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"
26 #include "xfs_mount.h"
27 #include "xfs_inode.h"
28 #include "xfs_ioctl.h"
29 #include "xfs_alloc.h"
30 #include "xfs_rtalloc.h"
31 #include "xfs_itable.h"
32 #include "xfs_error.h"
35 #include "xfs_bmap_util.h"
36 #include "xfs_fsops.h"
37 #include "xfs_discard.h"
38 #include "xfs_quota.h"
39 #include "xfs_export.h"
40 #include "xfs_trace.h"
41 #include "xfs_icache.h"
42 #include "xfs_symlink.h"
43 #include "xfs_dinode.h"
44 #include "xfs_trans.h"
46 #include <linux/capability.h>
47 #include <linux/dcache.h>
48 #include <linux/mount.h>
49 #include <linux/namei.h>
50 #include <linux/pagemap.h>
51 #include <linux/slab.h>
52 #include <linux/exportfs.h>
55 * xfs_find_handle maps from userspace xfs_fsop_handlereq structure to
56 * a file or fs handle.
58 * XFS_IOC_PATH_TO_FSHANDLE
59 * returns fs handle for a mount point or path within that mount point
60 * XFS_IOC_FD_TO_HANDLE
61 * returns full handle for a FD opened in user space
62 * XFS_IOC_PATH_TO_HANDLE
63 * returns full handle for a path
68 xfs_fsop_handlereq_t
*hreq
)
78 if (cmd
== XFS_IOC_FD_TO_HANDLE
) {
82 inode
= file_inode(f
.file
);
84 error
= user_lpath((const char __user
*)hreq
->path
, &path
);
87 inode
= path
.dentry
->d_inode
;
92 * We can only generate handles for inodes residing on a XFS filesystem,
93 * and only for regular files, directories or symbolic links.
96 if (inode
->i_sb
->s_magic
!= XFS_SB_MAGIC
)
100 if (!S_ISREG(inode
->i_mode
) &&
101 !S_ISDIR(inode
->i_mode
) &&
102 !S_ISLNK(inode
->i_mode
))
106 memcpy(&handle
.ha_fsid
, ip
->i_mount
->m_fixedfsid
, sizeof(xfs_fsid_t
));
108 if (cmd
== XFS_IOC_PATH_TO_FSHANDLE
) {
110 * This handle only contains an fsid, zero the rest.
112 memset(&handle
.ha_fid
, 0, sizeof(handle
.ha_fid
));
113 hsize
= sizeof(xfs_fsid_t
);
115 handle
.ha_fid
.fid_len
= sizeof(xfs_fid_t
) -
116 sizeof(handle
.ha_fid
.fid_len
);
117 handle
.ha_fid
.fid_pad
= 0;
118 handle
.ha_fid
.fid_gen
= ip
->i_d
.di_gen
;
119 handle
.ha_fid
.fid_ino
= ip
->i_ino
;
121 hsize
= XFS_HSIZE(handle
);
125 if (copy_to_user(hreq
->ohandle
, &handle
, hsize
) ||
126 copy_to_user(hreq
->ohandlen
, &hsize
, sizeof(__s32
)))
132 if (cmd
== XFS_IOC_FD_TO_HANDLE
)
140 * No need to do permission checks on the various pathname components
141 * as the handle operations are privileged.
144 xfs_handle_acceptable(
146 struct dentry
*dentry
)
152 * Convert userspace handle data into a dentry.
155 xfs_handle_to_dentry(
156 struct file
*parfilp
,
157 void __user
*uhandle
,
161 struct xfs_fid64 fid
;
164 * Only allow handle opens under a directory.
166 if (!S_ISDIR(file_inode(parfilp
)->i_mode
))
167 return ERR_PTR(-ENOTDIR
);
169 if (hlen
!= sizeof(xfs_handle_t
))
170 return ERR_PTR(-EINVAL
);
171 if (copy_from_user(&handle
, uhandle
, hlen
))
172 return ERR_PTR(-EFAULT
);
173 if (handle
.ha_fid
.fid_len
!=
174 sizeof(handle
.ha_fid
) - sizeof(handle
.ha_fid
.fid_len
))
175 return ERR_PTR(-EINVAL
);
177 memset(&fid
, 0, sizeof(struct fid
));
178 fid
.ino
= handle
.ha_fid
.fid_ino
;
179 fid
.gen
= handle
.ha_fid
.fid_gen
;
181 return exportfs_decode_fh(parfilp
->f_path
.mnt
, (struct fid
*)&fid
, 3,
182 FILEID_INO32_GEN
| XFS_FILEID_TYPE_64FLAG
,
183 xfs_handle_acceptable
, NULL
);
186 STATIC
struct dentry
*
187 xfs_handlereq_to_dentry(
188 struct file
*parfilp
,
189 xfs_fsop_handlereq_t
*hreq
)
191 return xfs_handle_to_dentry(parfilp
, hreq
->ihandle
, hreq
->ihandlen
);
196 struct file
*parfilp
,
197 xfs_fsop_handlereq_t
*hreq
)
199 const struct cred
*cred
= current_cred();
205 struct dentry
*dentry
;
209 if (!capable(CAP_SYS_ADMIN
))
210 return -XFS_ERROR(EPERM
);
212 dentry
= xfs_handlereq_to_dentry(parfilp
, hreq
);
214 return PTR_ERR(dentry
);
215 inode
= dentry
->d_inode
;
217 /* Restrict xfs_open_by_handle to directories & regular files. */
218 if (!(S_ISREG(inode
->i_mode
) || S_ISDIR(inode
->i_mode
))) {
219 error
= -XFS_ERROR(EPERM
);
223 #if BITS_PER_LONG != 32
224 hreq
->oflags
|= O_LARGEFILE
;
227 permflag
= hreq
->oflags
;
228 fmode
= OPEN_FMODE(permflag
);
229 if ((!(permflag
& O_APPEND
) || (permflag
& O_TRUNC
)) &&
230 (fmode
& FMODE_WRITE
) && IS_APPEND(inode
)) {
231 error
= -XFS_ERROR(EPERM
);
235 if ((fmode
& FMODE_WRITE
) && IS_IMMUTABLE(inode
)) {
236 error
= -XFS_ERROR(EACCES
);
240 /* Can't write directories. */
241 if (S_ISDIR(inode
->i_mode
) && (fmode
& FMODE_WRITE
)) {
242 error
= -XFS_ERROR(EISDIR
);
246 fd
= get_unused_fd_flags(0);
252 path
.mnt
= parfilp
->f_path
.mnt
;
253 path
.dentry
= dentry
;
254 filp
= dentry_open(&path
, hreq
->oflags
, cred
);
258 return PTR_ERR(filp
);
261 if (S_ISREG(inode
->i_mode
)) {
262 filp
->f_flags
|= O_NOATIME
;
263 filp
->f_mode
|= FMODE_NOCMTIME
;
266 fd_install(fd
, filp
);
275 xfs_readlink_by_handle(
276 struct file
*parfilp
,
277 xfs_fsop_handlereq_t
*hreq
)
279 struct dentry
*dentry
;
284 if (!capable(CAP_SYS_ADMIN
))
285 return -XFS_ERROR(EPERM
);
287 dentry
= xfs_handlereq_to_dentry(parfilp
, hreq
);
289 return PTR_ERR(dentry
);
291 /* Restrict this handle operation to symlinks only. */
292 if (!S_ISLNK(dentry
->d_inode
->i_mode
)) {
293 error
= -XFS_ERROR(EINVAL
);
297 if (copy_from_user(&olen
, hreq
->ohandlen
, sizeof(__u32
))) {
298 error
