE;
		break;
	case FMODE_READ|FMODE_WRITE:
		res = NFS4_SHARE_ACCESS_BOTH;
	}
	if (!(server->caps & NFS_CAP_ATOMIC_OPEN_V1))
		goto out;
	/* Want no delegation if we're using O_DIRECT */
	if (openflags & O_DIRECT)
		res |= NFS4_SHARE_WANT_NO_DELEG;
out:
	return res;
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 89 100.00% 2 100.00%
Total 89 100.00% 2 100.00%


static enum open_claim_type4

nfs4_map_atomic_open_claim(struct nfs_server *server,
		enum open_claim_type4 claim)
{
	if (server->caps & NFS_CAP_ATOMIC_OPEN_V1)
		return claim;
	switch (claim) {
	default:
		return claim;
	case NFS4_OPEN_CLAIM_FH:
		return NFS4_OPEN_CLAIM_NULL;
	case NFS4_OPEN_CLAIM_DELEG_CUR_FH:
		return NFS4_OPEN_CLAIM_DELEGATE_CUR;
	case NFS4_OPEN_CLAIM_DELEG_PREV_FH:
		return NFS4_OPEN_CLAIM_DELEGATE_PREV;
	}
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 55 100.00% 2 100.00%
Total 55 100.00% 2 100.00%



static void nfs4_init_opendata_res(struct nfs4_opendata *p)
{
	p->o_res.f_attr = &p->f_attr;
	p->o_res.f_label = p->f_label;
	p->o_res.seqid = p->o_arg.seqid;
	p->c_res.seqid = p->c_arg.seqid;
	p->o_res.server = p->o_arg.server;
	p->o_res.access_request = p->o_arg.access;
	nfs_fattr_init(&p->f_attr);
	nfs_fattr_init_names(&p->f_attr, &p->owner_name, &p->group_name);
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 84 79.25% 3 60.00%
andy adamson andy adamson 12 11.32% 1 20.00%
david quigley david quigley 10 9.43% 1 20.00%
Total 106 100.00% 5 100.00%



static struct nfs4_opendata *nfs4_opendata_alloc(struct dentry *dentry,
		struct nfs4_state_owner *sp, fmode_t fmode, int flags,
		const struct iattr *attrs,
		struct nfs4_label *label,
		enum open_claim_type4 claim,
		gfp_t gfp_mask)
{
	struct dentry *parent = dget_parent(dentry);
	struct inode *dir = d_inode(parent);
	struct nfs_server *server = NFS_SERVER(dir);
	struct nfs_seqid *(*alloc_seqid)(struct nfs_seqid_counter *, gfp_t);
	struct nfs4_opendata *p;

	p = kzalloc(sizeof(*p), gfp_mask);
	if (p == NULL)
		goto err;

	p->f_label = nfs4_label_alloc(server, gfp_mask);
	if (IS_ERR(p->f_label))
		goto err_free_p;

	p->a_label = nfs4_label_alloc(server, gfp_mask);
	if (IS_ERR(p->a_label))
		goto err_free_f;

	alloc_seqid = server->nfs_client->cl_mvops->alloc_seqid;
	p->o_arg.seqid = alloc_seqid(&sp->so_seqid, gfp_mask);
	if (IS_ERR(p->o_arg.seqid))
		goto err_free_label;
	nfs_sb_active(dentry->d_sb);
	p->dentry = dget(dentry);
	p->dir = parent;
	p->owner = sp;
	atomic_inc(&sp->so_count);
	p->o_arg.open_flags = flags;
	p->o_arg.fmode = fmode & (FMODE_READ|FMODE_WRITE);
	p->o_arg.umask = current_umask();
	p->o_arg.claim = nfs4_map_atomic_open_claim(server, claim);
	p->o_arg.share_access = nfs4_map_atomic_open_share(server,
			fmode, flags);
	/* don't put an ACCESS op in OPEN compound if O_EXCL, because ACCESS
         * will return permission denied for all bits until close */
	if (!(flags & O_EXCL)) {
		/* ask server to check for all possible rights as results
                 * are cached */
		switch (p->o_arg.claim) {
		default:
			break;
		case NFS4_OPEN_CLAIM_NULL:
		case NFS4_OPEN_CLAIM_FH:
			p->o_arg.access = NFS4_ACCESS_READ |
				NFS4_ACCESS_MODIFY |
				NFS4_ACCESS_EXTEND |
				NFS4_ACCESS_EXECUTE;
		}
	}
	p->o_arg.clientid = server->nfs_client->cl_clientid;
	p->o_arg.id.create_time = ktime_to_ns(sp->so_seqid.create_time);
	p->o_arg.id.uniquifier = sp->so_seqid.owner_id;
	p->o_arg.name = &dentry->d_name;
	p->o_arg.server = server;
	p->o_arg.bitmask = nfs4_bitmask(server, label);
	p->o_arg.open_bitmap = &nfs4_fattr_bitmap[0];
	p->o_arg.label = nfs4_label_copy(p->a_label, label);
	switch (p->o_arg.claim) {
	case NFS4_OPEN_CLAIM_NULL:
	case NFS4_OPEN_CLAIM_DELEGATE_CUR:
	case NFS4_OPEN_CLAIM_DELEGATE_PREV:
		p->o_arg.fh = NFS_FH(dir);
		break;
	case NFS4_OPEN_CLAIM_PREVIOUS:
	case NFS4_OPEN_CLAIM_FH:
	case NFS4_OPEN_CLAIM_DELEG_CUR_FH:
	case NFS4_OPEN_CLAIM_DELEG_PREV_FH:
		p->o_arg.fh = NFS_FH(d_inode(dentry));
	}
	if (attrs != NULL && attrs->ia_valid != 0) {
		__u32 verf[2];

		p->o_arg.u.attrs = &p->attrs;
		memcpy(&p->attrs, attrs, sizeof(p->attrs));

		verf[0] = jiffies;
		verf[1] = current->pid;
		memcpy(p->o_arg.u.verifier.data, verf,
				sizeof(p->o_arg.u.verifier.data));
	}
	p->c_arg.fh = &p->o_res.fh;
	p->c_arg.stateid = &p->o_res.stateid;
	p->c_arg.seqid = p->o_arg.seqid;
	nfs4_init_opendata_res(p);
	kref_init(&p->kref);
	return p;

err_free_label:
	nfs4_label_free(p->a_label);
err_free_f:
	nfs4_label_free(p->f_label);
err_free_p:
	kfree(p);
err:
	dput(parent);
	return NULL;
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 473 69.35% 20 62.50%
david quigley david quigley 48 7.04% 3 9.38%
kinglong mee kinglong mee 39 5.72% 1 3.12%
chuck lever chuck lever 34 4.99% 1 3.12%
alexandros batsakis alexandros batsakis 32 4.69% 1 3.12%
weston andros adamson weston andros adamson 29 4.25% 2 6.25%
al viro al viro 11 1.61% 1 3.12%
andreas gruenbacher andreas gruenbacher 9 1.32% 1 3.12%
david howells david howells 7 1.03% 2 6.25%
Total 682 100.00% 32 100.00%



static void nfs4_opendata_free(struct kref *kref)
{
	struct nfs4_opendata *p = container_of(kref,
			struct nfs4_opendata, kref);
	struct super_block *sb = p->dentry->d_sb;

	nfs_free_seqid(p->o_arg.seqid);
	nfs4_sequence_free_slot(&p->o_res.seq_res);
	if (p->state != NULL)
		nfs4_put_open_state(p->state);
	nfs4_put_state_owner(p->owner);

	nfs4_label_free(p->a_label);
	nfs4_label_free(p->f_label);

	dput(p->dir);
	dput(p->dentry);
	nfs_sb_deactive(sb);
	nfs_fattr_free_names(&p->f_attr);
	kfree(p->f_attr.mdsthreshold);
	kfree(p);
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 101 75.94% 8 72.73%
al viro al viro 18 13.53% 1 9.09%
david quigley david quigley 10 7.52% 1 9.09%
kinglong mee kinglong mee 4 3.01% 1 9.09%
Total 133 100.00% 11 100.00%



static void nfs4_opendata_put(struct nfs4_opendata *p)
{
	if (p != NULL)
		kref_put(&p->kref, nfs4_opendata_free);
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 27 100.00% 2 100.00%
Total 27 100.00% 2 100.00%



static int nfs4_wait_for_completion_rpc_task(struct rpc_task *task)
{
	int ret;

	ret = rpc_wait_for_completion_task(task);
	return ret;
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 24 100.00% 1 100.00%
Total 24 100.00% 1 100.00%



static bool nfs4_mode_match_open_stateid(struct nfs4_state *state,
		fmode_t fmode)
{
	switch(fmode & (FMODE_READ|FMODE_WRITE)) {
	case FMODE_READ|FMODE_WRITE:
		return state->n_rdwr != 0;
	case FMODE_WRITE:
		return state->n_wronly != 0;
	case FMODE_READ:
		return state->n_rdonly != 0;
	}
	WARN_ON_ONCE(1);
	return false;
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 66 100.00% 1 100.00%
Total 66 100.00% 1 100.00%



static int can_open_cached(struct nfs4_state *state, fmode_t mode, int open_mode)
{
	int ret = 0;

	if (open_mode & (O_EXCL|O_TRUNC))
		goto out;
	switch (mode & (FMODE_READ|FMODE_WRITE)) {
		case FMODE_READ:
			ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0
				&& state->n_rdonly != 0;
			break;
		case FMODE_WRITE:
			ret |= test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0
				&& state->n_wronly != 0;
			break;
		case FMODE_READ|FMODE_WRITE:
			ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0
				&& state->n_rdwr != 0;
	}
out:
	return ret;
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 125 100.00% 6 100.00%
Total 125 100.00% 6 100.00%



static int can_open_delegated(struct nfs_delegation *delegation, fmode_t fmode,
		enum open_claim_type4 claim)
{
	if (delegation == NULL)
		return 0;
	if ((delegation->type & fmode) != fmode)
		return 0;
	if (test_bit(NFS_DELEGATION_RETURNING, &delegation->flags))
		return 0;
	switch (claim) {
	case NFS4_OPEN_CLAIM_NULL:
	case NFS4_OPEN_CLAIM_FH:
		break;
	case NFS4_OPEN_CLAIM_PREVIOUS:
		if (!test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags))
			break;
	default:
		return 0;
	}
	nfs_mark_delegation_referenced(delegation);
	return 1;
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 99 100.00% 9 100.00%
Total 99 100.00% 9 100.00%



static void update_open_stateflags(struct nfs4_state *state, fmode_t fmode)
{
	switch (fmode) {
		case FMODE_WRITE:
			state->n_wronly++;
			break;
		case FMODE_READ:
			state->n_rdonly++;
			break;
		case FMODE_READ|FMODE_WRITE:
			state->n_rdwr++;
	}
	nfs4_state_set_mode_locked(state, state->state | fmode);
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 59 100.00% 7 100.00%
Total 59 100.00% 7 100.00%

#ifdef CONFIG_NFS_V4_1


static bool nfs_open_stateid_recover_openmode(struct nfs4_state *state)
{
	if (state->n_rdonly && !test_bit(NFS_O_RDONLY_STATE, &state->flags))
		return true;
	if (state->n_wronly && !test_bit(NFS_O_WRONLY_STATE, &state->flags))
		return true;
	if (state->n_rdwr && !test_bit(NFS_O_RDWR_STATE, &state->flags))
		return true;
	return false;
}
Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 74 100.00% 1 100.00%
Total 74 100.00% 1 100.00%

#endif /* CONFIG_NFS_V4_1 */



static void nfs_test_and_clear_all_open_stateid(struct nfs4_state *state)
{
	struct nfs_client *clp = state->owner->so_server->nfs_client;
	bool need_recover = false;

	if (test_and_clear_bit(NFS_O_RDONLY_STATE, &state->flags) && state->n_rdonly)
		need_recover = true;
	if (test_and_clear_bit(NFS_O_WRONLY_STATE, &state->flags) && state->n_wronly)
		need_recover = true;
	if (test_and_clear_bit(NFS_O_RDWR_STATE, &state->flags) && state->n_rdwr)
		need_recover = true;
	if (need_recover)
		nfs4_state_mark_reclaim_nograce(clp, state);
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 100 100.00% 2 100.00%
Total 100 100.00% 2 100.00%



static bool nfs_need_update_open_stateid(struct nfs4_state *state,
		const nfs4_stateid *stateid, nfs4_stateid *freeme)
{
	if (test_and_set_bit(NFS_OPEN_STATE, &state->flags) == 0)
		return true;
	if (!nfs4_stateid_match_other(stateid, &state->open_stateid)) {
		nfs4_stateid_copy(freeme, &state->open_stateid);
		nfs_test_and_clear_all_open_stateid(state);
		return true;
	}
	if (nfs4_stateid_is_newer(stateid, &state->open_stateid))
		return true;
	return false;
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 88 100.00% 8 100.00%
Total 88 100.00% 8 100.00%



static void nfs_resync_open_stateid_locked(struct nfs4_state *state)
{
	if (!(state->n_wronly || state->n_rdonly || state->n_rdwr))
		return;
	if (state->n_wronly)
		set_bit(NFS_O_WRONLY_STATE, &state->flags);
	if (state->n_rdonly)
		set_bit(NFS_O_RDONLY_STATE, &state->flags);
	if (state->n_rdwr)
		set_bit(NFS_O_RDWR_STATE, &state->flags);
	set_bit(NFS_OPEN_STATE, &state->flags);
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 87 100.00% 2 100.00%
Total 87 100.00% 2 100.00%



static void nfs_clear_open_stateid_locked(struct nfs4_state *state,
		nfs4_stateid *stateid, fmode_t fmode)
{
	clear_bit(NFS_O_RDWR_STATE, &state->flags);
	switch (fmode & (FMODE_READ|FMODE_WRITE)) {
	case FMODE_WRITE:
		clear_bit(NFS_O_RDONLY_STATE, &state->flags);
		break;
	case FMODE_READ:
		clear_bit(NFS_O_WRONLY_STATE, &state->flags);
		break;
	case 0:
		clear_bit(NFS_O_RDONLY_STATE, &state->flags);
		clear_bit(NFS_O_WRONLY_STATE, &state->flags);
		clear_bit(NFS_OPEN_STATE, &state->flags);
	}
	if (stateid == NULL)
		return;
	/* Handle OPEN+OPEN_DOWNGRADE races */
	if (nfs4_stateid_match_other(stateid, &state->open_stateid) &&
	    !nfs4_stateid_is_newer(stateid, &state->open_stateid)) {
		nfs_resync_open_stateid_locked(state);
		return;
	}
	if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0)
		nfs4_stateid_copy(&state->stateid, stateid);
	nfs4_stateid_copy(&state->open_stateid, stateid);
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 174 100.00% 9 100.00%
Total 174 100.00% 9 100.00%



static void nfs_clear_open_stateid(struct nfs4_state *state,
	nfs4_stateid *arg_stateid,
	nfs4_stateid *stateid, fmode_t fmode)
{
	write_seqlock(&state->seqlock);
	/* Ignore, if the CLOSE argment doesn't match the current stateid */
	if (nfs4_state_match_open_stateid_other(state, arg_stateid))
		nfs_clear_open_stateid_locked(state, stateid, fmode);
	write_sequnlock(&state->seqlock);
	if (test_bit(NFS_STATE_RECLAIM_NOGRACE, &state->flags))
		nfs4_schedule_state_manager(state->owner->so_server->nfs_client);
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 80 100.00% 9 100.00%
Total 80 100.00% 9 100.00%



static void nfs_set_open_stateid_locked(struct nfs4_state *state,
		const nfs4_stateid *stateid, fmode_t fmode,
		nfs4_stateid *freeme)
{
	switch (fmode) {
		case FMODE_READ:
			set_bit(NFS_O_RDONLY_STATE, &state->flags);
			break;
		case FMODE_WRITE:
			set_bit(NFS_O_WRONLY_STATE, &state->flags);
			break;
		case FMODE_READ|FMODE_WRITE:
			set_bit(NFS_O_RDWR_STATE, &state->flags);
	}
	if (!nfs_need_update_open_stateid(state, stateid, freeme))
		return;
	if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0)
		nfs4_stateid_copy(&state->stateid, stateid);
	nfs4_stateid_copy(&state->open_stateid, stateid);
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 119 100.00% 3 100.00%
Total 119 100.00% 3 100.00%



static void __update_open_stateid(struct nfs4_state *state,
		const nfs4_stateid *open_stateid,
		const nfs4_stateid *deleg_stateid,
		fmode_t fmode,
		nfs4_stateid *freeme)
{
	/*
         * Protect the call to nfs4_state_set_mode_locked and
         * serialise the stateid update
         */
	spin_lock(&state->owner->so_lock);
	write_seqlock(&state->seqlock);
	if (deleg_stateid != NULL) {
		nfs4_stateid_copy(&state->stateid, deleg_stateid);
		set_bit(NFS_DELEGATED_STATE, &state->flags);
	}
	if (open_stateid != NULL)
		nfs_set_open_stateid_locked(state, open_stateid, fmode, freeme);
	write_sequnlock(&state->seqlock);
	update_open_stateflags(state, fmode);
	spin_unlock(&state->owner->so_lock);
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 107 91.45% 7 87.50%
andrew elble andrew elble 10 8.55% 1 12.50%
Total 117 100.00% 8 100.00%



static int update_open_stateid(struct nfs4_state *state,
		const nfs4_stateid *open_stateid,
		const nfs4_stateid *delegation,
		fmode_t fmode)
{
	struct nfs_server *server = NFS_SERVER(state->inode);
	struct nfs_client *clp = server->nfs_client;
	struct nfs_inode *nfsi = NFS_I(state->inode);
	struct nfs_delegation *deleg_cur;
	nfs4_stateid freeme = { };
	int ret = 0;

	fmode &= (FMODE_READ|FMODE_WRITE);

	rcu_read_lock();
	deleg_cur = rcu_dereference(nfsi->delegation);
	if (deleg_cur == NULL)
		goto no_delegation;

	spin_lock(&deleg_cur->lock);
	if (rcu_dereference(nfsi->delegation) != deleg_cur ||
	   test_bit(NFS_DELEGATION_RETURNING, &deleg_cur->flags) ||
	    (deleg_cur->type & fmode) != fmode)
		goto no_delegation_unlock;

	if (delegation == NULL)
		delegation = &deleg_cur->stateid;
	else if (!nfs4_stateid_match(&deleg_cur->stateid, delegation))
		goto no_delegation_unlock;

	nfs_mark_delegation_referenced(deleg_cur);
	__update_open_stateid(state, open_stateid, &deleg_cur->stateid,
			fmode, &freeme);
	ret = 1;
no_delegation_unlock:
	spin_unlock(&deleg_cur->lock);
no_delegation:
	rcu_read_unlock();

	if (!ret && open_stateid != NULL) {
		__update_open_stateid(state, open_stateid, NULL, fmode, &freeme);
		ret = 1;
	}
	if (test_bit(NFS_STATE_RECLAIM_NOGRACE, &state->flags))
		nfs4_schedule_state_manager(clp);
	if (freeme.type != 0)
		nfs4_test_and_free_stateid(server, &freeme,
				state->owner->so_cred);

	return ret;
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 284 99.65% 16 94.12%
arnd bergmann arnd bergmann 1 0.35% 1 5.88%
Total 285 100.00% 17 100.00%



static bool nfs4_update_lock_stateid(struct nfs4_lock_state *lsp,
		const nfs4_stateid *stateid)
{
	struct nfs4_state *state = lsp->ls_state;
	bool ret = false;

	spin_lock(&state->state_lock);
	if (!nfs4_stateid_match_other(stateid, &lsp->ls_stateid))
		goto out_noupdate;
	if (!nfs4_stateid_is_newer(stateid, &lsp->ls_stateid))
		goto out_noupdate;
	nfs4_stateid_copy(&lsp->ls_stateid, stateid);
	ret = true;
out_noupdate:
	spin_unlock(&state->state_lock);
	return ret;
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 97 100.00% 1 100.00%
Total 97 100.00% 1 100.00%



static void nfs4_return_incompatible_delegation(struct inode *inode, fmode_t fmode)
{
	struct nfs_delegation *delegation;

	rcu_read_lock();
	delegation = rcu_dereference(NFS_I(inode)->delegation);
	if (delegation == NULL || (delegation->type & fmode) == fmode) {
		rcu_read_unlock();
		return;
	}
	rcu_read_unlock();
	nfs4_inode_return_delegation(inode);
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 63 98.44% 3 75.00%
bryan schumaker bryan schumaker 1 1.56% 1 25.00%
Total 64 100.00% 4 100.00%



static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
{
	struct nfs4_state *state = opendata->state;
	struct nfs_inode *nfsi = NFS_I(state->inode);
	struct nfs_delegation *delegation;
	int open_mode = opendata->o_arg.open_flags;
	fmode_t fmode = opendata->o_arg.fmode;
	enum open_claim_type4 claim = opendata->o_arg.claim;
	nfs4_stateid stateid;
	int ret = -EAGAIN;

	for (;;) {
		spin_lock(&state->owner->so_lock);
		if (can_open_cached(state, fmode, open_mode)) {
			update_open_stateflags(state, fmode);
			spin_unlock(&state->owner->so_lock);
			goto out_return_state;
		}
		spin_unlock(&state->owner->so_lock);
		rcu_read_lock();
		delegation = rcu_dereference(nfsi->delegation);
		if (!can_open_delegated(delegation, fmode, claim)) {
			rcu_read_unlock();
			break;
		}
		/* Save the delegation */
		nfs4_stateid_copy(&stateid, &delegation->stateid);
		rcu_read_unlock();
		nfs_release_seqid(opendata->o_arg.seqid);
		if (!opendata->is_recover) {
			ret = nfs_may_open(state->inode, state->owner->so_cred, open_mode);
			if (ret != 0)
				goto out;
		}
		ret = -EAGAIN;

		/* Try to update the stateid using the delegation */
		if (update_open_stateid(state, NULL, &stateid, fmode))
			goto out_return_state;
	}
out:
	return ERR_PTR(ret);
out_return_state:
	atomic_inc(&state->count);
	return state;
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 269 100.00% 12 100.00%
Total 269 100.00% 12 100.00%


static void

nfs4_opendata_check_deleg(struct nfs4_opendata *data, struct nfs4_state *state)
{
	struct nfs_client *clp = NFS_SERVER(state->inode)->nfs_client;
	struct nfs_delegation *delegation;
	int delegation_flags = 0;

	rcu_read_lock();
	delegation = rcu_dereference(NFS_I(state->inode)->delegation);
	if (delegation)
		delegation_flags = delegation->flags;
	rcu_read_unlock();
	switch (data->o_arg.claim) {
	default:
		break;
	case NFS4_OPEN_CLAIM_DELEGATE_CUR:
	case NFS4_OPEN_CLAIM_DELEG_CUR_FH:
		pr_err_ratelimited("NFS: Broken NFSv4 server %s is "
				   "returning a delegation for "
				   "OPEN(CLAIM_DELEGATE_CUR)\n",
				   clp->cl_hostname);
		return;
	}
	if ((delegation_flags & 1UL<<NFS_DELEGATION_NEED_RECLAIM) == 0)
		nfs_inode_set_delegation(state->inode,
					 data->owner->so_cred,
					 &data->o_res);
	else
		nfs_inode_reclaim_delegation(state->inode,
					     data->owner->so_cred,
					     &data->o_res);
}

Contributors
Person Tokens Prop Commits CommitProp
andy adamson andy adamson 135 90.60% 1 33.33%
trond myklebust trond myklebust 14 9.40% 2 66.67%
Total 149 100.00% 3 100.00%

/*
 * Check the inode attributes against the CLAIM_PREVIOUS returned attributes
 * and update the nfs4_state.
 */

static struct nfs4_state *

_nfs4_opendata_reclaim_to_nfs4_state(struct nfs4_opendata *data)
{
	struct inode *inode = data->state->inode;
	struct nfs4_state *state = data->state;
	int ret;

	if (!data->rpc_done) {
		if (data->rpc_status) {
			ret = data->rpc_status;
			goto err;
		}
		/* cached opens have already been processed */
		goto update;
	}

	ret = nfs_refresh_inode(inode, &data->f_attr);
	if (ret)
		goto err;

	if (data->o_res.delegation_type != 0)
		nfs4_opendata_check_deleg(data, state);
update:
	update_open_stateid(state, &data->o_res.stateid, NULL,
			    data->o_arg.fmode);
	atomic_inc(&state->count);

	return state;
err:
	return ERR_PTR(ret);

}

Contributors
Person Tokens Prop Commits CommitProp
andy adamson andy adamson 103 72.03% 1 16.67%
trond myklebust trond myklebust 26 18.18% 3 50.00%
weston andros adamson weston andros adamson 14 9.79% 2 33.33%
Total 143 100.00% 6 100.00%


static struct nfs4_state *

_nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data)
{
	struct inode *inode;
	struct nfs4_state *state = NULL;
	int ret;

	if (!data->rpc_done) {
		state = nfs4_try_open_cached(data);
		trace_nfs4_cached_open(data->state);
		goto out;
	}

	ret = -EAGAIN;
	if (!(data->f_attr.valid & NFS_ATTR_FATTR))
		goto err;
	inode = nfs_fhget(data->dir->d_sb, &data->o_res.fh, &data->f_attr, data->f_label);
	ret = PTR_ERR(inode);
	if (IS_ERR(inode))
		goto err;
	ret = -ENOMEM;
	state = nfs4_get_open_state(inode, data->owner);
	if (state == NULL)
		goto err_put_inode;
	if (data->o_res.delegation_type != 0)
		nfs4_opendata_check_deleg(data, state);
	update_open_stateid(state, &data->o_res.stateid, NULL,
			data->o_arg.fmode);
	iput(inode);
out:
	nfs_release_seqid(data->o_arg.seqid);
	return state;
err_put_inode:
	iput(inode);
err:
	return ERR_PTR(ret);
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 183 85.12% 10 76.92%
andy adamson andy adamson 21 9.77% 1 7.69%
olga kornievskaia olga kornievskaia 7 3.26% 1 7.69%
david quigley david quigley 4 1.86% 1 7.69%
Total 215 100.00% 13 100.00%


static struct nfs4_state *

nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data)
{
	struct nfs4_state *ret;

	if (data->o_arg.claim == NFS4_OPEN_CLAIM_PREVIOUS)
		ret =_nfs4_opendata_reclaim_to_nfs4_state(data);
	else
		ret = _nfs4_opendata_to_nfs4_state(data);
	nfs4_sequence_free_slot(&data->o_res.seq_res);
	return ret;
}

Contributors
Person Tokens Prop Commits CommitProp
andy adamson andy adamson 32 57.14% 1 50.00%
trond myklebust trond myklebust 24 42.86% 1 50.00%
Total 56 100.00% 2 100.00%



static struct nfs_open_context *nfs4_state_find_open_context(struct nfs4_state *state)
{
	struct nfs_inode *nfsi = NFS_I(state->inode);
	struct nfs_open_context *ctx;

	spin_lock(&state->inode->i_lock);
	list_for_each_entry(ctx, &nfsi->open_files, list) {
		if (ctx->state != state)
			continue;
		get_nfs_open_context(ctx);
		spin_unlock(&state->inode->i_lock);
		return ctx;
	}
	spin_unlock(&state->inode->i_lock);
	return ERR_PTR(-ENOENT);
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 94 100.00% 7 100.00%
Total 94 100.00% 7 100.00%



static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context *ctx,
		struct nfs4_state *state, enum open_claim_type4 claim)
{
	struct nfs4_opendata *opendata;

	opendata = nfs4_opendata_alloc(ctx->dentry, state->owner, 0, 0,
			NULL, NULL, claim, GFP_NOFS);
	if (opendata == NULL)
		return ERR_PTR(-ENOMEM);
	opendata->state = state;
	atomic_inc(&state->count);
	return opendata;
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 79 96.34% 8 80.00%
david quigley david quigley 2 2.44% 1 10.00%
al viro al viro 1 1.22% 1 10.00%
Total 82 100.00% 10 100.00%



static int nfs4_open_recover_helper(struct nfs4_opendata *opendata,
		fmode_t fmode)
{
	struct nfs4_state *newstate;
	int ret;

	if (!nfs4_mode_match_open_stateid(opendata->state, fmode))
		return 0;
	opendata->o_arg.open_flags = 0;
	opendata->o_arg.fmode = fmode;
	opendata->o_arg.share_access = nfs4_map_atomic_open_share(
			NFS_SB(opendata->dentry->d_sb),
			fmode, 0);
	memset(&opendata->o_res, 0, sizeof(opendata->o_res));
	memset(&opendata->c_res, 0, sizeof(opendata->c_res));
	nfs4_init_opendata_res(opendata);
	ret = _nfs4_recover_proc_open(opendata);
	if (ret != 0)
		return ret; 
	newstate = nfs4_opendata_to_nfs4_state(opendata);
	if (IS_ERR(newstate))
		return PTR_ERR(newstate);
	if (newstate != opendata->state)
		ret = -ESTALE;
	nfs4_close_state(newstate, fmode);
	return ret;
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 163 94.22% 10 83.33%
neil brown neil brown 9 5.20% 1 8.33%
alexandros batsakis alexandros batsakis 1 0.58% 1 8.33%
Total 173 100.00% 12 100.00%



static int nfs4_open_recover(struct nfs4_opendata *opendata, struct nfs4_state *state)
{
	int ret;

	/* Don't trigger recovery in nfs_test_and_clear_all_open_stateid */
	clear_bit(NFS_O_RDWR_STATE, &state->flags);
	clear_bit(NFS_O_WRONLY_STATE, &state->flags);
	clear_bit(NFS_O_RDONLY_STATE, &state->flags);
	/* memory barrier prior to reading state->n_* */
	clear_bit(NFS_DELEGATED_STATE, &state->flags);
	clear_bit(NFS_OPEN_STATE, &state->flags);
	smp_rmb();
	ret = nfs4_open_recover_helper(opendata, FMODE_READ|FMODE_WRITE);
	if (ret != 0)
		return ret;
	ret = nfs4_open_recover_helper(opendata, FMODE_WRITE);
	if (ret != 0)
		return ret;
	ret = nfs4_open_recover_helper(opendata, FMODE_READ);
	if (ret != 0)
		return ret;
	/*
         * We may have performed cached opens for all three recoveries.
         * Check if we need to update the current stateid.
         */
	if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0 &&
	    !nfs4_stateid_match(&state->stateid, &state->open_stateid)) {
		write_seqlock(&state->seqlock);
		if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0)
			nfs4_stateid_copy(&state->stateid, &state->open_stateid);
		write_sequnlock(&state->seqlock);
	}
	return 0;
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 207 100.00% 9 100.00%
Total 207 100.00% 9 100.00%

/*
 * OPEN_RECLAIM:
 *      reclaim state on the server after a reboot.
 */


static int _nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state)
{
	struct nfs_delegation *delegation;
	struct nfs4_opendata *opendata;
	fmode_t delegation_type = 0;
	int status;

	opendata = nfs4_open_recoverdata_alloc(ctx, state,
			NFS4_OPEN_CLAIM_PREVIOUS);
	if (IS_ERR(opendata))
		return PTR_ERR(opendata);
	rcu_read_lock();
	delegation = rcu_dereference(NFS_I(state->inode)->delegation);
	if (delegation != NULL && test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags) != 0)
		delegation_type = delegation->type;
	rcu_read_unlock();
	opendata->o_arg.u.delegation_type = delegation_type;
	status = nfs4_open_recover(opendata, state);
	nfs4_opendata_put(opendata);
	return status;
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 129 100.00% 9 100.00%
Total 129 100.00% 9 100.00%



static int nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state)
{
	struct nfs_server *server = NFS_SERVER(state->inode);
	struct nfs4_exception exception = { };
	int err;
	do {
		err = _nfs4_do_open_reclaim(ctx, state);
		trace_nfs4_open_reclaim(ctx, 0, err);
		if (nfs4_clear_cap_atomic_open_v1(server, err, &exception))
			continue;
		if (err != -NFS4ERR_DELAY)
			break;
		nfs4_handle_exception(server, err, &exception);
	} while (exception.retry);
	return err;
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 99 100.00% 4 100.00%
Total 99 100.00% 4 100.00%



static int nfs4_open_reclaim(struct nfs4_state_owner *sp, struct nfs4_state *state)
{
	struct nfs_open_context *ctx;
	int ret;

	ctx = nfs4_state_find_open_context(state);
	if (IS_ERR(ctx))
		return -EAGAIN;
	ret = nfs4_do_open_reclaim(ctx, state);
	put_nfs_open_context(ctx);
	return ret;
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 59 100.00% 3 100.00%
Total 59 100.00% 3 100.00%



static int nfs4_handle_delegation_recall_error(struct nfs_server *server, struct nfs4_state *state, const nfs4_stateid *stateid, int err)
{
	switch (err) {
		default:
			printk(KERN_ERR "NFS: %s: unhandled error "
					"%d.\n", __func__, err);
		case 0:
		case -ENOENT:
		case -EAGAIN:
		case -ESTALE:
			break;
		case -NFS4ERR_BADSESSION:
		case -NFS4ERR_BADSLOT:
		case -NFS4ERR_BAD_HIGH_SLOT:
		case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION:
		case -NFS4ERR_DEADSESSION:
			set_bit(NFS_DELEGATED_STATE, &state->flags);
			nfs4_schedule_session_recovery(server->nfs_client->cl_session, err);
			return -EAGAIN;
		case -NFS4ERR_STALE_CLIENTID:
		case -NFS4ERR_STALE_STATEID:
			set_bit(NFS_DELEGATED_STATE, &state->flags);
			/* Don't recall a delegation if it was lost */
			nfs4_schedule_lease_recovery(server->nfs_client);
			return -EAGAIN;
		case -NFS4ERR_MOVED:
			nfs4_schedule_migration_recovery(server);
			return -EAGAIN;
		case -NFS4ERR_LEASE_MOVED:
			nfs4_schedule_lease_moved_recovery(server->nfs_client);
			return -EAGAIN;
		case -NFS4ERR_DELEG_REVOKED:
		case -NFS4ERR_ADMIN_REVOKED:
		case -NFS4ERR_EXPIRED:
		case -NFS4ERR_BAD_STATEID:
		case -NFS4ERR_OPENMODE:
			nfs_inode_find_state_and_recover(state->inode,
					stateid);
			nfs4_schedule_stateid_recovery(server, state);
			return -EAGAIN;
		case -NFS4ERR_DELAY:
		case -NFS4ERR_GRACE:
			set_bit(NFS_DELEGATED_STATE, &state->flags);
			ssleep(1);
			return -EAGAIN;
		case -ENOMEM:
		case -NFS4ERR_DENIED:
			/* kill_proc(fl->fl_pid, SIGLOST, 1); */
			return 0;
	}
	return err;
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 189 77.78% 16 84.21%
chuck lever chuck lever 28 11.52% 2 10.53%
ricardo labiaga ricardo labiaga 26 10.70% 1 5.26%
Total 243 100.00% 19 100.00%



int nfs4_open_delegation_recall(struct nfs_open_context *ctx,
		struct nfs4_state *state, const nfs4_stateid *stateid,
		fmode_t type)
{
	struct nfs_server *server = NFS_SERVER(state->inode);
	struct nfs4_opendata *opendata;
	int err = 0;

	opendata = nfs4_open_recoverdata_alloc(ctx, state,
			NFS4_OPEN_CLAIM_DELEG_CUR_FH);
	if (IS_ERR(opendata))
		return PTR_ERR(opendata);
	nfs4_stateid_copy(&opendata->o_arg.u.delegation, stateid);
	write_seqlock(&state->seqlock);
	nfs4_stateid_copy(&state->stateid, &state->open_stateid);
	write_sequnlock(&state->seqlock);
	clear_bit(NFS_DELEGATED_STATE, &state->flags);
	switch (type & (FMODE_READ|FMODE_WRITE)) {
	case FMODE_READ|FMODE_WRITE:
	case FMODE_WRITE:
		err = nfs4_open_recover_helper(opendata, FMODE_READ|FMODE_WRITE);
		if (err)
			break;
		err = nfs4_open_recover_helper(opendata, FMODE_WRITE);
		if (err)
			break;
	case FMODE_READ:
		err = nfs4_open_recover_helper(opendata, FMODE_READ);
	}
	nfs4_opendata_put(opendata);
	return nfs4_handle_delegation_recall_error(server, state, stateid, err);
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 172 85.57% 3 75.00%
jeff layton jeff layton 29 14.43% 1 25.00%
Total 201 100.00% 4 100.00%



static void nfs4_open_confirm_prepare(struct rpc_task *task, void *calldata)
{
	struct nfs4_opendata *data = calldata;

	nfs40_setup_sequence(data->o_arg.server->nfs_client->cl_slot_tbl,
			     &data->c_arg.seq_args, &data->c_res.seq_res, task);
}

Contributors
Person Tokens Prop Commits CommitProp
chuck lever chuck lever 45 88.24% 1 33.33%
peng tao peng tao 4 7.84% 1 33.33%
trond myklebust trond myklebust 2 3.92% 1 33.33%
Total 51 100.00% 3 100.00%



static void nfs4_open_confirm_done(struct rpc_task *task, void *calldata)
{
	struct nfs4_opendata *data = calldata;

	nfs40_sequence_done(task, &data->c_res.seq_res);

	data->rpc_status = task->tk_status;
	if (data->rpc_status == 0) {
		nfs4_stateid_copy(&data->o_res.stateid, &data->c_res.stateid);
		nfs_confirm_seqid(&data->owner->so_seqid, 0);
		renew_lease(data->o_res.server, data->timestamp);
		data->rpc_done = 1;
	}
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 89 89.00% 8 88.89%
chuck lever chuck lever 11 11.00% 1 11.11%
Total 100 100.00% 9 100.00%



static void nfs4_open_confirm_release(void *calldata)
{
	struct nfs4_opendata *data = calldata;
	struct nfs4_state *state = NULL;

	/* If this request hasn't been cancelled, do nothing */
	if (data->cancelled == 0)
		goto out_free;
	/* In case of error, no cleanup! */
	if (!data->rpc_done)
		goto out_free;
	state = nfs4_opendata_to_nfs4_state(data);
	if (!IS_ERR(state))
		nfs4_close_state(state, data->o_arg.fmode);
out_free:
	nfs4_opendata_put(data);
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 80 100.00% 7 100.00%
Total 80 100.00% 7 100.00%


static const struct rpc_call_ops nfs4_open_confirm_ops = {
	.rpc_call_prepare = nfs4_open_confirm_prepare,
	.rpc_call_done = nfs4_open_confirm_done,
	.rpc_release = nfs4_open_confirm_release,
};

/*
 * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata
 */


static int _nfs4_proc_open_confirm(struct nfs4_opendata *data)
{
	struct nfs_server *server = NFS_SERVER(d_inode(data->dir));
	struct rpc_task *task;
	struct  rpc_message msg = {
		.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_CONFIRM],
		.rpc_argp = &data->c_arg,
		.rpc_resp = &data->c_res,
		.rpc_cred = data->owner->so_cred,
        };
	struct rpc_task_setup task_setup_data = {
		.rpc_client = server->client,
		.rpc_message = &msg,
		.callback_ops = &nfs4_open_confirm_ops,
		.callback_data = data,
		.workqueue = nfsiod_workqueue,
		.flags = RPC_TASK_ASYNC,
        };
	int status;

	nfs4_init_sequence(&data->c_arg.seq_args, &data->c_res.seq_res, 1);
	kref_get(&data->kref);
	data->rpc_done = 0;
	data->rpc_status = 0;
	data->timestamp = jiffies;
	if (data->is_recover)
		nfs4_set_sequence_privileged(&data->c_arg.seq_args);
	task = rpc_run_task(&task_setup_data);
	if (IS_ERR(task))
		return PTR_ERR(task);
	status = nfs4_wait_for_completion_rpc_task(task);
	if (status != 0) {
		data->cancelled = 1;
		smp_wmb();
	} else
		status = data->rpc_status;
	rpc_put_task(task);
	return status;
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 199 84.68% 12 80.00%
chuck lever chuck lever 17 7.23% 1 6.67%
benjamin coddington benjamin coddington 16 6.81% 1 6.67%
david howells david howells 3 1.28% 1 6.67%
Total 235 100.00% 15 100.00%



static void nfs4_open_prepare(struct rpc_task *task, void *calldata)
{
	struct nfs4_opendata *data = calldata;
	struct nfs4_state_owner *sp = data->owner;
	struct nfs_client *clp = sp->so_server->nfs_client;
	enum open_claim_type4 claim = data->o_arg.claim;

	if (nfs_wait_on_sequence(data->o_arg.seqid, task) != 0)
		goto out_wait;
	/*
         * Check if we still need to send an OPEN call, or if we can use
         * a delegation instead.
         */
	if (data->state != NULL) {
		struct nfs_delegation *delegation;

		if (can_open_cached(data->state, data->o_arg.fmode, data->o_arg.open_flags))
			goto out_no_action;
		rcu_read_lock();
		delegation = rcu_dereference(NFS_I(data->state->inode)->delegation);
		if (can_open_delegated(delegation, data->o_arg.fmode, claim))
			goto unlock_no_action;
		rcu_read_unlock();
	}
	/* Update client id. */
	data->o_arg.clientid = clp->cl_clientid;
	switch (claim) {
	default:
		break;
	case NFS4_OPEN_CLAIM_PREVIOUS:
	case NFS4_OPEN_CLAIM_DELEG_CUR_FH:
	case NFS4_OPEN_CLAIM_DELEG_PREV_FH:
		data->o_arg.open_bitmap = &nfs4_open_noattr_bitmap[0];
	case NFS4_OPEN_CLAIM_FH:
		task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_NOATTR];
		nfs_copy_fh(&data->o_res.fh, data->o_arg.fh);
	}
	data->timestamp = jiffies;
	if (nfs4_setup_sequence(data->o_arg.server,
				&data->o_arg.seq_args,
				&data->o_res.seq_res,
				task) != 0)
		nfs_release_seqid(data->o_arg.seqid);

	/* Set the create mode (note dependency on the session type) */
	data->o_arg.createmode = NFS4_CREATE_UNCHECKED;
	if (data->o_arg.open_flags & O_EXCL) {
		data->o_arg.createmode = NFS4_CREATE_EXCLUSIVE;
		if (nfs4_has_persistent_session(clp))
			data->o_arg.createmode = NFS4_CREATE_GUARDED;
		else if (clp->cl_mvops->minor_version > 0)
			data->o_arg.createmode = NFS4_CREATE_EXCLUSIVE4_1;
	}
	return;
unlock_no_action:
	trace_nfs4_cached_open(data->state);
	rcu_read_unlock();
out_no_action:
	task->tk_action = NULL;
out_wait:
	nfs4_sequence_done(task, &data->o_res.seq_res);
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 322 88.71% 19 86.36%
andy adamson andy adamson 34 9.37% 2 9.09%
olga kornievskaia olga kornievskaia 7 1.93% 1 4.55%
Total 363 100.00% 22 100.00%



static void nfs4_open_done(struct rpc_task *task, void *calldata)
{
	struct nfs4_opendata *data = calldata;

	data->rpc_status = task->tk_status;

	if (!nfs4_sequence_process(task, &data->o_res.seq_res))
		return;

	if (task->tk_status == 0) {
		if (data->o_res.f_attr->valid & NFS_ATTR_FATTR_TYPE) {
			switch (data->o_res.f_attr->mode & S_IFMT) {
			case S_IFREG:
				break;
			case S_IFLNK:
				data->rpc_status = -ELOOP;
				break;
			case S_IFDIR:
				data->rpc_status = -EISDIR;
				break;
			default:
				data->rpc_status = -ENOTDIR;
			}
		}
		renew_lease(data->o_res.server, data->timestamp);
		if (!(data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM))
			nfs_confirm_seqid(&data->owner->so_seqid, 0);
	}
	data->rpc_done = 1;
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 153 94.44% 7 87.50%
andy adamson andy adamson 9 5.56% 1 12.50%
Total 162 100.00% 8 100.00%



static void nfs4_open_release(void *calldata)
{
	struct nfs4_opendata *data = calldata;
	struct nfs4_state *state = NULL;

