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
23 #include "xfs_trans.h"
27 #include "xfs_alloc.h"
28 #include "xfs_dmapi.h"
29 #include "xfs_mount.h"
30 #include "xfs_bmap_btree.h"
31 #include "xfs_alloc_btree.h"
32 #include "xfs_ialloc_btree.h"
33 #include "xfs_attr_sf.h"
34 #include "xfs_dir2_sf.h"
35 #include "xfs_dinode.h"
36 #include "xfs_inode.h"
37 #include "xfs_btree.h"
38 #include "xfs_ialloc.h"
39 #include "xfs_rtalloc.h"
40 #include "xfs_itable.h"
41 #include "xfs_error.h"
46 #include "xfs_buf_item.h"
47 #include "xfs_utils.h"
48 #include "xfs_dfrag.h"
49 #include "xfs_fsops.h"
50 #include "xfs_vnodeops.h"
52 #include <linux/capability.h>
53 #include <linux/dcache.h>
54 #include <linux/mount.h>
55 #include <linux/namei.h>
56 #include <linux/pagemap.h>
59 * xfs_find_handle maps from userspace xfs_fsop_handlereq structure to
60 * a file or fs handle.
62 * XFS_IOC_PATH_TO_FSHANDLE
63 * returns fs handle for a mount point or path within that mount point
64 * XFS_IOC_FD_TO_HANDLE
65 * returns full handle for a FD opened in user space
66 * XFS_IOC_PATH_TO_HANDLE
67 * returns full handle for a path
76 xfs_fsop_handlereq_t hreq
;
79 if (copy_from_user(&hreq
, arg
, sizeof(hreq
)))
80 return -XFS_ERROR(EFAULT
);
82 memset((char *)&handle
, 0, sizeof(handle
));
85 case XFS_IOC_PATH_TO_FSHANDLE
:
86 case XFS_IOC_PATH_TO_HANDLE
: {
90 error
= user_path_walk_link((const char __user
*)hreq
.path
, &nd
);
94 ASSERT(nd
.path
.dentry
);
95 ASSERT(nd
.path
.dentry
->d_inode
);
96 inode
= igrab(nd
.path
.dentry
->d_inode
);
101 case XFS_IOC_FD_TO_HANDLE
: {
104 file
= fget(hreq
.fd
);
108 ASSERT(file
->f_path
.dentry
);
109 ASSERT(file
->f_path
.dentry
->d_inode
);
110 inode
= igrab(file
->f_path
.dentry
->d_inode
);
117 return -XFS_ERROR(EINVAL
);
120 if (inode
->i_sb
->s_magic
!= XFS_SB_MAGIC
) {
121 /* we're not in XFS anymore, Toto */
123 return -XFS_ERROR(EINVAL
);
126 switch (inode
->i_mode
& S_IFMT
) {
133 return -XFS_ERROR(EBADF
);
136 /* now we can grab the fsid */
137 memcpy(&handle
.ha_fsid
, XFS_I(inode
)->i_mount
->m_fixedfsid
,
139 hsize
= sizeof(xfs_fsid_t
);
141 if (cmd
!= XFS_IOC_PATH_TO_FSHANDLE
) {
142 xfs_inode_t
*ip
= XFS_I(inode
);
145 /* need to get access to the xfs_inode to read the generation */
146 lock_mode
= xfs_ilock_map_shared(ip
);
148 /* fill in fid section of handle from inode */
149 handle
.ha_fid
.fid_len
= sizeof(xfs_fid_t
) -
150 sizeof(handle
.ha_fid
.fid_len
);
151 handle
.ha_fid
.fid_pad
= 0;
152 handle
.ha_fid
.fid_gen
= ip
->i_d
.di_gen
;
153 handle
.ha_fid
.fid_ino
= ip
->i_ino
;
155 xfs_iunlock_map_shared(ip
, lock_mode
);
157 hsize
= XFS_HSIZE(handle
);
160 /* now copy our handle into the user buffer & write out the size */
161 if (copy_to_user(hreq
.ohandle
, &handle
, hsize
) ||
162 copy_to_user(hreq
.ohandlen
, &hsize
, sizeof(__s32
))) {
164 return -XFS_ERROR(EFAULT
);
173 * Convert userspace handle data into inode.
175 * We use the fact that all the fsop_handlereq ioctl calls have a data
176 * structure argument whose first component is always a xfs_fsop_handlereq_t,
177 * so we can pass that sub structure into this handy, shared routine.