= -XFS_ERROR(EFAULT
);
302 link
= kmalloc(MAXPATHLEN
+1, GFP_KERNEL
);
304 error
= -XFS_ERROR(ENOMEM
);
308 error
= -xfs_readlink(XFS_I(dentry
->d_inode
), link
);
311 error
= readlink_copy(hreq
->ohandle
, olen
, link
);
328 xfs_mount_t
*mp
= ip
->i_mount
;
332 if (!capable(CAP_SYS_ADMIN
))
333 return XFS_ERROR(EPERM
);
335 if (XFS_FORCED_SHUTDOWN(mp
))
336 return XFS_ERROR(EIO
);
338 tp
= xfs_trans_alloc(mp
, XFS_TRANS_SET_DMATTRS
);
339 error
= xfs_trans_reserve(tp
, &M_RES(mp
)->tr_ichange
, 0, 0);
341 xfs_trans_cancel(tp
, 0);
344 xfs_ilock(ip
, XFS_ILOCK_EXCL
);
345 xfs_trans_ijoin(tp
, ip
, XFS_ILOCK_EXCL
);
347 ip
->i_d
.di_dmevmask
= evmask
;
348 ip
->i_d
.di_dmstate
= state
;
350 xfs_trans_log_inode(tp
, ip
, XFS_ILOG_CORE
);
351 error
= xfs_trans_commit(tp
, 0);
357 xfs_fssetdm_by_handle(
358 struct file
*parfilp
,
362 struct fsdmidata fsd
;
363 xfs_fsop_setdm_handlereq_t dmhreq
;
364 struct dentry
*dentry
;
366 if (!capable(CAP_MKNOD
))
367 return -XFS_ERROR(EPERM
);
368 if (copy_from_user(&dmhreq
, arg
, sizeof(xfs_fsop_setdm_handlereq_t
)))
369 return -XFS_ERROR(EFAULT
);
371 error
= mnt_want_write_file(parfilp
);
375 dentry
= xfs_handlereq_to_dentry(parfilp
, &dmhreq
.hreq
);
376 if (IS_ERR(dentry
)) {
377 mnt_drop_write_file(parfilp
);
378 return PTR_ERR(dentry
);
381 if (IS_IMMUTABLE(dentry
->d_inode
) || IS_APPEND(dentry
->d_inode
)) {
382 error
= -XFS_ERROR(EPERM
);
386 if (copy_from_user(&fsd
, dmhreq
.data
, sizeof(fsd
))) {
387 error
= -XFS_ERROR(EFAULT
);
391 error
= -xfs_set_dmattrs(XFS_I(dentry
->d_inode
), fsd
.fsd_dmevmask
,
395 mnt_drop_write_file(parfilp
);
401 xfs_attrlist_by_handle(
402 struct file
*parfilp
,
406 attrlist_cursor_kern_t
*cursor
;
407 xfs_fsop_attrlist_handlereq_t al_hreq
;
408 struct dentry
*dentry
;
411 if (!capable(CAP_SYS_ADMIN
))
412 return -XFS_ERROR(EPERM
);
413 if (copy_from_user(&al_hreq
, arg
, sizeof(xfs_fsop_attrlist_handlereq_t
)))
414 return -XFS_ERROR(EFAULT
);
415 if (al_hreq
.buflen
< sizeof(struct attrlist
) ||
416 al_hreq
.buflen
> XATTR_LIST_MAX
)
417 return -XFS_ERROR(EINVAL
);
420 * Reject flags, only allow namespaces.
422 if (al_hreq
.flags
& ~(ATTR_ROOT
| ATTR_SECURE
))
423 return -XFS_ERROR(EINVAL
);
425 dentry
= xfs_handlereq_to_dentry(parfilp
, &al_hreq
.hreq
);
427 return PTR_ERR(dentry
);
429 kbuf
= kmem_zalloc_large(al_hreq
.buflen
, KM_SLEEP
);
433 cursor
= (attrlist_cursor_kern_t
*)&al_hreq
.pos
;
434 error
= -xfs_attr_list(XFS_I(dentry
->d_inode
), kbuf
, al_hreq
.buflen
,
435 al_hreq
.flags
, cursor
);
439 if (copy_to_user(al_hreq
.buffer
, kbuf
, al_hreq
.buflen
))
450 xfs_attrmulti_attr_get(
453 unsigned char __user
*ubuf
,
460 if (*len
> XATTR_SIZE_MAX
)
462 kbuf
= kmem_zalloc_large(*len
, KM_SLEEP
);
466 error
= xfs_attr_get(XFS_I(inode
), name
, kbuf
, (int *)len
, flags
);
470 if (copy_to_user(ubuf
, kbuf
, *len
))
479 xfs_attrmulti_attr_set(
482 const unsigned char __user
*ubuf
,
489 if (IS_IMMUTABLE(inode
) || IS_APPEND(inode
))
491 if (len
> XATTR_SIZE_MAX
)
494 kbuf
= memdup_user(ubuf
, len
);
496 return PTR_ERR(kbuf
);
498 error
= xfs_attr_set(XFS_I(inode
), name
, kbuf
, len
, flags
);
504 xfs_attrmulti_attr_remove(
509 if (IS_IMMUTABLE(inode
) || IS_APPEND(inode
))
511 return xfs_attr_remove(XFS_I(inode
), name
, flags
);
515 xfs_attrmulti_by_handle(
516 struct file
*parfilp
,
520 xfs_attr_multiop_t
*ops
;
521 xfs_fsop_attrmulti_handlereq_t am_hreq
;
522 struct dentry
*dentry
;
523 unsigned int i
, size
;
524 unsigned char *attr_name
;
526 if (!capable(CAP_SYS_ADMIN
))
527 return -XFS_ERROR(EPERM
);
528 if (copy_from_user(&am_hreq
, arg
, sizeof(xfs_fsop_attrmulti_handlereq_t
)))
529 return -XFS_ERROR(EFAULT
);
532 if (am_hreq
.opcount
>= INT_MAX
/ sizeof(xfs_attr_multiop_t
))
535 dentry
= xfs_handlereq_to_dentry(parfilp
, &am_hreq
.hreq
);
537 return PTR_ERR(dentry
);
540 size
= am_hreq
.opcount
* sizeof(xfs_attr_multiop_t
);
541 if (!size
|| size
> 16 * PAGE_SIZE
)
544 ops
= memdup_user(am_hreq
.ops
, size
);
546 error
= PTR_ERR(ops
);
550 attr_name
= kmalloc(MAXNAMELEN
, GFP_KERNEL
);
555 for (i
= 0; i
< am_hreq
.opcount
; i
++) {
556 ops
[i
].am_error
= strncpy_from_user((char *)attr_name
,
557 ops
[i
].am_attrname
, MAXNAMELEN
);
558 if (ops
[i
].am_error
== 0 || ops
[i
].am_error
== MAXNAMELEN
)
560 if (ops
[i
].am_error
< 0)
563 switch (ops
[i
].am_opcode
) {
565 ops
[i
].am_error
= xfs_attrmulti_attr_get(
566 dentry
->d_inode
, attr_name
,
567 ops
[i
].am_attrvalue
, &ops
[i
].am_length
,
571 ops
[i
].am_error
= mnt_want_write_file(parfilp
);
574 ops
[i
].am_error
= xfs_attrmulti_attr_set(
575 dentry
->d_inode
, attr_name
,
576 ops
[i
].am_attrvalue
, ops
[i
].am_length
,
578 mnt_drop_write_file(parfilp
);
581 ops
[i
].am_error
= mnt_want_write_file(parfilp
);
584 ops
[i
].am_error
= xfs_attrmulti_attr_remove(
585 dentry
->d_inode
, attr_name
,
587 mnt_drop_write_file(parfilp
);
590 ops
[i
].am_error
= EINVAL
;
594 if (copy_to_user(am_hreq
.ops
, ops
, size
))
595 error
= XFS_ERROR(EFAULT
);
607 struct xfs_inode
*ip
,
614 struct xfs_mount
*mp
= ip
->i_mount
;
615 struct xfs_trans
*tp
;
617 bool setprealloc
= false;
618 bool clrprealloc
= false;
622 * Only allow the sys admin to reserve space unless
623 * unwritten extents are enabled.
