2 * Copyright (c) 2000-2005 Silicon Graphics, Inc.
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License as
7 * published by the Free Software Foundation.
9 * This program is distributed in the hope that it would be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write the Free Software Foundation,
16 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
20 #include "xfs_format.h"
22 #include "xfs_trans.h"
25 #include "xfs_alloc.h"
26 #include "xfs_mount.h"
27 #include "xfs_bmap_btree.h"
28 #include "xfs_dinode.h"
29 #include "xfs_inode.h"
30 #include "xfs_ioctl.h"
31 #include "xfs_rtalloc.h"
32 #include "xfs_itable.h"
33 #include "xfs_error.h"
36 #include "xfs_bmap_util.h"
37 #include "xfs_buf_item.h"
38 #include "xfs_fsops.h"
39 #include "xfs_discard.h"
40 #include "xfs_quota.h"
41 #include "xfs_inode_item.h"
42 #include "xfs_export.h"
43 #include "xfs_trace.h"
44 #include "xfs_icache.h"
45 #include "xfs_symlink.h"
47 #include <linux/capability.h>
48 #include <linux/dcache.h>
49 #include <linux/mount.h>
50 #include <linux/namei.h>
51 #include <linux/pagemap.h>
52 #include <linux/slab.h>
53 #include <linux/exportfs.h>
56 * xfs_find_handle maps from userspace xfs_fsop_handlereq structure to
57 * a file or fs handle.
59 * XFS_IOC_PATH_TO_FSHANDLE
60 * returns fs handle for a mount point or path within that mount point
61 * XFS_IOC_FD_TO_HANDLE
62 * returns full handle for a FD opened in user space
63 * XFS_IOC_PATH_TO_HANDLE
64 * returns full handle for a path
69 xfs_fsop_handlereq_t
*hreq
)
79 if (cmd
== XFS_IOC_FD_TO_HANDLE
) {
83 inode
= file_inode(f
.file
);
85 error
= user_lpath((const char __user
*)hreq
->path
, &path
);
88 inode
= path
.dentry
->d_inode
;
93 * We can only generate handles for inodes residing on a XFS filesystem,
94 * and only for regular files, directories or symbolic links.
97 if (inode
->i_sb
->s_magic
!= XFS_SB_MAGIC
)
101 if (!S_ISREG(inode
->i_mode
) &&
102 !S_ISDIR(inode
->i_mode
) &&
103 !S_ISLNK(inode
->i_mode
))
107 memcpy(&handle
.ha_fsid
, ip
->i_mount
->m_fixedfsid
, sizeof(xfs_fsid_t
));
109 if (cmd
== XFS_IOC_PATH_TO_FSHANDLE
) {
111 * This handle only contains an fsid, zero the rest.
113 memset(&handle
.ha_fid
, 0, sizeof(handle
.ha_fid
));
114 hsize
= sizeof(xfs_fsid_t
);
118 lock_mode
= xfs_ilock_map_shared(ip
);
119 handle
.ha_fid
.fid_len
= sizeof(xfs_fid_t
) -
120 sizeof(handle
.ha_fid
.fid_len
);
121 handle
.ha_fid
.fid_pad
= 0;
122 handle
.ha_fid
.fid_gen
= ip
->i_d
.di_gen
;
123 handle
.ha_fid
.fid_ino
= ip
->i_ino
;
124 xfs_iunlock_map_shared(ip
, lock_mode
);
126 hsize
= XFS_HSIZE(handle
);
130 if (copy_to_user(hreq
->ohandle
, &handle
, hsize
) ||
131 copy_to_user(hreq
->ohandlen
, &hsize
, sizeof(__s32
)))
137 if (cmd
== XFS_IOC_FD_TO_HANDLE
)
145 * No need to do permission checks on the various pathname components
146 * as the handle operations are privileged.
149 xfs_handle_acceptable(
151 struct dentry
*dentry
)
157 * Convert userspace handle data into a dentry.
160 xfs_handle_to_dentry(
161 struct file
*parfilp
,
162 void __user
*uhandle
,
166 struct xfs_fid64 fid
;
169 * Only allow handle opens under a directory.
171 if (!S_ISDIR(file_inode(parfilp
)->i_mode
))
172 return ERR_PTR(-ENOTDIR
);
174 if (hlen
!= sizeof(xfs_handle_t
))
175 return ERR_PTR(-EINVAL
);
176 if (copy_from_user(&handle
, uhandle
, hlen
))
177 return ERR_PTR(-EFAULT
);
178 if (handle
.ha_fid
.fid_len
!=
179 sizeof(handle
.ha_fid
) - sizeof(handle
.ha_fid
.fid_len
))
180 return ERR_PTR(-EINVAL
);
182 memset(&fid
, 0, sizeof(struct fid
));
183 fid
.ino
= handle
.ha_fid
.fid_ino
;
184 fid
.gen
= handle
.ha_fid
.fid_gen
;
186 return exportfs_decode_fh(parfilp
->f_path
.mnt
, (struct fid
*)&fid
, 3,
187 FILEID_INO32_GEN
| XFS_FILEID_TYPE_64FLAG
,
188 xfs_handle_acceptable
, NULL
);
191 STATIC
struct dentry
*
192 xfs_handlereq_to_dentry(
193 struct file
*parfilp
,
194 xfs_fsop_handlereq_t
*hreq
)
196 return xfs_handle_to_dentry(parfilp
, hreq
->ihandle
, hreq
->ihandlen
);
201 struct file
*parfilp
,
202 xfs_fsop_handlereq_t
*hreq
)
204 const struct cred
*cred
= current_cred();
210 struct dentry
*dentry
;
214 if (!capable(CAP_SYS_ADMIN
))
215 return -XFS_ERROR(EPERM
);
217 dentry
= xfs_handlereq_to_dentry(parfilp
, hreq
);
219 return PTR_ERR(dentry
);
220 inode
= dentry
->d_inode
;
222 /* Restrict xfs_open_by_handle to directories & regular files. */
223 if (!(S_ISREG(inode
->i_mode
) || S_ISDIR(inode
->i_mode
))) {
224 error
= -XFS_ERROR(EPERM
);
228 #if BITS_PER_LONG != 32
229 hreq
->oflags
|= O_LARGEFILE
;
232 permflag
= hreq
->oflags
;
233 fmode
= OPEN_FMODE(permflag
);
234 if ((!(permflag
& O_APPEND
) || (permflag
& O_TRUNC
)) &&
235 (fmode
& FMODE_WRITE
) && IS_APPEND(inode
)) {
236 error
= -XFS_ERROR(EPERM
);
240 if ((fmode
& FMODE_WRITE
) && IS_IMMUTABLE(inode
)) {
241 error
= -XFS_ERROR(EACCES
);
245 /* Can't write directories. */
246 if (S_ISDIR(inode
->i_mode
) && (fmode
& FMODE_WRITE
)) {
247 error
= -XFS_ERROR(EISDIR
);
251 fd
= get_unused_fd_flags(0);
257 path
.mnt
= parfilp
->f_path
.mnt
;
258 path
.dentry
= dentry
;
259 filp
= dentry_open(&path
, hreq
->oflags
, cred
);
263 return PTR_ERR(filp
);
266 if (S_ISREG(inode
->i_mode
)) {
267 filp
->f_flags
|= O_NOATIME
;
268 filp
->f_mode
|= FMODE_NOCMTIME
;
271 fd_install(fd
, filp
);
280 * This is a copy from fs/namei.c:vfs_readlink(), except for removing it's
281 * unused first argument.