	/* If this request hasn't been cancelled, do nothing */
	if (data->cancelled == 0)
		goto out_free;
	/* In case of error, no cleanup! */
	if (data->rpc_status != 0 || !data->rpc_done)
		goto out_free;
	/* In case we need an open_confirm, no cleanup! */
	if (data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM)
		goto out_free;
	state = nfs4_opendata_to_nfs4_state(data);
	if (!IS_ERR(state))
		nfs4_close_state(state, data->o_arg.fmode);
out_free:
	nfs4_opendata_put(data);
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 76 76.00% 2 66.67%
jeff layton jeff layton 24 24.00% 1 33.33%
Total 100 100.00% 3 100.00%


static const struct rpc_call_ops nfs4_open_ops = {
	.rpc_call_prepare = nfs4_open_prepare,
	.rpc_call_done = nfs4_open_done,
	.rpc_release = nfs4_open_release,
};



static int nfs4_run_open_task(struct nfs4_opendata *data, int isrecover)
{
	struct inode *dir = d_inode(data->dir);
	struct nfs_server *server = NFS_SERVER(dir);
	struct nfs_openargs *o_arg = &data->o_arg;
	struct nfs_openres *o_res = &data->o_res;
	struct rpc_task *task;
	struct rpc_message msg = {
		.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN],
		.rpc_argp = o_arg,
		.rpc_resp = o_res,
		.rpc_cred = data->owner->so_cred,
        };
	struct rpc_task_setup task_setup_data = {
		.rpc_client = server->client,
		.rpc_message = &msg,
		.callback_ops = &nfs4_open_ops,
		.callback_data = data,
		.workqueue = nfsiod_workqueue,
		.flags = RPC_TASK_ASYNC,
        };
	int status;

	nfs4_init_sequence(&o_arg->seq_args, &o_res->seq_res, 1);
	kref_get(&data->kref);
	data->rpc_done = 0;
	data->rpc_status = 0;
	data->cancelled = 0;
	data->is_recover = 0;
	if (isrecover) {
		nfs4_set_sequence_privileged(&o_arg->seq_args);
		data->is_recover = 1;
	}
	task = rpc_run_task(&task_setup_data);
        if (IS_ERR(task))
                return PTR_ERR(task);
        status = nfs4_wait_for_completion_rpc_task(task);
        if (status != 0) {
                data->cancelled = 1;
                smp_wmb();
        } else
                status = data->rpc_status;
        rpc_put_task(task);

	return status;
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 247 93.21% 11 78.57%
alexandros batsakis alexandros batsakis 14 5.28% 1 7.14%
david howells david howells 3 1.13% 1 7.14%
chuck lever chuck lever 1 0.38% 1 7.14%
Total 265 100.00% 14 100.00%



static int _nfs4_recover_proc_open(struct nfs4_opendata *data)
{
	struct inode *dir = d_inode(data->dir);
	struct nfs_openres *o_res = &data->o_res;
        int status;

	status = nfs4_run_open_task(data, 1);
	if (status != 0 || !data->rpc_done)
		return status;

	nfs_fattr_map_and_free_names(NFS_SERVER(dir), &data->f_attr);

	if (o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) {
		status = _nfs4_proc_open_confirm(data);
		if (status != 0)
			return status;
	}

	return status;
}

Contributors
Person Tokens Prop Commits CommitProp
alexandros batsakis alexandros batsakis 85 84.16% 1 33.33%
trond myklebust trond myklebust 13 12.87% 1 33.33%
david howells david howells 3 2.97% 1 33.33%
Total 101 100.00% 3 100.00%

/*
 * Additional permission checks in order to distinguish between an
 * open for read, and an open for execute. This works around the
 * fact that NFSv4 OPEN treats read and execute permissions as being
 * the same.
 * Note that in the non-execute case, we want to turn off permission
 * checking if we just created a new file (POSIX open() semantics).
 */


static int nfs4_opendata_access(struct rpc_cred *cred,
				struct nfs4_opendata *opendata,
				struct nfs4_state *state, fmode_t fmode,
				int openflags)
{
	struct nfs_access_entry cache;
	u32 mask;

	/* access call failed or for some reason the server doesn't
         * support any access modes -- defer access call until later */
	if (opendata->o_res.access_supported == 0)
		return 0;

	mask = 0;
	/*
         * Use openflags to check for exec, because fmode won't
         * always have FMODE_EXEC set when file open for exec.
         */
	if (openflags & __FMODE_EXEC) {
		/* ONLY check for exec rights */
		mask = MAY_EXEC;
	} else if ((fmode & FMODE_READ) && !opendata->file_created)
		mask = MAY_READ;

	cache.cred = cred;
	cache.jiffies = jiffies;
	nfs_access_set_mask(&cache, opendata->o_res.access_result);
	nfs_access_add_cache(state->inode, &cache);

	if ((mask & ~cache.mask & (MAY_READ | MAY_EXEC)) == 0)
		return 0;

	/* even though OPEN succeeded, access is denied. Close the file */
	nfs4_close_state(state, fmode);
	return -EACCES;
}

Contributors
Person Tokens Prop Commits CommitProp
weston andros adamson weston andros adamson 144 94.74% 3 75.00%
trond myklebust trond myklebust 8 5.26% 1 25.00%
Total 152 100.00% 4 100.00%

/*
 * Note: On error, nfs4_proc_open will free the struct nfs4_opendata
 */


static int _nfs4_proc_open(struct nfs4_opendata *data)
{
	struct inode *dir = d_inode(data->dir);
	struct nfs_server *server = NFS_SERVER(dir);
	struct nfs_openargs *o_arg = &data->o_arg;
	struct nfs_openres *o_res = &data->o_res;
	int status;

	status = nfs4_run_open_task(data, 0);
	if (!data->rpc_done)
		return status;
	if (status != 0) {
		if (status == -NFS4ERR_BADNAME &&
				!(o_arg->open_flags & O_CREAT))
			return -ENOENT;
		return status;
	}

	nfs_fattr_map_and_free_names(server, &data->f_attr);

	if (o_arg->open_flags & O_CREAT) {
		if (o_arg->open_flags & O_EXCL)
			data->file_created = 1;
		else if (o_res->cinfo.before != o_res->cinfo.after)
			data->file_created = 1;
		if (data->file_created || dir->i_version != o_res->cinfo.after)
			update_changeattr(dir, &o_res->cinfo,
					o_res->f_attr->time_start);
	}
	if ((o_res->rflags & NFS4_OPEN_RESULT_LOCKTYPE_POSIX) == 0)
		server->caps &= ~NFS_CAP_POSIX_LOCK;
	if(o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) {
		status = _nfs4_proc_open_confirm(data);
		if (status != 0)
			return status;
	}
	if (!(o_res->f_attr->valid & NFS_ATTR_FATTR))
		nfs4_proc_getattr(server, &o_res->fh, o_res->f_attr, o_res->f_label);
	return 0;
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 203 74.63% 10 71.43%
alexandros batsakis alexandros batsakis 61 22.43% 1 7.14%
david quigley david quigley 4 1.47% 1 7.14%
david howells david howells 3 1.10% 1 7.14%
andy adamson andy adamson 1 0.37% 1 7.14%
Total 272 100.00% 14 100.00%



static int nfs4_recover_expired_lease(struct nfs_server *server)
{
	return nfs4_client_recover_expired_lease(server->nfs_client);
}

Contributors
Person Tokens Prop Commits CommitProp
andy adamson andy adamson 19 100.00% 1 100.00%
Total 19 100.00% 1 100.00%

/*
 * OPEN_EXPIRED:
 *      reclaim state on the server after a network partition.
 *      Assumes caller holds the appropriate lock
 */


static int _nfs4_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state)
{
	struct nfs4_opendata *opendata;
	int ret;

	opendata = nfs4_open_recoverdata_alloc(ctx, state,
			NFS4_OPEN_CLAIM_FH);
	if (IS_ERR(opendata))
		return PTR_ERR(opendata);
	ret = nfs4_open_recover(opendata, state);
	if (ret == -ESTALE)
		d_drop(ctx->dentry);
	nfs4_opendata_put(opendata);
	return ret;
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 79 100.00% 12 100.00%
Total 79 100.00% 12 100.00%



static int nfs4_do_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state)
{
	struct nfs_server *server = NFS_SERVER(state->inode);
	struct nfs4_exception exception = { };
	int err;

	do {
		err = _nfs4_open_expired(ctx, state);
		trace_nfs4_open_expired(ctx, 0, err);
		if (nfs4_clear_cap_atomic_open_v1(server, err, &exception))
			continue;
		switch (err) {
		default:
			goto out;
		case -NFS4ERR_GRACE:
		case -NFS4ERR_DELAY:
			nfs4_handle_exception(server, err, &exception);
			err = 0;
		}
	} while (exception.retry);
out:
	return err;
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 115 100.00% 9 100.00%
Total 115 100.00% 9 100.00%



static int nfs4_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state)
{
	struct nfs_open_context *ctx;
	int ret;

	ctx = nfs4_state_find_open_context(state);
	if (IS_ERR(ctx))
		return -EAGAIN;
	ret = nfs4_do_open_expired(ctx, state);
	put_nfs_open_context(ctx);
	return ret;
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 59 100.00% 4 100.00%
Total 59 100.00% 4 100.00%



static void nfs_finish_clear_delegation_stateid(struct nfs4_state *state,
		const nfs4_stateid *stateid)
{
	nfs_remove_bad_delegation(state->inode, stateid);
	write_seqlock(&state->seqlock);
	nfs4_stateid_copy(&state->stateid, &state->open_stateid);
	write_sequnlock(&state->seqlock);
	clear_bit(NFS_DELEGATED_STATE, &state->flags);
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 64 100.00% 2 100.00%
Total 64 100.00% 2 100.00%



static void nfs40_clear_delegation_stateid(struct nfs4_state *state)
{
	if (rcu_access_pointer(NFS_I(state->inode)->delegation) != NULL)
		nfs_finish_clear_delegation_stateid(state, NULL);
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 34 100.00% 2 100.00%
Total 34 100.00% 2 100.00%



static int nfs40_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state)
{
	/* NFSv4.0 doesn't allow for delegation recovery on open expire */
	nfs40_clear_delegation_stateid(state);
	return nfs4_open_expired(sp, state);
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 30 100.00% 1 100.00%
Total 30 100.00% 1 100.00%



static int nfs40_test_and_free_expired_stateid(struct nfs_server *server,
		nfs4_stateid *stateid,
		struct rpc_cred *cred)
{
	return -NFS4ERR_BAD_STATEID;
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 24 100.00% 1 100.00%
Total 24 100.00% 1 100.00%

#if defined(CONFIG_NFS_V4_1)


static int nfs41_test_and_free_expired_stateid(struct nfs_server *server,
		nfs4_stateid *stateid,
		struct rpc_cred *cred)
{
	int status;

	switch (stateid->type) {
	default:
		break;
	case NFS4_INVALID_STATEID_TYPE:
	case NFS4_SPECIAL_STATEID_TYPE:
		return -NFS4ERR_BAD_STATEID;
	case NFS4_REVOKED_STATEID_TYPE:
		goto out_free;
	}

	status = nfs41_test_stateid(server, stateid, cred);
	switch (status) {
	case -NFS4ERR_EXPIRED:
	case -NFS4ERR_ADMIN_REVOKED:
	case -NFS4ERR_DELEG_REVOKED:
		break;
	default:
		return status;
	}
out_free:
	/* Ack the revoked state to the server */
	nfs41_free_stateid(server, stateid, cred, true);
	return -NFS4ERR_EXPIRED;
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 101 100.00% 3 100.00%
Total 101 100.00% 3 100.00%



static void nfs41_check_delegation_stateid(struct nfs4_state *state)
{
	struct nfs_server *server = NFS_SERVER(state->inode);
	nfs4_stateid stateid;
	struct nfs_delegation *delegation;
	struct rpc_cred *cred;
	int status;

	/* Get the delegation credential for use by test/free_stateid */
	rcu_read_lock();
	delegation = rcu_dereference(NFS_I(state->inode)->delegation);
	if (delegation == NULL) {
		rcu_read_unlock();
		return;
	}

	nfs4_stateid_copy(&stateid, &delegation->stateid);
	if (test_bit(NFS_DELEGATION_REVOKED, &delegation->flags)) {
		rcu_read_unlock();
		nfs_finish_clear_delegation_stateid(state, &stateid);
		return;
	}

	if (!test_and_clear_bit(NFS_DELEGATION_TEST_EXPIRED, &delegation->flags)) {
		rcu_read_unlock();
		return;
	}

	cred = get_rpccred(delegation->cred);
	rcu_read_unlock();
	status = nfs41_test_and_free_expired_stateid(server, &stateid, cred);
	trace_nfs4_test_delegation_stateid(state, NULL, status);
	if (status == -NFS4ERR_EXPIRED || status == -NFS4ERR_BAD_STATEID)
		nfs_finish_clear_delegation_stateid(state, &stateid);

	put_rpccred(cred);
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 139 75.96% 8 72.73%
chuck lever chuck lever 36 19.67% 1 9.09%
bryan schumaker bryan schumaker 8 4.37% 2 18.18%
Total 183 100.00% 11 100.00%

/**
 * nfs41_check_expired_locks - possibly free a lock stateid
 *
 * @state: NFSv4 state for an inode
 *
 * Returns NFS_OK if recovery for this stateid is now finished.
 * Otherwise a negative NFS4ERR value is returned.
 */


static int nfs41_check_expired_locks(struct nfs4_state *state)
{
	int status, ret = NFS_OK;
	struct nfs4_lock_state *lsp, *prev = NULL;
	struct nfs_server *server = NFS_SERVER(state->inode);

	if (!test_bit(LK_STATE_IN_USE, &state->flags))
		goto out;

	spin_lock(&state->state_lock);
	list_for_each_entry(lsp, &state->lock_states, ls_locks) {
		if (test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags)) {
			struct rpc_cred *cred = lsp->ls_state->owner->so_cred;

			atomic_inc(&lsp->ls_count);
			spin_unlock(&state->state_lock);

			nfs4_put_lock_state(prev);
			prev = lsp;

			status = nfs41_test_and_free_expired_stateid(server,
					&lsp->ls_stateid,
					cred);
			trace_nfs4_test_lock_stateid(state, lsp, status);
			if (status == -NFS4ERR_EXPIRED ||
			    status == -NFS4ERR_BAD_STATEID) {
				clear_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags);
				lsp->ls_stateid.type = NFS4_INVALID_STATEID_TYPE;
				if (!recover_lost_locks)
					set_bit(NFS_LOCK_LOST, &lsp->ls_flags);
			} else if (status != NFS_OK) {
				ret = status;
				nfs4_put_lock_state(prev);
				goto out;
			}
			spin_lock(&state->state_lock);
		}
	}
	spin_unlock(&state->state_lock);
	nfs4_put_lock_state(prev);
out:
	return ret;
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 158 65.02% 4 57.14%
benjamin coddington benjamin coddington 67 27.57% 1 14.29%
chuck lever chuck lever 14 5.76% 1 14.29%
bryan schumaker bryan schumaker 4 1.65% 1 14.29%
Total 243 100.00% 7 100.00%

/**
 * nfs41_check_open_stateid - possibly free an open stateid
 *
 * @state: NFSv4 state for an inode
 *
 * Returns NFS_OK if recovery for this stateid is now finished.
 * Otherwise a negative NFS4ERR value is returned.
 */


static int nfs41_check_open_stateid(struct nfs4_state *state)
{
	struct nfs_server *server = NFS_SERVER(state->inode);
	nfs4_stateid *stateid = &state->open_stateid;
	struct rpc_cred *cred = state->owner->so_cred;
	int status;

	if (test_bit(NFS_OPEN_STATE, &state->flags) == 0) {
		if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0)  {
			if (nfs4_have_delegation(state->inode, state->state))
				return NFS_OK;
			return -NFS4ERR_OPENMODE;
		}
		return -NFS4ERR_BAD_STATEID;
	}
	status = nfs41_test_and_free_expired_stateid(server, stateid, cred);
	trace_nfs4_test_open_stateid(state, NULL, status);
	if (status == -NFS4ERR_EXPIRED || status == -NFS4ERR_BAD_STATEID) {
		clear_bit(NFS_O_RDONLY_STATE, &state->flags);
		clear_bit(NFS_O_WRONLY_STATE, &state->flags);
		clear_bit(NFS_O_RDWR_STATE, &state->flags);
		clear_bit(NFS_OPEN_STATE, &state->flags);
		stateid->type = NFS4_INVALID_STATEID_TYPE;
	}
	if (status != NFS_OK)
		return status;
	if (nfs_open_stateid_recover_openmode(state))
		return -NFS4ERR_OPENMODE;
	return NFS_OK;
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 83 40.49% 8 53.33%
chuck lever chuck lever 75 36.59% 3 20.00%
bryan schumaker bryan schumaker 47 22.93% 4 26.67%
Total 205 100.00% 15 100.00%



static int nfs41_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state)
{
	int status;

	nfs41_check_delegation_stateid(state);
	status = nfs41_check_expired_locks(state);
	if (status != NFS_OK)
		return status;
	status = nfs41_check_open_stateid(state);
	if (status != NFS_OK)
		status = nfs4_open_expired(sp, state);
	return status;
}
Contributors
Person Tokens Prop Commits CommitProp
bryan schumaker bryan schumaker 37 56.92% 2 33.33%
trond myklebust trond myklebust 17 26.15% 2 33.33%
chuck lever chuck lever 11 16.92% 2 33.33%
Total 65 100.00% 6 100.00%

#endif

/*
 * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-*
 * fields corresponding to attributes that were used to store the verifier.
 * Make sure we clobber those fields in the later setattr call
 */


static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata,
				struct iattr *sattr, struct nfs4_label **label)
{
	const u32 *attrset = opendata->o_res.attrset;

	if ((attrset[1] & FATTR4_WORD1_TIME_ACCESS) &&
	    !(sattr->ia_valid & ATTR_ATIME_SET))
		sattr->ia_valid |= ATTR_ATIME;

	if ((attrset[1] & FATTR4_WORD1_TIME_MODIFY) &&
	    !(sattr->ia_valid & ATTR_MTIME_SET))
		sattr->ia_valid |= ATTR_MTIME;

	/* Except MODE, it seems harmless of setting twice. */
	if (opendata->o_arg.createmode != NFS4_CREATE_EXCLUSIVE &&
		attrset[1] & FATTR4_WORD1_MODE)
		sattr->ia_valid &= ~ATTR_MODE;

	if (attrset[2] & FATTR4_WORD2_SECURITY_LABEL)
		*label = NULL;
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 70 56.00% 3 60.00%
kinglong mee kinglong mee 47 37.60% 1 20.00%
benjamin coddington benjamin coddington 8 6.40% 1 20.00%
Total 125 100.00% 5 100.00%



static int _nfs4_open_and_get_state(struct nfs4_opendata *opendata,
		fmode_t fmode,
		int flags,
		struct nfs_open_context *ctx)
{
	struct nfs4_state_owner *sp = opendata->owner;
	struct nfs_server *server = sp->so_server;
	struct dentry *dentry;
	struct nfs4_state *state;
	unsigned int seq;
	int ret;

	seq = raw_seqcount_begin(&sp->so_reclaim_seqcount);

	ret = _nfs4_proc_open(opendata);
	if (ret != 0)
		goto out;

	state = nfs4_opendata_to_nfs4_state(opendata);
	ret = PTR_ERR(state);
	if (IS_ERR(state))
		goto out;
	if (server->caps & NFS_CAP_POSIX_LOCK)
		set_bit(NFS_STATE_POSIX_LOCKS, &state->flags);
	if (opendata->o_res.rflags & NFS4_OPEN_RESULT_MAY_NOTIFY_LOCK)
		set_bit(NFS_STATE_MAY_NOTIFY_LOCK, &state->flags);

	dentry = opendata->dentry;
	if (d_really_is_negative(dentry)) {
		struct dentry *alias;
		d_drop(dentry);
		alias = d_exact_alias(dentry, state->inode);
		if (!alias)
			alias = d_splice_alias(igrab(state->inode), dentry);
		/* d_splice_alias() can't fail here - it's a non-directory */
		if (alias) {
			dput(ctx->dentry);
			ctx->dentry = dentry = alias;
		}
		nfs_set_verifier(dentry,
				nfs_save_change_attribute(d_inode(opendata->dir)));
	}

	ret = nfs4_opendata_access(sp->so_cred, opendata, state, fmode, flags);
	if (ret != 0)
		goto out;

	ctx->state = state;
	if (d_inode(dentry) == state->inode) {
		nfs_inode_attach_open_context(ctx);
		if (read_seqcount_retry(&sp->so_reclaim_seqcount, seq))
			nfs4_schedule_stateid_recovery(server, state);
	}
out:
	return ret;
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 259 83.28% 4 57.14%
al viro al viro 23 7.40% 1 14.29%
jeff layton jeff layton 20 6.43% 1 14.29%
david howells david howells 9 2.89% 1 14.29%
Total 311 100.00% 7 100.00%

/*
 * Returns a referenced nfs4_state
 */


static int _nfs4_do_open(struct inode *dir,
			struct nfs_open_context *ctx,
			int flags,
			struct iattr *sattr,
			struct nfs4_label *label,
			int *opened)
{
	struct nfs4_state_owner  *sp;
	struct nfs4_state     *state = NULL;
	struct nfs_server       *server = NFS_SERVER(dir);
	struct nfs4_opendata *opendata;
	struct dentry *dentry = ctx->dentry;
	struct rpc_cred *cred = ctx->cred;
	struct nfs4_threshold **ctx_th = &ctx->mdsthreshold;
	fmode_t fmode = ctx->mode & (FMODE_READ|FMODE_WRITE|FMODE_EXEC);
	enum open_claim_type4 claim = NFS4_OPEN_CLAIM_NULL;
	struct nfs4_label *olabel = NULL;
	int status;

	/* Protect against reboot recovery conflicts */
	status = -ENOMEM;
	sp = nfs4_get_state_owner(server, cred, GFP_KERNEL);
	if (sp == NULL) {
		dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n");
		goto out_err;
	}
	status = nfs4_recover_expired_lease(server);
	if (status != 0)
		goto err_put_state_owner;
	if (d_really_is_positive(dentry))
		nfs4_return_incompatible_delegation(d_inode(dentry), fmode);
	status = -ENOMEM;
	if (d_really_is_positive(dentry))
		claim = NFS4_OPEN_CLAIM_FH;
	opendata = nfs4_opendata_alloc(dentry, sp, fmode, flags, sattr,
			label, claim, GFP_KERNEL);
	if (opendata == NULL)
		goto err_put_state_owner;

	if (label) {
		olabel = nfs4_label_alloc(server, GFP_KERNEL);
		if (IS_ERR(olabel)) {
			status = PTR_ERR(olabel);
			goto err_opendata_put;
		}
	}

	if (server->attr_bitmask[2] & FATTR4_WORD2_MDSTHRESHOLD) {
		if (!opendata->f_attr.mdsthreshold) {
			opendata->f_attr.mdsthreshold = pnfs_mdsthreshold_alloc();
			if (!opendata->f_attr.mdsthreshold)
				goto err_free_label;
		}
		opendata->o_arg.open_bitmap = &nfs4_pnfs_open_bitmap[0];
	}
	if (d_really_is_positive(dentry))
		opendata->state = nfs4_get_open_state(d_inode(dentry), sp);

	status = _nfs4_open_and_get_state(opendata, fmode, flags, ctx);
	if (status != 0)
		goto err_free_label;
	state = ctx->state;

	if ((opendata->o_arg.open_flags & (O_CREAT|O_EXCL)) == (O_CREAT|O_EXCL) &&
	    (opendata->o_arg.createmode != NFS4_CREATE_GUARDED)) {
		nfs4_exclusive_attrset(opendata, sattr, &label);
		/*
                 * send create attributes which was not set by open
                 * with an extra setattr.
                 */
		if (sattr->ia_valid & NFS4_VALID_ATTRS) {
			nfs_fattr_init(opendata->o_res.f_attr);
			status = nfs4_do_setattr(state->inode, cred,
					opendata->o_res.f_attr, sattr,
					ctx, label, olabel);
			if (status == 0) {
				nfs_setattr_update_inode(state->inode, sattr,
						opendata->o_res.f_attr);
				nfs_setsecurity(state->inode, opendata->o_res.f_attr, olabel);
			}
		}
	}
	if (opened && opendata->file_created)
		*opened |= FILE_CREATED;

	if (pnfs_use_threshold(ctx_th, opendata->f_attr.mdsthreshold, server)) {
		*ctx_th = opendata->f_attr.mdsthreshold;
		opendata->f_attr.mdsthreshold = NULL;
	}

	nfs4_label_free(olabel);

	nfs4_opendata_put(opendata);
	nfs4_put_state_owner(sp);
	return 0;
err_free_label:
	nfs4_label_free(olabel);
err_opendata_put:
	nfs4_opendata_put(opendata);
err_put_state_owner:
	nfs4_put_state_owner(sp);
out_err:
	return status;
}


Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 389 65.93% 24 64.86%
david quigley david quigley 79 13.39% 3 8.11%
andy adamson andy adamson 65 11.02% 1 2.70%
david howells david howells 15 2.54% 1 2.70%
weston andros adamson weston andros adamson 14 2.37% 2 5.41%
neil brown neil brown 11 1.86% 2 5.41%
tigran mkrtchyan tigran mkrtchyan 11 1.86% 1 2.70%
kinglong mee kinglong mee 5 0.85% 2 5.41%
al viro al viro 1 0.17% 1 2.70%
Total 590 100.00% 37 100.00%



static struct nfs4_state *nfs4_do_open(struct inode *dir,
					struct nfs_open_context *ctx,
					int flags,
					struct iattr *sattr,
					struct nfs4_label *label,
					int *opened)
{
	struct nfs_server *server = NFS_SERVER(dir);
	struct nfs4_exception exception = { };
	struct nfs4_state *res;
	int status;

	do {
		status = _nfs4_do_open(dir, ctx, flags, sattr, label, opened);
		res = ctx->state;
		trace_nfs4_open_file(ctx, flags, status);
		if (status == 0)
			break;
		/* NOTE: BAD_SEQID means the server and client disagree about the
                 * book-keeping w.r.t. state-changing operations
                 * (OPEN/CLOSE/LOCK/LOCKU...)
                 * It is actually a sign of a bug on the client or on the server.
                 *
                 * If we receive a BAD_SEQID error in the particular case of
                 * doing an OPEN, we assume that nfs_increment_open_seqid() will
                 * have unhashed the old state_owner for us, and that we can
                 * therefore safely retry using a new one. We should still warn
                 * the user though...
                 */
		if (status == -NFS4ERR_BAD_SEQID) {
			pr_warn_ratelimited("NFS: v4 server %s "
					" returned a bad sequence-id error!\n",
					NFS_SERVER(dir)->nfs_client->cl_hostname);
			exception.retry = 1;
			continue;
		}
		/*
                 * BAD_STATEID on OPEN means that the server cancelled our
                 * state before it received the OPEN_CONFIRM.
                 * Recover by retrying the request as per the discussion
                 * on Page 181 of RFC3530.
                 */
		if (status == -NFS4ERR_BAD_STATEID) {
			exception.retry = 1;
			continue;
		}
		if (status == -EAGAIN) {
			/* We must have found a delegation */
			exception.retry = 1;
			continue;
		}
		if (nfs4_clear_cap_atomic_open_v1(server, status, &exception))
			continue;
		res = ERR_PTR(nfs4_handle_exception(server,
					status, &exception));
	} while (exception.retry);
	return res;
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 202 98.54% 18 94.74%
david quigley david quigley 3 1.46% 1 5.26%
Total 205 100.00% 19 100.00%



static int _nfs4_do_setattr(struct inode *inode,
			    struct nfs_setattrargs *arg,
			    struct nfs_setattrres *res,
			    struct rpc_cred *cred,
			    struct nfs_open_context *ctx)
{
	struct nfs_server *server = NFS_SERVER(inode);
        struct rpc_message msg = {
		.rpc_proc	= &nfs4_procedures[NFSPROC4_CLNT_SETATTR],
		.rpc_argp	= arg,
		.rpc_resp	= res,
		.rpc_cred	= cred,
        };
	struct rpc_cred *delegation_cred = NULL;
	unsigned long timestamp = jiffies;
	fmode_t fmode;
	bool truncate;
	int status;

	nfs_fattr_init(res->fattr);

	/* Servers should only apply open mode checks for file size changes */
	truncate = (arg->iap->ia_valid & ATTR_SIZE) ? true : false;
	fmode = truncate ? FMODE_WRITE : FMODE_READ;

	if (nfs4_copy_delegation_stateid(inode, fmode, &arg->stateid, &delegation_cred)) {
		/* Use that stateid */
	} else if (truncate && ctx != NULL) {
		struct nfs_lock_context *l_ctx;
		if (!nfs4_valid_open_stateid(ctx->state))
			return -EBADF;
		l_ctx = nfs_get_lock_context(ctx);
		if (IS_ERR(l_ctx))
			return PTR_ERR(l_ctx);
		status = nfs4_select_rw_stateid(ctx->state, FMODE_WRITE, l_ctx,
						&arg->stateid, &delegation_cred);
		nfs_put_lock_context(l_ctx);
		if (status == -EIO)
			return -EBADF;
	} else
		nfs4_stateid_copy(&arg->stateid, &zero_stateid);
	if (delegation_cred)
		msg.rpc_cred = delegation_cred;

	status = nfs4_call_sync(server->client, server, &msg, &arg->seq_args, &res->seq_res, 1);

	put_rpccred(delegation_cred);
	if (status == 0 && ctx != NULL)
		renew_lease(server, timestamp);
	trace_nfs4_setattr(inode, &arg->stateid, status);
	return status;
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 249 78.55% 16 69.57%
neil brown neil brown 43 13.56% 3 13.04%
olga kornievskaia olga kornievskaia 11 3.47% 1 4.35%
andy adamson andy adamson 8 2.52% 1 4.35%
bryan schumaker bryan schumaker 6 1.89% 2 8.70%
Total 317 100.00% 23 100.00%



static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred,
			   struct nfs_fattr *fattr, struct iattr *sattr,
			   struct nfs_open_context *ctx, struct nfs4_label *ilabel,
			   struct nfs4_label *olabel)
{
	struct nfs_server *server = NFS_SERVER(inode);
	struct nfs4_state *state = ctx ? ctx->state : NULL;
        struct nfs_setattrargs  arg = {
                .fh             = NFS_FH(inode),
                .iap            = sattr,
		.server		= server,
		.bitmask = server->attr_bitmask,
		.label		= ilabel,
        };
        struct nfs_setattrres  res = {
		.fattr		= fattr,
		.label		= olabel,
		.server		= server,
        };
	struct nfs4_exception exception = {
		.state = state,
		.inode = inode,
		.stateid = &arg.stateid,
        };
	int err;

	arg.bitmask = nfs4_bitmask(server, ilabel);
	if (ilabel)
		arg.bitmask = nfs4_bitmask(server, olabel);

	do {
		err = _nfs4_do_setattr(inode, &arg, &res, cred, ctx);
		switch (err) {
		case -NFS4ERR_OPENMODE:
			if (!(sattr->ia_valid & ATTR_SIZE)) {
				pr_warn_once("NFSv4: server %s is incorrectly "
						"applying open mode checks to "
						"a SETATTR that is not "
						"changing file size.\n",
						server->nfs_client->cl_hostname);
			}
			if (state && !(state->state & FMODE_WRITE)) {
				err = -EBADF;
				if (sattr->ia_valid & ATTR_OPEN)
					err = -EACCES;
				goto out;
			}
		}
		err = nfs4_handle_exception(server, err, &exception);
	} while (exception.retry);
out:
	return err;
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 265 91.07% 11 84.62%
neil brown neil brown 16 5.50% 1 7.69%
david quigley david quigley 10 3.44% 1 7.69%
Total 291 100.00% 13 100.00%


static bool

nfs4_wait_on_layoutreturn(struct inode *inode, struct rpc_task *task)
{
	if (inode == NULL || !nfs_have_layout(inode))
		return false;

	return pnfs_wait_on_layoutreturn(inode, task);
}

Contributors
Person Tokens Prop Commits CommitProp
peng tao peng tao 39 100.00% 1 100.00%
Total 39 100.00% 1 100.00%


struct nfs4_closedata {
	
struct inode *inode;
	
struct nfs4_state *state;
	
struct nfs_closeargs arg;
	
struct nfs_closeres res;
	struct {
		
struct nfs4_layoutreturn_args arg;
		
struct nfs4_layoutreturn_res res;
		
struct nfs4_xdr_opaque_data ld_private;
		
u32 roc_barrier;
		
bool roc;
	} 
lr;
	
struct nfs_fattr fattr;
	
unsigned long timestamp;
};



static void nfs4_free_closedata(void *data)
{
	struct nfs4_closedata *calldata = data;
	struct nfs4_state_owner *sp = calldata->state->owner;
	struct super_block *sb = calldata->state->inode->i_sb;

	if (calldata->lr.roc)
		pnfs_roc_release(&calldata->lr.arg, &calldata->lr.res,
				calldata->res.lr_ret);
	nfs4_put_open_state(calldata->state);
	nfs_free_seqid(calldata->arg.seqid);
	nfs4_put_state_owner(sp);
	nfs_sb_deactive(sb);
	kfree(calldata);
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 76 73.79% 10 83.33%
al viro al viro 14 13.59% 1 8.33%
fred isaman fred isaman 13 12.62% 1 8.33%
Total 103 100.00% 12 100.00%



static void nfs4_close_done(struct rpc_task *task, void *data)
{
	struct nfs4_closedata *calldata = data;
	struct nfs4_state *state = calldata->state;
	struct nfs_server *server = NFS_SERVER(calldata->inode);
	nfs4_stateid *res_stateid = NULL;

	dprintk("%s: begin!\n", __func__);
	if (!nfs4_sequence_done(task, &calldata->res.seq_res))
		return;
	trace_nfs4_close(state, &calldata->arg, &calldata->res, task->tk_status);

	/* Handle Layoutreturn errors */
	if (calldata->arg.lr_args && task->tk_status != 0) {
		switch (calldata->res.lr_ret) {
		default:
			calldata->res.lr_ret = -NFS4ERR_NOMATCHING_LAYOUT;
			break;
		case 0:
			calldata->arg.lr_args = NULL;
			calldata->res.lr_res = NULL;
			break;
		case -NFS4ERR_ADMIN_REVOKED:
		case -NFS4ERR_DELEG_REVOKED:
		case -NFS4ERR_EXPIRED:
		case -NFS4ERR_BAD_STATEID:
		case -NFS4ERR_OLD_STATEID:
		case -NFS4ERR_UNKNOWN_LAYOUTTYPE:
		case -NFS4ERR_WRONG_CRED:
			calldata->arg.lr_args = NULL;
			calldata->res.lr_res = NULL;
			calldata->res.lr_ret = 0;
			rpc_restart_call_prepare(task);
			return;
		}
	}

        /* hmm. we are done with the inode, and in the process of freeing
         * the state_owner. we keep this around to process errors
         */
	switch (task->tk_status) {
		case 0:
			res_stateid = &calldata->res.stateid;
			renew_lease(server, calldata->timestamp);
			break;
		case -NFS4ERR_ACCESS:
			if (calldata->arg.bitmask != NULL) {
				calldata->arg.bitmask = NULL;
				calldata->res.fattr = NULL;
				task->tk_status = 0;
				rpc_restart_call_prepare(task);
				goto out_release;

			}
			break;
		case -NFS4ERR_ADMIN_REVOKED:
		case -NFS4ERR_STALE_STATEID:
		case -NFS4ERR_EXPIRED:
			nfs4_free_revoked_stateid(server,
					&calldata->arg.stateid,
					task->tk_msg.rpc_cred);
		case -NFS4ERR_OLD_STATEID:
		case -NFS4ERR_BAD_STATEID:
			if (!nfs4_stateid_match(&calldata->arg.stateid,
						&state->open_stateid)) {
				rpc_restart_call_prepare(task);
				goto out_release;
			}
			if (calldata->arg.fmode == 0)
				break;
		default:
			if (nfs4_async_handle_error(task, server, state, NULL) == -EAGAIN) {
				rpc_restart_call_prepare(task);
				goto out_release;
			}
	}
	nfs_clear_open_stateid(state, &calldata->arg.stateid,
			res_stateid, calldata->arg.fmode);
out_release:
	nfs_release_seqid(calldata->arg.seqid);
	nfs_refresh_inode(calldata->inode, &calldata->fattr);
	dprintk("%s: done, ret = %d!\n", __func__, task->tk_status);
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 412 93.00% 25 86.21%
chuck lever chuck lever 18 4.06% 1 3.45%
andy adamson andy adamson 10 2.26% 1 3.45%
neil brown neil brown 2 0.45% 1 3.45%
anna schumaker anna schumaker 1 0.23% 1 3.45%
Total 443 100.00% 29 100.00%



static void nfs4_close_prepare(struct rpc_task *task, void *data)
{
	struct nfs4_closedata *calldata = data;
	struct nfs4_state *state = calldata->state;
	struct inode *inode = calldata->inode;
	bool is_rdonly, is_wronly, is_rdwr;
	int call_close = 0;

	dprintk("%s: begin!\n", __func__);
	if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0)
		goto out_wait;

	task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE];
	spin_lock(&state->owner->so_lock);
	is_rdwr = test_bit(NFS_O_RDWR_STATE, &state->flags);
	is_rdonly = test_bit(NFS_O_RDONLY_STATE, &state->flags);
	is_wronly = test_bit(NFS_O_WRONLY_STATE, &state->flags);
	nfs4_stateid_copy(&calldata->arg.stateid, &state->open_stateid);
	/* Calculate the change in open mode */
	calldata->arg.fmode = 0;
	if (state->n_rdwr == 0) {
		if (state->n_rdonly == 0)
			call_close |= is_rdonly;
		else if (is_rdonly)
			calldata->arg.fmode |= FMODE_READ;
		if (state->n_wronly == 0)
			call_close |= is_wronly;
		else if (is_wronly)
			calldata->arg.fmode |= FMODE_WRITE;
		if (calldata->arg.fmode != (FMODE_READ|FMODE_WRITE))
			call_close |= is_rdwr;
	} else if (is_rdwr)
		calldata->arg.fmode |= FMODE_READ|FMODE_WRITE;

	if (!nfs4_valid_open_stateid(state) ||
	    test_bit(NFS_OPEN_STATE, &state->flags) == 0)
		call_close = 0;
	spin_unlock(&state->owner->so_lock);

	if (!call_close) {
		/* Note: exit _without_ calling nfs4_close_done */
		goto out_no_action;
	}

	if (!calldata->lr.roc && nfs4_wait_on_layoutreturn(inode, task)) {
		nfs_release_seqid(calldata->arg.seqid);
		goto out_wait;
	}

	if (calldata->arg.fmode == 0)
		task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE];

	if (calldata->arg.fmode == 0 || calldata->arg.fmode == FMODE_READ) {
		/* Close-to-open cache consistency revalidation */
		if (!nfs4_have_delegation(inode, FMODE_READ))
			calldata->arg.bitmask = NFS_SERVER(inode)->cache_consistency_bitmask;
		else
			calldata->arg.bitmask = NULL;
	}

	calldata->arg.share_access =
		nfs4_map_atomic_open_share(NFS_SERVER(inode),
				calldata->arg.fmode, 0);

	if (calldata->res.fattr == NULL)
		calldata->arg.bitmask = NULL;
	else if (calldata->arg.bitmask == NULL)
		calldata->res.fattr = NULL;
	calldata->timestamp = jiffies;
	if (nfs4_setup_sequence(NFS_SERVER(inode),
				&calldata->arg.seq_args,
				&calldata->res.seq_res,
				task) != 0)
		nfs_release_seqid(calldata->arg.seqid);
	dprintk("%s: done!\n", __func__);
	return;
out_no_action:
	task->tk_action = NULL;
out_wait:
	nfs4_sequence_done(task, &calldata->res.seq_res);
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 468 87.64% 28 87.50%
andy adamson andy adamson 26 4.87% 1 3.12%
peng tao peng tao 23 4.31% 1 3.12%
chuck lever chuck lever 16 3.00% 1 3.12%
anna schumaker anna schumaker 1 0.19% 1 3.12%
Total 534 100.00% 32 100.00%


static const struct rpc_call_ops nfs4_close_ops = {
	.rpc_call_prepare = nfs4_close_prepare,
	.rpc_call_done = nfs4_close_done,
	.rpc_release = nfs4_free_closedata,
};

/* 
 * It is possible for data to be read/written from a mem-mapped file 
 * after the sys_close call (which hits the vfs layer as a flush).
 * This means that we can't safely call nfsv4 close on a file until 
 * the inode is cleared. This in turn means that we are not good
 * NFSv4 citizens - we do not indicate to the server to update the file's 
 * share state even when we are done with one of the three share 
 * stateid's in the inode.
 *
 * NOTE: Caller must be holding the sp->so_owner semaphore!
 */


int nfs4_do_close(struct nfs4_state *state, gfp_t gfp_mask, int wait)
{
	struct nfs_server *server = NFS_SERVER(state->inode);
	struct nfs_seqid *(*alloc_seqid)(struct nfs_seqid_counter *, gfp_t);
	struct nfs4_closedata *calldata;
	struct nfs4_state_owner *sp = state->owner;
	struct rpc_task *task;
	struct rpc_message msg = {
		.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE],
		.rpc_cred = state->owner->so_cred,
        };
	struct rpc_task_setup task_setup_data = {
		.rpc_client = server->client,
		.rpc_message = &msg,
		.callback_ops = &nfs4_close_ops,
		.workqueue = nfsiod_workqueue,
		.flags = RPC_TASK_ASYNC,
        };
	int status = -ENOMEM;

	nfs4_state_protect(server->nfs_client, NFS_SP4_MACH_CRED_CLEANUP,
		&task_setup_data.rpc_client, &msg);

	calldata = kzalloc(sizeof(*calldata), gfp_mask);
	if (calldata == NULL)
		goto out;
	nfs4_init_sequence(&calldata->arg.seq_args, &calldata->res.seq_res, 1);
	calldata->inode = state->inode;
	calldata->state = state;
	calldata->arg.fh = NFS_FH(state->inode);
	/* Serialization for the sequence id */
	alloc_seqid = server->nfs_client->cl_mvops->alloc_seqid;
	calldata->arg.seqid = alloc_seqid(&state->owner->so_seqid, gfp_mask);
	if (IS_ERR(calldata->arg.seqid))
		goto out_free_calldata;
	nfs_fattr_init(&calldata->fattr);
	calldata->arg.fmode = 0;
	calldata->lr.arg.ld_private = &calldata->lr.ld_private;
	calldata->res.fattr = &calldata->fattr;
	calldata->res.seqid = calldata->arg.seqid;
	calldata->res.server = server;
	calldata->res.lr_ret = -NFS4ERR_NOMATCHING_LAYOUT;
	calldata->lr.roc = pnfs_roc(state->inode,
			&calldata->lr.arg, &calldata->lr.res, msg.rpc_cred);
	if (calldata->lr.roc) {
		calldata->arg.lr_args = &calldata->lr.arg;
		calldata->res.lr_res = &calldata->lr.res;
	}
	nfs_sb_active(calldata->inode->i_sb);

	msg.rpc_argp = &calldata->arg;
	msg.rpc_resp = &calldata->res;
	task_setup_data.callback_data = calldata;
	task = rpc_run_task(&task_setup_data);
	if (IS_ERR(task))
		return PTR_ERR(task);
	status = 0;
	if (wait)
		status = rpc_wait_for_completion_task(task);
	rpc_put_task(task);
	return status;
out_free_calldata:
	kfree(calldata);
out:
	nfs4_put_open_state(state);
	nfs4_put_state_owner(sp);
	return status;
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 462 93.90% 23 79.31%
weston andros adamson weston andros adamson 17 3.46% 1 3.45%
al viro al viro 5 1.02% 1 3.45%
fred isaman fred isaman 5 1.02% 1 3.45%
andy adamson andy adamson 1 0.20% 1 3.45%
jan blunck jan blunck 1 0.20% 1 3.45%
chuck lever chuck lever 1 0.20% 1 3.45%
Total 492 100.00% 29 100.00%


static struct inode *

nfs4_atomic_open(struct inode *dir, struct nfs_open_context *ctx,
		int open_flags, struct iattr *attr, int *opened)
{
	struct nfs4_state *state;
	struct nfs4_label l = {0, 0, 0, NULL}, *label = NULL;

	label = nfs4_label_init_security(dir, ctx->dentry, attr, &l);

