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_shared.h"
21 #include "xfs_format.h"
22 #include "xfs_log_format.h"
23 #include "xfs_trans_resv.h"
24 #include "xfs_mount.h"
25 #include "xfs_inode.h"
26 #include "xfs_ioctl.h"
27 #include "xfs_alloc.h"
28 #include "xfs_rtalloc.h"
29 #include "xfs_itable.h"
30 #include "xfs_error.h"
33 #include "xfs_bmap_util.h"
34 #include "xfs_fsops.h"
35 #include "xfs_discard.h"
36 #include "xfs_quota.h"
37 #include "xfs_export.h"
38 #include "xfs_trace.h"
39 #include "xfs_icache.h"
40 #include "xfs_symlink.h"
41 #include "xfs_trans.h"
43 #include <linux/capability.h>
44 #include <linux/dcache.h>
45 #include <linux/mount.h>
46 #include <linux/namei.h>
47 #include <linux/pagemap.h>
48 #include <linux/slab.h>
49 #include <linux/exportfs.h>
52 * xfs_find_handle maps from userspace xfs_fsop_handlereq structure to
53 * a file or fs handle.
55 * XFS_IOC_PATH_TO_FSHANDLE
56 * returns fs handle for a mount point or path within that mount point
57 * XFS_IOC_FD_TO_HANDLE
58 * returns full handle for a FD opened in user space
59 * XFS_IOC_PATH_TO_HANDLE
60 * returns full handle for a path
65 xfs_fsop_handlereq_t
*hreq
)
75 if (cmd
== XFS_IOC_FD_TO_HANDLE
) {
79 inode
= file_inode(f
.file
);
81 error
= user_lpath((const char __user
*)hreq
->path
, &path
);
84 inode
= path
.dentry
->d_inode
;
89 * We can only generate handles for inodes residing on a XFS filesystem,
90 * and only for regular files, directories or symbolic links.
93 if (inode
->i_sb
->s_magic
!= XFS_SB_MAGIC
)
97 if (!S_ISREG(inode
->i_mode
) &&
98 !S_ISDIR(inode
->i_mode
) &&
99 !S_ISLNK(inode
->i_mode
))
103 memcpy(&handle
.ha_fsid
, ip
->i_mount
->m_fixedfsid
, sizeof(xfs_fsid_t
));
105 if (cmd
== XFS_IOC_PATH_TO_FSHANDLE
) {
107 * This handle only contains an fsid, zero the rest.
109 memset(&handle
.ha_fid
, 0, sizeof(handle
.ha_fid
));
110 hsize
= sizeof(xfs_fsid_t
);
112 handle
.ha_fid
.fid_len
= sizeof(xfs_fid_t
) -
113 sizeof(handle
.ha_fid
.fid_len
);
114 handle
.ha_fid
.fid_pad
= 0;
115 handle
.ha_fid
.fid_gen
= ip
->i_d
.di_gen
;
116 handle
.ha_fid
.fid_ino
= ip
->i_ino
;
118 hsize
= XFS_HSIZE(handle
);
122 if (copy_to_user(hreq
->ohandle
, &handle
, hsize
) ||
123 copy_to_user(hreq
->ohandlen
, &hsize
, sizeof(__s32
)))
129 if (cmd
== XFS_IOC_FD_TO_HANDLE
)
137 * No need to do permission checks on the various pathname components
138 * as the handle operations are privileged.
141 xfs_handle_acceptable(
143 struct dentry
*dentry
)
149 * Convert userspace handle data into a dentry.
152 xfs_handle_to_dentry(
153 struct file
*parfilp
,
154 void __user
*uhandle
,
158 struct xfs_fid64 fid
;
161 * Only allow handle opens under a directory.
163 if (!S_ISDIR(file_inode(parfilp
)->i_mode
))
164 return ERR_PTR(-ENOTDIR
);
166 if (hlen
!= sizeof(xfs_handle_t
))
167 return ERR_PTR(-EINVAL
);
168 if (copy_from_user(&handle
, uhandle
, hlen
))
169 return ERR_PTR(-EFAULT
);
170 if (handle
.ha_fid
.fid_len
!=
171 sizeof(handle
.ha_fid
) - sizeof(handle
.ha_fid
.fid_len
))
172 return ERR_PTR(-EINVAL
);
174 memset(&fid
, 0, sizeof(struct fid
));
175 fid
.ino
= handle
.ha_fid
.fid_ino
;
176 fid
.gen
= handle
.ha_fid
.fid_gen
;
178 return exportfs_decode_fh(parfilp
->f_path
.mnt
, (struct fid
*)&fid
, 3,
179 FILEID_INO32_GEN
| XFS_FILEID_TYPE_64FLAG
,
180 xfs_handle_acceptable
, NULL
);
183 STATIC
struct dentry
*
184 xfs_handlereq_to_dentry(
185 struct file
*parfilp
,
186 xfs_fsop_handlereq_t
*hreq
)
188 return xfs_handle_to_dentry(parfilp
, hreq
->ihandle
, hreq
->ihandlen
);
193 struct file
*parfilp
,
194 xfs_fsop_handlereq_t
*hreq
)
196 const struct cred
*cred
= current_cred();
202 struct dentry
*dentry
;
206 if (!capable(CAP_SYS_ADMIN
))
209 dentry
= xfs_handlereq_to_dentry(parfilp
, hreq
);
211 return PTR_ERR(dentry
);
212 inode
= dentry
->d_inode
;
214 /* Restrict xfs_open_by_handle to directories & regular files. */
215 if (!(S_ISREG(inode
->i_mode
) || S_ISDIR(inode
->i_mode
))) {
220 #if BITS_PER_LONG != 32
221 hreq
->oflags
|= O_LARGEFILE
;
224 permflag
= hreq
->oflags
;
225 fmode
= OPEN_FMODE(permflag
);
226 if ((!(permflag
& O_APPEND
) || (permflag
& O_TRUNC
)) &&
227 (fmode
& FMODE_WRITE
) && IS_APPEND(inode
)) {
232 if ((fmode
& FMODE_WRITE
) && IS_IMMUTABLE(inode
)) {
237 /* Can't write directories. */
238 if (S_ISDIR(inode
->i_mode
) && (fmode
& FMODE_WRITE
)) {
243 fd
= get_unused_fd_flags(0);
249 path
.mnt
= parfilp
->f_path
.mnt
;
250 path
.dentry
= dentry
;
251 filp
= dentry_open(&path
, hreq
->oflags
, cred
);
255 return PTR_ERR(filp
);
258 if (S_ISREG(inode
->i_mode
)) {
259 filp
->f_flags
|= O_NOATIME
;
260 filp
->f_mode
|= FMODE_NOCMTIME
;
263 fd_install(fd
, filp
);
272 xfs_readlink_by_handle(
273 struct file
*parfilp
,
274 xfs_fsop_handlereq_t
*hreq
)
276 struct dentry
*dentry
;
281 if (!capable(CAP_SYS_ADMIN
))
284 dentry
= xfs_handlereq_to_dentry(parfilp
, hreq
);
