Release 4.11 fs/xfs/xfs_ioctl.c
/*
* Copyright (c) 2000-2005 Silicon Graphics, Inc.
* All Rights Reserved.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it would be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "xfs.h"
#include "xfs_fs.h"
#include "xfs_shared.h"
#include "xfs_format.h"
#include "xfs_log_format.h"
#include "xfs_trans_resv.h"
#include "xfs_mount.h"
#include "xfs_inode.h"
#include "xfs_ioctl.h"
#include "xfs_alloc.h"
#include "xfs_rtalloc.h"
#include "xfs_itable.h"
#include "xfs_error.h"
#include "xfs_attr.h"
#include "xfs_bmap.h"
#include "xfs_bmap_util.h"
#include "xfs_fsops.h"
#include "xfs_discard.h"
#include "xfs_quota.h"
#include "xfs_export.h"
#include "xfs_trace.h"
#include "xfs_icache.h"
#include "xfs_symlink.h"
#include "xfs_trans.h"
#include "xfs_pnfs.h"
#include "xfs_acl.h"
#include <linux/capability.h>
#include <linux/cred.h>
#include <linux/dcache.h>
#include <linux/mount.h>
#include <linux/namei.h>
#include <linux/pagemap.h>
#include <linux/slab.h>
#include <linux/exportfs.h>
/*
* xfs_find_handle maps from userspace xfs_fsop_handlereq structure to
* a file or fs handle.
*
* XFS_IOC_PATH_TO_FSHANDLE
* returns fs handle for a mount point or path within that mount point
* XFS_IOC_FD_TO_HANDLE
* returns full handle for a FD opened in user space
* XFS_IOC_PATH_TO_HANDLE
* returns full handle for a path
*/
int
xfs_find_handle(
unsigned int cmd,
xfs_fsop_handlereq_t *hreq)
{
int hsize;
xfs_handle_t handle;
struct inode *inode;
struct fd f = {NULL};
struct path path;
int error;
struct xfs_inode *ip;
if (cmd == XFS_IOC_FD_TO_HANDLE) {
f = fdget(hreq->fd);
if (!f.file)
return -EBADF;
inode = file_inode(f.file);
} else {
error = user_lpath((const char __user *)hreq->path, &path);
if (error)
return error;
inode = d_inode(path.dentry);
}
ip = XFS_I(inode);
/*
* We can only generate handles for inodes residing on a XFS filesystem,
* and only for regular files, directories or symbolic links.
*/
error = -EINVAL;
if (inode->i_sb->s_magic != XFS_SB_MAGIC)
goto out_put;
error = -EBADF;
if (!S_ISREG(inode->i_mode) &&
!S_ISDIR(inode->i_mode) &&
!S_ISLNK(inode->i_mode))
goto out_put;
memcpy(&handle.ha_fsid, ip->i_mount->m_fixedfsid, sizeof(xfs_fsid_t));
if (cmd == XFS_IOC_PATH_TO_FSHANDLE) {
/*
* This handle only contains an fsid, zero the rest.
*/
memset(&handle.ha_fid, 0, sizeof(handle.ha_fid));
hsize = sizeof(xfs_fsid_t);
} else {
handle.ha_fid.fid_len = sizeof(xfs_fid_t) -
sizeof(handle.ha_fid.fid_len);
handle.ha_fid.fid_pad = 0;
handle.ha_fid.fid_gen = inode->i_generation;
handle.ha_fid.fid_ino = ip->i_ino;
hsize = XFS_HSIZE(handle);
}
error = -EFAULT;
if (copy_to_user(hreq->ohandle, &handle, hsize) ||
copy_to_user(hreq->ohandlen, &hsize, sizeof(__s32)))
goto out_put;
error = 0;
out_put:
if (cmd == XFS_IOC_FD_TO_HANDLE)
fdput(f);
else
path_put(&path);
return error;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Christoph Hellwig | 319 | 90.62% | 7 | 41.18% |
Al Viro | 16 | 4.55% | 3 | 17.65% |
Dave Chinner | 5 | 1.42% | 2 | 11.76% |
Eric Sandeen | 5 | 1.42% | 1 | 5.88% |
David Howells | 3 | 0.85% | 1 | 5.88% |
Josef 'Jeff' Sipek | 2 | 0.57% | 1 | 5.88% |
Nathan Scott | 1 | 0.28% | 1 | 5.88% |
David Chinner | 1 | 0.28% | 1 | 5.88% |
Total | 352 | 100.00% | 17 | 100.00% |
/*
* No need to do permission checks on the various pathname components
* as the handle operations are privileged.
*/
STATIC int
xfs_handle_acceptable(
void *context,
struct dentry *dentry)
{
return 1;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Christoph Hellwig | 18 | 100.00% | 2 | 100.00% |
Total | 18 | 100.00% | 2 | 100.00% |
/*
* Convert userspace handle data into a dentry.
*/
struct dentry *
xfs_handle_to_dentry(
struct file *parfilp,
void __user *uhandle,
u32 hlen)
{
xfs_handle_t handle;
struct xfs_fid64 fid;
/*
* Only allow handle opens under a directory.
*/
if (!S_ISDIR(file_inode(parfilp)->i_mode))
return ERR_PTR(-ENOTDIR);
if (hlen != sizeof(xfs_handle_t))
return ERR_PTR(-EINVAL);
if (copy_from_user(&handle, uhandle, hlen))
return ERR_PTR(-EFAULT);
if (handle.ha_fid.fid_len !=
sizeof(handle.ha_fid) - sizeof(handle.ha_fid.fid_len))
return ERR_PTR(-EINVAL);
memset(&fid, 0, sizeof(struct fid));
fid.ino = handle.ha_fid.fid_ino;
fid.gen = handle.ha_fid.fid_gen;
return exportfs_decode_fh(parfilp->f_path.mnt, (struct fid *)&fid, 3,
FILEID_INO32_GEN | XFS_FILEID_TYPE_64FLAG,
xfs_handle_acceptable, NULL);
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Christoph Hellwig | 172 | 97.73% | 4 | 66.67% |
Al Viro | 3 | 1.70% | 1 | 16.67% |
Nathan Scott | 1 | 0.57% | 1 | 16.67% |
Total | 176 | 100.00% | 6 | 100.00% |
STATIC struct dentry *
xfs_handlereq_to_dentry(
struct file *parfilp,
xfs_fsop_handlereq_t *hreq)
{
return xfs_handle_to_dentry(parfilp, hreq->ihandle, hreq->ihandlen);
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Christoph Hellwig | 31 | 100.00% | 3 | 100.00% |
Total | 31 | 100.00% | 3 | 100.00% |
int
xfs_open_by_handle(
struct file *parfilp,
xfs_fsop_handlereq_t *hreq)
{
const struct cred *cred = current_cred();
int error;
int fd;
int permflag;
struct file *filp;
struct inode *inode;
struct dentry *dentry;
fmode_t fmode;
struct path path;
if (!capable(CAP_SYS_ADMIN))
return -EPERM;
dentry = xfs_handlereq_to_dentry(parfilp, hreq);
if (IS_ERR(dentry))
return PTR_ERR(dentry);
inode = d_inode(dentry);
/* Restrict xfs_open_by_handle to directories & regular files. */
if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode))) {
error = -EPERM;
goto out_dput;
}
#if BITS_PER_LONG != 32
hreq->oflags |= O_LARGEFILE;
#endif
permflag = hreq->oflags;
fmode = OPEN_FMODE(permflag);
if ((!(permflag & O_APPEND) || (permflag & O_TRUNC)) &&
(fmode & FMODE_WRITE) && IS_APPEND(inode)) {
error = -EPERM;
goto out_dput;
}
if ((fmode & FMODE_WRITE) && IS_IMMUTABLE(inode)) {
error = -EPERM;
goto out_dput;
}
/* Can't write directories. */
if (S_ISDIR(inode->i_mode) && (fmode & FMODE_WRITE)) {
error = -EISDIR;
goto out_dput;
}
fd = get_unused_fd_flags(0);
if (fd < 0) {
error = fd;
goto out_dput;
}
path.mnt = parfilp->f_path.mnt;
path.dentry = dentry;
filp = dentry_open(&path, hreq->oflags, cred);
dput(dentry);
if (IS_ERR(filp)) {
put_unused_fd(fd);
return PTR_ERR(filp);
}
if (S_ISREG(inode->i_mode)) {
filp->f_flags |= O_NOATIME;
filp->f_mode |= FMODE_NOCMTIME;
}
fd_install(fd, filp);
return fd;
out_dput:
dput(dentry);
return error;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Christoph Hellwig | 234 | 65.36% | 4 | 25.00% |
Nathan Scott | 46 | 12.85% | 1 | 6.25% |
Al Viro | 28 | 7.82% | 2 | 12.50% |
David Howells | 14 | 3.91% | 2 | 12.50% |
Dave Chinner | 11 | 3.07% | 1 | 6.25% |
Vlad Apostolov | 8 | 2.23% | 1 | 6.25% |
Stephen Lord | 6 | 1.68% | 1 | 6.25% |
Yann Droneaud | 4 | 1.12% | 1 | 6.25% |
Josef 'Jeff' Sipek | 3 | 0.84% | 1 | 6.25% |
Eric Sandeen | 3 | 0.84% | 1 | 6.25% |
Eryu Guan | 1 | 0.28% | 1 | 6.25% |
Total | 358 | 100.00% | 16 | 100.00% |
int
xfs_readlink_by_handle(
struct file *parfilp,
xfs_fsop_handlereq_t *hreq)
{
struct dentry *dentry;
__u32 olen;
int error;
if (!capable(CAP_SYS_ADMIN))
return -EPERM;
dentry = xfs_handlereq_to_dentry(parfilp, hreq);
if (IS_ERR(dentry))
return PTR_ERR(dentry);
/* Restrict this handle operation to symlinks only. */
if (!d_is_symlink(dentry)) {
error = -EINVAL;
goto out_dput;
}
if (copy_from_user(&olen, hreq->ohandlen, sizeof(__u32))) {
error = -EFAULT;
goto out_dput;
}
error = vfs_readlink(dentry, hreq->ohandle, olen);
out_dput:
dput(dentry);
return error;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Christoph Hellwig | 116 | 90.62% | 6 | 60.00% |
Nathan Scott | 6 | 4.69% | 2 | 20.00% |
Eric Sandeen | 4 | 3.12% | 1 | 10.00% |
Miklos Szeredi | 2 | 1.56% | 1 | 10.00% |
Total | 128 | 100.00% | 10 | 100.00% |
int
xfs_set_dmattrs(
xfs_inode_t *ip,
u_int evmask,
u_int16_t state)
{
xfs_mount_t *mp = ip->i_mount;
xfs_trans_t *tp;
int error;
if (!capable(CAP_SYS_ADMIN))
return -EPERM;
if (XFS_FORCED_SHUTDOWN(mp))
return -EIO;
error = xfs_trans_alloc(mp, &M_RES(mp)->tr_ichange, 0, 0, 0, &tp);
if (error)
return error;
xfs_ilock(ip, XFS_ILOCK_EXCL);
xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL);
ip->i_d.di_dmevmask = evmask;
ip->i_d.di_dmstate = state;
xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
error = xfs_trans_commit(tp);
return error;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Dave Chinner | 125 | 92.59% | 2 | 50.00% |
Christoph Hellwig | 6 | 4.44% | 1 | 25.00% |
Jie Liu | 4 | 2.96% | 1 | 25.00% |
Total | 135 | 100.00% | 4 | 100.00% |
STATIC int
xfs_fssetdm_by_handle(
struct file *parfilp,
void __user *arg)
{
int error;
struct fsdmidata fsd;
xfs_fsop_setdm_handlereq_t dmhreq;
struct dentry *dentry;
if (!capable(CAP_MKNOD))
return -EPERM;
if (copy_from_user(&dmhreq, arg, sizeof(xfs_fsop_setdm_handlereq_t)))
return -EFAULT;
error = mnt_want_write_file(parfilp);
if (error)
return error;
dentry = xfs_handlereq_to_dentry(parfilp, &dmhreq.hreq);
if (IS_ERR(dentry)) {
mnt_drop_write_file(parfilp);
return PTR_ERR(dentry);
}
if (IS_IMMUTABLE(d_inode(dentry)) || IS_APPEND(d_inode(dentry))) {
error = -EPERM;
goto out;
}
if (copy_from_user(&fsd, dmhreq.data, sizeof(fsd))) {
error = -EFAULT;
goto out;
}
error = xfs_set_dmattrs(XFS_I(d_inode(dentry)), fsd.fsd_dmevmask,
fsd.fsd_dmstate);
out:
mnt_drop_write_file(parfilp);
dput(dentry);
return error;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Christoph Hellwig | 147 | 73.87% | 5 | 55.56% |
Jan Kara | 26 | 13.07% | 1 | 11.11% |
Nathan Scott | 17 | 8.54% | 2 | 22.22% |
David Howells | 9 | 4.52% | 1 | 11.11% |
Total | 199 | 100.00% | 9 | 100.00% |
STATIC int
xfs_attrlist_by_handle(
struct file *parfilp,
void __user *arg)
{
int error = -ENOMEM;
attrlist_cursor_kern_t *cursor;
struct xfs_fsop_attrlist_handlereq __user *p = arg;
xfs_fsop_attrlist_handlereq_t al_hreq;
struct dentry *dentry;
char *kbuf;
if (!capable(CAP_SYS_ADMIN))
return -EPERM;
if (copy_from_user(&al_hreq, arg, sizeof(xfs_fsop_attrlist_handlereq_t)))
return -EFAULT;
if (al_hreq.buflen < sizeof(struct attrlist) ||
al_hreq.buflen > XFS_XATTR_LIST_MAX)
return -EINVAL;
/*
* Reject flags, only allow namespaces.
*/
if (al_hreq.flags & ~(ATTR_ROOT | ATTR_SECURE))
return -EINVAL;
dentry = xfs_handlereq_to_dentry(parfilp, &al_hreq.hreq);
if (IS_ERR(dentry))
return PTR_ERR(dentry);
kbuf = kmem_zalloc_large(al_hreq.buflen, KM_SLEEP);
if (!kbuf)
goto out_dput;
cursor = (attrlist_cursor_kern_t *)&al_hreq.pos;
error = xfs_attr_list(XFS_I(d_inode(dentry)), kbuf, al_hreq.buflen,
al_hreq.flags, cursor);
if (error)
goto out_kfree;
if (copy_to_user(&p->pos, cursor, sizeof(attrlist_cursor_kern_t))) {
error = -EFAULT;
goto out_kfree;
}
if (copy_to_user(al_hreq.buffer, kbuf, al_hreq.buflen))
error = -EFAULT;
out_kfree:
kmem_free(kbuf);
out_dput:
dput(dentry);
return error;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Christoph Hellwig | 211 | 78.73% | 5 | 38.46% |
Darrick J. Wong | 35 | 13.06% | 1 | 7.69% |
Dan Carpenter | 10 | 3.73% | 1 | 7.69% |
Nathan Scott | 5 | 1.87% | 2 | 15.38% |
David Howells | 3 | 1.12% | 1 | 7.69% |
Eric Sandeen | 2 | 0.75% | 1 | 7.69% |
Jan Tulak | 1 | 0.37% | 1 | 7.69% |
Dave Chinner | 1 | 0.37% | 1 | 7.69% |
Total | 268 | 100.00% | 13 | 100.00% |
int
xfs_attrmulti_attr_get(
struct inode *inode,
unsigned char *name,
unsigned char __user *ubuf,
__uint32_t *len,
__uint32_t flags)
{
unsigned char *kbuf;
int error = -EFAULT;
if (*len > XFS_XATTR_SIZE_MAX)
return -EINVAL;
kbuf = kmem_zalloc_large(*len, KM_SLEEP);
if (!kbuf)
return -ENOMEM;
error = xfs_attr_get(XFS_I(inode), name, kbuf, (int *)len, flags);
if (error)
goto out_kfree;
if (copy_to_user(ubuf, kbuf, *len))
error = -EFAULT;
out_kfree:
kmem_free(kbuf);
return error;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Christoph Hellwig | 108 | 86.40% | 3 | 30.00% |
David Chinner | 7 | 5.60% | 2 | 20.00% |
Dave Chinner | 7 | 5.60% | 3 | 30.00% |
Nathan Scott | 2 | 1.60% | 1 | 10.00% |
Jan Tulak | 1 | 0.80% | 1 | 10.00% |
Total | 125 | 100.00% | 10 | 100.00% |
int
xfs_attrmulti_attr_set(
struct inode *inode,
unsigned char *name,
const unsigned char __user *ubuf,
__uint32_t len,
__uint32_t flags)
{
unsigned char *kbuf;
int error;
if (IS_IMMUTABLE(inode) || IS_APPEND(inode))
return -EPERM;
if (len > XFS_XATTR_SIZE_MAX)
return -EINVAL;
kbuf = memdup_user(ubuf, len);
if (IS_ERR(kbuf))
return PTR_ERR(kbuf);
error = xfs_attr_set(XFS_I(inode), name, kbuf, len, flags);
if (!error)
xfs_forget_acl(inode, name, flags);
kfree(kbuf);
return error;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Christoph Hellwig | 83 | 66.94% | 3 | 33.33% |
Andreas Gruenbacher | 27 | 21.77% | 2 | 22.22% |
Li Zefan | 8 | 6.45% | 1 | 11.11% |
David Chinner | 3 | 2.42% | 1 | 11.11% |
Dave Chinner | 2 | 1.61% | 1 | 11.11% |
Jan Tulak | 1 | 0.81% | 1 | 11.11% |
Total | 124 | 100.00% | 9 | 100.00% |
int
xfs_attrmulti_attr_remove(
struct inode *inode,
unsigned char *name,
__uint32_t flags)
{
int error;
if (IS_IMMUTABLE(inode) || IS_APPEND(inode))
return -EPERM;
error = xfs_attr_remove(XFS_I(inode), name, flags);
if (!error)
xfs_forget_acl(inode, name, flags);
return error;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Christoph Hellwig | 44 | 64.71% | 3 | 50.00% |
Andreas Gruenbacher | 22 | 32.35% | 1 | 16.67% |
David Chinner | 1 | 1.47% | 1 | 16.67% |
Dave Chinner | 1 | 1.47% | 1 | 16.67% |
Total | 68 | 100.00% | 6 | 100.00% |
STATIC int
xfs_attrmulti_by_handle(
struct file *parfilp,
void __user *arg)
{
int error;
xfs_attr_multiop_t *ops;
xfs_fsop_attrmulti_handlereq_t am_hreq;
struct dentry *dentry;
unsigned int i, size;
unsigned char *attr_name;
if (!capable(CAP_SYS_ADMIN))
return -EPERM;
if (copy_from_user(&am_hreq, arg, sizeof(xfs_fsop_attrmulti_handlereq_t)))
return -EFAULT;
/* overflow check */
if (am_hreq.opcount >= INT_MAX / sizeof(xfs_attr_multiop_t))
return -E2BIG;
dentry = xfs_handlereq_to_dentry(parfilp, &am_hreq.hreq);
if (IS_ERR(dentry))
return PTR_ERR(dentry);
error = -E2BIG;
size = am_hreq.opcount * sizeof(xfs_attr_multiop_t);
if (!size || size > 16 * PAGE_SIZE)
goto out_dput;
ops = memdup_user(am_hreq.ops, size);
if (IS_ERR(ops)) {
error = PTR_ERR(ops);
goto out_dput;
}
error = -ENOMEM;
attr_name = kmalloc(MAXNAMELEN, GFP_KERNEL);
if (!attr_name)
goto out_kfree_ops;
error = 0;
for (i = 0; i < am_hreq.opcount; i++) {
ops[i].am_error = strncpy_from_user((char *)attr_name,
ops[i].am_attrname, MAXNAMELEN);
if (ops[i].am_error == 0 || ops[i].am_error == MAXNAMELEN)
error = -ERANGE;
if (ops[i].am_error < 0)
break;
switch (ops[i].am_opcode) {
case ATTR_OP_GET:
ops[i].am_error = xfs_attrmulti_attr_get(
d_inode(dentry), attr_name,
ops[i].am_attrvalue, &ops[i].am_length,
ops[i].am_flags);
break;
case ATTR_OP_SET:
ops[i].am_error = mnt_want_write_file(parfilp);
if (ops[i].am_error)
break;
ops[i].am_error = xfs_attrmulti_attr_set(
d_inode(dentry), attr_name,
ops[i].am_attrvalue, ops[i].am_length,
ops[i].am_flags);
mnt_drop_write_file(parfilp);
break;
case ATTR_OP_REMOVE:
ops[i].am_error = mnt_want_write_file(parfilp);
if (ops[i].am_error)
break;
ops[i].am_error = xfs_attrmulti_attr_remove(
d_inode(dentry), attr_name,
ops[i].am_flags);
mnt_drop_write_file(parfilp);
break;
default:
ops[i].am_error = -EINVAL;
}
}
if (copy_to_user(am_hreq.ops, ops, size))
error = -EFAULT;
kfree(attr_name);
out_kfree_ops:
kfree(ops);
out_dput:
dput(dentry);
return error;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Christoph Hellwig | 370 | 72.55% | 4 | 26.67% |
Dave Hansen | 54 | 10.59% | 1 | 6.67% |
Nathan Scott | 28 | 5.49% | 2 | 13.33% |
Zhitong Wang | 18 | 3.53% | 1 | 6.67% |
Li Zefan | 13 | 2.55% | 1 | 6.67% |
David Howells | 9 | 1.76% | 1 | 6.67% |
Dave Chinner | 5 | 0.98% | 1 | 6.67% |
David Chinner | 5 | 0.98% | 1 | 6.67% |
Al Viro | 4 | 0.78% | 2 | 13.33% |
Tuomas Tynkkynen | 4 | 0.78% | 1 | 6.67% |
Total | 510 | 100.00% | 15 | 100.00% |
int
xfs_ioc_space(
struct file *filp,
unsigned int cmd,
xfs_flock64_t *bf)
{
struct inode *inode = file_inode(filp);
struct xfs_inode *ip = XFS_I(inode);
struct iattr iattr;
enum xfs_prealloc_flags flags = 0;
uint iolock = XFS_IOLOCK_EXCL;
int error;
/*
* Only allow the sys admin to reserve space unless
* unwritten extents are enabled.