	/* Protect against concurrent sillydeletes */
	state = nfs4_do_open(dir, ctx, open_flags, attr, label, opened);

	nfs4_label_release_security(label);

	if (IS_ERR(state))
		return ERR_CAST(state);
	return state->inode;
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 79 71.17% 11 78.57%
david quigley david quigley 31 27.93% 2 14.29%
al viro al viro 1 0.90% 1 7.14%
Total 111 100.00% 14 100.00%



static void nfs4_close_context(struct nfs_open_context *ctx, int is_sync)
{
	if (ctx->state == NULL)
		return;
	if (is_sync)
		nfs4_close_sync(ctx->state, ctx->mode);
	else
		nfs4_close_state(ctx->state, ctx->mode);
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 50 100.00% 2 100.00%
Total 50 100.00% 2 100.00%


#define FATTR4_WORD1_NFS40_MASK (2*FATTR4_WORD1_MOUNTED_ON_FILEID - 1UL)

#define FATTR4_WORD2_NFS41_MASK (2*FATTR4_WORD2_SUPPATTR_EXCLCREAT - 1UL)

#define FATTR4_WORD2_NFS42_MASK (2*FATTR4_WORD2_MODE_UMASK - 1UL)



static int _nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle)
{
	u32 bitmask[3] = {}, minorversion = server->nfs_client->cl_minorversion;
	struct nfs4_server_caps_arg args = {
		.fhandle = fhandle,
		.bitmask = bitmask,
        };
	struct nfs4_server_caps_res res = {};
	struct rpc_message msg = {
		.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SERVER_CAPS],
		.rpc_argp = &args,
		.rpc_resp = &res,
        };
	int status;

	bitmask[0] = FATTR4_WORD0_SUPPORTED_ATTRS |
		     FATTR4_WORD0_FH_EXPIRE_TYPE |
		     FATTR4_WORD0_LINK_SUPPORT |
		     FATTR4_WORD0_SYMLINK_SUPPORT |
		     FATTR4_WORD0_ACLSUPPORT;
	if (minorversion)
		bitmask[2] = FATTR4_WORD2_SUPPATTR_EXCLCREAT;

	status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0);
	if (status == 0) {
		/* Sanity check the server answers */
		switch (minorversion) {
		case 0:
			res.attr_bitmask[1] &= FATTR4_WORD1_NFS40_MASK;
			res.attr_bitmask[2] = 0;
			break;
		case 1:
			res.attr_bitmask[2] &= FATTR4_WORD2_NFS41_MASK;
			break;
		case 2:
			res.attr_bitmask[2] &= FATTR4_WORD2_NFS42_MASK;
		}
		memcpy(server->attr_bitmask, res.attr_bitmask, sizeof(server->attr_bitmask));
		server->caps &= ~(NFS_CAP_ACLS|NFS_CAP_HARDLINKS|
				NFS_CAP_SYMLINKS|NFS_CAP_FILEID|
				NFS_CAP_MODE|NFS_CAP_NLINK|NFS_CAP_OWNER|
				NFS_CAP_OWNER_GROUP|NFS_CAP_ATIME|
				NFS_CAP_CTIME|NFS_CAP_MTIME|
				NFS_CAP_SECURITY_LABEL);
		if (res.attr_bitmask[0] & FATTR4_WORD0_ACL &&
				res.acl_bitmask & ACL4_SUPPORT_ALLOW_ACL)
			server->caps |= NFS_CAP_ACLS;
		if (res.has_links != 0)
			server->caps |= NFS_CAP_HARDLINKS;
		if (res.has_symlinks != 0)
			server->caps |= NFS_CAP_SYMLINKS;
		if (res.attr_bitmask[0] & FATTR4_WORD0_FILEID)
			server->caps |= NFS_CAP_FILEID;
		if (res.attr_bitmask[1] & FATTR4_WORD1_MODE)
			server->caps |= NFS_CAP_MODE;
		if (res.attr_bitmask[1] & FATTR4_WORD1_NUMLINKS)
			server->caps |= NFS_CAP_NLINK;
		if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER)
			server->caps |= NFS_CAP_OWNER;
		if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER_GROUP)
			server->caps |= NFS_CAP_OWNER_GROUP;
		if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_ACCESS)
			server->caps |= NFS_CAP_ATIME;
		if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_METADATA)
			server->caps |= NFS_CAP_CTIME;
		if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_MODIFY)
			server->caps |= NFS_CAP_MTIME;
#ifdef CONFIG_NFS_V4_SECURITY_LABEL
		if (res.attr_bitmask[2] & FATTR4_WORD2_SECURITY_LABEL)
			server->caps |= NFS_CAP_SECURITY_LABEL;
#endif
		memcpy(server->attr_bitmask_nl, res.attr_bitmask,
				sizeof(server->attr_bitmask));
		server->attr_bitmask_nl[2] &= ~FATTR4_WORD2_SECURITY_LABEL;

		memcpy(server->cache_consistency_bitmask, res.attr_bitmask, sizeof(server->cache_consistency_bitmask));
		server->cache_consistency_bitmask[0] &= FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE;
		server->cache_consistency_bitmask[1] &= FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY;
		server->cache_consistency_bitmask[2] = 0;
		memcpy(server->exclcreat_bitmask, res.exclcreat_bitmask,
			sizeof(server->exclcreat_bitmask));
		server->acl_bitmask = res.acl_bitmask;
		server->fh_expire_type = res.fh_expire_type;
	}

	return status;
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 412 72.28% 9 52.94%
kinglong mee kinglong mee 66 11.58% 1 5.88%
david quigley david quigley 50 8.77% 1 5.88%
benny halevy benny halevy 13 2.28% 1 5.88%
chuck lever chuck lever 8 1.40% 1 5.88%
bryan schumaker bryan schumaker 8 1.40% 2 11.76%
andy adamson andy adamson 7 1.23% 1 5.88%
malahal naineni malahal naineni 6 1.05% 1 5.88%
Total 570 100.00% 17 100.00%



int nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle)
{
	struct nfs4_exception exception = { };
	int err;
	do {
		err = nfs4_handle_exception(server,
				_nfs4_server_capabilities(server, fhandle),
				&exception);
	} while (exception.retry);
	return err;
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 53 98.15% 7 87.50%
neil brown neil brown 1 1.85% 1 12.50%
Total 54 100.00% 8 100.00%



static int _nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle,
		struct nfs_fsinfo *info)
{
	u32 bitmask[3];
	struct nfs4_lookup_root_arg args = {
		.bitmask = bitmask,
        };
	struct nfs4_lookup_res res = {
		.server = server,
		.fattr = info->fattr,
		.fh = fhandle,
        };
	struct rpc_message msg = {
		.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP_ROOT],
		.rpc_argp = &args,
		.rpc_resp = &res,
        };

	bitmask[0] = nfs4_fattr_bitmap[0];
	bitmask[1] = nfs4_fattr_bitmap[1];
	/*
         * Process the label in the upcoming getfattr
         */
	bitmask[2] = nfs4_fattr_bitmap[2] & ~FATTR4_WORD2_SECURITY_LABEL;

	nfs_fattr_init(info->fattr);
	return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0);
}

Contributors
Person Tokens Prop Commits CommitProp
david howells david howells 88 57.14% 1 14.29%
david quigley david quigley 41 26.62% 1 14.29%
trond myklebust trond myklebust 10 6.49% 2 28.57%
bryan schumaker bryan schumaker 8 5.19% 2 28.57%
andy adamson andy adamson 7 4.55% 1 14.29%
Total 154 100.00% 7 100.00%



static int nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle,
		struct nfs_fsinfo *info)
{
	struct nfs4_exception exception = { };
	int err;
	do {
		err = _nfs4_lookup_root(server, fhandle, info);
		trace_nfs4_lookup_root(server, fhandle, info->fattr, err);
		switch (err) {
		case 0:
		case -NFS4ERR_WRONGSEC:
			goto out;
		default:
			err = nfs4_handle_exception(server, err, &exception);
		}
	} while (exception.retry);
out:
	return err;
}

Contributors
Person Tokens Prop Commits CommitProp
david howells david howells 51 52.04% 1 20.00%
trond myklebust trond myklebust 25 25.51% 3 60.00%
bryan schumaker bryan schumaker 22 22.45% 1 20.00%
Total 98 100.00% 5 100.00%



static int nfs4_lookup_root_sec(struct nfs_server *server, struct nfs_fh *fhandle,
				struct nfs_fsinfo *info, rpc_authflavor_t flavor)
{
	struct rpc_auth_create_args auth_args = {
		.pseudoflavor = flavor,
        };
	struct rpc_auth *auth;
	int ret;

	auth = rpcauth_create(&auth_args, server->client);
	if (IS_ERR(auth)) {
		ret = -EACCES;
		goto out;
	}
	ret = nfs4_lookup_root(server, fhandle, info);
out:
	return ret;
}

Contributors
Person Tokens Prop Commits CommitProp
bryan schumaker bryan schumaker 71 80.68% 1 25.00%
trond myklebust trond myklebust 13 14.77% 1 25.00%
wei yongjun wei yongjun 3 3.41% 1 25.00%
chuck lever chuck lever 1 1.14% 1 25.00%
Total 88 100.00% 4 100.00%

/*
 * Retry pseudoroot lookup with various security flavors.  We do this when:
 *
 *   NFSv4.0: the PUTROOTFH operation returns NFS4ERR_WRONGSEC
 *   NFSv4.1: the server does not support the SECINFO_NO_NAME operation
 *
 * Returns zero on success, or a negative NFS4ERR value, or a
 * negative errno value.
 */


static int nfs4_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle,
			      struct nfs_fsinfo *info)
{
	/* Per 3530bis 15.33.5 */
	static const rpc_authflavor_t flav_array[] = {
		RPC_AUTH_GSS_KRB5P,
		RPC_AUTH_GSS_KRB5I,
		RPC_AUTH_GSS_KRB5,
		RPC_AUTH_UNIX,			/* courtesy */
		RPC_AUTH_NULL,
        };
	int status = -EPERM;
	size_t i;

	if (server->auth_info.flavor_len > 0) {
		/* try each flavor specified by user */
		for (i = 0; i < server->auth_info.flavor_len; i++) {
			status = nfs4_lookup_root_sec(server, fhandle, info,
						server->auth_info.flavors[i]);
			if (status == -NFS4ERR_WRONGSEC || status == -EACCES)
				continue;
			break;
		}
	} else {
		/* no flavors specified by user, try default list */
		for (i = 0; i < ARRAY_SIZE(flav_array); i++) {
			status = nfs4_lookup_root_sec(server, fhandle, info,
						      flav_array[i]);
			if (status == -NFS4ERR_WRONGSEC || status == -EACCES)
				continue;
			break;
		}
	}

	/*
         * -EACCESS could mean that the user doesn't have correct permissions
         * to access the mount.  It could also mean that we tried to mount
         * with a gss auth flavor, but rpc.gssd isn't running.  Either way,
         * existing mount programs don't handle -EACCES very well so it should
         * be mapped to -EPERM instead.
         */
	if (status == -EACCES)
		status = -EPERM;
	return status;
}

Contributors
Person Tokens Prop Commits CommitProp
weston andros adamson weston andros adamson 70 38.04% 1 7.69%
bryan schumaker bryan schumaker 50 27.17% 5 38.46%
trond myklebust trond myklebust 32 17.39% 4 30.77%
chuck lever chuck lever 28 15.22% 2 15.38%
manoj naik manoj naik 4 2.17% 1 7.69%
Total 184 100.00% 13 100.00%

/**
 * nfs4_proc_get_rootfh - get file handle for server's pseudoroot
 * @server: initialized nfs_server handle
 * @fhandle: we fill in the pseudo-fs root file handle
 * @info: we fill in an FSINFO struct
 * @auth_probe: probe the auth flavours
 *
 * Returns zero on success, or a negative errno.
 */


int nfs4_proc_get_rootfh(struct nfs_server *server, struct nfs_fh *fhandle,
			 struct nfs_fsinfo *info,
			 bool auth_probe)
{
	int status = 0;

	if (!auth_probe)
		status = nfs4_lookup_root(server, fhandle, info);

	if (auth_probe || status == NFS4ERR_WRONGSEC)
		status = server->nfs_client->cl_mvops->find_root_sec(server,
				fhandle, info);

	if (status == 0)
		status = nfs4_server_capabilities(server, fhandle);
	if (status == 0)
		status = nfs4_do_fsinfo(server, fhandle, info);

	return nfs4_map_errors(status);
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 40 37.38% 4 36.36%
bryan schumaker bryan schumaker 30 28.04% 4 36.36%
chuck lever chuck lever 23 21.50% 1 9.09%
andre przywara andre przywara 7 6.54% 1 9.09%
manoj naik manoj naik 7 6.54% 1 9.09%
Total 107 100.00% 11 100.00%



static int nfs4_proc_get_root(struct nfs_server *server, struct nfs_fh *mntfh,
			      struct nfs_fsinfo *info)
{
	int error;
	struct nfs_fattr *fattr = info->fattr;
	struct nfs4_label *label = NULL;

	error = nfs4_server_capabilities(server, mntfh);
	if (error < 0) {
		dprintk("nfs4_get_root: getcaps error = %d\n", -error);
		return error;
	}

	label = nfs4_label_alloc(server, GFP_KERNEL);
	if (IS_ERR(label))
		return PTR_ERR(label);

	error = nfs4_proc_getattr(server, mntfh, fattr, label);
	if (error < 0) {
		dprintk("nfs4_get_root: getattr error = %d\n", -error);
		goto err_free_label;
	}

	if (fattr->valid & NFS_ATTR_FATTR_FSID &&
	    !nfs_fsid_equal(&server->fsid, &fattr->fsid))
		memcpy(&server->fsid, &fattr->fsid, sizeof(server->fsid));

err_free_label:
	nfs4_label_free(label);

	return error;
}

Contributors
Person Tokens Prop Commits CommitProp
bryan schumaker bryan schumaker 133 76.44% 1 33.33%
david quigley david quigley 41 23.56% 2 66.67%
Total 174 100.00% 3 100.00%

/*
 * Get locations and (maybe) other attributes of a referral.
 * Note that we'll actually follow the referral later when
 * we detect fsid mismatch in inode revalidation
 */


static int nfs4_get_referral(struct rpc_clnt *client, struct inode *dir,
			     const struct qstr *name, struct nfs_fattr *fattr,
			     struct nfs_fh *fhandle)
{
	int status = -ENOMEM;
	struct page *page = NULL;
	struct nfs4_fs_locations *locations = NULL;

	page = alloc_page(GFP_KERNEL);
	if (page == NULL)
		goto out;
	locations = kmalloc(sizeof(struct nfs4_fs_locations), GFP_KERNEL);
	if (locations == NULL)
		goto out;

	status = nfs4_proc_fs_locations(client, dir, name, locations, page);
	if (status != 0)
		goto out;

	/*
         * If the fsid didn't change, this is a migration event, not a
         * referral.  Cause us to drop into the exception handler, which
         * will kick off migration recovery.
         */
	if (nfs_fsid_equal(&NFS_SERVER(dir)->fsid, &locations->fattr.fsid)) {
		dprintk("%s: server did not return a different fsid for"
			" a referral at %s\n", __func__, name->name);
		status = -NFS4ERR_MOVED;
		goto out;
	}
	/* Fixup attributes for the nfs_lookup() call to nfs_fhget() */
	nfs_fixup_referral_attributes(&locations->fattr);

	/* replace the lookup nfs_fattr with the locations nfs_fattr */
	memcpy(fattr, &locations->fattr, sizeof(struct nfs_fattr));
	memset(fhandle, 0, sizeof(struct nfs_fh));
out:
	if (page)
		__free_page(page);
	kfree(locations);
	return status;
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 194 90.23% 4 57.14%
andy adamson andy adamson 12 5.58% 1 14.29%
bryan schumaker bryan schumaker 7 3.26% 1 14.29%
chuck lever chuck lever 2 0.93% 1 14.29%
Total 215 100.00% 7 100.00%



static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle,
				struct nfs_fattr *fattr, struct nfs4_label *label)
{
	struct nfs4_getattr_arg args = {
		.fh = fhandle,
		.bitmask = server->attr_bitmask,
        };
	struct nfs4_getattr_res res = {
		.fattr = fattr,
		.label = label,
		.server = server,
        };
	struct rpc_message msg = {
		.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETATTR],
		.rpc_argp = &args,
		.rpc_resp = &res,
        };

	args.bitmask = nfs4_bitmask(server, label);

	nfs_fattr_init(fattr);
	return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0);
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 97 72.93% 5 50.00%
david quigley david quigley 21 15.79% 2 20.00%
bryan schumaker bryan schumaker 8 6.02% 2 20.00%
andy adamson andy adamson 7 5.26% 1 10.00%
Total 133 100.00% 10 100.00%



static int nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle,
				struct nfs_fattr *fattr, struct nfs4_label *label)
{
	struct nfs4_exception exception = { };
	int err;
	do {
		err = _nfs4_proc_getattr(server, fhandle, fattr, label);
		trace_nfs4_getattr(server, fhandle, fattr, err);
		err = nfs4_handle_exception(server, err,
				&exception);
	} while (exception.retry);
	return err;
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 78 92.86% 5 83.33%
david quigley david quigley 6 7.14% 1 16.67%
Total 84 100.00% 6 100.00%

/* 
 * The file is not closed if it is opened due to the a request to change
 * the size of the file. The open call will not be needed once the
 * VFS layer lookup-intents are implemented.
 *
 * Close is called when the inode is destroyed.
 * If we haven't opened the file for O_WRONLY, we
 * need to in the size_change case to obtain a stateid.
 *
 * Got race?
 * Because OPEN is always done by name in nfsv4, it is
 * possible that we opened a different file by the same
 * name.  We can recognize this race condition, but we
 * can't do anything about it besides returning an error.
 *
 * This will be fixed with VFS changes (lookup-intent).
 */

static int

nfs4_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr,
		  struct iattr *sattr)
{
	struct inode *inode = d_inode(dentry);
	struct rpc_cred *cred = NULL;
	struct nfs_open_context *ctx = NULL;
	struct nfs4_label *label = NULL;
	int status;

	if (pnfs_ld_layoutret_on_setattr(inode) &&
	    sattr->ia_valid & ATTR_SIZE &&
	    sattr->ia_size < i_size_read(inode))
		pnfs_commit_and_return_layout(inode);

	nfs_fattr_init(fattr);
	
	/* Deal with open(O_TRUNC) */
	if (sattr->ia_valid & ATTR_OPEN)
		sattr->ia_valid &= ~(ATTR_MTIME|ATTR_CTIME);

	/* Optimization: if the end result is no change, don't RPC */
	if ((sattr->ia_valid & ~(ATTR_FILE|ATTR_OPEN)) == 0)
		return 0;

	/* Search for an existing open(O_WRITE) file */
	if (sattr->ia_valid & ATTR_FILE) {

		ctx = nfs_file_open_context(sattr->ia_file);
		if (ctx)
			cred = ctx->cred;
	}

	label = nfs4_label_alloc(NFS_SERVER(inode), GFP_KERNEL);
	if (IS_ERR(label))
		return PTR_ERR(label);

	status = nfs4_do_setattr(inode, cred, fattr, sattr, ctx, NULL, label);
	if (status == 0) {
		nfs_setattr_update_inode(inode, sattr, fattr);
		nfs_setsecurity(inode, fattr, label);
	}
	nfs4_label_free(label);
	return status;
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 111 47.03% 4 30.77%
david quigley david quigley 52 22.03% 3 23.08%
andy adamson andy adamson 39 16.53% 1 7.69%
peng tao peng tao 15 6.36% 1 7.69%
benny halevy benny halevy 11 4.66% 1 7.69%
neil brown neil brown 3 1.27% 1 7.69%
david howells david howells 3 1.27% 1 7.69%
nadav shemer nadav shemer 2 0.85% 1 7.69%
Total 236 100.00% 13 100.00%



static int _nfs4_proc_lookup(struct rpc_clnt *clnt, struct inode *dir,
		const struct qstr *name, struct nfs_fh *fhandle,
		struct nfs_fattr *fattr, struct nfs4_label *label)
{
	struct nfs_server *server = NFS_SERVER(dir);
	int		       status;
	struct nfs4_lookup_arg args = {
		.bitmask = server->attr_bitmask,
		.dir_fh = NFS_FH(dir),
		.name = name,
        };
	struct nfs4_lookup_res res = {
		.server = server,
		.fattr = fattr,
		.label = label,
		.fh = fhandle,
        };
	struct rpc_message msg = {
		.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP],
		.rpc_argp = &args,
		.rpc_resp = &res,
        };

	args.bitmask = nfs4_bitmask(server, label);

	nfs_fattr_init(fattr);

	dprintk("NFS call  lookup %s\n", name->name);
	status = nfs4_call_sync(clnt, server, &msg, &args.seq_args, &res.seq_res, 0);
	dprintk("NFS reply lookup: %d\n", status);
	return status;
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 149 79.26% 7 58.33%
david quigley david quigley 21 11.17% 2 16.67%
bryan schumaker bryan schumaker 11 5.85% 2 16.67%
andy adamson andy adamson 7 3.72% 1 8.33%
Total 188 100.00% 12 100.00%



static void nfs_fixup_secinfo_attributes(struct nfs_fattr *fattr)
{
	fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE |
		NFS_ATTR_FATTR_NLINK | NFS_ATTR_FATTR_MOUNTPOINT;
	fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO;
	fattr->nlink = 2;
}

Contributors
Person Tokens Prop Commits CommitProp
bryan schumaker bryan schumaker 39 100.00% 2 100.00%
Total 39 100.00% 2 100.00%



static int nfs4_proc_lookup_common(struct rpc_clnt **clnt, struct inode *dir,
				   const struct qstr *name, struct nfs_fh *fhandle,
				   struct nfs_fattr *fattr, struct nfs4_label *label)
{
	struct nfs4_exception exception = { };
	struct rpc_clnt *client = *clnt;
	int err;
	do {
		err = _nfs4_proc_lookup(client, dir, name, fhandle, fattr, label);
		trace_nfs4_lookup(dir, name, err);
		switch (err) {
		case -NFS4ERR_BADNAME:
			err = -ENOENT;
			goto out;
		case -NFS4ERR_MOVED:
			err = nfs4_get_referral(client, dir, name, fattr, fhandle);
			if (err == -NFS4ERR_MOVED)
				err = nfs4_handle_exception(NFS_SERVER(dir), err, &exception);
			goto out;
		case -NFS4ERR_WRONGSEC:
			err = -EPERM;
			if (client != *clnt)
				goto out;
			client = nfs4_negotiate_security(client, dir, name);
			if (IS_ERR(client))
				return PTR_ERR(client);

			exception.retry = 1;
			break;
		default:
			err = nfs4_handle_exception(NFS_SERVER(dir), err, &exception);
		}
	} while (exception.retry);

out:
	if (err == 0)
		*clnt = client;
	else if (client != *clnt)
		rpc_shutdown_client(client);

	return err;
}

Contributors
Person Tokens Prop Commits CommitProp
bryan schumaker bryan schumaker 109 43.95% 4 30.77%
trond myklebust trond myklebust 108 43.55% 5 38.46%
dominique martinet dominique martinet 22 8.87% 1 7.69%
david quigley david quigley 7 2.82% 1 7.69%
al viro al viro 1 0.40% 1 7.69%
andy adamson andy adamson 1 0.40% 1 7.69%
Total 248 100.00% 13 100.00%



static int nfs4_proc_lookup(struct inode *dir, const struct qstr *name,
			    struct nfs_fh *fhandle, struct nfs_fattr *fattr,
			    struct nfs4_label *label)
{
	int status;
	struct rpc_clnt *client = NFS_CLIENT(dir);

	status = nfs4_proc_lookup_common(&client, dir, name, fhandle, fattr, label);
	if (client != NFS_CLIENT(dir)) {
		rpc_shutdown_client(client);
		nfs_fixup_secinfo_attributes(fattr);
	}
	return status;
}

Contributors
Person Tokens Prop Commits CommitProp
bryan schumaker bryan schumaker 79 90.80% 1 33.33%
david quigley david quigley 7 8.05% 1 33.33%
al viro al viro 1 1.15% 1 33.33%
Total 87 100.00% 3 100.00%


struct rpc_clnt *

nfs4_proc_lookup_mountpoint(struct inode *dir, const struct qstr *name,
			    struct nfs_fh *fhandle, struct nfs_fattr *fattr)
{
	struct rpc_clnt *client = NFS_CLIENT(dir);
	int status;

	status = nfs4_proc_lookup_common(&client, dir, name, fhandle, fattr, NULL);
	if (status < 0)
		return ERR_PTR(status);
	return (client == NFS_CLIENT(dir)) ? rpc_clone_client(client) : client;
}

Contributors
Person Tokens Prop Commits CommitProp
bryan schumaker bryan schumaker 68 77.27% 1 25.00%
trond myklebust trond myklebust 17 19.32% 1 25.00%
david quigley david quigley 2 2.27% 1 25.00%
al viro al viro 1 1.14% 1 25.00%
Total 88 100.00% 4 100.00%



static int _nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry)
{
	struct nfs_server *server = NFS_SERVER(inode);
	struct nfs4_accessargs args = {
		.fh = NFS_FH(inode),
		.bitmask = server->cache_consistency_bitmask,
        };
	struct nfs4_accessres res = {
		.server = server,
        };
	struct rpc_message msg = {
		.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_ACCESS],
		.rpc_argp = &args,
		.rpc_resp = &res,
		.rpc_cred = entry->cred,
        };
	int mode = entry->mask;
	int status = 0;

	/*
         * Determine which access bits we want to ask for...
         */
	if (mode & MAY_READ)
		args.access |= NFS4_ACCESS_READ;
	if (S_ISDIR(inode->i_mode)) {
		if (mode & MAY_WRITE)
			args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE;
		if (mode & MAY_EXEC)
			args.access |= NFS4_ACCESS_LOOKUP;
	} else {
		if (mode & MAY_WRITE)
			args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND;
		if (mode & MAY_EXEC)
			args.access |= NFS4_ACCESS_EXECUTE;
	}

	res.fattr = nfs_alloc_fattr();
	if (res.fattr == NULL)
		return -ENOMEM;

	status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0);
	if (!status) {
		nfs_access_set_mask(entry, res.access);
		nfs_refresh_inode(inode, res.fattr);
	}
	nfs_free_fattr(res.fattr);
	return status;
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 243 91.70% 7 58.33%
andy adamson andy adamson 8 3.02% 1 8.33%
bryan schumaker bryan schumaker 8 3.02% 2 16.67%
weston andros adamson weston andros adamson 4 1.51% 1 8.33%
david quigley david quigley 2 0.75% 1 8.33%
Total 265 100.00% 12 100.00%



static int nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry)
{
	struct nfs4_exception exception = { };
	int err;
	do {
		err = _nfs4_proc_access(inode, entry);
		trace_nfs4_access(inode, err);
		err = nfs4_handle_exception(NFS_SERVER(inode), err,
				&exception);
	} while (exception.retry);
	return err;
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 69 100.00% 5 100.00%
Total 69 100.00% 5 100.00%

/*
 * TODO: For the time being, we don't try to get any attributes
 * along with any of the zero-copy operations READ, READDIR,
 * READLINK, WRITE.
 *
 * In the case of the first three, we want to put the GETATTR
 * after the read-type operation -- this is because it is hard
 * to predict the length of a GETATTR response in v4, and thus
 * align the READ data correctly.  This means that the GETATTR
 * may end up partially falling into the page cache, and we should
 * shift it into the 'tail' of the xdr_buf before processing.
 * To do this efficiently, we need to know the total length
 * of data received, which doesn't seem to be available outside
 * of the RPC layer.
 *
 * In the case of WRITE, we also want to put the GETATTR after
 * the operation -- in this case because we want to make sure
 * we get the post-operation mtime and size.
 *
 * Both of these changes to the XDR layer would in fact be quite
 * minor, but I decided to leave them for a subsequent patch.
 */


static int _nfs4_proc_readlink(struct inode *inode, struct page *page,
		unsigned int pgbase, unsigned int pglen)
{
	struct nfs4_readlink args = {
		.fh       = NFS_FH(inode),
		.pgbase	  = pgbase,
		.pglen    = pglen,
		.pages    = &page,
        };
	struct nfs4_readlink_res res;
	struct rpc_message msg = {
		.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READLINK],
		.rpc_argp = &args,
		.rpc_resp = &res,
        };

	return nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), &msg, &args.seq_args, &res.seq_res, 0);
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 91 78.45% 5 55.56%
bryan schumaker bryan schumaker 11 9.48% 2 22.22%
andy adamson andy adamson 8 6.90% 1 11.11%
benny halevy benny halevy 6 5.17% 1 11.11%
Total 116 100.00% 9 100.00%



static int nfs4_proc_readlink(struct inode *inode, struct page *page,
		unsigned int pgbase, unsigned int pglen)
{
	struct nfs4_exception exception = { };
	int err;
	do {
		err = _nfs4_proc_readlink(inode, page, pgbase, pglen);
		trace_nfs4_readlink(inode, err);
		err = nfs4_handle_exception(NFS_SERVER(inode), err,
				&exception);
	} while (exception.retry);
	return err;
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 81 100.00% 5 100.00%
Total 81 100.00% 5 100.00%

/*
 * This is just for mknod.  open(O_CREAT) will always do ->open_context().
 */

static int

nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
		 int flags)
{
	struct nfs_server *server = NFS_SERVER(dir);
	struct nfs4_label l, *ilabel = NULL;
	struct nfs_open_context *ctx;
	struct nfs4_state *state;
	int status = 0;

	ctx = alloc_nfs_open_context(dentry, FMODE_READ, NULL);
	if (IS_ERR(ctx))
		return PTR_ERR(ctx);

	ilabel = nfs4_label_init_security(dir, dentry, sattr, &l);

	if (!(server->attr_bitmask[2] & FATTR4_WORD2_MODE_UMASK))
		sattr->ia_mode &= ~current_umask();
	state = nfs4_do_open(dir, ctx, flags, sattr, ilabel, NULL);
	if (IS_ERR(state)) {
		status = PTR_ERR(state);
		goto out;
	}
out:
	nfs4_label_release_security(ilabel);
	put_nfs_open_context(ctx);
	return status;
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 83 49.11% 8 47.06%
david quigley david quigley 26 15.38% 2 11.76%
andreas gruenbacher andreas gruenbacher 24 14.20% 1 5.88%
miklos szeredi miklos szeredi 23 13.61% 1 5.88%
aneesh kumar aneesh kumar 8 4.73% 1 5.88%
neil brown neil brown 2 1.18% 1 5.88%
kinglong mee kinglong mee 1 0.59% 1 5.88%
al viro al viro 1 0.59% 1 5.88%
andy adamson andy adamson 1 0.59% 1 5.88%
Total 169 100.00% 17 100.00%



static int _nfs4_proc_remove(struct inode *dir, const struct qstr *name)
{
	struct nfs_server *server = NFS_SERVER(dir);
	struct nfs_removeargs args = {
		.fh = NFS_FH(dir),
		.name = *name,
        };
	struct nfs_removeres res = {
		.server = server,
        };
	struct rpc_message msg = {
		.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE],
		.rpc_argp = &args,
		.rpc_resp = &res,
        };
	unsigned long timestamp = jiffies;
	int status;

	status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 1);
	if (status == 0)
		update_changeattr(dir, &res.cinfo, timestamp);
	return status;
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 123 87.23% 5 50.00%
bryan schumaker bryan schumaker 8 5.67% 2 20.00%
andy adamson andy adamson 8 5.67% 1 10.00%
al viro al viro 1 0.71% 1 10.00%
linus torvalds linus torvalds 1 0.71% 1 10.00%
Total 141 100.00% 10 100.00%



static int nfs4_proc_remove(struct inode *dir, const struct qstr *name)
{
	struct nfs4_exception exception = { };
	int err;
	do {
		err = _nfs4_proc_remove(dir, name);
		trace_nfs4_remove(dir, name, err);
		err = nfs4_handle_exception(NFS_SERVER(dir), err,
				&exception);
	} while (exception.retry);
	return err;
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 71 98.61% 4 80.00%
al viro al viro 1 1.39% 1 20.00%
Total 72 100.00% 5 100.00%



static void nfs4_proc_unlink_setup(struct rpc_message *msg, struct inode *dir)
{
	struct nfs_server *server = NFS_SERVER(dir);
	struct nfs_removeargs *args = msg->rpc_argp;
	struct nfs_removeres *res = msg->rpc_resp;

	res->server = server;
	msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE];
	nfs4_init_sequence(&args->seq_args, &res->seq_res, 1);

	nfs_fattr_init(res->dir_attr);
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 72 87.80% 6 66.67%
david quigley david quigley 7 8.54% 1 11.11%
andy adamson andy adamson 2 2.44% 1 11.11%
chuck lever chuck lever 1 1.22% 1 11.11%
Total 82 100.00% 9 100.00%



static void nfs4_proc_unlink_rpc_prepare(struct rpc_task *task, struct nfs_unlinkdata *data)
{
	nfs4_setup_sequence(NFS_SB(data->dentry->d_sb),
			&data->args.seq_args,
			&data->res.seq_res,
			task);
}

Contributors
Person Tokens Prop Commits CommitProp
bryan schumaker bryan schumaker 22 50.00% 1 33.33%
jeff layton jeff layton 18 40.91% 1 33.33%
al viro al viro 4 9.09% 1 33.33%
Total 44 100.00% 3 100.00%



static int nfs4_proc_unlink_done(struct rpc_task *task, struct inode *dir)
{
	struct nfs_unlinkdata *data = task->tk_calldata;
	struct nfs_removeres *res = &data->res;

	if (!nfs4_sequence_done(task, &res->seq_res))
		return 0;
	if (nfs4_async_handle_error(task, res->server, NULL,
				    &data->timeout) == -EAGAIN)
		return 0;
	if (task->tk_status == 0)
		update_changeattr(dir, &res->cinfo, res->dir_attr->time_start);
	return 1;
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 65 63.73% 8 72.73%
jeff layton jeff layton 24 23.53% 1 9.09%
andy adamson andy adamson 8 7.84% 1 9.09%
neil brown neil brown 5 4.90% 1 9.09%
Total 102 100.00% 11 100.00%



static void nfs4_proc_rename_setup(struct rpc_message *msg, struct inode *dir)
{
	struct nfs_server *server = NFS_SERVER(dir);
	struct nfs_renameargs *arg = msg->rpc_argp;
	struct nfs_renameres *res = msg->rpc_resp;

	msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME];
	res->server = server;
	nfs4_init_sequence(&arg->seq_args, &res->seq_res, 1);
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 41 54.67% 5 41.67%
jeff layton jeff layton 22 29.33% 3 25.00%
andy adamson andy adamson 7 9.33% 1 8.33%
bryan schumaker bryan schumaker 4 5.33% 2 16.67%
chuck lever chuck lever 1 1.33% 1 8.33%
Total 75 100.00% 12 100.00%



static void nfs4_proc_rename_rpc_prepare(struct rpc_task *task, struct nfs_renamedata *data)
{
	nfs4_setup_sequence(NFS_SERVER(data->old_dir),
			&data->args.seq_args,
			&data->res.seq_res,
			task);
}

Contributors
Person Tokens Prop Commits CommitProp
bryan schumaker bryan schumaker 29 69.05% 1 33.33%
trond myklebust trond myklebust 12 28.57% 1 33.33%
chuck lever chuck lever 1 2.38% 1 33.33%
Total 42 100.00% 3 100.00%



static int nfs4_proc_rename_done(struct rpc_task *task, struct inode *old_dir,
				 struct inode *new_dir)
{
	struct nfs_renamedata *data = task->tk_calldata;
	struct nfs_renameres *res = &data->res;

	if (!nfs4_sequence_done(task, &res->seq_res))
		return 0;
	if (nfs4_async_handle_error(task, res->server, NULL, &data->timeout) == -EAGAIN)
		return 0;

	if (task->tk_status == 0) {
		update_changeattr(old_dir, &res->old_cinfo, res->old_fattr->time_start);
		if (new_dir != old_dir)
			update_changeattr(new_dir, &res->new_cinfo, res->new_fattr->time_start);
	}
	return 1;
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 75 57.25% 6 75.00%
jeff layton jeff layton 51 38.93% 1 12.50%
neil brown neil brown 5 3.82% 1 12.50%
Total 131 100.00% 8 100.00%



static int _nfs4_proc_link(struct inode *inode, struct inode *dir, const struct qstr *name)
{
	struct nfs_server *server = NFS_SERVER(inode);
	struct nfs4_link_arg arg = {
		.fh     = NFS_FH(inode),
		.dir_fh = NFS_FH(dir),
		.name   = name,
		.bitmask = server->attr_bitmask,
        };
	struct nfs4_link_res res = {
		.server = server,
		.label = NULL,
        };
	struct rpc_message msg = {
		.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LINK],
		.rpc_argp = &arg,
		.rpc_resp = &res,
        };
	int status = -ENOMEM;

	res.fattr = nfs_alloc_fattr();
	if (res.fattr == NULL)
		goto out;

	res.label = nfs4_label_alloc(server, GFP_KERNEL);
	if (IS_ERR(res.label)) {
		status = PTR_ERR(res.label);
		goto out;
	}
	arg.bitmask = nfs4_bitmask(server, res.label);

	status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1);
	if (!status) {
		update_changeattr(dir, &res.cinfo, res.fattr->time_start);
		status = nfs_post_op_update_inode(inode, res.fattr);
		if (!status)
			nfs_setsecurity(inode, res.fattr, res.label);
	}


	nfs4_label_free(res.label);

out:
	nfs_free_fattr(res.fattr);
	return status;
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 181 65.34% 10 58.82%
david quigley david quigley 79 28.52% 3 17.65%
andy adamson andy adamson 8 2.89% 1 5.88%
bryan schumaker bryan schumaker 8 2.89% 2 11.76%
al viro al viro 1 0.36% 1 5.88%
Total 277 100.00% 17 100.00%



static int nfs4_proc_link(struct inode *inode, struct inode *dir, const struct qstr *name)
{
	struct nfs4_exception exception = { };
	int err;
	do {
		err = nfs4_handle_exception(NFS_SERVER(inode),
				_nfs4_proc_link(inode, dir, name),
				&exception);
	} while (exception.retry);
	return err;
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 65 98.48% 4 80.00%
al viro al viro 1 1.52% 1 20.00%
Total 66 100.00% 5 100.00%


struct nfs4_createdata {
	
struct rpc_message msg;
	
struct nfs4_create_arg arg;
	
struct nfs4_create_res res;
	
struct nfs_fh fh;
	
struct nfs_fattr fattr;
	
struct nfs4_label *label;
};



static struct nfs4_createdata *nfs4_alloc_createdata(struct inode *dir,
		const struct qstr *name, struct iattr *sattr, u32 ftype)
{
	struct nfs4_createdata *data;

	data = kzalloc(sizeof(*data), GFP_KERNEL);
	if (data != NULL) {
		struct nfs_server *server = NFS_SERVER(dir);

		data->label = nfs4_label_alloc(server, GFP_KERNEL);
		if (IS_ERR(data->label))
			goto out_free;

		data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE];
		data->msg.rpc_argp = &data->arg;
		data->msg.rpc_resp = &data->res;
		data->arg.dir_fh = NFS_FH(dir);
		data->arg.server = server;
		data->arg.name = name;
		data->arg.attrs = sattr;
		data->arg.ftype = ftype;
		data->arg.bitmask = nfs4_bitmask(server, data->label);
		data->arg.umask = current_umask();
		data->res.server = server;
		data->res.fh = &data->fh;
		data->res.fattr = &data->fattr;
		data->res.label = data->label;
		nfs_fattr_init(data->res.fattr);
	}
	return data;
out_free:
	kfree(data);
	return NULL;
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 190 76.31% 8 61.54%
david quigley david quigley 49 19.68% 3 23.08%
andreas gruenbacher andreas gruenbacher 9 3.61% 1 7.69%
al viro al viro 1 0.40% 1 7.69%
Total 249 100.00% 13 100.00%



static int nfs4_do_create(struct inode *dir, struct dentry *dentry, struct nfs4_createdata *data)
{
	int status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &data->msg,
				    &data->arg.seq_args, &data->res.seq_res, 1);
	if (status == 0) {
		update_changeattr(dir, &data->res.dir_cinfo,
				data->res.fattr->time_start);
		status = nfs_instantiate(dentry, data->res.fh, data->res.fattr, data->res.label);
	}
	return status;
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 86 74.14% 5 55.56%
andy adamson andy adamson 13 11.21% 1 11.11%
bryan schumaker bryan schumaker 11 9.48% 2 22.22%
david quigley david quigley 6 5.17% 1 11.11%
Total 116 100.00% 9 100.00%



static void nfs4_free_createdata(struct nfs4_createdata *data)
{
	nfs4_label_free(data->label);
	kfree(data);
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 21 91.30% 4 80.00%
david quigley david quigley 2 8.70% 1 20.00%
Total 23 100.00% 5 100.00%



static int _nfs4_proc_symlink(struct inode *dir, struct dentry *dentry,
		struct page *page, unsigned int len, struct iattr *sattr,
		struct nfs4_label *label)
{
	struct nfs4_createdata *data;
	int status = -ENAMETOOLONG;

	if (len > NFS4_MAXPATHLEN)
		goto out;

	status = -ENOMEM;
	data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4LNK);
	if (data == NULL)
		goto out;

	data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SYMLINK];
	data->arg.u.symlink.pages = &page;
	data->arg.u.symlink.len = len;
	data->arg.label = label;
	
	status = nfs4_do_create(dir, dentry, data);

	nfs4_free_createdata(data);
out:
	return status;
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 138 91.39% 8 88.89%
david quigley david quigley 13 8.61% 1 11.11%
Total 151 100.00% 9 100.00%



static int nfs4_proc_symlink(struct inode *dir, struct dentry *dentry,
		struct page *page, unsigned int len, struct iattr *sattr)
{
	struct nfs4_exception exception = { };
	struct nfs4_label l, *label = NULL;
	int err;