286 return PTR_ERR(dentry
);
288 /* Restrict this handle operation to symlinks only. */
289 if (!S_ISLNK(dentry
->d_inode
->i_mode
)) {
294 if (copy_from_user(&olen
, hreq
->ohandlen
, sizeof(__u32
))) {
299 link
= kmalloc(MAXPATHLEN
+1, GFP_KERNEL
);
305 error
= xfs_readlink(XFS_I(dentry
->d_inode
), link
);
308 error
= readlink_copy(hreq
->ohandle
, olen
, link
);
325 xfs_mount_t
*mp
= ip
->i_mount
;
329 if (!capable(CAP_SYS_ADMIN
))
332 if (XFS_FORCED_SHUTDOWN(mp
))
335 tp
= xfs_trans_alloc(mp
, XFS_TRANS_SET_DMATTRS
);
336 error
= xfs_trans_reserve(tp
, &M_RES(mp
)->tr_ichange
, 0, 0);
338 xfs_trans_cancel(tp
, 0);
341 xfs_ilock(ip
, XFS_ILOCK_EXCL
);
342 xfs_trans_ijoin(tp
, ip
, XFS_ILOCK_EXCL
);
344 ip
->i_d
.di_dmevmask
= evmask
;
345 ip
->i_d
.di_dmstate
= state
;
347 xfs_trans_log_inode(tp
, ip
, XFS_ILOG_CORE
);
348 error
= xfs_trans_commit(tp
, 0);
354 xfs_fssetdm_by_handle(
355 struct file
*parfilp
,
359 struct fsdmidata fsd
;
360 xfs_fsop_setdm_handlereq_t dmhreq
;
361 struct dentry
*dentry
;
363 if (!capable(CAP_MKNOD
))
365 if (copy_from_user(&dmhreq
, arg
, sizeof(xfs_fsop_setdm_handlereq_t
)))
368 error
= mnt_want_write_file(parfilp
);
372 dentry
= xfs_handlereq_to_dentry(parfilp
, &dmhreq
.hreq
);
373 if (IS_ERR(dentry
)) {
374 mnt_drop_write_file(parfilp
);
375 return PTR_ERR(dentry
);
378 if (IS_IMMUTABLE(dentry
->d_inode
) || IS_APPEND(dentry
->d_inode
)) {
383 if (copy_from_user(&fsd
, dmhreq
.data
, sizeof(fsd
))) {
388 error
= xfs_set_dmattrs(XFS_I(dentry
->d_inode
), fsd
.fsd_dmevmask
,
392 mnt_drop_write_file(parfilp
);
398 xfs_attrlist_by_handle(
399 struct file
*parfilp
,
403 attrlist_cursor_kern_t
*cursor
;
404 xfs_fsop_attrlist_handlereq_t al_hreq
;
405 struct dentry
*dentry
;
408 if (!capable(CAP_SYS_ADMIN
))
410 if (copy_from_user(&al_hreq
, arg
, sizeof(xfs_fsop_attrlist_handlereq_t
)))
412 if (al_hreq
.buflen
< sizeof(struct attrlist
) ||
413 al_hreq
.buflen
> XATTR_LIST_MAX
)
417 * Reject flags, only allow namespaces.
419 if (al_hreq
.flags
& ~(ATTR_ROOT
| ATTR_SECURE
))
422 dentry
= xfs_handlereq_to_dentry(parfilp
, &al_hreq
.hreq
);
424 return PTR_ERR(dentry
);
426 kbuf
= kmem_zalloc_large(al_hreq
.buflen
, KM_SLEEP
);
430 cursor
= (attrlist_cursor_kern_t
*)&al_hreq
.pos
;
431 error
= xfs_attr_list(XFS_I(dentry
->d_inode
), kbuf
, al_hreq
.buflen
,
432 al_hreq
.flags
, cursor
);
436 if (copy_to_user(al_hreq
.buffer
, kbuf
, al_hreq
.buflen
))
447 xfs_attrmulti_attr_get(
450 unsigned char __user
*ubuf
,
457 if (*len
> XATTR_SIZE_MAX
)
459 kbuf
= kmem_zalloc_large(*len
, KM_SLEEP
);
463 error
= xfs_attr_get(XFS_I(inode
), name
, kbuf
, (int *)len
, flags
);
467 if (copy_to_user(ubuf
, kbuf
, *len
))
476 xfs_attrmulti_attr_set(
479 const unsigned char __user
*ubuf
,
485 if (IS_IMMUTABLE(inode
) || IS_APPEND(inode
))
487 if (len
> XATTR_SIZE_MAX
)
490 kbuf
= memdup_user(ubuf
, len
);
492 return PTR_ERR(kbuf
);
494 return xfs_attr_set(XFS_I(inode
), name
, kbuf
, len
, flags
);
498 xfs_attrmulti_attr_remove(
503 if (IS_IMMUTABLE(inode
) || IS_APPEND(inode
))
505 return xfs_attr_remove(XFS_I(inode
), name
, flags
);
509 xfs_attrmulti_by_handle(
510 struct file
*parfilp
,
514 xfs_attr_multiop_t
*ops
;
515 xfs_fsop_attrmulti_handlereq_t am_hreq
;
516 struct dentry
*dentry
;
517 unsigned int i
, size
;
518 unsigned char *attr_name
;
520 if (!capable(CAP_SYS_ADMIN
))
522 if (copy_from_user(&am_hreq
, arg
, sizeof(xfs_fsop_attrmulti_handlereq_t
)))
526 if (am_hreq
.opcount
>= INT_MAX
/ sizeof(xfs_attr_multiop_t
))
529 dentry
= xfs_handlereq_to_dentry(parfilp
, &am_hreq
.hreq
);
531 return PTR_ERR(dentry
);
534 size
= am_hreq
.opcount
* sizeof(xfs_attr_multiop_t
);
535 if (!size
|| size
> 16 * PAGE_SIZE
)
538 ops
= memdup_user(am_hreq
.ops
, size
);
540 error
= PTR_ERR(ops
);
545 attr_name
= kmalloc(MAXNAMELEN
, GFP_KERNEL
);
550 for (i
= 0; i
< am_hreq
.opcount
; i
++) {
551 ops
[i
].am_error
= strncpy_from_user((char *)attr_name
,
552 ops
[i
].am_attrname
, MAXNAMELEN
);
553 if (ops
[i
].am_error
== 0 || ops
[i
].am_error
== MAXNAMELEN
)
555 if (ops
[i
].am_error
< 0)
558 switch (ops
[i
].am_opcode
) {
560 ops
[i
].am_error
= xfs_attrmulti_attr_get(
561 dentry
->d_inode
, attr_name
,
562 ops
[i
].am_attrvalue
, &ops
[i
].am_length
,
566 ops
[i
].am_error
= mnt_want_write_file(parfilp
);
569 ops
[i
].am_error
= xfs_attrmulti_attr_set(
570 dentry
->d_inode
, attr_name
,
571 ops
[i
].am_attrvalue
, ops
[i
].am_length
,
573 mnt_drop_write_file(parfilp
);
576 ops
[i
].am_error
= mnt_want_write_file(parfilp
);
579 ops
[i
].am_error
= xfs_attrmulti_attr_remove(
580 dentry
->d_inode
, attr_name
,
582 mnt_drop_write_file(parfilp
);
585 ops
[i
].am_error
= -EINVAL
;
589 if (copy_to_user(am_hreq
.ops
, ops
, size
))
602 struct xfs_inode
*ip
,
610 enum xfs_prealloc_flags flags
= 0;
614 * Only allow the sys admin to reserve space unless
615 * unwritten extents are enabled.
