Release 4.10 fs/nfsd/nfs4proc.c

/*
 *  Server-side procedures 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/file.h>
#include <linux/falloc.h>
#include <linux/slab.h>

#include "idmap.h"
#include "cache.h"
#include "xdr4.h"
#include "vfs.h"
#include "current_stateid.h"
#include "netns.h"
#include "acl.h"
#include "pnfs.h"
#include "trace.h"

#ifdef CONFIG_NFSD_V4_SECURITY_LABEL
#include <linux/security.h>


static inline void

nfsd4_security_inode_setsecctx(struct svc_fh *resfh, struct xdr_netobj *label, u32 *bmval)
{
	struct inode *inode = d_inode(resfh->fh_dentry);
	int status;

	inode_lock(inode);
	status = security_inode_setsecctx(resfh->fh_dentry,
		label->data, label->len);
	inode_unlock(inode);

	if (status)
		/*
                 * XXX: We should really fail the whole open, but we may
                 * already have created a new file, so it may be too
                 * late.  For now this seems the least of evils:
                 */
		bmval[2] &= ~FATTR4_WORD2_SECURITY_LABEL;

	return;
}
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#else

static inline void

nfsd4_security_inode_setsecctx(struct svc_fh *resfh, struct xdr_netobj *label, u32 *bmval)
{ }
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#endif


#define NFSDDBG_FACILITY		NFSDDBG_PROC


static u32 nfsd_attrmask[] = {
	NFSD_WRITEABLE_ATTRS_WORD0,
	NFSD_WRITEABLE_ATTRS_WORD1,
	NFSD_WRITEABLE_ATTRS_WORD2
};


static u32 nfsd41_ex_attrmask[] = {
	NFSD_SUPPATTR_EXCLCREAT_WORD0,
	NFSD_SUPPATTR_EXCLCREAT_WORD1,
	NFSD_SUPPATTR_EXCLCREAT_WORD2
};


static __be32

check_attr_support(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
		   u32 *bmval, u32 *writable)
{
	struct dentry *dentry = cstate->current_fh.fh_dentry;

	if (!nfsd_attrs_supported(cstate->minorversion, bmval))
		return nfserr_attrnotsupp;
	if ((bmval[0] & FATTR4_WORD0_ACL) && !IS_POSIXACL(d_inode(dentry)))
		return nfserr_attrnotsupp;
	if (writable && !bmval_is_subset(bmval, writable))
		return nfserr_inval;
	if (writable && (bmval[2] & FATTR4_WORD2_MODE_UMASK) &&
			(bmval[1] & FATTR4_WORD1_MODE))
		return nfserr_inval;
	return nfs_ok;
}

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1
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j. bruce fields
j. bruce fields
12
10.34%
1
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david howells
david howells
3
2.59%
1
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116
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4
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static __be32

nfsd4_check_open_attributes(struct svc_rqst *rqstp,
	struct nfsd4_compound_state *cstate, struct nfsd4_open *open)
{
	__be32 status = nfs_ok;

	if (open->op_create == NFS4_OPEN_CREATE) {
		if (open->op_createmode == NFS4_CREATE_UNCHECKED
		    || open->op_createmode == NFS4_CREATE_GUARDED)
			status = check_attr_support(rqstp, cstate,
					open->op_bmval, nfsd_attrmask);
		else if (open->op_createmode == NFS4_CREATE_EXCLUSIVE4_1)
			status = check_attr_support(rqstp, cstate,
					open->op_bmval, nfsd41_ex_attrmask);
	}

	return status;
}

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static int

is_create_with_attrs(struct nfsd4_open *open)
{
	return open->op_create == NFS4_OPEN_CREATE
		&& (open->op_createmode == NFS4_CREATE_UNCHECKED
		    || open->op_createmode == NFS4_CREATE_GUARDED
		    || open->op_createmode == NFS4_CREATE_EXCLUSIVE4_1);
}

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neil brown
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/*
 * if error occurs when setting the acl, just clear the acl bit
 * in the returned attr bitmap.
 */

static void

do_set_nfs4_acl(struct svc_rqst *rqstp, struct svc_fh *fhp,
		struct nfs4_acl *acl, u32 *bmval)
{
	__be32 status;

	status = nfsd4_set_nfs4_acl(rqstp, fhp, acl);
	if (status)
		/*
                 * We should probably fail the whole open at this point,
                 * but we've already created the file, so it's too late;
                 * So this seems the least of evils:
                 */
		bmval[0] &= ~FATTR4_WORD0_ACL;
}