179 * If no error, caller must always iput the returned inode.
182 xfs_vget_fsop_handlereq(
184 struct inode
*parinode
, /* parent inode pointer */
185 xfs_fsop_handlereq_t
*hreq
,
186 struct inode
**inode
)
191 xfs_handle_t
*handlep
;
199 * Only allow handle opens under a directory.
201 if (!S_ISDIR(parinode
->i_mode
))
202 return XFS_ERROR(ENOTDIR
);
204 hanp
= hreq
->ihandle
;
205 hlen
= hreq
->ihandlen
;
208 if (hlen
< sizeof(handlep
->ha_fsid
) || hlen
> sizeof(*handlep
))
209 return XFS_ERROR(EINVAL
);
210 if (copy_from_user(handlep
, hanp
, hlen
))
211 return XFS_ERROR(EFAULT
);
212 if (hlen
< sizeof(*handlep
))
213 memset(((char *)handlep
) + hlen
, 0, sizeof(*handlep
) - hlen
);
214 if (hlen
> sizeof(handlep
->ha_fsid
)) {
215 if (handlep
->ha_fid
.fid_len
!=
216 (hlen
- sizeof(handlep
->ha_fsid
) -
217 sizeof(handlep
->ha_fid
.fid_len
)) ||
218 handlep
->ha_fid
.fid_pad
)
219 return XFS_ERROR(EINVAL
);
223 * Crack the handle, obtain the inode # & generation #
225 xfid
= (struct xfs_fid
*)&handlep
->ha_fid
;
226 if (xfid
->fid_len
== sizeof(*xfid
) - sizeof(xfid
->fid_len
)) {
228 igen
= xfid
->fid_gen
;
230 return XFS_ERROR(EINVAL
);
234 * Get the XFS inode, building a Linux inode to go with it.
236 error
= xfs_iget(mp
, NULL
, ino
, 0, XFS_ILOCK_SHARED
, &ip
, 0);
240 return XFS_ERROR(EIO
);
241 if (ip
->i_d
.di_mode
== 0 || ip
->i_d
.di_gen
!= igen
) {
242 xfs_iput_new(ip
, XFS_ILOCK_SHARED
);
243 return XFS_ERROR(ENOENT
);
246 xfs_iunlock(ip
, XFS_ILOCK_SHARED
);
248 *inode
= XFS_ITOV(ip
);
256 struct file
*parfilp
,
257 struct inode
*parinode
)
264 struct dentry
*dentry
;
265 xfs_fsop_handlereq_t hreq
;
267 if (!capable(CAP_SYS_ADMIN
))
268 return -XFS_ERROR(EPERM
);
269 if (copy_from_user(&hreq
, arg
, sizeof(xfs_fsop_handlereq_t
)))
270 return -XFS_ERROR(EFAULT
);
272 error
= xfs_vget_fsop_handlereq(mp
, parinode
, &hreq
, &inode
);
276 /* Restrict xfs_open_by_handle to directories & regular files. */
277 if (!(S_ISREG(inode
->i_mode
) || S_ISDIR(inode
->i_mode
))) {
279 return -XFS_ERROR(EINVAL
);
282 #if BITS_PER_LONG != 32
283 hreq
.oflags
|= O_LARGEFILE
;
285 /* Put open permission in namei format. */
286 permflag
= hreq
.oflags
;
287 if ((permflag
+1) & O_ACCMODE
)
289 if (permflag
& O_TRUNC
)
292 if ((!(permflag
& O_APPEND
) || (permflag
& O_TRUNC
)) &&
293 (permflag
& FMODE_WRITE
) && IS_APPEND(inode
)) {
295 return -XFS_ERROR(EPERM
);
298 if ((permflag
& FMODE_WRITE
) && IS_IMMUTABLE(inode
)) {
300 return -XFS_ERROR(EACCES
);
303 /* Can't write directories. */
304 if ( S_ISDIR(inode
->i_mode
) && (permflag
& FMODE_WRITE
)) {
306 return -XFS_ERROR(EISDIR
);
309 if ((new_fd
= get_unused_fd()) < 0) {
314 dentry
= d_alloc_anon(inode
);
315 if (dentry
== NULL
) {
317 put_unused_fd(new_fd
);
318 return -XFS_ERROR(ENOMEM
);
321 /* Ensure umount returns EBUSY on umounts while this file is open. */
322 mntget(parfilp
->f_path
.mnt
);
324 /* Create file pointer. */
325 filp
= dentry_open(dentry
, parfilp
->f_path
.mnt
, hreq
.oflags
);
327 put_unused_fd(new_fd
);
328 return -XFS_ERROR(-PTR_ERR(filp
));
330 if (inode
->i_mode
& S_IFREG
) {
331 /* invisible operation should not change atime */
332 filp
->f_flags
|= O_NOATIME
;
333 filp
->f_op
= &xfs_invis_file_operations
;
336 fd_install(new_fd
, filp
);
341 * This is a copy from fs/namei.c:vfs_readlink(), except for removing it's
342 * unused first argument.