625 if (!xfs_sb_version_hasextflgbit(&ip
->i_mount
->m_sb
) &&
626 !capable(CAP_SYS_ADMIN
))
627 return -XFS_ERROR(EPERM
);
629 if (inode
->i_flags
& (S_IMMUTABLE
|S_APPEND
))
630 return -XFS_ERROR(EPERM
);
632 if (!(filp
->f_mode
& FMODE_WRITE
))
633 return -XFS_ERROR(EBADF
);
635 if (!S_ISREG(inode
->i_mode
))
636 return -XFS_ERROR(EINVAL
);
638 error
= mnt_want_write_file(filp
);
642 xfs_ilock(ip
, XFS_IOLOCK_EXCL
);
644 switch (bf
->l_whence
) {
648 bf
->l_start
+= filp
->f_pos
;
651 bf
->l_start
+= XFS_ISIZE(ip
);
654 error
= XFS_ERROR(EINVAL
);
659 * length of <= 0 for resv/unresv/zero is invalid. length for
660 * alloc/free is ignored completely and we have no idea what userspace
661 * might have set it to, so set it to zero to allow range
665 case XFS_IOC_ZERO_RANGE
:
667 case XFS_IOC_RESVSP64
:
668 case XFS_IOC_UNRESVSP
:
669 case XFS_IOC_UNRESVSP64
:
670 if (bf
->l_len
<= 0) {
671 error
= XFS_ERROR(EINVAL
);
680 if (bf
->l_start
< 0 ||
681 bf
->l_start
> mp
->m_super
->s_maxbytes
||
682 bf
->l_start
+ bf
->l_len
< 0 ||
683 bf
->l_start
+ bf
->l_len
>= mp
->m_super
->s_maxbytes
) {
684 error
= XFS_ERROR(EINVAL
);
689 case XFS_IOC_ZERO_RANGE
:
690 error
= xfs_zero_file_space(ip
, bf
->l_start
, bf
->l_len
);
695 case XFS_IOC_RESVSP64
:
696 error
= xfs_alloc_file_space(ip
, bf
->l_start
, bf
->l_len
,
701 case XFS_IOC_UNRESVSP
:
702 case XFS_IOC_UNRESVSP64
:
703 error
= xfs_free_file_space(ip
, bf
->l_start
, bf
->l_len
);
705 case XFS_IOC_ALLOCSP
:
706 case XFS_IOC_ALLOCSP64
:
708 case XFS_IOC_FREESP64
:
709 if (bf
->l_start
> XFS_ISIZE(ip
)) {
710 error
= xfs_alloc_file_space(ip
, XFS_ISIZE(ip
),
711 bf
->l_start
- XFS_ISIZE(ip
), 0);
716 iattr
.ia_valid
= ATTR_SIZE
;
717 iattr
.ia_size
= bf
->l_start
;
719 error
= xfs_setattr_size(ip
, &iattr
);
725 error
= XFS_ERROR(EINVAL
);
731 tp
= xfs_trans_alloc(mp
, XFS_TRANS_WRITEID
);
732 error
= xfs_trans_reserve(tp
, &M_RES(mp
)->tr_writeid
, 0, 0);
734 xfs_trans_cancel(tp
, 0);
738 xfs_ilock(ip
, XFS_ILOCK_EXCL
);
739 xfs_trans_ijoin(tp
, ip
, XFS_ILOCK_EXCL
);
741 if (!(ioflags
& IO_INVIS
)) {
742 ip
->i_d
.di_mode
&= ~S_ISUID
;
743 if (ip
->i_d
.di_mode
& S_IXGRP
)
744 ip
->i_d
.di_mode
&= ~S_ISGID
;
745 xfs_trans_ichgtime(tp
, ip
, XFS_ICHGTIME_MOD
| XFS_ICHGTIME_CHG
);
749 ip
->i_d
.di_flags
|= XFS_DIFLAG_PREALLOC
;
750 else if (clrprealloc
)
751 ip
->i_d
.di_flags
&= ~XFS_DIFLAG_PREALLOC
;
753 xfs_trans_log_inode(tp
, ip
, XFS_ILOG_CORE
);
754 if (filp
->f_flags
& O_DSYNC
)
755 xfs_trans_set_sync(tp
);
756 error
= xfs_trans_commit(tp
, 0);
759 xfs_iunlock(ip
, XFS_IOLOCK_EXCL
);
760 mnt_drop_write_file(filp
);
770 xfs_fsop_bulkreq_t bulkreq
;
771 int count
; /* # of records returned */
772 xfs_ino_t inlast
; /* last inode number */
776 /* done = 1 if there are more stats to get and if bulkstat */
777 /* should be called again (unused here, but used in dmapi) */
779 if (!capable(CAP_SYS_ADMIN
))
782 if (XFS_FORCED_SHUTDOWN(mp
))
783 return -XFS_ERROR(EIO
);
785 if (copy_from_user(&bulkreq
, arg
, sizeof(xfs_fsop_bulkreq_t
)))
786 return -XFS_ERROR(EFAULT
);
788 if (copy_from_user(&inlast
, bulkreq
.lastip
, sizeof(__s64
)))
789 return -XFS_ERROR(EFAULT
);
791 if ((count
= bulkreq
.icount
) <= 0)
792 return -XFS_ERROR(EINVAL
);
794 if (bulkreq
.ubuffer
== NULL
)
795 return -XFS_ERROR(EINVAL
);
797 if (cmd
== XFS_IOC_FSINUMBERS
)
798 error
= xfs_inumbers(mp
, &inlast
, &count
,
799 bulkreq
.ubuffer
, xfs_inumbers_fmt
);
800 else if (cmd
== XFS_IOC_FSBULKSTAT_SINGLE
)
801 error
= xfs_bulkstat_single(mp
, &inlast
,
802 bulkreq
.ubuffer
, &done
);
803 else /* XFS_IOC_FSBULKSTAT */
804 error
= xfs_bulkstat(mp
, &inlast
, &count
, xfs_bulkstat_one
,
805 sizeof(xfs_bstat_t
), bulkreq
.ubuffer
,
811 if (bulkreq
.ocount
!= NULL
) {
812 if (copy_to_user(bulkreq
.lastip
, &inlast
,
814 return -XFS_ERROR(EFAULT
);
816 if (copy_to_user(bulkreq
.ocount
, &count
, sizeof(count
)))
817 return -XFS_ERROR(EFAULT
);
824 xfs_ioc_fsgeometry_v1(
828 xfs_fsop_geom_t fsgeo
;
831 error
= xfs_fs_geometry(mp
, &fsgeo
, 3);
836 * Caller should have passed an argument of type
837 * xfs_fsop_geom_v1_t. This is a proper subset of the
838 * xfs_fsop_geom_t that xfs_fs_geometry() fills in.