296 if (len
> (unsigned) buflen
)
298 if (copy_to_user(buffer
, link
, len
))
306 xfs_readlink_by_handle(
307 struct file
*parfilp
,
308 xfs_fsop_handlereq_t
*hreq
)
310 struct dentry
*dentry
;
315 if (!capable(CAP_SYS_ADMIN
))
316 return -XFS_ERROR(EPERM
);
318 dentry
= xfs_handlereq_to_dentry(parfilp
, hreq
);
320 return PTR_ERR(dentry
);
322 /* Restrict this handle operation to symlinks only. */
323 if (!S_ISLNK(dentry
->d_inode
->i_mode
)) {
324 error
= -XFS_ERROR(EINVAL
);
328 if (copy_from_user(&olen
, hreq
->ohandlen
, sizeof(__u32
))) {
329 error
= -XFS_ERROR(EFAULT
);
333 link
= kmalloc(MAXPATHLEN
+1, GFP_KERNEL
);
335 error
= -XFS_ERROR(ENOMEM
);
339 error
= -xfs_readlink(XFS_I(dentry
->d_inode
), link
);
342 error
= do_readlink(hreq
->ohandle
, olen
, link
);
359 xfs_mount_t
*mp
= ip
->i_mount
;
363 if (!capable(CAP_SYS_ADMIN
))
364 return XFS_ERROR(EPERM
);
366 if (XFS_FORCED_SHUTDOWN(mp
))
367 return XFS_ERROR(EIO
);
369 tp
= xfs_trans_alloc(mp
, XFS_TRANS_SET_DMATTRS
);
370 error
= xfs_trans_reserve(tp
, &M_RES(mp
)->tr_ichange
, 0, 0);
372 xfs_trans_cancel(tp
, 0);
375 xfs_ilock(ip
, XFS_ILOCK_EXCL
);
376 xfs_trans_ijoin(tp
, ip
, XFS_ILOCK_EXCL
);
378 ip
->i_d
.di_dmevmask
= evmask
;
379 ip
->i_d
.di_dmstate
= state
;
381 xfs_trans_log_inode(tp
, ip
, XFS_ILOG_CORE
);
382 error
= xfs_trans_commit(tp
, 0);
388 xfs_fssetdm_by_handle(
389 struct file
*parfilp
,
393 struct fsdmidata fsd
;
394 xfs_fsop_setdm_handlereq_t dmhreq
;
395 struct dentry
*dentry
;
397 if (!capable(CAP_MKNOD
))
398 return -XFS_ERROR(EPERM
);
399 if (copy_from_user(&dmhreq
, arg
, sizeof(xfs_fsop_setdm_handlereq_t
)))
400 return -XFS_ERROR(EFAULT
);
402 error
= mnt_want_write_file(parfilp
);
406 dentry
= xfs_handlereq_to_dentry(parfilp
, &dmhreq
.hreq
);
407 if (IS_ERR(dentry
)) {
408 mnt_drop_write_file(parfilp
);
409 return PTR_ERR(dentry
);
412 if (IS_IMMUTABLE(dentry
->d_inode
) || IS_APPEND(dentry
->d_inode
)) {
413 error
= -XFS_ERROR(EPERM
);
417 if (copy_from_user(&fsd
, dmhreq
.data
, sizeof(fsd
))) {
418 error
= -XFS_ERROR(EFAULT
);
422 error
= -xfs_set_dmattrs(XFS_I(dentry
->d_inode
), fsd
.fsd_dmevmask
,
426 mnt_drop_write_file(parfilp
);
432 xfs_attrlist_by_handle(
433 struct file
*parfilp
,
437 attrlist_cursor_kern_t
*cursor
;
438 xfs_fsop_attrlist_handlereq_t al_hreq
;
439 struct dentry
*dentry
;
442 if (!capable(CAP_SYS_ADMIN
))
443 return -XFS_ERROR(EPERM
);
444 if (copy_from_user(&al_hreq
, arg
, sizeof(xfs_fsop_attrlist_handlereq_t
)))
445 return -XFS_ERROR(EFAULT
);
446 if (al_hreq
.buflen
> XATTR_LIST_MAX
)
447 return -XFS_ERROR(EINVAL
);
450 * Reject flags, only allow namespaces.