357 if (len
> (unsigned) buflen
)
359 if (copy_to_user(buffer
, link
, len
))
367 xfs_readlink_by_handle(
370 struct inode
*parinode
)
373 xfs_fsop_handlereq_t hreq
;
378 if (!capable(CAP_SYS_ADMIN
))
379 return -XFS_ERROR(EPERM
);
380 if (copy_from_user(&hreq
, arg
, sizeof(xfs_fsop_handlereq_t
)))
381 return -XFS_ERROR(EFAULT
);
383 error
= xfs_vget_fsop_handlereq(mp
, parinode
, &hreq
, &inode
);
387 /* Restrict this handle operation to symlinks only. */
388 if (!S_ISLNK(inode
->i_mode
)) {
389 error
= -XFS_ERROR(EINVAL
);
393 if (copy_from_user(&olen
, hreq
.ohandlen
, sizeof(__u32
))) {
394 error
= -XFS_ERROR(EFAULT
);
398 link
= kmalloc(MAXPATHLEN
+1, GFP_KERNEL
);
402 error
= -xfs_readlink(XFS_I(inode
), link
);
405 error
= do_readlink(hreq
.ohandle
, olen
, link
);
417 xfs_fssetdm_by_handle(
420 struct inode
*parinode
)
423 struct fsdmidata fsd
;
424 xfs_fsop_setdm_handlereq_t dmhreq
;
427 if (!capable(CAP_MKNOD
))
428 return -XFS_ERROR(EPERM
);
429 if (copy_from_user(&dmhreq
, arg
, sizeof(xfs_fsop_setdm_handlereq_t
)))
430 return -XFS_ERROR(EFAULT
);
432 error
= xfs_vget_fsop_handlereq(mp
, parinode
, &dmhreq
.hreq
, &inode
);
436 if (IS_IMMUTABLE(inode
) || IS_APPEND(inode
)) {
437 error
= -XFS_ERROR(EPERM
);
441 if (copy_from_user(&fsd
, dmhreq
.data
, sizeof(fsd
))) {
442 error
= -XFS_ERROR(EFAULT
);
446 error
= -xfs_set_dmattrs(XFS_I(inode
), fsd
.fsd_dmevmask
,
455 xfs_attrlist_by_handle(
458 struct inode
*parinode
)
461 attrlist_cursor_kern_t
*cursor
;
462 xfs_fsop_attrlist_handlereq_t al_hreq
;
466 if (!capable(CAP_SYS_ADMIN
))
467 return -XFS_ERROR(EPERM
);
468 if (copy_from_user(&al_hreq
, arg
, sizeof(xfs_fsop_attrlist_handlereq_t
)))
469 return -XFS_ERROR(EFAULT
);
470 if (al_hreq
.buflen
> XATTR_LIST_MAX
)
471 return -XFS_ERROR(EINVAL
);
473 error
= xfs_vget_fsop_handlereq(mp
, parinode
, &al_hreq
.hreq
, &inode
);
477 kbuf
= kmalloc(al_hreq
.buflen
, GFP_KERNEL
);
481 cursor
= (attrlist_cursor_kern_t
*)&al_hreq
.pos
;
482 error
= xfs_attr_list(XFS_I(inode
), kbuf
, al_hreq
.buflen
,
483 al_hreq
.flags
, cursor
);
487 if (copy_to_user(al_hreq
.buffer
, kbuf
, al_hreq
.buflen
))
499 xfs_attrmulti_attr_get(
509 if (*len
> XATTR_SIZE_MAX
)
511 kbuf
= kmalloc(*len
, GFP_KERNEL
);
515 error
= xfs_attr_get(XFS_I(inode
), name
, kbuf
, (int *)len
, flags
, NULL
);
519 if (copy_to_user(ubuf
, kbuf
, *len
))
528 xfs_attrmulti_attr_set(
531 const char __user
*ubuf
,
538 if (IS_RDONLY(inode
))
540 if (IS_IMMUTABLE(inode
) || IS_APPEND(inode
))
542 if (len