617 if (!xfs_sb_version_hasextflgbit(&ip
->i_mount
->m_sb
) &&
618 !capable(CAP_SYS_ADMIN
))
621 if (inode
->i_flags
& (S_IMMUTABLE
|S_APPEND
))
624 if (!(filp
->f_mode
& FMODE_WRITE
))
627 if (!S_ISREG(inode
->i_mode
))
630 if (filp
->f_flags
& O_DSYNC
)
631 flags
|= XFS_PREALLOC_SYNC
;
632 if (ioflags
& XFS_IO_INVIS
)
633 flags
|= XFS_PREALLOC_INVISIBLE
;
635 error
= mnt_want_write_file(filp
);
639 xfs_ilock(ip
, XFS_IOLOCK_EXCL
);
641 switch (bf
->l_whence
) {
645 bf
->l_start
+= filp
->f_pos
;
648 bf
->l_start
+= XFS_ISIZE(ip
);
656 * length of <= 0 for resv/unresv/zero is invalid. length for
657 * alloc/free is ignored completely and we have no idea what userspace
658 * might have set it to, so set it to zero to allow range
662 case XFS_IOC_ZERO_RANGE
:
664 case XFS_IOC_RESVSP64
:
665 case XFS_IOC_UNRESVSP
:
666 case XFS_IOC_UNRESVSP64
:
667 if (bf
->l_len
<= 0) {
677 if (bf
->l_start
< 0 ||
678 bf
->l_start
> inode
->i_sb
->s_maxbytes
||
679 bf
->l_start
+ bf
->l_len
< 0 ||
680 bf
->l_start
+ bf
->l_len
>= inode
->i_sb
->s_maxbytes
) {
686 case XFS_IOC_ZERO_RANGE
:
687 flags
|= XFS_PREALLOC_SET
;
688 error
= xfs_zero_file_space(ip
, bf
->l_start
, bf
->l_len
);
691 case XFS_IOC_RESVSP64
:
692 flags
|= XFS_PREALLOC_SET
;
693 error
= xfs_alloc_file_space(ip
, bf
->l_start
, bf
->l_len
,
696 case XFS_IOC_UNRESVSP
:
697 case XFS_IOC_UNRESVSP64
:
698 error
= xfs_free_file_space(ip
, bf
->l_start
, bf
->l_len
);
700 case XFS_IOC_ALLOCSP
:
701 case XFS_IOC_ALLOCSP64
:
703 case XFS_IOC_FREESP64
:
704 flags
|= XFS_PREALLOC_CLEAR
;
705 if (bf
->l_start
> XFS_ISIZE(ip
)) {
706 error
= xfs_alloc_file_space(ip
, XFS_ISIZE(ip
),
707 bf
->l_start
- XFS_ISIZE(ip
), 0);
712 iattr
.ia_valid
= ATTR_SIZE
;
713 iattr
.ia_size
= bf
->l_start
;
715 error
= xfs_setattr_size(ip
, &iattr
);
725 error
= xfs_update_prealloc_flags(ip
, flags
);
728 xfs_iunlock(ip
, XFS_IOLOCK_EXCL
);
729 mnt_drop_write_file(filp
);
739 xfs_fsop_bulkreq_t bulkreq
;
740 int count
; /* # of records returned */
741 xfs_ino_t inlast
; /* last inode number */
745 /* done = 1 if there are more stats to get and if bulkstat */
746 /* should be called again (unused here, but used in dmapi) */
748 if (!capable(CAP_SYS_ADMIN
))
751 if (XFS_FORCED_SHUTDOWN(mp
))
754 if (copy_from_user(&bulkreq
, arg
, sizeof(xfs_fsop_bulkreq_t
)))
757 if (copy_from_user(&inlast
, bulkreq
.lastip
, sizeof(__s64
)))
760 if ((count
= bulkreq
.icount
) <= 0)
763 if (bulkreq
.ubuffer
== NULL
)
766 if (cmd
== XFS_IOC_FSINUMBERS
)
767 error
= xfs_inumbers(mp
, &inlast
, &count
,
768 bulkreq
.ubuffer
, xfs_inumbers_fmt
);
769 else if (cmd
== XFS_IOC_FSBULKSTAT_SINGLE
)
770 error
= xfs_bulkstat_one(mp
, inlast
, bulkreq
.ubuffer
,
771 sizeof(xfs_bstat_t
), NULL
, &done
);
772 else /* XFS_IOC_FSBULKSTAT */
773 error
= xfs_bulkstat(mp
, &inlast
, &count
, xfs_bulkstat_one
,
774 sizeof(xfs_bstat_t
), bulkreq
.ubuffer
,
780 if (bulkreq
.ocount
!= NULL
) {
781 if (copy_to_user(bulkreq
.lastip
, &inlast
,
785 if (copy_to_user(bulkreq
.ocount
, &count
, sizeof(count
)))
793 xfs_ioc_fsgeometry_v1(
797 xfs_fsop_geom_t fsgeo
;
800 error
= xfs_fs_geometry(mp
, &fsgeo
, 3);
805 * Caller should have passed an argument of type
806 * xfs_fsop_geom_v1_t. This is a proper subset of the
807 * xfs_fsop_geom_t that xfs_fs_geometry() fills in.