452 if (al_hreq
.flags
& ~(ATTR_ROOT
| ATTR_SECURE
))
453 return -XFS_ERROR(EINVAL
);
455 dentry
= xfs_handlereq_to_dentry(parfilp
, &al_hreq
.hreq
);
457 return PTR_ERR(dentry
);
459 kbuf
= kmem_zalloc_large(al_hreq
.buflen
, KM_SLEEP
);
463 cursor
= (attrlist_cursor_kern_t
*)&al_hreq
.pos
;
464 error
= -xfs_attr_list(XFS_I(dentry
->d_inode
), kbuf
, al_hreq
.buflen
,
465 al_hreq
.flags
, cursor
);
469 if (copy_to_user(al_hreq
.buffer
, kbuf
, al_hreq
.buflen
))
480 xfs_attrmulti_attr_get(
483 unsigned char __user
*ubuf
,
490 if (*len
> XATTR_SIZE_MAX
)
492 kbuf
= kmem_zalloc_large(*len
, KM_SLEEP
);
496 error
= xfs_attr_get(XFS_I(inode
), name
, kbuf
, (int *)len
, flags
);
500 if (copy_to_user(ubuf
, kbuf
, *len
))
509 xfs_attrmulti_attr_set(
512 const unsigned char __user
*ubuf
,
519 if (IS_IMMUTABLE(inode
) || IS_APPEND(inode
))
521 if (len
> XATTR_SIZE_MAX
)
524 kbuf
= memdup_user(ubuf
, len
);
526 return PTR_ERR(kbuf
);
528 error
= xfs_attr_set(XFS_I(inode
), name
, kbuf
, len
, flags
);
534 xfs_attrmulti_attr_remove(
539 if (IS_IMMUTABLE(inode
) || IS_APPEND(inode
))
541 return xfs_attr_remove(XFS_I(inode
), name
, flags
);
545 xfs_attrmulti_by_handle(
546 struct file
*parfilp
,
550 xfs_attr_multiop_t
*ops
;
551 xfs_fsop_attrmulti_handlereq_t am_hreq
;
552 struct dentry
*dentry
;
553 unsigned int i
, size
;
554 unsigned char *attr_name
;
556 if (!capable(CAP_SYS_ADMIN
))
557 return -XFS_ERROR(EPERM
);
558 if (copy_from_user(&am_hreq
, arg
, sizeof(xfs_fsop_attrmulti_handlereq_t
)))
559 return -XFS_ERROR(EFAULT
);
562 if (am_hreq
.opcount
>= INT_MAX
/ sizeof(xfs_attr_multiop_t
))
565 dentry
= xfs_handlereq_to_dentry(parfilp
, &am_hreq
.hreq
);
567 return PTR_ERR(dentry
);
570 size
= am_hreq
.opcount
* sizeof(xfs_attr_multiop_t
);
571 if (!size
|| size
> 16 * PAGE_SIZE
)
574 ops
= memdup_user(am_hreq
.ops
, size
);
576 error
= PTR_ERR(ops
);
580 attr_name
= kmalloc(MAXNAMELEN
, GFP_KERNEL
);
585 for (i
= 0; i
< am_hreq
.opcount
; i
++) {
586 ops
[i
].am_error
= strncpy_from_user((char *)attr_name
,
587 ops
[i
].am_attrname
, MAXNAMELEN
);
588 if (ops
[i
].am_error
== 0 || ops
[i
].am_error
== MAXNAMELEN
)
590 if (ops
[i
].am_error
< 0)
593 switch (ops
[i
].am_opcode
) {
595 ops
[i
].am_error
= xfs_attrmulti_attr_get(
596 dentry
->d_inode
, attr_name
,
597 ops
[i
].am_attrvalue
, &ops
[i
].am_length
,
601 ops
[i
].am_error
= mnt_want_write_file(parfilp
);
604 ops
[i
].am_error
= xfs_attrmulti_attr_set(
605 dentry
->d_inode
, attr_name
,
606 ops
[i
].am_attrvalue
, ops
[i
].am_length
,
608 mnt_drop_write_file(parfilp
);
611 ops
[i
].am_error
= mnt_want_write_file(parfilp
);
614 ops
[i
].am_error
= xfs_attrmulti_attr_remove(
615 dentry
->d_inode
, attr_name
,
617 mnt_drop_write_file(parfilp
);
620 ops
[i
].am_error
= EINVAL
;
624 if (copy_to_user(am_hreq
.ops
, ops
, size
))
625 error
= XFS_ERROR(EFAULT
);
637 struct xfs_inode
*ip
,
648 * Only allow the sys admin to reserve space unless
649 * unwritten extents are enabled.
651 if (!xfs_sb_version_hasextflgbit(&ip
->i_mount
->m_sb
) &&
652 !capable(CAP_SYS_ADMIN
))
653 return -XFS_ERROR(EPERM
);
655 if (inode
->i_flags
& (S_IMMUTABLE
|S_APPEND
))
656 return -XFS_ERROR(EPERM
);
658 if (!(filp
->f_mode
& FMODE_WRITE
))
659 return -XFS_ERROR(EBADF
);
661 if (!S_ISREG(inode
->i_mode
))
662 return -XFS_ERROR(EINVAL
);
664 if (filp
->f_flags
& (O_NDELAY
|O_NONBLOCK
))
665 attr_flags
|= XFS_ATTR_NONBLOCK
;
667 if (filp
->f_flags
& O_DSYNC
)
668 attr_flags
|= XFS_ATTR_SYNC
;
670 if (ioflags
& IO_INVIS
)
671 attr_flags
|= XFS_ATTR_DMI
;
673 error
= mnt_want_write_file(filp
);
676 error
= xfs_change_file_space(ip
, cmd
, bf
, filp
->f_pos
, attr_flags
);
677 mnt_drop_write_file(filp
);
687 xfs_fsop_bulkreq_t bulkreq
;
688 int count
; /* # of records returned */
689 xfs_ino_t inlast
; /* last inode number */
693 /* done = 1 if there are more stats to get and if bulkstat */
694 /* should be called again (unused here, but used in dmapi) */
696 if (!capable(CAP_SYS_ADMIN
))
699 if (XFS_FORCED_SHUTDOWN(mp
))
700 return -XFS_ERROR(EIO
);
702 if (copy_from_user(&bulkreq
, arg
, sizeof(xfs_fsop_bulkreq_t
)))
703 return -XFS_ERROR(EFAULT
);
705 if (copy_from_user(&inlast
, bulkreq
.lastip
, sizeof(__s64
)))
706 return -XFS_ERROR(EFAULT
);
708 if ((count
= bulkreq
.icount
) <= 0)
709 return -XFS_ERROR(EINVAL
);
711 if (bulkreq
.ubuffer
== NULL
)
712 return -XFS_ERROR(EINVAL
);
714 if (cmd
== XFS_IOC_FSINUMBERS
)
715 error
= xfs_inumbers(mp
, &inlast
, &count
,
716 bulkreq
.ubuffer
, xfs_inumbers_fmt
);
717 else if (cmd
== XFS_IOC_FSBULKSTAT_SINGLE
)
718 error
= xfs_bulkstat_single(mp
, &inlast
,
719 bulkreq
.ubuffer
, &done
);
720 else /* XFS_IOC_FSBULKSTAT */
721 error
= xfs_bulkstat(mp
, &inlast
, &count
, xfs_bulkstat_one
,
722 sizeof(xfs_bstat_t
), bulkreq
.ubuffer
,
728 if (bulkreq
.ocount
!= NULL
) {
729 if (copy_to_user(bulkreq
.lastip
, &inlast
,
731 return -XFS_ERROR(EFAULT
);
733 if (copy_to_user(bulkreq
.ocount
, &count
, sizeof(count
)))
734 return -XFS_ERROR(EFAULT
);
741 xfs_ioc_fsgeometry_v1(
745 xfs_fsop_geom_t fsgeo
;
748 error
= xfs_fs_geometry(mp
, &fsgeo
, 3);
753 * Caller should have passed an argument of type
754 * xfs_fsop_geom_v1_t. This is a proper subset of the
755 * xfs_fsop_geom_t that xfs_fs_geometry() fills in.