	label = nfs4_label_init_security(dir, dentry, sattr, &l);

	do {
		err = _nfs4_proc_symlink(dir, dentry, page, len, sattr, label);
		trace_nfs4_symlink(dir, &dentry->d_name, err);
		err = nfs4_handle_exception(NFS_SERVER(dir), err,
				&exception);
	} while (exception.retry);

	nfs4_label_release_security(label);
	return err;
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 94 75.81% 5 71.43%
david quigley david quigley 30 24.19% 2 28.57%
Total 124 100.00% 7 100.00%



static int _nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry,
		struct iattr *sattr, struct nfs4_label *label)
{
	struct nfs4_createdata *data;
	int status = -ENOMEM;

	data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4DIR);
	if (data == NULL)
		goto out;

	data->arg.label = label;
	status = nfs4_do_create(dir, dentry, data);

	nfs4_free_createdata(data);
out:
	return status;
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 78 85.71% 5 83.33%
david quigley david quigley 13 14.29% 1 16.67%
Total 91 100.00% 6 100.00%



static int nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry,
		struct iattr *sattr)
{
	struct nfs_server *server = NFS_SERVER(dir);
	struct nfs4_exception exception = { };
	struct nfs4_label l, *label = NULL;
	int err;

	label = nfs4_label_init_security(dir, dentry, sattr, &l);

	if (!(server->attr_bitmask[2] & FATTR4_WORD2_MODE_UMASK))
		sattr->ia_mode &= ~current_umask();
	do {
		err = _nfs4_proc_mkdir(dir, dentry, sattr, label);
		trace_nfs4_mkdir(dir, &dentry->d_name, err);
		err = nfs4_handle_exception(NFS_SERVER(dir), err,
				&exception);
	} while (exception.retry);
	nfs4_label_release_security(label);

	return err;
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 81 56.64% 5 55.56%
david quigley david quigley 30 20.98% 2 22.22%
andreas gruenbacher andreas gruenbacher 24 16.78% 1 11.11%
aneesh kumar aneesh kumar 8 5.59% 1 11.11%
Total 143 100.00% 9 100.00%



static int _nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred,
		u64 cookie, struct page **pages, unsigned int count, int plus)
{
	struct inode		*dir = d_inode(dentry);
	struct nfs4_readdir_arg args = {
		.fh = NFS_FH(dir),
		.pages = pages,
		.pgbase = 0,
		.count = count,
		.bitmask = NFS_SERVER(d_inode(dentry))->attr_bitmask,
		.plus = plus,
        };
	struct nfs4_readdir_res res;
	struct rpc_message msg = {
		.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READDIR],
		.rpc_argp = &args,
		.rpc_resp = &res,
		.rpc_cred = cred,
        };
	int			status;

	dprintk("%s: dentry = %pd2, cookie = %Lu\n", __func__,
			dentry,
			(unsigned long long)cookie);
	nfs4_setup_readdir(cookie, NFS_I(dir)->cookieverf, dentry, &args);
	res.pgbase = args.pgbase;
	status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &msg, &args.seq_args, &res.seq_res, 0);
	if (status >= 0) {
		memcpy(NFS_I(dir)->cookieverf, res.verifier.data, NFS4_VERIFIER_SIZE);
		status += args.pgbase;
	}

	nfs_invalidate_atime(dir);

	dprintk("%s: returns %d\n", __func__, status);
	return status;
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 216 86.40% 10 58.82%
bryan schumaker bryan schumaker 19 7.60% 4 23.53%
andy adamson andy adamson 8 3.20% 1 5.88%
david howells david howells 6 2.40% 1 5.88%
al viro al viro 1 0.40% 1 5.88%
Total 250 100.00% 17 100.00%



static int nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred,
		u64 cookie, struct page **pages, unsigned int count, int plus)
{
	struct nfs4_exception exception = { };
	int err;
	do {
		err = _nfs4_proc_readdir(dentry, cred, cookie,
				pages, count, plus);
		trace_nfs4_readdir(d_inode(dentry), err);
		err = nfs4_handle_exception(NFS_SERVER(d_inode(dentry)), err,
				&exception);
	} while (exception.retry);
	return err;
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 90 90.91% 5 71.43%
david howells david howells 6 6.06% 1 14.29%
bryan schumaker bryan schumaker 3 3.03% 1 14.29%
Total 99 100.00% 7 100.00%



static int _nfs4_proc_mknod(struct inode *dir, struct dentry *dentry,
		struct iattr *sattr, struct nfs4_label *label, dev_t rdev)
{
	struct nfs4_createdata *data;
	int mode = sattr->ia_mode;
	int status = -ENOMEM;

	data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4SOCK);
	if (data == NULL)
		goto out;

	if (S_ISFIFO(mode))
		data->arg.ftype = NF4FIFO;
	else if (S_ISBLK(mode)) {
		data->arg.ftype = NF4BLK;
		data->arg.u.device.specdata1 = MAJOR(rdev);
		data->arg.u.device.specdata2 = MINOR(rdev);
	}
	else if (S_ISCHR(mode)) {
		data->arg.ftype = NF4CHR;
		data->arg.u.device.specdata1 = MAJOR(rdev);
		data->arg.u.device.specdata2 = MINOR(rdev);
	} else if (!S_ISSOCK(mode)) {
		status = -EINVAL;
		goto out_free;
	}

	data->arg.label = label;
	status = nfs4_do_create(dir, dentry, data);
out_free:
	nfs4_free_createdata(data);
out:
	return status;
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 220 94.42% 8 88.89%
david quigley david quigley 13 5.58% 1 11.11%
Total 233 100.00% 9 100.00%



static int nfs4_proc_mknod(struct inode *dir, struct dentry *dentry,
		struct iattr *sattr, dev_t rdev)
{
	struct nfs_server *server = NFS_SERVER(dir);
	struct nfs4_exception exception = { };
	struct nfs4_label l, *label = NULL;
	int err;

	label = nfs4_label_init_security(dir, dentry, sattr, &l);

	if (!(server->attr_bitmask[2] & FATTR4_WORD2_MODE_UMASK))
		sattr->ia_mode &= ~current_umask();
	do {
		err = _nfs4_proc_mknod(dir, dentry, sattr, label, rdev);
		trace_nfs4_mknod(dir, &dentry->d_name, err);
		err = nfs4_handle_exception(NFS_SERVER(dir), err,
				&exception);
	} while (exception.retry);

	nfs4_label_release_security(label);

	return err;
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 86 58.11% 8 72.73%
david quigley david quigley 30 20.27% 1 9.09%
andreas gruenbacher andreas gruenbacher 24 16.22% 1 9.09%
aneesh kumar aneesh kumar 8 5.41% 1 9.09%
Total 148 100.00% 11 100.00%



static int _nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle,
		 struct nfs_fsstat *fsstat)
{
	struct nfs4_statfs_arg args = {
		.fh = fhandle,
		.bitmask = server->attr_bitmask,
        };
	struct nfs4_statfs_res res = {
		.fsstat = fsstat,
        };
	struct rpc_message msg = {
		.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_STATFS],
		.rpc_argp = &args,
		.rpc_resp = &res,
        };

	nfs_fattr_init(fsstat->fattr);
	return  nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0);
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 81 74.31% 4 50.00%
benny halevy benny halevy 13 11.93% 1 12.50%
bryan schumaker bryan schumaker 8 7.34% 2 25.00%
andy adamson andy adamson 7 6.42% 1 12.50%
Total 109 100.00% 8 100.00%



static int nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsstat *fsstat)
{
	struct nfs4_exception exception = { };
	int err;
	do {
		err = nfs4_handle_exception(server,
				_nfs4_proc_statfs(server, fhandle, fsstat),
				&exception);
	} while (exception.retry);
	return err;
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 62 100.00% 8 100.00%
Total 62 100.00% 8 100.00%



static int _nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle,
		struct nfs_fsinfo *fsinfo)
{
	struct nfs4_fsinfo_arg args = {
		.fh = fhandle,
		.bitmask = server->attr_bitmask,
        };
	struct nfs4_fsinfo_res res = {
		.fsinfo = fsinfo,
        };
	struct rpc_message msg = {
		.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FSINFO],
		.rpc_argp = &args,
		.rpc_resp = &res,
        };

	return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0);
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 74 72.55% 5 55.56%
benny halevy benny halevy 13 12.75% 1 11.11%
bryan schumaker bryan schumaker 8 7.84% 2 22.22%
andy adamson andy adamson 7 6.86% 1 11.11%
Total 102 100.00% 9 100.00%



static int nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo)
{
	struct nfs4_exception exception = { };
	unsigned long now = jiffies;
	int err;

	do {
		err = _nfs4_do_fsinfo(server, fhandle, fsinfo);
		trace_nfs4_fsinfo(server, fhandle, fsinfo->fattr, err);
		if (err == 0) {
			nfs4_set_lease_period(server->nfs_client,
					fsinfo->lease_time * HZ,
					now);
			break;
		}
		err = nfs4_handle_exception(server, err, &exception);
	} while (exception.retry);
	return err;
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 74 67.89% 5 83.33%
chuck lever chuck lever 35 32.11% 1 16.67%
Total 109 100.00% 6 100.00%



static int nfs4_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo)
{
	int error;

	nfs_fattr_init(fsinfo->fattr);
	error = nfs4_do_fsinfo(server, fhandle, fsinfo);
	if (error == 0) {
		/* block layout checks this! */
		server->pnfs_blksize = fsinfo->blksize;
		set_pnfs_layoutdriver(server, fhandle, fsinfo);
	}

	return error;
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 37 52.11% 6 75.00%
bryan schumaker bryan schumaker 23 32.39% 1 12.50%
peng tao peng tao 11 15.49% 1 12.50%
Total 71 100.00% 8 100.00%



static int _nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle,
		struct nfs_pathconf *pathconf)
{
	struct nfs4_pathconf_arg args = {
		.fh = fhandle,
		.bitmask = server->attr_bitmask,
        };
	struct nfs4_pathconf_res res = {
		.pathconf = pathconf,
        };
	struct rpc_message msg = {
		.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_PATHCONF],
		.rpc_argp = &args,
		.rpc_resp = &res,
        };

	/* None of the pathconf attributes are mandatory to implement */
	if ((args.bitmask[0] & nfs4_pathconf_bitmap[0]) == 0) {
		memset(pathconf, 0, sizeof(*pathconf));
		return 0;
	}

	nfs_fattr_init(pathconf->fattr);
	return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0);
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 118 80.82% 5 55.56%
benny halevy benny halevy 13 8.90% 1 11.11%
bryan schumaker bryan schumaker 8 5.48% 2 22.22%
andy adamson andy adamson 7 4.79% 1 11.11%
Total 146 100.00% 9 100.00%



static int nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle,
		struct nfs_pathconf *pathconf)
{
	struct nfs4_exception exception = { };
	int err;

	do {
		err = nfs4_handle_exception(server,
				_nfs4_proc_pathconf(server, fhandle, pathconf),
				&exception);
	} while (exception.retry);
	return err;
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 62 100.00% 4 100.00%
Total 62 100.00% 4 100.00%



int nfs4_set_rw_stateid(nfs4_stateid *stateid,
		const struct nfs_open_context *ctx,
		const struct nfs_lock_context *l_ctx,
		fmode_t fmode)
{
	return nfs4_select_rw_stateid(ctx->state, fmode, l_ctx, stateid, NULL);
}
Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 39 97.50% 3 75.00%
neil brown neil brown 1 2.50% 1 25.00%
Total 40 100.00% 4 100.00%


EXPORT_SYMBOL_GPL(nfs4_set_rw_stateid);



static bool nfs4_stateid_is_current(nfs4_stateid *stateid,
		const struct nfs_open_context *ctx,
		const struct nfs_lock_context *l_ctx,
		fmode_t fmode)
{
	nfs4_stateid current_stateid;

	/* If the current stateid represents a lost lock, then exit */
	if (nfs4_set_rw_stateid(&current_stateid, ctx, l_ctx, fmode) == -EIO)
		return true;
	return nfs4_stateid_match(stateid, &current_stateid);
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 58 100.00% 2 100.00%
Total 58 100.00% 2 100.00%



static bool nfs4_error_stateid_expired(int err)
{
	switch (err) {
	case -NFS4ERR_DELEG_REVOKED:
	case -NFS4ERR_ADMIN_REVOKED:
	case -NFS4ERR_BAD_STATEID:
	case -NFS4ERR_STALE_STATEID:
	case -NFS4ERR_OLD_STATEID:
	case -NFS4ERR_OPENMODE:
	case -NFS4ERR_EXPIRED:
		return true;
	}
	return false;
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 49 100.00% 1 100.00%
Total 49 100.00% 1 100.00%



static int nfs4_read_done_cb(struct rpc_task *task, struct nfs_pgio_header *hdr)
{
	struct nfs_server *server = NFS_SERVER(hdr->inode);

	trace_nfs4_read(hdr, task->tk_status);
	if (task->tk_status < 0) {
		struct nfs4_exception exception = {
			.inode = hdr->inode,
			.state = hdr->args.context->state,
			.stateid = &hdr->args.stateid,
                };
		task->tk_status = nfs4_async_handle_exception(task,
				server, task->tk_status, &exception);
		if (exception.retry) {
			rpc_restart_call_prepare(task);
			return -EAGAIN;
		}
	}

	if (task->tk_status > 0)
		renew_lease(server, hdr->timestamp);
	return 0;
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 127 93.38% 7 63.64%
weston andros adamson weston andros adamson 6 4.41% 1 9.09%
neil brown neil brown 1 0.74% 1 9.09%
andy adamson andy adamson 1 0.74% 1 9.09%
fred isaman fred isaman 1 0.74% 1 9.09%
Total 136 100.00% 11 100.00%



static bool nfs4_read_stateid_changed(struct rpc_task *task,
		struct nfs_pgio_args *args)
{

	if (!nfs4_error_stateid_expired(task->tk_status) ||
		nfs4_stateid_is_current(&args->stateid,
				args->context,
				args->lock_context,
				FMODE_READ))
		return false;
	rpc_restart_call_prepare(task);
	return true;
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 54 98.18% 1 50.00%
anna schumaker anna schumaker 1 1.82% 1 50.00%
Total 55 100.00% 2 100.00%



static int nfs4_read_done(struct rpc_task *task, struct nfs_pgio_header *hdr)
{

	dprintk("--> %s\n", __func__);

	if (!nfs4_sequence_done(task, &hdr->res.seq_res))
		return -EAGAIN;
	if (nfs4_read_stateid_changed(task, &hdr->args))
		return -EAGAIN;
	if (task->tk_status > 0)
		nfs_invalidate_atime(hdr->inode);
	return hdr->pgio_done_cb ? hdr->pgio_done_cb(task, hdr) :
				    nfs4_read_done_cb(task, hdr);
}

Contributors
Person Tokens Prop Commits CommitProp
andy adamson andy adamson 46 48.94% 1 16.67%
trond myklebust trond myklebust 30 31.91% 2 33.33%
weston andros adamson weston andros adamson 8 8.51% 1 16.67%
benny halevy benny halevy 8 8.51% 1 16.67%
anna schumaker anna schumaker 2 2.13% 1 16.67%
Total 94 100.00% 6 100.00%



static void nfs4_proc_read_setup(struct nfs_pgio_header *hdr,
				 struct rpc_message *msg)
{
	hdr->timestamp   = jiffies;
	if (!hdr->pgio_done_cb)
		hdr->pgio_done_cb = nfs4_read_done_cb;
	msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READ];
	nfs4_init_sequence(&hdr->args.seq_args, &hdr->res.seq_res, 0);
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 42 65.62% 3 37.50%
j. bruce fields j. bruce fields 10 15.62% 1 12.50%
weston andros adamson weston andros adamson 6 9.38% 1 12.50%
andy adamson andy adamson 4 6.25% 1 12.50%
chuck lever chuck lever 1 1.56% 1 12.50%
anna schumaker anna schumaker 1 1.56% 1 12.50%
Total 64 100.00% 8 100.00%



static int nfs4_proc_pgio_rpc_prepare(struct rpc_task *task,
				      struct nfs_pgio_header *hdr)
{
	if (nfs4_setup_sequence(NFS_SERVER(hdr->inode),
			&hdr->args.seq_args,
			&hdr->res.seq_res,
			task))
		return 0;
	if (nfs4_set_rw_stateid(&hdr->args.stateid, hdr->args.context,
				hdr->args.lock_context,
				hdr->rw_ops->rw_mode) == -EIO)
		return -EIO;
	if (unlikely(test_bit(NFS_CONTEXT_BAD, &hdr->args.context->flags)))
		return -EIO;
	return 0;
}

Contributors
Person Tokens Prop Commits CommitProp
neil brown neil brown 39 35.45% 1 14.29%
bryan schumaker bryan schumaker 32 29.09% 1 14.29%
trond myklebust trond myklebust 22 20.00% 1 14.29%
weston andros adamson weston andros adamson 10 9.09% 1 14.29%
anna schumaker anna schumaker 5 4.55% 1 14.29%
fred isaman fred isaman 1 0.91% 1 14.29%
j. bruce fields j. bruce fields 1 0.91% 1 14.29%
Total 110 100.00% 7 100.00%



static int nfs4_write_done_cb(struct rpc_task *task,
			      struct nfs_pgio_header *hdr)
{
	struct inode *inode = hdr->inode;

	trace_nfs4_write(hdr, task->tk_status);
	if (task->tk_status < 0) {
		struct nfs4_exception exception = {
			.inode = hdr->inode,
			.state = hdr->args.context->state,
			.stateid = &hdr->args.stateid,
                };
		task->tk_status = nfs4_async_handle_exception(task,
				NFS_SERVER(inode), task->tk_status,
				&exception);
		if (exception.retry) {
			rpc_restart_call_prepare(task);
			return -EAGAIN;
		}
	}
	if (task->tk_status >= 0) {
		renew_lease(NFS_SERVER(inode), hdr->timestamp);
		nfs_writeback_update_inode(hdr);
	}
	return 0;
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 113 77.40% 7 50.00%
j. bruce fields j. bruce fields 22 15.07% 2 14.29%
weston andros adamson weston andros adamson 7 4.79% 1 7.14%
fred isaman fred isaman 2 1.37% 2 14.29%
neil brown neil brown 1 0.68% 1 7.14%
andrew morton andrew morton 1 0.68% 1 7.14%
Total 146 100.00% 14 100.00%



static bool nfs4_write_stateid_changed(struct rpc_task *task,
		struct nfs_pgio_args *args)
{

	if (!nfs4_error_stateid_expired(task->tk_status) ||
		nfs4_stateid_is_current(&args->stateid,
				args->context,
				args->lock_context,
				FMODE_WRITE))
		return false;
	rpc_restart_call_prepare(task);
	return true;
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 54 98.18% 1 50.00%
anna schumaker anna schumaker 1 1.82% 1 50.00%
Total 55 100.00% 2 100.00%



static int nfs4_write_done(struct rpc_task *task, struct nfs_pgio_header *hdr)
{
	if (!nfs4_sequence_done(task, &hdr->res.seq_res))
		return -EAGAIN;
	if (nfs4_write_stateid_changed(task, &hdr->args))
		return -EAGAIN;
	return hdr->pgio_done_cb ? hdr->pgio_done_cb(task, hdr) :
		nfs4_write_done_cb(task, hdr);
}

Contributors
Person Tokens Prop Commits CommitProp
fred isaman fred isaman 39 54.17% 1 20.00%
trond myklebust trond myklebust 15 20.83% 1 20.00%
weston andros adamson weston andros adamson 8 11.11% 1 20.00%
benny halevy benny halevy 8 11.11% 1 20.00%
anna schumaker anna schumaker 2 2.78% 1 20.00%
Total 72 100.00% 5 100.00%


static

bool nfs4_write_need_cache_consistency_data(struct nfs_pgio_header *hdr)
{
	/* Don't request attributes for pNFS or O_DIRECT writes */
	if (hdr->ds_clp != NULL || hdr->dreq != NULL)
		return false;
	/* Otherwise, request attributes if and only if we don't hold
         * a delegation
         */
	return nfs4_have_delegation(hdr->inode, FMODE_READ) == 0;
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 27 64.29% 1 25.00%
fred isaman fred isaman 11 26.19% 1 25.00%
weston andros adamson weston andros adamson 3 7.14% 1 25.00%
bryan schumaker bryan schumaker 1 2.38% 1 25.00%
Total 42 100.00% 4 100.00%



static void nfs4_proc_write_setup(struct nfs_pgio_header *hdr,
				  struct rpc_message *msg)
{
	struct nfs_server *server = NFS_SERVER(hdr->inode);

	if (!nfs4_write_need_cache_consistency_data(hdr)) {
		hdr->args.bitmask = NULL;
		hdr->res.fattr = NULL;
	} else
		hdr->args.bitmask = server->cache_consistency_bitmask;

	if (!hdr->pgio_done_cb)
		hdr->pgio_done_cb = nfs4_write_done_cb;
	hdr->res.server = server;
	hdr->timestamp   = jiffies;

	msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_WRITE];
	nfs4_init_sequence(&hdr->args.seq_args, &hdr->res.seq_res, 1);
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 48 39.67% 4 36.36%
fred isaman fred isaman 30 24.79% 3 27.27%
j. bruce fields j. bruce fields 27 22.31% 1 9.09%
weston andros adamson weston andros adamson 13 10.74% 1 9.09%
anna schumaker anna schumaker 2 1.65% 1 9.09%
chuck lever chuck lever 1 0.83% 1 9.09%
Total 121 100.00% 11 100.00%



static void nfs4_proc_commit_rpc_prepare(struct rpc_task *task, struct nfs_commit_data *data)
{
	nfs4_setup_sequence(NFS_SERVER(data->inode),
			&data->args.seq_args,
			&data->res.seq_res,
			task);
}

Contributors
Person Tokens Prop Commits CommitProp
fred isaman fred isaman 21 50.00% 1 33.33%
bryan schumaker bryan schumaker 20 47.62% 1 33.33%
j. bruce fields j. bruce fields 1 2.38% 1 33.33%
Total 42 100.00% 3 100.00%



static int nfs4_commit_done_cb(struct rpc_task *task, struct nfs_commit_data *data)
{
	struct inode *inode = data->inode;

	trace_nfs4_commit(data, task->tk_status);
	if (nfs4_async_handle_error(task, NFS_SERVER(inode),
				    NULL, NULL) == -EAGAIN) {
		rpc_restart_call_prepare(task);
		return -EAGAIN;
	}
	return 0;
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 55 82.09% 5 55.56%
j. bruce fields j. bruce fields 8 11.94% 1 11.11%
fred isaman fred isaman 2 2.99% 2 22.22%
neil brown neil brown 2 2.99% 1 11.11%
Total 67 100.00% 9 100.00%



static int nfs4_commit_done(struct rpc_task *task, struct nfs_commit_data *data)
{
	if (!nfs4_sequence_done(task, &data->res.seq_res))
		return -EAGAIN;
	return data->commit_done_cb(task, data);
}

Contributors
Person Tokens Prop Commits CommitProp
fred isaman fred isaman 45 100.00% 2 100.00%
Total 45 100.00% 2 100.00%



static void nfs4_proc_commit_setup(struct nfs_commit_data *data, struct rpc_message *msg)
{
	struct nfs_server *server = NFS_SERVER(data->inode);

	if (data->commit_done_cb == NULL)
		data->commit_done_cb = nfs4_commit_done_cb;
	data->res.server = server;
	msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COMMIT];
	nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 1);
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 41 51.90% 2 28.57%
j. bruce fields j. bruce fields 22 27.85% 1 14.29%
fred isaman fred isaman 15 18.99% 3 42.86%
chuck lever chuck lever 1 1.27% 1 14.29%
Total 79 100.00% 7 100.00%


struct nfs4_renewdata {
	
struct nfs_client	*client;
	
unsigned long		timestamp;
};

/*
 * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special
 * standalone procedure for queueing an asynchronous RENEW.
 */


static void nfs4_renew_release(void *calldata)
{
	struct nfs4_renewdata *data = calldata;
	struct nfs_client *clp = data->client;

	if (atomic_read(&clp->cl_count) > 1)
		nfs4_schedule_state_renewal(clp);
	nfs_put_client(clp);
	kfree(data);
}

Contributors
Person Tokens Prop Commits CommitProp
alexandros batsakis alexandros batsakis 38 71.70% 2 66.67%
chuck lever chuck lever 15 28.30% 1 33.33%
Total 53 100.00% 3 100.00%



static void nfs4_renew_done(struct rpc_task *task, void *calldata)
{
	struct nfs4_renewdata *data = calldata;
	struct nfs_client *clp = data->client;
	unsigned long timestamp = data->timestamp;

	trace_nfs4_renew_async(clp, task->tk_status);
	switch (task->tk_status) {
	case 0:
		break;
	case -NFS4ERR_LEASE_MOVED:
		nfs4_schedule_lease_moved_recovery(clp);
		break;
	default:
		/* Unless we're shutting down, schedule state recovery! */
		if (test_bit(NFS_CS_RENEWD, &clp->cl_res_state) == 0)
			return;
		if (task->tk_status != NFS4ERR_CB_PATH_DOWN) {
			nfs4_schedule_lease_recovery(clp);
			return;
		}
		nfs4_schedule_path_down_recovery(clp);
	}
	do_renew_lease(clp, timestamp);
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 62 53.91% 6 60.00%
chuck lever chuck lever 28 24.35% 2 20.00%
j. bruce fields j. bruce fields 23 20.00% 1 10.00%
alexandros batsakis alexandros batsakis 2 1.74% 1 10.00%
Total 115 100.00% 10 100.00%


static const struct rpc_call_ops nfs4_renew_ops = {
	.rpc_call_done = nfs4_renew_done,
	.rpc_release = nfs4_renew_release,
};



static int nfs4_proc_async_renew(struct nfs_client *clp, struct rpc_cred *cred, unsigned renew_flags)
{
	struct rpc_message msg = {
		.rpc_proc	= &nfs4_procedures[NFSPROC4_CLNT_RENEW],
		.rpc_argp	= clp,
		.rpc_cred	= cred,
        };
	struct nfs4_renewdata *data;

	if (renew_flags == 0)
		return 0;
	if (!atomic_inc_not_zero(&clp->cl_count))
		return -EIO;
	data = kmalloc(sizeof(*data), GFP_NOFS);
	if (data == NULL)
		return -ENOMEM;
	data->client = clp;
	data->timestamp = jiffies;
	return rpc_call_async(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT,
			&nfs4_renew_ops, data);
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 51 40.48% 5 62.50%
chuck lever chuck lever 40 31.75% 1 12.50%
j. bruce fields j. bruce fields 20 15.87% 1 12.50%
alexandros batsakis alexandros batsakis 15 11.90% 1 12.50%
Total 126 100.00% 8 100.00%



static int nfs4_proc_renew(struct nfs_client *clp, struct rpc_cred *cred)
{
	struct rpc_message msg = {
		.rpc_proc	= &nfs4_procedures[NFSPROC4_CLNT_RENEW],
		.rpc_argp	= clp,
		.rpc_cred	= cred,
        };
	unsigned long now = jiffies;
	int status;

	status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT);
	if (status < 0)
		return status;
	do_renew_lease(clp, now);
	return 0;
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 42 50.60% 4 66.67%
j. bruce fields j. bruce fields 41 49.40% 2 33.33%
Total 83 100.00% 6 100.00%



static inline int nfs4_server_supports_acls(struct nfs_server *server)
{
	return server->caps & NFS_CAP_ACLS;
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 19 100.00% 1 100.00%
Total 19 100.00% 1 100.00%

/* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_SIZE, and that
 * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_SIZE) bytes on
 * the stack.
 */

#define NFS4ACL_MAXPAGES DIV_ROUND_UP(XATTR_SIZE_MAX, PAGE_SIZE)



static int buf_to_pages_noslab(const void *buf, size_t buflen,
		struct page **pages)
{
	struct page *newpage, **spages;
	int rc = 0;
	size_t len;
	spages = pages;

	do {
		len = min_t(size_t, PAGE_SIZE, buflen);
		newpage = alloc_page(GFP_KERNEL);

		if (newpage == NULL)
			goto unwind;
		memcpy(page_address(newpage), buf, len);
                buf += len;
                buflen -= len;
		*pages++ = newpage;
		rc++;
	} while (buflen != 0);

	return rc;

unwind:
	for(; rc > 0; rc--)
		__free_page(spages[rc-1]);
	return -ENOMEM;
}

Contributors
Person Tokens Prop Commits CommitProp
neil horman neil horman 132 97.06% 1 33.33%
jovi zhang jovi zhang 3 2.21% 1 33.33%
trond myklebust trond myklebust 1 0.74% 1 33.33%
Total 136 100.00% 3 100.00%


struct nfs4_cached_acl {
	
int cached;
	
size_t len;
	
char data[0];
};



static void nfs4_set_cached_acl(struct inode *inode, struct nfs4_cached_acl *acl)
{
	struct nfs_inode *nfsi = NFS_I(inode);

	spin_lock(&inode->i_lock);
	kfree(nfsi->nfs4_acl);
	nfsi->nfs4_acl = acl;
	spin_unlock(&inode->i_lock);
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 47 85.45% 1 50.00%
j. bruce fields j. bruce fields 8 14.55% 1 50.00%
Total 55 100.00% 2 100.00%



static void nfs4_zap_acl_attr(struct inode *inode)
{
	nfs4_set_cached_acl(inode, NULL);
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 18 100.00% 1 100.00%
Total 18 100.00% 1 100.00%



static inline ssize_t nfs4_read_cached_acl(struct inode *inode, char *buf, size_t buflen)
{
	struct nfs_inode *nfsi = NFS_I(inode);
	struct nfs4_cached_acl *acl;
	int ret = -ENOENT;

	spin_lock(&inode->i_lock);
	acl = nfsi->nfs4_acl;
	if (acl == NULL)
		goto out;
	if (buf == NULL) /* user is just asking for length */
		goto out_len;
	if (acl->cached == 0)
		goto out;
	ret = -ERANGE; /* see getxattr(2) man page */
	if (acl->len > buflen)
		goto out;
	memcpy(buf, acl->data, acl->len);
out_len:
	ret = acl->len;
out:
	spin_unlock(&inode->i_lock);
	return ret;
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 135 100.00% 2 100.00%
Total 135 100.00% 2 100.00%



static void nfs4_write_cached_acl(struct inode *inode, struct page **pages, size_t pgbase, size_t acl_len)
{
	struct nfs4_cached_acl *acl;
	size_t buflen = sizeof(*acl) + acl_len;

	if (buflen <= PAGE_SIZE) {
		acl = kmalloc(buflen, GFP_KERNEL);
		if (acl == NULL)
			goto out;
		acl->cached = 1;
		_copy_from_pages(acl->data, pages, pgbase, acl_len);
	} else {
		acl = kmalloc(sizeof(*acl), GFP_KERNEL);
		if (acl == NULL)
			goto out;
		acl->cached = 0;
	}
	acl->len = acl_len;
out:
	nfs4_set_cached_acl(inode, acl);
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 80 61.54% 3 50.00%
j. bruce fields j. bruce fields 39 30.00% 2 33.33%
sachin prabhu sachin prabhu 11 8.46% 1 16.67%
Total 130 100.00% 6 100.00%

/*
 * The getxattr API returns the required buffer length when called with a
 * NULL buf. The NFSv4 acl tool then calls getxattr again after allocating
 * the required buf.  On a NULL buf, we send a page of data to the server
 * guessing that the ACL request can be serviced by a page. If so, we cache
 * up to the page of ACL data, and the 2nd call to getxattr is serviced by
 * the cache. If not so, we throw away the page, and cache the required
 * length. The next getxattr call will then produce another round trip to
 * the server, this time with the input buf of the required size.
 */


static ssize_t __nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen)
{
	struct page *pages[NFS4ACL_MAXPAGES] = {NULL, };
	struct nfs_getaclargs args = {
		.fh = NFS_FH(inode),
		.acl_pages = pages,
		.acl_len = buflen,
        };
	struct nfs_getaclres res = {
		.acl_len = buflen,
        };
	struct rpc_message msg = {
		.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETACL],
		.rpc_argp = &args,
		.rpc_resp = &res,
        };
	unsigned int npages = DIV_ROUND_UP(buflen, PAGE_SIZE);
	int ret = -ENOMEM, i;

	/* As long as we're doing a round trip to the server anyway,
         * let's be prepared for a page of acl data. */
	if (npages == 0)
		npages = 1;
	if (npages > ARRAY_SIZE(pages))
		return -ERANGE;

	for (i = 0; i < npages; i++) {
		pages[i] = alloc_page(GFP_KERNEL);
		if (!pages[i])
			goto out_free;
	}

	/* for decoding across pages */
	res.acl_scratch = alloc_page(GFP_KERNEL);
	if (!res.acl_scratch)
		goto out_free;

	args.acl_len = npages * PAGE_SIZE;

	dprintk("%s  buf %p buflen %zu npages %d args.acl_len %zu\n",
		__func__, buf, buflen, npages, args.acl_len);
	ret = nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode),
			     &msg, &args.seq_args, &res.seq_res, 0);
	if (ret)
		goto out_free;

	/* Handle the case where the passed-in buffer is too short */
	if (res.acl_flags & NFS4_ACL_TRUNC) {
		/* Did the user only issue a request for the acl length? */
		if (buf == NULL)
			goto out_ok;
		ret = -ERANGE;
		goto out_free;
	}
	nfs4_write_cached_acl(inode, pages, res.acl_data_offset, res.acl_len);
	if (buf) {
		if (res.acl_len > buflen) {
			ret = -ERANGE;
			goto out_free;
		}
		_copy_from_pages(buf, pages, res.acl_data_offset, res.acl_len);
	}
out_ok:
	ret = res.acl_len;
out_free:
	for (i = 0; i < npages; i++)
		if (pages[i])
			__free_page(pages[i]);
	if (res.acl_scratch)
		__free_page(res.acl_scratch);
	return ret;
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 138 35.20% 5 29.41%
andy adamson andy adamson 119 30.36% 2 11.76%
j. bruce fields j. bruce fields 85 21.68% 2 11.76%
sven wegener sven wegener 20 5.10% 1 5.88%
benny halevy benny halevy 14 3.57% 1 5.88%
bryan schumaker bryan schumaker 11 2.81% 2 11.76%
sachin prabhu sachin prabhu 3 0.77% 2 11.76%
peng tao peng tao 1 0.26% 1 5.88%
chuck lever chuck lever 1 0.26% 1 5.88%
Total 392 100.00% 17 100.00%



static ssize_t nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen)
{
	struct nfs4_exception exception = { };
	ssize_t ret;
	do {
		ret = __nfs4_get_acl_uncached(inode, buf, buflen);
		trace_nfs4_get_acl(inode, ret);
		if (ret >= 0)
			break;
		ret = nfs4_handle_exception(NFS_SERVER(inode), ret, &exception);
	} while (exception.retry);
	return ret;
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 80 100.00% 3 100.00%
Total 80 100.00% 3 100.00%



static ssize_t nfs4_proc_get_acl(struct inode *inode, void *buf, size_t buflen)
{
	struct nfs_server *server = NFS_SERVER(inode);
	int ret;

	if (!nfs4_server_supports_acls(server))
		return -EOPNOTSUPP;
	ret = nfs_revalidate_inode(server, inode);
	if (ret < 0)
		return ret;
	if (NFS_I(inode)->cache_validity & NFS_INO_INVALID_ACL)
		nfs_zap_acl_cache(inode);
	ret = nfs4_read_cached_acl(inode, buf, buflen);
	if (ret != -ENOENT)
		/* -ENOENT is returned if there is no ACL or if there is an ACL
                 * but no cached acl data, just the acl length */
		return ret;
	return nfs4_get_acl_uncached(inode, buf, buflen);
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 92 84.40% 7 77.78%
aneesh kumar aneesh kumar 16 14.68% 1 11.11%
andy adamson andy adamson 1 0.92% 1 11.11%
Total 109 100.00% 9 100.00%



static int __nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen)
{
	struct nfs_server *server = NFS_SERVER(inode);
	struct page *pages[NFS4ACL_MAXPAGES];
	struct nfs_setaclargs arg = {
		.fh		= NFS_FH(inode),
		.acl_pages	= pages,
		.acl_len	= buflen,
        };
	struct nfs_setaclres res;
	struct rpc_message msg = {
		.rpc_proc	= &nfs4_procedures[NFSPROC4_CLNT_SETACL],
		.rpc_argp	= &arg,
		.rpc_resp	= &res,
        };
	unsigned int npages = DIV_ROUND_UP(buflen, PAGE_SIZE);
	int ret, i;

	if (!nfs4_server_supports_acls(server))
		return -EOPNOTSUPP;
	if (npages > ARRAY_SIZE(pages))
		return -ERANGE;
	i = buf_to_pages_noslab(buf, buflen, arg.acl_pages);
	if (i < 0)
		return i;
	nfs4_inode_return_delegation(inode);
	ret = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1);

	/*
         * Free each page after tx, so the only ref left is
         * held by the network stack
         */
	for (; i > 0; i--)
		put_page(pages[i-1]);

	/*
         * Acl update can result in inode attribute update.
         * so mark the attribute cache invalid.
         */
	spin_lock(&inode->i_lock);
	NFS_I(inode)->cache_validity |= NFS_INO_INVALID_ATTR;
	spin_unlock(&inode->i_lock);
	nfs_access_zap_cache(inode);
	nfs_zap_acl_cache(inode);
	return ret;
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 157 63.82% 7 50.00%
neil horman neil horman 39 15.85% 1 7.14%
aneesh kumar aneesh kumar 26 10.57% 1 7.14%
bryan schumaker bryan schumaker 9 3.66% 3 21.43%
andy adamson andy adamson 9 3.66% 1 7.14%
benny halevy benny halevy 6 2.44% 1 7.14%
Total 246 100.00% 14 100.00%



static int nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen)
{
	struct nfs4_exception exception = { };
	int err;
	do {
		err = __nfs4_proc_set_acl(inode, buf, buflen);
		trace_nfs4_set_acl(inode, err);
		err = nfs4_handle_exception(NFS_SERVER(inode), err,
				&exception);
	} while (exception.retry);
	return err;
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 72 97.30% 4 80.00%
matthew wilcox matthew wilcox 2 2.70% 1 20.00%
Total 74 100.00% 5 100.00%

#ifdef CONFIG_NFS_V4_SECURITY_LABEL


static int _nfs4_get_security_label(struct inode *inode, void *buf,
					size_t buflen)
{
	struct nfs_server *server = NFS_SERVER(inode);
	struct nfs_fattr fattr;
	struct nfs4_label label = {0, 0, buflen, buf};

	u32 bitmask[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL };
	struct nfs4_getattr_arg arg = {
		.fh		= NFS_FH(inode),
		.bitmask	= bitmask,
        };
	struct nfs4_getattr_res res = {
		.fattr		= &fattr,
		.label		= &label,
		.server		= server,
        };
	struct rpc_message msg = {
		.rpc_proc	= &nfs4_procedures[NFSPROC4_CLNT_GETATTR],
		.rpc_argp	= &arg,
		.rpc_resp	= &res,
        };
	int ret;

	nfs_fattr_init(&fattr);

	ret = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 0);
	if (ret)
		return ret;
	if (!(fattr.valid & NFS_ATTR_FATTR_V4_SECURITY_LABEL))
		return -ENOENT;
	if (buflen < label.len)
		return -ERANGE;
	return 0;
}

Contributors
Person Tokens Prop Commits CommitProp
david quigley david quigley 186 92.54% 1 50.00%
trond myklebust trond myklebust 15 7.46% 1 50.00%
Total 201 100.00% 2 100.00%



static int nfs4_get_security_label(struct inode *inode, void *buf,
					size_t buflen)
{
	struct nfs4_exception exception = { };
	int err;

	if (!nfs_server_capable(inode, NFS_CAP_SECURITY_LABEL))
		return -EOPNOTSUPP;

	do {
		err = _nfs4_get_security_label(inode, buf, buflen);
		trace_nfs4_get_security_label(inode, err);
		err = nfs4_handle_exception(NFS_SERVER(inode), err,
				&exception);
	} while (exception.retry);
	return err;
}

Contributors
Person Tokens Prop Commits CommitProp
david quigley david quigley 69 79.31% 1 50.00%
trond myklebust trond myklebust 18 20.69% 1 50.00%
Total 87 100.00% 2 100.00%



static int _nfs4_do_set_security_label(struct inode *inode,
		struct nfs4_label *ilabel,
		struct nfs_fattr *fattr,
		struct nfs4_label *olabel)
{

	struct iattr sattr = {0};
	struct nfs_server *server = NFS_SERVER(inode);
	const u32 bitmask[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL };
	struct nfs_setattrargs arg = {
		.fh             = NFS_FH(inode),
		.iap            = &sattr,
		.server		= server,
		.bitmask	= bitmask,
		.label		= ilabel,
        };
	struct nfs_setattrres res = {
		.fattr		= fattr,
		.label		= olabel,
		.server		= server,
        };
	struct rpc_message msg = {
		.rpc_proc       = &nfs4_procedures[NFSPROC4_CLNT_SETATTR],
		.rpc_argp       = &arg,
		.rpc_resp       = &res,
        };
	int status;

	nfs4_stateid_copy(&arg.stateid, &zero_stateid);

	status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1);
	if (status)
		dprintk("%s failed: %d\n", __func__, status);

	return status;
}

Contributors
Person Tokens Prop Commits CommitProp
david quigley david quigley 181 91.41% 1 50.00%
jeff layton jeff layton 17 8.59% 1 50.00%
Total 198 100.00% 2 100.00%



static int nfs4_do_set_security_label(struct inode *inode,
		struct nfs4_label *ilabel,
		struct nfs_fattr *fattr,
		struct nfs4_label *olabel)
{
	struct nfs4_exception exception = { };
	int err;

	do {
		err = _nfs4_do_set_security_label(inode, ilabel,
				fattr, olabel);
		trace_nfs4_set_security_label(inode, err);
		err = nfs4_handle_exception(NFS_SERVER(inode), err,
				&exception);
	} while (exception.retry);
	return err;
}

Contributors
Person Tokens Prop Commits CommitProp
david quigley david quigley 43 51.81% 1 16.67%
trond myklebust trond myklebust 38 45.78% 4 66.67%
matthew wilcox matthew wilcox 2 2.41% 1 16.67%
Total 83 100.00% 6 100.00%


static int

nfs4_set_security_label(struct inode *inode, const void *buf, size_t buflen)
{
	struct nfs4_label ilabel, *olabel = NULL;
	struct nfs_fattr fattr;
	struct rpc_cred *cred;
	int status;

	if (!nfs_server_capable(inode, NFS_CAP_SECURITY_LABEL))
		return -EOPNOTSUPP;

	nfs_fattr_init(&fattr);

	ilabel.pi = 0;
	ilabel.lfs = 0;
	ilabel.label = (char *)buf;
	ilabel.len = buflen;

	cred = rpc_lookup_cred();
	if (IS_ERR(cred))
		return PTR_ERR(cred);

	olabel = nfs4_label_alloc(NFS_SERVER(inode), GFP_KERNEL);
	if (IS_ERR(olabel)) {
		status = -PTR_ERR(olabel);
		goto out;
	}

	status = nfs4_do_set_security_label(inode, &ilabel, &fattr, olabel);
	if (status == 0)
		nfs_setsecurity(inode, &fattr, olabel);

	nfs4_label_free(olabel);
out:
	put_rpccred(cred);
	return status;
}
Contributors
Person Tokens Prop Commits CommitProp
david quigley david quigley 180 97.83% 1 25.00%
trond myklebust trond myklebust 2 1.09% 2 50.00%
al viro al viro 2 1.09% 1 25.00%
Total 184 100.00% 4 100.00%