*/
if (!xfs_sb_version_hasextflgbit(&ip->i_mount->m_sb) &&
!capable(CAP_SYS_ADMIN))
return -EPERM;
if (inode->i_flags & (S_IMMUTABLE|S_APPEND))
return -EPERM;
if (!(filp->f_mode & FMODE_WRITE))
return -EBADF;
if (!S_ISREG(inode->i_mode))
return -EINVAL;
if (filp->f_flags & O_DSYNC)
flags |= XFS_PREALLOC_SYNC;
if (filp->f_mode & FMODE_NOCMTIME)
flags |= XFS_PREALLOC_INVISIBLE;
error = mnt_want_write_file(filp);
if (error)
return error;
xfs_ilock(ip, iolock);
error = xfs_break_layouts(inode, &iolock);
if (error)
goto out_unlock;
xfs_ilock(ip, XFS_MMAPLOCK_EXCL);
iolock |= XFS_MMAPLOCK_EXCL;
switch (bf->l_whence) {
case 0: /*SEEK_SET*/
break;
case 1: /*SEEK_CUR*/
bf->l_start += filp->f_pos;
break;
case 2: /*SEEK_END*/
bf->l_start += XFS_ISIZE(ip);
break;
default:
error = -EINVAL;
goto out_unlock;
}
/*
* length of <= 0 for resv/unresv/zero is invalid. length for
* alloc/free is ignored completely and we have no idea what userspace
* might have set it to, so set it to zero to allow range
* checks to pass.
*/
switch (cmd) {
case XFS_IOC_ZERO_RANGE:
case XFS_IOC_RESVSP:
case XFS_IOC_RESVSP64:
case XFS_IOC_UNRESVSP:
case XFS_IOC_UNRESVSP64:
if (bf->l_len <= 0) {
error = -EINVAL;
goto out_unlock;
}
break;
default:
bf->l_len = 0;
break;
}
if (bf->l_start < 0 ||
bf->l_start > inode->i_sb->s_maxbytes ||
bf->l_start + bf->l_len < 0 ||
bf->l_start + bf->l_len >= inode->i_sb->s_maxbytes) {
error = -EINVAL;
goto out_unlock;
}
switch (cmd) {
case XFS_IOC_ZERO_RANGE:
flags |= XFS_PREALLOC_SET;
error = xfs_zero_file_space(ip, bf->l_start, bf->l_len);
break;
case XFS_IOC_RESVSP:
case XFS_IOC_RESVSP64:
flags |= XFS_PREALLOC_SET;
error = xfs_alloc_file_space(ip, bf->l_start, bf->l_len,
XFS_BMAPI_PREALLOC);
break;
case XFS_IOC_UNRESVSP:
case XFS_IOC_UNRESVSP64:
error = xfs_free_file_space(ip, bf->l_start, bf->l_len);
break;
case XFS_IOC_ALLOCSP:
case XFS_IOC_ALLOCSP64:
case XFS_IOC_FREESP:
case XFS_IOC_FREESP64:
flags |= XFS_PREALLOC_CLEAR;
if (bf->l_start > XFS_ISIZE(ip)) {
error = xfs_alloc_file_space(ip, XFS_ISIZE(ip),
bf->l_start - XFS_ISIZE(ip), 0);
if (error)
goto out_unlock;
}
iattr.ia_valid = ATTR_SIZE;
iattr.ia_size = bf->l_start;
error = xfs_vn_setattr_size(file_dentry(filp), &iattr);
break;
default:
ASSERT(0);
error = -EINVAL;
}
if (error)
goto out_unlock;
error = xfs_update_prealloc_flags(ip, flags);
out_unlock:
xfs_iunlock(ip, iolock);
mnt_drop_write_file(filp);
return error;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Christoph Hellwig | 475 | 85.13% | 9 | 47.37% |
Eric Sandeen | 27 | 4.84% | 2 | 10.53% |
Dave Chinner | 19 | 3.41% | 3 | 15.79% |
Jan Kara | 16 | 2.87% | 2 | 10.53% |
Nathan Scott | 16 | 2.87% | 2 | 10.53% |
Alexey Dobriyan | 5 | 0.90% | 1 | 5.26% |
Total | 558 | 100.00% | 19 | 100.00% |
STATIC int
xfs_ioc_bulkstat(
xfs_mount_t *mp,
unsigned int cmd,
void __user *arg)
{
xfs_fsop_bulkreq_t bulkreq;
int count; /* # of records returned */
xfs_ino_t inlast; /* last inode number */
int done;
int error;
/* done = 1 if there are more stats to get and if bulkstat */
/* should be called again (unused here, but used in dmapi) */
if (!capable(CAP_SYS_ADMIN))
return -EPERM;
if (XFS_FORCED_SHUTDOWN(mp))
return -EIO;
if (copy_from_user(&bulkreq, arg, sizeof(xfs_fsop_bulkreq_t)))
return -EFAULT;
if (copy_from_user(&inlast, bulkreq.lastip, sizeof(__s64)))
return -EFAULT;
if ((count = bulkreq.icount) <= 0)
return -EINVAL;
if (bulkreq.ubuffer == NULL)
return -EINVAL;
if (cmd == XFS_IOC_FSINUMBERS)
error = xfs_inumbers(mp, &inlast, &count,
bulkreq.ubuffer, xfs_inumbers_fmt);
else if (cmd == XFS_IOC_FSBULKSTAT_SINGLE)
error = xfs_bulkstat_one(mp, inlast, bulkreq.ubuffer,
sizeof(xfs_bstat_t), NULL, &done);
else /* XFS_IOC_FSBULKSTAT */
error = xfs_bulkstat(mp, &inlast, &count, xfs_bulkstat_one,
sizeof(xfs_bstat_t), bulkreq.ubuffer,
&done);
if (error)
return error;
if (bulkreq.ocount != NULL) {
if (copy_to_user(bulkreq.lastip, &inlast,
sizeof(xfs_ino_t)))
return -EFAULT;
if (copy_to_user(bulkreq.ocount, &count, sizeof(count)))
return -EFAULT;
}
return 0;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Christoph Hellwig | 257 | 93.45% | 2 | 33.33% |
Lachlan McIlroy | 12 | 4.36% | 1 | 16.67% |
Nathan Scott | 4 | 1.45% | 2 | 33.33% |
Michal Marek | 2 | 0.73% | 1 | 16.67% |
Total | 275 | 100.00% | 6 | 100.00% |
STATIC int
xfs_ioc_fsgeometry_v1(
xfs_mount_t *mp,
void __user *arg)
{
xfs_fsop_geom_t fsgeo;
int error;
error = xfs_fs_geometry(mp, &fsgeo, 3);
if (error)
return error;
/*
* Caller should have passed an argument of type
* xfs_fsop_geom_v1_t. This is a proper subset of the
* xfs_fsop_geom_t that xfs_fs_geometry() fills in.