809 if (copy_to_user(arg
, &fsgeo
, sizeof(xfs_fsop_geom_v1_t
)))
819 xfs_fsop_geom_t fsgeo
;
822 error
= xfs_fs_geometry(mp
, &fsgeo
, 4);
826 if (copy_to_user(arg
, &fsgeo
, sizeof(fsgeo
)))
832 * Linux extended inode flags interface.
836 xfs_merge_ioc_xflags(
840 unsigned int xflags
= start
;
842 if (flags
& FS_IMMUTABLE_FL
)
843 xflags
|= XFS_XFLAG_IMMUTABLE
;
845 xflags
&= ~XFS_XFLAG_IMMUTABLE
;
846 if (flags
& FS_APPEND_FL
)
847 xflags
|= XFS_XFLAG_APPEND
;
849 xflags
&= ~XFS_XFLAG_APPEND
;
850 if (flags
& FS_SYNC_FL
)
851 xflags
|= XFS_XFLAG_SYNC
;
853 xflags
&= ~XFS_XFLAG_SYNC
;
854 if (flags
& FS_NOATIME_FL
)
855 xflags
|= XFS_XFLAG_NOATIME
;
857 xflags
&= ~XFS_XFLAG_NOATIME
;
858 if (flags
& FS_NODUMP_FL
)
859 xflags
|= XFS_XFLAG_NODUMP
;
861 xflags
&= ~XFS_XFLAG_NODUMP
;
870 unsigned int flags
= 0;
872 if (di_flags
& XFS_DIFLAG_IMMUTABLE
)
873 flags
|= FS_IMMUTABLE_FL
;
874 if (di_flags
& XFS_DIFLAG_APPEND
)
875 flags
|= FS_APPEND_FL
;
876 if (di_flags
& XFS_DIFLAG_SYNC
)
878 if (di_flags
& XFS_DIFLAG_NOATIME
)
879 flags
|= FS_NOATIME_FL
;
880 if (di_flags
& XFS_DIFLAG_NODUMP
)
881 flags
|= FS_NODUMP_FL
;
893 memset(&fa
, 0, sizeof(struct fsxattr
));
895 xfs_ilock(ip
, XFS_ILOCK_SHARED
);
896 fa
.fsx_xflags
= xfs_ip2xflags(ip
);
897 fa
.fsx_extsize
= ip
->i_d
.di_extsize
<< ip
->i_mount
->m_sb
.sb_blocklog
;
898 fa
.fsx_projid
= xfs_get_projid(ip
);
902 if (ip
->i_afp
->if_flags
& XFS_IFEXTENTS
)
903 fa
.fsx_nextents
= ip
->i_afp
->if_bytes
/
904 sizeof(xfs_bmbt_rec_t
);
906 fa
.fsx_nextents
= ip
->i_d
.di_anextents
;
910 if (ip
->i_df
.if_flags
& XFS_IFEXTENTS
)
911 fa
.fsx_nextents
= ip
->i_df
.if_bytes
/
912 sizeof(xfs_bmbt_rec_t
);
914 fa
.fsx_nextents
= ip
->i_d
.di_nextents
;
916 xfs_iunlock(ip
, XFS_ILOCK_SHARED
);
918 if (copy_to_user(arg
, &fa
, sizeof(fa
)))
925 struct xfs_inode
*ip
,
928 unsigned int di_flags
;
930 /* can't set PREALLOC this way, just preserve it */
931 di_flags
= (ip
->i_d
.di_flags
& XFS_DIFLAG_PREALLOC
);
932 if (xflags
& XFS_XFLAG_IMMUTABLE
)
933 di_flags
|= XFS_DIFLAG_IMMUTABLE
;
934 if (xflags
& XFS_XFLAG_APPEND
)
935 di_flags
|= XFS_DIFLAG_APPEND
;
936 if (xflags
& XFS_XFLAG_SYNC
)
937 di_flags
|= XFS_DIFLAG_SYNC
;
938 if (xflags
& XFS_XFLAG_NOATIME
)
939 di_flags
|= XFS_DIFLAG_NOATIME
;
940 if (xflags
& XFS_XFLAG_NODUMP
)
941 di_flags
|= XFS_DIFLAG_NODUMP
;
942 if (xflags
& XFS_XFLAG_NODEFRAG
)
943 di_flags
|= XFS_DIFLAG_NODEFRAG
;
944 if (xflags
& XFS_XFLAG_FILESTREAM
)
945 di_flags
|= XFS_DIFLAG_FILESTREAM
;
946 if (S_ISDIR(ip
->i_d
.di_mode
)) {
947 if (xflags
& XFS_XFLAG_RTINHERIT
)
948 di_flags
|= XFS_DIFLAG_RTINHERIT
;
949 if (xflags
& XFS_XFLAG_NOSYMLINKS
)
950 di_flags
|= XFS_DIFLAG_NOSYMLINKS
;
951 if (xflags
& XFS_XFLAG_EXTSZINHERIT
)
952 di_flags
|= XFS_DIFLAG_EXTSZINHERIT
;
953 if (xflags
& XFS_XFLAG_PROJINHERIT
)
954 di_flags
|= XFS_DIFLAG_PROJINHERIT
;
955 } else if (S_ISREG(ip
->i_d
.di_mode
)) {
956 if (xflags
& XFS_XFLAG_REALTIME
)
957 di_flags
|= XFS_DIFLAG_REALTIME
;
958 if (xflags
& XFS_XFLAG_EXTSIZE
)
959 di_flags
|= XFS_DIFLAG_EXTSIZE
;
962 ip
->i_d
.di_flags
= di_flags
;
966 xfs_diflags_to_linux(
967 struct xfs_inode
*ip
)
969 struct inode
*inode
= VFS_I(ip
);
970 unsigned int xflags
= xfs_ip2xflags(ip
);
972 if (xflags
& XFS_XFLAG_IMMUTABLE
)
973 inode
->i_flags
|= S_IMMUTABLE
;
975 inode
->i_flags
&= ~S_IMMUTABLE
;
976 if (xflags
& XFS_XFLAG_APPEND
)
977 inode
->i_flags
|= S_APPEND
;
979 inode
->i_flags
&= ~S_APPEND
;
980 if (xflags
& XFS_XFLAG_SYNC
)
981 inode
->i_flags
|= S_SYNC
;
983 inode
->i_flags
&= ~S_SYNC
;
984 if (xflags
& XFS_XFLAG_NOATIME
)
985 inode
->i_flags
|= S_NOATIME
;
987 inode
->i_flags
&= ~S_NOATIME
;
991 xfs_ioctl_setattr_xflags(
992 struct xfs_trans
*tp
,
993 struct xfs_inode
*ip
,
996 struct xfs_mount
*mp
= ip
->i_mount
;
998 /* Can't change realtime flag if any extents are allocated. */
999 if ((ip
->i_d
.di_nextents
|| ip
->i_delayed_blks
) &&
1000 XFS_IS_REALTIME_INODE(ip
) != (fa
->fsx_xflags
& XFS_XFLAG_REALTIME
))
1003 /* If realtime flag is set then must have realtime device */
1004 if (fa
->fsx_xflags
& XFS_XFLAG_REALTIME
) {
1005 if (mp
->m_sb
.sb_rblocks
== 0 || mp
->m_sb
.sb_rextsize
== 0 ||
1006 (ip
->i_d
.di_extsize
% mp
->m_sb
.sb_rextsize
))
1011 * Can't modify an immutable/append-only file unless
1012 * we have appropriate permission.