#endif	/* CONFIG_NFS_V4_SECURITY_LABEL */




static void nfs4_init_boot_verifier(const struct nfs_client *clp,
				    nfs4_verifier *bootverf)
{
	__be32 verf[2];

	if (test_bit(NFS4CLNT_PURGE_STATE, &clp->cl_state)) {
		/* An impossible timestamp guarantees this value
                 * will never match a generated boot time. */
		verf[0] = cpu_to_be32(U32_MAX);
		verf[1] = cpu_to_be32(U32_MAX);
	} else {
		struct nfs_net *nn = net_generic(clp->cl_net, nfs_net_id);
		u64 ns = ktime_to_ns(nn->boot_time);

		verf[0] = cpu_to_be32(ns >> 32);
		verf[1] = cpu_to_be32(ns);
	}
	memcpy(bootverf->data, verf, sizeof(bootverf->data));
}

Contributors
Person Tokens Prop Commits CommitProp
chuck lever chuck lever 96 78.69% 3 60.00%
deepa dinamani deepa dinamani 19 15.57% 1 20.00%
trond myklebust trond myklebust 7 5.74% 1 20.00%
Total 122 100.00% 5 100.00%


static int

nfs4_init_nonuniform_client_string(struct nfs_client *clp)
{
	size_t len;
	char *str;

	if (clp->cl_owner_id != NULL)
		return 0;

	rcu_read_lock();
	len = 14 + strlen(clp->cl_ipaddr) + 1 +
		strlen(rpc_peeraddr2str(clp->cl_rpcclient, RPC_DISPLAY_ADDR)) +
		1 +
		strlen(rpc_peeraddr2str(clp->cl_rpcclient, RPC_DISPLAY_PROTO)) +
		1;
	rcu_read_unlock();

	if (len > NFS4_OPAQUE_LIMIT + 1)
		return -EINVAL;

	/*
         * Since this string is allocated at mount time, and held until the
         * nfs_client is destroyed, we can use GFP_KERNEL here w/o worrying
         * about a memory-reclaim deadlock.
         */
	str = kmalloc(len, GFP_KERNEL);
	if (!str)
		return -ENOMEM;

	rcu_read_lock();
	scnprintf(str, len, "Linux NFSv4.0 %s/%s %s",
			clp->cl_ipaddr,
			rpc_peeraddr2str(clp->cl_rpcclient, RPC_DISPLAY_ADDR),
			rpc_peeraddr2str(clp->cl_rpcclient, RPC_DISPLAY_PROTO));
	rcu_read_unlock();

	clp->cl_owner_id = str;
	return 0;
}

Contributors
Person Tokens Prop Commits CommitProp
jeff layton jeff layton 81 52.94% 1 25.00%
chuck lever chuck lever 49 32.03% 1 25.00%
trond myklebust trond myklebust 22 14.38% 1 25.00%
kinglong mee kinglong mee 1 0.65% 1 25.00%
Total 153 100.00% 4 100.00%


static int

nfs4_init_uniquifier_client_string(struct nfs_client *clp)
{
	size_t len;
	char *str;

	len = 10 + 10 + 1 + 10 + 1 +
		strlen(nfs4_client_id_uniquifier) + 1 +
		strlen(clp->cl_rpcclient->cl_nodename) + 1;

	if (len > NFS4_OPAQUE_LIMIT + 1)
		return -EINVAL;

	/*
         * Since this string is allocated at mount time, and held until the
         * nfs_client is destroyed, we can use GFP_KERNEL here w/o worrying
         * about a memory-reclaim deadlock.
         */
	str = kmalloc(len, GFP_KERNEL);
	if (!str)
		return -ENOMEM;

	scnprintf(str, len, "Linux NFSv%u.%u %s/%s",
			clp->rpc_ops->version, clp->cl_minorversion,
			nfs4_client_id_uniquifier,
			clp->cl_rpcclient->cl_nodename);
	clp->cl_owner_id = str;
	return 0;
}

Contributors
Person Tokens Prop Commits CommitProp
jeff layton jeff layton 68 59.13% 1 20.00%
trond myklebust trond myklebust 27 23.48% 2 40.00%
chuck lever chuck lever 20 17.39% 2 40.00%
Total 115 100.00% 5 100.00%


static int

nfs4_init_uniform_client_string(struct nfs_client *clp)
{
	size_t len;
	char *str;

	if (clp->cl_owner_id != NULL)
		return 0;

	if (nfs4_client_id_uniquifier[0] != '\0')
		return nfs4_init_uniquifier_client_string(clp);

	len = 10 + 10 + 1 + 10 + 1 +
		strlen(clp->cl_rpcclient->cl_nodename) + 1;

	if (len > NFS4_OPAQUE_LIMIT + 1)
		return -EINVAL;

	/*
         * Since this string is allocated at mount time, and held until the
         * nfs_client is destroyed, we can use GFP_KERNEL here w/o worrying
         * about a memory-reclaim deadlock.
         */
	str = kmalloc(len, GFP_KERNEL);
	if (!str)
		return -ENOMEM;

	scnprintf(str, len, "Linux NFSv%u.%u %s",
			clp->rpc_ops->version, clp->cl_minorversion,
			clp->cl_rpcclient->cl_nodename);
	clp->cl_owner_id = str;
	return 0;
}

Contributors
Person Tokens Prop Commits CommitProp
jeff layton jeff layton 107 81.06% 1 33.33%
chuck lever chuck lever 19 14.39% 1 33.33%
trond myklebust trond myklebust 6 4.55% 1 33.33%
Total 132 100.00% 3 100.00%

/*
 * nfs4_callback_up_net() starts only "tcp" and "tcp6" callback
 * services.  Advertise one based on the address family of the
 * clientaddr.
 */

static unsigned int

nfs4_init_callback_netid(const struct nfs_client *clp, char *buf, size_t len)
{
	if (strchr(clp->cl_ipaddr, ':') != NULL)
		return scnprintf(buf, len, "tcp6");
	else
		return scnprintf(buf, len, "tcp");
}

Contributors
Person Tokens Prop Commits CommitProp
chuck lever chuck lever 54 100.00% 1 100.00%
Total 54 100.00% 1 100.00%



static void nfs4_setclientid_done(struct rpc_task *task, void *calldata)
{
	struct nfs4_setclientid *sc = calldata;

	if (task->tk_status == 0)
		sc->sc_cred = get_rpccred(task->tk_rqstp->rq_cred);
}

Contributors
Person Tokens Prop Commits CommitProp
jeff layton jeff layton 43 100.00% 1 100.00%
Total 43 100.00% 1 100.00%


static const struct rpc_call_ops nfs4_setclientid_ops = {
	.rpc_call_done = nfs4_setclientid_done,
};

/**
 * nfs4_proc_setclientid - Negotiate client ID
 * @clp: state data structure
 * @program: RPC program for NFSv4 callback service
 * @port: IP port number for NFS4 callback service
 * @cred: RPC credential to use for this call
 * @res: where to place the result
 *
 * Returns zero, a negative errno, or a negative NFS4ERR status code.
 */


int nfs4_proc_setclientid(struct nfs_client *clp, u32 program,
		unsigned short port, struct rpc_cred *cred,
		struct nfs4_setclientid_res *res)
{
	nfs4_verifier sc_verifier;
	struct nfs4_setclientid setclientid = {
		.sc_verifier = &sc_verifier,
		.sc_prog = program,
		.sc_clnt = clp,
        };
	struct rpc_message msg = {
		.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID],
		.rpc_argp = &setclientid,
		.rpc_resp = res,
		.rpc_cred = cred,
        };
	struct rpc_task *task;
	struct rpc_task_setup task_setup_data = {
		.rpc_client = clp->cl_rpcclient,
		.rpc_message = &msg,
		.callback_ops = &nfs4_setclientid_ops,
		.callback_data = &setclientid,
		.flags = RPC_TASK_TIMEOUT,
        };
	int status;

	/* nfs_client_id4 */
	nfs4_init_boot_verifier(clp, &sc_verifier);

	if (test_bit(NFS_CS_MIGRATION, &clp->cl_flags))
		status = nfs4_init_uniform_client_string(clp);
	else
		status = nfs4_init_nonuniform_client_string(clp);

	if (status)
		goto out;

	/* cb_client4 */
	setclientid.sc_netid_len =
				nfs4_init_callback_netid(clp,
						setclientid.sc_netid,
						sizeof(setclientid.sc_netid));
	setclientid.sc_uaddr_len = scnprintf(setclientid.sc_uaddr,
				sizeof(setclientid.sc_uaddr), "%s.%u.%u",
				clp->cl_ipaddr, port >> 8, port & 255);

	dprintk("NFS call  setclientid auth=%s, '%s'\n",
		clp->cl_rpcclient->cl_auth->au_ops->au_name,
		clp->cl_owner_id);
	task = rpc_run_task(&task_setup_data);
	if (IS_ERR(task)) {
		status = PTR_ERR(task);
		goto out;
	}
	status = task->tk_status;
	if (setclientid.sc_cred) {
		clp->cl_acceptor = rpcauth_stringify_acceptor(setclientid.sc_cred);
		put_rpccred(setclientid.sc_cred);
	}
	rpc_put_task(task);
out:
	trace_nfs4_setclientid(clp, status);
	dprintk("NFS reply setclientid: %d\n", status);
	return status;
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 141 43.38% 6 31.58%
jeff layton jeff layton 121 37.23% 4 21.05%
chuck lever chuck lever 58 17.85% 7 36.84%
andy adamson andy adamson 4 1.23% 1 5.26%
david howells david howells 1 0.31% 1 5.26%
Total 325 100.00% 19 100.00%

/**
 * nfs4_proc_setclientid_confirm - Confirm client ID
 * @clp: state data structure
 * @res: result of a previous SETCLIENTID
 * @cred: RPC credential to use for this call
 *
 * Returns zero, a negative errno, or a negative NFS4ERR status code.
 */


int nfs4_proc_setclientid_confirm(struct nfs_client *clp,
		struct nfs4_setclientid_res *arg,
		struct rpc_cred *cred)
{
	struct rpc_message msg = {
		.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID_CONFIRM],
		.rpc_argp = arg,
		.rpc_cred = cred,
        };
	int status;

	dprintk("NFS call  setclientid_confirm auth=%s, (client ID %llx)\n",
		clp->cl_rpcclient->cl_auth->au_ops->au_name,
		clp->cl_clientid);
	status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT);
	trace_nfs4_setclientid_confirm(clp, status);
	dprintk("NFS reply setclientid_confirm: %d\n", status);
	return status;
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 71 72.45% 6 75.00%
chuck lever chuck lever 26 26.53% 1 12.50%
david howells david howells 1 1.02% 1 12.50%
Total 98 100.00% 8 100.00%


struct nfs4_delegreturndata {
	
struct nfs4_delegreturnargs args;
	
struct nfs4_delegreturnres res;
	
struct nfs_fh fh;
	
nfs4_stateid stateid;
	
unsigned long timestamp;
	struct {
		
struct nfs4_layoutreturn_args arg;
		
struct nfs4_layoutreturn_res res;
		
struct nfs4_xdr_opaque_data ld_private;
		
u32 roc_barrier;
		
bool roc;
	} 
lr;
	
struct nfs_fattr fattr;
	
int rpc_status;
	
struct inode *inode;
};



static void nfs4_delegreturn_done(struct rpc_task *task, void *calldata)
{
	struct nfs4_delegreturndata *data = calldata;

	if (!nfs4_sequence_done(task, &data->res.seq_res))
		return;

	trace_nfs4_delegreturn_exit(&data->args, &data->res, task->tk_status);

	/* Handle Layoutreturn errors */
	if (data->args.lr_args && task->tk_status != 0) {
		switch(data->res.lr_ret) {
		default:
			data->res.lr_ret = -NFS4ERR_NOMATCHING_LAYOUT;
			break;
		case 0:
			data->args.lr_args = NULL;
			data->res.lr_res = NULL;
			break;
		case -NFS4ERR_ADMIN_REVOKED:
		case -NFS4ERR_DELEG_REVOKED:
		case -NFS4ERR_EXPIRED:
		case -NFS4ERR_BAD_STATEID:
		case -NFS4ERR_OLD_STATEID:
		case -NFS4ERR_UNKNOWN_LAYOUTTYPE:
		case -NFS4ERR_WRONG_CRED:
			data->args.lr_args = NULL;
			data->res.lr_res = NULL;
			data->res.lr_ret = 0;
			rpc_restart_call_prepare(task);
			return;
		}
	}

	switch (task->tk_status) {
	case 0:
		renew_lease(data->res.server, data->timestamp);
		break;
	case -NFS4ERR_ADMIN_REVOKED:
	case -NFS4ERR_DELEG_REVOKED:
	case -NFS4ERR_EXPIRED:
		nfs4_free_revoked_stateid(data->res.server,
				data->args.stateid,
				task->tk_msg.rpc_cred);
	case -NFS4ERR_BAD_STATEID:
	case -NFS4ERR_OLD_STATEID:
	case -NFS4ERR_STALE_STATEID:
		task->tk_status = 0;
		break;
	case -NFS4ERR_ACCESS:
		if (data->args.bitmask) {
			data->args.bitmask = NULL;
			data->res.fattr = NULL;
			task->tk_status = 0;
			rpc_restart_call_prepare(task);
			return;
		}
	default:
		if (nfs4_async_handle_error(task, data->res.server,
					    NULL, NULL) == -EAGAIN) {
			rpc_restart_call_prepare(task);
			return;
		}
	}
	data->rpc_status = task->tk_status;
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 271 82.87% 11 78.57%
ricardo labiaga ricardo labiaga 45 13.76% 1 7.14%
andy adamson andy adamson 9 2.75% 1 7.14%
neil brown neil brown 2 0.61% 1 7.14%
Total 327 100.00% 14 100.00%



static void nfs4_delegreturn_release(void *calldata)
{
	struct nfs4_delegreturndata *data = calldata;
	struct inode *inode = data->inode;

	if (inode) {
		if (data->lr.roc)
			pnfs_roc_release(&data->lr.arg, &data->lr.res,
					data->res.lr_ret);
		nfs_post_op_update_inode_force_wcc(inode, &data->fattr);
		nfs_iput_and_deactive(inode);
	}
	kfree(calldata);
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 66 79.52% 5 83.33%
peng tao peng tao 17 20.48% 1 16.67%
Total 83 100.00% 6 100.00%



static void nfs4_delegreturn_prepare(struct rpc_task *task, void *data)
{
	struct nfs4_delegreturndata *d_data;

	d_data = (struct nfs4_delegreturndata *)data;

	if (!d_data->lr.roc && nfs4_wait_on_layoutreturn(d_data->inode, task))
		return;

	nfs4_setup_sequence(d_data->res.server,
			&d_data->args.seq_args,
			&d_data->res.seq_res,
			task);
}

Contributors
Person Tokens Prop Commits CommitProp
andy adamson andy adamson 54 73.97% 1 20.00%
peng tao peng tao 12 16.44% 2 40.00%
trond myklebust trond myklebust 7 9.59% 2 40.00%
Total 73 100.00% 5 100.00%


static const struct rpc_call_ops nfs4_delegreturn_ops = {
	.rpc_call_prepare = nfs4_delegreturn_prepare,
	.rpc_call_done = nfs4_delegreturn_done,
	.rpc_release = nfs4_delegreturn_release,
};



static int _nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync)
{
	struct nfs4_delegreturndata *data;
	struct nfs_server *server = NFS_SERVER(inode);
	struct rpc_task *task;
	struct rpc_message msg = {
		.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DELEGRETURN],
		.rpc_cred = cred,
        };
	struct rpc_task_setup task_setup_data = {
		.rpc_client = server->client,
		.rpc_message = &msg,
		.callback_ops = &nfs4_delegreturn_ops,
		.flags = RPC_TASK_ASYNC,
        };
	int status = 0;

	data = kzalloc(sizeof(*data), GFP_NOFS);
	if (data == NULL)
		return -ENOMEM;
	nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 1);

	nfs4_state_protect(server->nfs_client,
			NFS_SP4_MACH_CRED_CLEANUP,
			&task_setup_data.rpc_client, &msg);

	data->args.fhandle = &data->fh;
	data->args.stateid = &data->stateid;
	data->args.bitmask = server->cache_consistency_bitmask;
	nfs_copy_fh(&data->fh, NFS_FH(inode));
	nfs4_stateid_copy(&data->stateid, stateid);
	data->res.fattr = &data->fattr;
	data->res.server = server;
	data->res.lr_ret = -NFS4ERR_NOMATCHING_LAYOUT;
	data->lr.arg.ld_private = &data->lr.ld_private;
	nfs_fattr_init(data->res.fattr);
	data->timestamp = jiffies;
	data->rpc_status = 0;
	data->lr.roc = pnfs_roc(inode, &data->lr.arg, &data->lr.res, cred);
	data->inode = nfs_igrab_and_active(inode);
	if (data->inode) {
		if (data->lr.roc) {
			data->args.lr_args = &data->lr.arg;
			data->res.lr_res = &data->lr.res;
		}
	} else if (data->lr.roc) {
		pnfs_roc_release(&data->lr.arg, &data->lr.res, 0);
		data->lr.roc = false;
	}

	task_setup_data.callback_data = data;
	msg.rpc_argp = &data->args;
	msg.rpc_resp = &data->res;
	task = rpc_run_task(&task_setup_data);
	if (IS_ERR(task))
		return PTR_ERR(task);
	if (!issync)
		goto out;
	status = nfs4_wait_for_completion_rpc_task(task);
	if (status != 0)
		goto out;
	status = data->rpc_status;
out:
	rpc_put_task(task);
	return status;
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 455 94.79% 18 81.82%
andrew elble andrew elble 17 3.54% 1 4.55%
peng tao peng tao 6 1.25% 1 4.55%
chuck lever chuck lever 1 0.21% 1 4.55%
andy adamson andy adamson 1 0.21% 1 4.55%
Total 480 100.00% 22 100.00%



int nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync)
{
	struct nfs_server *server = NFS_SERVER(inode);
	struct nfs4_exception exception = { };
	int err;
	do {
		err = _nfs4_proc_delegreturn(inode, cred, stateid, issync);
		trace_nfs4_delegreturn(inode, stateid, err);
		switch (err) {
			case -NFS4ERR_STALE_STATEID:
			case -NFS4ERR_EXPIRED:
			case 0:
				return 0;
		}
		err = nfs4_handle_exception(server, err, &exception);
	} while (exception.retry);
	return err;
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 107 98.17% 3 75.00%
olga kornievskaia olga kornievskaia 2 1.83% 1 25.00%
Total 109 100.00% 4 100.00%



static int _nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request)
{
	struct inode *inode = state->inode;
	struct nfs_server *server = NFS_SERVER(inode);
	struct nfs_client *clp = server->nfs_client;
	struct nfs_lockt_args arg = {
		.fh = NFS_FH(inode),
		.fl = request,
        };
	struct nfs_lockt_res res = {
		.denied = request,
        };
	struct rpc_message msg = {
		.rpc_proc	= &nfs4_procedures[NFSPROC4_CLNT_LOCKT],
		.rpc_argp       = &arg,
		.rpc_resp       = &res,
		.rpc_cred	= state->owner->so_cred,
        };
	struct nfs4_lock_state *lsp;
	int status;

	arg.lock_owner.clientid = clp->cl_clientid;
	status = nfs4_set_lock_state(state, request);
	if (status != 0)
		goto out;
	lsp = request->fl_u.nfs4_fl.owner;
	arg.lock_owner.id = lsp->ls_seqid.owner_id;
	arg.lock_owner.s_dev = server->s_dev;
	status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1);
	switch (status) {
		case 0:
			request->fl_type = F_UNLCK;
			break;
		case -NFS4ERR_DENIED:
			status = 0;
	}
	request->fl_ops->fl_release_private(request);
	request->fl_ops = NULL;
out:
	return status;
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 224 89.24% 8 57.14%
j. bruce fields j. bruce fields 9 3.59% 1 7.14%
andy adamson andy adamson 8 3.19% 1 7.14%
bryan schumaker bryan schumaker 8 3.19% 2 14.29%
david howells david howells 2 0.80% 2 14.29%
Total 251 100.00% 14 100.00%



static int nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request)
{
	struct nfs4_exception exception = { };
	int err;

	do {
		err = _nfs4_proc_getlk(state, cmd, request);
		trace_nfs4_get_lock(request, state, cmd, err);
		err = nfs4_handle_exception(NFS_SERVER(state->inode), err,
				&exception);
	} while (exception.retry);
	return err;
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 80 100.00% 4 100.00%
Total 80 100.00% 4 100.00%


struct nfs4_unlockdata {
	
struct nfs_locku_args arg;
	
struct nfs_locku_res res;
	
struct nfs4_lock_state *lsp;
	
struct nfs_open_context *ctx;
	
struct file_lock fl;
	
struct nfs_server *server;
	
unsigned long timestamp;
};



static struct nfs4_unlockdata *nfs4_alloc_unlockdata(struct file_lock *fl,
		struct nfs_open_context *ctx,
		struct nfs4_lock_state *lsp,
		struct nfs_seqid *seqid)
{
	struct nfs4_unlockdata *p;
	struct inode *inode = lsp->ls_state->inode;

	p = kzalloc(sizeof(*p), GFP_NOFS);
	if (p == NULL)
		return NULL;
	p->arg.fh = NFS_FH(inode);
	p->arg.fl = &p->fl;
	p->arg.seqid = seqid;
	p->res.seqid = seqid;
	p->lsp = lsp;
	atomic_inc(&lsp->ls_count);
	/* Ensure we don't close file until we're done freeing locks! */
	p->ctx = get_nfs_open_context(ctx);
	memcpy(&p->fl, fl, sizeof(p->fl));
	p->server = NFS_SERVER(inode);
	return p;
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 156 99.36% 3 75.00%
andy adamson andy adamson 1 0.64% 1 25.00%
Total 157 100.00% 4 100.00%



static void nfs4_locku_release_calldata(void *data)
{
	struct nfs4_unlockdata *calldata = data;
	nfs_free_seqid(calldata->arg.seqid);
	nfs4_put_lock_state(calldata->lsp);
	put_nfs_open_context(calldata->ctx);
	kfree(calldata);
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 45 100.00% 4 100.00%
Total 45 100.00% 4 100.00%



static void nfs4_locku_done(struct rpc_task *task, void *data)
{
	struct nfs4_unlockdata *calldata = data;

	if (!nfs4_sequence_done(task, &calldata->res.seq_res))
		return;
	switch (task->tk_status) {
		case 0:
			renew_lease(calldata->server, calldata->timestamp);
			locks_lock_inode_wait(calldata->lsp->ls_state->inode, &calldata->fl);
			if (nfs4_update_lock_stateid(calldata->lsp,
					&calldata->res.stateid))
				break;
		case -NFS4ERR_ADMIN_REVOKED:
		case -NFS4ERR_EXPIRED:
			nfs4_free_revoked_stateid(calldata->server,
					&calldata->arg.stateid,
					task->tk_msg.rpc_cred);
		case -NFS4ERR_BAD_STATEID:
		case -NFS4ERR_OLD_STATEID:
		case -NFS4ERR_STALE_STATEID:
			if (!nfs4_stateid_match(&calldata->arg.stateid,
						&calldata->lsp->ls_stateid))
				rpc_restart_call_prepare(task);
			break;
		default:
			if (nfs4_async_handle_error(task, calldata->server,
						    NULL, NULL) == -EAGAIN)
				rpc_restart_call_prepare(task);
	}
	nfs_release_seqid(calldata->arg.seqid);
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 174 90.62% 13 76.47%
andy adamson andy adamson 10 5.21% 1 5.88%
jeff layton jeff layton 6 3.12% 2 11.76%
neil brown neil brown 2 1.04% 1 5.88%
Total 192 100.00% 17 100.00%



static void nfs4_locku_prepare(struct rpc_task *task, void *data)
{
	struct nfs4_unlockdata *calldata = data;

	if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0)
		goto out_wait;
	nfs4_stateid_copy(&calldata->arg.stateid, &calldata->lsp->ls_stateid);
	if (test_bit(NFS_LOCK_INITIALIZED, &calldata->lsp->ls_flags) == 0) {
		/* Note: exit _without_ running nfs4_locku_done */
		goto out_no_action;
	}
	calldata->timestamp = jiffies;
	if (nfs4_setup_sequence(calldata->server,
				&calldata->arg.seq_args,
				&calldata->res.seq_res,
				task) != 0)
		nfs_release_seqid(calldata->arg.seqid);
	return;
out_no_action:
	task->tk_action = NULL;
out_wait:
	nfs4_sequence_done(task, &calldata->res.seq_res);
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 119 82.64% 11 91.67%
andy adamson andy adamson 25 17.36% 1 8.33%
Total 144 100.00% 12 100.00%


static const struct rpc_call_ops nfs4_locku_ops = {
	.rpc_call_prepare = nfs4_locku_prepare,
	.rpc_call_done = nfs4_locku_done,
	.rpc_release = nfs4_locku_release_calldata,
};



static struct rpc_task *nfs4_do_unlck(struct file_lock *fl,
		struct nfs_open_context *ctx,
		struct nfs4_lock_state *lsp,
		struct nfs_seqid *seqid)
{
	struct nfs4_unlockdata *data;
	struct rpc_message msg = {
		.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKU],
		.rpc_cred = ctx->cred,
        };
	struct rpc_task_setup task_setup_data = {
		.rpc_client = NFS_CLIENT(lsp->ls_state->inode),
		.rpc_message = &msg,
		.callback_ops = &nfs4_locku_ops,
		.workqueue = nfsiod_workqueue,
		.flags = RPC_TASK_ASYNC,
        };

	nfs4_state_protect(NFS_SERVER(lsp->ls_state->inode)->nfs_client,
		NFS_SP4_MACH_CRED_CLEANUP, &task_setup_data.rpc_client, &msg);

	/* Ensure this is an unlock - when canceling a lock, the
         * canceled lock is passed in, and it won't be an unlock.
         */
	fl->fl_type = F_UNLCK;

	data = nfs4_alloc_unlockdata(fl, ctx, lsp, seqid);
	if (data == NULL) {
		nfs_free_seqid(seqid);
		return ERR_PTR(-ENOMEM);
	}

	nfs4_init_sequence(&data->arg.seq_args, &data->res.seq_res, 1);
	msg.rpc_argp = &data->arg;
	msg.rpc_resp = &data->res;
	task_setup_data.callback_data = data;
	return rpc_run_task(&task_setup_data);
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 177 84.69% 8 72.73%
weston andros adamson weston andros adamson 24 11.48% 1 9.09%
frank filz frank filz 7 3.35% 1 9.09%
chuck lever chuck lever 1 0.48% 1 9.09%
Total 209 100.00% 11 100.00%



static int nfs4_proc_unlck(struct nfs4_state *state, int cmd, struct file_lock *request)
{
	struct inode *inode = state->inode;
	struct nfs4_state_owner *sp = state->owner;
	struct nfs_inode *nfsi = NFS_I(inode);
	struct nfs_seqid *seqid;
	struct nfs4_lock_state *lsp;
	struct rpc_task *task;
	struct nfs_seqid *(*alloc_seqid)(struct nfs_seqid_counter *, gfp_t);
	int status = 0;
	unsigned char fl_flags = request->fl_flags;

	status = nfs4_set_lock_state(state, request);
	/* Unlock _before_ we do the RPC call */
	request->fl_flags |= FL_EXISTS;
	/* Exclude nfs_delegation_claim_locks() */
	mutex_lock(&sp->so_delegreturn_mutex);
	/* Exclude nfs4_reclaim_open_stateid() - note nesting! */
	down_read(&nfsi->rwsem);
	if (locks_lock_inode_wait(inode, request) == -ENOENT) {
		up_read(&nfsi->rwsem);
		mutex_unlock(&sp->so_delegreturn_mutex);
		goto out;
	}
	up_read(&nfsi->rwsem);
	mutex_unlock(&sp->so_delegreturn_mutex);
	if (status != 0)
		goto out;
	/* Is this a delegated lock? */
	lsp = request->fl_u.nfs4_fl.owner;
	if (test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags) == 0)
		goto out;
	alloc_seqid = NFS_SERVER(inode)->nfs_client->cl_mvops->alloc_seqid;
	seqid = alloc_seqid(&lsp->ls_seqid, GFP_KERNEL);
	status = -ENOMEM;
	if (IS_ERR(seqid))
		goto out;
	task = nfs4_do_unlck(request, nfs_file_open_context(request->fl_file), lsp, seqid);
	status = PTR_ERR(task);
	if (IS_ERR(task))
		goto out;
	status = nfs4_wait_for_completion_rpc_task(task);
	rpc_put_task(task);
out:
	request->fl_flags = fl_flags;
	trace_nfs4_unlock(request, state, F_SETLK, status);
	return status;
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 317 99.37% 17 89.47%
jeff layton jeff layton 2 0.63% 2 10.53%
Total 319 100.00% 19 100.00%


struct nfs4_lockdata {
	
struct nfs_lock_args arg;
	
struct nfs_lock_res res;
	
struct nfs4_lock_state *lsp;
	
struct nfs_open_context *ctx;
	
struct file_lock fl;
	
unsigned long timestamp;
	
int rpc_status;
	
int cancelled;
	
struct nfs_server *server;
};



static struct nfs4_lockdata *nfs4_alloc_lockdata(struct file_lock *fl,
		struct nfs_open_context *ctx, struct nfs4_lock_state *lsp,
		gfp_t gfp_mask)
{
	struct nfs4_lockdata *p;
	struct inode *inode = lsp->ls_state->inode;
	struct nfs_server *server = NFS_SERVER(inode);
	struct nfs_seqid *(*alloc_seqid)(struct nfs_seqid_counter *, gfp_t);

	p = kzalloc(sizeof(*p), gfp_mask);
	if (p == NULL)
		return NULL;

	p->arg.fh = NFS_FH(inode);
	p->arg.fl = &p->fl;
	p->arg.open_seqid = nfs_alloc_seqid(&lsp->ls_state->owner->so_seqid, gfp_mask);
	if (IS_ERR(p->arg.open_seqid))
		goto out_free;
	alloc_seqid = server->nfs_client->cl_mvops->alloc_seqid;
	p->arg.lock_seqid = alloc_seqid(&lsp->ls_seqid, gfp_mask);
	if (IS_ERR(p->arg.lock_seqid))
		goto out_free_seqid;
	p->arg.lock_owner.clientid = server->nfs_client->cl_clientid;
	p->arg.lock_owner.id = lsp->ls_seqid.owner_id;
	p->arg.lock_owner.s_dev = server->s_dev;
	p->res.lock_seqid = p->arg.lock_seqid;
	p->lsp = lsp;
	p->server = server;
	atomic_inc(&lsp->ls_count);
	p->ctx = get_nfs_open_context(ctx);
	memcpy(&p->fl, fl, sizeof(p->fl));
	return p;
out_free_seqid:
	nfs_free_seqid(p->arg.open_seqid);
out_free:
	kfree(p);
	return NULL;
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 300 97.72% 13 86.67%
andy adamson andy adamson 6 1.95% 1 6.67%
david howells david howells 1 0.33% 1 6.67%
Total 307 100.00% 15 100.00%



static void nfs4_lock_prepare(struct rpc_task *task, void *calldata)
{
	struct nfs4_lockdata *data = calldata;
	struct nfs4_state *state = data->lsp->ls_state;

	dprintk("%s: begin!\n", __func__);
	if (nfs_wait_on_sequence(data->arg.lock_seqid, task) != 0)
		goto out_wait;
	/* Do we need to do an open_to_lock_owner? */
	if (!test_bit(NFS_LOCK_INITIALIZED, &data->lsp->ls_flags)) {
		if (nfs_wait_on_sequence(data->arg.open_seqid, task) != 0) {
			goto out_release_lock_seqid;
		}
		nfs4_stateid_copy(&data->arg.open_stateid,
				&state->open_stateid);
		data->arg.new_lock_owner = 1;
		data->res.open_seqid = data->arg.open_seqid;
	} else {
		data->arg.new_lock_owner = 0;
		nfs4_stateid_copy(&data->arg.lock_stateid,
				&data->lsp->ls_stateid);
	}
	if (!nfs4_valid_open_stateid(state)) {
		data->rpc_status = -EBADF;
		task->tk_action = NULL;
		goto out_release_open_seqid;
	}
	data->timestamp = jiffies;
	if (nfs4_setup_sequence(data->server,
				&data->arg.seq_args,
				&data->res.seq_res,
				task) == 0)
		return;
out_release_open_seqid:
	nfs_release_seqid(data->arg.open_seqid);
out_release_lock_seqid:
	nfs_release_seqid(data->arg.lock_seqid);
out_wait:
	nfs4_sequence_done(task, &data->res.seq_res);
	dprintk("%s: done!, ret = %d\n", __func__, data->rpc_status);
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 236 88.72% 13 81.25%
andy adamson andy adamson 25 9.40% 1 6.25%
alexandros batsakis alexandros batsakis 3 1.13% 1 6.25%
harvey harrison harvey harrison 2 0.75% 1 6.25%
Total 266 100.00% 16 100.00%



static void nfs4_lock_done(struct rpc_task *task, void *calldata)
{
	struct nfs4_lockdata *data = calldata;
	struct nfs4_lock_state *lsp = data->lsp;

	dprintk("%s: begin!\n", __func__);

	if (!nfs4_sequence_done(task, &data->res.seq_res))
		return;

	data->rpc_status = task->tk_status;
	switch (task->tk_status) {
	case 0:
		renew_lease(NFS_SERVER(d_inode(data->ctx->dentry)),
				data->timestamp);
		if (data->arg.new_lock) {
			data->fl.fl_flags &= ~(FL_SLEEP | FL_ACCESS);
			if (locks_lock_inode_wait(lsp->ls_state->inode, &data->fl) < 0) {
				rpc_restart_call_prepare(task);
				break;
			}
		}
		if (data->arg.new_lock_owner != 0) {
			nfs_confirm_seqid(&lsp->ls_seqid, 0);
			nfs4_stateid_copy(&lsp->ls_stateid, &data->res.stateid);
			set_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags);
		} else if (!nfs4_update_lock_stateid(lsp, &data->res.stateid))
			rpc_restart_call_prepare(task);
		break;
	case -NFS4ERR_BAD_STATEID:
	case -NFS4ERR_OLD_STATEID:
	case -NFS4ERR_STALE_STATEID:
	case -NFS4ERR_EXPIRED:
		if (data->arg.new_lock_owner != 0) {
			if (!nfs4_stateid_match(&data->arg.open_stateid,
						&lsp->ls_state->open_stateid))
				rpc_restart_call_prepare(task);
		} else if (!nfs4_stateid_match(&data->arg.lock_stateid,
						&lsp->ls_stateid))
				rpc_restart_call_prepare(task);
	}
	dprintk("%s: done, ret = %d!\n", __func__, data->rpc_status);
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 279 93.62% 9 64.29%
andy adamson andy adamson 9 3.02% 1 7.14%
jeff layton jeff layton 5 1.68% 2 14.29%
david howells david howells 3 1.01% 1 7.14%
harvey harrison harvey harrison 2 0.67% 1 7.14%
Total 298 100.00% 14 100.00%



static void nfs4_lock_release(void *calldata)
{
	struct nfs4_lockdata *data = calldata;

	dprintk("%s: begin!\n", __func__);
	nfs_free_seqid(data->arg.open_seqid);
	if (data->cancelled != 0) {
		struct rpc_task *task;
		task = nfs4_do_unlck(&data->fl, data->ctx, data->lsp,
				data->arg.lock_seqid);
		if (!IS_ERR(task))
			rpc_put_task_async(task);
		dprintk("%s: cancelling lock!\n", __func__);
	} else
		nfs_free_seqid(data->arg.lock_seqid);
	nfs4_put_lock_state(data->lsp);
	put_nfs_open_context(data->ctx);
	kfree(data);
	dprintk("%s: done!\n", __func__);
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 125 97.66% 3 75.00%
harvey harrison harvey harrison 3 2.34% 1 25.00%
Total 128 100.00% 4 100.00%


static const struct rpc_call_ops nfs4_lock_ops = {
	.rpc_call_prepare = nfs4_lock_prepare,
	.rpc_call_done = nfs4_lock_done,
	.rpc_release = nfs4_lock_release,
};



static void nfs4_handle_setlk_error(struct nfs_server *server, struct nfs4_lock_state *lsp, int new_lock_owner, int error)
{
	switch (error) {
	case -NFS4ERR_ADMIN_REVOKED:
	case -NFS4ERR_EXPIRED:
	case -NFS4ERR_BAD_STATEID:
		lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED;
		if (new_lock_owner != 0 ||
		   test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags) != 0)
			nfs4_schedule_stateid_recovery(server, lsp->ls_state);
		break;
	case -NFS4ERR_STALE_STATEID:
		lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED;
		nfs4_schedule_lease_recovery(server->nfs_client);
	};
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 98 100.00% 5 100.00%
Total 98 100.00% 5 100.00%



static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *fl, int recovery_type)
{
	struct nfs4_lockdata *data;
	struct rpc_task *task;
	struct rpc_message msg = {
		.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCK],
		.rpc_cred = state->owner->so_cred,
        };
	struct rpc_task_setup task_setup_data = {
		.rpc_client = NFS_CLIENT(state->inode),
		.rpc_message = &msg,
		.callback_ops = &nfs4_lock_ops,
		.workqueue = nfsiod_workqueue,
		.flags = RPC_TASK_ASYNC,
        };
	int ret;

	dprintk("%s: begin!\n", __func__);
	data = nfs4_alloc_lockdata(fl, nfs_file_open_context(fl->fl_file),
			fl->fl_u.nfs4_fl.owner,
			recovery_type == NFS_LOCK_NEW ? GFP_KERNEL : GFP_NOFS);
	if (data == NULL)
		return -ENOMEM;
	if (IS_SETLKW(cmd))
		data->arg.block = 1;
	nfs4_init_sequence(&data->arg.seq_args, &data->res.seq_res, 1);
	msg.rpc_argp = &data->arg;
	msg.rpc_resp = &data->res;
	task_setup_data.callback_data = data;
	if (recovery_type > NFS_LOCK_NEW) {
		if (recovery_type == NFS_LOCK_RECLAIM)
			data->arg.reclaim = NFS_LOCK_RECLAIM;
		nfs4_set_sequence_privileged(&data->arg.seq_args);
	} else
		data->arg.new_lock = 1;
	task = rpc_run_task(&task_setup_data);
	if (IS_ERR(task))
		return PTR_ERR(task);
	ret = nfs4_wait_for_completion_rpc_task(task);
	if (ret == 0) {
		ret = data->rpc_status;
		if (ret)
			nfs4_handle_setlk_error(data->server, data->lsp,
					data->arg.new_lock_owner, ret);
	} else
		data->cancelled = 1;
	rpc_put_task(task);
	dprintk("%s: done, ret = %d!\n", __func__, ret);
	trace_nfs4_set_lock(fl, state, &data->res.stateid, cmd, ret);
	return ret;
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 328 93.71% 18 81.82%
olga kornievskaia olga kornievskaia 18 5.14% 1 4.55%
harvey harrison harvey harrison 2 0.57% 1 4.55%
alexandros batsakis alexandros batsakis 1 0.29% 1 4.55%
chuck lever chuck lever 1 0.29% 1 4.55%
Total 350 100.00% 22 100.00%



static int nfs4_lock_reclaim(struct nfs4_state *state, struct file_lock *request)
{
	struct nfs_server *server = NFS_SERVER(state->inode);
	struct nfs4_exception exception = {
		.inode = state->inode,
        };
	int err;

	do {
		/* Cache the lock if possible... */
		if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0)
			return 0;
		err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_RECLAIM);
		if (err != -NFS4ERR_DELAY)
			break;
		nfs4_handle_exception(server, err, &exception);
	} while (exception.retry);
	return err;
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 104 98.11% 6 75.00%
alexandros batsakis alexandros batsakis 1 0.94% 1 12.50%
linus torvalds linus torvalds 1 0.94% 1 12.50%
Total 106 100.00% 8 100.00%



static int nfs4_lock_expired(struct nfs4_state *state, struct file_lock *request)
{
	struct nfs_server *server = NFS_SERVER(state->inode);
	struct nfs4_exception exception = {
		.inode = state->inode,
        };
	int err;

	err = nfs4_set_lock_state(state, request);
	if (err != 0)
		return err;
	if (!recover_lost_locks) {
		set_bit(NFS_LOCK_LOST, &request->fl_u.nfs4_fl.owner->ls_flags);
		return 0;
	}
	do {
		if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0)
			return 0;
		err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_EXPIRED);
		switch (err) {
		default:
			goto out;
		case -NFS4ERR_GRACE:
		case -NFS4ERR_DELAY:
			nfs4_handle_exception(server, err, &exception);
			err = 0;
		}
	} while (exception.retry);
out:
	return err;
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 139 84.24% 7 77.78%
neil brown neil brown 25 15.15% 1 11.11%
alexandros batsakis alexandros batsakis 1 0.61% 1 11.11%
Total 165 100.00% 9 100.00%

#if defined(CONFIG_NFS_V4_1)


static int nfs41_lock_expired(struct nfs4_state *state, struct file_lock *request)
{
	struct nfs4_lock_state *lsp;
	int status;

	status = nfs4_set_lock_state(state, request);
	if (status != 0)
		return status;
	lsp = request->fl_u.nfs4_fl.owner;
	if (test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags) ||
	    test_bit(NFS_LOCK_LOST, &lsp->ls_flags))
		return 0;
	status = nfs4_lock_expired(state, request);
	return status;
}
Contributors
Person Tokens Prop Commits CommitProp
bryan schumaker bryan schumaker 45 50.56% 3 33.33%
trond myklebust trond myklebust 39 43.82% 4 44.44%
chuck lever chuck lever 5 5.62% 2 22.22%
Total 89 100.00% 9 100.00%

#endif



static int _nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request)
{
	struct nfs_inode *nfsi = NFS_I(state->inode);
	struct nfs4_state_owner *sp = state->owner;
	unsigned char fl_flags = request->fl_flags;
	int status;

	request->fl_flags |= FL_ACCESS;
	status = locks_lock_inode_wait(state->inode, request);
	if (status < 0)
		goto out;
	mutex_lock(&sp->so_delegreturn_mutex);
	down_read(&nfsi->rwsem);
	if (test_bit(NFS_DELEGATED_STATE, &state->flags)) {
		/* Yes: cache locks! */
		/* ...but avoid races with delegation recall... */
		request->fl_flags = fl_flags & ~FL_SLEEP;
		status = locks_lock_inode_wait(state->inode, request);
		up_read(&nfsi->rwsem);
		mutex_unlock(&sp->so_delegreturn_mutex);
		goto out;
	}
	up_read(&nfsi->rwsem);
	mutex_unlock(&sp->so_delegreturn_mutex);
	status = _nfs4_do_setlk(state, cmd, request, NFS_LOCK_NEW);
out:
	request->fl_flags = fl_flags;
	return status;
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 149 79.26% 11 78.57%
chuck lever chuck lever 33 17.55% 1 7.14%
jeff layton jeff layton 6 3.19% 2 14.29%
Total 188 100.00% 14 100.00%



static int nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request)
{
	struct nfs4_exception exception = {
		.state = state,
		.inode = state->inode,
        };
	int err;

	do {
		err = _nfs4_proc_setlk(state, cmd, request);
		if (err == -NFS4ERR_DENIED)
			err = -EAGAIN;
		err = nfs4_handle_exception(NFS_SERVER(state->inode),
				err, &exception);
	} while (exception.retry);
	return err;
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 93 100.00% 6 100.00%
Total 93 100.00% 6 100.00%