*/
if (copy_to_user(arg, &fsgeo, sizeof(xfs_fsop_geom_v1_t)))
return -EFAULT;
return 0;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Christoph Hellwig | 56 | 88.89% | 1 | 25.00% |
Nathan Scott | 4 | 6.35% | 2 | 50.00% |
Alex Elder | 3 | 4.76% | 1 | 25.00% |
Total | 63 | 100.00% | 4 | 100.00% |
STATIC int
xfs_ioc_fsgeometry(
xfs_mount_t *mp,
void __user *arg)
{
xfs_fsop_geom_t fsgeo;
int error;
error = xfs_fs_geometry(mp, &fsgeo, 4);
if (error)
return error;
if (copy_to_user(arg, &fsgeo, sizeof(fsgeo)))
return -EFAULT;
return 0;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Christoph Hellwig | 58 | 93.55% | 1 | 33.33% |
Nathan Scott | 4 | 6.45% | 2 | 66.67% |
Total | 62 | 100.00% | 3 | 100.00% |
/*
* Linux extended inode flags interface.
*/
STATIC unsigned int
xfs_merge_ioc_xflags(
unsigned int flags,
unsigned int start)
{
unsigned int xflags = start;
if (flags & FS_IMMUTABLE_FL)
xflags |= FS_XFLAG_IMMUTABLE;
else
xflags &= ~FS_XFLAG_IMMUTABLE;
if (flags & FS_APPEND_FL)
xflags |= FS_XFLAG_APPEND;
else
xflags &= ~FS_XFLAG_APPEND;
if (flags & FS_SYNC_FL)
xflags |= FS_XFLAG_SYNC;
else
xflags &= ~FS_XFLAG_SYNC;
if (flags & FS_NOATIME_FL)
xflags |= FS_XFLAG_NOATIME;
else
xflags &= ~FS_XFLAG_NOATIME;
if (flags & FS_NODUMP_FL)
xflags |= FS_XFLAG_NODUMP;
else
xflags &= ~FS_XFLAG_NODUMP;
return xflags;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Nathan Scott | 89 | 85.58% | 1 | 33.33% |
Dave Chinner | 10 | 9.62% | 1 | 33.33% |
Eric Sandeen | 5 | 4.81% | 1 | 33.33% |
Total | 104 | 100.00% | 3 | 100.00% |
STATIC unsigned int
xfs_di2lxflags(
__uint16_t di_flags)
{
unsigned int flags = 0;
if (di_flags & XFS_DIFLAG_IMMUTABLE)
flags |= FS_IMMUTABLE_FL;
if (di_flags & XFS_DIFLAG_APPEND)
flags |= FS_APPEND_FL;
if (di_flags & XFS_DIFLAG_SYNC)
flags |= FS_SYNC_FL;
if (di_flags & XFS_DIFLAG_NOATIME)
flags |= FS_NOATIME_FL;
if (di_flags & XFS_DIFLAG_NODUMP)
flags |= FS_NODUMP_FL;
return flags;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Nathan Scott | 64 | 92.75% | 2 | 66.67% |
Eric Sandeen | 5 | 7.25% | 1 | 33.33% |
Total | 69 | 100.00% | 3 | 100.00% |
STATIC int
xfs_ioc_fsgetxattr(
xfs_inode_t *ip,
int attr,
void __user *arg)
{
struct fsxattr fa;
memset(&fa, 0, sizeof(struct fsxattr));
xfs_ilock(ip, XFS_ILOCK_SHARED);
fa.fsx_xflags = xfs_ip2xflags(ip);
fa.fsx_extsize = ip->i_d.di_extsize << ip->i_mount->m_sb.sb_blocklog;
fa.fsx_cowextsize = ip->i_d.di_cowextsize <<
ip->i_mount->m_sb.sb_blocklog;
fa.fsx_projid = xfs_get_projid(ip);
if (attr) {
if (ip->i_afp) {
if (ip->i_afp->if_flags & XFS_IFEXTENTS)
fa.fsx_nextents = xfs_iext_count(ip->i_afp);
else
fa.fsx_nextents = ip->i_d.di_anextents;
} else
fa.fsx_nextents = 0;
} else {
if (ip->i_df.if_flags & XFS_IFEXTENTS)
fa.fsx_nextents = xfs_iext_count(&ip->i_df);
else
fa.fsx_nextents = ip->i_d.di_nextents;
}
xfs_iunlock(ip, XFS_ILOCK_SHARED);
if (copy_to_user(arg, &fa, sizeof(fa)))
return -EFAULT;
return 0;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Christoph Hellwig | 174 | 80.93% | 2 | 28.57% |
Darrick J. Wong | 18 | 8.37% | 1 | 14.29% |
Dan Rosenberg | 14 | 6.51% | 1 | 14.29% |
Eric Sandeen | 5 | 2.33% | 1 | 14.29% |
Arkadiusz Miskiewicz | 3 | 1.40% | 1 | 14.29% |
Nathan Scott | 1 | 0.47% | 1 | 14.29% |
Total | 215 | 100.00% | 7 | 100.00% |
STATIC void
xfs_set_diflags(
struct xfs_inode *ip,
unsigned int xflags)
{
unsigned int di_flags;
uint64_t di_flags2;
/* can't set PREALLOC this way, just preserve it */
di_flags = (ip->i_d.di_flags & XFS_DIFLAG_PREALLOC);
if (xflags & FS_XFLAG_IMMUTABLE)
di_flags |= XFS_DIFLAG_IMMUTABLE;
if (xflags & FS_XFLAG_APPEND)
di_flags |= XFS_DIFLAG_APPEND;
if (xflags & FS_XFLAG_SYNC)
di_flags |= XFS_DIFLAG_SYNC;
if (xflags & FS_XFLAG_NOATIME)
di_flags |= XFS_DIFLAG_NOATIME;
if (xflags & FS_XFLAG_NODUMP)
di_flags |= XFS_DIFLAG_NODUMP;
if (xflags & FS_XFLAG_NODEFRAG)
di_flags |= XFS_DIFLAG_NODEFRAG;
if (xflags & FS_XFLAG_FILESTREAM)
di_flags |= XFS_DIFLAG_FILESTREAM;
if (S_ISDIR(VFS_I(ip)->i_mode)) {
if (xflags & FS_XFLAG_RTINHERIT)
di_flags |= XFS_DIFLAG_RTINHERIT;
if (xflags & FS_XFLAG_NOSYMLINKS)
di_flags |= XFS_DIFLAG_NOSYMLINKS;
if (xflags & FS_XFLAG_EXTSZINHERIT)
di_flags |= XFS_DIFLAG_EXTSZINHERIT;
if (xflags & FS_XFLAG_PROJINHERIT)
di_flags |= XFS_DIFLAG_PROJINHERIT;
} else if (S_ISREG(VFS_I(ip)->i_mode)) {
if (xflags & FS_XFLAG_REALTIME)
di_flags |= XFS_DIFLAG_REALTIME;
if (xflags & FS_XFLAG_EXTSIZE)
di_flags |= XFS_DIFLAG_EXTSIZE;
}
ip->i_d.di_flags = di_flags;
/* diflags2 only valid for v3 inodes. */
if (ip->i_d.di_version < 3)
return;
di_flags2 = (ip->i_d.di_flags2 & XFS_DIFLAG2_REFLINK);
if (xflags & FS_XFLAG_DAX)
di_flags2 |= XFS_DIFLAG2_DAX;
if (xflags & FS_XFLAG_COWEXTSIZE)
di_flags2 |= XFS_DIFLAG2_COWEXTSIZE;
ip->i_d.di_flags2 = di_flags2;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Christoph Hellwig | 135 | 53.15% | 3 | 23.08% |
Dave Chinner | 66 | 25.98% | 4 | 30.77% |
Nathan Scott | 24 | 9.45% | 3 | 23.08% |
Darrick J. Wong | 19 | 7.48% | 1 | 7.69% |
Al Viro | 6 | 2.36% | 1 | 7.69% |
Lachlan McIlroy | 4 | 1.57% | 1 | 7.69% |
Total | 254 | 100.00% | 13 | 100.00% |
STATIC void
xfs_diflags_to_linux(
struct xfs_inode *ip)
{
struct inode *inode = VFS_I(ip);
unsigned int xflags = xfs_ip2xflags(ip);
if (xflags & FS_XFLAG_IMMUTABLE)
inode->i_flags |= S_IMMUTABLE;
else
inode->i_flags &= ~S_IMMUTABLE;
if (xflags & FS_XFLAG_APPEND)
inode->i_flags |= S_APPEND;
else
inode->i_flags &= ~S_APPEND;
if (xflags & FS_XFLAG_SYNC)
inode->i_flags |= S_SYNC;
else
inode->i_flags &= ~S_SYNC;
if (xflags & FS_XFLAG_NOATIME)
inode->i_flags |= S_NOATIME;
else
inode->i_flags &= ~S_NOATIME;
if (xflags & FS_XFLAG_DAX)
inode->i_flags |= S_DAX;
else
inode->i_flags &= ~S_DAX;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Christoph Hellwig | 105 | 80.77% | 1 | 25.00% |
Dave Chinner | 24 | 18.46% | 2 | 50.00% |
David Chinner | 1 | 0.77% | 1 | 25.00% |
Total | 130 | 100.00% | 4 | 100.00% |
static int
xfs_ioctl_setattr_xflags(
struct xfs_trans *tp,
struct xfs_inode *ip,
struct fsxattr *fa)
{
struct xfs_mount *mp = ip->i_mount;
/* Can't change realtime flag if any extents are allocated. */
if ((ip->i_d.di_nextents || ip->i_delayed_blks) &&
XFS_IS_REALTIME_INODE(ip) != (fa->fsx_xflags & FS_XFLAG_REALTIME))
return -EINVAL;
/* If realtime flag is set then must have realtime device */
if (fa->fsx_xflags & FS_XFLAG_REALTIME) {
if (mp->m_sb.sb_rblocks == 0 || mp->m_sb.sb_rextsize == 0 ||
(ip->i_d.di_extsize % mp->m_sb.sb_rextsize))
return -EINVAL;
}
/* Clear reflink if we are actually able to set the rt flag. */
if ((fa->fsx_xflags & FS_XFLAG_REALTIME) && xfs_is_reflink_inode(ip))
ip->i_d.di_flags2 &= ~XFS_DIFLAG2_REFLINK;
/* Don't allow us to set DAX mode for a reflinked file for now. */
if ((fa->fsx_xflags & FS_XFLAG_DAX) && xfs_is_reflink_inode(ip))
return -EINVAL;
/*
* Can't modify an immutable/append-only file unless
* we have appropriate permission.
