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"
44 #include "xfs_btree.h"
45 #include <linux/fsmap.h>
46 #include "xfs_fsmap.h"
48 #include <linux/capability.h>
49 #include <linux/cred.h>
50 #include <linux/dcache.h>
51 #include <linux/mount.h>
52 #include <linux/namei.h>
53 #include <linux/pagemap.h>
54 #include <linux/slab.h>
55 #include <linux/exportfs.h>
58 * xfs_find_handle maps from userspace xfs_fsop_handlereq structure to
59 * a file or fs handle.
61 * XFS_IOC_PATH_TO_FSHANDLE
62 * returns fs handle for a mount point or path within that mount point
63 * XFS_IOC_FD_TO_HANDLE
64 * returns full handle for a FD opened in user space
65 * XFS_IOC_PATH_TO_HANDLE
66 * returns full handle for a path
71 xfs_fsop_handlereq_t
*hreq
)
81 if (cmd
== XFS_IOC_FD_TO_HANDLE
) {
85 inode
= file_inode(f
.file
);
87 error
= user_lpath((const char __user
*)hreq
->path
, &path
);
90 inode
= d_inode(path
.dentry
);
95 * We can only generate handles for inodes residing on a XFS filesystem,
96 * and only for regular files, directories or symbolic links.
99 if (inode
->i_sb
->s_magic
!= XFS_SB_MAGIC
)
103 if (!S_ISREG(inode
->i_mode
) &&
104 !S_ISDIR(inode
->i_mode
) &&
105 !S_ISLNK(inode
->i_mode
))
109 memcpy(&handle
.ha_fsid
, ip
->i_mount
->m_fixedfsid
, sizeof(xfs_fsid_t
));
111 if (cmd
== XFS_IOC_PATH_TO_FSHANDLE
) {
113 * This handle only contains an fsid, zero the rest.
115 memset(&handle
.ha_fid
, 0, sizeof(handle
.ha_fid
));
116 hsize
= sizeof(xfs_fsid_t
);
118 handle
.ha_fid
.fid_len
= sizeof(xfs_fid_t
) -
119 sizeof(handle
.ha_fid
.fid_len
);
120 handle
.ha_fid
.fid_pad
= 0;
121 handle
.ha_fid
.fid_gen
= inode
->i_generation
;
122 handle
.ha_fid
.fid_ino
= ip
->i_ino
;
123 hsize
= sizeof(xfs_handle_t
);
127 if (copy_to_user(hreq
->ohandle
, &handle
, hsize
) ||
128 copy_to_user(hreq
->ohandlen
, &hsize
, sizeof(__s32
)))
134 if (cmd
== XFS_IOC_FD_TO_HANDLE
)
142 * No need to do permission checks on the various pathname components
143 * as the handle operations are privileged.
146 xfs_handle_acceptable(
148 struct dentry
*dentry
)
154 * Convert userspace handle data into a dentry.
157 xfs_handle_to_dentry(
158 struct file
*parfilp
,
159 void __user
*uhandle
,
163 struct xfs_fid64 fid
;
166 * Only allow handle opens under a directory.
168 if (!S_ISDIR(file_inode(parfilp
)->i_mode
))
169 return ERR_PTR(-ENOTDIR
);
171 if (hlen
!= sizeof(xfs_handle_t
))
172 return ERR_PTR(-EINVAL
);
173 if (copy_from_user(&handle
, uhandle
, hlen
))
174 return ERR_PTR(-EFAULT
);
175 if (handle
.ha_fid
.fid_len
!=
176 sizeof(handle
.ha_fid
) - sizeof(handle
.ha_fid
.fid_len
))
177 return ERR_PTR(-EINVAL
);
179 memset(&fid
, 0, sizeof(struct fid
));
180 fid
.ino
= handle
.ha_fid
.fid_ino
;
181 fid
.gen
= handle
.ha_fid
.fid_gen
;
183 return exportfs_decode_fh(parfilp
->f_path
.mnt
, (struct fid
*)&fid
, 3,
184 FILEID_INO32_GEN
| XFS_FILEID_TYPE_64FLAG
,
185 xfs_handle_acceptable
, NULL
);
188 STATIC
struct dentry
*
189 xfs_handlereq_to_dentry(
190 struct file
*parfilp
,
191 xfs_fsop_handlereq_t
*hreq
)
193 return xfs_handle_to_dentry(parfilp
, hreq
->ihandle
, hreq
->ihandlen
);
198 struct file
*parfilp
,
199 xfs_fsop_handlereq_t
*hreq
)
201 const struct cred
*cred
= current_cred();
207 struct dentry
*dentry
;
211 if (!capable(CAP_SYS_ADMIN
))
214 dentry
= xfs_handlereq_to_dentry(parfilp
, hreq
);
216 return PTR_ERR(dentry
);
217 inode
= d_inode(dentry
);
219 /* Restrict xfs_open_by_handle to directories & regular files. */
220 if (!(S_ISREG(inode
->i_mode
) || S_ISDIR(inode
->i_mode
))) {
225 #if BITS_PER_LONG != 32
226 hreq
->oflags
|= O_LARGEFILE
;
229 permflag
= hreq
->oflags
;
230 fmode
= OPEN_FMODE(permflag
);
231 if ((!(permflag
& O_APPEND
) || (permflag
& O_TRUNC
)) &&
232 (fmode
& FMODE_WRITE
) && IS_APPEND(inode
)) {
237 if ((fmode
& FMODE_WRITE
) && IS_IMMUTABLE(inode
)) {
242 /* Can't write directories. */
243 if (S_ISDIR(inode
->i_mode
) && (fmode
& FMODE_WRITE
)) {
248 fd
= get_unused_fd_flags(0);
254 path
.mnt
= parfilp
->f_path
.mnt
;
255 path
.dentry
= dentry
;
256 filp
= dentry_open(&path
, hreq
->oflags
, cred
);
260 return PTR_ERR(filp
);
263 if (S_ISREG(inode
->i_mode
)) {
264 filp
->f_flags
|= O_NOATIME
;
265 filp
->f_mode
|= FMODE_NOCMTIME
;
268 fd_install(fd
, filp
);
277 xfs_readlink_by_handle(
278 struct file
*parfilp
,
279 xfs_fsop_handlereq_t
*hreq
)
281 struct dentry
*dentry
;
285 if (!capable(CAP_SYS_ADMIN
))
288 dentry
= xfs_handlereq_to_dentry(parfilp
, hreq
);
290 return PTR_ERR(dentry
);
292 /* Restrict this handle operation to symlinks only. */
293 if (!d_is_symlink(dentry
)) {
298 if (copy_from_user(&olen
, hreq
->ohandlen
, sizeof(__u32
))) {
303 error
= vfs_readlink(dentry
, hreq
->ohandle
, olen
);
316 xfs_mount_t
*mp
= ip
->i_mount
;
320 if (!capable(CAP_SYS_ADMIN
))
323 if (XFS_FORCED_SHUTDOWN(mp
))
326 error
= xfs_trans_alloc(mp
, &M_RES(mp
)->tr_ichange
, 0, 0, 0, &tp
);
330 xfs_ilock(ip
, XFS_ILOCK_EXCL
);
331 xfs_trans_ijoin(tp
, ip
, XFS_ILOCK_EXCL
);
333 ip
->i_d
.di_dmevmask
= evmask
;
334 ip
->i_d
.di_dmstate
= state
;
336 xfs_trans_log_inode(tp
, ip
, XFS_ILOG_CORE
);
337 error
= xfs_trans_commit(tp
);
343 xfs_fssetdm_by_handle(
344 struct file
*parfilp
,
348 struct fsdmidata fsd
;
349 xfs_fsop_setdm_handlereq_t dmhreq
;
350 struct dentry
*dentry
;
352 if (!capable(CAP_MKNOD
))
354 if (copy_from_user(&dmhreq
, arg
, sizeof(xfs_fsop_setdm_handlereq_t
)))
357 error
= mnt_want_write_file(parfilp
);
361 dentry
= xfs_handlereq_to_dentry(parfilp
, &dmhreq
.hreq
);
362 if (IS_ERR(dentry
)) {
363 mnt_drop_write_file(parfilp
);
364 return PTR_ERR(dentry
);
367 if (IS_IMMUTABLE(d_inode(dentry
)) || IS_APPEND(d_inode(dentry
))) {
372 if (copy_from_user(&fsd
, dmhreq
.data
, sizeof(fsd
))) {
377 error
= xfs_set_dmattrs(XFS_I(d_inode(dentry
)), fsd
.fsd_dmevmask
,
381 mnt_drop_write_file(parfilp
);
387 xfs_attrlist_by_handle(
388 struct file
*parfilp
,
392 attrlist_cursor_kern_t
*cursor
;
393 struct xfs_fsop_attrlist_handlereq __user
*p
= arg
;
394 xfs_fsop_attrlist_handlereq_t al_hreq
;
395 struct dentry
*dentry
;
398 if (!capable(CAP_SYS_ADMIN
))
400 if (copy_from_user(&al_hreq
, arg
, sizeof(xfs_fsop_attrlist_handlereq_t
)))
402 if (al_hreq
.buflen
< sizeof(struct attrlist
) ||
403 al_hreq
.buflen
> XFS_XATTR_LIST_MAX
)
407 * Reject flags, only allow namespaces.