> XATTR_SIZE_MAX
)
545 kbuf
= kmalloc(len
, GFP_KERNEL
);
549 if (copy_from_user(kbuf
, ubuf
, len
))
552 error
= xfs_attr_set(XFS_I(inode
), name
, kbuf
, len
, flags
);
560 xfs_attrmulti_attr_remove(
565 if (IS_RDONLY(inode
))
567 if (IS_IMMUTABLE(inode
) || IS_APPEND(inode
))
569 return xfs_attr_remove(XFS_I(inode
), name
, flags
);
573 xfs_attrmulti_by_handle(
576 struct inode
*parinode
)
579 xfs_attr_multiop_t
*ops
;
580 xfs_fsop_attrmulti_handlereq_t am_hreq
;
582 unsigned int i
, size
;
585 if (!capable(CAP_SYS_ADMIN
))
586 return -XFS_ERROR(EPERM
);
587 if (copy_from_user(&am_hreq
, arg
, sizeof(xfs_fsop_attrmulti_handlereq_t
)))
588 return -XFS_ERROR(EFAULT
);
590 error
= xfs_vget_fsop_handlereq(mp
, parinode
, &am_hreq
.hreq
, &inode
);
595 size
= am_hreq
.opcount
* sizeof(attr_multiop_t
);
596 if (!size
|| size
> 16 * PAGE_SIZE
)
600 ops
= kmalloc(size
, GFP_KERNEL
);
605 if (copy_from_user(ops
, am_hreq
.ops
, size
))
608 attr_name
= kmalloc(MAXNAMELEN
, GFP_KERNEL
);
614 for (i
= 0; i
< am_hreq
.opcount
; i
++) {
615 ops
[i
].am_error
= strncpy_from_user(attr_name
,
616 ops
[i
].am_attrname
, MAXNAMELEN
);
617 if (ops
[i
].am_error
== 0 || ops
[i
].am_error
== MAXNAMELEN
)
619 if (ops
[i
].am_error
< 0)
622 switch (ops
[i
].am_opcode
) {
624 ops
[i
].am_error
= xfs_attrmulti_attr_get(inode
,
625 attr_name
, ops
[i
].am_attrvalue
,
626 &ops
[i
].am_length
, ops
[i
].am_flags
);
629 ops
[i
].am_error
= xfs_attrmulti_attr_set(inode
,
630 attr_name
, ops
[i
].am_attrvalue
,
631 ops
[i
].am_length
, ops
[i
].am_flags
);
634 ops
[i
].am_error
= xfs_attrmulti_attr_remove(inode
,
635 attr_name
, ops
[i
].am_flags
);
638 ops
[i
].am_error
= EINVAL
;
642 if (copy_to_user(am_hreq
.ops
, ops
, size
))
643 error
= XFS_ERROR(EFAULT
);
656 struct xfs_inode
*ip
,
667 if (inode
->i_flags
& (S_IMMUTABLE
|S_APPEND
))
668 return -XFS_ERROR(EPERM
);
670 if (!(filp
->f_mode
& FMODE_WRITE
))
671 return -XFS_ERROR(EBADF
);
673 if (!S_ISREG(inode
->i_mode
))
674 return -XFS_ERROR(EINVAL
);
676 if (copy_from_user(&bf
, arg
, sizeof(bf
)))
677 return -XFS_ERROR(EFAULT
);
679 if (filp
->f_flags
& (O_NDELAY
|O_NONBLOCK
))
680 attr_flags
|= ATTR_NONBLOCK
;
681 if (ioflags
& IO_INVIS
)
682 attr_flags
|= ATTR_DMI
;
684 error
= xfs_change_file_space(ip
, cmd
, &bf
, filp
->f_pos
,
695 xfs_fsop_bulkreq_t bulkreq
;
696 int count
; /* # of records returned */
697 xfs_ino_t inlast
; /* last inode number */
701 /* done = 1 if there are more stats to get and if bulkstat */