*/
if (((ip->i_d.di_flags & (XFS_DIFLAG_IMMUTABLE | XFS_DIFLAG_APPEND)) ||
(fa->fsx_xflags & (FS_XFLAG_IMMUTABLE | FS_XFLAG_APPEND))) &&
!capable(CAP_LINUX_IMMUTABLE))
return -EPERM;
xfs_set_diflags(ip, fa->fsx_xflags);
xfs_diflags_to_linux(ip);
xfs_trans_ichgtime(tp, ip, XFS_ICHGTIME_CHG);
xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
XFS_STATS_INC(mp, xs_ig_attrchg);
return 0;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Dave Chinner | 113 | 47.68% | 3 | 27.27% |
Christoph Hellwig | 58 | 24.47% | 1 | 9.09% |
Darrick J. Wong | 45 | 18.99% | 3 | 27.27% |
Arkadiusz Miskiewicz | 18 | 7.59% | 2 | 18.18% |
Bill O'Donnell | 2 | 0.84% | 1 | 9.09% |
Dwight Engen | 1 | 0.42% | 1 | 9.09% |
Total | 237 | 100.00% | 11 | 100.00% |
/*
* If we are changing DAX flags, we have to ensure the file is clean and any
* cached objects in the address space are invalidated and removed. This
* requires us to lock out other IO and page faults similar to a truncate
* operation. The locks need to be held until the transaction has been committed
* so that the cache invalidation is atomic with respect to the DAX flag
* manipulation.
*/
static int
xfs_ioctl_setattr_dax_invalidate(
struct xfs_inode *ip,
struct fsxattr *fa,
int *join_flags)
{
struct inode *inode = VFS_I(ip);
int error;
*join_flags = 0;
/*
* It is only valid to set the DAX flag on regular files and
* directories on filesystems where the block size is equal to the page
* size. On directories it serves as an inherit hint.
*/
if (fa->fsx_xflags & FS_XFLAG_DAX) {
if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode)))
return -EINVAL;
if (ip->i_mount->m_sb.sb_blocksize != PAGE_SIZE)
return -EINVAL;
}
/* If the DAX state is not changing, we have nothing to do here. */
if ((fa->fsx_xflags & FS_XFLAG_DAX) && IS_DAX(inode))
return 0;
if (!(fa->fsx_xflags & FS_XFLAG_DAX) && !IS_DAX(inode))
return 0;
/* lock, flush and invalidate mapping in preparation for flag change */
xfs_ilock(ip, XFS_MMAPLOCK_EXCL | XFS_IOLOCK_EXCL);
error = filemap_write_and_wait(inode->i_mapping);
if (error)
goto out_unlock;
error = invalidate_inode_pages2(inode->i_mapping);
if (error)
goto out_unlock;
*join_flags = XFS_MMAPLOCK_EXCL | XFS_IOLOCK_EXCL;
return 0;
out_unlock:
xfs_iunlock(ip, XFS_MMAPLOCK_EXCL | XFS_IOLOCK_EXCL);
return error;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Dave Chinner | 175 | 90.67% | 4 | 57.14% |
Christoph Hellwig | 16 | 8.29% | 1 | 14.29% |
Dwight Engen | 1 | 0.52% | 1 | 14.29% |
Bill O'Donnell | 1 | 0.52% | 1 | 14.29% |
Total | 193 | 100.00% | 7 | 100.00% |
/*
* Set up the transaction structure for the setattr operation, checking that we
* have permission to do so. On success, return a clean transaction and the
* inode locked exclusively ready for further operation specific checks. On
* failure, return an error without modifying or locking the inode.
*
* The inode might already be IO locked on call. If this is the case, it is
* indicated in @join_flags and we take full responsibility for ensuring they
* are unlocked from now on. Hence if we have an error here, we still have to
* unlock them. Otherwise, once they are joined to the transaction, they will
* be unlocked on commit/cancel.
*/
static struct xfs_trans *
xfs_ioctl_setattr_get_trans(
struct xfs_inode *ip,
int join_flags)
{
struct xfs_mount *mp = ip->i_mount;
struct xfs_trans *tp;
int error = -EROFS;
if (mp->m_flags & XFS_MOUNT_RDONLY)
goto out_unlock;
error = -EIO;
if (XFS_FORCED_SHUTDOWN(mp))
goto out_unlock;
error = xfs_trans_alloc(mp, &M_RES(mp)->tr_ichange, 0, 0, 0, &tp);
if (error)
return ERR_PTR(error);
xfs_ilock(ip, XFS_ILOCK_EXCL);
xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL | join_flags);
join_flags = 0;
/*
* CAP_FOWNER overrides the following restrictions:
*
* The user ID of the calling process must be equal to the file owner
* ID, except in cases where the CAP_FSETID capability is applicable.
*/
if (!inode_owner_or_capable(VFS_I(ip))) {
error = -EPERM;
goto out_cancel;
}
if (mp->m_flags & XFS_MOUNT_WSYNC)
xfs_trans_set_sync(tp);
return tp;
out_cancel:
xfs_trans_cancel(tp);
out_unlock:
if (join_flags)
xfs_iunlock(ip, join_flags);
return ERR_PTR(error);
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Dave Chinner | 135 | 74.18% | 3 | 37.50% |
Christoph Hellwig | 42 | 23.08% | 3 | 37.50% |
Dwight Engen | 4 | 2.20% | 1 | 12.50% |
Arkadiusz Miskiewicz | 1 | 0.55% | 1 | 12.50% |
Total | 182 | 100.00% | 8 | 100.00% |
/*
* extent size hint validation is somewhat cumbersome. Rules are:
*
* 1. extent size hint is only valid for directories and regular files
* 2. FS_XFLAG_EXTSIZE is only valid for regular files
* 3. FS_XFLAG_EXTSZINHERIT is only valid for directories.
* 4. can only be changed on regular files if no extents are allocated
* 5. can be changed on directories at any time
* 6. extsize hint of 0 turns off hints, clears inode flags.
* 7. Extent size must be a multiple of the appropriate block size.
* 8. for non-realtime files, the extent size hint must be limited
* to half the AG size to avoid alignment extending the extent beyond the
* limits of the AG.
*/
static int
xfs_ioctl_setattr_check_extsize(
struct xfs_inode *ip,
struct fsxattr *fa)
{
struct xfs_mount *mp = ip->i_mount;
if ((fa->fsx_xflags & FS_XFLAG_EXTSIZE) && !S_ISREG(VFS_I(ip)->i_mode))
return -EINVAL;
if ((fa->fsx_xflags & FS_XFLAG_EXTSZINHERIT) &&
!S_ISDIR(VFS_I(ip)->i_mode))
return -EINVAL;
if (S_ISREG(VFS_I(ip)->i_mode) && ip->i_d.di_nextents &&
((ip->i_d.di_extsize << mp->m_sb.sb_blocklog) != fa->fsx_extsize))
return -EINVAL;
if (fa->fsx_extsize != 0) {
xfs_extlen_t size;
xfs_fsblock_t extsize_fsb;
extsize_fsb = XFS_B_TO_FSB(mp, fa->fsx_extsize);
if (extsize_fsb > MAXEXTLEN)
return -EINVAL;
if (XFS_IS_REALTIME_INODE(ip) ||
(fa->fsx_xflags & FS_XFLAG_REALTIME)) {
size = mp->m_sb.sb_rextsize << mp->m_sb.sb_blocklog;
} else {
size = mp->m_sb.sb_blocksize;
if (extsize_fsb > mp->m_sb.sb_agblocks / 2)
return -EINVAL;
}
if (fa->fsx_extsize % size)
return -EINVAL;
} else
fa->fsx_xflags &= ~(FS_XFLAG_EXTSIZE | FS_XFLAG_EXTSZINHERIT);
return 0;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Dave Chinner | 128 | 53.56% | 5 | 62.50% |
Christoph Hellwig | 65 | 27.20% | 1 | 12.50% |
Iustin Pop | 45 | 18.83% | 1 | 12.50% |
Fengguang Wu | 1 | 0.42% | 1 | 12.50% |
Total | 239 | 100.00% | 8 | 100.00% |
/*
* CoW extent size hint validation rules are:
*
* 1. CoW extent size hint can only be set if reflink is enabled on the fs.
* The inode does not have to have any shared blocks, but it must be a v3.
* 2. FS_XFLAG_COWEXTSIZE is only valid for directories and regular files;
* for a directory, the hint is propagated to new files.
* 3. Can be changed on files & directories at any time.
* 4. CoW extsize hint of 0 turns off hints, clears inode flags.
* 5. Extent size must be a multiple of the appropriate block size.
* 6. The extent size hint must be limited to half the AG size to avoid
* alignment extending the extent beyond the limits of the AG.