409 if (al_hreq
.flags
& ~(ATTR_ROOT
| ATTR_SECURE
))
412 dentry
= xfs_handlereq_to_dentry(parfilp
, &al_hreq
.hreq
);
414 return PTR_ERR(dentry
);
416 kbuf
= kmem_zalloc_large(al_hreq
.buflen
, KM_SLEEP
);
420 cursor
= (attrlist_cursor_kern_t
*)&al_hreq
.pos
;
421 error
= xfs_attr_list(XFS_I(d_inode(dentry
)), kbuf
, al_hreq
.buflen
,
422 al_hreq
.flags
, cursor
);
426 if (copy_to_user(&p
->pos
, cursor
, sizeof(attrlist_cursor_kern_t
))) {
431 if (copy_to_user(al_hreq
.buffer
, kbuf
, al_hreq
.buflen
))
442 xfs_attrmulti_attr_get(
445 unsigned char __user
*ubuf
,
452 if (*len
> XFS_XATTR_SIZE_MAX
)
454 kbuf
= kmem_zalloc_large(*len
, KM_SLEEP
);
458 error
= xfs_attr_get(XFS_I(inode
), name
, kbuf
, (int *)len
, flags
);
462 if (copy_to_user(ubuf
, kbuf
, *len
))
471 xfs_attrmulti_attr_set(
474 const unsigned char __user
*ubuf
,
481 if (IS_IMMUTABLE(inode
) || IS_APPEND(inode
))
483 if (len
> XFS_XATTR_SIZE_MAX
)
486 kbuf
= memdup_user(ubuf
, len
);
488 return PTR_ERR(kbuf
);
490 error
= xfs_attr_set(XFS_I(inode
), name
, kbuf
, len
, flags
);
492 xfs_forget_acl(inode
, name
, flags
);
498 xfs_attrmulti_attr_remove(
505 if (IS_IMMUTABLE(inode
) || IS_APPEND(inode
))
507 error
= xfs_attr_remove(XFS_I(inode
), name
, flags
);
509 xfs_forget_acl(inode
, name
, flags
);
514 xfs_attrmulti_by_handle(
515 struct file
*parfilp
,
519 xfs_attr_multiop_t
*ops
;
520 xfs_fsop_attrmulti_handlereq_t am_hreq
;
521 struct dentry
*dentry
;
522 unsigned int i
, size
;
523 unsigned char *attr_name
;
525 if (!capable(CAP_SYS_ADMIN
))
527 if (copy_from_user(&am_hreq
, arg
, sizeof(xfs_fsop_attrmulti_handlereq_t
)))
531 if (am_hreq
.opcount
>= INT_MAX
/ sizeof(xfs_attr_multiop_t
))
534 dentry
= xfs_handlereq_to_dentry(parfilp
, &am_hreq
.hreq
);
536 return PTR_ERR(dentry
);
539 size
= am_hreq
.opcount
* sizeof(xfs_attr_multiop_t
);
540 if (!size
|| size
> 16 * PAGE_SIZE
)
543 ops
= memdup_user(am_hreq
.ops
, size
);
545 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 d_inode(dentry
), 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 d_inode(dentry
), 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 d_inode(dentry
), attr_name
,
587 mnt_drop_write_file(parfilp
);
590 ops
[i
].am_error
= -EINVAL
;
594 if (copy_to_user(am_hreq
.ops
, ops
, size
))
611 struct inode
*inode
= file_inode(filp
);
612 struct xfs_inode
*ip
= XFS_I(inode
);
614 enum xfs_prealloc_flags flags
= 0;
615 uint iolock
= XFS_IOLOCK_EXCL
;
619 * Only allow the sys admin to reserve space unless
620 * unwritten extents are enabled.