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static inline void

fh_dup2(struct svc_fh *dst, struct svc_fh *src)
{
	fh_put(dst);
	dget(src->fh_dentry);
	if (src->fh_export)
		exp_get(src->fh_export);
	*dst = *src;
}

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95.83%
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33.33%
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yu zhiguo
1
2.08%
1
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kinglong mee
kinglong mee
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static __be32

do_open_permission(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_open *open, int accmode)
{
	__be32 status;

	if (open->op_truncate &&
		!(open->op_share_access & NFS4_SHARE_ACCESS_WRITE))
		return nfserr_inval;

	accmode |= NFSD_MAY_READ_IF_EXEC;

	if (open->op_share_access & NFS4_SHARE_ACCESS_READ)
		accmode |= NFSD_MAY_READ;
	if (open->op_share_access & NFS4_SHARE_ACCESS_WRITE)
		accmode |= (NFSD_MAY_WRITE | NFSD_MAY_TRUNC);
	if (open->op_share_deny & NFS4_SHARE_DENY_READ)
		accmode |= NFSD_MAY_WRITE;

	status = fh_verify(rqstp, current_fh, S_IFREG, accmode);

	return status;
}

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75.24%
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j. bruce fields
20
19.05%
4
50.00%
miklos szeredi
miklos szeredi
4
3.81%
1
12.50%
al viro
al viro
2
1.90%
1
12.50%
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105
100.00%
8
100.00%



static __be32 nfsd_check_obj_isreg(struct svc_fh *fh)
{
	umode_t mode = d_inode(fh->fh_dentry)->i_mode;

	if (S_ISREG(mode))
		return nfs_ok;
	if (S_ISDIR(mode))
		return nfserr_isdir;
	/*
         * Using err_symlink as our catch-all case may look odd; but
         * there's no other obvious error for this case in 4.0, and we
         * happen to know that it will cause the linux v4 client to do
         * the right thing on attempts to open something other than a
         * regular file.
         */
	return nfserr_symlink;
}

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6.38%
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static void nfsd4_set_open_owner_reply_cache(struct nfsd4_compound_state *cstate, struct nfsd4_open *open, struct svc_fh *resfh)
{
	if (nfsd4_has_session(cstate))
		return;
	fh_copy_shallow(&open->op_openowner->oo_owner.so_replay.rp_openfh,
			&resfh->fh_handle);
}

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static __be32

do_open_lookup(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, struct nfsd4_open *open, struct svc_fh **resfh)
{
	struct svc_fh *current_fh = &cstate->current_fh;
	int accmode;
	__be32 status;

	*resfh = kmalloc(sizeof(struct svc_fh), GFP_KERNEL);
	if (!*resfh)
		return nfserr_jukebox;
	fh_init(*resfh, NFS4_FHSIZE);
	open->op_truncate = 0;

	if (open->op_create) {
		/* FIXME: check session persistence and pnfs flags.
                 * The nfsv4.1 spec requires the following semantics:
                 *
                 * Persistent   | pNFS   | Server REQUIRED | Client Allowed
                 * Reply Cache  | server |                 |
                 * -------------+--------+-----------------+--------------------
                 * no           | no     | EXCLUSIVE4_1    | EXCLUSIVE4_1
                 *              |        |                 | (SHOULD)
                 *              |        | and EXCLUSIVE4  | or EXCLUSIVE4
                 *              |        |                 | (SHOULD NOT)
                 * no           | yes    | EXCLUSIVE4_1    | EXCLUSIVE4_1
                 * yes          | no     | GUARDED4        | GUARDED4
                 * yes          | yes    | GUARDED4        | GUARDED4
                 */

		/*
                 * Note: create modes (UNCHECKED,GUARDED...) are the same
                 * in NFSv4 as in v3 except EXCLUSIVE4_1.
                 */
		status = do_nfsd_create(rqstp, current_fh, open->op_fname.data,
					open->op_fname.len, &open->op_iattr,
					*resfh, open->op_createmode,
					(u32 *)open->op_verf.data,
					&open->op_truncate, &open->op_created);

		if (!status && open->op_label.len)
			nfsd4_security_inode_setsecctx(*resfh, &open->op_label, open->op_bmval);