1014 if (((ip
->i_d
.di_flags
& (XFS_DIFLAG_IMMUTABLE
| XFS_DIFLAG_APPEND
)) ||
1015 (fa
->fsx_xflags
& (XFS_XFLAG_IMMUTABLE
| XFS_XFLAG_APPEND
))) &&
1016 !capable(CAP_LINUX_IMMUTABLE
))
1019 xfs_set_diflags(ip
, fa
->fsx_xflags
);
1020 xfs_diflags_to_linux(ip
);
1021 xfs_trans_ichgtime(tp
, ip
, XFS_ICHGTIME_CHG
);
1022 xfs_trans_log_inode(tp
, ip
, XFS_ILOG_CORE
);
1023 XFS_STATS_INC(xs_ig_attrchg
);
1028 * Set up the transaction structure for the setattr operation, checking that we
1029 * have permission to do so. On success, return a clean transaction and the
1030 * inode locked exclusively ready for further operation specific checks. On
1031 * failure, return an error without modifying or locking the inode.
1033 static struct xfs_trans
*
1034 xfs_ioctl_setattr_get_trans(
1035 struct xfs_inode
*ip
)
1037 struct xfs_mount
*mp
= ip
->i_mount
;
1038 struct xfs_trans
*tp
;
1041 if (mp
->m_flags
& XFS_MOUNT_RDONLY
)
1042 return ERR_PTR(-EROFS
);
1043 if (XFS_FORCED_SHUTDOWN(mp
))
1044 return ERR_PTR(-EIO
);
1046 tp
= xfs_trans_alloc(mp
, XFS_TRANS_SETATTR_NOT_SIZE
);
1047 error
= xfs_trans_reserve(tp
, &M_RES(mp
)->tr_ichange
, 0, 0);
1051 xfs_ilock(ip
, XFS_ILOCK_EXCL
);
1052 xfs_trans_ijoin(tp
, ip
, XFS_ILOCK_EXCL
);
1055 * CAP_FOWNER overrides the following restrictions:
1057 * The user ID of the calling process must be equal to the file owner
1058 * ID, except in cases where the CAP_FSETID capability is applicable.
1060 if (!inode_owner_or_capable(VFS_I(ip
))) {
1065 if (mp
->m_flags
& XFS_MOUNT_WSYNC
)
1066 xfs_trans_set_sync(tp
);
1071 xfs_trans_cancel(tp
, 0);
1072 return ERR_PTR(error
);
1076 * extent size hint validation is somewhat cumbersome. Rules are:
1078 * 1. extent size hint is only valid for directories and regular files
1079 * 2. XFS_XFLAG_EXTSIZE is only valid for regular files
1080 * 3. XFS_XFLAG_EXTSZINHERIT is only valid for directories.
1081 * 4. can only be changed on regular files if no extents are allocated
1082 * 5. can be changed on directories at any time
1083 * 6. extsize hint of 0 turns off hints, clears inode flags.
1084 * 7. Extent size must be a multiple of the appropriate block size.
1085 * 8. for non-realtime files, the extent size hint must be limited
1086 * to half the AG size to avoid alignment extending the extent beyond the
1090 xfs_ioctl_setattr_check_extsize(
1091 struct xfs_inode
*ip
,
1094 struct xfs_mount
*mp
= ip
->i_mount
;
1096 if ((fa
->fsx_xflags
& XFS_XFLAG_EXTSIZE
) && !S_ISREG(ip
->i_d
.di_mode
))
1099 if ((fa
->fsx_xflags
& XFS_XFLAG_EXTSZINHERIT
) &&
1100 !S_ISDIR(ip
->i_d
.di_mode
))
1103 if (S_ISREG(ip
->i_d
.di_mode
) && ip
->i_d
.di_nextents
&&
1104 ((ip
->i_d
.di_extsize
<< mp
->m_sb
.sb_blocklog
) != fa
->fsx_extsize
))
1107 if (fa
->fsx_extsize
!= 0) {
1109 xfs_fsblock_t extsize_fsb
;
1111 extsize_fsb
= XFS_B_TO_FSB(mp
, fa
->fsx_extsize
);
1112 if (extsize_fsb
> MAXEXTLEN
)
1115 if (XFS_IS_REALTIME_INODE(ip
) ||
1116 (fa
->fsx_xflags
& XFS_XFLAG_REALTIME
)) {
1117 size
= mp
->m_sb
.sb_rextsize
<< mp
->m_sb
.sb_blocklog
;
1119 size
= mp
->m_sb
.sb_blocksize
;
1120 if (extsize_fsb
> mp
->m_sb
.sb_agblocks
/ 2)
1124 if (fa
->fsx_extsize
% size
)
1127 fa
->fsx_xflags
&= ~(XFS_XFLAG_EXTSIZE
| XFS_XFLAG_EXTSZINHERIT
);
1133 xfs_ioctl_setattr_check_projid(
1134 struct xfs_inode
*ip
,
1137 /* Disallow 32bit project ids if projid32bit feature is not enabled. */
1138 if (fa
->fsx_projid
> (__uint16_t
)-1 &&
1139 !xfs_sb_version_hasprojid32bit(&ip
->i_mount
->m_sb
))
1143 * Project Quota ID state is only allowed to change from within the init
1144 * namespace. Enforce that restriction only if we are trying to change
1145 * the quota ID state. Everything else is allowed in user namespaces.