622 if (!xfs_sb_version_hasextflgbit(&ip
->i_mount
->m_sb
) &&
623 !capable(CAP_SYS_ADMIN
))
626 if (inode
->i_flags
& (S_IMMUTABLE
|S_APPEND
))
629 if (!(filp
->f_mode
& FMODE_WRITE
))
632 if (!S_ISREG(inode
->i_mode
))
635 if (filp
->f_flags
& O_DSYNC
)
636 flags
|= XFS_PREALLOC_SYNC
;
637 if (filp
->f_mode
& FMODE_NOCMTIME
)
638 flags
|= XFS_PREALLOC_INVISIBLE
;
640 error
= mnt_want_write_file(filp
);
644 xfs_ilock(ip
, iolock
);
645 error
= xfs_break_layouts(inode
, &iolock
);
649 xfs_ilock(ip
, XFS_MMAPLOCK_EXCL
);
650 iolock
|= XFS_MMAPLOCK_EXCL
;
652 switch (bf
->l_whence
) {
656 bf
->l_start
+= filp
->f_pos
;
659 bf
->l_start
+= XFS_ISIZE(ip
);
667 * length of <= 0 for resv/unresv/zero is invalid. length for
668 * alloc/free is ignored completely and we have no idea what userspace
669 * might have set it to, so set it to zero to allow range
673 case XFS_IOC_ZERO_RANGE
:
675 case XFS_IOC_RESVSP64
:
676 case XFS_IOC_UNRESVSP
:
677 case XFS_IOC_UNRESVSP64
:
678 if (bf
->l_len
<= 0) {
688 if (bf
->l_start
< 0 ||
689 bf
->l_start
> inode
->i_sb
->s_maxbytes
||
690 bf
->l_start
+ bf
->l_len
< 0 ||
691 bf
->l_start
+ bf
->l_len
>= inode
->i_sb
->s_maxbytes
) {
697 case XFS_IOC_ZERO_RANGE
:
698 flags
|= XFS_PREALLOC_SET
;
699 error
= xfs_zero_file_space(ip
, bf
->l_start
, bf
->l_len
);
702 case XFS_IOC_RESVSP64
:
703 flags
|= XFS_PREALLOC_SET
;
704 error
= xfs_alloc_file_space(ip
, bf
->l_start
, bf
->l_len
,
707 case XFS_IOC_UNRESVSP
:
708 case XFS_IOC_UNRESVSP64
:
709 error
= xfs_free_file_space(ip
, bf
->l_start
, bf
->l_len
);
711 case XFS_IOC_ALLOCSP
:
712 case XFS_IOC_ALLOCSP64
:
714 case XFS_IOC_FREESP64
:
715 flags
|= XFS_PREALLOC_CLEAR
;
716 if (bf
->l_start
> XFS_ISIZE(ip
)) {
717 error
= xfs_alloc_file_space(ip
, XFS_ISIZE(ip
),
718 bf
->l_start
- XFS_ISIZE(ip
), 0);
723 iattr
.ia_valid
= ATTR_SIZE
;
724 iattr
.ia_size
= bf
->l_start
;
726 error
= xfs_vn_setattr_size(file_dentry(filp
), &iattr
);
736 error
= xfs_update_prealloc_flags(ip
, flags
);
739 xfs_iunlock(ip
, iolock
);
740 mnt_drop_write_file(filp
);
750 xfs_fsop_bulkreq_t bulkreq
;
751 int count
; /* # of records returned */
752 xfs_ino_t inlast
; /* last inode number */
756 /* done = 1 if there are more stats to get and if bulkstat */
757 /* should be called again (unused here, but used in dmapi) */
759 if (!capable(CAP_SYS_ADMIN
))
762 if (XFS_FORCED_SHUTDOWN(mp
))
765 if (copy_from_user(&bulkreq
, arg
, sizeof(xfs_fsop_bulkreq_t
)))
768 if (copy_from_user(&inlast
, bulkreq
.lastip
, sizeof(__s64
)))
771 if ((count
= bulkreq
.icount
) <= 0)
774 if (bulkreq
.ubuffer
== NULL
)
777 if (cmd
== XFS_IOC_FSINUMBERS
)
778 error
= xfs_inumbers(mp
, &inlast
, &count
,
779 bulkreq
.ubuffer
, xfs_inumbers_fmt
);
780 else if (cmd
== XFS_IOC_FSBULKSTAT_SINGLE
)
781 error
= xfs_bulkstat_one(mp
, inlast
, bulkreq
.ubuffer
,
782 sizeof(xfs_bstat_t
), NULL
, &done
);
783 else /* XFS_IOC_FSBULKSTAT */
784 error
= xfs_bulkstat(mp
, &inlast
, &count
, xfs_bulkstat_one
,
785 sizeof(xfs_bstat_t
), bulkreq
.ubuffer
,
791 if (bulkreq
.ocount
!= NULL
) {
792 if (copy_to_user(bulkreq
.lastip
, &inlast
,
796 if (copy_to_user(bulkreq
.ocount
, &count
, sizeof(count
)))
804 xfs_ioc_fsgeometry_v1(
808 xfs_fsop_geom_t fsgeo
;
811 error
= xfs_fs_geometry(mp
, &fsgeo
, 3);
816 * Caller should have passed an argument of type
817 * xfs_fsop_geom_v1_t. This is a proper subset of the
818 * xfs_fsop_geom_t that xfs_fs_geometry() fills in.
820 if (copy_to_user(arg
, &fsgeo
, sizeof(xfs_fsop_geom_v1_t
)))
830 xfs_fsop_geom_t fsgeo
;
833 error
= xfs_fs_geometry(mp
, &fsgeo
, 4);
837 if (copy_to_user(arg
, &fsgeo
, sizeof(fsgeo
)))
843 * Linux extended inode flags interface.
847 xfs_merge_ioc_xflags(
851 unsigned int xflags
= start
;
853 if (flags
& FS_IMMUTABLE_FL
)
854 xflags
|= FS_XFLAG_IMMUTABLE
;
856 xflags
&= ~FS_XFLAG_IMMUTABLE
;
857 if (flags
& FS_APPEND_FL
)
858 xflags
|= FS_XFLAG_APPEND
;
860 xflags
&= ~FS_XFLAG_APPEND
;
861 if (flags
& FS_SYNC_FL
)
862 xflags
|= FS_XFLAG_SYNC
;
864 xflags
&= ~FS_XFLAG_SYNC
;
865 if (flags
& FS_NOATIME_FL
)
866 xflags
|= FS_XFLAG_NOATIME
;
868 xflags
&= ~FS_XFLAG_NOATIME
;
869 if (flags
& FS_NODUMP_FL
)
870 xflags
|= FS_XFLAG_NODUMP
;
872 xflags
&= ~FS_XFLAG_NODUMP
;
881 unsigned int flags
= 0;
883 if (di_flags
& XFS_DIFLAG_IMMUTABLE
)
884 flags
|= FS_IMMUTABLE_FL
;
885 if (di_flags
& XFS_DIFLAG_APPEND
)
886 flags
|= FS_APPEND_FL
;
887 if (di_flags
& XFS_DIFLAG_SYNC
)
889 if (di_flags
& XFS_DIFLAG_NOATIME
)
890 flags
|= FS_NOATIME_FL
;
891 if (di_flags
& XFS_DIFLAG_NODUMP
)
892 flags
|= FS_NODUMP_FL
;
904 memset(&fa
, 0, sizeof(struct fsxattr
));
906 xfs_ilock(ip
, XFS_ILOCK_SHARED
);
907 fa
.fsx_xflags
= xfs_ip2xflags(ip
);
908 fa
.fsx_extsize
= ip
->i_d
.di_extsize
<< ip
->i_mount
->m_sb
.sb_blocklog
;
909 fa
.fsx_cowextsize
= ip
->i_d
.di_cowextsize
<<
910 ip
->i_mount
->m_sb
.sb_blocklog
;
911 fa
.fsx_projid
= xfs_get_projid(ip
);
915 if (ip
->i_afp
->if_flags
& XFS_IFEXTENTS
)
916 fa
.fsx_nextents
= xfs_iext_count(ip
->i_afp
);
918 fa
.fsx_nextents
= ip
->i_d
.di_anextents
;
922 if (ip
->i_df
.if_flags
& XFS_IFEXTENTS
)
923 fa
.fsx_nextents
= xfs_iext_count(&ip
->i_df
);
925 fa
.fsx_nextents
= ip
->i_d
.di_nextents
;
927 xfs_iunlock(ip
, XFS_ILOCK_SHARED
);
929 if (copy_to_user(arg
, &fa
, sizeof(fa
)))
936 struct xfs_inode
*ip
,
939 /* can't set PREALLOC this way, just preserve it */
941 (ip
->i_d
.di_flags
& XFS_DIFLAG_PREALLOC
);
943 if (xflags
& FS_XFLAG_IMMUTABLE