		/*
                 * Following rfc 3530 14.2.16, and rfc 5661 18.16.4
                 * use the returned bitmask to indicate which attributes
                 * we used to store the verifier:
                 */
		if (nfsd_create_is_exclusive(open->op_createmode) && status == 0)
			open->op_bmval[1] |= (FATTR4_WORD1_TIME_ACCESS |
						FATTR4_WORD1_TIME_MODIFY);
	} else
		/*
                 * Note this may exit with the parent still locked.
                 * We will hold the lock until nfsd4_open's final
                 * lookup, to prevent renames or unlinks until we've had
                 * a chance to an acquire a delegation if appropriate.
                 */
		status = nfsd_lookup(rqstp, current_fh,
				     open->op_fname.data, open->op_fname.len, *resfh);
	if (status)
		goto out;
	status = nfsd_check_obj_isreg(*resfh);
	if (status)
		goto out;

	if (is_create_with_attrs(open) && open->op_acl != NULL)
		do_set_nfs4_acl(rqstp, *resfh, open->op_acl, open->op_bmval);

	nfsd4_set_open_owner_reply_cache(cstate, open, *resfh);
	accmode = NFSD_MAY_NOP;
	if (open->op_created ||
			open->op_claim_type == NFS4_OPEN_CLAIM_DELEGATE_CUR)
		accmode |= NFSD_MAY_OWNER_OVERRIDE;
	status = do_open_permission(rqstp, *resfh, open, accmode);
	set_change_info(&open->op_cinfo, current_fh);
out:
	return status;
}

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neil brown
127
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3
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j. bruce fields
99
29.82%
11
45.83%
yu zhiguo
yu zhiguo
28
8.43%
1
4.17%
david quigley
david quigley
25
7.53%
1
4.17%
jeff layton
jeff layton
22
6.63%
1
4.17%
andrew morton
andrew morton
19
5.72%
2
8.33%
kinglong mee
kinglong mee
5
1.51%
1
4.17%
al viro
al viro
2
0.60%
1
4.17%
trond myklebust
trond myklebust
2
0.60%
1
4.17%
mi jinlong
mi jinlong
2
0.60%
1
4.17%
benny halevy
benny halevy
1
0.30%
1
4.17%
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332
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24
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static __be32

do_open_fhandle(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, struct nfsd4_open *open)
{
	struct svc_fh *current_fh = &cstate->current_fh;
	__be32 status;
	int accmode = 0;

	/* We don't know the target directory, and therefore can not
        * set the change info
        */

	memset(&open->op_cinfo, 0, sizeof(struct nfsd4_change_info));

	nfsd4_set_open_owner_reply_cache(cstate, open, current_fh);

	open->op_truncate = (open->op_iattr.ia_valid & ATTR_SIZE) &&
		(open->op_iattr.ia_size == 0);
	/*
         * In the delegation case, the client is telling us about an
         * open that it *already* performed locally, some time ago.  We
         * should let it succeed now if possible.
         *
         * In the case of a CLAIM_FH open, on the other hand, the client
         * may be counting on us to enforce permissions (the Linux 4.1
         * client uses this for normal opens, for example).
         */
	if (open->op_claim_type == NFS4_OPEN_CLAIM_DELEG_CUR_FH)
		accmode = NFSD_MAY_OWNER_OVERRIDE;

	status = do_open_permission(rqstp, current_fh, open, accmode);

	return status;
}

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j. bruce fields
35
29.66%
3
33.33%
neil brown
neil brown
23
19.49%
3
33.33%
al viro
al viro
2
1.69%
1
11.11%
Total
118
100.00%
9
100.00%


static void

copy_clientid(clientid_t *clid, struct nfsd4_session *session)
{
	struct nfsd4_sessionid *sid =
			(struct nfsd4_sessionid *)session->se_sessionid.data;

	clid->cl_boot = sid->clientid.cl_boot;
	clid->cl_id = sid->clientid.cl_id;
}

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static __be32

nfsd4_open(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
	   struct nfsd4_open *open)
{
	__be32 status;
	struct svc_fh *resfh = NULL;
	struct net *net = SVC_NET(rqstp);
	struct nfsd_net *nn = net_generic(net, nfsd_net_id);

	dprintk("NFSD: nfsd4_open filename %.*s op_openowner %p\n",
		(int)open->op_fname.len, open->op_fname.data,
		open->op_openowner);