*/
static int
xfs_ioctl_setattr_check_cowextsize(
struct xfs_inode *ip,
struct fsxattr *fa)
{
struct xfs_mount *mp = ip->i_mount;
if (!(fa->fsx_xflags & FS_XFLAG_COWEXTSIZE))
return 0;
if (!xfs_sb_version_hasreflink(&ip->i_mount->m_sb) ||
ip->i_d.di_version != 3)
return -EINVAL;
if (!S_ISREG(VFS_I(ip)->i_mode) && !S_ISDIR(VFS_I(ip)->i_mode))
return -EINVAL;
if (fa->fsx_cowextsize != 0) {
xfs_extlen_t size;
xfs_fsblock_t cowextsize_fsb;
cowextsize_fsb = XFS_B_TO_FSB(mp, fa->fsx_cowextsize);
if (cowextsize_fsb > MAXEXTLEN)
return -EINVAL;
size = mp->m_sb.sb_blocksize;
if (cowextsize_fsb > mp->m_sb.sb_agblocks / 2)
return -EINVAL;
if (fa->fsx_cowextsize % size)
return -EINVAL;
} else
fa->fsx_xflags &= ~FS_XFLAG_COWEXTSIZE;
return 0;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Darrick J. Wong | 176 | 100.00% | 1 | 100.00% |
Total | 176 | 100.00% | 1 | 100.00% |
static int
xfs_ioctl_setattr_check_projid(
struct xfs_inode *ip,
struct fsxattr *fa)
{
/* Disallow 32bit project ids if projid32bit feature is not enabled. */
if (fa->fsx_projid > (__uint16_t)-1 &&
!xfs_sb_version_hasprojid32bit(&ip->i_mount->m_sb))
return -EINVAL;
/*
* Project Quota ID state is only allowed to change from within the init
* namespace. Enforce that restriction only if we are trying to change
* the quota ID state. Everything else is allowed in user namespaces.
*/
if (current_user_ns() == &init_user_ns)
return 0;
if (xfs_get_projid(ip) != fa->fsx_projid)
return -EINVAL;
if ((fa->fsx_xflags & FS_XFLAG_PROJINHERIT) !=
(ip->i_d.di_flags & XFS_DIFLAG_PROJINHERIT))
return -EINVAL;
return 0;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Christoph Hellwig | 37 | 37.76% | 1 | 12.50% |
Dave Chinner | 29 | 29.59% | 3 | 37.50% |
Arkadiusz Miskiewicz | 20 | 20.41% | 2 | 25.00% |
David Chinner | 11 | 11.22% | 1 | 12.50% |
Fengguang Wu | 1 | 1.02% | 1 | 12.50% |
Total | 98 | 100.00% | 8 | 100.00% |
STATIC int
xfs_ioctl_setattr(
xfs_inode_t *ip,
struct fsxattr *fa)
{
struct xfs_mount *mp = ip->i_mount;
struct xfs_trans *tp;
struct xfs_dquot *udqp = NULL;
struct xfs_dquot *pdqp = NULL;
struct xfs_dquot *olddquot = NULL;
int code;
int join_flags = 0;
trace_xfs_ioctl_setattr(ip);
code = xfs_ioctl_setattr_check_projid(ip, fa);
if (code)
return code;
/*
* If disk quotas is on, we make sure that the dquots do exist on disk,
* before we start any other transactions. Trying to do this later
* is messy. We don't care to take a readlock to look at the ids
* in inode here, because we can't hold it across the trans_reserve.
* If the IDs do change before we take the ilock, we're covered
* because the i_*dquot fields will get updated anyway.
*/
if (XFS_IS_QUOTA_ON(mp)) {
code = xfs_qm_vop_dqalloc(ip, ip->i_d.di_uid,
ip->i_d.di_gid, fa->fsx_projid,
XFS_QMOPT_PQUOTA, &udqp, NULL, &pdqp);
if (code)
return code;
}
/*
* Changing DAX config may require inode locking for mapping
* invalidation. These need to be held all the way to transaction commit
* or cancel time, so need to be passed through to
* xfs_ioctl_setattr_get_trans() so it can apply them to the join call
* appropriately.
*/
code = xfs_ioctl_setattr_dax_invalidate(ip, fa, &join_flags);
if (code)
goto error_free_dquots;
tp = xfs_ioctl_setattr_get_trans(ip, join_flags);
if (IS_ERR(tp)) {
code = PTR_ERR(tp);
goto error_free_dquots;
}
if (XFS_IS_QUOTA_RUNNING(mp) && XFS_IS_PQUOTA_ON(mp) &&
xfs_get_projid(ip) != fa->fsx_projid) {
code = xfs_qm_vop_chown_reserve(tp, ip, udqp, NULL, pdqp,
capable(CAP_FOWNER) ? XFS_QMOPT_FORCE_RES : 0);
if (code) /* out of quota */
goto error_trans_cancel;
}
code = xfs_ioctl_setattr_check_extsize(ip, fa);
if (code)
goto error_trans_cancel;
code = xfs_ioctl_setattr_check_cowextsize(ip, fa);
if (code)
goto error_trans_cancel;
code = xfs_ioctl_setattr_xflags(tp, ip, fa);
if (code)
goto error_trans_cancel;
/*
* Change file ownership. Must be the owner or privileged. CAP_FSETID
* overrides the following restrictions:
*
* The set-user-ID and set-group-ID bits of a file will be cleared upon
* successful return from chown()
*/
if ((VFS_I(ip)->i_mode & (S_ISUID|S_ISGID)) &&
!capable_wrt_inode_uidgid(VFS_I(ip), CAP_FSETID))
VFS_I(ip)->i_mode &= ~(S_ISUID|S_ISGID);
/* Change the ownerships and register project quota modifications */
if (xfs_get_projid(ip) != fa->fsx_projid) {
if (XFS_IS_QUOTA_RUNNING(mp) && XFS_IS_PQUOTA_ON(mp)) {
olddquot = xfs_qm_vop_chown(tp, ip,
&ip->i_pdquot, pdqp);
}
ASSERT(ip->i_d.di_version > 1);
xfs_set_projid(ip, fa->fsx_projid);
}
/*
* Only set the extent size hint if we've already determined that the
* extent size hint should be set on the inode. If no extent size flags
* are set on the inode then unconditionally clear the extent size hint.
*/
if (ip->i_d.di_flags & (XFS_DIFLAG_EXTSIZE | XFS_DIFLAG_EXTSZINHERIT))
ip->i_d.di_extsize = fa->fsx_extsize >> mp->m_sb.sb_blocklog;
else
ip->i_d.di_extsize = 0;
if (ip->i_d.di_version == 3 &&
(ip->i_d.di_flags2 & XFS_DIFLAG2_COWEXTSIZE))
ip->i_d.di_cowextsize = fa->fsx_cowextsize >>
mp->m_sb.sb_blocklog;
else
ip->i_d.di_cowextsize = 0;
code = xfs_trans_commit(tp);
/*
* Release any dquot(s) the inode had kept before chown.
*/
xfs_qm_dqrele(olddquot);
xfs_qm_dqrele(udqp);
xfs_qm_dqrele(pdqp);
return code;
error_trans_cancel:
xfs_trans_cancel(tp);
error_free_dquots:
xfs_qm_dqrele(udqp);
xfs_qm_dqrele(pdqp);
return code;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Christoph Hellwig | 264 | 50.57% | 4 | 19.05% |
Dave Chinner | 101 | 19.35% | 9 | 42.86% |
David Chinner | 71 | 13.60% | 1 | 4.76% |
Darrick J. Wong | 61 | 11.69% | 1 | 4.76% |
Chandra Seetharaman | 9 | 1.72% | 1 | 4.76% |
Arkadiusz Miskiewicz | 7 | 1.34% | 1 | 4.76% |
Dwight Engen | 6 | 1.15% | 1 | 4.76% |
Andrew Lutomirski | 1 | 0.19% | 1 | 4.76% |
Lachlan McIlroy | 1 | 0.19% | 1 | 4.76% |
Nathan Scott | 1 | 0.19% | 1 | 4.76% |
Total | 522 | 100.00% | 21 | 100.00% |
STATIC int
xfs_ioc_fssetxattr(
xfs_inode_t *ip,
struct file *filp,
void __user *arg)
{
struct fsxattr fa;
int error;
if (copy_from_user(&fa, arg, sizeof(fa)))
return -EFAULT;
error = mnt_want_write_file(filp);
if (error)
return error;
error = xfs_ioctl_setattr(ip, &fa);
mnt_drop_write_file(filp);
return error;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Christoph Hellwig | 32 | 41.03% | 1 | 25.00% |
Jan Kara | 26 | 33.33% | 1 | 25.00% |
Lachlan McIlroy | 19 | 24.36% | 1 | 25.00% |
Nathan Scott | 1 | 1.28% | 1 | 25.00% |
Total | 78 | 100.00% | 4 | 100.00% |
STATIC int
xfs_ioc_getxflags(
xfs_inode_t *ip,
void __user *arg)
{
unsigned int flags;
flags = xfs_di2lxflags(ip->i_d.di_flags);
if (copy_to_user(arg, &flags, sizeof(flags)))
return -EFAULT;
return 0;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Christoph Hellwig | 50 | 96.15% | 1 | 50.00% |
Lachlan McIlroy | 2 | 3.85% | 1 | 50.00% |
Total | 52 | 100.00% | 2 | 100.00% |
STATIC int
xfs_ioc_setxflags(
struct xfs_inode *ip,
struct file *filp,
void __user *arg)
{
struct xfs_trans *tp;
struct fsxattr fa;
unsigned int flags;
int join_flags = 0;
int error;
if (copy_from_user(&flags, arg, sizeof(flags)))
return -EFAULT;
if (flags & ~(FS_IMMUTABLE_FL | FS_APPEND_FL | \
FS_NOATIME_FL | FS_NODUMP_FL | \
FS_SYNC_FL))
return -EOPNOTSUPP;
fa.fsx_xflags = xfs_merge_ioc_xflags(flags, xfs_ip2xflags(ip));
error = mnt_want_write_file(filp);
if (error)
return error;
/*
* Changing DAX config may require inode locking for mapping
* invalidation. These need to be held all the way to transaction commit
* or cancel time, so need to be passed through to
* xfs_ioctl_setattr_get_trans() so it can apply them to the join call
* appropriately.