)
944 di_flags
|= XFS_DIFLAG_IMMUTABLE
;
945 if (xflags
& FS_XFLAG_APPEND
)
946 di_flags
|= XFS_DIFLAG_APPEND
;
947 if (xflags
& FS_XFLAG_SYNC
)
948 di_flags
|= XFS_DIFLAG_SYNC
;
949 if (xflags
& FS_XFLAG_NOATIME
)
950 di_flags
|= XFS_DIFLAG_NOATIME
;
951 if (xflags
& FS_XFLAG_NODUMP
)
952 di_flags
|= XFS_DIFLAG_NODUMP
;
953 if (xflags
& FS_XFLAG_NODEFRAG
)
954 di_flags
|= XFS_DIFLAG_NODEFRAG
;
955 if (xflags
& FS_XFLAG_FILESTREAM
)
956 di_flags
|= XFS_DIFLAG_FILESTREAM
;
957 if (S_ISDIR(VFS_I(ip
)->i_mode
)) {
958 if (xflags
& FS_XFLAG_RTINHERIT
)
959 di_flags
|= XFS_DIFLAG_RTINHERIT
;
960 if (xflags
& FS_XFLAG_NOSYMLINKS
)
961 di_flags
|= XFS_DIFLAG_NOSYMLINKS
;
962 if (xflags
& FS_XFLAG_EXTSZINHERIT
)
963 di_flags
|= XFS_DIFLAG_EXTSZINHERIT
;
964 if (xflags
& FS_XFLAG_PROJINHERIT
)
965 di_flags
|= XFS_DIFLAG_PROJINHERIT
;
966 } else if (S_ISREG(VFS_I(ip
)->i_mode
)) {
967 if (xflags
& FS_XFLAG_REALTIME
)
968 di_flags
|= XFS_DIFLAG_REALTIME
;
969 if (xflags
& FS_XFLAG_EXTSIZE
)
970 di_flags
|= XFS_DIFLAG_EXTSIZE
;
978 struct xfs_inode
*ip
,
982 (ip
->i_d
.di_flags2
& XFS_DIFLAG2_REFLINK
);
984 if (xflags
& FS_XFLAG_DAX
)
985 di_flags2
|= XFS_DIFLAG2_DAX
;
986 if (xflags
& FS_XFLAG_COWEXTSIZE
)
987 di_flags2
|= XFS_DIFLAG2_COWEXTSIZE
;
993 xfs_diflags_to_linux(
994 struct xfs_inode
*ip
)
996 struct inode
*inode
= VFS_I(ip
);
997 unsigned int xflags
= xfs_ip2xflags(ip
);
999 if (xflags
& FS_XFLAG_IMMUTABLE
)
1000 inode
->i_flags
|= S_IMMUTABLE
;
1002 inode
->i_flags
&= ~S_IMMUTABLE
;
1003 if (xflags
& FS_XFLAG_APPEND
)
1004 inode
->i_flags
|= S_APPEND
;
1006 inode
->i_flags
&= ~S_APPEND
;
1007 if (xflags
& FS_XFLAG_SYNC
)
1008 inode
->i_flags
|= S_SYNC
;
1010 inode
->i_flags
&= ~S_SYNC
;
1011 if (xflags
& FS_XFLAG_NOATIME
)
1012 inode
->i_flags
|= S_NOATIME
;
1014 inode
->i_flags
&= ~S_NOATIME
;
1015 #if 0 /* disabled until the flag switching races are sorted out */
1016 if (xflags
& FS_XFLAG_DAX
)
1017 inode
->i_flags
|= S_DAX
;
1019 inode
->i_flags
&= ~S_DAX
;
1024 xfs_ioctl_setattr_xflags(
1025 struct xfs_trans
*tp
,
1026 struct xfs_inode
*ip
,
1029 struct xfs_mount
*mp
= ip
->i_mount
;
1032 /* Can't change realtime flag if any extents are allocated. */
1033 if ((ip
->i_d
.di_nextents
|| ip
->i_delayed_blks
) &&
1034 XFS_IS_REALTIME_INODE(ip
) != (fa
->fsx_xflags
& FS_XFLAG_REALTIME
))
1037 /* If realtime flag is set then must have realtime device */
1038 if (fa
->fsx_xflags
& FS_XFLAG_REALTIME
) {
1039 if (mp
->m_sb
.sb_rblocks
== 0 || mp
->m_sb
.sb_rextsize
== 0 ||
1040 (ip
->i_d
.di_extsize
% mp
->m_sb
.sb_rextsize
))
1044 /* Clear reflink if we are actually able to set the rt flag. */
1045 if ((fa
->fsx_xflags
& FS_XFLAG_REALTIME
) && xfs_is_reflink_inode(ip
))
1046 ip
->i_d
.di_flags2
&= ~XFS_DIFLAG2_REFLINK
;
1048 /* Don't allow us to set DAX mode for a reflinked file for now. */
1049 if ((fa
->fsx_xflags
& FS_XFLAG_DAX
) && xfs_is_reflink_inode(ip
))
1053 * Can't modify an immutable/append-only file unless
1054 * we have appropriate permission.
1056 if (((ip
->i_d
.di_flags
& (XFS_DIFLAG_IMMUTABLE
| XFS_DIFLAG_APPEND
)) ||
1057 (fa
->fsx_xflags
& (FS_XFLAG_IMMUTABLE
| FS_XFLAG_APPEND
))) &&
1058 !capable(CAP_LINUX_IMMUTABLE
))
1061 /* diflags2 only valid for v3 inodes. */
1062 di_flags2
= xfs_flags2diflags2(ip
, fa
->fsx_xflags
);
1063 if (di_flags2
&& ip
->i_d
.di_version
< 3)
1066 ip
->i_d
.di_flags
= xfs_flags2diflags(ip
, fa
->fsx_xflags
);
1067 ip
->i_d
.di_flags2
= di_flags2
;
1069 xfs_diflags_to_linux(ip
);
1070 xfs_trans_ichgtime(tp
, ip
, XFS_ICHGTIME_CHG
);
1071 xfs_trans_log_inode(tp
, ip
, XFS_ILOG_CORE
);
1072 XFS_STATS_INC(mp
, xs_ig_attrchg
);
1077 * If we are changing DAX flags, we have to ensure the file is clean and any
1078 * cached objects in the address space are invalidated and removed. This
1079 * requires us to lock out other IO and page faults similar to a truncate
1080 * operation. The locks need to be held until the transaction has been committed
1081 * so that the cache invalidation is atomic with respect to the DAX flag
1085 xfs_ioctl_setattr_dax_invalidate(
1086 struct xfs_inode
*ip
,
1090 struct inode
*inode
= VFS_I(ip
);
1091 struct super_block
*sb
= inode
->i_sb
;
1097 * It is only valid to set the DAX flag on regular files and
1098 * directories on filesystems where the block size is equal to the page
1099 * size. On directories it serves as an inherit hint.
1101 if (fa
->fsx_xflags
& FS_XFLAG_DAX
) {
1102 if (!(S_ISREG(inode
->i_mode
) || S_ISDIR(inode
->i_mode
)))
1104 if (bdev_dax_supported(sb
, sb
->s_blocksize
) < 0)
1108 /* If the DAX state is not changing, we have nothing to do here. */
1109 if ((fa
->fsx_xflags
& FS_XFLAG_DAX
) && IS_DAX(inode
))
1111 if (!(fa
->fsx_xflags
& FS_XFLAG_DAX
) && !IS_DAX(inode
))
1114 /* lock, flush and invalidate mapping in preparation for flag change */
1115 xfs_ilock(ip
, XFS_MMAPLOCK_EXCL
| XFS_IOLOCK_EXCL
);
1116 error
= filemap_write_and_wait(inode
->i_mapping
);
1119 error
= invalidate_inode_pages2(inode
->i_mapping
);
1123 *join_flags
= XFS_MMAPLOCK_EXCL
| XFS_IOLOCK_EXCL
;
1127 xfs_iunlock(ip
, XFS_MMAPLOCK_EXCL
| XFS_IOLOCK_EXCL
);
1133 * Set up the transaction structure for the setattr operation, checking that we
1134 * have permission to do so. On success, return a clean transaction and the
1135 * inode locked exclusively ready for further operation specific checks. On
1136 * failure, return an error without modifying or locking the inode.