1147 if (current_user_ns() == &init_user_ns
)
1150 if (xfs_get_projid(ip
) != fa
->fsx_projid
)
1152 if ((fa
->fsx_xflags
& XFS_XFLAG_PROJINHERIT
) !=
1153 (ip
->i_d
.di_flags
& XFS_DIFLAG_PROJINHERIT
))
1164 struct xfs_mount
*mp
= ip
->i_mount
;
1165 struct xfs_trans
*tp
;
1166 struct xfs_dquot
*udqp
= NULL
;
1167 struct xfs_dquot
*pdqp
= NULL
;
1168 struct xfs_dquot
*olddquot
= NULL
;
1171 trace_xfs_ioctl_setattr(ip
);
1173 code
= xfs_ioctl_setattr_check_projid(ip
, fa
);
1178 * If disk quotas is on, we make sure that the dquots do exist on disk,
1179 * before we start any other transactions. Trying to do this later
1180 * is messy. We don't care to take a readlock to look at the ids
1181 * in inode here, because we can't hold it across the trans_reserve.
1182 * If the IDs do change before we take the ilock, we're covered
1183 * because the i_*dquot fields will get updated anyway.
1185 if (XFS_IS_QUOTA_ON(mp
)) {
1186 code
= xfs_qm_vop_dqalloc(ip
, ip
->i_d
.di_uid
,
1187 ip
->i_d
.di_gid
, fa
->fsx_projid
,
1188 XFS_QMOPT_PQUOTA
, &udqp
, NULL
, &pdqp
);
1193 tp
= xfs_ioctl_setattr_get_trans(ip
);
1196 goto error_free_dquots
;
1200 if (XFS_IS_QUOTA_RUNNING(mp
) && XFS_IS_PQUOTA_ON(mp
) &&
1201 xfs_get_projid(ip
) != fa
->fsx_projid
) {
1202 code
= xfs_qm_vop_chown_reserve(tp
, ip
, udqp
, NULL
, pdqp
,
1203 capable(CAP_FOWNER
) ? XFS_QMOPT_FORCE_RES
: 0);
1204 if (code
) /* out of quota */
1205 goto error_trans_cancel
;
1208 code
= xfs_ioctl_setattr_check_extsize(ip
, fa
);
1210 goto error_trans_cancel
;
1212 code
= xfs_ioctl_setattr_xflags(tp
, ip
, fa
);
1214 goto error_trans_cancel
;
1217 * Change file ownership. Must be the owner or privileged. CAP_FSETID
1218 * overrides the following restrictions:
1220 * The set-user-ID and set-group-ID bits of a file will be cleared upon
1221 * successful return from chown()
1224 if ((ip
->i_d
.di_mode
& (S_ISUID
|S_ISGID
)) &&
1225 !capable_wrt_inode_uidgid(VFS_I(ip
), CAP_FSETID
))
1226 ip
->i_d
.di_mode
&= ~(S_ISUID
|S_ISGID
);
1228 /* Change the ownerships and register project quota modifications */
1229 if (xfs_get_projid(ip
) != fa
->fsx_projid
) {
1230 if (XFS_IS_QUOTA_RUNNING(mp
) && XFS_IS_PQUOTA_ON(mp
)) {
1231 olddquot
= xfs_qm_vop_chown(tp
, ip
,
1232 &ip
->i_pdquot
, pdqp
);
1234 ASSERT(ip
->i_d
.di_version
> 1);
1235 xfs_set_projid(ip
, fa
->fsx_projid
);
1239 * Only set the extent size hint if we've already determined that the
1240 * extent size hint should be set on the inode. If no extent size flags
1241 * are set on the inode then unconditionally clear the extent size hint.
1243 if (ip
->i_d
.di_flags
& (XFS_DIFLAG_EXTSIZE
| XFS_DIFLAG_EXTSZINHERIT
))
1244 ip
->i_d
.di_extsize
= fa
->fsx_extsize
>> mp
->m_sb
.sb_blocklog
;
1246 ip
->i_d
.di_extsize
= 0;
1248 code
= xfs_trans_commit(tp
, 0);
1251 * Release any dquot(s) the inode had kept before chown.