757 if (copy_to_user(arg
, &fsgeo
, sizeof(xfs_fsop_geom_v1_t
)))
758 return -XFS_ERROR(EFAULT
);
767 xfs_fsop_geom_t fsgeo
;
770 error
= xfs_fs_geometry(mp
, &fsgeo
, 4);
774 if (copy_to_user(arg
, &fsgeo
, sizeof(fsgeo
)))
775 return -XFS_ERROR(EFAULT
);
780 * Linux extended inode flags interface.
784 xfs_merge_ioc_xflags(
788 unsigned int xflags
= start
;
790 if (flags
& FS_IMMUTABLE_FL
)
791 xflags
|= XFS_XFLAG_IMMUTABLE
;
793 xflags
&= ~XFS_XFLAG_IMMUTABLE
;
794 if (flags
& FS_APPEND_FL
)
795 xflags
|= XFS_XFLAG_APPEND
;
797 xflags
&= ~XFS_XFLAG_APPEND
;
798 if (flags
& FS_SYNC_FL
)
799 xflags
|= XFS_XFLAG_SYNC
;
801 xflags
&= ~XFS_XFLAG_SYNC
;
802 if (flags
& FS_NOATIME_FL
)
803 xflags
|= XFS_XFLAG_NOATIME
;
805 xflags
&= ~XFS_XFLAG_NOATIME
;
806 if (flags
& FS_NODUMP_FL
)
807 xflags
|= XFS_XFLAG_NODUMP
;
809 xflags
&= ~XFS_XFLAG_NODUMP
;
818 unsigned int flags
= 0;
820 if (di_flags
& XFS_DIFLAG_IMMUTABLE
)
821 flags
|= FS_IMMUTABLE_FL
;
822 if (di_flags
& XFS_DIFLAG_APPEND
)
823 flags
|= FS_APPEND_FL
;
824 if (di_flags
& XFS_DIFLAG_SYNC
)
826 if (di_flags
& XFS_DIFLAG_NOATIME
)
827 flags
|= FS_NOATIME_FL
;
828 if (di_flags
& XFS_DIFLAG_NODUMP
)
829 flags
|= FS_NODUMP_FL
;
841 memset(&fa
, 0, sizeof(struct fsxattr
));
843 xfs_ilock(ip
, XFS_ILOCK_SHARED
);
844 fa
.fsx_xflags
= xfs_ip2xflags(ip
);
845 fa
.fsx_extsize
= ip
->i_d
.di_extsize
<< ip
->i_mount
->m_sb
.sb_blocklog
;
846 fa
.fsx_projid
= xfs_get_projid(ip
);
850 if (ip
->i_afp
->if_flags
& XFS_IFEXTENTS
)
851 fa
.fsx_nextents
= ip
->i_afp
->if_bytes
/
852 sizeof(xfs_bmbt_rec_t
);
854 fa
.fsx_nextents
= ip
->i_d
.di_anextents
;
858 if (ip
->i_df
.if_flags
& XFS_IFEXTENTS
)
859 fa
.fsx_nextents
= ip
->i_df
.if_bytes
/
860 sizeof(xfs_bmbt_rec_t
);
862 fa
.fsx_nextents
= ip
->i_d
.di_nextents
;
864 xfs_iunlock(ip
, XFS_ILOCK_SHARED
);
866 if (copy_to_user(arg
, &fa
, sizeof(fa
)))
873 struct xfs_inode
*ip
,
876 unsigned int di_flags
;
878 /* can't set PREALLOC this way, just preserve it */
879 di_flags
= (ip
->i_d
.di_flags
& XFS_DIFLAG_PREALLOC
);
880 if (xflags
& XFS_XFLAG_IMMUTABLE
)
881 di_flags
|= XFS_DIFLAG_IMMUTABLE
;
882 if (xflags
& XFS_XFLAG_APPEND
)
883 di_flags
|= XFS_DIFLAG_APPEND
;
884 if (xflags
& XFS_XFLAG_SYNC
)
885 di_flags
|= XFS_DIFLAG_SYNC
;
886 if (xflags
& XFS_XFLAG_NOATIME
)
887 di_flags
|= XFS_DIFLAG_NOATIME
;
888 if (xflags
& XFS_XFLAG_NODUMP
)
889 di_flags
|= XFS_DIFLAG_NODUMP
;
890 if (xflags
& XFS_XFLAG_PROJINHERIT
)
891 di_flags
|= XFS_DIFLAG_PROJINHERIT
;
892 if (xflags
& XFS_XFLAG_NODEFRAG
)
893 di_flags
|= XFS_DIFLAG_NODEFRAG
;
894 if (xflags
& XFS_XFLAG_FILESTREAM
)
895 di_flags
|= XFS_DIFLAG_FILESTREAM
;
896 if (S_ISDIR(ip
->i_d
.di_mode
)) {
897 if (xflags
& XFS_XFLAG_RTINHERIT
)
898 di_flags
|= XFS_DIFLAG_RTINHERIT
;
899 if (xflags
& XFS_XFLAG_NOSYMLINKS
)
900 di_flags
|= XFS_DIFLAG_NOSYMLINKS
;
901 if (xflags
& XFS_XFLAG_EXTSZINHERIT
)
902 di_flags
|= XFS_DIFLAG_EXTSZINHERIT
;
903 } else if (S_ISREG(ip
->i_d
.di_mode
)) {
904 if (xflags
& XFS_XFLAG_REALTIME
)
905 di_flags
|= XFS_DIFLAG_REALTIME
;
906 if (xflags
& XFS_XFLAG_EXTSIZE
)
907 di_flags
|= XFS_DIFLAG_EXTSIZE
;
910 ip
->i_d
.di_flags
= di_flags
;
914 xfs_diflags_to_linux(
915 struct xfs_inode
*ip
)
917 struct inode
*inode
= VFS_I(ip
);
918 unsigned int xflags
= xfs_ip2xflags(ip
);
920 if (xflags
& XFS_XFLAG_IMMUTABLE
)
921 inode
->i_flags
|= S_IMMUTABLE
;
923 inode
->i_flags
&= ~S_IMMUTABLE
;
924 if (xflags
& XFS_XFLAG_APPEND
)
925 inode
->i_flags
|= S_APPEND
;
927 inode
->i_flags
&= ~S_APPEND
;
928 if (xflags
& XFS_XFLAG_SYNC
)
929 inode
->i_flags
|= S_SYNC
;
931 inode
->i_flags
&= ~S_SYNC
;
932 if (xflags
& XFS_XFLAG_NOATIME
)
933 inode
->i_flags
|= S_NOATIME
;
935 inode
->i_flags
&= ~S_NOATIME
;
939 #define FSX_EXTSIZE 2
941 #define FSX_NONBLOCK 8
949 struct xfs_mount
*mp
= ip
->i_mount
;
950 struct xfs_trans
*tp
;
951 unsigned int lock_flags
= 0;
952 struct xfs_dquot
*udqp
= NULL
;
953 struct xfs_dquot
*pdqp
= NULL
;
954 struct xfs_dquot
*olddquot
= NULL
;
957 trace_xfs_ioctl_setattr(ip
);
959 if (mp
->m_flags
& XFS_MOUNT_RDONLY
)
960 return XFS_ERROR(EROFS
);
961 if (XFS_FORCED_SHUTDOWN(mp
))
962 return XFS_ERROR(EIO
);
965 * Disallow 32bit project ids when projid32bit feature is not enabled.