1138 * The inode might already be IO locked on call. If this is the case, it is
1139 * indicated in @join_flags and we take full responsibility for ensuring they
1140 * are unlocked from now on. Hence if we have an error here, we still have to
1141 * unlock them. Otherwise, once they are joined to the transaction, they will
1142 * be unlocked on commit/cancel.
1144 static struct xfs_trans
*
1145 xfs_ioctl_setattr_get_trans(
1146 struct xfs_inode
*ip
,
1149 struct xfs_mount
*mp
= ip
->i_mount
;
1150 struct xfs_trans
*tp
;
1153 if (mp
->m_flags
& XFS_MOUNT_RDONLY
)
1156 if (XFS_FORCED_SHUTDOWN(mp
))
1159 error
= xfs_trans_alloc(mp
, &M_RES(mp
)->tr_ichange
, 0, 0, 0, &tp
);
1161 return ERR_PTR(error
);
1163 xfs_ilock(ip
, XFS_ILOCK_EXCL
);
1164 xfs_trans_ijoin(tp
, ip
, XFS_ILOCK_EXCL
| join_flags
);
1168 * CAP_FOWNER overrides the following restrictions:
1170 * The user ID of the calling process must be equal to the file owner
1171 * ID, except in cases where the CAP_FSETID capability is applicable.
1173 if (!inode_owner_or_capable(VFS_I(ip
))) {
1178 if (mp
->m_flags
& XFS_MOUNT_WSYNC
)
1179 xfs_trans_set_sync(tp
);
1184 xfs_trans_cancel(tp
);
1187 xfs_iunlock(ip
, join_flags
);
1188 return ERR_PTR(error
);
1192 * extent size hint validation is somewhat cumbersome. Rules are:
1194 * 1. extent size hint is only valid for directories and regular files
1195 * 2. FS_XFLAG_EXTSIZE is only valid for regular files
1196 * 3. FS_XFLAG_EXTSZINHERIT is only valid for directories.
1197 * 4. can only be changed on regular files if no extents are allocated
1198 * 5. can be changed on directories at any time
1199 * 6. extsize hint of 0 turns off hints, clears inode flags.
1200 * 7. Extent size must be a multiple of the appropriate block size.
1201 * 8. for non-realtime files, the extent size hint must be limited
1202 * to half the AG size to avoid alignment extending the extent beyond the
1206 xfs_ioctl_setattr_check_extsize(
1207 struct xfs_inode
*ip
,
1210 struct xfs_mount
*mp
= ip
->i_mount
;
1212 if ((fa
->fsx_xflags
& FS_XFLAG_EXTSIZE
) && !S_ISREG(VFS_I(ip
)->i_mode
))
1215 if ((fa
->fsx_xflags
& FS_XFLAG_EXTSZINHERIT
) &&
1216 !S_ISDIR(VFS_I(ip
)->i_mode
))
1219 if (S_ISREG(VFS_I(ip
)->i_mode
) && ip
->i_d
.di_nextents
&&
1220 ((ip
->i_d
.di_extsize
<< mp
->m_sb
.sb_blocklog
) != fa
->fsx_extsize
))
1223 if (fa
->fsx_extsize
!= 0) {
1225 xfs_fsblock_t extsize_fsb
;
1227 extsize_fsb
= XFS_B_TO_FSB(mp
, fa
->fsx_extsize
);
1228 if (extsize_fsb
> MAXEXTLEN
)
1231 if (XFS_IS_REALTIME_INODE(ip
) ||
1232 (fa
->fsx_xflags
& FS_XFLAG_REALTIME
)) {
1233 size
= mp
->m_sb
.sb_rextsize
<< mp
->m_sb
.sb_blocklog
;
1235 size
= mp
->m_sb
.sb_blocksize
;
1236 if (extsize_fsb
> mp
->m_sb
.sb_agblocks
/ 2)
1240 if (fa
->fsx_extsize
% size
)
1243 fa
->fsx_xflags
&= ~(FS_XFLAG_EXTSIZE
| FS_XFLAG_EXTSZINHERIT
);
1249 * CoW extent size hint validation rules are:
1251 * 1. CoW extent size hint can only be set if reflink is enabled on the fs.
1252 * The inode does not have to have any shared blocks, but it must be a v3.
1253 * 2. FS_XFLAG_COWEXTSIZE is only valid for directories and regular files;
1254 * for a directory, the hint is propagated to new files.
1255 * 3. Can be changed on files & directories at any time.
1256 * 4. CoW extsize hint of 0 turns off hints, clears inode flags.
1257 * 5. Extent size must be a multiple of the appropriate block size.
1258 * 6. The extent size hint must be limited to half the AG size to avoid
1259 * alignment extending the extent beyond the limits of the AG.
1262 xfs_ioctl_setattr_check_cowextsize(
1263 struct xfs_inode
*ip
,
1266 struct xfs_mount
*mp
= ip
->i_mount
;
1268 if (!(fa
->fsx_xflags
& FS_XFLAG_COWEXTSIZE
))
1271 if (!xfs_sb_version_hasreflink(&ip
->i_mount
->m_sb
) ||
1272 ip
->i_d
.di_version
!= 3)
1275 if (!S_ISREG(VFS_I(ip
)->i_mode
) && !S_ISDIR(VFS_I(ip
)->i_mode
))
1278 if (fa
->fsx_cowextsize
!= 0) {
1280 xfs_fsblock_t cowextsize_fsb
;
1282 cowextsize_fsb
= XFS_B_TO_FSB(mp
, fa
->fsx_cowextsize
);
1283 if (cowextsize_fsb
> MAXEXTLEN
)
1286 size
= mp
->m_sb
.sb_blocksize
;
1287 if (cowextsize_fsb
> mp
->m_sb
.sb_agblocks
/ 2)
1290 if (fa
->fsx_cowextsize
% size
)
1293 fa
->fsx_xflags
&= ~FS_XFLAG_COWEXTSIZE
;
1299 xfs_ioctl_setattr_check_projid(
1300 struct xfs_inode
*ip
,
1303 /* Disallow 32bit project ids if projid32bit feature is not enabled. */
1304 if (fa
->fsx_projid
> (uint16_t)-1 &&
1305 !xfs_sb_version_hasprojid32bit(&ip
->i_mount
->m_sb
))
1309 * Project Quota ID state is only allowed to change from within the init
1310 * namespace. Enforce that restriction only if we are trying to change
1311 * the quota ID state. Everything else is allowed in user namespaces.
1313 if (current_user_ns() == &init_user_ns
)
1316 if (xfs_get_projid(ip
) != fa
->fsx_projid
)
1318 if ((fa
->fsx_xflags
& FS_XFLAG_PROJINHERIT
) !=
1319 (ip
->i_d
.di_flags
& XFS_DIFLAG_PROJINHERIT
))
1330 struct xfs_mount
*mp
= ip
->i_mount
;
1331 struct xfs_trans
*tp
;
1332 struct xfs_dquot
*udqp
= NULL
;
1333 struct xfs_dquot
*pdqp
= NULL
;
1334 struct xfs_dquot
*olddquot
= NULL
;
1338 trace_xfs_ioctl_setattr(ip
);
1340 code
= xfs_ioctl_setattr_check_projid(ip
, fa
);
1345 * If disk quotas is on, we make sure that the dquots do exist on disk,
1346 * before we start any other transactions. Trying to do this later
1347 * is messy. We don't care to take a readlock to look at the ids
1348 * in inode here, because we can't hold it across the trans_reserve.