840 if (copy_to_user(arg
, &fsgeo
, sizeof(xfs_fsop_geom_v1_t
)))
841 return -XFS_ERROR(EFAULT
);
850 xfs_fsop_geom_t fsgeo
;
853 error
= xfs_fs_geometry(mp
, &fsgeo
, 4);
857 if (copy_to_user(arg
, &fsgeo
, sizeof(fsgeo
)))
858 return -XFS_ERROR(EFAULT
);
863 * Linux extended inode flags interface.
867 xfs_merge_ioc_xflags(
871 unsigned int xflags
= start
;
873 if (flags
& FS_IMMUTABLE_FL
)
874 xflags
|= XFS_XFLAG_IMMUTABLE
;
876 xflags
&= ~XFS_XFLAG_IMMUTABLE
;
877 if (flags
& FS_APPEND_FL
)
878 xflags
|= XFS_XFLAG_APPEND
;
880 xflags
&= ~XFS_XFLAG_APPEND
;
881 if (flags
& FS_SYNC_FL
)
882 xflags
|= XFS_XFLAG_SYNC
;
884 xflags
&= ~XFS_XFLAG_SYNC
;
885 if (flags
& FS_NOATIME_FL
)
886 xflags
|= XFS_XFLAG_NOATIME
;
888 xflags
&= ~XFS_XFLAG_NOATIME
;
889 if (flags
& FS_NODUMP_FL
)
890 xflags
|= XFS_XFLAG_NODUMP
;
892 xflags
&= ~XFS_XFLAG_NODUMP
;
901 unsigned int flags
= 0;
903 if (di_flags
& XFS_DIFLAG_IMMUTABLE
)
904 flags
|= FS_IMMUTABLE_FL
;
905 if (di_flags
& XFS_DIFLAG_APPEND
)
906 flags
|= FS_APPEND_FL
;
907 if (di_flags
& XFS_DIFLAG_SYNC
)
909 if (di_flags
& XFS_DIFLAG_NOATIME
)
910 flags
|= FS_NOATIME_FL
;
911 if (di_flags
& XFS_DIFLAG_NODUMP
)
912 flags
|= FS_NODUMP_FL
;
924 memset(&fa
, 0, sizeof(struct fsxattr
));
926 xfs_ilock(ip
, XFS_ILOCK_SHARED
);
927 fa
.fsx_xflags
= xfs_ip2xflags(ip
);
928 fa
.fsx_extsize
= ip
->i_d
.di_extsize
<< ip
->i_mount
->m_sb
.sb_blocklog
;
929 fa
.fsx_projid
= xfs_get_projid(ip
);
933 if (ip
->i_afp
->if_flags
& XFS_IFEXTENTS
)
934 fa
.fsx_nextents
= ip
->i_afp
->if_bytes
/
935 sizeof(xfs_bmbt_rec_t
);
937 fa
.fsx_nextents
= ip
->i_d
.di_anextents
;
941 if (ip
->i_df
.if_flags
& XFS_IFEXTENTS
)
942 fa
.fsx_nextents
= ip
->i_df
.if_bytes
/
943 sizeof(xfs_bmbt_rec_t
);
945 fa
.fsx_nextents
= ip
->i_d
.di_nextents
;
947 xfs_iunlock(ip
, XFS_ILOCK_SHARED
);
949 if (copy_to_user(arg
, &fa
, sizeof(fa
)))
956 struct xfs_inode
*ip
,
959 unsigned int di_flags
;
961 /* can't set PREALLOC this way, just preserve it */
962 di_flags
= (ip
->i_d
.di_flags
& XFS_DIFLAG_PREALLOC
);
963 if (xflags
& XFS_XFLAG_IMMUTABLE
)
964 di_flags
|= XFS_DIFLAG_IMMUTABLE
;
965 if (xflags
& XFS_XFLAG_APPEND
)
966 di_flags
|= XFS_DIFLAG_APPEND
;
967 if (xflags
& XFS_XFLAG_SYNC
)
968 di_flags
|= XFS_DIFLAG_SYNC
;
969 if (xflags
& XFS_XFLAG_NOATIME
)
970 di_flags
|= XFS_DIFLAG_NOATIME
;
971 if (xflags
& XFS_XFLAG_NODUMP
)
972 di_flags
|= XFS_DIFLAG_NODUMP
;
973 if (xflags
& XFS_XFLAG_PROJINHERIT
)
974 di_flags
|= XFS_DIFLAG_PROJINHERIT
;
975 if (xflags
& XFS_XFLAG_NODEFRAG
)
976 di_flags
|= XFS_DIFLAG_NODEFRAG
;
977 if (xflags
& XFS_XFLAG_FILESTREAM
)
978 di_flags
|= XFS_DIFLAG_FILESTREAM
;
979 if (S_ISDIR(ip
->i_d
.di_mode
)) {
980 if (xflags
& XFS_XFLAG_RTINHERIT
)
981 di_flags
|= XFS_DIFLAG_RTINHERIT
;
982 if (xflags
& XFS_XFLAG_NOSYMLINKS
)
983 di_flags
|= XFS_DIFLAG_NOSYMLINKS
;
984 if (xflags
& XFS_XFLAG_EXTSZINHERIT
)
985 di_flags
|= XFS_DIFLAG_EXTSZINHERIT
;
986 } else if (S_ISREG(ip
->i_d
.di_mode
)) {
987 if (xflags
& XFS_XFLAG_REALTIME
)
988 di_flags
|= XFS_DIFLAG_REALTIME
;
989 if (xflags
& XFS_XFLAG_EXTSIZE
)
990 di_flags
|= XFS_DIFLAG_EXTSIZE
;
993 ip
->i_d
.di_flags
= di_flags
;
997 xfs_diflags_to_linux(
998 struct xfs_inode
*ip
)
1000 struct inode
*inode
= VFS_I(ip
);
1001 unsigned int xflags
= xfs_ip2xflags(ip
);
1003 if (xflags
& XFS_XFLAG_IMMUTABLE
)
1004 inode
->i_flags
|= S_IMMUTABLE
;
1006 inode
->i_flags
&= ~S_IMMUTABLE
;
1007 if (xflags
& XFS_XFLAG_APPEND
)
1008 inode
->i_flags
|= S_APPEND
;
1010 inode
->i_flags
&= ~S_APPEND
;
1011 if (xflags
& XFS_XFLAG_SYNC
)
1012 inode
->i_flags
|= S_SYNC
;
1014 inode
->i_flags
&= ~S_SYNC
;
1015 if (xflags
& XFS_XFLAG_NOATIME
)
1016 inode
->i_flags
|= S_NOATIME
;
1018 inode
->i_flags
&= ~S_NOATIME
;
1021 #define FSX_PROJID 1