1253 xfs_qm_dqrele(olddquot
);
1254 xfs_qm_dqrele(udqp
);
1255 xfs_qm_dqrele(pdqp
);
1260 xfs_trans_cancel(tp
, 0);
1262 xfs_qm_dqrele(udqp
);
1263 xfs_qm_dqrele(pdqp
);
1276 if (copy_from_user(&fa
, arg
, sizeof(fa
)))
1279 error
= mnt_want_write_file(filp
);
1282 error
= xfs_ioctl_setattr(ip
, &fa
);
1283 mnt_drop_write_file(filp
);
1294 flags
= xfs_di2lxflags(ip
->i_d
.di_flags
);
1295 if (copy_to_user(arg
, &flags
, sizeof(flags
)))
1302 struct xfs_inode
*ip
,
1306 struct xfs_trans
*tp
;
1311 if (copy_from_user(&flags
, arg
, sizeof(flags
)))
1314 if (flags
& ~(FS_IMMUTABLE_FL
| FS_APPEND_FL
| \
1315 FS_NOATIME_FL
| FS_NODUMP_FL
| \
1319 fa
.fsx_xflags
= xfs_merge_ioc_xflags(flags
, xfs_ip2xflags(ip
));
1321 error
= mnt_want_write_file(filp
);
1325 tp
= xfs_ioctl_setattr_get_trans(ip
);
1327 error
= PTR_ERR(tp
);
1328 goto out_drop_write
;
1331 error
= xfs_ioctl_setattr_xflags(tp
, ip
, &fa
);
1333 xfs_trans_cancel(tp
, 0);
1334 goto out_drop_write
;
1337 error
= xfs_trans_commit(tp
, 0);
1339 mnt_drop_write_file(filp
);
1344 xfs_getbmap_format(void **ap
, struct getbmapx
*bmv
, int *full
)
1346 struct getbmap __user
*base
= (struct getbmap __user
*)*ap
;
1348 /* copy only getbmap portion (not getbmapx) */
1349 if (copy_to_user(base
, bmv
, sizeof(struct getbmap
)))
1352 *ap
+= sizeof(struct getbmap
);
1358 struct xfs_inode
*ip
,
1363 struct getbmapx bmx
;
1366 if (copy_from_user(&bmx
, arg
, sizeof(struct getbmapx
)))
1369 if (bmx
.bmv_count
< 2)
1372 bmx
.bmv_iflags
= (cmd
== XFS_IOC_GETBMAPA
? BMV_IF_ATTRFORK
: 0);
1373 if (ioflags
& XFS_IO_INVIS
)
1374 bmx
.bmv_iflags
|= BMV_IF_NO_DMAPI_READ
;
1376 error
= xfs_getbmap(ip
, &bmx
, xfs_getbmap_format
,
1377 (__force
struct getbmap
*)arg
+1);
1381 /* copy back header - only size of getbmap */
1382 if (copy_to_user(arg
, &bmx
, sizeof(struct getbmap
)))
1388 xfs_getbmapx_format(void **ap
, struct getbmapx
*bmv
, int *full
)
1390 struct getbmapx __user
*base
= (struct getbmapx __user
*)*ap
;
1392 if (copy_to_user(base
, bmv
, sizeof(struct getbmapx
)))
1395 *ap
+= sizeof(struct getbmapx
);
1401 struct xfs_inode
*ip
,
1404 struct getbmapx bmx
;
1407 if (copy_from_user(&bmx
, arg
, sizeof(bmx
)))
1410 if (bmx
.bmv_count
< 2)
1413 if (bmx
.bmv_iflags
& (~BMV_IF_VALID
))
1416 error
= xfs_getbmap(ip
, &bmx
, xfs_getbmapx_format
,
1417 (__force
struct getbmapx
*)arg
+1);
1421 /* copy back header */
1422 if (copy_to_user(arg
, &bmx
, sizeof(struct getbmapx
)))
1432 xfs_inode_t
*ip
, *tip
;
1436 /* Pull information for the target fd */
1437 f
= fdget((int)sxp
->sx_fdtarget
);
1443 if (!(f
.file
->f_mode
& FMODE_WRITE
) ||
1444 !(f
.file
->f_mode
& FMODE_READ
) ||
1445 (f
.file
->f_flags
& O_APPEND
)) {
1450 tmp
= fdget((int)sxp
->sx_fdtmp
);
1456 if (!(tmp
.file
->f_mode
& FMODE_WRITE
) ||
1457 !(tmp
.file
->f_mode
& FMODE_READ
) ||
1458 (tmp
.file
->f_flags
& O_APPEND
)) {
1460 goto out_put_tmp_file
;
1463 if (IS_SWAPFILE(file_inode(f
.file
)) ||
1464 IS_SWAPFILE(file_inode(tmp
.file
))) {
1466 goto out_put_tmp_file
;
1469 ip
= XFS_I(file_inode(f
.file
));
1470 tip
= XFS_I(file_inode(tmp
.file
));
1472 if (ip
->i_mount
!= tip
->i_mount
) {
1474 goto out_put_tmp_file
;
1477 if (ip
->i_ino
== tip
->i_ino
) {
1479 goto out_put_tmp_file
;
1482 if (XFS_FORCED_SHUTDOWN(ip
->i_mount
)) {
1484 goto out_put_tmp_file
;
1487 error
= xfs_swap_extents(ip
, tip
, sxp
);
1498 * Note: some of the ioctl's return positive numbers as a
1499 * byte count indicating success, such as readlink_by_handle.
1500 * So we don't "sign flip" like most other routines. This means
1501 * true errors need to be returned as a negative value.
1509 struct inode
*inode
= file_inode(filp
);
1510 struct xfs_inode
*ip
= XFS_I(inode
);
1511 struct xfs_mount
*mp
= ip
->i_mount
;
1512 void __user
*arg
= (void __user
*)p
;
1516 if (filp
->f_mode
& FMODE_NOCMTIME
)
1517 ioflags
|= XFS_IO_INVIS
;
1519 trace_xfs_file_ioctl(ip
);
1523 return xfs_ioc_trim(mp
, arg
);
1524 case XFS_IOC_ALLOCSP
:
1525 case XFS_IOC_FREESP
:
1526 case XFS_IOC_RESVSP
:
1527 case XFS_IOC_UNRESVSP
:
1528 case XFS_IOC_ALLOCSP64
:
1529 case XFS_IOC_FREESP64
:
1530 case XFS_IOC_RESVSP64
:
1531 case XFS_IOC_UNRESVSP64
:
1532 case XFS_IOC_ZERO_RANGE
: {
1535 if (copy_from_user(&bf
, arg
, sizeof(bf
)))
1537 return xfs_ioc_space(ip
, inode
, filp
, ioflags
, cmd
, &bf
);
1539 case XFS_IOC_DIOINFO
: {
1541 xfs_buftarg_t
*target
=
1542 XFS_IS_REALTIME_INODE(ip
) ?