702 /* should be called again (unused here, but used in dmapi) */
704 if (!capable(CAP_SYS_ADMIN
))
707 if (XFS_FORCED_SHUTDOWN(mp
))
708 return -XFS_ERROR(EIO
);
710 if (copy_from_user(&bulkreq
, arg
, sizeof(xfs_fsop_bulkreq_t
)))
711 return -XFS_ERROR(EFAULT
);
713 if (copy_from_user(&inlast
, bulkreq
.lastip
, sizeof(__s64
)))
714 return -XFS_ERROR(EFAULT
);
716 if ((count
= bulkreq
.icount
) <= 0)
717 return -XFS_ERROR(EINVAL
);
719 if (bulkreq
.ubuffer
== NULL
)
720 return -XFS_ERROR(EINVAL
);
722 if (cmd
== XFS_IOC_FSINUMBERS
)
723 error
= xfs_inumbers(mp
, &inlast
, &count
,
724 bulkreq
.ubuffer
, xfs_inumbers_fmt
);
725 else if (cmd
== XFS_IOC_FSBULKSTAT_SINGLE
)
726 error
= xfs_bulkstat_single(mp
, &inlast
,
727 bulkreq
.ubuffer
, &done
);
728 else /* XFS_IOC_FSBULKSTAT */
729 error
= xfs_bulkstat(mp
, &inlast
, &count
,
730 (bulkstat_one_pf
)xfs_bulkstat_one
, NULL
,
731 sizeof(xfs_bstat_t
), bulkreq
.ubuffer
,
732 BULKSTAT_FG_QUICK
, &done
);
737 if (bulkreq
.ocount
!= NULL
) {
738 if (copy_to_user(bulkreq
.lastip
, &inlast
,
740 return -XFS_ERROR(EFAULT
);
742 if (copy_to_user(bulkreq
.ocount
, &count
, sizeof(count
)))
743 return -XFS_ERROR(EFAULT
);
750 xfs_ioc_fsgeometry_v1(
754 xfs_fsop_geom_v1_t fsgeo
;
757 error
= xfs_fs_geometry(mp
, (xfs_fsop_geom_t
*)&fsgeo
, 3);
761 if (copy_to_user(arg
, &fsgeo
, sizeof(fsgeo
)))
762 return -XFS_ERROR(EFAULT
);
771 xfs_fsop_geom_t fsgeo
;
774 error
= xfs_fs_geometry(mp
, &fsgeo
, 4);
778 if (copy_to_user(arg
, &fsgeo
, sizeof(fsgeo
)))
779 return -XFS_ERROR(EFAULT
);
784 * Linux extended inode flags interface.
788 xfs_merge_ioc_xflags(
792 unsigned int xflags
= start
;
794 if (flags
& FS_IMMUTABLE_FL
)
795 xflags
|= XFS_XFLAG_IMMUTABLE
;
797 xflags
&= ~XFS_XFLAG_IMMUTABLE
;
798 if (flags
& FS_APPEND_FL
)
799 xflags
|= XFS_XFLAG_APPEND
;
801 xflags
&= ~XFS_XFLAG_APPEND
;
802 if (flags
& FS_SYNC_FL
)
803 xflags
|= XFS_XFLAG_SYNC
;
805 xflags
&= ~XFS_XFLAG_SYNC
;
806 if (flags
& FS_NOATIME_FL
)
807 xflags
|= XFS_XFLAG_NOATIME
;
809 xflags
&= ~XFS_XFLAG_NOATIME
;
810 if (flags
& FS_NODUMP_FL
)
811 xflags
|= XFS_XFLAG_NODUMP
;
813 xflags
&= ~XFS_XFLAG_NODUMP
;
822 unsigned int flags
= 0;
824 if (di_flags
& XFS_DIFLAG_IMMUTABLE
)
825 flags
|= FS_IMMUTABLE_FL
;
826 if (di_flags
& XFS_DIFLAG_APPEND
)
827 flags
|= FS_APPEND_FL
;
828 if (di_flags
& XFS_DIFLAG_SYNC
)
830 if (di_flags
& XFS_DIFLAG_NOATIME
)
831 flags
|= FS_NOATIME_FL
;
832 if (di_flags
& XFS_DIFLAG_NODUMP
)
833 flags
|= FS_NODUMP_FL
;
845 xfs_ilock(ip
, XFS_ILOCK_SHARED
);