*/
error = xfs_ioctl_setattr_dax_invalidate(ip, &fa, &join_flags);
if (error)
goto out_drop_write;
tp = xfs_ioctl_setattr_get_trans(ip, join_flags);
if (IS_ERR(tp)) {
error = PTR_ERR(tp);
goto out_drop_write;
}
error = xfs_ioctl_setattr_xflags(tp, ip, &fa);
if (error) {
xfs_trans_cancel(tp);
goto out_drop_write;
}
error = xfs_trans_commit(tp);
out_drop_write:
mnt_drop_write_file(filp);
return error;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Dave Chinner | 85 | 41.67% | 2 | 16.67% |
Nathan Scott | 48 | 23.53% | 3 | 25.00% |
Christoph Hellwig | 32 | 15.69% | 4 | 33.33% |
Jan Kara | 27 | 13.24% | 1 | 8.33% |
Lachlan McIlroy | 7 | 3.43% | 1 | 8.33% |
Eric Sandeen | 5 | 2.45% | 1 | 8.33% |
Total | 204 | 100.00% | 12 | 100.00% |
STATIC int
xfs_getbmap_format(void **ap, struct getbmapx *bmv)
{
struct getbmap __user *base = (struct getbmap __user *)*ap;
/* copy only getbmap portion (not getbmapx) */
if (copy_to_user(base, bmv, sizeof(struct getbmap)))
return -EFAULT;
*ap += sizeof(struct getbmap);
return 0;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Eric Sandeen | 54 | 85.71% | 1 | 20.00% |
Dave Chinner | 7 | 11.11% | 2 | 40.00% |
Nathan Scott | 1 | 1.59% | 1 | 20.00% |
Christoph Hellwig | 1 | 1.59% | 1 | 20.00% |
Total | 63 | 100.00% | 5 | 100.00% |
STATIC int
xfs_ioc_getbmap(
struct file *file,
unsigned int cmd,
void __user *arg)
{
struct getbmapx bmx;
int error;
if (copy_from_user(&bmx, arg, sizeof(struct getbmapx)))
return -EFAULT;
if (bmx.bmv_count < 2)
return -EINVAL;
bmx.bmv_iflags = (cmd == XFS_IOC_GETBMAPA ? BMV_IF_ATTRFORK : 0);
if (file->f_mode & FMODE_NOCMTIME)
bmx.bmv_iflags |= BMV_IF_NO_DMAPI_READ;
error = xfs_getbmap(XFS_I(file_inode(file)), &bmx, xfs_getbmap_format,
(__force struct getbmap *)arg+1);
if (error)
return error;
/* copy back header - only size of getbmap */
if (copy_to_user(arg, &bmx, sizeof(struct getbmap)))
return -EFAULT;
return 0;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Christoph Hellwig | 120 | 82.19% | 3 | 42.86% |
Eric Sandeen | 21 | 14.38% | 1 | 14.29% |
Nathan Scott | 3 | 2.05% | 1 | 14.29% |
Stephen Lord | 1 | 0.68% | 1 | 14.29% |
Dave Chinner | 1 | 0.68% | 1 | 14.29% |
Total | 146 | 100.00% | 7 | 100.00% |
STATIC int
xfs_getbmapx_format(void **ap, struct getbmapx *bmv)
{
struct getbmapx __user *base = (struct getbmapx __user *)*ap;
if (copy_to_user(base, bmv, sizeof(struct getbmapx)))
return -EFAULT;
*ap += sizeof(struct getbmapx);
return 0;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Eric Sandeen | 53 | 85.48% | 1 | 20.00% |
Dave Chinner | 7 | 11.29% | 2 | 40.00% |
Nathan Scott | 1 | 1.61% | 1 | 20.00% |
Christoph Hellwig | 1 | 1.61% | 1 | 20.00% |
Total | 62 | 100.00% | 5 | 100.00% |
STATIC int
xfs_ioc_getbmapx(
struct xfs_inode *ip,
void __user *arg)
{
struct getbmapx bmx;
int error;
if (copy_from_user(&bmx, arg, sizeof(bmx)))
return -EFAULT;
if (bmx.bmv_count < 2)
return -EINVAL;
if (bmx.bmv_iflags & (~BMV_IF_VALID))
return -EINVAL;
error = xfs_getbmap(ip, &bmx, xfs_getbmapx_format,
(__force struct getbmapx *)arg+1);
if (error)
return error;
/* copy back header */
if (copy_to_user(arg, &bmx, sizeof(struct getbmapx)))
return -EFAULT;
return 0;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Christoph Hellwig | 108 | 88.52% | 2 | 40.00% |
Eric Sandeen | 10 | 8.20% | 1 | 20.00% |
Nathan Scott | 3 | 2.46% | 1 | 20.00% |
Dave Chinner | 1 | 0.82% | 1 | 20.00% |
Total | 122 | 100.00% | 5 | 100.00% |
int
xfs_ioc_swapext(
xfs_swapext_t *sxp)
{
xfs_inode_t *ip, *tip;
struct fd f, tmp;
int error = 0;
/* Pull information for the target fd */
f = fdget((int)sxp->sx_fdtarget);
if (!f.file) {
error = -EINVAL;
goto out;
}
if (!(f.file->f_mode & FMODE_WRITE) ||
!(f.file->f_mode & FMODE_READ) ||
(f.file->f_flags & O_APPEND)) {
error = -EBADF;
goto out_put_file;
}
tmp = fdget((int)sxp->sx_fdtmp);
if (!tmp.file) {
error = -EINVAL;
goto out_put_file;
}
if (!(tmp.file->f_mode & FMODE_WRITE) ||
!(tmp.file->f_mode & FMODE_READ) ||
(tmp.file->f_flags & O_APPEND)) {
error = -EBADF;
goto out_put_tmp_file;
}
if (IS_SWAPFILE(file_inode(f.file)) ||
IS_SWAPFILE(file_inode(tmp.file))) {
error = -EINVAL;
goto out_put_tmp_file;
}
/*
* We need to ensure that the fds passed in point to XFS inodes
* before we cast and access them as XFS structures as we have no
* control over what the user passes us here.
*/
if (f.file->f_op != &xfs_file_operations ||
tmp.file->f_op != &xfs_file_operations) {
error = -EINVAL;
goto out_put_tmp_file;
}
ip = XFS_I(file_inode(f.file));
tip = XFS_I(file_inode(tmp.file));
if (ip->i_mount != tip->i_mount) {
error = -EINVAL;
goto out_put_tmp_file;
}
if (ip->i_ino == tip->i_ino) {
error = -EINVAL;
goto out_put_tmp_file;
}
if (XFS_FORCED_SHUTDOWN(ip->i_mount)) {
error = -EIO;
goto out_put_tmp_file;
}
error = xfs_swap_extents(ip, tip, sxp);
out_put_tmp_file:
fdput(tmp);
out_put_file:
fdput(f);
out:
return error;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Dave Chinner | 319 | 91.14% | 2 | 66.67% |
Jann Horn | 31 | 8.86% | 1 | 33.33% |
Total | 350 | 100.00% | 3 | 100.00% |
/*
* Note: some of the ioctl's return positive numbers as a
* byte count indicating success, such as readlink_by_handle.
* So we don't "sign flip" like most other routines. This means
* true errors need to be returned as a negative value.
*/
long
xfs_file_ioctl(
struct file *filp,
unsigned int cmd,
unsigned long p)
{
struct inode *inode = file_inode(filp);
struct xfs_inode *ip = XFS_I(inode);
struct xfs_mount *mp = ip->i_mount;
void __user *arg = (void __user *)p;
int error;
trace_xfs_file_ioctl(ip);
switch (cmd) {
case FITRIM:
return xfs_ioc_trim(mp, arg);
case XFS_IOC_ALLOCSP:
case XFS_IOC_FREESP:
case XFS_IOC_RESVSP:
case XFS_IOC_UNRESVSP:
case XFS_IOC_ALLOCSP64:
case XFS_IOC_FREESP64:
case XFS_IOC_RESVSP64:
case XFS_IOC_UNRESVSP64:
case XFS_IOC_ZERO_RANGE: {
xfs_flock64_t bf;
if (copy_from_user(&bf, arg, sizeof(bf)))
return -EFAULT;
return xfs_ioc_space(filp, cmd, &bf);
}
case XFS_IOC_DIOINFO: {
struct dioattr da;
xfs_buftarg_t *target =
XFS_IS_REALTIME_INODE(ip) ?