1543 mp
->m_rtdev_targp
: mp
->m_ddev_targp
;
1545 da
.d_mem
= da
.d_miniosz
= target
->bt_logical_sectorsize
;
1546 da
.d_maxiosz
= INT_MAX
& ~(da
.d_miniosz
- 1);
1548 if (copy_to_user(arg
, &da
, sizeof(da
)))
1553 case XFS_IOC_FSBULKSTAT_SINGLE
:
1554 case XFS_IOC_FSBULKSTAT
:
1555 case XFS_IOC_FSINUMBERS
:
1556 return xfs_ioc_bulkstat(mp
, cmd
, arg
);
1558 case XFS_IOC_FSGEOMETRY_V1
:
1559 return xfs_ioc_fsgeometry_v1(mp
, arg
);
1561 case XFS_IOC_FSGEOMETRY
:
1562 return xfs_ioc_fsgeometry(mp
, arg
);
1564 case XFS_IOC_GETVERSION
:
1565 return put_user(inode
->i_generation
, (int __user
*)arg
);
1567 case XFS_IOC_FSGETXATTR
:
1568 return xfs_ioc_fsgetxattr(ip
, 0, arg
);
1569 case XFS_IOC_FSGETXATTRA
:
1570 return xfs_ioc_fsgetxattr(ip
, 1, arg
);
1571 case XFS_IOC_FSSETXATTR
:
1572 return xfs_ioc_fssetxattr(ip
, filp
, arg
);
1573 case XFS_IOC_GETXFLAGS
:
1574 return xfs_ioc_getxflags(ip
, arg
);
1575 case XFS_IOC_SETXFLAGS
:
1576 return xfs_ioc_setxflags(ip
, filp
, arg
);
1578 case XFS_IOC_FSSETDM
: {
1579 struct fsdmidata dmi
;
1581 if (copy_from_user(&dmi
, arg
, sizeof(dmi
)))
1584 error
= mnt_want_write_file(filp
);
1588 error
= xfs_set_dmattrs(ip
, dmi
.fsd_dmevmask
,
1590 mnt_drop_write_file(filp
);
1594 case XFS_IOC_GETBMAP
:
1595 case XFS_IOC_GETBMAPA
:
1596 return xfs_ioc_getbmap(ip
, ioflags
, cmd
, arg
);
1598 case XFS_IOC_GETBMAPX
:
1599 return xfs_ioc_getbmapx(ip
, arg
);
1601 case XFS_IOC_FD_TO_HANDLE
:
1602 case XFS_IOC_PATH_TO_HANDLE
:
1603 case XFS_IOC_PATH_TO_FSHANDLE
: {
1604 xfs_fsop_handlereq_t hreq
;
1606 if (copy_from_user(&hreq
, arg
, sizeof(hreq
)))
1608 return xfs_find_handle(cmd
, &hreq
);
1610 case XFS_IOC_OPEN_BY_HANDLE
: {
1611 xfs_fsop_handlereq_t hreq
;
1613 if (copy_from_user(&hreq
, arg
, sizeof(xfs_fsop_handlereq_t
)))
1615 return xfs_open_by_handle(filp
, &hreq
);
1617 case XFS_IOC_FSSETDM_BY_HANDLE
:
1618 return xfs_fssetdm_by_handle(filp
, arg
);
1620 case XFS_IOC_READLINK_BY_HANDLE
: {
1621 xfs_fsop_handlereq_t hreq
;
1623 if (copy_from_user(&hreq
, arg
, sizeof(xfs_fsop_handlereq_t
)))
1625 return xfs_readlink_by_handle(filp
, &hreq
);
1627 case XFS_IOC_ATTRLIST_BY_HANDLE
:
1628 return xfs_attrlist_by_handle(filp
, arg
);
1630 case XFS_IOC_ATTRMULTI_BY_HANDLE
:
1631 return xfs_attrmulti_by_handle(filp
, arg
);
1633 case XFS_IOC_SWAPEXT
: {
1634 struct xfs_swapext sxp
;
1636 if (copy_from_user(&sxp
, arg
, sizeof(xfs_swapext_t
)))
1638 error
= mnt_want_write_file(filp
);
1641 error
= xfs_ioc_swapext(&sxp
);
1642 mnt_drop_write_file(filp
);
1646 case XFS_IOC_FSCOUNTS
: {
1647 xfs_fsop_counts_t out
;
1649 error
= xfs_fs_counts(mp
, &out
);
1653 if (copy_to_user(arg
, &out
, sizeof(out
)))
1658 case XFS_IOC_SET_RESBLKS
: {
1659 xfs_fsop_resblks_t inout
;
1662 if (!capable(CAP_SYS_ADMIN
))
1665 if (mp
->m_flags
& XFS_MOUNT_RDONLY
)
1668 if (copy_from_user(&inout
, arg
, sizeof(inout
)))
1671 error
= mnt_want_write_file(filp
);
1675 /* input parameter is passed in resblks field of structure */
1677 error
= xfs_reserve_blocks(mp
, &in
, &inout
);
1678 mnt_drop_write_file(filp
);
1682 if (copy_to_user(arg
, &inout
, sizeof(inout
)))
1687 case XFS_IOC_GET_RESBLKS
: {
1688 xfs_fsop_resblks_t out
;
1690 if (!capable(CAP_SYS_ADMIN
))
1693 error
= xfs_reserve_blocks(mp
, NULL
, &out
);
1697 if (copy_to_user(arg
, &out
, sizeof(out
)))
1703 case XFS_IOC_FSGROWFSDATA
: {
1704 xfs_growfs_data_t in
;
1706 if (copy_from_user(&in
, arg
, sizeof(in
)))
1709 error
= mnt_want_write_file(filp
);
1712 error
= xfs_growfs_data(mp
, &in
);
1713 mnt_drop_write_file(filp
);
1717 case XFS_IOC_FSGROWFSLOG
: {
1718 xfs_growfs_log_t in
;
1720 if (copy_from_user(&in
, arg
, sizeof(in
)))
1723 error
= mnt_want_write_file(filp
);
1726 error
= xfs_growfs_log(mp
, &in
);
1727 mnt_drop_write_file(filp
);
1731 case XFS_IOC_FSGROWFSRT
: {
1734 if (copy_from_user(&in
, arg
, sizeof(in
)))
1737 error
= mnt_want_write_file(filp
);
1740 error
= xfs_growfs_rt(mp
, &in
);
1741 mnt_drop_write_file(filp
);
1745 case XFS_IOC_GOINGDOWN
: {
1748 if (!capable(CAP_SYS_ADMIN
))
1751 if (get_user(in
, (__uint32_t __user
*)arg
))
1754 return xfs_fs_goingdown(mp
, in
);
1757 case XFS_IOC_ERROR_INJECTION
: {
1758 xfs_error_injection_t in
;
1760 if (!capable(CAP_SYS_ADMIN
))
1763 if (copy_from_user(&in
, arg
, sizeof(in
)))
1766 return xfs_errortag_add(in
.errtag
, mp
);
1769 case XFS_IOC_ERROR_CLEARALL
:
1770 if (!capable(CAP_SYS_ADMIN
))
1773 return xfs_errortag_clearall(mp
, 1);
1775 case XFS_IOC_FREE_EOFBLOCKS
: {
1776 struct xfs_fs_eofblocks eofb
;
1777 struct xfs_eofblocks keofb
;
1779 if (!capable(CAP_SYS_ADMIN
))
1782 if (mp
->m_flags
& XFS_MOUNT_RDONLY
)
1785 if (copy_from_user(&eofb
, arg
, sizeof(eofb
)))
1788 error
= xfs_fs_eofblocks_from_user(&eofb
, &keofb
);
1792 return xfs_icache_free_eofblocks(mp
, &keofb
);