	/* This check required by spec. */
	if (open->op_create && open->op_claim_type != NFS4_OPEN_CLAIM_NULL)
		return nfserr_inval;

	open->op_created = 0;
	/*
         * RFC5661 18.51.3
         * Before RECLAIM_COMPLETE done, server should deny new lock
         */
	if (nfsd4_has_session(cstate) &&
	    !test_bit(NFSD4_CLIENT_RECLAIM_COMPLETE,
		      &cstate->session->se_client->cl_flags) &&
	    open->op_claim_type != NFS4_OPEN_CLAIM_PREVIOUS)
		return nfserr_grace;

	if (nfsd4_has_session(cstate))
		copy_clientid(&open->op_clientid, cstate->session);

	/* check seqid for replay. set nfs4_owner */
	status = nfsd4_process_open1(cstate, open, nn);
	if (status == nfserr_replay_me) {
		struct nfs4_replay *rp = &open->op_openowner->oo_owner.so_replay;
		fh_put(&cstate->current_fh);
		fh_copy_shallow(&cstate->current_fh.fh_handle,
				&rp->rp_openfh);
		status = fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP);
		if (status)
			dprintk("nfsd4_open: replay failed"
				" restoring previous filehandle\n");
		else
			status = nfserr_replay_me;
	}
	if (status)
		goto out;
	if (open->op_xdr_error) {
		status = open->op_xdr_error;
		goto out;
	}

	status = nfsd4_check_open_attributes(rqstp, cstate, open);
	if (status)
		goto out;

	/* Openowner is now set, so sequence id will get bumped.  Now we need
         * these checks before we do any creates: */
	status = nfserr_grace;
	if (opens_in_grace(net) && open->op_claim_type != NFS4_OPEN_CLAIM_PREVIOUS)
		goto out;
	status = nfserr_no_grace;
	if (!opens_in_grace(net) && open->op_claim_type == NFS4_OPEN_CLAIM_PREVIOUS)
		goto out;

	switch (open->op_claim_type) {
		case NFS4_OPEN_CLAIM_DELEGATE_CUR:
		case NFS4_OPEN_CLAIM_NULL:
			status = do_open_lookup(rqstp, cstate, open, &resfh);
			if (status)
				goto out;
			break;
		case NFS4_OPEN_CLAIM_PREVIOUS:
			status = nfs4_check_open_reclaim(&open->op_clientid,
							 cstate, nn);
			if (status)
				goto out;
			open->op_openowner->oo_flags |= NFS4_OO_CONFIRMED;
		case NFS4_OPEN_CLAIM_FH:
		case NFS4_OPEN_CLAIM_DELEG_CUR_FH:
			status = do_open_fhandle(rqstp, cstate, open);
			if (status)
				goto out;
			resfh = &cstate->current_fh;
			break;
		case NFS4_OPEN_CLAIM_DELEG_PREV_FH:
             	case NFS4_OPEN_CLAIM_DELEGATE_PREV:
			dprintk("NFSD: unsupported OPEN claim type %d\n",
				open->op_claim_type);
			status = nfserr_notsupp;
			goto out;
		default:
			dprintk("NFSD: Invalid OPEN claim type %d\n",
				open->op_claim_type);
			status = nfserr_inval;
			goto out;
	}
	/*
         * nfsd4_process_open2() does the actual opening of the file.  If
         * successful, it (1) truncates the file if open->op_truncate was
         * set, (2) sets open->op_stateid, (3) sets open->op_delegation.
         */
	status = nfsd4_process_open2(rqstp, resfh, open);
	WARN(status && open->op_created,
	     "nfsd4_process_open2 failed to open newly-created file! status=%u\n",
	     be32_to_cpu(status));
out:
	if (resfh && resfh != &cstate->current_fh) {
		fh_dup2(&cstate->current_fh, resfh);
		fh_put(resfh);
		kfree(resfh);
	}
	nfsd4_cleanup_open_state(cstate, open);
	nfsd4_bump_seqid(cstate, status);
	return status;
}

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j. bruce fields
j. bruce fields
163
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14
37.84%
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neil brown
143
26.43%
5
13.51%
andrew morton
andrew morton
91
16.82%
4
10.81%
mi jinlong
mi jinlong
42
7.76%
2
5.41%
stanislav kinsbursky
stanislav kinsbursky
31
5.73%
2
5.41%
jeff layton
jeff layton
25
4.62%
4
10.81%
andy adamson
andy adamson
23
4.25%
2
5.41%
yu zhiguo
yu zhiguo
18
3.33%
1
2.70%
al viro
al viro
4
0.74%
2
5.41%
miklos szeredi
miklos szeredi
1
0.18%
1
2.70%
Total
541
100.00%
37
100.00%