#define NFS4_LOCK_MINTIMEOUT (1 * HZ)

#define NFS4_LOCK_MAXTIMEOUT (30 * HZ)


static int

nfs4_retry_setlk_simple(struct nfs4_state *state, int cmd,
			struct file_lock *request)
{
	int		status = -ERESTARTSYS;
	unsigned long	timeout = NFS4_LOCK_MINTIMEOUT;

	while(!signalled()) {
		status = nfs4_proc_setlk(state, cmd, request);
		if ((status != -EAGAIN) || IS_SETLK(cmd))
			break;
		freezable_schedule_timeout_interruptible(timeout);
		timeout *= 2;
		timeout = min_t(unsigned long, NFS4_LOCK_MAXTIMEOUT, timeout);
		status = -ERESTARTSYS;
	}
	return status;
}

Contributors
Person Tokens Prop Commits CommitProp
jeff layton jeff layton 93 100.00% 2 100.00%
Total 93 100.00% 2 100.00%

#ifdef CONFIG_NFS_V4_1

struct nfs4_lock_waiter {
	
struct task_struct	*task;
	
struct inode		*inode;
	
struct nfs_lowner	*owner;
	
bool			notified;
};


static int

nfs4_wake_lock_waiter(wait_queue_t *wait, unsigned int mode, int flags, void *key)
{
	int ret;
	struct cb_notify_lock_args *cbnl = key;
	struct nfs4_lock_waiter	*waiter	= wait->private;
	struct nfs_lowner	*lowner = &cbnl->cbnl_owner,
				*wowner = waiter->owner;

	/* Only wake if the callback was for the same owner */
	if (lowner->clientid != wowner->clientid ||
	    lowner->id != wowner->id		 ||
	    lowner->s_dev != wowner->s_dev)
		return 0;

	/* Make sure it's for the right inode */
	if (nfs_compare_fh(NFS_FH(waiter->inode), &cbnl->cbnl_fh))
		return 0;

	waiter->notified = true;

	/* override "private" so we can use default_wake_function */
	wait->private = waiter->task;
	ret = autoremove_wake_function(wait, mode, flags, key);
	wait->private = waiter;
	return ret;
}

Contributors
Person Tokens Prop Commits CommitProp
jeff layton jeff layton 145 100.00% 1 100.00%
Total 145 100.00% 1 100.00%


static int

nfs4_retry_setlk(struct nfs4_state *state, int cmd, struct file_lock *request)
{
	int status = -ERESTARTSYS;
	unsigned long flags;
	struct nfs4_lock_state *lsp = request->fl_u.nfs4_fl.owner;
	struct nfs_server *server = NFS_SERVER(state->inode);
	struct nfs_client *clp = server->nfs_client;
	wait_queue_head_t *q = &clp->cl_lock_waitq;
	struct nfs_lowner owner = { .clientid = clp->cl_clientid,
				    .id = lsp->ls_seqid.owner_id,
				    .s_dev = server->s_dev };
	struct nfs4_lock_waiter waiter = { .task  = current,
					   .inode = state->inode,
					   .owner = &owner,
					   .notified = false };
	wait_queue_t wait;

	/* Don't bother with waitqueue if we don't expect a callback */
	if (!test_bit(NFS_STATE_MAY_NOTIFY_LOCK, &state->flags))
		return nfs4_retry_setlk_simple(state, cmd, request);

	init_wait(&wait);
	wait.private = &waiter;
	wait.func = nfs4_wake_lock_waiter;
	add_wait_queue(q, &wait);

	while(!signalled()) {
		status = nfs4_proc_setlk(state, cmd, request);
		if ((status != -EAGAIN) || IS_SETLK(cmd))
			break;

		status = -ERESTARTSYS;
		spin_lock_irqsave(&q->lock, flags);
		if (waiter.notified) {
			spin_unlock_irqrestore(&q->lock, flags);
			continue;
		}
		set_current_state(TASK_INTERRUPTIBLE);
		spin_unlock_irqrestore(&q->lock, flags);

		freezable_schedule_timeout_interruptible(NFS4_LOCK_MAXTIMEOUT);
	}

	finish_wait(q, &wait);
	return status;
}
Contributors
Person Tokens Prop Commits CommitProp
jeff layton jeff layton 283 100.00% 1 100.00%
Total 283 100.00% 1 100.00%

#else /* !CONFIG_NFS_V4_1 */

static inline int

nfs4_retry_setlk(struct nfs4_state *state, int cmd, struct file_lock *request)
{
	return nfs4_retry_setlk_simple(state, cmd, request);
}
Contributors
Person Tokens Prop Commits CommitProp
jeff layton jeff layton 30 100.00% 1 100.00%
Total 30 100.00% 1 100.00%

#endif


static int

nfs4_proc_lock(struct file *filp, int cmd, struct file_lock *request)
{
	struct nfs_open_context *ctx;
	struct nfs4_state *state;
	int status;

	/* verify open state */
	ctx = nfs_file_open_context(filp);
	state = ctx->state;

	if (request->fl_start < 0 || request->fl_end < 0)
		return -EINVAL;

	if (IS_GETLK(cmd)) {
		if (state != NULL)
			return nfs4_proc_getlk(state, F_GETLK, request);
		return 0;
	}

	if (!(IS_SETLK(cmd) || IS_SETLKW(cmd)))
		return -EINVAL;

	if (request->fl_type == F_UNLCK) {
		if (state != NULL)
			return nfs4_proc_unlck(state, cmd, request);
		return 0;
	}

	if (state == NULL)
		return -ENOLCK;

	if ((request->fl_flags & FL_POSIX) &&
	    !test_bit(NFS_STATE_POSIX_LOCKS, &state->flags))
		return -ENOLCK;

	/*
         * Don't rely on the VFS having checked the file open mode,
         * since it won't do this for flock() locks.
         */
	switch (request->fl_type) {
	case F_RDLCK:
		if (!(filp->f_mode & FMODE_READ))
			return -EBADF;
		break;
	case F_WRLCK:
		if (!(filp->f_mode & FMODE_WRITE))
			return -EBADF;
	}

	status = nfs4_set_lock_state(state, request);
	if (status != 0)
		return status;

	return nfs4_retry_setlk(state, cmd, request);
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 221 88.76% 5 71.43%
jeff layton jeff layton 28 11.24% 2 28.57%
Total 249 100.00% 7 100.00%



int nfs4_lock_delegation_recall(struct file_lock *fl, struct nfs4_state *state, const nfs4_stateid *stateid)
{
	struct nfs_server *server = NFS_SERVER(state->inode);
	int err;

	err = nfs4_set_lock_state(state, fl);
	if (err != 0)
		return err;
	err = _nfs4_do_setlk(state, F_SETLK, fl, NFS_LOCK_NEW);
	return nfs4_handle_delegation_recall_error(server, state, stateid, err);
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 77 98.72% 6 85.71%
alexandros batsakis alexandros batsakis 1 1.28% 1 14.29%
Total 78 100.00% 7 100.00%


struct nfs_release_lockowner_data {
	
struct nfs4_lock_state *lsp;
	
struct nfs_server *server;
	
struct nfs_release_lockowner_args args;
	
struct nfs_release_lockowner_res res;
	
unsigned long timestamp;
};



static void nfs4_release_lockowner_prepare(struct rpc_task *task, void *calldata)
{
	struct nfs_release_lockowner_data *data = calldata;
	struct nfs_server *server = data->server;
	nfs40_setup_sequence(server->nfs_client->cl_slot_tbl,
			     &data->args.seq_args, &data->res.seq_res, task);
	data->args.lock_owner.clientid = server->nfs_client->cl_clientid;
	data->timestamp = jiffies;
}

Contributors
Person Tokens Prop Commits CommitProp
chuck lever chuck lever 45 59.21% 2 40.00%
kinglong mee kinglong mee 23 30.26% 1 20.00%
trond myklebust trond myklebust 4 5.26% 1 20.00%
peng tao peng tao 4 5.26% 1 20.00%
Total 76 100.00% 5 100.00%



static void nfs4_release_lockowner_done(struct rpc_task *task, void *calldata)
{
	struct nfs_release_lockowner_data *data = calldata;
	struct nfs_server *server = data->server;

	nfs40_sequence_done(task, &data->res.seq_res);

	switch (task->tk_status) {
	case 0:
		renew_lease(server, data->timestamp);
		break;
	case -NFS4ERR_STALE_CLIENTID:
	case -NFS4ERR_EXPIRED:
		nfs4_schedule_lease_recovery(server->nfs_client);
		break;
	case -NFS4ERR_LEASE_MOVED:
	case -NFS4ERR_DELAY:
		if (nfs4_async_handle_error(task, server,
					    NULL, NULL) == -EAGAIN)
			rpc_restart_call_prepare(task);
	}
}

Contributors
Person Tokens Prop Commits CommitProp
chuck lever chuck lever 97 88.99% 2 40.00%
kinglong mee kinglong mee 8 7.34% 1 20.00%
neil brown neil brown 2 1.83% 1 20.00%
trond myklebust trond myklebust 2 1.83% 1 20.00%
Total 109 100.00% 5 100.00%



static void nfs4_release_lockowner_release(void *calldata)
{
	struct nfs_release_lockowner_data *data = calldata;
	nfs4_free_lock_state(data->server, data->lsp);
	kfree(calldata);
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 33 100.00% 3 100.00%
Total 33 100.00% 3 100.00%


static const struct rpc_call_ops nfs4_release_lockowner_ops = {
	.rpc_call_prepare = nfs4_release_lockowner_prepare,
	.rpc_call_done = nfs4_release_lockowner_done,
	.rpc_release = nfs4_release_lockowner_release,
};


static void

nfs4_release_lockowner(struct nfs_server *server, struct nfs4_lock_state *lsp)
{
	struct nfs_release_lockowner_data *data;
	struct rpc_message msg = {
		.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RELEASE_LOCKOWNER],
        };

	if (server->nfs_client->cl_mvops->minor_version != 0)
		return;

	data = kmalloc(sizeof(*data), GFP_NOFS);
	if (!data)
		return;
	data->lsp = lsp;
	data->server = server;
	data->args.lock_owner.clientid = server->nfs_client->cl_clientid;
	data->args.lock_owner.id = lsp->ls_seqid.owner_id;
	data->args.lock_owner.s_dev = server->s_dev;

	msg.rpc_argp = &data->args;
	msg.rpc_resp = &data->res;
	nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 0);
	rpc_call_async(server->client, &msg, 0, &nfs4_release_lockowner_ops, data);
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 171 98.28% 7 87.50%
jeff layton jeff layton 3 1.72% 1 12.50%
Total 174 100.00% 8 100.00%


#define XATTR_NAME_NFSV4_ACL "system.nfs4_acl"



static int nfs4_xattr_set_nfs4_acl(const struct xattr_handler *handler,
				   struct dentry *unused, struct inode *inode,
				   const char *key, const void *buf,
				   size_t buflen, int flags)
{
	return nfs4_proc_set_acl(inode, buf, buflen);
}

Contributors
Person Tokens Prop Commits CommitProp
j. bruce fields j. bruce fields 33 68.75% 2 40.00%
al viro al viro 7 14.58% 1 20.00%
andreas gruenbacher andreas gruenbacher 6 12.50% 1 20.00%
aneesh kumar aneesh kumar 2 4.17% 1 20.00%
Total 48 100.00% 5 100.00%



static int nfs4_xattr_get_nfs4_acl(const struct xattr_handler *handler,
				   struct dentry *unused, struct inode *inode,
				   const char *key, void *buf, size_t buflen)
{
	return nfs4_proc_get_acl(inode, buf, buflen);
}

Contributors
Person Tokens Prop Commits CommitProp
j. bruce fields j. bruce fields 28 63.64% 2 40.00%
al viro al viro 7 15.91% 1 20.00%
andreas gruenbacher andreas gruenbacher 6 13.64% 1 20.00%
aneesh kumar aneesh kumar 3 6.82% 1 20.00%
Total 44 100.00% 5 100.00%



static bool nfs4_xattr_list_nfs4_acl(struct dentry *dentry)
{
	return nfs4_server_supports_acls(NFS_SERVER(d_inode(dentry)));
}

Contributors
Person Tokens Prop Commits CommitProp
j. bruce fields j. bruce fields 16 69.57% 2 40.00%
david howells david howells 3 13.04% 1 20.00%
aneesh kumar aneesh kumar 2 8.70% 1 20.00%
andreas gruenbacher andreas gruenbacher 2 8.70% 1 20.00%
Total 23 100.00% 5 100.00%

#ifdef CONFIG_NFS_V4_SECURITY_LABEL



static int nfs4_xattr_set_nfs4_label(const struct xattr_handler *handler,
				     struct dentry *unused, struct inode *inode,
				     const char *key, const void *buf,
				     size_t buflen, int flags)
{
	if (security_ismaclabel(key))
		return nfs4_set_security_label(inode, buf, buflen);

	return -EOPNOTSUPP;
}

Contributors
Person Tokens Prop Commits CommitProp
j. bruce fields j. bruce fields 27 45.76% 2 33.33%
david quigley david quigley 17 28.81% 1 16.67%
al viro al viro 7 11.86% 1 16.67%
andreas gruenbacher andreas gruenbacher 6 10.17% 1 16.67%
aneesh kumar aneesh kumar 2 3.39% 1 16.67%
Total 59 100.00% 6 100.00%



static int nfs4_xattr_get_nfs4_label(const struct xattr_handler *handler,
				     struct dentry *unused, struct inode *inode,
				     const char *key, void *buf, size_t buflen)
{
	if (security_ismaclabel(key))
		return nfs4_get_security_label(inode, buf, buflen);
	return -EOPNOTSUPP;
}

Contributors
Person Tokens Prop Commits CommitProp
david quigley david quigley 33 60.00% 1 20.00%
j. bruce fields j. bruce fields 9 16.36% 2 40.00%
al viro al viro 7 12.73% 1 20.00%
andreas gruenbacher andreas gruenbacher 6 10.91% 1 20.00%
Total 55 100.00% 5 100.00%


static ssize_t

nfs4_listxattr_nfs4_label(struct inode *inode, char *list, size_t list_len)
{
	int len = 0;

	if (nfs_server_capable(inode, NFS_CAP_SECURITY_LABEL)) {
		len = security_inode_listsecurity(inode, list, list_len);
		if (list_len && len > list_len)
			return -ERANGE;
	}
	return len;
}

Contributors
Person Tokens Prop Commits CommitProp
j. bruce fields j. bruce fields 26 43.33% 3 42.86%
andreas gruenbacher andreas gruenbacher 16 26.67% 2 28.57%
david quigley david quigley 14 23.33% 1 14.29%
aneesh kumar aneesh kumar 4 6.67% 1 14.29%
Total 60 100.00% 7 100.00%


static const struct xattr_handler nfs4_xattr_nfs4_label_handler = {
	.prefix = XATTR_SECURITY_PREFIX,
	.get	= nfs4_xattr_get_nfs4_label,
	.set	= nfs4_xattr_set_nfs4_label,
};

#else


static ssize_t

nfs4_listxattr_nfs4_label(struct inode *inode, char *list, size_t list_len)
{
	return 0;
}

Contributors
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andreas gruenbacher andreas gruenbacher 21 100.00% 1 100.00%
Total 21 100.00% 1 100.00%

#endif

/*
 * nfs_fhget will use either the mounted_on_fileid or the fileid
 */


static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr)
{
	if (!(((fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID) ||
	       (fattr->valid & NFS_ATTR_FATTR_FILEID)) &&
	      (fattr->valid & NFS_ATTR_FATTR_FSID) &&
	      (fattr->valid & NFS_ATTR_FATTR_V4_LOCATIONS)))
		return;

	fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE |
		NFS_ATTR_FATTR_NLINK | NFS_ATTR_FATTR_V4_REFERRAL;
	fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO;
	fattr->nlink = 2;
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 66 83.54% 1 33.33%
andy adamson andy adamson 10 12.66% 1 33.33%
chuck lever chuck lever 3 3.80% 1 33.33%
Total 79 100.00% 3 100.00%



static int _nfs4_proc_fs_locations(struct rpc_clnt *client, struct inode *dir,
				   const struct qstr *name,
				   struct nfs4_fs_locations *fs_locations,
				   struct page *page)
{
	struct nfs_server *server = NFS_SERVER(dir);
	u32 bitmask[3] = {
		[0] = FATTR4_WORD0_FSID | FATTR4_WORD0_FS_LOCATIONS,
        };
	struct nfs4_fs_locations_arg args = {
		.dir_fh = NFS_FH(dir),
		.name = name,
		.page = page,
		.bitmask = bitmask,
        };
	struct nfs4_fs_locations_res res = {
		.fs_locations = fs_locations,
        };
	struct rpc_message msg = {
		.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS],
		.rpc_argp = &args,
		.rpc_resp = &res,
        };
	int status;

	dprintk("%s: start\n", __func__);

	/* Ask for the fileid of the absent filesystem if mounted_on_fileid
         * is not supported */
	if (NFS_SERVER(dir)->attr_bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)
		bitmask[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID;
	else
		bitmask[0] |= FATTR4_WORD0_FILEID;

	nfs_fattr_init(&fs_locations->fattr);
	fs_locations->server = server;
	fs_locations->nlocations = 0;
	status = nfs4_call_sync(client, server, &msg, &args.seq_args, &res.seq_res, 0);
	dprintk("%s: returned status = %d\n", __func__, status);
	return status;
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 146 66.06% 3 20.00%
andy adamson andy adamson 37 16.74% 2 13.33%
bryan schumaker bryan schumaker 14 6.33% 4 26.67%
benny halevy benny halevy 13 5.88% 1 6.67%
manoj naik manoj naik 8 3.62% 3 20.00%
harvey harrison harvey harrison 2 0.90% 1 6.67%
david quigley david quigley 1 0.45% 1 6.67%
Total 221 100.00% 15 100.00%



int nfs4_proc_fs_locations(struct rpc_clnt *client, struct inode *dir,
			   const struct qstr *name,
			   struct nfs4_fs_locations *fs_locations,
			   struct page *page)
{
	struct nfs4_exception exception = { };
	int err;
	do {
		err = _nfs4_proc_fs_locations(client, dir, name,
				fs_locations, page);
		trace_nfs4_get_fs_locations(dir, name, err);
		err = nfs4_handle_exception(NFS_SERVER(dir), err,
				&exception);
	} while (exception.retry);
	return err;
}

Contributors
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bryan schumaker bryan schumaker 72 78.26% 2 66.67%
trond myklebust trond myklebust 20 21.74% 1 33.33%
Total 92 100.00% 3 100.00%

/*
 * This operation also signals the server that this client is
 * performing migration recovery.  The server can stop returning
 * NFS4ERR_LEASE_MOVED to this client.  A RENEW operation is
 * appended to this compound to identify the client ID which is
 * performing recovery.
 */


static int _nfs40_proc_get_locations(struct inode *inode,
				     struct nfs4_fs_locations *locations,
				     struct page *page, struct rpc_cred *cred)
{
	struct nfs_server *server = NFS_SERVER(inode);
	struct rpc_clnt *clnt = server->client;
	u32 bitmask[2] = {
		[0] = FATTR4_WORD0_FSID | FATTR4_WORD0_FS_LOCATIONS,
        };
	struct nfs4_fs_locations_arg args = {
		.clientid	= server->nfs_client->cl_clientid,
		.fh		= NFS_FH(inode),
		.page		= page,
		.bitmask	= bitmask,
		.migration	= 1,		/* skip LOOKUP */
		.renew		= 1,		/* append RENEW */
	};
	struct nfs4_fs_locations_res res = {
		.fs_locations	= locations,
		.migration	= 1,
		.renew		= 1,
        };
	struct rpc_message msg = {
		.rpc_proc	= &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS],
		.rpc_argp	= &args,
		.rpc_resp	= &res,
		.rpc_cred	= cred,
        };
	unsigned long now = jiffies;
	int status;

	nfs_fattr_init(&locations->fattr);
	locations->server = server;
	locations->nlocations = 0;

	nfs4_init_sequence(&args.seq_args, &res.seq_res, 0);
	nfs4_set_sequence_privileged(&args.seq_args);
	status = nfs4_call_sync_sequence(clnt, server, &msg,
					&args.seq_args, &res.seq_res);
	if (status)
		return status;

	renew_lease(server, now);
	return 0;
}

Contributors
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chuck lever chuck lever 251 100.00% 1 100.00%
Total 251 100.00% 1 100.00%

#ifdef CONFIG_NFS_V4_1

/*
 * This operation also signals the server that this client is
 * performing migration recovery.  The server can stop asserting
 * SEQ4_STATUS_LEASE_MOVED for this client.  The client ID
 * performing this operation is identified in the SEQUENCE
 * operation in this compound.
 *
 * When the client supports GETATTR(fs_locations_info), it can
 * be plumbed in here.
 */


static int _nfs41_proc_get_locations(struct inode *inode,
				     struct nfs4_fs_locations *locations,
				     struct page *page, struct rpc_cred *cred)
{
	struct nfs_server *server = NFS_SERVER(inode);
	struct rpc_clnt *clnt = server->client;
	u32 bitmask[2] = {
		[0] = FATTR4_WORD0_FSID | FATTR4_WORD0_FS_LOCATIONS,
        };
	struct nfs4_fs_locations_arg args = {
		.fh		= NFS_FH(inode),
		.page		= page,
		.bitmask	= bitmask,
		.migration	= 1,		/* skip LOOKUP */
	};
	struct nfs4_fs_locations_res res = {
		.fs_locations	= locations,
		.migration	= 1,
        };
	struct rpc_message msg = {
		.rpc_proc	= &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS],
		.rpc_argp	= &args,
		.rpc_resp	= &res,
		.rpc_cred	= cred,
        };
	int status;

	nfs_fattr_init(&locations->fattr);
	locations->server = server;
	locations->nlocations = 0;

	nfs4_init_sequence(&args.seq_args, &res.seq_res, 0);
	nfs4_set_sequence_privileged(&args.seq_args);
	status = nfs4_call_sync_sequence(clnt, server, &msg,
					&args.seq_args, &res.seq_res);
	if (status == NFS4_OK &&
	    res.seq_res.sr_status_flags & SEQ4_STATUS_LEASE_MOVED)
		status = -NFS4ERR_LEASE_MOVED;
	return status;
}

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Total 230 100.00% 1 100.00%

#endif	/* CONFIG_NFS_V4_1 */

/**
 * nfs4_proc_get_locations - discover locations for a migrated FSID
 * @inode: inode on FSID that is migrating
 * @locations: result of query
 * @page: buffer
 * @cred: credential to use for this operation
 *
 * Returns NFS4_OK on success, a negative NFS4ERR status code if the
 * operation failed, or a negative errno if a local error occurred.
 *
 * On success, "locations" is filled in, but if the server has
 * no locations information, NFS_ATTR_FATTR_V4_LOCATIONS is not
 * asserted.
 *
 * -NFS4ERR_LEASE_MOVED is returned if the server still has leases
 * from this client that require migration recovery.
 */


int nfs4_proc_get_locations(struct inode *inode,
			    struct nfs4_fs_locations *locations,
			    struct page *page, struct rpc_cred *cred)
{
	struct nfs_server *server = NFS_SERVER(inode);
	struct nfs_client *clp = server->nfs_client;
	const struct nfs4_mig_recovery_ops *ops =
					clp->cl_mvops->mig_recovery_ops;
	struct nfs4_exception exception = { };
	int status;

	dprintk("%s: FSID %llx:%llx on \"%s\"\n", __func__,
		(unsigned long long)server->fsid.major,
		(unsigned long long)server->fsid.minor,
		clp->cl_hostname);
	nfs_display_fhandle(NFS_FH(inode), __func__);

	do {
		status = ops->get_locations(inode, locations, page, cred);
		if (status != -NFS4ERR_DELAY)
			break;
		nfs4_handle_exception(server, status, &exception);
	} while (exception.retry);
	return status;
}

Contributors
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chuck lever chuck lever 154 100.00% 1 100.00%
Total 154 100.00% 1 100.00%

/*
 * This operation also signals the server that this client is
 * performing "lease moved" recovery.  The server can stop
 * returning NFS4ERR_LEASE_MOVED to this client.  A RENEW operation
 * is appended to this compound to identify the client ID which is
 * performing recovery.
 */


static int _nfs40_proc_fsid_present(struct inode *inode, struct rpc_cred *cred)
{
	struct nfs_server *server = NFS_SERVER(inode);
	struct nfs_client *clp = NFS_SERVER(inode)->nfs_client;
	struct rpc_clnt *clnt = server->client;
	struct nfs4_fsid_present_arg args = {
		.fh		= NFS_FH(inode),
		.clientid	= clp->cl_clientid,
		.renew		= 1,		/* append RENEW */
	};
	struct nfs4_fsid_present_res res = {
		.renew		= 1,
        };
	struct rpc_message msg = {
		.rpc_proc	= &nfs4_procedures[NFSPROC4_CLNT_FSID_PRESENT],
		.rpc_argp	= &args,
		.rpc_resp	= &res,
		.rpc_cred	= cred,
        };
	unsigned long now = jiffies;
	int status;

	res.fh = nfs_alloc_fhandle();
	if (res.fh == NULL)
		return -ENOMEM;

	nfs4_init_sequence(&args.seq_args, &res.seq_res, 0);
	nfs4_set_sequence_privileged(&args.seq_args);
	status = nfs4_call_sync_sequence(clnt, server, &msg,
						&args.seq_args, &res.seq_res);
	nfs_free_fhandle(res.fh);
	if (status)
		return status;

	do_renew_lease(clp, now);
	return 0;
}

Contributors
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chuck lever chuck lever 215 100.00% 1 100.00%
Total 215 100.00% 1 100.00%

#ifdef CONFIG_NFS_V4_1

/*
 * This operation also signals the server that this client is
 * performing "lease moved" recovery.  The server can stop asserting
 * SEQ4_STATUS_LEASE_MOVED for this client.  The client ID performing
 * this operation is identified in the SEQUENCE operation in this
 * compound.
 */


static int _nfs41_proc_fsid_present(struct inode *inode, struct rpc_cred *cred)
{
	struct nfs_server *server = NFS_SERVER(inode);
	struct rpc_clnt *clnt = server->client;
	struct nfs4_fsid_present_arg args = {
		.fh		= NFS_FH(inode),
        };
	struct nfs4_fsid_present_res res = {
        };
	struct rpc_message msg = {
		.rpc_proc	= &nfs4_procedures[NFSPROC4_CLNT_FSID_PRESENT],
		.rpc_argp	= &args,
		.rpc_resp	= &res,
		.rpc_cred	= cred,
        };
	int status;

	res.fh = nfs_alloc_fhandle();
	if (res.fh == NULL)
		return -ENOMEM;

	nfs4_init_sequence(&args.seq_args, &res.seq_res, 0);
	nfs4_set_sequence_privileged(&args.seq_args);
	status = nfs4_call_sync_sequence(clnt, server, &msg,
						&args.seq_args, &res.seq_res);
	nfs_free_fhandle(res.fh);
	if (status == NFS4_OK &&
	    res.seq_res.sr_status_flags & SEQ4_STATUS_LEASE_MOVED)
		status = -NFS4ERR_LEASE_MOVED;
	return status;
}

Contributors
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chuck lever chuck lever 183 100.00% 1 100.00%
Total 183 100.00% 1 100.00%

#endif	/* CONFIG_NFS_V4_1 */

/**
 * nfs4_proc_fsid_present - Is this FSID present or absent on server?
 * @inode: inode on FSID to check
 * @cred: credential to use for this operation
 *
 * Server indicates whether the FSID is present, moved, or not
 * recognized.  This operation is necessary to clear a LEASE_MOVED
 * condition for this client ID.
 *
 * Returns NFS4_OK if the FSID is present on this server,
 * -NFS4ERR_MOVED if the FSID is no longer present, a negative
 *  NFS4ERR code if some error occurred on the server, or a
 *  negative errno if a local failure occurred.
 */


int nfs4_proc_fsid_present(struct inode *inode, struct rpc_cred *cred)
{
	struct nfs_server *server = NFS_SERVER(inode);
	struct nfs_client *clp = server->nfs_client;
	const struct nfs4_mig_recovery_ops *ops =
					clp->cl_mvops->mig_recovery_ops;
	struct nfs4_exception exception = { };
	int status;

	dprintk("%s: FSID %llx:%llx on \"%s\"\n", __func__,
		(unsigned long long)server->fsid.major,
		(unsigned long long)server->fsid.minor,
		clp->cl_hostname);
	nfs_display_fhandle(NFS_FH(inode), __func__);

	do {
		status = ops->fsid_present(inode, cred);
		if (status != -NFS4ERR_DELAY)
			break;
		nfs4_handle_exception(server, status, &exception);
	} while (exception.retry);
	return status;
}

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chuck lever chuck lever 140 100.00% 1 100.00%
Total 140 100.00% 1 100.00%

/**
 * If 'use_integrity' is true and the state managment nfs_client
 * cl_rpcclient is using krb5i/p, use the integrity protected cl_rpcclient
 * and the machine credential as per RFC3530bis and RFC5661 Security
 * Considerations sections. Otherwise, just use the user cred with the
 * filesystem's rpc_client.
 */


static int _nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, struct nfs4_secinfo_flavors *flavors, bool use_integrity)
{
	int status;
	struct nfs4_secinfo_arg args = {
		.dir_fh = NFS_FH(dir),
		.name   = name,
        };
	struct nfs4_secinfo_res res = {
		.flavors     = flavors,
        };
	struct rpc_message msg = {
		.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO],
		.rpc_argp = &args,
		.rpc_resp = &res,
        };
	struct rpc_clnt *clnt = NFS_SERVER(dir)->client;
	struct rpc_cred *cred = NULL;

	if (use_integrity) {
		clnt = NFS_SERVER(dir)->nfs_client->cl_rpcclient;
		cred = nfs4_get_clid_cred(NFS_SERVER(dir)->nfs_client);
		msg.rpc_cred = cred;
	}

	dprintk("NFS call  secinfo %s\n", name->name);

	nfs4_state_protect(NFS_SERVER(dir)->nfs_client,
		NFS_SP4_MACH_CRED_SECINFO, &clnt, &msg);

	status = nfs4_call_sync(clnt, NFS_SERVER(dir), &msg, &args.seq_args,
				&res.seq_res, 0);
	dprintk("NFS reply  secinfo: %d\n", status);

	if (cred)
		put_rpccred(cred);

	return status;
}

Contributors
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bryan schumaker bryan schumaker 133 62.74% 1 20.00%
weston andros adamson weston andros adamson 65 30.66% 3 60.00%
andy adamson andy adamson 14 6.60% 1 20.00%
Total 212 100.00% 5 100.00%



int nfs4_proc_secinfo(struct inode *dir, const struct qstr *name,
		      struct nfs4_secinfo_flavors *flavors)
{
	struct nfs4_exception exception = { };
	int err;
	do {
		err = -NFS4ERR_WRONGSEC;

		/* try to use integrity protection with machine cred */
		if (_nfs4_is_integrity_protected(NFS_SERVER(dir)->nfs_client))
			err = _nfs4_proc_secinfo(dir, name, flavors, true);

		/*
                 * if unable to use integrity protection, or SECINFO with
                 * integrity protection returns NFS4ERR_WRONGSEC (which is
                 * disallowed by spec, but exists in deployed servers) use
                 * the current filesystem's rpc_client and the user cred.
                 */
		if (err == -NFS4ERR_WRONGSEC)
			err = _nfs4_proc_secinfo(dir, name, flavors, false);

		trace_nfs4_secinfo(dir, name, err);
		err = nfs4_handle_exception(NFS_SERVER(dir), err,
				&exception);
	} while (exception.retry);
	return err;
}

Contributors
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bryan schumaker bryan schumaker 71 59.66% 1 33.33%
weston andros adamson weston andros adamson 35 29.41% 1 33.33%
trond myklebust trond myklebust 13 10.92% 1 33.33%
Total 119 100.00% 3 100.00%

#ifdef CONFIG_NFS_V4_1
/*
 * Check the exchange flags returned by the server for invalid flags, having
 * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or
 * DS flags set.
 */


static int nfs4_check_cl_exchange_flags(u32 flags)
{
	if (flags & ~EXCHGID4_FLAG_MASK_R)
		goto out_inval;
	if ((flags & EXCHGID4_FLAG_USE_PNFS_MDS) &&
	    (flags & EXCHGID4_FLAG_USE_NON_PNFS))
		goto out_inval;
	if (!(flags & (EXCHGID4_FLAG_MASK_PNFS)))
		goto out_inval;
	return NFS_OK;
out_inval:
	return -NFS4ERR_INVAL;
}

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andy adamson andy adamson 59 100.00% 1 100.00%
Total 59 100.00% 1 100.00%


static bool

nfs41_same_server_scope(struct nfs41_server_scope *a,
			struct nfs41_server_scope *b)
{
	if (a->server_scope_sz == b->server_scope_sz &&
	    memcmp(a->server_scope, b->server_scope, a->server_scope_sz) == 0)
		return true;

	return false;
}

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weston andros adamson weston andros adamson 47 95.92% 1 50.00%
chuck lever chuck lever 2 4.08% 1 50.00%
Total 49 100.00% 2 100.00%


static void

nfs4_bind_one_conn_to_session_done(struct rpc_task *task, void *calldata)
{
}

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Total 14 100.00% 1 100.00%


static const struct rpc_call_ops nfs4_bind_one_conn_to_session_ops = {
	.rpc_call_done =  &nfs4_bind_one_conn_to_session_done,
};

/*
 * nfs4_proc_bind_one_conn_to_session()
 *
 * The 4.1 client currently uses the same TCP connection for the
 * fore and backchannel.
 */

static

int nfs4_proc_bind_one_conn_to_session(struct rpc_clnt *clnt,
		struct rpc_xprt *xprt,
		struct nfs_client *clp,
		struct rpc_cred *cred)
{
	int status;
	struct nfs41_bind_conn_to_session_args args = {
		.client = clp,
		.dir = NFS4_CDFC4_FORE_OR_BOTH,
        };
	struct nfs41_bind_conn_to_session_res res;
	struct rpc_message msg = {
		.rpc_proc =
			&nfs4_procedures[NFSPROC4_CLNT_BIND_CONN_TO_SESSION],
		.rpc_argp = &args,
		.rpc_resp = &res,
		.rpc_cred = cred,
        };
	struct rpc_task_setup task_setup_data = {
		.rpc_client = clnt,
		.rpc_xprt = xprt,
		.callback_ops = &nfs4_bind_one_conn_to_session_ops,
		.rpc_message = &msg,
		.flags = RPC_TASK_TIMEOUT,
        };
	struct rpc_task *task;

	dprintk("--> %s\n", __func__);

	nfs4_copy_sessionid(&args.sessionid, &clp->cl_session->sess_id);
	if (!(clp->cl_session->flags & SESSION4_BACK_CHAN))
		args.dir = NFS4_CDFC4_FORE;

	/* Do not set the backchannel flag unless this is clnt->cl_xprt */
	if (xprt != rcu_access_pointer(clnt->cl_xprt))
		args.dir = NFS4_CDFC4_FORE;

	task = rpc_run_task(&task_setup_data);
	if (!IS_ERR(task)) {
		status = task->tk_status;
		rpc_put_task(task);
	} else
		status = PTR_ERR(task);
	trace_nfs4_bind_conn_to_session(clp, status);
	if (status == 0) {
		if (memcmp(res.sessionid.data,
		    clp->cl_session->sess_id.data, NFS4_MAX_SESSIONID_LEN)) {
			dprintk("NFS: %s: Session ID mismatch\n", __func__);
			status = -EIO;
			goto out;
		}
		if ((res.dir & args.dir) != res.dir || res.dir == 0) {
			dprintk("NFS: %s: Unexpected direction from server\n",
				__func__);
			status = -EIO;
			goto out;
		}
		if (res.use_conn_in_rdma_mode != args.use_conn_in_rdma_mode) {
			dprintk("NFS: %s: Server returned RDMA mode = true\n",
				__func__);
			status = -EIO;
			goto out;
		}
	}
out:
	dprintk("<-- %s status= %d\n", __func__, status);
	return status;
}

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trond myklebust trond myklebust 177 50.86% 4 66.67%
weston andros adamson weston andros adamson 165 47.41% 1 16.67%
andy adamson andy adamson 6 1.72% 1 16.67%
Total 348 100.00% 6 100.00%


struct rpc_bind_conn_calldata {
	
struct nfs_client *clp;
	
struct rpc_cred *cred;
};


static int

nfs4_proc_bind_conn_to_session_callback(struct rpc_clnt *clnt,
		struct rpc_xprt *xprt,
		void *calldata)
{
	struct rpc_bind_conn_calldata *p = calldata;

	return nfs4_proc_bind_one_conn_to_session(clnt, xprt, p->clp, p->cred);
}

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int nfs4_proc_bind_conn_to_session(struct nfs_client *clp, struct rpc_cred *cred)
{
	struct rpc_bind_conn_calldata data = {
		.clp = clp,
		.cred = cred,
        };
	return rpc_clnt_iterate_for_each_xprt(clp->cl_rpcclient,
			nfs4_proc_bind_conn_to_session_callback, &data);
}

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Total 44 100.00% 1 100.00%

/*
 * Minimum set of SP4_MACH_CRED operations from RFC 5661 in the enforce map
 * and operations we'd like to see to enable certain features in the allow map
 */

static const struct nfs41_state_protection nfs4_sp4_mach_cred_request = {
	.how = SP4_MACH_CRED,
	.enforce.u.words = {
		[1] = 1 << (OP_BIND_CONN_TO_SESSION - 32) |
		      1 << (OP_EXCHANGE_ID - 32) |
		      1 << (OP_CREATE_SESSION - 32) |
		      1 << (OP_DESTROY_SESSION - 32) |
		      1 << (OP_DESTROY_CLIENTID - 32)
	},
	.allow.u.words = {
		[0] = 1 << (OP_CLOSE) |
		      1 << (OP_OPEN_DOWNGRADE) |
		      1 << (OP_LOCKU) |
		      1 << (OP_DELEGRETURN) |
		      1 << (OP_COMMIT),
		[1] = 1 << (OP_SECINFO - 32) |
		      1 << (OP_SECINFO_NO_NAME - 32) |
		      1 << (OP_LAYOUTRETURN - 32) |
		      1 << (OP_TEST_STATEID - 32) |
		      1 << (OP_FREE_STATEID - 32) |
		      1 << (OP_WRITE - 32)
	}
};

/*
 * Select the state protection mode for client `clp' given the server results
 * from exchange_id in `sp'.
 *
 * Returns 0 on success, negative errno otherwise.
 */


static int nfs4_sp4_select_mode(struct nfs_client *clp,
				 struct nfs41_state_protection *sp)
{
	static const u32 supported_enforce[NFS4_OP_MAP_NUM_WORDS] = {
		[1] = 1 << (OP_BIND_CONN_TO_SESSION - 32) |
		      1 << (OP_EXCHANGE_ID - 32) |
		      1 << (OP_CREATE_SESSION - 32) |
		      1 << (OP_DESTROY_SESSION - 32) |
		      1 << (OP_DESTROY_CLIENTID - 32)
	};
	unsigned int i;

	if (sp->how == SP4_MACH_CRED) {
		/* Print state protect result */
		dfprintk(MOUNT, "Server SP4_MACH_CRED support:\n");
		for (i = 0; i <= LAST_NFS4_OP; i++) {
			if (test_bit(i, sp->enforce.u.longs))
				dfprintk(MOUNT, "  enforce op %d\n", i);
			if (test_bit(i, sp->allow.u.longs))
				dfprintk(MOUNT, "  allow op %d\n", i);
		}

		/* make sure nothing is on enforce list that isn't supported */
		for (i = 0; i < NFS4_OP_MAP_NUM_WORDS; i++) {
			if (sp->enforce.u.words[i] & ~supported_enforce[i]) {
				dfprintk(MOUNT, "sp4_mach_cred: disabled\n");
				return -EINVAL;
			}
		}

		/*
                 * Minimal mode - state operations are allowed to use machine
                 * credential.  Note this already happens by default, so the
                 * client doesn't have to do anything more than the negotiation.
                 *
                 * NOTE: we don't care if EXCHANGE_ID is in the list -
                 *       we're already using the machine cred for exchange_id
                 *       and will never use a different cred.
                 */
		if (test_bit(OP_BIND_CONN_TO_SESSION, sp->enforce.u.longs) &&
		    test_bit(OP_CREATE_SESSION, sp->enforce.u.longs) &&
		    test_bit(OP_DESTROY_SESSION, sp->enforce.u.longs) &&
		    test_bit(OP_DESTROY_CLIENTID, sp->enforce.u.longs)) {
			dfprintk(MOUNT, "sp4_mach_cred:\n");
			dfprintk(MOUNT, "  minimal mode enabled\n");
			set_bit(NFS_SP4_MACH_CRED_MINIMAL, &clp->cl_sp4_flags);
		} else {
			dfprintk(MOUNT, "sp4_mach_cred: disabled\n");
			return -EINVAL;
		}

		if (test_bit(OP_CLOSE, sp->allow.u.longs) &&
		    test_bit(OP_OPEN_DOWNGRADE, sp->allow.u.longs) &&
		    test_bit(OP_DELEGRETURN, sp->allow.u.longs) &&
		    test_bit(OP_LOCKU, sp->allow.u.longs)) {
			dfprintk(MOUNT, "  cleanup mode enabled\n");
			set_bit(NFS_SP4_MACH_CRED_CLEANUP, &clp->cl_sp4_flags);
		}

		if (test_bit(OP_LAYOUTRETURN, sp->allow.u.longs)) {
			dfprintk(MOUNT, "  pnfs cleanup mode enabled\n");
			set_bit(NFS_SP4_MACH_CRED_PNFS_CLEANUP,
				&clp->cl_sp4_flags);
		}

		if (test_bit(OP_SECINFO, sp->allow.u.longs) &&
		    test_bit(OP_SECINFO_NO_NAME, sp->allow.u.longs)) {
			dfprintk(MOUNT, "  secinfo mode enabled\n");
			set_bit(NFS_SP4_MACH_CRED_SECINFO, &clp->cl_sp4_flags);
		}

		if (test_bit(OP_TEST_STATEID, sp->allow.u.longs) &&
		    test_bit(OP_FREE_STATEID, sp->allow.u.longs)) {
			dfprintk(MOUNT, "  stateid mode enabled\n");
			set_bit(NFS_SP4_MACH_CRED_STATEID, &clp->cl_sp4_flags);
		}

		if (test_bit(OP_WRITE, sp->allow.u.longs)) {
			dfprintk(MOUNT, "  write mode enabled\n");
			set_bit(NFS_SP4_MACH_CRED_WRITE, &clp->cl_sp4_flags);
		}

		if (test_bit(OP_COMMIT, sp->allow.u.longs)) {
			dfprintk(MOUNT, "  commit mode enabled\n");
			set_bit(NFS_SP4_MACH_CRED_COMMIT, &clp->cl_sp4_flags);
		}
	}

	return 0;
}

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andrew elble andrew elble 60 10.53% 1 14.29%
benny halevy benny halevy 1 0.18% 1 14.29%
Total 570 100.00% 7 100.00%


struct nfs41_exchange_id_data {
	
struct nfs41_exchange_id_res res;
	
struct nfs41_exchange_id_args args;
	
struct rpc_xprt *xprt;
	
int rpc_status;
};



static void nfs4_exchange_id_done(struct rpc_task *task, void *data)
{
	struct nfs41_exchange_id_data *cdata =
					(struct nfs41_exchange_id_data *)data;
	struct nfs_client *clp = cdata->args.client;
	int status = task->tk_status;

	trace_nfs4_exchange_id(clp, status);

	if (status == 0)
		status = nfs4_check_cl_exchange_flags(cdata->res.flags);

	if (cdata->xprt && status == 0) {
		status = nfs4_detect_session_trunking(clp, &cdata->res,
						      cdata->xprt);
		goto out;
	}

	if (status  == 0)
		status = nfs4_sp4_select_mode(clp, &cdata->res.state_protect);

	if (status == 0) {
		clp->cl_clientid = cdata->res.clientid;
		clp->cl_exchange_flags = cdata->res.flags;
		/* Client ID is not confirmed */
		if (!(cdata->res.flags & EXCHGID4_FLAG_CONFIRMED_R)) {
			clear_bit(NFS4_SESSION_ESTABLISHED,
			&clp->cl_session->session_state);
			clp->cl_seqid = cdata->res.seqid;
		}

		kfree(clp->cl_serverowner);
		clp->cl_serverowner = cdata->res.server_owner;
		cdata->res.server_owner = NULL;