1349 * If the IDs do change before we take the ilock, we're covered
1350 * because the i_*dquot fields will get updated anyway.
1352 if (XFS_IS_QUOTA_ON(mp
)) {
1353 code
= xfs_qm_vop_dqalloc(ip
, ip
->i_d
.di_uid
,
1354 ip
->i_d
.di_gid
, fa
->fsx_projid
,
1355 XFS_QMOPT_PQUOTA
, &udqp
, NULL
, &pdqp
);
1361 * Changing DAX config may require inode locking for mapping
1362 * invalidation. These need to be held all the way to transaction commit
1363 * or cancel time, so need to be passed through to
1364 * xfs_ioctl_setattr_get_trans() so it can apply them to the join call
1367 code
= xfs_ioctl_setattr_dax_invalidate(ip
, fa
, &join_flags
);
1369 goto error_free_dquots
;
1371 tp
= xfs_ioctl_setattr_get_trans(ip
, join_flags
);
1374 goto error_free_dquots
;
1378 if (XFS_IS_QUOTA_RUNNING(mp
) && XFS_IS_PQUOTA_ON(mp
) &&
1379 xfs_get_projid(ip
) != fa
->fsx_projid
) {
1380 code
= xfs_qm_vop_chown_reserve(tp
, ip
, udqp
, NULL
, pdqp
,
1381 capable(CAP_FOWNER
) ? XFS_QMOPT_FORCE_RES
: 0);
1382 if (code
) /* out of quota */
1383 goto error_trans_cancel
;
1386 code
= xfs_ioctl_setattr_check_extsize(ip
, fa
);
1388 goto error_trans_cancel
;
1390 code
= xfs_ioctl_setattr_check_cowextsize(ip
, fa
);
1392 goto error_trans_cancel
;
1394 code
= xfs_ioctl_setattr_xflags(tp
, ip
, fa
);
1396 goto error_trans_cancel
;
1399 * Change file ownership. Must be the owner or privileged. CAP_FSETID
1400 * overrides the following restrictions:
1402 * The set-user-ID and set-group-ID bits of a file will be cleared upon
1403 * successful return from chown()
1406 if ((VFS_I(ip
)->i_mode
& (S_ISUID
|S_ISGID
)) &&
1407 !capable_wrt_inode_uidgid(VFS_I(ip
), CAP_FSETID
))
1408 VFS_I(ip
)->i_mode
&= ~(S_ISUID
|S_ISGID
);
1410 /* Change the ownerships and register project quota modifications */
1411 if (xfs_get_projid(ip
) != fa
->fsx_projid
) {
1412 if (XFS_IS_QUOTA_RUNNING(mp
) && XFS_IS_PQUOTA_ON(mp
)) {
1413 olddquot
= xfs_qm_vop_chown(tp
, ip
,
1414 &ip
->i_pdquot
, pdqp
);
1416 ASSERT(ip
->i_d
.di_version
> 1);
1417 xfs_set_projid(ip
, fa
->fsx_projid
);
1421 * Only set the extent size hint if we've already determined that the
1422 * extent size hint should be set on the inode. If no extent size flags
1423 * are set on the inode then unconditionally clear the extent size hint.
1425 if (ip
->i_d
.di_flags
& (XFS_DIFLAG_EXTSIZE
| XFS_DIFLAG_EXTSZINHERIT
))
1426 ip
->i_d
.di_extsize
= fa
->fsx_extsize
>> mp
->m_sb
.sb_blocklog
;
1428 ip
->i_d
.di_extsize
= 0;
1429 if (ip
->i_d
.di_version
== 3 &&
1430 (ip
->i_d
.di_flags2
& XFS_DIFLAG2_COWEXTSIZE
))
1431 ip
->i_d
.di_cowextsize
= fa
->fsx_cowextsize
>>
1432 mp
->m_sb
.sb_blocklog
;
1434 ip
->i_d
.di_cowextsize
= 0;
1436 code
= xfs_trans_commit(tp
);
1439 * Release any dquot(s) the inode had kept before chown.
1441 xfs_qm_dqrele(olddquot
);
1442 xfs_qm_dqrele(udqp
);
1443 xfs_qm_dqrele(pdqp
);
1448 xfs_trans_cancel(tp
);
1450 xfs_qm_dqrele(udqp
);
1451 xfs_qm_dqrele(pdqp
);
1464 if (copy_from_user(&fa
, arg
, sizeof(fa
)))
1467 error
= mnt_want_write_file(filp
);
1470 error
= xfs_ioctl_setattr(ip
, &fa
);
1471 mnt_drop_write_file(filp
);
1482 flags
= xfs_di2lxflags(ip
->i_d
.di_flags
);
1483 if (copy_to_user(arg
, &flags
, sizeof(flags
)))
1490 struct xfs_inode
*ip
,
1494 struct xfs_trans
*tp
;
1500 if (copy_from_user(&flags
, arg
, sizeof(flags
)))
1503 if (flags
& ~(FS_IMMUTABLE_FL
| FS_APPEND_FL
| \
1504 FS_NOATIME_FL
| FS_NODUMP_FL
| \
1508 fa
.fsx_xflags
= xfs_merge_ioc_xflags(flags
, xfs_ip2xflags(ip
));
1510 error
= mnt_want_write_file(filp
);
1515 * Changing DAX config may require inode locking for mapping
1516 * invalidation. These need to be held all the way to transaction commit
1517 * or cancel time, so need to be passed through to
1518 * xfs_ioctl_setattr_get_trans() so it can apply them to the join call
1521 error
= xfs_ioctl_setattr_dax_invalidate(ip
, &fa
, &join_flags
);
1523 goto out_drop_write
;
1525 tp
= xfs_ioctl_setattr_get_trans(ip
, join_flags
);
1527 error
= PTR_ERR(tp
);
1528 goto out_drop_write
;
1531 error
= xfs_ioctl_setattr_xflags(tp
, ip
, &fa
);
1533 xfs_trans_cancel(tp
);
1534 goto out_drop_write
;
1537 error
= xfs_trans_commit(tp
);
1539 mnt_drop_write_file(filp
);
1544 xfs_getbmap_format(void **ap
, struct getbmapx
*bmv
)
1546 struct getbmap __user
*base
= (struct getbmap __user
*)*ap
;
1548 /* copy only getbmap portion (not getbmapx) */
1549 if (copy_to_user(base
, bmv
, sizeof(struct getbmap
)))
1552 *ap
+= sizeof(struct getbmap
);
1562 struct getbmapx bmx
= { 0 };
1565 /* struct getbmap is a strict subset of struct getbmapx. */
1566 if (copy_from_user(&bmx
, arg
, offsetof(struct getbmapx
, bmv_iflags
)))
1569 if (bmx
.bmv_count
< 2)
1572 bmx
.bmv_iflags
= (cmd
== XFS_IOC_GETBMAPA
? BMV_IF_ATTRFORK
: 0);
1573 if (file
->f_mode
& FMODE_NOCMTIME
)
1574 bmx
.bmv_iflags
|= BMV_IF_NO_DMAPI_READ
;
1576 error
= xfs_getbmap(XFS_I(file_inode(file
)), &bmx
, xfs_getbmap_format