967 if ((mask
& FSX_PROJID
) && (fa
->fsx_projid
> (__uint16_t
)-1) &&
968 !xfs_sb_version_hasprojid32bit(&ip
->i_mount
->m_sb
))
969 return XFS_ERROR(EINVAL
);
972 * If disk quotas is on, we make sure that the dquots do exist on disk,
973 * before we start any other transactions. Trying to do this later
974 * is messy. We don't care to take a readlock to look at the ids
975 * in inode here, because we can't hold it across the trans_reserve.
976 * If the IDs do change before we take the ilock, we're covered
977 * because the i_*dquot fields will get updated anyway.
979 if (XFS_IS_QUOTA_ON(mp
) && (mask
& FSX_PROJID
)) {
980 code
= xfs_qm_vop_dqalloc(ip
, ip
->i_d
.di_uid
,
981 ip
->i_d
.di_gid
, fa
->fsx_projid
,
982 XFS_QMOPT_PQUOTA
, &udqp
, NULL
, &pdqp
);
988 * For the other attributes, we acquire the inode lock and
989 * first do an error checking pass.
991 tp
= xfs_trans_alloc(mp
, XFS_TRANS_SETATTR_NOT_SIZE
);
992 code
= xfs_trans_reserve(tp
, &M_RES(mp
)->tr_ichange
, 0, 0);
996 lock_flags
= XFS_ILOCK_EXCL
;
997 xfs_ilock(ip
, lock_flags
);
1000 * CAP_FOWNER overrides the following restrictions:
1002 * The user ID of the calling process must be equal
1003 * to the file owner ID, except in cases where the
1004 * CAP_FSETID capability is applicable.
1006 if (!inode_owner_or_capable(VFS_I(ip
))) {
1007 code
= XFS_ERROR(EPERM
);
1012 * Do a quota reservation only if projid is actually going to change.
1013 * Only allow changing of projid from init_user_ns since it is a
1014 * non user namespace aware identifier.
1016 if (mask
& FSX_PROJID
) {
1017 if (current_user_ns() != &init_user_ns
) {
1018 code
= XFS_ERROR(EINVAL
);
1022 if (XFS_IS_QUOTA_RUNNING(mp
) &&
1023 XFS_IS_PQUOTA_ON(mp
) &&
1024 xfs_get_projid(ip
) != fa
->fsx_projid
) {
1026 code
= xfs_qm_vop_chown_reserve(tp
, ip
, udqp
, NULL
,
1027 pdqp
, capable(CAP_FOWNER
) ?
1028 XFS_QMOPT_FORCE_RES
: 0);
1029 if (code
) /* out of quota */
1034 if (mask
& FSX_EXTSIZE
) {
1036 * Can't change extent size if any extents are allocated.
1038 if (ip
->i_d
.di_nextents
&&
1039 ((ip
->i_d
.di_extsize
<< mp
->m_sb
.sb_blocklog
) !=
1041 code
= XFS_ERROR(EINVAL
); /* EFBIG? */
1046 * Extent size must be a multiple of the appropriate block
1047 * size, if set at all. It must also be smaller than the
1048 * maximum extent size supported by the filesystem.
1050 * Also, for non-realtime files, limit the extent size hint to
1051 * half the size of the AGs in the filesystem so alignment
1052 * doesn't result in extents larger than an AG.
1054 if (fa
->fsx_extsize
!= 0) {
1056 xfs_fsblock_t extsize_fsb
;
1058 extsize_fsb
= XFS_B_TO_FSB(mp
, fa
->fsx_extsize
);
1059 if (extsize_fsb
> MAXEXTLEN
) {
1060 code
= XFS_ERROR(EINVAL
);
1064 if (XFS_IS_REALTIME_INODE(ip
) ||
1065 ((mask
& FSX_XFLAGS
) &&
1066 (fa
->fsx_xflags
& XFS_XFLAG_REALTIME
))) {
1067 size
= mp
->m_sb
.sb_rextsize
<<
1068 mp
->m_sb
.sb_blocklog
;
1070 size
= mp
->m_sb
.sb_blocksize
;
1071 if (extsize_fsb
> mp
->m_sb
.sb_agblocks
/ 2) {
1072 code
= XFS_ERROR(EINVAL
);
1077 if (fa
->fsx_extsize
% size
) {
1078 code
= XFS_ERROR(EINVAL
);
1085 if (mask
& FSX_XFLAGS
) {
1087 * Can't change realtime flag if any extents are allocated.
1089 if ((ip
->i_d
.di_nextents
|| ip
->i_delayed_blks
) &&
1090 (XFS_IS_REALTIME_INODE(ip
)) !=
1091 (fa
->fsx_xflags
& XFS_XFLAG_REALTIME
)) {
1092 code
= XFS_ERROR(EINVAL
); /* EFBIG? */
1097 * If realtime flag is set then must have realtime data.
1099 if ((fa
->fsx_xflags
& XFS_XFLAG_REALTIME
)) {
1100 if ((mp
->m_sb
.sb_rblocks
== 0) ||
1101 (mp
->m_sb
.sb_rextsize
== 0) ||
1102 (ip
->i_d
.di_extsize
% mp
->m_sb
.sb_rextsize
)) {
1103 code
= XFS_ERROR(EINVAL
);
1109 * Can't modify an immutable/append-only file unless
1110 * we have appropriate permission.