846 fa
.fsx_xflags
= xfs_ip2xflags(ip
);
847 fa
.fsx_extsize
= ip
->i_d
.di_extsize
<< ip
->i_mount
->m_sb
.sb_blocklog
;
848 fa
.fsx_projid
= ip
->i_d
.di_projid
;
852 if (ip
->i_afp
->if_flags
& XFS_IFEXTENTS
)
853 fa
.fsx_nextents
= ip
->i_afp
->if_bytes
/
854 sizeof(xfs_bmbt_rec_t
);
856 fa
.fsx_nextents
= ip
->i_d
.di_anextents
;
860 if (ip
->i_df
.if_flags
& XFS_IFEXTENTS
)
861 fa
.fsx_nextents
= ip
->i_df
.if_bytes
/
862 sizeof(xfs_bmbt_rec_t
);
864 fa
.fsx_nextents
= ip
->i_d
.di_nextents
;
866 xfs_iunlock(ip
, XFS_ILOCK_SHARED
);
868 if (copy_to_user(arg
, &fa
, sizeof(fa
)))
880 struct bhv_vattr
*vattr
;
884 if (copy_from_user(&fa
, arg
, sizeof(fa
)))
887 vattr
= kmalloc(sizeof(*vattr
), GFP_KERNEL
);
888 if (unlikely(!vattr
))
892 if (filp
->f_flags
& (O_NDELAY
|O_NONBLOCK
))
893 attr_flags
|= ATTR_NONBLOCK
;
895 vattr
->va_mask
= XFS_AT_XFLAGS
| XFS_AT_EXTSIZE
| XFS_AT_PROJID
;
896 vattr
->va_xflags
= fa
.fsx_xflags
;
897 vattr
->va_extsize
= fa
.fsx_extsize
;
898 vattr
->va_projid
= fa
.fsx_projid
;
900 error
= -xfs_setattr(ip
, vattr
, attr_flags
, NULL
);
902 vn_revalidate(XFS_ITOV(ip
)); /* update flags */
914 flags
= xfs_di2lxflags(ip
->i_d
.di_flags
);
915 if (copy_to_user(arg
, &flags
, sizeof(flags
)))
926 struct bhv_vattr
*vattr
;
931 if (copy_from_user(&flags
, arg
, sizeof(flags
)))
934 if (flags
& ~(FS_IMMUTABLE_FL
| FS_APPEND_FL
| \
935 FS_NOATIME_FL
| FS_NODUMP_FL
| \
939 vattr
= kmalloc(sizeof(*vattr
), GFP_KERNEL
);
940 if (unlikely(!vattr
))
944 if (filp
->f_flags
& (O_NDELAY
|O_NONBLOCK
))
945 attr_flags
|= ATTR_NONBLOCK
;
947 vattr
->va_mask
= XFS_AT_XFLAGS
;
948 vattr
->va_xflags
= xfs_merge_ioc_xflags(flags
, xfs_ip2xflags(ip
));
950 error
= -xfs_setattr(ip
, vattr
, attr_flags
, NULL
);
952 vn_revalidate(XFS_ITOV(ip
)); /* update flags */
959 struct xfs_inode
*ip
,
968 if (copy_from_user(&bm
, arg
, sizeof(bm
)))
969 return -XFS_ERROR(EFAULT
);
971 if (bm
.bmv_count
< 2)
972 return -XFS_ERROR(EINVAL
);
974 iflags
= (cmd
== XFS_IOC_GETBMAPA
? BMV_IF_ATTRFORK
: 0);
975 if (ioflags
& IO_INVIS
)
976 iflags
|= BMV_IF_NO_DMAPI_READ
;
978 error
= xfs_getbmap(ip
, &bm
, (struct getbmap __user
*)arg
+1, iflags
);
982 if (copy_to_user(arg
, &bm
, sizeof(bm
)))
983 return -XFS_ERROR(EFAULT
);
989 struct xfs_inode
*ip
,
997 if (copy_from_user(&bmx
, arg
, sizeof(bmx
)))
998 return -XFS_ERROR(EFAULT
);
1000 if (bmx
.bmv_count
< 2)
1001 return -XFS_ERROR(EINVAL
);
1004 * Map input getbmapx structure to a getbmap
1005 * structure for xfs_getbmap.