mp->m_rtdev_targp : mp->m_ddev_targp;
da.d_mem = da.d_miniosz = target->bt_logical_sectorsize;
da.d_maxiosz = INT_MAX & ~(da.d_miniosz - 1);
if (copy_to_user(arg, &da, sizeof(da)))
return -EFAULT;
return 0;
}
case XFS_IOC_FSBULKSTAT_SINGLE:
case XFS_IOC_FSBULKSTAT:
case XFS_IOC_FSINUMBERS:
return xfs_ioc_bulkstat(mp, cmd, arg);
case XFS_IOC_FSGEOMETRY_V1:
return xfs_ioc_fsgeometry_v1(mp, arg);
case XFS_IOC_FSGEOMETRY:
return xfs_ioc_fsgeometry(mp, arg);
case XFS_IOC_GETVERSION:
return put_user(inode->i_generation, (int __user *)arg);
case XFS_IOC_FSGETXATTR:
return xfs_ioc_fsgetxattr(ip, 0, arg);
case XFS_IOC_FSGETXATTRA:
return xfs_ioc_fsgetxattr(ip, 1, arg);
case XFS_IOC_FSSETXATTR:
return xfs_ioc_fssetxattr(ip, filp, arg);
case XFS_IOC_GETXFLAGS:
return xfs_ioc_getxflags(ip, arg);
case XFS_IOC_SETXFLAGS:
return xfs_ioc_setxflags(ip, filp, arg);
case XFS_IOC_FSSETDM: {
struct fsdmidata dmi;
if (copy_from_user(&dmi, arg, sizeof(dmi)))
return -EFAULT;
error = mnt_want_write_file(filp);
if (error)
return error;
error = xfs_set_dmattrs(ip, dmi.fsd_dmevmask,
dmi.fsd_dmstate);
mnt_drop_write_file(filp);
return error;
}
case XFS_IOC_GETBMAP:
case XFS_IOC_GETBMAPA:
return xfs_ioc_getbmap(filp, cmd, arg);
case XFS_IOC_GETBMAPX:
return xfs_ioc_getbmapx(ip, arg);
case XFS_IOC_FD_TO_HANDLE:
case XFS_IOC_PATH_TO_HANDLE:
case XFS_IOC_PATH_TO_FSHANDLE: {
xfs_fsop_handlereq_t hreq;
if (copy_from_user(&hreq, arg, sizeof(hreq)))
return -EFAULT;
return xfs_find_handle(cmd, &hreq);
}
case XFS_IOC_OPEN_BY_HANDLE: {
xfs_fsop_handlereq_t hreq;
if (copy_from_user(&hreq, arg, sizeof(xfs_fsop_handlereq_t)))
return -EFAULT;
return xfs_open_by_handle(filp, &hreq);
}
case XFS_IOC_FSSETDM_BY_HANDLE:
return xfs_fssetdm_by_handle(filp, arg);
case XFS_IOC_READLINK_BY_HANDLE: {
xfs_fsop_handlereq_t hreq;
if (copy_from_user(&hreq, arg, sizeof(xfs_fsop_handlereq_t)))
return -EFAULT;
return xfs_readlink_by_handle(filp, &hreq);
}
case XFS_IOC_ATTRLIST_BY_HANDLE:
return xfs_attrlist_by_handle(filp, arg);
case XFS_IOC_ATTRMULTI_BY_HANDLE:
return xfs_attrmulti_by_handle(filp, arg);
case XFS_IOC_SWAPEXT: {
struct xfs_swapext sxp;
if (copy_from_user(&sxp, arg, sizeof(xfs_swapext_t)))
return -EFAULT;
error = mnt_want_write_file(filp);
if (error)
return error;
error = xfs_ioc_swapext(&sxp);
mnt_drop_write_file(filp);
return error;
}
case XFS_IOC_FSCOUNTS: {
xfs_fsop_counts_t out;
error = xfs_fs_counts(mp, &out);
if (error)
return error;
if (copy_to_user(arg, &out, sizeof(out)))
return -EFAULT;
return 0;
}
case XFS_IOC_SET_RESBLKS: {
xfs_fsop_resblks_t inout;
__uint64_t in;
if (!capable(CAP_SYS_ADMIN))
return -EPERM;
if (mp->m_flags & XFS_MOUNT_RDONLY)
return -EROFS;
if (copy_from_user(&inout, arg, sizeof(inout)))
return -EFAULT;
error = mnt_want_write_file(filp);
if (error)
return error;
/* input parameter is passed in resblks field of structure */
in = inout.resblks;
error = xfs_reserve_blocks(mp, &in, &inout);
mnt_drop_write_file(filp);
if (error)
return error;
if (copy_to_user(arg, &inout, sizeof(inout)))
return -EFAULT;
return 0;
}
case XFS_IOC_GET_RESBLKS: {
xfs_fsop_resblks_t out;
if (!capable(CAP_SYS_ADMIN))
return -EPERM;
error = xfs_reserve_blocks(mp, NULL, &out);
if (error)
return error;
if (copy_to_user(arg, &out, sizeof(out)))
return -EFAULT;
return 0;
}
case XFS_IOC_FSGROWFSDATA: {
xfs_growfs_data_t in;
if (copy_from_user(&in, arg, sizeof(in)))
return -EFAULT;
error = mnt_want_write_file(filp);
if (error)
return error;
error = xfs_growfs_data(mp, &in);
mnt_drop_write_file(filp);
return error;
}
case XFS_IOC_FSGROWFSLOG: {
xfs_growfs_log_t in;
if (copy_from_user(&in, arg, sizeof(in)))
return -EFAULT;
error = mnt_want_write_file(filp);
if (error)
return error;
error = xfs_growfs_log(mp, &in);
mnt_drop_write_file(filp);
return error;
}
case XFS_IOC_FSGROWFSRT: {
xfs_growfs_rt_t in;
if (copy_from_user(&in, arg, sizeof(in)))
return -EFAULT;
error = mnt_want_write_file(filp);
if (error)
return error;
error = xfs_growfs_rt(mp, &in);
mnt_drop_write_file(filp);
return error;
}
case XFS_IOC_GOINGDOWN: {
__uint32_t in;
if (!capable(CAP_SYS_ADMIN))
return -EPERM;
if (get_user(in, (__uint32_t __user *)arg))
return -EFAULT;
return xfs_fs_goingdown(mp, in);
}
case XFS_IOC_ERROR_INJECTION: {
xfs_error_injection_t in;
if (!capable(CAP_SYS_ADMIN))
return -EPERM;
if (copy_from_user(&in, arg, sizeof(in)))
return -EFAULT;
return xfs_errortag_add(in.errtag, mp);
}
case XFS_IOC_ERROR_CLEARALL:
if (!capable(CAP_SYS_ADMIN))
return -EPERM;
return xfs_errortag_clearall(mp, 1);
case XFS_IOC_FREE_EOFBLOCKS: {
struct xfs_fs_eofblocks eofb;
struct xfs_eofblocks keofb;
if (!capable(CAP_SYS_ADMIN))
return -EPERM;
if (mp->m_flags & XFS_MOUNT_RDONLY)
return -EROFS;
if (copy_from_user(&eofb, arg, sizeof(eofb)))
return -EFAULT;
error = xfs_fs_eofblocks_from_user(&eofb, &keofb);
if (error)
return error;
return xfs_icache_free_eofblocks(mp, &keofb);
}
default:
return -ENOTTY;
}
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Lachlan McIlroy | 863 | 68.87% | 3 | 15.00% |
Eric Sandeen | 132 | 10.53% | 3 | 15.00% |
Jan Kara | 114 | 9.10% | 1 | 5.00% |
Christoph Hellwig | 49 | 3.91% | 5 | 25.00% |
Brian Foster | 43 | 3.43% | 1 | 5.00% |
Dwight Engen | 40 | 3.19% | 2 | 10.00% |
Dave Chinner | 7 | 0.56% | 3 | 15.00% |
Al Viro | 3 | 0.24% | 1 | 5.00% |
Dave Hansen | 2 | 0.16% | 1 | 5.00% |
Total | 1253 | 100.00% | 20 | 100.00% |
Overall Contributors
Person | Tokens | Prop | Commits | CommitProp |
Christoph Hellwig | 4032 | 48.51% | 37 | 24.50% |
Dave Chinner | 1411 | 16.98% | 33 | 21.85% |
Lachlan McIlroy | 908 | 10.93% | 4 | 2.65% |
Nathan Scott | 379 | 4.56% | 10 | 6.62% |
Darrick J. Wong | 355 | 4.27% | 5 | 3.31% |
Eric Sandeen | 331 | 3.98% | 8 | 5.30% |
Jan Kara | 209 | 2.51% | 2 | 1.32% |
David Chinner | 100 | 1.20% | 5 | 3.31% |
Al Viro | 60 | 0.72% | 8 | 5.30% |
Dave Hansen | 56 | 0.67% | 1 | 0.66% |
Andreas Gruenbacher | 52 | 0.63% | 2 | 1.32% |
Dwight Engen | 52 | 0.63% | 3 | 1.99% |
Arkadiusz Miskiewicz | 49 | 0.59% | 2 | 1.32% |
Iustin Pop | 45 | 0.54% | 1 | 0.66% |
Brian Foster | 43 | 0.52% | 1 | 0.66% |
David Howells | 38 | 0.46% | 2 | 1.32% |
Jann Horn | 31 | 0.37% | 1 | 0.66% |
Russell Cattelan | 23 | 0.28% | 1 | 0.66% |
Li Zefan | 21 | 0.25% | 1 | 0.66% |
Zhitong Wang | 18 | 0.22% | 1 | 0.66% |
Dan Rosenberg | 14 | 0.17% | 1 | 0.66% |
Dan Carpenter | 10 | 0.12% | 1 | 0.66% |
Chandra Seetharaman | 9 | 0.11% | 1 | 0.66% |
Vlad Apostolov | 8 | 0.10% | 1 | 0.66% |
Stephen Lord | 7 | 0.08% | 1 | 0.66% |
Alexey Dobriyan | 5 | 0.06% | 1 | 0.66% |
Josef 'Jeff' Sipek | 5 | 0.06% | 1 | 0.66% |
Jie Liu | 4 | 0.05% | 1 | 0.66% |
Yann Droneaud | 4 | 0.05% | 1 | 0.66% |
Tuomas Tynkkynen | 4 | 0.05% | 1 | 0.66% |
Ingo Molnar | 3 | 0.04% | 1 | 0.66% |
Tejun Heo | 3 | 0.04% | 1 | 0.66% |
Jan Tulak | 3 | 0.04% | 2 | 1.32% |
Randy Dunlap | 3 | 0.04% | 1 | 0.66% |
Alex Elder | 3 | 0.04% | 1 | 0.66% |
Bill O'Donnell | 3 | 0.04% | 1 | 0.66% |
Michal Marek | 2 | 0.02% | 1 | 0.66% |
Fengguang Wu | 2 | 0.02% | 1 | 0.66% |
Miklos Szeredi | 2 | 0.02% | 1 | 0.66% |
Hannes Eder | 2 | 0.02% | 1 | 0.66% |
Eryu Guan | 1 | 0.01% | 1 | 0.66% |
Andrew Lutomirski | 1 | 0.01% | 1 | 0.66% |
Total | 8311 | 100.00% | 151 | 100.00% |
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