1112 if ((ip
->i_d
.di_flags
&
1113 (XFS_DIFLAG_IMMUTABLE
|XFS_DIFLAG_APPEND
) ||
1115 (XFS_XFLAG_IMMUTABLE
| XFS_XFLAG_APPEND
))) &&
1116 !capable(CAP_LINUX_IMMUTABLE
)) {
1117 code
= XFS_ERROR(EPERM
);
1122 xfs_trans_ijoin(tp
, ip
, 0);
1125 * Change file ownership. Must be the owner or privileged.
1127 if (mask
& FSX_PROJID
) {
1129 * CAP_FSETID overrides the following restrictions:
1131 * The set-user-ID and set-group-ID bits of a file will be
1132 * cleared upon successful return from chown()
1134 if ((ip
->i_d
.di_mode
& (S_ISUID
|S_ISGID
)) &&
1135 !inode_capable(VFS_I(ip
), CAP_FSETID
))
1136 ip
->i_d
.di_mode
&= ~(S_ISUID
|S_ISGID
);
1139 * Change the ownerships and register quota modifications
1140 * in the transaction.
1142 if (xfs_get_projid(ip
) != fa
->fsx_projid
) {
1143 if (XFS_IS_QUOTA_RUNNING(mp
) && XFS_IS_PQUOTA_ON(mp
)) {
1144 olddquot
= xfs_qm_vop_chown(tp
, ip
,
1145 &ip
->i_pdquot
, pdqp
);
1147 xfs_set_projid(ip
, fa
->fsx_projid
);
1150 * We may have to rev the inode as well as
1151 * the superblock version number since projids didn't
1152 * exist before DINODE_VERSION_2 and SB_VERSION_NLINK.
1154 if (ip
->i_d
.di_version
== 1)
1155 xfs_bump_ino_vers2(tp
, ip
);
1160 if (mask
& FSX_EXTSIZE
)
1161 ip
->i_d
.di_extsize
= fa
->fsx_extsize
>> mp
->m_sb
.sb_blocklog
;
1162 if (mask
& FSX_XFLAGS
) {
1163 xfs_set_diflags(ip
, fa
->fsx_xflags
);
1164 xfs_diflags_to_linux(ip
);
1167 xfs_trans_ichgtime(tp
, ip
, XFS_ICHGTIME_CHG
);
1168 xfs_trans_log_inode(tp
, ip
, XFS_ILOG_CORE
);
1170 XFS_STATS_INC(xs_ig_attrchg
);
1173 * If this is a synchronous mount, make sure that the
1174 * transaction goes to disk before returning to the user.
1175 * This is slightly sub-optimal in that truncates require
1176 * two sync transactions instead of one for wsync filesystems.
1177 * One for the truncate and one for the timestamps since we
1178 * don't want to change the timestamps unless we're sure the
1179 * truncate worked. Truncates are less than 1% of the laddis
1180 * mix so this probably isn't worth the trouble to optimize.
1182 if (mp
->m_flags
& XFS_MOUNT_WSYNC
)
1183 xfs_trans_set_sync(tp
);
1184 code
= xfs_trans_commit(tp
, 0);
1185 xfs_iunlock(ip
, lock_flags
);
1188 * Release any dquot(s) the inode had kept before chown.
1190 xfs_qm_dqrele(olddquot
);
1191 xfs_qm_dqrele(udqp
);
1192 xfs_qm_dqrele(pdqp
);
1197 xfs_qm_dqrele(udqp
);
1198 xfs_qm_dqrele(pdqp
);
1199 xfs_trans_cancel(tp
, 0);
1201 xfs_iunlock(ip
, lock_flags
);
1215 if (copy_from_user(&fa
, arg
, sizeof(fa
)))
1218 mask
= FSX_XFLAGS
| FSX_EXTSIZE
| FSX_PROJID
;
1219 if (filp
->f_flags
& (O_NDELAY
|O_NONBLOCK
))
1220 mask
|= FSX_NONBLOCK
;
1222 error
= mnt_want_write_file(filp
);
1225 error
= xfs_ioctl_setattr(ip
, &fa
, mask
);
1226 mnt_drop_write_file(filp
);
1237 flags
= xfs_di2lxflags(ip
->i_d
.di_flags
);
1238 if (copy_to_user(arg
, &flags
, sizeof(flags
)))
1254 if (copy_from_user(&flags
, arg
, sizeof(flags
)))
1257 if (flags
& ~(FS_IMMUTABLE_FL
| FS_APPEND_FL
| \
1258 FS_NOATIME_FL
| FS_NODUMP_FL
| \
1263 if (filp
->f_flags
& (O_NDELAY
|O_NONBLOCK
))
1264 mask
|= FSX_NONBLOCK
;
1265 fa
.fsx_xflags
= xfs_merge_ioc_xflags(flags
, xfs_ip2xflags(ip
));
1267 error
= mnt_want_write_file(filp
);
1270 error
= xfs_ioctl_setattr(ip
, &fa
, mask
);
1271 mnt_drop_write_file(filp
);
1276 xfs_getbmap_format(void **ap
, struct getbmapx
*bmv
, int *full
)
1278 struct getbmap __user
*base
= *ap
;
1280 /* copy only getbmap portion (not getbmapx) */
1281 if (copy_to_user(base
, bmv
, sizeof(struct getbmap
)))
1282 return XFS_ERROR(EFAULT
);
1284 *ap
+= sizeof(struct getbmap
);
1290 struct xfs_inode
*ip
,
1295 struct getbmapx bmx
;
1298 if (copy_from_user(&bmx
, arg
, sizeof(struct getbmapx
)))
1299 return -XFS_ERROR(EFAULT
);
1301 if (bmx
.bmv_count
< 2)
1302 return -XFS_ERROR(EINVAL
);
1304 bmx
.bmv_iflags
= (cmd
== XFS_IOC_GETBMAPA
? BMV_IF_ATTRFORK
: 0);
1305 if (ioflags
& IO_INVIS
)
1306 bmx
.bmv_iflags
|= BMV_IF_NO_DMAPI_READ
;
1308 error
= xfs_getbmap(ip
, &bmx
, xfs_getbmap_format
,
1309 (struct getbmap
*)arg
+1);
1313 /* copy back header - only size of getbmap */
1314 if (copy_to_user(arg
, &bmx
, sizeof(struct getbmap
)))
1315 return -XFS_ERROR(EFAULT