,
1577 (__force
struct getbmap
*)arg
+1);
1581 /* copy back header - only size of getbmap */
1582 if (copy_to_user(arg
, &bmx
, sizeof(struct getbmap
)))
1588 xfs_getbmapx_format(void **ap
, struct getbmapx
*bmv
)
1590 struct getbmapx __user
*base
= (struct getbmapx __user
*)*ap
;
1592 if (copy_to_user(base
, bmv
, sizeof(struct getbmapx
)))
1595 *ap
+= sizeof(struct getbmapx
);
1601 struct xfs_inode
*ip
,
1604 struct getbmapx bmx
;
1607 if (copy_from_user(&bmx
, arg
, sizeof(bmx
)))
1610 if (bmx
.bmv_count
< 2)
1613 if (bmx
.bmv_iflags
& (~BMV_IF_VALID
))
1616 error
= xfs_getbmap(ip
, &bmx
, xfs_getbmapx_format
,
1617 (__force
struct getbmapx
*)arg
+1);
1621 /* copy back header */
1622 if (copy_to_user(arg
, &bmx
, sizeof(struct getbmapx
)))
1628 struct getfsmap_info
{
1629 struct xfs_mount
*mp
;
1630 struct fsmap_head __user
*data
;
1636 xfs_getfsmap_format(struct xfs_fsmap
*xfm
, void *priv
)
1638 struct getfsmap_info
*info
= priv
;
1641 trace_xfs_getfsmap_mapping(info
->mp
, xfm
);
1643 info
->last_flags
= xfm
->fmr_flags
;
1644 xfs_fsmap_from_internal(&fm
, xfm
);
1645 if (copy_to_user(&info
->data
->fmh_recs
[info
->idx
++], &fm
,
1646 sizeof(struct fsmap
)))
1654 struct xfs_inode
*ip
,
1655 struct fsmap_head __user
*arg
)
1657 struct getfsmap_info info
= { NULL
};
1658 struct xfs_fsmap_head xhead
= {0};
1659 struct fsmap_head head
;
1660 bool aborted
= false;
1663 if (copy_from_user(&head
, arg
, sizeof(struct fsmap_head
)))
1665 if (memchr_inv(head
.fmh_reserved
, 0, sizeof(head
.fmh_reserved
)) ||
1666 memchr_inv(head
.fmh_keys
[0].fmr_reserved
, 0,
1667 sizeof(head
.fmh_keys
[0].fmr_reserved
)) ||
1668 memchr_inv(head
.fmh_keys
[1].fmr_reserved
, 0,
1669 sizeof(head
.fmh_keys
[1].fmr_reserved
)))
1672 xhead
.fmh_iflags
= head
.fmh_iflags
;
1673 xhead
.fmh_count
= head
.fmh_count
;
1674 xfs_fsmap_to_internal(&xhead
.fmh_keys
[0], &head
.fmh_keys
[0]);
1675 xfs_fsmap_to_internal(&xhead
.fmh_keys
[1], &head
.fmh_keys
[1]);
1677 trace_xfs_getfsmap_low_key(ip
->i_mount
, &xhead
.fmh_keys
[0]);
1678 trace_xfs_getfsmap_high_key(ip
->i_mount
, &xhead
.fmh_keys
[1]);
1680 info
.mp
= ip
->i_mount
;
1682 error
= xfs_getfsmap(ip
->i_mount
, &xhead
, xfs_getfsmap_format
, &info
);
1683 if (error
== XFS_BTREE_QUERY_RANGE_ABORT
) {
1689 /* If we didn't abort, set the "last" flag in the last fmx */
1690 if (!aborted
&& info
.idx
) {
1691 info
.last_flags
|= FMR_OF_LAST
;
1692 if (copy_to_user(&info
.data
->fmh_recs
[info
.idx
- 1].fmr_flags
,
1693 &info
.last_flags
, sizeof(info
.last_flags
)))
1697 /* copy back header */
1698 head
.fmh_entries
= xhead
.fmh_entries
;
1699 head
.fmh_oflags
= xhead
.fmh_oflags
;
1700 if (copy_to_user(arg
, &head
, sizeof(struct fsmap_head
)))
1710 xfs_inode_t
*ip
, *tip
;
1714 /* Pull information for the target fd */
1715 f
= fdget((int)sxp
->sx_fdtarget
);
1721 if (!(f
.file
->f_mode
& FMODE_WRITE
) ||
1722 !(f
.file
->f_mode
& FMODE_READ
) ||
1723 (f
.file
->f_flags
& O_APPEND
)) {
1728 tmp
= fdget((int)sxp
->sx_fdtmp
);
1734 if (!(tmp
.file
->f_mode
& FMODE_WRITE
) ||
1735 !(tmp
.file
->f_mode
& FMODE_READ
) ||
1736 (tmp
.file
->f_flags
& O_APPEND
)) {
1738 goto out_put_tmp_file
;
1741 if (IS_SWAPFILE(file_inode(f
.file
)) ||
1742 IS_SWAPFILE(file_inode(tmp
.file
))) {
1744 goto out_put_tmp_file
;
1748 * We need to ensure that the fds passed in point to XFS inodes
1749 * before we cast and access them as XFS structures as we have no
1750 * control over what the user passes us here.
1752 if (f
.file
->f_op
!= &xfs_file_operations
||
1753 tmp
.file
->f_op
!= &xfs_file_operations
) {
1755 goto out_put_tmp_file
;
1758 ip
= XFS_I(file_inode(f
.file
));
1759 tip
= XFS_I(file_inode(tmp
.file
));
1761 if (ip
->i_mount
!= tip
->i_mount
) {
1763 goto out_put_tmp_file
;
1766 if (ip
->i_ino
== tip
->i_ino
) {
1768 goto out_put_tmp_file
;
1771 if (XFS_FORCED_SHUTDOWN(ip
->i_mount
)) {
1773 goto out_put_tmp_file
;
1776 error
= xfs_swap_extents(ip
, tip
, sxp
);
1787 * Note: some of the ioctl's return positive numbers as a
1788 * byte count indicating success, such as readlink_by_handle.
1789 * So we don't "sign flip" like most other routines. This means
1790 * true errors need to be returned as a negative value.
1798 struct inode
*inode
= file_inode(filp
);
1799 struct xfs_inode
*ip
= XFS_I(inode
);
1800 struct xfs_mount
*mp
= ip
->i_mount
;
1801 void __user
*arg
= (void __user
*)p
;
1804 trace_xfs_file_ioctl(ip
);
1808 return xfs_ioc_trim(mp
, arg
);
1809 case XFS_IOC_ALLOCSP
:
1810 case XFS_IOC_FREESP
:
1811 case XFS_IOC_RESVSP
:
1812 case XFS_IOC_UNRESVSP
:
1813 case XFS_IOC_ALLOCSP64
:
1814 case XFS_IOC_FREESP64
:
1815 case XFS_IOC_RESVSP64
:
1816 case XFS_IOC_UNRESVSP64
:
1817 case XFS_IOC_ZERO_RANGE
: {
1820 if (copy_from_user(&bf
, arg
, sizeof(bf
)))
1822 return xfs_ioc_space(filp
, cmd
, &bf
);
1824 case XFS_IOC_DIOINFO
: {
1826 xfs_buftarg_t
*target
=
1827 XFS_IS_REALTIME_INODE(ip
) ?