1022 #define FSX_EXTSIZE 2
1023 #define FSX_XFLAGS 4
1024 #define FSX_NONBLOCK 8
1032 struct xfs_mount
*mp
= ip
->i_mount
;
1033 struct xfs_trans
*tp
;
1034 unsigned int lock_flags
= 0;
1035 struct xfs_dquot
*udqp
= NULL
;
1036 struct xfs_dquot
*pdqp
= NULL
;
1037 struct xfs_dquot
*olddquot
= NULL
;
1040 trace_xfs_ioctl_setattr(ip
);
1042 if (mp
->m_flags
& XFS_MOUNT_RDONLY
)
1043 return XFS_ERROR(EROFS
);
1044 if (XFS_FORCED_SHUTDOWN(mp
))
1045 return XFS_ERROR(EIO
);
1048 * Disallow 32bit project ids when projid32bit feature is not enabled.
1050 if ((mask
& FSX_PROJID
) && (fa
->fsx_projid
> (__uint16_t
)-1) &&
1051 !xfs_sb_version_hasprojid32bit(&ip
->i_mount
->m_sb
))
1052 return XFS_ERROR(EINVAL
);
1055 * If disk quotas is on, we make sure that the dquots do exist on disk,
1056 * before we start any other transactions. Trying to do this later
1057 * is messy. We don't care to take a readlock to look at the ids
1058 * in inode here, because we can't hold it across the trans_reserve.
1059 * If the IDs do change before we take the ilock, we're covered
1060 * because the i_*dquot fields will get updated anyway.
1062 if (XFS_IS_QUOTA_ON(mp
) && (mask
& FSX_PROJID
)) {
1063 code
= xfs_qm_vop_dqalloc(ip
, ip
->i_d
.di_uid
,
1064 ip
->i_d
.di_gid
, fa
->fsx_projid
,
1065 XFS_QMOPT_PQUOTA
, &udqp
, NULL
, &pdqp
);
1071 * For the other attributes, we acquire the inode lock and
1072 * first do an error checking pass.
1074 tp
= xfs_trans_alloc(mp
, XFS_TRANS_SETATTR_NOT_SIZE
);
1075 code
= xfs_trans_reserve(tp
, &M_RES(mp
)->tr_ichange
, 0, 0);
1079 lock_flags
= XFS_ILOCK_EXCL
;
1080 xfs_ilock(ip
, lock_flags
);
1083 * CAP_FOWNER overrides the following restrictions:
1085 * The user ID of the calling process must be equal
1086 * to the file owner ID, except in cases where the
1087 * CAP_FSETID capability is applicable.
1089 if (!inode_owner_or_capable(VFS_I(ip
))) {
1090 code
= XFS_ERROR(EPERM
);
1095 * Do a quota reservation only if projid is actually going to change.
1096 * Only allow changing of projid from init_user_ns since it is a
1097 * non user namespace aware identifier.
1099 if (mask
& FSX_PROJID
) {
1100 if (current_user_ns() != &init_user_ns
) {
1101 code
= XFS_ERROR(EINVAL
);
1105 if (XFS_IS_QUOTA_RUNNING(mp
) &&
1106 XFS_IS_PQUOTA_ON(mp
) &&
1107 xfs_get_projid(ip
) != fa
->fsx_projid
) {
1109 code
= xfs_qm_vop_chown_reserve(tp
, ip
, udqp
, NULL
,
1110 pdqp
, capable(CAP_FOWNER
) ?
1111 XFS_QMOPT_FORCE_RES
: 0);
1112 if (code
) /* out of quota */
1117 if (mask
& FSX_EXTSIZE
) {
1119 * Can't change extent size if any extents are allocated.
1121 if (ip
->i_d
.di_nextents
&&
1122 ((ip
->i_d
.di_extsize
<< mp
->m_sb
.sb_blocklog
) !=
1124 code
= XFS_ERROR(EINVAL
); /* EFBIG? */
1129 * Extent size must be a multiple of the appropriate block
1130 * size, if set at all. It must also be smaller than the
1131 * maximum extent size supported by the filesystem.
1133 * Also, for non-realtime files, limit the extent size hint to
1134 * half the size of the AGs in the filesystem so alignment
1135 * doesn't result in extents larger than an AG.
1137 if (fa
->fsx_extsize
!= 0) {
1139 xfs_fsblock_t extsize_fsb
;
1141 extsize_fsb
= XFS_B_TO_FSB(mp
, fa
->fsx_extsize
);
1142 if (extsize_fsb
> MAXEXTLEN
) {
1143 code
= XFS_ERROR(EINVAL
);
1147 if (XFS_IS_REALTIME_INODE(ip
) ||
1148 ((mask
& FSX_XFLAGS
) &&
1149 (fa
->fsx_xflags
& XFS_XFLAG_REALTIME
))) {
1150 size
= mp
->m_sb
.sb_rextsize
<<
1151 mp
->m_sb
.sb_blocklog
;
1153 size
= mp
->m_sb
.sb_blocksize
;
1154 if (extsize_fsb
> mp
->m_sb
.sb_agblocks
/ 2) {
1155 code
= XFS_ERROR(EINVAL
);
1160 if (fa
->fsx_extsize
% size
) {
1161 code
= XFS_ERROR(EINVAL
);
1168 if (mask
& FSX_XFLAGS
) {
1170 * Can't change realtime flag if any extents are allocated.