);
1320 xfs_getbmapx_format(void **ap
, struct getbmapx
*bmv
, int *full
)
1322 struct getbmapx __user
*base
= *ap
;
1324 if (copy_to_user(base
, bmv
, sizeof(struct getbmapx
)))
1325 return XFS_ERROR(EFAULT
);
1327 *ap
+= sizeof(struct getbmapx
);
1333 struct xfs_inode
*ip
,
1336 struct getbmapx bmx
;
1339 if (copy_from_user(&bmx
, arg
, sizeof(bmx
)))
1340 return -XFS_ERROR(EFAULT
);
1342 if (bmx
.bmv_count
< 2)
1343 return -XFS_ERROR(EINVAL
);
1345 if (bmx
.bmv_iflags
& (~BMV_IF_VALID
))
1346 return -XFS_ERROR(EINVAL
);
1348 error
= xfs_getbmap(ip
, &bmx
, xfs_getbmapx_format
,
1349 (struct getbmapx
*)arg
+1);
1353 /* copy back header */
1354 if (copy_to_user(arg
, &bmx
, sizeof(struct getbmapx
)))
1355 return -XFS_ERROR(EFAULT
);
1364 xfs_inode_t
*ip
, *tip
;
1368 /* Pull information for the target fd */
1369 f
= fdget((int)sxp
->sx_fdtarget
);
1371 error
= XFS_ERROR(EINVAL
);
1375 if (!(f
.file
->f_mode
& FMODE_WRITE
) ||
1376 !(f
.file
->f_mode
& FMODE_READ
) ||
1377 (f
.file
->f_flags
& O_APPEND
)) {
1378 error
= XFS_ERROR(EBADF
);
1382 tmp
= fdget((int)sxp
->sx_fdtmp
);
1384 error
= XFS_ERROR(EINVAL
);
1388 if (!(tmp
.file
->f_mode
& FMODE_WRITE
) ||
1389 !(tmp
.file
->f_mode
& FMODE_READ
) ||
1390 (tmp
.file
->f_flags
& O_APPEND
)) {
1391 error
= XFS_ERROR(EBADF
);
1392 goto out_put_tmp_file
;
1395 if (IS_SWAPFILE(file_inode(f
.file
)) ||
1396 IS_SWAPFILE(file_inode(tmp
.file
))) {
1397 error
= XFS_ERROR(EINVAL
);
1398 goto out_put_tmp_file
;
1401 ip
= XFS_I(file_inode(f
.file
));
1402 tip
= XFS_I(file_inode(tmp
.file
));
1404 if (ip
->i_mount
!= tip
->i_mount
) {
1405 error
= XFS_ERROR(EINVAL
);
1406 goto out_put_tmp_file
;
1409 if (ip
->i_ino
== tip
->i_ino
) {
1410 error
= XFS_ERROR(EINVAL
);
1411 goto out_put_tmp_file
;
1414 if (XFS_FORCED_SHUTDOWN(ip
->i_mount
)) {
1415 error
= XFS_ERROR(EIO
);
1416 goto out_put_tmp_file
;
1419 error
= xfs_swap_extents(ip
, tip
, sxp
);
1430 * Note: some of the ioctl's return positive numbers as a
1431 * byte count indicating success, such as readlink_by_handle.
1432 * So we don't "sign flip" like most other routines. This means
1433 * true errors need to be returned as a negative value.
1441 struct inode
*inode
= file_inode(filp
);
1442 struct xfs_inode
*ip
= XFS_I(inode
);
1443 struct xfs_mount
*mp
= ip
->i_mount
;
1444 void __user
*arg
= (void __user
*)p
;
1448 if (filp
->f_mode
& FMODE_NOCMTIME
)
1449 ioflags
|= IO_INVIS
;
1451 trace_xfs_file_ioctl(ip
);
1455 return xfs_ioc_trim(mp
, arg
);
1456 case XFS_IOC_ALLOCSP
:
1457 case XFS_IOC_FREESP
:
1458 case XFS_IOC_RESVSP
:
1459 case XFS_IOC_UNRESVSP
:
1460 case XFS_IOC_ALLOCSP64
:
1461 case XFS_IOC_FREESP64
:
1462 case XFS_IOC_RESVSP64
:
1463 case XFS_IOC_UNRESVSP64
:
1464 case XFS_IOC_ZERO_RANGE
: {
1467 if (copy_from_user(&bf
, arg
, sizeof(bf
)))
1468 return -XFS_ERROR(EFAULT
);
1469 return xfs_ioc_space(ip
, inode
, filp
, ioflags
, cmd
, &bf
);
1471 case XFS_IOC_DIOINFO
: {
1473 xfs_buftarg_t
*target
=
1474 XFS_IS_REALTIME_INODE(ip
) ?
1475 mp
->m_rtdev_targp
: mp
->m_ddev_targp
;
1477 da
.d_mem
= da
.d_miniosz
= 1 << target
->bt_sshift
;
1478 da
.d_maxiosz
= INT_MAX
& ~(da
.d_miniosz
- 1);
1480 if (copy_to_user(arg
, &da
, sizeof(da
)))
1481 return -XFS_ERROR(EFAULT
);
1485 case XFS_IOC_FSBULKSTAT_SINGLE
:
1486 case XFS_IOC_FSBULKSTAT
:
1487 case XFS_IOC_FSINUMBERS
:
1488 return xfs_ioc_bulkstat(mp
, cmd
, arg
);
1490 case XFS_IOC_FSGEOMETRY_V1
:
1491 return xfs_ioc_fsgeometry_v1(mp
, arg
);
1493 case XFS_IOC_FSGEOMETRY
:
1494 return xfs_ioc_fsgeometry(mp
, arg
);
1496 case XFS_IOC_GETVERSION
:
1497 return put_user(inode
->i_generation
, (int __user
*)arg
);
1499 case XFS_IOC_FSGETXATTR
:
1500 return xfs_ioc_fsgetxattr(ip
, 0, arg
);
1501 case XFS_IOC_FSGETXATTRA
:
1502 return xfs_ioc_fsgetxattr(ip
, 1, arg
);
1503 case XFS_IOC_FSSETXATTR
:
1504 return xfs_ioc_fssetxattr(ip
, filp
, arg
);
1505 case XFS_IOC_GETXFLAGS
:
1506 return xfs_ioc_getxflags(ip
, arg
);
1507 case XFS_IOC_SETXFLAGS
:
1508 return xfs_ioc_setxflags(ip
, filp
, arg
);
1510 case XFS_IOC_FSSETDM
: {
1511 struct fsdmidata dmi
;
1513 if (copy_from_user(&dmi
, arg
, sizeof(dmi
)))
1514 return -XFS_ERROR(EFAULT
);
1516 error
= mnt_want_write_file(filp