		/* use the most recent implementation id */
		kfree(clp->cl_implid);
		clp->cl_implid = cdata->res.impl_id;
		cdata->res.impl_id = NULL;

		if (clp->cl_serverscope != NULL &&
		    !nfs41_same_server_scope(clp->cl_serverscope,
					cdata->res.server_scope)) {
			dprintk("%s: server_scope mismatch detected\n",
				__func__);
			set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH, &clp->cl_state);
			kfree(clp->cl_serverscope);
			clp->cl_serverscope = NULL;
		}

		if (clp->cl_serverscope == NULL) {
			clp->cl_serverscope = cdata->res.server_scope;
			cdata->res.server_scope = NULL;
		}
		/* Save the EXCHANGE_ID verifier session trunk tests */
		memcpy(clp->cl_confirm.data, cdata->args.verifier->data,
		       sizeof(clp->cl_confirm.data));
	}
out:
	cdata->rpc_status = status;
	return;
}

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benny halevy benny halevy 16 4.51% 1 16.67%
chuck lever chuck lever 10 2.82% 2 33.33%
weston andros adamson weston andros adamson 1 0.28% 1 16.67%
Total 355 100.00% 6 100.00%



static void nfs4_exchange_id_release(void *data)
{
	struct nfs41_exchange_id_data *cdata =
					(struct nfs41_exchange_id_data *)data;

	nfs_put_client(cdata->args.client);
	if (cdata->xprt) {
		xprt_put(cdata->xprt);
		rpc_clnt_xprt_switch_put(cdata->args.client->cl_rpcclient);
	}
	kfree(cdata->res.impl_id);
	kfree(cdata->res.server_scope);
	kfree(cdata->res.server_owner);
	kfree(cdata);
}

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benny halevy benny halevy 1 1.12% 1 33.33%
Total 89 100.00% 3 100.00%


static const struct rpc_call_ops nfs4_exchange_id_call_ops = {
	.rpc_call_done = nfs4_exchange_id_done,
	.rpc_release = nfs4_exchange_id_release,
};

/*
 * _nfs4_proc_exchange_id()
 *
 * Wrapper for EXCHANGE_ID operation.
 */


static int _nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred,
			u32 sp4_how, struct rpc_xprt *xprt)
{
	nfs4_verifier verifier;
	struct rpc_message msg = {
		.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_EXCHANGE_ID],
		.rpc_cred = cred,
        };
	struct rpc_task_setup task_setup_data = {
		.rpc_client = clp->cl_rpcclient,
		.callback_ops = &nfs4_exchange_id_call_ops,
		.rpc_message = &msg,
		.flags = RPC_TASK_ASYNC | RPC_TASK_TIMEOUT,
        };
	struct nfs41_exchange_id_data *calldata;
	struct rpc_task *task;
	int status = -EIO;

	if (!atomic_inc_not_zero(&clp->cl_count))
		goto out;

	status = -ENOMEM;
	calldata = kzalloc(sizeof(*calldata), GFP_NOFS);
	if (!calldata)
		goto out;

	if (!xprt)
		nfs4_init_boot_verifier(clp, &verifier);

	status = nfs4_init_uniform_client_string(clp);
	if (status)
		goto out_calldata;

	dprintk("NFS call  exchange_id auth=%s, '%s'\n",
		clp->cl_rpcclient->cl_auth->au_ops->au_name,
		clp->cl_owner_id);

	calldata->res.server_owner = kzalloc(sizeof(struct nfs41_server_owner),
						GFP_NOFS);
	status = -ENOMEM;
	if (unlikely(calldata->res.server_owner == NULL))
		goto out_calldata;

	calldata->res.server_scope = kzalloc(sizeof(struct nfs41_server_scope),
					GFP_NOFS);
	if (unlikely(calldata->res.server_scope == NULL))
		goto out_server_owner;

	calldata->res.impl_id = kzalloc(sizeof(struct nfs41_impl_id), GFP_NOFS);
	if (unlikely(calldata->res.impl_id == NULL))
		goto out_server_scope;

	switch (sp4_how) {
	case SP4_NONE:
		calldata->args.state_protect.how = SP4_NONE;
		break;

	case SP4_MACH_CRED:
		calldata->args.state_protect = nfs4_sp4_mach_cred_request;
		break;

	default:
		/* unsupported! */
		WARN_ON_ONCE(1);
		status = -EINVAL;
		goto out_impl_id;
	}
	if (xprt) {
		calldata->xprt = xprt;
		task_setup_data.rpc_xprt = xprt;
		task_setup_data.flags =
				RPC_TASK_SOFT|RPC_TASK_SOFTCONN|RPC_TASK_ASYNC;
		calldata->args.verifier = &clp->cl_confirm;
	} else {
		calldata->args.verifier = &verifier;
	}
	calldata->args.client = clp;
#ifdef CONFIG_NFS_V4_1_MIGRATION
	calldata->args.flags = EXCHGID4_FLAG_SUPP_MOVED_REFER |
	EXCHGID4_FLAG_BIND_PRINC_STATEID |
	EXCHGID4_FLAG_SUPP_MOVED_MIGR,
#else
	calldata->args.flags = EXCHGID4_FLAG_SUPP_MOVED_REFER |
	EXCHGID4_FLAG_BIND_PRINC_STATEID,
#endif
	msg.rpc_argp = &calldata->args;
	msg.rpc_resp = &calldata->res;
	task_setup_data.callback_data = calldata;

	task = rpc_run_task(&task_setup_data);
	if (IS_ERR(task)) {
	status = PTR_ERR(task);
		goto out_impl_id;
	}

	if (!xprt) {
		status = rpc_wait_for_completion_task(task);
		if (!status)
			status = calldata->rpc_status;
	} else	/* session trunking test */
		status = calldata->rpc_status;

	rpc_put_task(task);
out:
	if (clp->cl_implid != NULL)
		dprintk("NFS reply exchange_id: Server Implementation ID: "
			"domain: %s, name: %s, date: %llu,%u\n",
			clp->cl_implid->domain, clp->cl_implid->name,
			clp->cl_implid->date.seconds,
			clp->cl_implid->date.nseconds);
	dprintk("NFS reply exchange_id: %d\n", status);
	return status;

out_impl_id:
	kfree(calldata->res.impl_id);
out_server_scope:
	kfree(calldata->res.server_scope);
out_server_owner:
	kfree(calldata->res.server_owner);
out_calldata:
	kfree(calldata);
	goto out;
}

Contributors
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andy adamson andy adamson 290 47.85% 3 13.64%
weston andros adamson weston andros adamson 173 28.55% 4 18.18%
chuck lever chuck lever 59 9.74% 8 36.36%
benny halevy benny halevy 49 8.09% 1 4.55%
trond myklebust trond myklebust 18 2.97% 3 13.64%
jeff layton jeff layton 11 1.82% 2 9.09%
kinglong mee kinglong mee 6 0.99% 1 4.55%
Total 606 100.00% 22 100.00%

/*
 * nfs4_proc_exchange_id()
 *
 * Returns zero, a negative errno, or a negative NFS4ERR status code.
 *
 * Since the clientid has expired, all compounds using sessions
 * associated with the stale clientid will be returning
 * NFS4ERR_BADSESSION in the sequence operation, and will therefore
 * be in some phase of session reset.
 *
 * Will attempt to negotiate SP4_MACH_CRED if krb5i / krb5p auth is used.
 */


int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred)
{
	rpc_authflavor_t authflavor = clp->cl_rpcclient->cl_auth->au_flavor;
	int status;

	/* try SP4_MACH_CRED if krb5i/p */
	if (authflavor == RPC_AUTH_GSS_KRB5I ||
	    authflavor == RPC_AUTH_GSS_KRB5P) {
		status = _nfs4_proc_exchange_id(clp, cred, SP4_MACH_CRED, NULL);
		if (!status)
			return 0;
	}

	/* try SP4_NONE */
	return _nfs4_proc_exchange_id(clp, cred, SP4_NONE, NULL);
}

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weston andros adamson weston andros adamson 72 94.74% 1 50.00%
andy adamson andy adamson 4 5.26% 1 50.00%
Total 76 100.00% 2 100.00%

/**
 * nfs4_test_session_trunk
 *
 * This is an add_xprt_test() test function called from
 * rpc_clnt_setup_test_and_add_xprt.
 *
 * The rpc_xprt_switch is referrenced by rpc_clnt_setup_test_and_add_xprt
 * and is dereferrenced in nfs4_exchange_id_release
 *
 * Upon success, add the new transport to the rpc_clnt
 *
 * @clnt: struct rpc_clnt to get new transport
 * @xprt: the rpc_xprt to test
 * @data: call data for _nfs4_proc_exchange_id.
 */


int nfs4_test_session_trunk(struct rpc_clnt *clnt, struct rpc_xprt *xprt,
			    void *data)
{
	struct nfs4_add_xprt_data *adata = (struct nfs4_add_xprt_data *)data;
	u32 sp4_how;

	dprintk("--> %s try %s\n", __func__,
		xprt->address_strings[RPC_DISPLAY_ADDR]);

	sp4_how = (adata->clp->cl_sp4_flags == 0 ? SP4_NONE : SP4_MACH_CRED);

	/* Test connection for session trunking. Async exchange_id call */
	return  _nfs4_proc_exchange_id(adata->clp, adata->cred, sp4_how, xprt);
}
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Total 81 100.00% 1 100.00%


EXPORT_SYMBOL_GPL(nfs4_test_session_trunk);



static int _nfs4_proc_destroy_clientid(struct nfs_client *clp,
		struct rpc_cred *cred)
{
	struct rpc_message msg = {
		.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DESTROY_CLIENTID],
		.rpc_argp = clp,
		.rpc_cred = cred,
        };
	int status;

	status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT);
	trace_nfs4_destroy_clientid(clp, status);
	if (status)
		dprintk("NFS: Got error %d from the server %s on "
			"DESTROY_CLIENTID.", status, clp->cl_hostname);
	return status;
}

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static int nfs4_proc_destroy_clientid(struct nfs_client *clp,
		struct rpc_cred *cred)
{
	unsigned int loop;
	int ret;

	for (loop = NFS4_MAX_LOOP_ON_RECOVER; loop != 0; loop--) {
		ret = _nfs4_proc_destroy_clientid(clp, cred);
		switch (ret) {
		case -NFS4ERR_DELAY:
		case -NFS4ERR_CLIENTID_BUSY:
			ssleep(1);
			break;
		default:
			return ret;
		}
	}
	return 0;
}

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int nfs4_destroy_clientid(struct nfs_client *clp)
{
	struct rpc_cred *cred;
	int ret = 0;

	if (clp->cl_mvops->minor_version < 1)
		goto out;
	if (clp->cl_exchange_flags == 0)
		goto out;
	if (clp->cl_preserve_clid)
		goto out;
	cred = nfs4_get_clid_cred(clp);
	ret = nfs4_proc_destroy_clientid(clp, cred);
	if (cred)
		put_rpccred(cred);
	switch (ret) {
	case 0:
	case -NFS4ERR_STALE_CLIENTID:
		clp->cl_exchange_flags = 0;
	}
out:
	return ret;
}

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Total 102 100.00% 3 100.00%


struct nfs4_get_lease_time_data {
	
struct nfs4_get_lease_time_args *args;
	
struct nfs4_get_lease_time_res *res;
	
struct nfs_client *clp;
};



static void nfs4_get_lease_time_prepare(struct rpc_task *task,
					void *calldata)
{
	struct nfs4_get_lease_time_data *data =
			(struct nfs4_get_lease_time_data *)calldata;

	dprintk("--> %s\n", __func__);
	/* just setup sequence, do not trigger session recovery
           since we're invoked within one */
	nfs41_setup_sequence(data->clp->cl_session,
			&data->args->la_seq_args,
			&data->res->lr_seq_res,
			task);
	dprintk("<-- %s\n", __func__);
}

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Total 67 100.00% 1 100.00%

/*
 * Called from nfs4_state_manager thread for session setup, so don't recover
 * from sequence operation or clientid errors.
 */


static void nfs4_get_lease_time_done(struct rpc_task *task, void *calldata)
{
	struct nfs4_get_lease_time_data *data =
			(struct nfs4_get_lease_time_data *)calldata;

	dprintk("--> %s\n", __func__);
	if (!nfs41_sequence_done(task, &data->res->lr_seq_res))
		return;
	switch (task->tk_status) {
	case -NFS4ERR_DELAY:
	case -NFS4ERR_GRACE:
		dprintk("%s Retry: tk_status %d\n", __func__, task->tk_status);
		rpc_delay(task, NFS4_POLL_RETRY_MIN);
		task->tk_status = 0;
		/* fall through */
	case -NFS4ERR_RETRY_UNCACHED_REP:
		rpc_restart_call_prepare(task);
		return;
	}
	dprintk("<-- %s\n", __func__);
}

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trond myklebust trond myklebust 10 9.26% 3 60.00%
Total 108 100.00% 5 100.00%


static const struct rpc_call_ops nfs4_get_lease_time_ops = {
	.rpc_call_prepare = nfs4_get_lease_time_prepare,
	.rpc_call_done = nfs4_get_lease_time_done,
};



int nfs4_proc_get_lease_time(struct nfs_client *clp, struct nfs_fsinfo *fsinfo)
{
	struct rpc_task *task;
	struct nfs4_get_lease_time_args args;
	struct nfs4_get_lease_time_res res = {
		.lr_fsinfo = fsinfo,
        };
	struct nfs4_get_lease_time_data data = {
		.args = &args,
		.res = &res,
		.clp = clp,
        };
	struct rpc_message msg = {
		.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GET_LEASE_TIME],
		.rpc_argp = &args,
		.rpc_resp = &res,
        };
	struct rpc_task_setup task_setup = {
		.rpc_client = clp->cl_rpcclient,
		.rpc_message = &msg,
		.callback_ops = &nfs4_get_lease_time_ops,
		.callback_data = &data,
		.flags = RPC_TASK_TIMEOUT,
        };
	int status;

	nfs4_init_sequence(&args.la_seq_args, &res.lr_seq_res, 0);
	nfs4_set_sequence_privileged(&args.la_seq_args);
	dprintk("--> %s\n", __func__);
	task = rpc_run_task(&task_setup);

	if (IS_ERR(task))
		status = PTR_ERR(task);
	else {
		status = task->tk_status;
		rpc_put_task(task);
	}
	dprintk("<-- %s return %d\n", __func__, status);

	return status;
}

Contributors
Person Tokens Prop Commits CommitProp
andy adamson andy adamson 173 85.64% 1 20.00%
trond myklebust trond myklebust 28 13.86% 3 60.00%
chuck lever chuck lever 1 0.50% 1 20.00%
Total 202 100.00% 5 100.00%

/*
 * Initialize the values to be used by the client in CREATE_SESSION
 * If nfs4_init_session set the fore channel request and response sizes,
 * use them.
 *
 * Set the back channel max_resp_sz_cached to zero to force the client to
 * always set csa_cachethis to FALSE because the current implementation
 * of the back channel DRC only supports caching the CB_SEQUENCE operation.
 */


static void nfs4_init_channel_attrs(struct nfs41_create_session_args *args,
				    struct rpc_clnt *clnt)
{
	unsigned int max_rqst_sz, max_resp_sz;
	unsigned int max_bc_payload = rpc_max_bc_payload(clnt);

	max_rqst_sz = NFS_MAX_FILE_IO_SIZE + nfs41_maxwrite_overhead;
	max_resp_sz = NFS_MAX_FILE_IO_SIZE + nfs41_maxread_overhead;

	/* Fore channel attributes */
	args->fc_attrs.max_rqst_sz = max_rqst_sz;
	args->fc_attrs.max_resp_sz = max_resp_sz;
	args->fc_attrs.max_ops = NFS4_MAX_OPS;
	args->fc_attrs.max_reqs = max_session_slots;

	dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u "
		"max_ops=%u max_reqs=%u\n",
		__func__,
		args->fc_attrs.max_rqst_sz, args->fc_attrs.max_resp_sz,
		args->fc_attrs.max_ops, args->fc_attrs.max_reqs);

	/* Back channel attributes */
	args->bc_attrs.max_rqst_sz = max_bc_payload;
	args->bc_attrs.max_resp_sz = max_bc_payload;
	args->bc_attrs.max_resp_sz_cached = 0;
	args->bc_attrs.max_ops = NFS4_MAX_BACK_CHANNEL_OPS;
	args->bc_attrs.max_reqs = min_t(unsigned short, max_session_cb_slots, 1);

	dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u "
		"max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n",
		__func__,
		args->bc_attrs.max_rqst_sz, args->bc_attrs.max_resp_sz,
		args->bc_attrs.max_resp_sz_cached, args->bc_attrs.max_ops,
		args->bc_attrs.max_reqs);
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 145 74.74% 7 58.33%
andy adamson andy adamson 31 15.98% 3 25.00%
chuck lever chuck lever 16 8.25% 1 8.33%
ricardo labiaga ricardo labiaga 2 1.03% 1 8.33%
Total 194 100.00% 12 100.00%



static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args *args,
		struct nfs41_create_session_res *res)
{
	struct nfs4_channel_attrs *sent = &args->fc_attrs;
	struct nfs4_channel_attrs *rcvd = &res->fc_attrs;

	if (rcvd->max_resp_sz > sent->max_resp_sz)
		return -EINVAL;
	/*
         * Our requested max_ops is the minimum we need; we're not
         * prepared to break up compounds into smaller pieces than that.
         * So, no point even trying to continue if the server won't
         * cooperate:
         */
	if (rcvd->max_ops < sent->max_ops)
		return -EINVAL;
	if (rcvd->max_reqs == 0)
		return -EINVAL;
	if (rcvd->max_reqs > NFS4_MAX_SLOT_TABLE)
		rcvd->max_reqs = NFS4_MAX_SLOT_TABLE;
	return 0;
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 89 94.68% 3 75.00%
ricardo labiaga ricardo labiaga 5 5.32% 1 25.00%
Total 94 100.00% 4 100.00%



static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args *args,
		struct nfs41_create_session_res *res)
{
	struct nfs4_channel_attrs *sent = &args->bc_attrs;
	struct nfs4_channel_attrs *rcvd = &res->bc_attrs;

	if (!(res->flags & SESSION4_BACK_CHAN))
		goto out;
	if (rcvd->max_rqst_sz > sent->max_rqst_sz)
		return -EINVAL;
	if (rcvd->max_resp_sz < sent->max_resp_sz)
		return -EINVAL;
	if (rcvd->max_resp_sz_cached > sent->max_resp_sz_cached)
		return -EINVAL;
	if (rcvd->max_ops > sent->max_ops)
		return -EINVAL;
	if (rcvd->max_reqs > sent->max_reqs)
		return -EINVAL;
out:
	return 0;
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 101 80.80% 7 63.64%
ricardo labiaga ricardo labiaga 15 12.00% 2 18.18%
andy adamson andy adamson 9 7.20% 2 18.18%
Total 125 100.00% 11 100.00%



static int nfs4_verify_channel_attrs(struct nfs41_create_session_args *args,
				     struct nfs41_create_session_res *res)
{
	int ret;

	ret = nfs4_verify_fore_channel_attrs(args, res);
	if (ret)
		return ret;
	return nfs4_verify_back_channel_attrs(args, res);
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 22 51.16% 2 50.00%
andy adamson andy adamson 21 48.84% 2 50.00%
Total 43 100.00% 4 100.00%



static void nfs4_update_session(struct nfs4_session *session,
		struct nfs41_create_session_res *res)
{
	nfs4_copy_sessionid(&session->sess_id, &res->sessionid);
	/* Mark client id and session as being confirmed */
	session->clp->cl_exchange_flags |= EXCHGID4_FLAG_CONFIRMED_R;
	set_bit(NFS4_SESSION_ESTABLISHED, &session->session_state);
	session->flags = res->flags;
	memcpy(&session->fc_attrs, &res->fc_attrs, sizeof(session->fc_attrs));
	if (res->flags & SESSION4_BACK_CHAN)
		memcpy(&session->bc_attrs, &res->bc_attrs,
				sizeof(session->bc_attrs));
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 104 100.00% 3 100.00%
Total 104 100.00% 3 100.00%



static int _nfs4_proc_create_session(struct nfs_client *clp,
		struct rpc_cred *cred)
{
	struct nfs4_session *session = clp->cl_session;
	struct nfs41_create_session_args args = {
		.client = clp,
		.clientid = clp->cl_clientid,
		.seqid = clp->cl_seqid,
		.cb_program = NFS4_CALLBACK,
        };
	struct nfs41_create_session_res res;

	struct rpc_message msg = {
		.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE_SESSION],
		.rpc_argp = &args,
		.rpc_resp = &res,
		.rpc_cred = cred,
        };
	int status;

	nfs4_init_channel_attrs(&args, clp->cl_rpcclient);
	args.flags = (SESSION4_PERSIST | SESSION4_BACK_CHAN);

	status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT);
	trace_nfs4_create_session(clp, status);

	switch (status) {
	case -NFS4ERR_STALE_CLIENTID:
	case -NFS4ERR_DELAY:
	case -ETIMEDOUT:
	case -EACCES:
	case -EAGAIN:
		goto out;
	};

	clp->cl_seqid++;
	if (!status) {
		/* Verify the session's negotiated channel_attrs values */
		status = nfs4_verify_channel_attrs(&args, &res);
		/* Increment the clientid slot sequence id */
		if (status)
			goto out;
		nfs4_update_session(session, &res);
	}
out:
	return status;
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 170 80.19% 7 63.64%
andy adamson andy adamson 38 17.92% 3 27.27%
chuck lever chuck lever 4 1.89% 1 9.09%
Total 212 100.00% 11 100.00%

/*
 * Issues a CREATE_SESSION operation to the server.
 * It is the responsibility of the caller to verify the session is
 * expired before calling this routine.
 */


int nfs4_proc_create_session(struct nfs_client *clp, struct rpc_cred *cred)
{
	int status;
	unsigned *ptr;
	struct nfs4_session *session = clp->cl_session;

	dprintk("--> %s clp=%p session=%p\n", __func__, clp, session);

	status = _nfs4_proc_create_session(clp, cred);
	if (status)
		goto out;

	/* Init or reset the session slot tables */
	status = nfs4_setup_session_slot_tables(session);
	dprintk("slot table setup returned %d\n", status);
	if (status)
		goto out;

	ptr = (unsigned *)&session->sess_id.data[0];
	dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__,
		clp->cl_seqid, ptr[0], ptr[1], ptr[2], ptr[3]);
out:
	dprintk("<-- %s\n", __func__);
	return status;
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 135 97.12% 6 85.71%
alexandros batsakis alexandros batsakis 4 2.88% 1 14.29%
Total 139 100.00% 7 100.00%

/*
 * Issue the over-the-wire RPC DESTROY_SESSION.
 * The caller must serialize access to this routine.
 */


int nfs4_proc_destroy_session(struct nfs4_session *session,
		struct rpc_cred *cred)
{
	struct rpc_message msg = {
		.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DESTROY_SESSION],
		.rpc_argp = session,
		.rpc_cred = cred,
        };
	int status = 0;

	dprintk("--> nfs4_proc_destroy_session\n");

	/* session is still being setup */
	if (!test_and_clear_bit(NFS4_SESSION_ESTABLISHED, &session->session_state))
		return 0;

	status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT);
	trace_nfs4_destroy_session(session->clp, status);

	if (status)
		dprintk("NFS: Got error %d from the server on DESTROY_SESSION. "
			"Session has been destroyed regardless...\n", status);

	dprintk("<-- nfs4_proc_destroy_session\n");
	return status;
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 86 76.79% 4 80.00%
andy adamson andy adamson 26 23.21% 1 20.00%
Total 112 100.00% 5 100.00%

/*
 * Renew the cl_session lease.
 */

struct nfs4_sequence_data {
	
struct nfs_client *clp;
	
struct nfs4_sequence_args args;
	
struct nfs4_sequence_res res;
};



static void nfs41_sequence_release(void *data)
{
	struct nfs4_sequence_data *calldata = data;
	struct nfs_client *clp = calldata->clp;

	if (atomic_read(&clp->cl_count) > 1)
		nfs4_schedule_state_renewal(clp);
	nfs_put_client(clp);
	kfree(calldata);
}

Contributors
Person Tokens Prop Commits CommitProp
alexandros batsakis alexandros batsakis 38 71.70% 2 66.67%
trond myklebust trond myklebust 15 28.30% 1 33.33%
Total 53 100.00% 3 100.00%



static int nfs41_sequence_handle_errors(struct rpc_task *task, struct nfs_client *clp)
{
	switch(task->tk_status) {
	case -NFS4ERR_DELAY:
		rpc_delay(task, NFS4_POLL_RETRY_MAX);
		return -EAGAIN;
	default:
		nfs4_schedule_lease_recovery(clp);
	}
	return 0;
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 48 100.00% 2 100.00%
Total 48 100.00% 2 100.00%



static void nfs41_sequence_call_done(struct rpc_task *task, void *data)
{
	struct nfs4_sequence_data *calldata = data;
	struct nfs_client *clp = calldata->clp;

	if (!nfs41_sequence_done(task, task->tk_msg.rpc_resp))
		return;

	trace_nfs4_sequence(clp, task->tk_status);
	if (task->tk_status < 0) {
		dprintk("%s ERROR %d\n", __func__, task->tk_status);
		if (atomic_read(&clp->cl_count) == 1)
			goto out;

		if (nfs41_sequence_handle_errors(task, clp) == -EAGAIN) {
			rpc_restart_call_prepare(task);
			return;
		}
	}
	dprintk("%s rpc_cred %p\n", __func__, task->tk_msg.rpc_cred);
out:
	dprintk("<-- %s\n", __func__);
}

Contributors
Person Tokens Prop Commits CommitProp
andy adamson andy adamson 87 65.41% 1 14.29%
trond myklebust trond myklebust 28 21.05% 4 57.14%
alexandros batsakis alexandros batsakis 18 13.53% 2 28.57%
Total 133 100.00% 7 100.00%



static void nfs41_sequence_prepare(struct rpc_task *task, void *data)
{
	struct nfs4_sequence_data *calldata = data;
	struct nfs_client *clp = calldata->clp;
	struct nfs4_sequence_args *args;
	struct nfs4_sequence_res *res;

	args = task->tk_msg.rpc_argp;
	res = task->tk_msg.rpc_resp;

	nfs41_setup_sequence(clp->cl_session, args, res, task);
}

Contributors
Person Tokens Prop Commits CommitProp
andy adamson andy adamson 56 80.00% 1 33.33%
trond myklebust trond myklebust 14 20.00% 2 66.67%
Total 70 100.00% 3 100.00%


static const struct rpc_call_ops nfs41_sequence_ops = {
	.rpc_call_done = nfs41_sequence_call_done,
	.rpc_call_prepare = nfs41_sequence_prepare,
	.rpc_release = nfs41_sequence_release,
};



static struct rpc_task *_nfs41_proc_sequence(struct nfs_client *clp,
		struct rpc_cred *cred,
		bool is_privileged)
{
	struct nfs4_sequence_data *calldata;
	struct rpc_message msg = {
		.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SEQUENCE],
		.rpc_cred = cred,
        };
	struct rpc_task_setup task_setup_data = {
		.rpc_client = clp->cl_rpcclient,
		.rpc_message = &msg,
		.callback_ops = &nfs41_sequence_ops,
		.flags = RPC_TASK_ASYNC | RPC_TASK_TIMEOUT,
        };

	if (!atomic_inc_not_zero(&clp->cl_count))
		return ERR_PTR(-EIO);
	calldata = kzalloc(sizeof(*calldata), GFP_NOFS);
	if (calldata == NULL) {
		nfs_put_client(clp);
		return ERR_PTR(-ENOMEM);
	}
	nfs4_init_sequence(&calldata->args, &calldata->res, 0);
	if (is_privileged)
		nfs4_set_sequence_privileged(&calldata->args);
	msg.rpc_argp = &calldata->args;
	msg.rpc_resp = &calldata->res;
	calldata->clp = clp;
	task_setup_data.callback_data = calldata;

	return rpc_run_task(&task_setup_data);
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 103 53.37% 6 54.55%
andy adamson andy adamson 67 34.72% 1 9.09%
alexandros batsakis alexandros batsakis 20 10.36% 1 9.09%
bryan schumaker bryan schumaker 1 0.52% 1 9.09%
chuck lever chuck lever 1 0.52% 1 9.09%
benny halevy benny halevy 1 0.52% 1 9.09%
Total 193 100.00% 11 100.00%



static int nfs41_proc_async_sequence(struct nfs_client *clp, struct rpc_cred *cred, unsigned renew_flags)
{
	struct rpc_task *task;
	int ret = 0;

	if ((renew_flags & NFS4_RENEW_TIMEOUT) == 0)
		return -EAGAIN;
	task = _nfs41_proc_sequence(clp, cred, false);
	if (IS_ERR(task))
		ret = PTR_ERR(task);
	else
		rpc_put_task_async(task);
	dprintk("<-- %s status=%d\n", __func__, ret);
	return ret;
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 78 90.70% 4 57.14%
andy adamson andy adamson 7 8.14% 2 28.57%
bryan schumaker bryan schumaker 1 1.16% 1 14.29%
Total 86 100.00% 7 100.00%



static int nfs4_proc_sequence(struct nfs_client *clp, struct rpc_cred *cred)
{
	struct rpc_task *task;
	int ret;

	task = _nfs41_proc_sequence(clp, cred, true);
	if (IS_ERR(task)) {
		ret = PTR_ERR(task);
		goto out;
	}
	ret = rpc_wait_for_completion_task(task);
	if (!ret)
		ret = task->tk_status;
	rpc_put_task(task);
out:
	dprintk("<-- %s status=%d\n", __func__, ret);
	return ret;
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 86 94.51% 2 50.00%
andy adamson andy adamson 4 4.40% 1 25.00%
bryan schumaker bryan schumaker 1 1.10% 1 25.00%
Total 91 100.00% 4 100.00%


struct nfs4_reclaim_complete_data {
	
struct nfs_client *clp;
	
struct nfs41_reclaim_complete_args arg;
	
struct nfs41_reclaim_complete_res res;
};



static void nfs4_reclaim_complete_prepare(struct rpc_task *task, void *data)
{
	struct nfs4_reclaim_complete_data *calldata = data;

	nfs41_setup_sequence(calldata->clp->cl_session,
			&calldata->arg.seq_args,
			&calldata->res.seq_res,
			task);
}

Contributors
Person Tokens Prop Commits CommitProp
ricardo labiaga ricardo labiaga 44 93.62% 1 50.00%
trond myklebust trond myklebust 3 6.38% 1 50.00%
Total 47 100.00% 2 100.00%



static int nfs41_reclaim_complete_handle_errors(struct rpc_task *task, struct nfs_client *clp)
{
	switch(task->tk_status) {
	case 0:
	case -NFS4ERR_COMPLETE_ALREADY:
	case -NFS4ERR_WRONG_CRED: /* What to do here? */
		break;
	case -NFS4ERR_DELAY:
		rpc_delay(task, NFS4_POLL_RETRY_MAX);
		/* fall through */
	case -NFS4ERR_RETRY_UNCACHED_REP:
		return -EAGAIN;
	default:
		nfs4_schedule_lease_recovery(clp);
	}
	return 0;
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 61 92.42% 2 66.67%
andy adamson andy adamson 5 7.58% 1 33.33%
Total 66 100.00% 3 100.00%



static void nfs4_reclaim_complete_done(struct rpc_task *task, void *data)
{
	struct nfs4_reclaim_complete_data *calldata = data;
	struct nfs_client *clp = calldata->clp;
	struct nfs4_sequence_res *res = &calldata->res.seq_res;

	dprintk("--> %s\n", __func__);
	if (!nfs41_sequence_done(task, res))
		return;

	trace_nfs4_reclaim_complete(clp, task->tk_status);
	if (nfs41_reclaim_complete_handle_errors(task, clp) == -EAGAIN) {
		rpc_restart_call_prepare(task);
		return;
	}
	dprintk("<-- %s\n", __func__);
}

Contributors
Person Tokens Prop Commits CommitProp
ricardo labiaga ricardo labiaga 80 82.47% 1 25.00%
trond myklebust trond myklebust 17 17.53% 3 75.00%
Total 97 100.00% 4 100.00%



static void nfs4_free_reclaim_complete_data(void *data)
{
	struct nfs4_reclaim_complete_data *calldata = data;

	kfree(calldata);
}

Contributors
Person Tokens Prop Commits CommitProp
ricardo labiaga ricardo labiaga 22 100.00% 1 100.00%
Total 22 100.00% 1 100.00%


static const struct rpc_call_ops nfs4_reclaim_complete_call_ops = {
	.rpc_call_prepare = nfs4_reclaim_complete_prepare,
	.rpc_call_done = nfs4_reclaim_complete_done,
	.rpc_release = nfs4_free_reclaim_complete_data,
};

/*
 * Issue a global reclaim complete.
 */


static int nfs41_proc_reclaim_complete(struct nfs_client *clp,
		struct rpc_cred *cred)
{
	struct nfs4_reclaim_complete_data *calldata;
	struct rpc_task *task;
	struct rpc_message msg = {
		.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RECLAIM_COMPLETE],
		.rpc_cred = cred,
        };
	struct rpc_task_setup task_setup_data = {
		.rpc_client = clp->cl_rpcclient,
		.rpc_message = &msg,
		.callback_ops = &nfs4_reclaim_complete_call_ops,
		.flags = RPC_TASK_ASYNC,
        };
	int status = -ENOMEM;

	dprintk("--> %s\n", __func__);
	calldata = kzalloc(sizeof(*calldata), GFP_NOFS);
	if (calldata == NULL)
		goto out;
	calldata->clp = clp;
	calldata->arg.one_fs = 0;

	nfs4_init_sequence(&calldata->arg.seq_args, &calldata->res.seq_res, 0);
	nfs4_set_sequence_privileged(&calldata->arg.seq_args);
	msg.rpc_argp = &calldata->arg;
	msg.rpc_resp = &calldata->res;
	task_setup_data.callback_data = calldata;
	task = rpc_run_task(&task_setup_data);
	if (IS_ERR(task)) {
		status = PTR_ERR(task);
		goto out;
	}
	status = nfs4_wait_for_completion_rpc_task(task);
	if (status == 0)
		status = task->tk_status;
	rpc_put_task(task);
	return 0;
out:
	dprintk("<-- %s status=%d\n", __func__, status);
	return status;
}

Contributors
Person Tokens Prop Commits CommitProp
ricardo labiaga ricardo labiaga 179 72.76% 1 12.50%
trond myklebust trond myklebust 39 15.85% 4 50.00%
andy adamson andy adamson 19 7.72% 1 12.50%
dan carpenter dan carpenter 8 3.25% 1 12.50%
chuck lever chuck lever 1 0.41% 1 12.50%
Total 246 100.00% 8 100.00%


static void

nfs4_layoutget_prepare(struct rpc_task *task, void *calldata)
{
	struct nfs4_layoutget *lgp = calldata;
	struct nfs_server *server = NFS_SERVER(lgp->args.inode);
	struct nfs4_session *session = nfs4_get_session(server);

	dprintk("--> %s\n", __func__);
	nfs41_setup_sequence(session, &lgp->args.seq_args,
				&lgp->res.seq_res, task);
	dprintk("<-- %s\n", __func__);
}

Contributors
Person Tokens Prop Commits CommitProp
andy adamson andy adamson 56 69.14% 1 16.67%
trond myklebust trond myklebust 13 16.05% 2 33.33%
fred isaman fred isaman 9 11.11% 2 33.33%
jeff layton jeff layton 3 3.70% 1 16.67%
Total 81 100.00% 6 100.00%



static void nfs4_layoutget_done(struct rpc_task *task, void *calldata)
{
	struct nfs4_layoutget *lgp = calldata;

	dprintk("--> %s\n", __func__);
	nfs41_sequence_process(task, &lgp->res.seq_res);
	dprintk("<-- %s\n", __func__);
}

Contributors
Person Tokens Prop Commits CommitProp
jeff layton jeff layton 26 54.17% 1 33.33%
andy adamson andy adamson 21 43.75% 1 33.33%
trond myklebust trond myklebust 1 2.08% 1 33.33%
Total 48 100.00% 3 100.00%


static int

nfs4_layoutget_handle_exception(struct rpc_task *task,
		struct nfs4_layoutget *lgp, struct nfs4_exception *exception)
{
	struct inode *inode = lgp->args.inode;
	struct nfs_server *server = NFS_SERVER(inode);
	struct pnfs_layout_hdr *lo;
	int nfs4err = task->tk_status;
	int err, status = 0;
	LIST_HEAD(head);

	dprintk("--> %s tk_status => %d\n", __func__, -task->tk_status);

	switch (nfs4err) {
	case 0:
		goto out;

	/*
         * NFS4ERR_LAYOUTUNAVAILABLE means we are not supposed to use pnfs
         * on the file. set tk_status to -ENODATA to tell upper layer to
         * retry go inband.
         */
	case -NFS4ERR_LAYOUTUNAVAILABLE:
		status = -ENODATA;
		goto out;
	/*
         * NFS4ERR_BADLAYOUT means the MDS cannot return a layout of
         * length lgp->args.minlength != 0 (see RFC5661 section 18.43.3).
         */
	case -NFS4ERR_BADLAYOUT:
		status = -EOVERFLOW;
		goto out;
	/*
         * NFS4ERR_LAYOUTTRYLATER is a conflict with another client
         * (or clients) writing to the same RAID stripe except when
         * the minlength argument is 0 (see RFC5661 section 18.43.3).
         *
         * Treat it like we would RECALLCONFLICT -- we retry for a little
         * while, and then eventually give up.
         */
	case -NFS4ERR_LAYOUTTRYLATER:
		if (lgp->args.minlength == 0) {
			status = -EOVERFLOW;
			goto out;
		}
		status = -EBUSY;
		break;
	case -NFS4ERR_RECALLCONFLICT:
		status = -ERECALLCONFLICT;
		break;
	case -NFS4ERR_DELEG_REVOKED:
	case -NFS4ERR_ADMIN_REVOKED:
	case -NFS4ERR_EXPIRED:
	case -NFS4ERR_BAD_STATEID:
		exception->timeout = 0;
		spin_lock(&inode->i_lock);
		lo = NFS_I(inode)->layout;
		/* If the open stateid was bad, then recover it. */
		if (!lo || test_bit(NFS_LAYOUT_INVALID_STID, &lo->plh_flags) ||
		    nfs4_stateid_match_other(&lgp->args.stateid,
					&lgp->args.ctx->state->stateid)) {
			spin_unlock(&inode->i_lock);
			exception->state = lgp->args.ctx->state;
			exception->stateid = &lgp->args.stateid;
			break;
		}

		/*
                 * Mark the bad layout state as invalid, then retry
                 */
		pnfs_mark_layout_stateid_invalid(lo, &head);
		spin_unlock(&inode->i_lock);
		pnfs_free_lseg_list(&head);
		status = -EAGAIN;
		goto out;
	}

	nfs4_sequence_free_slot(&lgp->res.seq_res);
	err = nfs4_handle_exception(server, nfs4err, exception);
	if (!status) {
		if (exception->retry)
			status = -EAGAIN;
		else
			status = err;
	}
out:
	dprintk("<-- %s\n", __func__);
	return status;
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 220 62.15% 9 60.00%
jeff layton jeff layton 68 19.21% 1 6.67%
andy adamson andy adamson 45 12.71% 1 6.67%
peng tao peng tao 12 3.39% 1 6.67%
boaz harrosh boaz harrosh 7 1.98% 1 6.67%
neil brown neil brown 1 0.28% 1 6.67%
weston andros adamson weston andros adamson 1 0.28% 1 6.67%
Total 354 100.00% 15 100.00%



static size_t max_response_pages(struct nfs_server *server)
{
	u32 max_resp_sz = server->nfs_client->cl_session->fc_attrs.max_resp_sz;
	return nfs_page_array_len(0, max_resp_sz);
}

Contributors
Person Tokens Prop Commits CommitProp
idan kedar idan kedar 32 100.00% 1 100.00%
Total 32 100.00% 1 100.00%



static void nfs4_free_pages(struct page **pages, size_t size)
{
	int i;

	if (!pages)
		return;

	for (i = 0; i < size; i++) {
		if (!pages[i])
			break;
		__free_page(pages[i]);
	}
	kfree(pages);
}

Contributors
Person Tokens Prop Commits CommitProp
idan kedar idan kedar 61 100.00% 1 100.00%
Total 61 100.00% 1 100.00%



static struct page **nfs4_alloc_pages(size_t size, gfp_t gfp_flags)
{
	struct page **pages;
	int i;

	pages = kcalloc(size, sizeof(struct page *), gfp_flags);
	if (!pages) {
		dprintk("%s: can't alloc array of %zu pages\n", __func__, size);
		return NULL;
	}

	for (i = 0; i < size; i++) {
		pages[i] = alloc_page(gfp_flags);
		if (!pages[i]) {
			dprintk("%s: failed to allocate page\n", __func__);
			nfs4_free_pages(pages, size);
			return NULL;
		}
	}

	return pages;
}

Contributors
Person Tokens Prop Commits CommitProp
idan kedar idan kedar 114 100.00% 1 100.00%
Total 114 100.00% 1 100.00%



static void nfs4_layoutget_release(void *calldata)
{
	struct nfs4_layoutget *lgp = calldata;
	struct inode *inode = lgp->args.inode;
	struct nfs_server *server = NFS_SERVER(inode);
	size_t max_pages = max_response_pages(server);

	dprintk("--> %s\n", __func__);
	nfs4_free_pages(lgp->args.layout.pages, max_pages);
	pnfs_put_layout_hdr(NFS_I(inode)->layout);
	put_nfs_open_context(lgp->args.ctx);
	kfree(calldata);
	dprintk("<-- %s\n", __func__);
}