1007 GETBMAP_CONVERT(bmx
, bm
);
1009 iflags
= bmx
.bmv_iflags
;
1011 if (iflags
& (~BMV_IF_VALID
))
1012 return -XFS_ERROR(EINVAL
);
1014 iflags
|= BMV_IF_EXTENDED
;
1016 error
= xfs_getbmap(ip
, &bm
, (struct getbmapx __user
*)arg
+1, iflags
);
1020 GETBMAP_CONVERT(bm
, bmx
);
1022 if (copy_to_user(arg
, &bmx
, sizeof(bmx
)))
1023 return -XFS_ERROR(EFAULT
);
1036 struct inode
*inode
= filp
->f_path
.dentry
->d_inode
;
1037 xfs_mount_t
*mp
= ip
->i_mount
;
1040 xfs_itrace_entry(XFS_I(inode
));
1043 case XFS_IOC_ALLOCSP
:
1044 case XFS_IOC_FREESP
:
1045 case XFS_IOC_RESVSP
:
1046 case XFS_IOC_UNRESVSP
:
1047 case XFS_IOC_ALLOCSP64
:
1048 case XFS_IOC_FREESP64
:
1049 case XFS_IOC_RESVSP64
:
1050 case XFS_IOC_UNRESVSP64
:
1052 * Only allow the sys admin to reserve space unless
1053 * unwritten extents are enabled.
1055 if (!xfs_sb_version_hasextflgbit(&mp
->m_sb
) &&
1056 !capable(CAP_SYS_ADMIN
))
1059 return xfs_ioc_space(ip
, inode
, filp
, ioflags
, cmd
, arg
);
1061 case XFS_IOC_DIOINFO
: {
1063 xfs_buftarg_t
*target
=
1064 XFS_IS_REALTIME_INODE(ip
) ?
1065 mp
->m_rtdev_targp
: mp
->m_ddev_targp
;
1067 da
.d_mem
= da
.d_miniosz
= 1 << target
->bt_sshift
;
1068 da
.d_maxiosz
= INT_MAX
& ~(da
.d_miniosz
- 1);
1070 if (copy_to_user(arg
, &da
, sizeof(da
)))
1071 return -XFS_ERROR(EFAULT
);
1075 case XFS_IOC_FSBULKSTAT_SINGLE
:
1076 case XFS_IOC_FSBULKSTAT
:
1077 case XFS_IOC_FSINUMBERS
:
1078 return xfs_ioc_bulkstat(mp
, cmd
, arg
);
1080 case XFS_IOC_FSGEOMETRY_V1
:
1081 return xfs_ioc_fsgeometry_v1(mp
, arg
);
1083 case XFS_IOC_FSGEOMETRY
:
1084 return xfs_ioc_fsgeometry(mp
, arg
);
1086 case XFS_IOC_GETVERSION
:
1087 return put_user(inode
->i_generation
, (int __user
*)arg
);
1089 case XFS_IOC_FSGETXATTR
:
1090 return xfs_ioc_fsgetxattr(ip
, 0, arg
);
1091 case XFS_IOC_FSGETXATTRA
:
1092 return xfs_ioc_fsgetxattr(ip
, 1, arg
);
1093 case XFS_IOC_FSSETXATTR
:
1094 return xfs_ioc_fssetxattr(ip
, filp
, arg
);
1095 case XFS_IOC_GETXFLAGS
:
1096 return xfs_ioc_getxflags(ip
, arg
);
1097 case XFS_IOC_SETXFLAGS
:
1098 return xfs_ioc_setxflags(ip
, filp
, arg
);
1100 case XFS_IOC_FSSETDM
: {
1101 struct fsdmidata dmi
;
1103 if (copy_from_user(&dmi
, arg
, sizeof(dmi
)))
1104 return -XFS_ERROR(EFAULT
);
1106 error
= xfs_set_dmattrs(ip
, dmi
.fsd_dmevmask
,
1111 case XFS_IOC_GETBMAP
:
1112 case XFS_IOC_GETBMAPA
:
1113 return xfs_ioc_getbmap(ip
, ioflags
, cmd
, arg
);
1115 case XFS_IOC_GETBMAPX
:
1116 return xfs_ioc_getbmapx(ip
, arg
);
1118 case XFS_IOC_FD_TO_HANDLE
:
1119 case XFS_IOC_PATH_TO_HANDLE
:
1120 case XFS_IOC_PATH_TO_FSHANDLE
:
1121 return xfs_find_handle(cmd
, arg
);
1123 case XFS_IOC_OPEN_BY_HANDLE
:
1124 return xfs_open_by_handle(mp
, arg
, filp
, inode
);