1828 mp
->m_rtdev_targp
: mp
->m_ddev_targp
;
1830 da
.d_mem
= da
.d_miniosz
= target
->bt_logical_sectorsize
;
1831 da
.d_maxiosz
= INT_MAX
& ~(da
.d_miniosz
- 1);
1833 if (copy_to_user(arg
, &da
, sizeof(da
)))
1838 case XFS_IOC_FSBULKSTAT_SINGLE
:
1839 case XFS_IOC_FSBULKSTAT
:
1840 case XFS_IOC_FSINUMBERS
:
1841 return xfs_ioc_bulkstat(mp
, cmd
, arg
);
1843 case XFS_IOC_FSGEOMETRY_V1
:
1844 return xfs_ioc_fsgeometry_v1(mp
, arg
);
1846 case XFS_IOC_FSGEOMETRY
:
1847 return xfs_ioc_fsgeometry(mp
, arg
);
1849 case XFS_IOC_GETVERSION
:
1850 return put_user(inode
->i_generation
, (int __user
*)arg
);
1852 case XFS_IOC_FSGETXATTR
:
1853 return xfs_ioc_fsgetxattr(ip
, 0, arg
);
1854 case XFS_IOC_FSGETXATTRA
:
1855 return xfs_ioc_fsgetxattr(ip
, 1, arg
);
1856 case XFS_IOC_FSSETXATTR
:
1857 return xfs_ioc_fssetxattr(ip
, filp
, arg
);
1858 case XFS_IOC_GETXFLAGS
:
1859 return xfs_ioc_getxflags(ip
, arg
);
1860 case XFS_IOC_SETXFLAGS
:
1861 return xfs_ioc_setxflags(ip
, filp
, arg
);
1863 case XFS_IOC_FSSETDM
: {
1864 struct fsdmidata dmi
;
1866 if (copy_from_user(&dmi
, arg
, sizeof(dmi
)))
1869 error
= mnt_want_write_file(filp
);
1873 error
= xfs_set_dmattrs(ip
, dmi
.fsd_dmevmask
,
1875 mnt_drop_write_file(filp
);
1879 case XFS_IOC_GETBMAP
:
1880 case XFS_IOC_GETBMAPA
:
1881 return xfs_ioc_getbmap(filp
, cmd
, arg
);
1883 case XFS_IOC_GETBMAPX
:
1884 return xfs_ioc_getbmapx(ip
, arg
);
1886 case FS_IOC_GETFSMAP
:
1887 return xfs_ioc_getfsmap(ip
, arg
);
1889 case XFS_IOC_FD_TO_HANDLE
:
1890 case XFS_IOC_PATH_TO_HANDLE
:
1891 case XFS_IOC_PATH_TO_FSHANDLE
: {
1892 xfs_fsop_handlereq_t hreq
;
1894 if (copy_from_user(&hreq
, arg
, sizeof(hreq
)))
1896 return xfs_find_handle(cmd
, &hreq
);
1898 case XFS_IOC_OPEN_BY_HANDLE
: {
1899 xfs_fsop_handlereq_t hreq
;
1901 if (copy_from_user(&hreq
, arg
, sizeof(xfs_fsop_handlereq_t
)))
1903 return xfs_open_by_handle(filp
, &hreq
);
1905 case XFS_IOC_FSSETDM_BY_HANDLE
:
1906 return xfs_fssetdm_by_handle(filp
, arg
);
1908 case XFS_IOC_READLINK_BY_HANDLE
: {
1909 xfs_fsop_handlereq_t hreq
;
1911 if (copy_from_user(&hreq
, arg
, sizeof(xfs_fsop_handlereq_t
)))
1913 return xfs_readlink_by_handle(filp
, &hreq
);
1915 case XFS_IOC_ATTRLIST_BY_HANDLE
:
1916 return xfs_attrlist_by_handle(filp
, arg
);
1918 case XFS_IOC_ATTRMULTI_BY_HANDLE
:
1919 return xfs_attrmulti_by_handle(filp
, arg
);
1921 case XFS_IOC_SWAPEXT
: {
1922 struct xfs_swapext sxp
;
1924 if (copy_from_user(&sxp
, arg
, sizeof(xfs_swapext_t
)))
1926 error
= mnt_want_write_file(filp
);
1929 error
= xfs_ioc_swapext(&sxp
);
1930 mnt_drop_write_file(filp
);
1934 case XFS_IOC_FSCOUNTS
: {
1935 xfs_fsop_counts_t out
;
1937 error
= xfs_fs_counts(mp
, &out
);
1941 if (copy_to_user(arg
, &out
, sizeof(out
)))
1946 case XFS_IOC_SET_RESBLKS
: {
1947 xfs_fsop_resblks_t inout
;
1950 if (!capable(CAP_SYS_ADMIN
))
1953 if (mp
->m_flags
& XFS_MOUNT_RDONLY
)
1956 if (copy_from_user(&inout
, arg
, sizeof(inout
)))
1959 error
= mnt_want_write_file(filp
);
1963 /* input parameter is passed in resblks field of structure */
1965 error
= xfs_reserve_blocks(mp
, &in
, &inout
);
1966 mnt_drop_write_file(filp
);
1970 if (copy_to_user(arg
, &inout
, sizeof(inout
)))
1975 case XFS_IOC_GET_RESBLKS
: {
1976 xfs_fsop_resblks_t out
;
1978 if (!capable(CAP_SYS_ADMIN
))
1981 error
= xfs_reserve_blocks(mp
, NULL
, &out
);
1985 if (copy_to_user(arg
, &out
, sizeof(out
)))
1991 case XFS_IOC_FSGROWFSDATA
: {
1992 xfs_growfs_data_t in
;
1994 if (copy_from_user(&in
, arg
, sizeof(in
)))
1997 error
= mnt_want_write_file(filp
);
2000 error
= xfs_growfs_data(mp
, &in
);
2001 mnt_drop_write_file(filp
);
2005 case XFS_IOC_FSGROWFSLOG
: {
2006 xfs_growfs_log_t in
;
2008 if (copy_from_user(&in
, arg
, sizeof(in
)))
2011 error
= mnt_want_write_file(filp
);
2014 error
= xfs_growfs_log(mp
, &in
);
2015 mnt_drop_write_file(filp
);
2019 case XFS_IOC_FSGROWFSRT
: {
2022 if (copy_from_user(&in
, arg
, sizeof(in
)))
2025 error
= mnt_want_write_file(filp
);
2028 error
= xfs_growfs_rt(mp
, &in
);
2029 mnt_drop_write_file(filp
);
2033 case XFS_IOC_GOINGDOWN
: {
2036 if (!capable(CAP_SYS_ADMIN
))
2039 if (get_user(in
, (uint32_t __user
*)arg
))
2042 return xfs_fs_goingdown(mp
, in
);
2045 case XFS_IOC_ERROR_INJECTION
: {
2046 xfs_error_injection_t in
;
2048 if (!capable(CAP_SYS_ADMIN
))
2051 if (copy_from_user(&in
, arg
, sizeof(in
)))
2054 return xfs_errortag_add(mp
, in
.errtag
);
2057 case XFS_IOC_ERROR_CLEARALL
:
2058 if (!capable(CAP_SYS_ADMIN
))
2061 return xfs_errortag_clearall(mp
);
2063 case XFS_IOC_FREE_EOFBLOCKS
: {
2064 struct xfs_fs_eofblocks eofb
;
2065 struct xfs_eofblocks keofb
;
2067 if (!capable(CAP_SYS_ADMIN
))
2070 if (mp
->m_flags
& XFS_MOUNT_RDONLY
)
2073 if (copy_from_user(&eofb
, arg
, sizeof(eofb
)))
2076 error
= xfs_fs_eofblocks_from_user(&eofb
, &keofb
);
2080 return xfs_icache_free_eofblocks(mp
, &keofb
);