1172 if ((ip
->i_d
.di_nextents
|| ip
->i_delayed_blks
) &&
1173 (XFS_IS_REALTIME_INODE(ip
)) !=
1174 (fa
->fsx_xflags
& XFS_XFLAG_REALTIME
)) {
1175 code
= XFS_ERROR(EINVAL
); /* EFBIG? */
1180 * If realtime flag is set then must have realtime data.
1182 if ((fa
->fsx_xflags
& XFS_XFLAG_REALTIME
)) {
1183 if ((mp
->m_sb
.sb_rblocks
== 0) ||
1184 (mp
->m_sb
.sb_rextsize
== 0) ||
1185 (ip
->i_d
.di_extsize
% mp
->m_sb
.sb_rextsize
)) {
1186 code
= XFS_ERROR(EINVAL
);
1192 * Can't modify an immutable/append-only file unless
1193 * we have appropriate permission.
1195 if ((ip
->i_d
.di_flags
&
1196 (XFS_DIFLAG_IMMUTABLE
|XFS_DIFLAG_APPEND
) ||
1198 (XFS_XFLAG_IMMUTABLE
| XFS_XFLAG_APPEND
))) &&
1199 !capable(CAP_LINUX_IMMUTABLE
)) {
1200 code
= XFS_ERROR(EPERM
);
1205 xfs_trans_ijoin(tp
, ip
, 0);
1208 * Change file ownership. Must be the owner or privileged.
1210 if (mask
& FSX_PROJID
) {
1212 * CAP_FSETID overrides the following restrictions:
1214 * The set-user-ID and set-group-ID bits of a file will be
1215 * cleared upon successful return from chown()
1217 if ((ip
->i_d
.di_mode
& (S_ISUID
|S_ISGID
)) &&
1218 !inode_capable(VFS_I(ip
), CAP_FSETID
))
1219 ip
->i_d
.di_mode
&= ~(S_ISUID
|S_ISGID
);
1222 * Change the ownerships and register quota modifications
1223 * in the transaction.
1225 if (xfs_get_projid(ip
) != fa
->fsx_projid
) {
1226 if (XFS_IS_QUOTA_RUNNING(mp
) && XFS_IS_PQUOTA_ON(mp
)) {
1227 olddquot
= xfs_qm_vop_chown(tp
, ip
,
1228 &ip
->i_pdquot
, pdqp
);
1230 xfs_set_projid(ip
, fa
->fsx_projid
);
1233 * We may have to rev the inode as well as
1234 * the superblock version number since projids didn't
1235 * exist before DINODE_VERSION_2 and SB_VERSION_NLINK.
1237 if (ip
->i_d
.di_version
== 1)
1238 xfs_bump_ino_vers2(tp
, ip
);
1243 if (mask
& FSX_EXTSIZE
)
1244 ip
->i_d
.di_extsize
= fa
->fsx_extsize
>> mp
->m_sb
.sb_blocklog
;
1245 if (mask
& FSX_XFLAGS
) {
1246 xfs_set_diflags(ip
, fa
->fsx_xflags
);
1247 xfs_diflags_to_linux(ip
);
1250 xfs_trans_ichgtime(tp
, ip
, XFS_ICHGTIME_CHG
);
1251 xfs_trans_log_inode(tp
, ip
, XFS_ILOG_CORE
);
1253 XFS_STATS_INC(xs_ig_attrchg
);
1256 * If this is a synchronous mount, make sure that the
1257 * transaction goes to disk before returning to the user.
1258 * This is slightly sub-optimal in that truncates require
1259 * two sync transactions instead of one for wsync filesystems.
1260 * One for the truncate and one for the timestamps since we
1261 * don't want to change the timestamps unless we're sure the
1262 * truncate worked. Truncates are less than 1% of the laddis
1263 * mix so this probably isn't worth the trouble to optimize.
1265 if (mp
->m_flags
& XFS_MOUNT_WSYNC
)
1266 xfs_trans_set_sync(tp
);
1267 code
= xfs_trans_commit(tp
, 0);
1268 xfs_iunlock(ip
, lock_flags
);
1271 * Release any dquot(s) the inode had kept before chown.
1273 xfs_qm_dqrele(olddquot
);
1274 xfs_qm_dqrele(udqp
);
1275 xfs_qm_dqrele(pdqp
);
1280 xfs_qm_dqrele(udqp
);
1281 xfs_qm_dqrele(pdqp
);
1282 xfs_trans_cancel(tp
, 0);
1284 xfs_iunlock(ip
, lock_flags
);
1298 if (copy_from_user(&fa
, arg
, sizeof(fa
)))
1301 mask
= FSX_XFLAGS
| FSX_EXTSIZE
| FSX_PROJID
;
1302 if (filp
->f_flags
& (O_NDELAY
|O_NONBLOCK
))
1303 mask
|= FSX_NONBLOCK
;
1305 error
= mnt_want_write_file(filp
);
1308 error
= xfs_ioctl_setattr(ip
, &fa
, mask
);
1309 mnt_drop_write_file(filp
);
1320 flags
= xfs_di2lxflags(ip
->i_d
.di_flags
);
1321 if (copy_to_user(arg
, &flags
, sizeof(flags
)))
1337 if (copy_from_user(&flags
, arg
, sizeof(flags
)))
1340 if (flags
& ~(FS_IMMUTABLE_FL
| FS_APPEND_FL
| \
1341 FS_NOATIME_FL
| FS_NODUMP_FL
| \
1346 if (filp
->f_flags
& (O_NDELAY
|O_NONBLOCK
))
1347 mask
|= FSX_NONBLOCK
;
1348 fa
.fsx_xflags
= xfs_merge_ioc_xflags(flags
, xfs_ip2xflags(ip
));
1350 error
= mnt_want_write_file(filp
);
1353 error
= xfs_ioctl_setattr(ip
, &fa
, mask
);
1354 mnt_drop_write_file(filp
);