/*
 * OPEN is the only seqid-mutating operation whose decoding can fail
 * with a seqid-mutating error (specifically, decoding of user names in
 * the attributes).  Therefore we have to do some processing to look up
 * the stateowner so that we can bump the seqid.
 */


static __be32 nfsd4_open_omfg(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, struct nfsd4_op *op)
{
	struct nfsd4_open *open = (struct nfsd4_open *)&op->u;

	if (!seqid_mutating_err(ntohl(op->status)))
		return op->status;
	if (nfsd4_has_session(cstate))
		return op->status;
	open->op_xdr_error = op->status;
	return nfsd4_open(rqstp, cstate, open);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
j. bruce fields
j. bruce fields
84
100.00%
1
100.00%
Total
84
100.00%
1
100.00%

/*
 * filehandle-manipulating ops.
 */

static __be32

nfsd4_getfh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
	    struct svc_fh **getfh)
{
	if (!cstate->current_fh.fh_dentry)
		return nfserr_nofilehandle;

	*getfh = &cstate->current_fh;
	return nfs_ok;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
neil brown
neil brown
31
68.89%
1
25.00%
j. bruce fields
j. bruce fields
13
28.89%
2
50.00%
al viro
al viro
1
2.22%
1
25.00%
Total
45
100.00%
4
100.00%


static __be32

nfsd4_putfh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
	    struct nfsd4_putfh *putfh)
{
	fh_put(&cstate->current_fh);
	cstate->current_fh.fh_handle.fh_size = putfh->pf_fhlen;
	memcpy(&cstate->current_fh.fh_handle.fh_base, putfh->pf_fhval,
	       putfh->pf_fhlen);
	return fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_BYPASS_GSS);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
neil brown
neil brown
60
78.95%
1
25.00%
j. bruce fields
j. bruce fields
15
19.74%
2
50.00%
al viro
al viro
1
1.32%
1
25.00%
Total
76
100.00%
4
100.00%


static __be32

nfsd4_putrootfh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
		void *arg)
{
	__be32 status;

	fh_put(&cstate->current_fh);
	status = exp_pseudoroot(rqstp, &cstate->current_fh);
	return status;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
neil brown
neil brown
25
54.35%
1
20.00%
j. bruce fields
j. bruce fields
12
26.09%
2
40.00%
andrew morton
andrew morton
7
15.22%
1
20.00%
al viro
al viro
2
4.35%
1
20.00%
Total
46
100.00%
5
100.00%


static __be32

nfsd4_restorefh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
		void *arg)
{
	if (!cstate->save_fh.fh_dentry)
		return nfserr_restorefh;

	fh_dup2(&cstate->current_fh, &cstate->save_fh);
	if (HAS_STATE_ID(cstate, SAVED_STATE_ID_FLAG)) {
		memcpy(&cstate->current_stateid, &cstate->save_stateid, sizeof(stateid_t));
		SET_STATE_ID(cstate, CURRENT_STATE_ID_FLAG);
	}
	return nfs_ok;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
tigran mkrtchyan
tigran mkrtchyan
36
42.86%
2
28.57%
neil brown
neil brown
26
30.95%
1
14.29%
j. bruce fields
j. bruce fields
20
23.81%
2
28.57%
andrew morton
andrew morton
1
1.19%
1
14.29%
al viro
al viro
1
1.19%
1
14.29%
Total
84
100.00%
7
100.00%


static __be32

nfsd4_savefh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
	     void *arg)
{
	if (!cstate->current_fh.fh_dentry)
		return nfserr_nofilehandle;

	fh_dup2(&cstate->save_fh, &cstate->current_fh);
	if (HAS_STATE_ID(cstate, CURRENT_STATE_ID_FLAG)) {
		memcpy(&cstate->save_stateid, &cstate->current_stateid, sizeof(stateid_t));
		SET_STATE_ID(cstate, SAVED_STATE_ID_FLAG);
	}
	return nfs_ok;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
tigran mkrtchyan
tigran mkrtchyan
36
42.86%
2
33.33%
neil brown
neil brown
27
32.14%
1
16.67%
j. bruce fields
j. bruce fields
20
23.81%
2
33.33%
al viro
al viro
1
1.19%
1
16.67%
Total
84
100.00%
6
100.00%