1126 case XFS_IOC_FSSETDM_BY_HANDLE
:
1127 return xfs_fssetdm_by_handle(mp
, arg
, inode
);
1129 case XFS_IOC_READLINK_BY_HANDLE
:
1130 return xfs_readlink_by_handle(mp
, arg
, inode
);
1132 case XFS_IOC_ATTRLIST_BY_HANDLE
:
1133 return xfs_attrlist_by_handle(mp
, arg
, inode
);
1135 case XFS_IOC_ATTRMULTI_BY_HANDLE
:
1136 return xfs_attrmulti_by_handle(mp
, arg
, inode
);
1138 case XFS_IOC_SWAPEXT
: {
1139 error
= xfs_swapext((struct xfs_swapext __user
*)arg
);
1143 case XFS_IOC_FSCOUNTS
: {
1144 xfs_fsop_counts_t out
;
1146 error
= xfs_fs_counts(mp
, &out
);
1150 if (copy_to_user(arg
, &out
, sizeof(out
)))
1151 return -XFS_ERROR(EFAULT
);
1155 case XFS_IOC_SET_RESBLKS
: {
1156 xfs_fsop_resblks_t inout
;
1159 if (!capable(CAP_SYS_ADMIN
))
1162 if (copy_from_user(&inout
, arg
, sizeof(inout
)))
1163 return -XFS_ERROR(EFAULT
);
1165 /* input parameter is passed in resblks field of structure */
1167 error
= xfs_reserve_blocks(mp
, &in
, &inout
);
1171 if (copy_to_user(arg
, &inout
, sizeof(inout
)))
1172 return -XFS_ERROR(EFAULT
);
1176 case XFS_IOC_GET_RESBLKS
: {
1177 xfs_fsop_resblks_t out
;
1179 if (!capable(CAP_SYS_ADMIN
))
1182 error
= xfs_reserve_blocks(mp
, NULL
, &out
);
1186 if (copy_to_user(arg
, &out
, sizeof(out
)))
1187 return -XFS_ERROR(EFAULT
);
1192 case XFS_IOC_FSGROWFSDATA
: {
1193 xfs_growfs_data_t in
;
1195 if (!capable(CAP_SYS_ADMIN
))
1198 if (copy_from_user(&in
, arg
, sizeof(in
)))
1199 return -XFS_ERROR(EFAULT
);
1201 error
= xfs_growfs_data(mp
, &in
);
1205 case XFS_IOC_FSGROWFSLOG
: {
1206 xfs_growfs_log_t in
;
1208 if (!capable(CAP_SYS_ADMIN
))
1211 if (copy_from_user(&in
, arg
, sizeof(in
)))
1212 return -XFS_ERROR(EFAULT
);
1214 error
= xfs_growfs_log(mp
, &in
);
1218 case XFS_IOC_FSGROWFSRT
: {
1221 if (!capable(CAP_SYS_ADMIN
))
1224 if (copy_from_user(&in
, arg
, sizeof(in
)))
1225 return -XFS_ERROR(EFAULT
);
1227 error
= xfs_growfs_rt(mp
, &in
);
1231 case XFS_IOC_FREEZE
:
1232 if (!capable(CAP_SYS_ADMIN
))
1235 if (inode
->i_sb
->s_frozen
== SB_UNFROZEN
)
1236 freeze_bdev(inode
->i_sb
->s_bdev
);
1240 if (!capable(CAP_SYS_ADMIN
))
1242 if (inode
->i_sb
->s_frozen
!= SB_UNFROZEN
)
1243 thaw_bdev(inode
->i_sb
->s_bdev
, inode
->i_sb
);
1246 case XFS_IOC_GOINGDOWN
: {
1249 if (!capable(CAP_SYS_ADMIN
))
1252 if (get_user(in
, (__uint32_t __user
*)arg
))
1253 return -XFS_ERROR(EFAULT
);
1255 error
= xfs_fs_goingdown(mp
, in
);
1259 case XFS_IOC_ERROR_INJECTION
: {
1260 xfs_error_injection_t in
;
1262 if (!capable(CAP_SYS_ADMIN
))
1265 if (copy_from_user(&in
, arg
, sizeof(in
)))
1266 return -XFS_ERROR(EFAULT
);
1268 error
= xfs_errortag_add(in
.errtag
, mp
);
1272 case XFS_IOC_ERROR_CLEARALL
:
1273 if (!capable(CAP_SYS_ADMIN
))
1276 error
= xfs_errortag_clearall(mp
, 1);