1359 xfs_getbmap_format(void **ap
, struct getbmapx
*bmv
, int *full
)
1361 struct getbmap __user
*base
= *ap
;
1363 /* copy only getbmap portion (not getbmapx) */
1364 if (copy_to_user(base
, bmv
, sizeof(struct getbmap
)))
1365 return XFS_ERROR(EFAULT
);
1367 *ap
+= sizeof(struct getbmap
);
1373 struct xfs_inode
*ip
,
1378 struct getbmapx bmx
;
1381 if (copy_from_user(&bmx
, arg
, sizeof(struct getbmapx
)))
1382 return -XFS_ERROR(EFAULT
);
1384 if (bmx
.bmv_count
< 2)
1385 return -XFS_ERROR(EINVAL
);
1387 bmx
.bmv_iflags
= (cmd
== XFS_IOC_GETBMAPA
? BMV_IF_ATTRFORK
: 0);
1388 if (ioflags
& IO_INVIS
)
1389 bmx
.bmv_iflags
|= BMV_IF_NO_DMAPI_READ
;
1391 error
= xfs_getbmap(ip
, &bmx
, xfs_getbmap_format
,
1392 (struct getbmap
*)arg
+1);
1396 /* copy back header - only size of getbmap */
1397 if (copy_to_user(arg
, &bmx
, sizeof(struct getbmap
)))
1398 return -XFS_ERROR(EFAULT
);
1403 xfs_getbmapx_format(void **ap
, struct getbmapx
*bmv
, int *full
)
1405 struct getbmapx __user
*base
= *ap
;
1407 if (copy_to_user(base
, bmv
, sizeof(struct getbmapx
)))
1408 return XFS_ERROR(EFAULT
);
1410 *ap
+= sizeof(struct getbmapx
);
1416 struct xfs_inode
*ip
,
1419 struct getbmapx bmx
;
1422 if (copy_from_user(&bmx
, arg
, sizeof(bmx
)))
1423 return -XFS_ERROR(EFAULT
);
1425 if (bmx
.bmv_count
< 2)
1426 return -XFS_ERROR(EINVAL
);
1428 if (bmx
.bmv_iflags
& (~BMV_IF_VALID
))
1429 return -XFS_ERROR(EINVAL
);
1431 error
= xfs_getbmap(ip
, &bmx
, xfs_getbmapx_format
,
1432 (struct getbmapx
*)arg
+1);
1436 /* copy back header */
1437 if (copy_to_user(arg
, &bmx
, sizeof(struct getbmapx
)))
1438 return -XFS_ERROR(EFAULT
);
1447 xfs_inode_t
*ip
, *tip
;
1451 /* Pull information for the target fd */
1452 f
= fdget((int)sxp
->sx_fdtarget
);
1454 error
= XFS_ERROR(EINVAL
);
1458 if (!(f
.file
->f_mode
& FMODE_WRITE
) ||
1459 !(f
.file
->f_mode
& FMODE_READ
) ||
1460 (f
.file
->f_flags
& O_APPEND
)) {
1461 error
= XFS_ERROR(EBADF
);
1465 tmp
= fdget((int)sxp
->sx_fdtmp
);
1467 error
= XFS_ERROR(EINVAL
);
1471 if (!(tmp
.file
->f_mode
& FMODE_WRITE
) ||
1472 !(tmp
.file
->f_mode
& FMODE_READ
) ||
1473 (tmp
.file
->f_flags
& O_APPEND
)) {
1474 error
= XFS_ERROR(EBADF
);
1475 goto out_put_tmp_file
;
1478 if (IS_SWAPFILE(file_inode(f
.file
)) ||
1479 IS_SWAPFILE(file_inode(tmp
.file
))) {
1480 error
= XFS_ERROR(EINVAL
);
1481 goto out_put_tmp_file
;
1484 ip
= XFS_I(file_inode(f
.file
));
1485 tip
= XFS_I(file_inode(tmp
.file
));
1487 if (ip
->i_mount
!= tip
->i_mount
) {
1488 error
= XFS_ERROR(EINVAL
);
1489 goto out_put_tmp_file
;
1492 if (ip
->i_ino
== tip
->i_ino
) {
1493 error
= XFS_ERROR(EINVAL
);
1494 goto out_put_tmp_file
;
1497 if (XFS_FORCED_SHUTDOWN(ip
->i_mount
)) {
1498 error
= XFS_ERROR(EIO
);
1499 goto out_put_tmp_file
;
1502 error
= xfs_swap_extents(ip
, tip
, sxp
);
1513 * Note: some of the ioctl's return positive numbers as a
1514 * byte count indicating success, such as readlink_by_handle.
1515 * So we don't "sign flip" like most other routines. This means
1516 * true errors need to be returned as a negative value.
1524 struct inode
*inode
= file_inode(filp
);
1525 struct xfs_inode
*ip
= XFS_I(inode
);
1526 struct xfs_mount
*mp
= ip
->i_mount
;
1527 void __user
*arg
= (void __user
*)p
;
1531 if (filp
->f_mode
& FMODE_NOCMTIME
)
1532 ioflags
|= IO_INVIS
;
1534 trace_xfs_file_ioctl(ip
);
1538 return xfs_ioc_trim(mp
, arg
);
1539 case XFS_IOC_ALLOCSP
:
1540 case XFS_IOC_FREESP
:
1541 case XFS_IOC_RESVSP
:
1542 case XFS_IOC_UNRESVSP
:
1543 case XFS_IOC_ALLOCSP64
:
1544 case XFS_IOC_FREESP64
:
1545 case XFS_IOC_RESVSP64
:
1546 case XFS_IOC_UNRESVSP64
:
1547 case XFS_IOC_ZERO_RANGE
: {
1550 if (copy_from_user(&bf
, arg
, sizeof(bf
)))
1551 return -XFS_ERROR(EFAULT
);
1552 return xfs_ioc_space(ip
, inode
, filp
, ioflags
, cmd
, &bf
);
1554 case XFS_IOC_DIOINFO
: {
1556 xfs_buftarg_t
*target
=
1557 XFS_IS_REALTIME_INODE(ip
) ?