/*
 * misc nfsv4 ops
 */

static __be32

nfsd4_access(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
	     struct nfsd4_access *access)
{
	if (access->ac_req_access & ~NFS3_ACCESS_FULL)
		return nfserr_inval;

	access->ac_resp_access = access->ac_req_access;
	return nfsd_access(rqstp, &cstate->current_fh, &access->ac_resp_access,
			   &access->ac_supported);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
neil brown
neil brown
56
90.32%
1
33.33%
j. bruce fields
j. bruce fields
5
8.06%
1
33.33%
al viro
al viro
1
1.61%
1
33.33%
Total
62
100.00%
3
100.00%



static void gen_boot_verifier(nfs4_verifier *verifier, struct net *net)
{
	__be32 verf[2];
	struct nfsd_net *nn = net_generic(net, nfsd_net_id);

	/*
         * This is opaque to client, so no need to byte-swap. Use
         * __force to keep sparse happy
         */
	verf[0] = (__force __be32)nn->nfssvc_boot.tv_sec;
	verf[1] = (__force __be32)nn->nfssvc_boot.tv_usec;
	memcpy(verifier->data, verf, sizeof(verifier->data));
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
chuck lever
chuck lever
56
70.00%
1
33.33%
stanislav kinsbursky
stanislav kinsbursky
21
26.25%
1
33.33%
jeff layton
jeff layton
3
3.75%
1
33.33%
Total
80
100.00%
3
100.00%


static __be32

nfsd4_commit(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
	     struct nfsd4_commit *commit)
{
	gen_boot_verifier(&commit->co_verf, SVC_NET(rqstp));
	return nfsd_commit(rqstp, &cstate->current_fh, commit->co_offset,
			     commit->co_count);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
neil brown
neil brown
37
69.81%
1
16.67%
j. bruce fields
j. bruce fields
6
11.32%
2
33.33%
stanislav kinsbursky
stanislav kinsbursky
5
9.43%
1
16.67%
chuck lever
chuck lever
4
7.55%
1
16.67%
al viro
al viro
1
1.89%
1
16.67%
Total
53
100.00%
6
100.00%


static __be32

nfsd4_create(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
	     struct nfsd4_create *create)
{
	struct svc_fh resfh;
	__be32 status;
	dev_t rdev;

	fh_init(&resfh, NFS4_FHSIZE);

	status = fh_verify(rqstp, &cstate->current_fh, S_IFDIR, NFSD_MAY_NOP);
	if (status)
		return status;

	status = check_attr_support(rqstp, cstate, create->cr_bmval,
				    nfsd_attrmask);
	if (status)
		return status;

	switch (create->cr_type) {
	case NF4LNK:
		status = nfsd_symlink(rqstp, &cstate->current_fh,
				      create->cr_name, create->cr_namelen,
				      create->cr_data, &resfh);
		break;

	case NF4BLK:
		rdev = MKDEV(create->cr_specdata1, create->cr_specdata2);
		if (MAJOR(rdev) != create->cr_specdata1 ||
		    MINOR(rdev) != create->cr_specdata2)
			return nfserr_inval;
		status = nfsd_create(rqstp, &cstate->current_fh,
				     create->cr_name, create->cr_namelen,
				     &create->cr_iattr, S_IFBLK, rdev, &resfh);
		break;

	case NF4CHR:
		rdev = MKDEV(create->cr_specdata1, create->cr_specdata2);
		if (MAJOR(rdev) != create->cr_specdata1 ||
		    MINOR(rdev) != create->cr_specdata2)
			return nfserr_inval;
		status = nfsd_create(rqstp, &cstate->current_fh,
				     create->cr_name, create->cr_namelen,
				     &create->cr_iattr,S_IFCHR, rdev, &resfh);
		break;

	case NF4SOCK:
		status = nfsd_create(rqstp, &cstate->current_fh,
				     create->cr_name, create->cr_namelen,
				     &create->cr_iattr, S_IFSOCK, 0, &resfh);
		break;

	case NF4FIFO:
		status = nfsd_create(rqstp, &cstate->current_fh,
				     create->cr_name, create->cr_namelen,
				     &create->cr_iattr, S_IFIFO, 0, &resfh);
		break;

	case NF4DIR:
		create->cr_iattr.ia_valid &= ~ATTR_SIZE;
		status = nfsd_create(rqstp, &cstate->current_fh,
				     create->cr_name, create->cr_namelen,
				     &create->cr_iattr, S_IFDIR, 0, &resfh);
		break;

	default:
		status = nfserr_badtype;
	}

	if (status)
		goto out;

	if (create->cr_label.len)
		nfsd4_security_inode_setsecctx(&resfh, &create->cr_label, create->cr_bmval);

	if (create->cr_acl != NULL)
		do_set_nfs4_acl(rqstp, &resfh,