);
1520 error
= xfs_set_dmattrs(ip
, dmi
.fsd_dmevmask
,
1522 mnt_drop_write_file(filp
);
1526 case XFS_IOC_GETBMAP
:
1527 case XFS_IOC_GETBMAPA
:
1528 return xfs_ioc_getbmap(ip
, ioflags
, cmd
, arg
);
1530 case XFS_IOC_GETBMAPX
:
1531 return xfs_ioc_getbmapx(ip
, arg
);
1533 case XFS_IOC_FD_TO_HANDLE
:
1534 case XFS_IOC_PATH_TO_HANDLE
:
1535 case XFS_IOC_PATH_TO_FSHANDLE
: {
1536 xfs_fsop_handlereq_t hreq
;
1538 if (copy_from_user(&hreq
, arg
, sizeof(hreq
)))
1539 return -XFS_ERROR(EFAULT
);
1540 return xfs_find_handle(cmd
, &hreq
);
1542 case XFS_IOC_OPEN_BY_HANDLE
: {
1543 xfs_fsop_handlereq_t hreq
;
1545 if (copy_from_user(&hreq
, arg
, sizeof(xfs_fsop_handlereq_t
)))
1546 return -XFS_ERROR(EFAULT
);
1547 return xfs_open_by_handle(filp
, &hreq
);
1549 case XFS_IOC_FSSETDM_BY_HANDLE
:
1550 return xfs_fssetdm_by_handle(filp
, arg
);
1552 case XFS_IOC_READLINK_BY_HANDLE
: {
1553 xfs_fsop_handlereq_t hreq
;
1555 if (copy_from_user(&hreq
, arg
, sizeof(xfs_fsop_handlereq_t
)))
1556 return -XFS_ERROR(EFAULT
);
1557 return xfs_readlink_by_handle(filp
, &hreq
);
1559 case XFS_IOC_ATTRLIST_BY_HANDLE
:
1560 return xfs_attrlist_by_handle(filp
, arg
);
1562 case XFS_IOC_ATTRMULTI_BY_HANDLE
:
1563 return xfs_attrmulti_by_handle(filp
, arg
);
1565 case XFS_IOC_SWAPEXT
: {
1566 struct xfs_swapext sxp
;
1568 if (copy_from_user(&sxp
, arg
, sizeof(xfs_swapext_t
)))
1569 return -XFS_ERROR(EFAULT
);
1570 error
= mnt_want_write_file(filp
);
1573 error
= xfs_ioc_swapext(&sxp
);
1574 mnt_drop_write_file(filp
);
1578 case XFS_IOC_FSCOUNTS
: {
1579 xfs_fsop_counts_t out
;
1581 error
= xfs_fs_counts(mp
, &out
);
1585 if (copy_to_user(arg
, &out
, sizeof(out
)))
1586 return -XFS_ERROR(EFAULT
);
1590 case XFS_IOC_SET_RESBLKS
: {
1591 xfs_fsop_resblks_t inout
;
1594 if (!capable(CAP_SYS_ADMIN
))
1597 if (mp
->m_flags
& XFS_MOUNT_RDONLY
)
1598 return -XFS_ERROR(EROFS
);
1600 if (copy_from_user(&inout
, arg
, sizeof(inout
)))
1601 return -XFS_ERROR(EFAULT
);
1603 error
= mnt_want_write_file(filp
);
1607 /* input parameter is passed in resblks field of structure */
1609 error
= xfs_reserve_blocks(mp
, &in
, &inout
);
1610 mnt_drop_write_file(filp
);
1614 if (copy_to_user(arg
, &inout
, sizeof(inout
)))
1615 return -XFS_ERROR(EFAULT
);
1619 case XFS_IOC_GET_RESBLKS
: {
1620 xfs_fsop_resblks_t out
;
1622 if (!capable(CAP_SYS_ADMIN
))
1625 error
= xfs_reserve_blocks(mp
, NULL
, &out
);
1629 if (copy_to_user(arg
, &out
, sizeof(out
)))
1630 return -XFS_ERROR(EFAULT
);
1635 case XFS_IOC_FSGROWFSDATA
: {
1636 xfs_growfs_data_t in
;
1638 if (copy_from_user(&in
, arg
, sizeof(in
)))
1639 return -XFS_ERROR(EFAULT
);
1641 error
= mnt_want_write_file(filp
);
1644 error
= xfs_growfs_data(mp
, &in
);
1645 mnt_drop_write_file(filp
);
1649 case XFS_IOC_FSGROWFSLOG
: {
1650 xfs_growfs_log_t in
;
1652 if (copy_from_user(&in
, arg
, sizeof(in
)))
1653 return -XFS_ERROR(EFAULT
);
1655 error
= mnt_want_write_file(filp
);
1658 error
= xfs_growfs_log(mp
, &in
);
1659 mnt_drop_write_file(filp
);
1663 case XFS_IOC_FSGROWFSRT
: {
1666 if (copy_from_user(&in
, arg
, sizeof(in
)))
1667 return -XFS_ERROR(EFAULT
);
1669 error
= mnt_want_write_file(filp
);
1672 error
= xfs_growfs_rt(mp
, &in
);
1673 mnt_drop_write_file(filp
);
1677 case XFS_IOC_GOINGDOWN
: {
1680 if (!capable(CAP_SYS_ADMIN
))
1683 if (get_user(in
, (__uint32_t __user
*)arg
))
1684 return -XFS_ERROR(EFAULT
);
1686 error
= xfs_fs_goingdown(mp
, in
);
1690 case XFS_IOC_ERROR_INJECTION
: {
1691 xfs_error_injection_t in
;
1693 if (!capable(CAP_SYS_ADMIN
))
1696 if (copy_from_user(&in
, arg
, sizeof(in
)))
1697 return -XFS_ERROR(EFAULT
);
1699 error
= xfs_errortag_add(in
.errtag
, mp
);
1703 case XFS_IOC_ERROR_CLEARALL
:
1704 if (!capable(CAP_SYS_ADMIN
))
1707 error
= xfs_errortag_clearall(mp
, 1);
1710 case XFS_IOC_FREE_EOFBLOCKS
: {
1711 struct xfs_fs_eofblocks eofb
;
1712 struct xfs_eofblocks keofb
;
1714 if (!capable(CAP_SYS_ADMIN
))
1717 if (mp
->m_flags
& XFS_MOUNT_RDONLY
)
1718 return -XFS_ERROR(EROFS
);
1720 if (copy_from_user(&eofb
, arg
, sizeof(eofb
)))
1721 return -XFS_ERROR(EFAULT
);
1723 error
= xfs_fs_eofblocks_from_user(&eofb
, &keofb
);
1727 return -xfs_icache_free_eofblocks(mp
, &keofb
);