Contributors
Person Tokens Prop Commits CommitProp
andy adamson andy adamson 45 46.39% 1 33.33%
idan kedar idan kedar 31 31.96% 1 33.33%
weston andros adamson weston andros adamson 21 21.65% 1 33.33%
Total 97 100.00% 3 100.00%


static const struct rpc_call_ops nfs4_layoutget_call_ops = {
	.rpc_call_prepare = nfs4_layoutget_prepare,
	.rpc_call_done = nfs4_layoutget_done,
	.rpc_release = nfs4_layoutget_release,
};


struct pnfs_layout_segment *

nfs4_proc_layoutget(struct nfs4_layoutget *lgp, long *timeout, gfp_t gfp_flags)
{
	struct inode *inode = lgp->args.inode;
	struct nfs_server *server = NFS_SERVER(inode);
	size_t max_pages = max_response_pages(server);
	struct rpc_task *task;
	struct rpc_message msg = {
		.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTGET],
		.rpc_argp = &lgp->args,
		.rpc_resp = &lgp->res,
		.rpc_cred = lgp->cred,
        };
	struct rpc_task_setup task_setup_data = {
		.rpc_client = server->client,
		.rpc_message = &msg,
		.callback_ops = &nfs4_layoutget_call_ops,
		.callback_data = lgp,
		.flags = RPC_TASK_ASYNC,
        };
	struct pnfs_layout_segment *lseg = NULL;
	struct nfs4_exception exception = {
		.inode = inode,
		.timeout = *timeout,
        };
	int status = 0;

	dprintk("--> %s\n", __func__);

	/* nfs4_layoutget_release calls pnfs_put_layout_hdr */
	pnfs_get_layout_hdr(NFS_I(inode)->layout);

	lgp->args.layout.pages = nfs4_alloc_pages(max_pages, gfp_flags);
	if (!lgp->args.layout.pages) {
		nfs4_layoutget_release(lgp);
		return ERR_PTR(-ENOMEM);
	}
	lgp->args.layout.pglen = max_pages * PAGE_SIZE;

	lgp->res.layoutp = &lgp->args.layout;
	lgp->res.seq_res.sr_slot = NULL;
	nfs4_init_sequence(&lgp->args.seq_args, &lgp->res.seq_res, 0);

	task = rpc_run_task(&task_setup_data);
	if (IS_ERR(task))
		return ERR_CAST(task);
	status = nfs4_wait_for_completion_rpc_task(task);
	if (status == 0) {
		status = nfs4_layoutget_handle_exception(task, lgp, &exception);
		*timeout = exception.timeout;
	}

	trace_nfs4_layoutget(lgp->args.ctx,
			&lgp->args.range,
			&lgp->res.range,
			&lgp->res.stateid,
			status);

	/* if layoutp->len is 0, nfs4_layoutget_prepare called rpc_exit */
	if (status == 0 && lgp->res.layoutp->len)
		lseg = pnfs_layout_process(lgp);
	nfs4_sequence_free_slot(&lgp->res.seq_res);
	rpc_put_task(task);
	dprintk("<-- %s status=%d\n", __func__, status);
	if (status)
		return ERR_PTR(status);
	return lseg;
}

Contributors
Person Tokens Prop Commits CommitProp
andy adamson andy adamson 177 42.86% 1 5.88%
trond myklebust trond myklebust 103 24.94% 6 35.29%
idan kedar idan kedar 56 13.56% 1 5.88%
jeff layton jeff layton 32 7.75% 1 5.88%
weston andros adamson weston andros adamson 23 5.57% 3 17.65%
peng tao peng tao 11 2.66% 1 5.88%
olga kornievskaia olga kornievskaia 7 1.69% 1 5.88%
fred isaman fred isaman 3 0.73% 2 11.76%
chuck lever chuck lever 1 0.24% 1 5.88%
Total 413 100.00% 17 100.00%


static void

nfs4_layoutreturn_prepare(struct rpc_task *task, void *calldata)
{
	struct nfs4_layoutreturn *lrp = calldata;

	dprintk("--> %s\n", __func__);
	nfs41_setup_sequence(lrp->clp->cl_session,
			&lrp->args.seq_args,
			&lrp->res.seq_res,
			task);
}

Contributors
Person Tokens Prop Commits CommitProp
benny halevy benny halevy 53 98.15% 1 50.00%
andy adamson andy adamson 1 1.85% 1 50.00%
Total 54 100.00% 2 100.00%



static void nfs4_layoutreturn_done(struct rpc_task *task, void *calldata)
{
	struct nfs4_layoutreturn *lrp = calldata;
	struct nfs_server *server;

	dprintk("--> %s\n", __func__);

	if (!nfs41_sequence_process(task, &lrp->res.seq_res))
		return;

	server = NFS_SERVER(lrp->args.inode);
	switch (task->tk_status) {
	default:
		task->tk_status = 0;
	case 0:
		break;
	case -NFS4ERR_DELAY:
		if (nfs4_async_handle_error(task, server, NULL, NULL) != -EAGAIN)
			break;
		nfs4_sequence_free_slot(&lrp->res.seq_res);
		rpc_restart_call_prepare(task);
		return;
	}
	dprintk("<-- %s\n", __func__);
}

Contributors
Person Tokens Prop Commits CommitProp
benny halevy benny halevy 78 62.90% 1 16.67%
trond myklebust trond myklebust 44 35.48% 4 66.67%
neil brown neil brown 2 1.61% 1 16.67%
Total 124 100.00% 6 100.00%



static void nfs4_layoutreturn_release(void *calldata)
{
	struct nfs4_layoutreturn *lrp = calldata;
	struct pnfs_layout_hdr *lo = lrp->args.layout;

	dprintk("--> %s\n", __func__);
	pnfs_layoutreturn_free_lsegs(lo, &lrp->args.stateid, &lrp->args.range,
			lrp->res.lrs_present ? &lrp->res.stateid : NULL);
	nfs4_sequence_free_slot(&lrp->res.seq_res);
	if (lrp->ld_private.ops && lrp->ld_private.ops->free)
		lrp->ld_private.ops->free(&lrp->ld_private);
	pnfs_put_layout_hdr(lrp->args.layout);
	nfs_iput_and_deactive(lrp->inode);
	kfree(calldata);
	dprintk("<-- %s\n", __func__);
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 110 80.29% 7 70.00%
benny halevy benny halevy 18 13.14% 1 10.00%
jeff layton jeff layton 5 3.65% 1 10.00%
fred isaman fred isaman 4 2.92% 1 10.00%
Total 137 100.00% 10 100.00%


static const struct rpc_call_ops nfs4_layoutreturn_call_ops = {
	.rpc_call_prepare = nfs4_layoutreturn_prepare,
	.rpc_call_done = nfs4_layoutreturn_done,
	.rpc_release = nfs4_layoutreturn_release,
};



int nfs4_proc_layoutreturn(struct nfs4_layoutreturn *lrp, bool sync)
{
	struct rpc_task *task;
	struct rpc_message msg = {
		.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTRETURN],
		.rpc_argp = &lrp->args,
		.rpc_resp = &lrp->res,
		.rpc_cred = lrp->cred,
        };
	struct rpc_task_setup task_setup_data = {
		.rpc_client = NFS_SERVER(lrp->args.inode)->client,
		.rpc_message = &msg,
		.callback_ops = &nfs4_layoutreturn_call_ops,
		.callback_data = lrp,
        };
	int status = 0;

	nfs4_state_protect(NFS_SERVER(lrp->args.inode)->nfs_client,
			NFS_SP4_MACH_CRED_PNFS_CLEANUP,
			&task_setup_data.rpc_client, &msg);

	dprintk("--> %s\n", __func__);
	if (!sync) {
		lrp->inode = nfs_igrab_and_active(lrp->args.inode);
		if (!lrp->inode) {
			nfs4_layoutreturn_release(lrp);
			return -EAGAIN;
		}
		task_setup_data.flags |= RPC_TASK_ASYNC;
	}
	nfs4_init_sequence(&lrp->args.seq_args, &lrp->res.seq_res, 1);
	task = rpc_run_task(&task_setup_data);
	if (IS_ERR(task))
		return PTR_ERR(task);
	if (sync)
		status = task->tk_status;
	trace_nfs4_layoutreturn(lrp->args.inode, &lrp->args.stateid, status);
	dprintk("<-- %s status=%d\n", __func__, status);
	rpc_put_task(task);
	return status;
}

Contributors
Person Tokens Prop Commits CommitProp
benny halevy benny halevy 130 50.39% 1 10.00%
trond myklebust trond myklebust 80 31.01% 4 40.00%
andrew elble andrew elble 24 9.30% 1 10.00%
peng tao peng tao 9 3.49% 1 10.00%
andy adamson andy adamson 7 2.71% 1 10.00%
olga kornievskaia olga kornievskaia 7 2.71% 1 10.00%
chuck lever chuck lever 1 0.39% 1 10.00%
Total 258 100.00% 10 100.00%


static int

_nfs4_proc_getdeviceinfo(struct nfs_server *server,
		struct pnfs_device *pdev,
		struct rpc_cred *cred)
{
	struct nfs4_getdeviceinfo_args args = {
		.pdev = pdev,
		.notify_types = NOTIFY_DEVICEID4_CHANGE |
			NOTIFY_DEVICEID4_DELETE,
        };
	struct nfs4_getdeviceinfo_res res = {
		.pdev = pdev,
        };
	struct rpc_message msg = {
		.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETDEVICEINFO],
		.rpc_argp = &args,
		.rpc_resp = &res,
		.rpc_cred = cred,
        };
	int status;

	dprintk("--> %s\n", __func__);
	status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0);
	if (res.notification & ~args.notify_types)
		dprintk("%s: unsupported notification\n", __func__);
	if (res.notification != args.notify_types)
		pdev->nocache = 1;

	dprintk("<-- %s status=%d\n", __func__, status);

	return status;
}

Contributors
Person Tokens Prop Commits CommitProp
andy adamson andy adamson 104 63.41% 1 14.29%
trond myklebust trond myklebust 51 31.10% 3 42.86%
bryan schumaker bryan schumaker 8 4.88% 2 28.57%
benny halevy benny halevy 1 0.61% 1 14.29%
Total 164 100.00% 7 100.00%



int nfs4_proc_getdeviceinfo(struct nfs_server *server,
		struct pnfs_device *pdev,
		struct rpc_cred *cred)
{
	struct nfs4_exception exception = { };
	int err;

	do {
		err = nfs4_handle_exception(server,
					_nfs4_proc_getdeviceinfo(server, pdev, cred),
					&exception);
	} while (exception.retry);
	return err;
}
Contributors
Person Tokens Prop Commits CommitProp
andy adamson andy adamson 54 88.52% 1 50.00%
trond myklebust trond myklebust 7 11.48% 1 50.00%
Total 61 100.00% 2 100.00%


EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo);



static void nfs4_layoutcommit_prepare(struct rpc_task *task, void *calldata)
{
	struct nfs4_layoutcommit_data *data = calldata;
	struct nfs_server *server = NFS_SERVER(data->args.inode);
	struct nfs4_session *session = nfs4_get_session(server);

	nfs41_setup_sequence(session,
			&data->args.seq_args,
			&data->res.seq_res,
			task);
}

Contributors
Person Tokens Prop Commits CommitProp
andy adamson andy adamson 55 82.09% 1 50.00%
trond myklebust trond myklebust 12 17.91% 1 50.00%
Total 67 100.00% 2 100.00%


static void

nfs4_layoutcommit_done(struct rpc_task *task, void *calldata)
{
	struct nfs4_layoutcommit_data *data = calldata;
	struct nfs_server *server = NFS_SERVER(data->args.inode);

	if (!nfs41_sequence_done(task, &data->res.seq_res))
		return;

	switch (task->tk_status) { /* Just ignore these failures */
	case -NFS4ERR_DELEG_REVOKED: /* layout was recalled */
	case -NFS4ERR_BADIOMODE:     /* no IOMODE_RW layout for range */
	case -NFS4ERR_BADLAYOUT:     /* no layout */
	case -NFS4ERR_GRACE:	    /* loca_recalim always false */
		task->tk_status = 0;
	case 0:
		break;
	default:
		if (nfs4_async_handle_error(task, server, NULL, NULL) == -EAGAIN) {
			rpc_restart_call_prepare(task);
			return;
		}
	}
}

Contributors
Person Tokens Prop Commits CommitProp
andy adamson andy adamson 102 87.93% 1 20.00%
trond myklebust trond myklebust 12 10.34% 3 60.00%
neil brown neil brown 2 1.72% 1 20.00%
Total 116 100.00% 5 100.00%



static void nfs4_layoutcommit_release(void *calldata)
{
	struct nfs4_layoutcommit_data *data = calldata;

	pnfs_cleanup_layoutcommit(data);
	nfs_post_op_update_inode_force_wcc(data->args.inode,
					   data->res.fattr);
	put_rpccred(data->cred);
	nfs_iput_and_deactive(data->inode);
	kfree(data);
}

Contributors
Person Tokens Prop Commits CommitProp
andy adamson andy adamson 34 60.71% 2 50.00%
trond myklebust trond myklebust 22 39.29% 2 50.00%
Total 56 100.00% 4 100.00%


static const struct rpc_call_ops nfs4_layoutcommit_ops = {
	.rpc_call_prepare = nfs4_layoutcommit_prepare,
	.rpc_call_done = nfs4_layoutcommit_done,
	.rpc_release = nfs4_layoutcommit_release,
};


int

nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data *data, bool sync)
{
	struct rpc_message msg = {
		.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTCOMMIT],
		.rpc_argp = &data->args,
		.rpc_resp = &data->res,
		.rpc_cred = data->cred,
        };
	struct rpc_task_setup task_setup_data = {
		.task = &data->task,
		.rpc_client = NFS_CLIENT(data->args.inode),
		.rpc_message = &msg,
		.callback_ops = &nfs4_layoutcommit_ops,
		.callback_data = data,
        };
	struct rpc_task *task;
	int status = 0;

	dprintk("NFS: initiating layoutcommit call. sync %d "
		"lbw: %llu inode %lu\n", sync,
		data->args.lastbytewritten,
		data->args.inode->i_ino);

	if (!sync) {
		data->inode = nfs_igrab_and_active(data->args.inode);
		if (data->inode == NULL) {
			nfs4_layoutcommit_release(data);
			return -EAGAIN;
		}
		task_setup_data.flags = RPC_TASK_ASYNC;
	}
	nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 1);
	task = rpc_run_task(&task_setup_data);
	if (IS_ERR(task))
		return PTR_ERR(task);
	if (sync)
		status = task->tk_status;
	trace_nfs4_layoutcommit(data->args.inode, &data->args.stateid, status);
	dprintk("%s: status %d\n", __func__, status);
	rpc_put_task(task);
	return status;
}

Contributors
Person Tokens Prop Commits CommitProp
andy adamson andy adamson 173 67.58% 2 25.00%
trond myklebust trond myklebust 74 28.91% 3 37.50%
olga kornievskaia olga kornievskaia 7 2.73% 1 12.50%
kinglong mee kinglong mee 1 0.39% 1 12.50%
chuck lever chuck lever 1 0.39% 1 12.50%
Total 256 100.00% 8 100.00%

/**
 * Use the state managment nfs_client cl_rpcclient, which uses krb5i (if
 * possible) as per RFC3530bis and RFC5661 Security Considerations sections
 */

static int

_nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle,
		    struct nfs_fsinfo *info,
		    struct nfs4_secinfo_flavors *flavors, bool use_integrity)
{
	struct nfs41_secinfo_no_name_args args = {
		.style = SECINFO_STYLE_CURRENT_FH,
        };
	struct nfs4_secinfo_res res = {
		.flavors = flavors,
        };
	struct rpc_message msg = {
		.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO_NO_NAME],
		.rpc_argp = &args,
		.rpc_resp = &res,
        };
	struct rpc_clnt *clnt = server->client;
	struct rpc_cred *cred = NULL;
	int status;

	if (use_integrity) {
		clnt = server->nfs_client->cl_rpcclient;
		cred = nfs4_get_clid_cred(server->nfs_client);
		msg.rpc_cred = cred;
	}

	dprintk("--> %s\n", __func__);
	status = nfs4_call_sync(clnt, server, &msg, &args.seq_args,
				&res.seq_res, 0);
	dprintk("<-- %s status=%d\n", __func__, status);

	if (cred)
		put_rpccred(cred);

	return status;
}

Contributors
Person Tokens Prop Commits CommitProp
bryan schumaker bryan schumaker 99 55.62% 1 25.00%
weston andros adamson weston andros adamson 76 42.70% 2 50.00%
andy adamson andy adamson 3 1.69% 1 25.00%
Total 178 100.00% 4 100.00%


static int

nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle,
			   struct nfs_fsinfo *info, struct nfs4_secinfo_flavors *flavors)
{
	struct nfs4_exception exception = { };
	int err;
	do {
		/* first try using integrity protection */
		err = -NFS4ERR_WRONGSEC;

		/* try to use integrity protection with machine cred */
		if (_nfs4_is_integrity_protected(server->nfs_client))
			err = _nfs41_proc_secinfo_no_name(server, fhandle, info,
							  flavors, true);

		/*
                 * if unable to use integrity protection, or SECINFO with
                 * integrity protection returns NFS4ERR_WRONGSEC (which is
                 * disallowed by spec, but exists in deployed servers) use
                 * the current filesystem's rpc_client and the user cred.
                 */
		if (err == -NFS4ERR_WRONGSEC)
			err = _nfs41_proc_secinfo_no_name(server, fhandle, info,
							  flavors, false);

		switch (err) {
		case 0:
		case -NFS4ERR_WRONGSEC:
		case -ENOTSUPP:
			goto out;
		default:
			err = nfs4_handle_exception(server, err, &exception);
		}
	} while (exception.retry);
out:
	return err;
}

Contributors
Person Tokens Prop Commits CommitProp
bryan schumaker bryan schumaker 101 73.72% 1 25.00%
weston andros adamson weston andros adamson 31 22.63% 2 50.00%
trond myklebust trond myklebust 5 3.65% 1 25.00%
Total 137 100.00% 4 100.00%


static int

nfs41_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle,
		    struct nfs_fsinfo *info)
{
	int err;
	struct page *page;
	rpc_authflavor_t flavor = RPC_AUTH_MAXFLAVOR;
	struct nfs4_secinfo_flavors *flavors;
	struct nfs4_secinfo4 *secinfo;
	int i;

	page = alloc_page(GFP_KERNEL);
	if (!page) {
		err = -ENOMEM;
		goto out;
	}

	flavors = page_address(page);
	err = nfs41_proc_secinfo_no_name(server, fhandle, info, flavors);

	/*
         * Fall back on "guess and check" method if
         * the server doesn't support SECINFO_NO_NAME
         */
	if (err == -NFS4ERR_WRONGSEC || err == -ENOTSUPP) {
		err = nfs4_find_root_sec(server, fhandle, info);
		goto out_freepage;
	}
	if (err)
		goto out_freepage;

	for (i = 0; i < flavors->num_flavors; i++) {
		secinfo = &flavors->flavors[i];

		switch (secinfo->flavor) {
		case RPC_AUTH_NULL:
		case RPC_AUTH_UNIX:
		case RPC_AUTH_GSS:
			flavor = rpcauth_get_pseudoflavor(secinfo->flavor,
					&secinfo->flavor_info);
			break;
		default:
			flavor = RPC_AUTH_MAXFLAVOR;
			break;
		}

		if (!nfs_auth_info_match(&server->auth_info, flavor))
			flavor = RPC_AUTH_MAXFLAVOR;

		if (flavor != RPC_AUTH_MAXFLAVOR) {
			err = nfs4_lookup_root_sec(server, fhandle,
						   info, flavor);
			if (!err)
				break;
		}
	}

	if (flavor == RPC_AUTH_MAXFLAVOR)
		err = -EPERM;

out_freepage:
	put_page(page);
	if (err == -EACCES)
		return -EPERM;
out:
	return err;
}

Contributors
Person Tokens Prop Commits CommitProp
bryan schumaker bryan schumaker 158 58.96% 1 20.00%
weston andros adamson weston andros adamson 108 40.30% 3 60.00%
anna schumaker (different from bryan) anna schumaker (different from bryan) 2 0.75% 1 20.00%
Total 268 100.00% 5 100.00%



static int _nfs41_test_stateid(struct nfs_server *server,
		nfs4_stateid *stateid,
		struct rpc_cred *cred)
{
	int status;
	struct nfs41_test_stateid_args args = {
		.stateid = stateid,
        };
	struct nfs41_test_stateid_res res;
	struct rpc_message msg = {
		.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_TEST_STATEID],
		.rpc_argp = &args,
		.rpc_resp = &res,
		.rpc_cred = cred,
        };
	struct rpc_clnt *rpc_client = server->client;

	nfs4_state_protect(server->nfs_client, NFS_SP4_MACH_CRED_STATEID,
		&rpc_client, &msg);

	dprintk("NFS call  test_stateid %p\n", stateid);
	nfs4_init_sequence(&args.seq_args, &res.seq_res, 0);
	nfs4_set_sequence_privileged(&args.seq_args);
	status = nfs4_call_sync_sequence(rpc_client, server, &msg,
			&args.seq_args, &res.seq_res);
	if (status != NFS_OK) {
		dprintk("NFS reply test_stateid: failed, %d\n", status);
		return status;
	}
	dprintk("NFS reply test_stateid: succeeded, %d\n", -res.status);
	return -res.status;
}

Contributors
Person Tokens Prop Commits CommitProp
bryan schumaker bryan schumaker 99 55.00% 2 22.22%
chuck lever chuck lever 31 17.22% 3 33.33%
weston andros adamson weston andros adamson 25 13.89% 1 11.11%
trond myklebust trond myklebust 25 13.89% 3 33.33%
Total 180 100.00% 9 100.00%



static void nfs4_handle_delay_or_session_error(struct nfs_server *server,
		int err, struct nfs4_exception *exception)
{
	exception->retry = 0;
	switch(err) {
	case -NFS4ERR_DELAY:
	case -NFS4ERR_RETRY_UNCACHED_REP:
		nfs4_handle_exception(server, err, exception);
		break;
	case -NFS4ERR_BADSESSION:
	case -NFS4ERR_BADSLOT:
	case -NFS4ERR_BAD_HIGH_SLOT:
	case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION:
	case -NFS4ERR_DEADSESSION:
		nfs4_do_handle_exception(server, err, exception);
	}
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 78 100.00% 2 100.00%
Total 78 100.00% 2 100.00%

/**
 * nfs41_test_stateid - perform a TEST_STATEID operation
 *
 * @server: server / transport on which to perform the operation
 * @stateid: state ID to test
 * @cred: credential
 *
 * Returns NFS_OK if the server recognizes that "stateid" is valid.
 * Otherwise a negative NFS4ERR value is returned if the operation
 * failed or the state ID is not currently valid.
 */


static int nfs41_test_stateid(struct nfs_server *server,
		nfs4_stateid *stateid,
		struct rpc_cred *cred)
{
	struct nfs4_exception exception = { };
	int err;
	do {
		err = _nfs41_test_stateid(server, stateid, cred);
		nfs4_handle_delay_or_session_error(server, err, &exception);
	} while (exception.retry);
	return err;
}

Contributors
Person Tokens Prop Commits CommitProp
bryan schumaker bryan schumaker 50 79.37% 2 40.00%
trond myklebust trond myklebust 8 12.70% 2 40.00%
chuck lever chuck lever 5 7.94% 1 20.00%
Total 63 100.00% 5 100.00%


struct nfs_free_stateid_data {
	
struct nfs_server *server;
	
struct nfs41_free_stateid_args args;
	
struct nfs41_free_stateid_res res;
};



static void nfs41_free_stateid_prepare(struct rpc_task *task, void *calldata)
{
	struct nfs_free_stateid_data *data = calldata;
	nfs41_setup_sequence(nfs4_get_session(data->server),
			&data->args.seq_args,
			&data->res.seq_res,
			task);
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 38 79.17% 1 50.00%
bryan schumaker bryan schumaker 10 20.83% 1 50.00%
Total 48 100.00% 2 100.00%



static void nfs41_free_stateid_done(struct rpc_task *task, void *calldata)
{
	struct nfs_free_stateid_data *data = calldata;

	nfs41_sequence_done(task, &data->res.seq_res);

	switch (task->tk_status) {
	case -NFS4ERR_DELAY:
		if (nfs4_async_handle_error(task, data->server, NULL, NULL) == -EAGAIN)
			rpc_restart_call_prepare(task);
	}
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 67 97.10% 1 50.00%
neil brown neil brown 2 2.90% 1 50.00%
Total 69 100.00% 2 100.00%



static void nfs41_free_stateid_release(void *calldata)
{
	kfree(calldata);
}

Contributors
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trond myklebust trond myklebust 15 100.00% 1 100.00%
Total 15 100.00% 1 100.00%


static const struct rpc_call_ops nfs41_free_stateid_ops = {
	.rpc_call_prepare = nfs41_free_stateid_prepare,
	.rpc_call_done = nfs41_free_stateid_done,
	.rpc_release = nfs41_free_stateid_release,
};



static struct rpc_task *_nfs41_free_stateid(struct nfs_server *server,
		const nfs4_stateid *stateid,
		struct rpc_cred *cred,
		bool privileged)
{
	struct rpc_message msg = {
		.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FREE_STATEID],
		.rpc_cred = cred,
        };
	struct rpc_task_setup task_setup = {
		.rpc_client = server->client,
		.rpc_message = &msg,
		.callback_ops = &nfs41_free_stateid_ops,
		.flags = RPC_TASK_ASYNC,
        };
	struct nfs_free_stateid_data *data;

	nfs4_state_protect(server->nfs_client, NFS_SP4_MACH_CRED_STATEID,
		&task_setup.rpc_client, &msg);

	dprintk("NFS call  free_stateid %p\n", stateid);
	data = kmalloc(sizeof(*data), GFP_NOFS);
	if (!data)
		return ERR_PTR(-ENOMEM);
	data->server = server;
	nfs4_stateid_copy(&data->args.stateid, stateid);

	task_setup.callback_data = data;

	msg.rpc_argp = &data->args;
	msg.rpc_resp = &data->res;
	nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 1);
	if (privileged)
		nfs4_set_sequence_privileged(&data->args.seq_args);

	return rpc_run_task(&task_setup);
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 141 66.51% 6 60.00%
bryan schumaker bryan schumaker 39 18.40% 1 10.00%
weston andros adamson weston andros adamson 17 8.02% 1 10.00%
chuck lever chuck lever 15 7.08% 2 20.00%
Total 212 100.00% 10 100.00%

/**
 * nfs41_free_stateid - perform a FREE_STATEID operation
 *
 * @server: server / transport on which to perform the operation
 * @stateid: state ID to release
 * @cred: credential
 * @is_recovery: set to true if this call needs to be privileged
 *
 * Note: this function is always asynchronous.
 */


static int nfs41_free_stateid(struct nfs_server *server,
		const nfs4_stateid *stateid,
		struct rpc_cred *cred,
		bool is_recovery)
{
	struct rpc_task *task;

	task = _nfs41_free_stateid(server, stateid, cred, is_recovery);
	if (IS_ERR(task))
		return PTR_ERR(task);
	rpc_put_task(task);
	return 0;
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 33 52.38% 3 50.00%
bryan schumaker bryan schumaker 25 39.68% 2 33.33%
chuck lever chuck lever 5 7.94% 1 16.67%
Total 63 100.00% 6 100.00%


static void

nfs41_free_lock_state(struct nfs_server *server, struct nfs4_lock_state *lsp)
{
	struct rpc_cred *cred = lsp->ls_state->owner->so_cred;

	nfs41_free_stateid(server, &lsp->ls_stateid, cred, false);
	nfs4_free_lock_state(server, lsp);
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 49 98.00% 3 75.00%
jeff layton jeff layton 1 2.00% 1 25.00%
Total 50 100.00% 4 100.00%



static bool nfs41_match_stateid(const nfs4_stateid *s1,
		const nfs4_stateid *s2)
{
	if (s1->type != s2->type)
		return false;

	if (memcmp(s1->other, s2->other, sizeof(s1->other)) != 0)
		return false;

	if (s1->seqid == s2->seqid)
		return true;
	if (s1->seqid == 0 || s2->seqid == 0)
		return true;

	return false;
}

Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 87 100.00% 2 100.00%
Total 87 100.00% 2 100.00%

#endif /* CONFIG_NFS_V4_1 */



static bool nfs4_match_stateid(const nfs4_stateid *s1,
		const nfs4_stateid *s2)
{
	return nfs4_stateid_match(s1, s2);
}


Contributors
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trond myklebust trond myklebust 24 100.00% 2 100.00%
Total 24 100.00% 2 100.00%


static const struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops = {
	.owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT,
	.state_flag_bit	= NFS_STATE_RECLAIM_REBOOT,
	.recover_open	= nfs4_open_reclaim,
	.recover_lock	= nfs4_lock_reclaim,
	.establish_clid = nfs4_init_clientid,
	.detect_trunking = nfs40_discover_server_trunking,
};

#if defined(CONFIG_NFS_V4_1)

static const struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops = {
	.owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT,
	.state_flag_bit	= NFS_STATE_RECLAIM_REBOOT,
	.recover_open	= nfs4_open_reclaim,
	.recover_lock	= nfs4_lock_reclaim,
	.establish_clid = nfs41_init_clientid,
	.reclaim_complete = nfs41_proc_reclaim_complete,
	.detect_trunking = nfs41_discover_server_trunking,
};
#endif /* CONFIG_NFS_V4_1 */


static const struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops = {
	.owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE,
	.state_flag_bit	= NFS_STATE_RECLAIM_NOGRACE,
	.recover_open	= nfs40_open_expired,
	.recover_lock	= nfs4_lock_expired,
	.establish_clid = nfs4_init_clientid,
};

#if defined(CONFIG_NFS_V4_1)

static const struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops = {
	.owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE,
	.state_flag_bit	= NFS_STATE_RECLAIM_NOGRACE,
	.recover_open	= nfs41_open_expired,
	.recover_lock	= nfs41_lock_expired,
	.establish_clid = nfs41_init_clientid,
};
#endif /* CONFIG_NFS_V4_1 */


static const struct nfs4_state_maintenance_ops nfs40_state_renewal_ops = {
	.sched_state_renewal = nfs4_proc_async_renew,
	.get_state_renewal_cred_locked = nfs4_get_renew_cred_locked,
	.renew_lease = nfs4_proc_renew,
};

#if defined(CONFIG_NFS_V4_1)

static const struct nfs4_state_maintenance_ops nfs41_state_renewal_ops = {
	.sched_state_renewal = nfs41_proc_async_sequence,
	.get_state_renewal_cred_locked = nfs4_get_machine_cred_locked,
	.renew_lease = nfs4_proc_sequence,
};
#endif


static const struct nfs4_mig_recovery_ops nfs40_mig_recovery_ops = {
	.get_locations = _nfs40_proc_get_locations,
	.fsid_present = _nfs40_proc_fsid_present,
};

#if defined(CONFIG_NFS_V4_1)

static const struct nfs4_mig_recovery_ops nfs41_mig_recovery_ops = {
	.get_locations = _nfs41_proc_get_locations,
	.fsid_present = _nfs41_proc_fsid_present,
};
#endif	/* CONFIG_NFS_V4_1 */


static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops = {
	.minor_version = 0,
	.init_caps = NFS_CAP_READDIRPLUS
		| NFS_CAP_ATOMIC_OPEN
		| NFS_CAP_POSIX_LOCK,
	.init_client = nfs40_init_client,
	.shutdown_client = nfs40_shutdown_client,
	.match_stateid = nfs4_match_stateid,
	.find_root_sec = nfs4_find_root_sec,
	.free_lock_state = nfs4_release_lockowner,
	.test_and_free_expired = nfs40_test_and_free_expired_stateid,
	.alloc_seqid = nfs_alloc_seqid,
	.call_sync_ops = &nfs40_call_sync_ops,
	.reboot_recovery_ops = &nfs40_reboot_recovery_ops,
	.nograce_recovery_ops = &nfs40_nograce_recovery_ops,
	.state_renewal_ops = &nfs40_state_renewal_ops,
	.mig_recovery_ops = &nfs40_mig_recovery_ops,
};

#if defined(CONFIG_NFS_V4_1)

static struct nfs_seqid *

nfs_alloc_no_seqid(struct nfs_seqid_counter *arg1, gfp_t arg2)
{
	return NULL;
}

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trond myklebust trond myklebust 19 100.00% 1 100.00%
Total 19 100.00% 1 100.00%


static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops = {
	.minor_version = 1,
	.init_caps = NFS_CAP_READDIRPLUS
		| NFS_CAP_ATOMIC_OPEN
		| NFS_CAP_POSIX_LOCK
		| NFS_CAP_STATEID_NFSV41
		| NFS_CAP_ATOMIC_OPEN_V1,
	.init_client = nfs41_init_client,
	.shutdown_client = nfs41_shutdown_client,
	.match_stateid = nfs41_match_stateid,
	.find_root_sec = nfs41_find_root_sec,
	.free_lock_state = nfs41_free_lock_state,
	.test_and_free_expired = nfs41_test_and_free_expired_stateid,
	.alloc_seqid = nfs_alloc_no_seqid,
	.session_trunk = nfs4_test_session_trunk,
	.call_sync_ops = &nfs41_call_sync_ops,
	.reboot_recovery_ops = &nfs41_reboot_recovery_ops,
	.nograce_recovery_ops = &nfs41_nograce_recovery_ops,
	.state_renewal_ops = &nfs41_state_renewal_ops,
	.mig_recovery_ops = &nfs41_mig_recovery_ops,
};
#endif

#if defined(CONFIG_NFS_V4_2)

static const struct nfs4_minor_version_ops nfs_v4_2_minor_ops = {
	.minor_version = 2,
	.init_caps = NFS_CAP_READDIRPLUS
		| NFS_CAP_ATOMIC_OPEN
		| NFS_CAP_POSIX_LOCK
		| NFS_CAP_STATEID_NFSV41
		| NFS_CAP_ATOMIC_OPEN_V1
		| NFS_CAP_ALLOCATE
		| NFS_CAP_COPY
		| NFS_CAP_DEALLOCATE
		| NFS_CAP_SEEK
		| NFS_CAP_LAYOUTSTATS
		| NFS_CAP_CLONE,
	.init_client = nfs41_init_client,
	.shutdown_client = nfs41_shutdown_client,
	.match_stateid = nfs41_match_stateid,
	.find_root_sec = nfs41_find_root_sec,
	.free_lock_state = nfs41_free_lock_state,
	.call_sync_ops = &nfs41_call_sync_ops,
	.test_and_free_expired = nfs41_test_and_free_expired_stateid,
	.alloc_seqid = nfs_alloc_no_seqid,
	.session_trunk = nfs4_test_session_trunk,
	.reboot_recovery_ops = &nfs41_reboot_recovery_ops,
	.nograce_recovery_ops = &nfs41_nograce_recovery_ops,
	.state_renewal_ops = &nfs41_state_renewal_ops,
	.mig_recovery_ops = &nfs41_mig_recovery_ops,
};
#endif


const struct nfs4_minor_version_ops *nfs_v4_minor_ops[] = {
	[0] = &nfs_v4_0_minor_ops,
#if defined(CONFIG_NFS_V4_1)
	[1] = &nfs_v4_1_minor_ops,
#endif
#if defined(CONFIG_NFS_V4_2)
	[2] = &nfs_v4_2_minor_ops,
#endif
};



static ssize_t nfs4_listxattr(struct dentry *dentry, char *list, size_t size)
{
	ssize_t error, error2;

	error = generic_listxattr(dentry, list, size);
	if (error < 0)
		return error;
	if (list) {
		list += error;
		size -= error;
	}

	error2 = nfs4_listxattr_nfs4_label(d_inode(dentry), list, size);
	if (error2 < 0)
		return error2;
	return error + error2;
}

Contributors
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andreas gruenbacher andreas gruenbacher 84 98.82% 1 50.00%
trond myklebust trond myklebust 1 1.18% 1 50.00%
Total 85 100.00% 2 100.00%


static const struct inode_operations nfs4_dir_inode_operations = {
	.create		= nfs_create,
	.lookup		= nfs_lookup,
	.atomic_open	= nfs_atomic_open,
	.link		= nfs_link,
	.unlink		= nfs_unlink,
	.symlink	= nfs_symlink,
	.mkdir		= nfs_mkdir,
	.rmdir		= nfs_rmdir,
	.mknod		= nfs_mknod,
	.rename		= nfs_rename,
	.permission	= nfs_permission,
	.getattr	= nfs_getattr,
	.setattr	= nfs_setattr,
	.listxattr	= nfs4_listxattr,
};


static const struct inode_operations nfs4_file_inode_operations = {
	.permission	= nfs_permission,
	.getattr	= nfs_getattr,
	.setattr	= nfs_setattr,
	.listxattr	= nfs4_listxattr,
};


const struct nfs_rpc_ops nfs_v4_clientops = {
	.version	= 4,			/* protocol version */
	.dentry_ops	= &nfs4_dentry_operations,
	.dir_inode_ops	= &nfs4_dir_inode_operations,
	.file_inode_ops	= &nfs4_file_inode_operations,
	.file_ops	= &nfs4_file_operations,
	.getroot	= nfs4_proc_get_root,
	.submount	= nfs4_submount,
	.try_mount	= nfs4_try_mount,
	.getattr	= nfs4_proc_getattr,
	.setattr	= nfs4_proc_setattr,
	.lookup		= nfs4_proc_lookup,
	.access		= nfs4_proc_access,
	.readlink	= nfs4_proc_readlink,
	.create		= nfs4_proc_create,
	.remove		= nfs4_proc_remove,
	.unlink_setup	= nfs4_proc_unlink_setup,
	.unlink_rpc_prepare = nfs4_proc_unlink_rpc_prepare,
	.unlink_done	= nfs4_proc_unlink_done,
	.rename_setup	= nfs4_proc_rename_setup,
	.rename_rpc_prepare = nfs4_proc_rename_rpc_prepare,
	.rename_done	= nfs4_proc_rename_done,
	.link		= nfs4_proc_link,
	.symlink	= nfs4_proc_symlink,
	.mkdir		= nfs4_proc_mkdir,
	.rmdir		= nfs4_proc_remove,
	.readdir	= nfs4_proc_readdir,
	.mknod		= nfs4_proc_mknod,
	.statfs		= nfs4_proc_statfs,
	.fsinfo		= nfs4_proc_fsinfo,
	.pathconf	= nfs4_proc_pathconf,
	.set_capabilities = nfs4_server_capabilities,
	.decode_dirent	= nfs4_decode_dirent,
	.pgio_rpc_prepare = nfs4_proc_pgio_rpc_prepare,
	.read_setup	= nfs4_proc_read_setup,
	.read_done	= nfs4_read_done,
	.write_setup	= nfs4_proc_write_setup,
	.write_done	= nfs4_write_done,
	.commit_setup	= nfs4_proc_commit_setup,
	.commit_rpc_prepare = nfs4_proc_commit_rpc_prepare,
	.commit_done	= nfs4_commit_done,
	.lock		= nfs4_proc_lock,
	.clear_acl_cache = nfs4_zap_acl_attr,
	.close_context  = nfs4_close_context,
	.open_context	= nfs4_atomic_open,
	.have_delegation = nfs4_have_delegation,
	.return_delegation = nfs4_inode_return_delegation,
	.alloc_client	= nfs4_alloc_client,
	.init_client	= nfs4_init_client,
	.free_client	= nfs4_free_client,
	.create_server	= nfs4_create_server,
	.clone_server	= nfs_clone_server,
};


static const struct xattr_handler nfs4_xattr_nfs4_acl_handler = {
	.name	= XATTR_NAME_NFSV4_ACL,
	.list	= nfs4_xattr_list_nfs4_acl,
	.get	= nfs4_xattr_get_nfs4_acl,
	.set	= nfs4_xattr_set_nfs4_acl,
};


const struct xattr_handler *nfs4_xattr_handlers[] = {
	&nfs4_xattr_nfs4_acl_handler,
#ifdef CONFIG_NFS_V4_SECURITY_LABEL
	&nfs4_xattr_nfs4_label_handler,
#endif
	NULL
};

/*
 * Local variables:
 *  c-basic-offset: 8
 * End:
 */
Overall Contributors
Person Tokens Prop Commits CommitProp
trond myklebust trond myklebust 27909 59.01% 529 58.52%
andy adamson andy adamson 4275 9.04% 63 6.97%
chuck lever chuck lever 3097 6.55% 53 5.86%
bryan schumaker bryan schumaker 2205 4.66% 41 4.54%
weston andros adamson weston andros adamson 1957 4.14% 28 3.10%
david quigley david quigley 1788 3.78% 5 0.55%
jeff layton jeff layton 1449 3.06% 21 2.32%
benny halevy benny halevy 549 1.16% 15 1.66%
j. bruce fields j. bruce fields 497 1.05% 7 0.77%
ricardo labiaga ricardo labiaga 464 0.98% 7 0.77%
alexandros batsakis alexandros batsakis 374 0.79% 9 1.00%
idan kedar idan kedar 294 0.62% 1 0.11%
neil brown neil brown 249 0.53% 10 1.11%
andreas gruenbacher andreas gruenbacher 243 0.51% 5 0.55%
david howells david howells 228 0.48% 7 0.77%
kinglong mee kinglong mee 212 0.45% 9 1.00%
fred isaman fred isaman 209 0.44% 13 1.44%
peng tao peng tao 198 0.42% 12 1.33%
neil horman neil horman 171 0.36% 1 0.11%
andrew elble andrew elble 131 0.28% 2 0.22%
al viro al viro 125 0.26% 10 1.11%
aneesh kumar aneesh kumar 123 0.26% 3 0.33%
olga kornievskaia olga kornievskaia 93 0.20% 4 0.44%
benjamin coddington benjamin coddington 91 0.19% 3 0.33%
steve dickson steve dickson 75 0.16% 2 0.22%
manoj naik manoj naik 58 0.12% 4 0.44%
anna schumaker anna schumaker 34 0.07% 11 1.22%
miklos szeredi miklos szeredi 24 0.05% 1 0.11%
dominique martinet dominique martinet 22 0.05% 1 0.11%
sven wegener sven wegener 20 0.04% 1 0.11%
deepa dinamani deepa dinamani 19 0.04% 1 0.11%
tigran mkrtchyan tigran mkrtchyan 16 0.03% 1 0.11%
sachin prabhu sachin prabhu 14 0.03% 2 0.22%
harvey harrison harvey harrison 12 0.03% 1 0.11%
dan carpenter dan carpenter 8 0.02% 1 0.11%
boaz harrosh boaz harrosh 7 0.01% 1 0.11%
andre przywara andre przywara 7 0.01% 1 0.11%
frank filz frank filz 7 0.01% 1 0.11%
malahal naineni malahal naineni 6 0.01% 1 0.11%
peter staubach peter staubach 6 0.01% 1 0.11%
matthew wilcox matthew wilcox 4 0.01% 1 0.11%
wei yongjun wei yongjun 3 0.01% 1 0.11%
tejun heo tejun heo 3 0.01% 1 0.11%
jovi zhang jovi zhang 3 0.01% 1 0.11%
nadav shemer nadav shemer 2 0.00% 1 0.11%
linus torvalds linus torvalds 2 0.00% 2 0.22%
anna schumaker (different from bryan) anna schumaker (different from bryan) 2 0.00% 1 0.11%
wang cong wang cong 1 0.00% 1 0.11%
andrew morton andrew morton 1 0.00% 1 0.11%
colin cross colin cross 1 0.00% 1 0.11%
jan blunck jan blunck 1 0.00% 1 0.11%
arjan van de ven arjan van de ven 1 0.00% 1 0.11%
arnd bergmann arnd bergmann 1 0.00% 1 0.11%
jesper juhl jesper juhl 1 0.00% 1 0.11%
Total 47292 100.00% 904 100.00%
Directory: fs/nfs

Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.
	Person	Tokens	Prop	Commits	CommitProp
david quigley	david quigley	98	100.00%	1	100.00%
	Total	98	100.00%	1	100.00%
cregit-Linux how code gets into the kernel

Release 4.10 fs/nfs/nfs4proc.c

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