1558 mp
->m_rtdev_targp
: mp
->m_ddev_targp
;
1560 da
.d_mem
= da
.d_miniosz
= target
->bt_logical_sectorsize
;
1561 da
.d_maxiosz
= INT_MAX
& ~(da
.d_miniosz
- 1);
1563 if (copy_to_user(arg
, &da
, sizeof(da
)))
1564 return -XFS_ERROR(EFAULT
);
1568 case XFS_IOC_FSBULKSTAT_SINGLE
:
1569 case XFS_IOC_FSBULKSTAT
:
1570 case XFS_IOC_FSINUMBERS
:
1571 return xfs_ioc_bulkstat(mp
, cmd
, arg
);
1573 case XFS_IOC_FSGEOMETRY_V1
:
1574 return xfs_ioc_fsgeometry_v1(mp
, arg
);
1576 case XFS_IOC_FSGEOMETRY
:
1577 return xfs_ioc_fsgeometry(mp
, arg
);
1579 case XFS_IOC_GETVERSION
:
1580 return put_user(inode
->i_generation
, (int __user
*)arg
);
1582 case XFS_IOC_FSGETXATTR
:
1583 return xfs_ioc_fsgetxattr(ip
, 0, arg
);
1584 case XFS_IOC_FSGETXATTRA
:
1585 return xfs_ioc_fsgetxattr(ip
, 1, arg
);
1586 case XFS_IOC_FSSETXATTR
:
1587 return xfs_ioc_fssetxattr(ip
, filp
, arg
);
1588 case XFS_IOC_GETXFLAGS
:
1589 return xfs_ioc_getxflags(ip
, arg
);
1590 case XFS_IOC_SETXFLAGS
:
1591 return xfs_ioc_setxflags(ip
, filp
, arg
);
1593 case XFS_IOC_FSSETDM
: {
1594 struct fsdmidata dmi
;
1596 if (copy_from_user(&dmi
, arg
, sizeof(dmi
)))
1597 return -XFS_ERROR(EFAULT
);
1599 error
= mnt_want_write_file(filp
);
1603 error
= xfs_set_dmattrs(ip
, dmi
.fsd_dmevmask
,
1605 mnt_drop_write_file(filp
);
1609 case XFS_IOC_GETBMAP
:
1610 case XFS_IOC_GETBMAPA
:
1611 return xfs_ioc_getbmap(ip
, ioflags
, cmd
, arg
);
1613 case XFS_IOC_GETBMAPX
:
1614 return xfs_ioc_getbmapx(ip
, arg
);
1616 case XFS_IOC_FD_TO_HANDLE
:
1617 case XFS_IOC_PATH_TO_HANDLE
:
1618 case XFS_IOC_PATH_TO_FSHANDLE
: {
1619 xfs_fsop_handlereq_t hreq
;
1621 if (copy_from_user(&hreq
, arg
, sizeof(hreq
)))
1622 return -XFS_ERROR(EFAULT
);
1623 return xfs_find_handle(cmd
, &hreq
);
1625 case XFS_IOC_OPEN_BY_HANDLE
: {
1626 xfs_fsop_handlereq_t hreq
;
1628 if (copy_from_user(&hreq
, arg
, sizeof(xfs_fsop_handlereq_t
)))
1629 return -XFS_ERROR(EFAULT
);
1630 return xfs_open_by_handle(filp
, &hreq
);
1632 case XFS_IOC_FSSETDM_BY_HANDLE
:
1633 return xfs_fssetdm_by_handle(filp
, arg
);
1635 case XFS_IOC_READLINK_BY_HANDLE
: {
1636 xfs_fsop_handlereq_t hreq
;
1638 if (copy_from_user(&hreq
, arg
, sizeof(xfs_fsop_handlereq_t
)))
1639 return -XFS_ERROR(EFAULT
);
1640 return xfs_readlink_by_handle(filp
, &hreq
);
1642 case XFS_IOC_ATTRLIST_BY_HANDLE
:
1643 return xfs_attrlist_by_handle(filp
, arg
);
1645 case XFS_IOC_ATTRMULTI_BY_HANDLE
:
1646 return xfs_attrmulti_by_handle(filp
, arg
);
1648 case XFS_IOC_SWAPEXT
: {
1649 struct xfs_swapext sxp
;
1651 if (copy_from_user(&sxp
, arg
, sizeof(xfs_swapext_t
)))
1652 return -XFS_ERROR(EFAULT
);
1653 error
= mnt_want_write_file(filp
);
1656 error
= xfs_ioc_swapext(&sxp
);
1657 mnt_drop_write_file(filp
);
1661 case XFS_IOC_FSCOUNTS
: {
1662 xfs_fsop_counts_t out
;
1664 error
= xfs_fs_counts(mp
, &out
);
1668 if (copy_to_user(arg
, &out
, sizeof(out
)))
1669 return -XFS_ERROR(EFAULT
);
1673 case XFS_IOC_SET_RESBLKS
: {
1674 xfs_fsop_resblks_t inout
;
1677 if (!capable(CAP_SYS_ADMIN
))
1680 if (mp
->m_flags
& XFS_MOUNT_RDONLY
)
1681 return -XFS_ERROR(EROFS
);
1683 if (copy_from_user(&inout
, arg
, sizeof(inout
)))
1684 return -XFS_ERROR(EFAULT
);
1686 error
= mnt_want_write_file(filp
);
1690 /* input parameter is passed in resblks field of structure */
1692 error
= xfs_reserve_blocks(mp
, &in
, &inout
);
1693 mnt_drop_write_file(filp
);
1697 if (copy_to_user(arg
, &inout
, sizeof(inout
)))
1698 return -XFS_ERROR(EFAULT
);
1702 case XFS_IOC_GET_RESBLKS
: {
1703 xfs_fsop_resblks_t out
;
1705 if (!capable(CAP_SYS_ADMIN
))
1708 error
= xfs_reserve_blocks(mp
, NULL
, &out
);
1712 if (copy_to_user(arg
, &out
, sizeof(out
)))
1713 return -XFS_ERROR(EFAULT
);
1718 case XFS_IOC_FSGROWFSDATA
: {
1719 xfs_growfs_data_t in
;
1721 if (copy_from_user(&in
, arg
, sizeof(in
)))
1722 return -XFS_ERROR(EFAULT
);
1724 error
= mnt_want_write_file(filp
);
1727 error
= xfs_growfs_data(mp
, &in
);
1728 mnt_drop_write_file(filp
);
1732 case XFS_IOC_FSGROWFSLOG
: {
1733 xfs_growfs_log_t in
;
1735 if (copy_from_user(&in
, arg
, sizeof(in
)))
1736 return -XFS_ERROR(EFAULT
);
1738 error
= mnt_want_write_file(filp
);
1741 error
= xfs_growfs_log(mp
, &in
);
1742 mnt_drop_write_file(filp
);
1746 case XFS_IOC_FSGROWFSRT
: {
1749 if (copy_from_user(&in
, arg
, sizeof(in
)))
1750 return -XFS_ERROR(EFAULT
);
1752 error
= mnt_want_write_file(filp
);
1755 error
= xfs_growfs_rt(mp
, &in
);
1756 mnt_drop_write_file(filp
);
1760 case XFS_IOC_GOINGDOWN
: {
1763 if (!capable(CAP_SYS_ADMIN
))
1766 if (get_user(in
, (__uint32_t __user
*)arg
))
1767 return -XFS_ERROR(EFAULT
);
1769 error
= xfs_fs_goingdown(mp
, in
);
1773 case XFS_IOC_ERROR_INJECTION
: {
1774 xfs_error_injection_t in
;
1776 if (!capable(CAP_SYS_ADMIN
))
1779 if (copy_from_user(&in
, arg
, sizeof(in
)))
1780 return -XFS_ERROR(EFAULT
);
1782 error
= xfs_errortag_add(in
.errtag
, mp
);
1786 case XFS_IOC_ERROR_CLEARALL
:
1787 if (!capable(CAP_SYS_ADMIN
))
1790 error
= xfs_errortag_clearall(mp
, 1);
1793 case XFS_IOC_FREE_EOFBLOCKS
: {
1794 struct xfs_fs_eofblocks eofb
;
1795 struct xfs_eofblocks keofb
;
1797 if (!capable(CAP_SYS_ADMIN
))
1800 if (mp
->m_flags
& XFS_MOUNT_RDONLY
)
1801 return -XFS_ERROR(EROFS
);
1803 if (copy_from_user(&eofb
, arg
, sizeof(eofb
)))
1804 return -XFS_ERROR(EFAULT
);
1806 error
= xfs_fs_eofblocks_from_user(&eofb
, &keofb
);
1810 return -xfs_icache_free_eofblocks(mp
, &keofb
);