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"
28 #include "xfs_alloc.h"
29 #include "xfs_dmapi.h"
30 #include "xfs_mount.h"
31 #include "xfs_bmap_btree.h"
32 #include "xfs_alloc_btree.h"
33 #include "xfs_ialloc_btree.h"
34 #include "xfs_dir_sf.h"
35 #include "xfs_attr_sf.h"
36 #include "xfs_dir2_sf.h"
37 #include "xfs_dinode.h"
38 #include "xfs_inode.h"
39 #include "xfs_btree.h"
40 #include "xfs_ialloc.h"
41 #include "xfs_rtalloc.h"
42 #include "xfs_itable.h"
43 #include "xfs_error.h"
50 #include "xfs_buf_item.h"
51 #include "xfs_utils.h"
52 #include "xfs_dfrag.h"
53 #include "xfs_fsops.h"
55 #include <linux/dcache.h>
56 #include <linux/mount.h>
57 #include <linux/namei.h>
58 #include <linux/pagemap.h>
61 * xfs_find_handle maps from userspace xfs_fsop_handlereq structure to
62 * a file or fs handle.
64 * XFS_IOC_PATH_TO_FSHANDLE
65 * returns fs handle for a mount point or path within that mount point
66 * XFS_IOC_FD_TO_HANDLE
67 * returns full handle for a FD opened in user space
68 * XFS_IOC_PATH_TO_HANDLE
69 * returns full handle for a path
78 xfs_fsop_handlereq_t hreq
;
82 if (copy_from_user(&hreq
, arg
, sizeof(hreq
)))
83 return -XFS_ERROR(EFAULT
);
85 memset((char *)&handle
, 0, sizeof(handle
));
88 case XFS_IOC_PATH_TO_FSHANDLE
:
89 case XFS_IOC_PATH_TO_HANDLE
: {
93 error
= user_path_walk_link((const char __user
*)hreq
.path
, &nd
);
98 ASSERT(nd
.dentry
->d_inode
);
99 inode
= igrab(nd
.dentry
->d_inode
);
104 case XFS_IOC_FD_TO_HANDLE
: {
107 file
= fget(hreq
.fd
);
111 ASSERT(file
->f_dentry
);
112 ASSERT(file
->f_dentry
->d_inode
);
113 inode
= igrab(file
->f_dentry
->d_inode
);
120 return -XFS_ERROR(EINVAL
);
123 if (inode
->i_sb
->s_magic
!= XFS_SB_MAGIC
) {
124 /* we're not in XFS anymore, Toto */
126 return -XFS_ERROR(EINVAL
);
129 switch (inode
->i_mode
& S_IFMT
) {
136 return -XFS_ERROR(EBADF
);
139 /* we need the vnode */
140 vp
= LINVFS_GET_VP(inode
);
142 /* now we can grab the fsid */
143 memcpy(&handle
.ha_fsid
, vp
->v_vfsp
->vfs_altfsid
, sizeof(xfs_fsid_t
));
144 hsize
= sizeof(xfs_fsid_t
);
146 if (cmd
!= XFS_IOC_PATH_TO_FSHANDLE
) {
151 /* need to get access to the xfs_inode to read the generation */
152 bhv
= vn_bhv_lookup_unlocked(VN_BHV_HEAD(vp
), &xfs_vnodeops
);
154 ip
= XFS_BHVTOI(bhv
);
156 lock_mode
= xfs_ilock_map_shared(ip
);
158 /* fill in fid section of handle from inode */
159 handle
.ha_fid
.xfs_fid_len
= sizeof(xfs_fid_t
) -
160 sizeof(handle
.ha_fid
.xfs_fid_len
);
161 handle
.ha_fid
.xfs_fid_pad
= 0;
162 handle
.ha_fid
.xfs_fid_gen
= ip
->i_d
.di_gen
;
163 handle
.ha_fid
.xfs_fid_ino
= ip
->i_ino
;
165 xfs_iunlock_map_shared(ip
, lock_mode
);
167 hsize
= XFS_HSIZE(handle
);
170 /* now copy our handle into the user buffer & write out the size */
171 if (copy_to_user(hreq
.ohandle
, &handle
, hsize
) ||
172 copy_to_user(hreq
.ohandlen
, &hsize
, sizeof(__s32
))) {
174 return -XFS_ERROR(EFAULT
);
183 * Convert userspace handle data into vnode (and inode).
184 * We [ab]use the fact that all the fsop_handlereq ioctl calls
185 * have a data structure argument whose first component is always
186 * a xfs_fsop_handlereq_t, so we can cast to and from this type.
187 * This allows us to optimise the copy_from_user calls and gives
188 * a handy, shared routine.
190 * If no error, caller must always VN_RELE the returned vp.
193 xfs_vget_fsop_handlereq(
195 struct inode
*parinode
, /* parent inode pointer */
196 xfs_fsop_handlereq_t
*hreq
,
198 struct inode
**inode
)
203 xfs_handle_t
*handlep
;
206 struct inode
*inodep
;
213 * Only allow handle opens under a directory.
215 if (!S_ISDIR(parinode
->i_mode
))
216 return XFS_ERROR(ENOTDIR
);
218 hanp
= hreq
->ihandle
;
219 hlen
= hreq
->ihandlen
;
222 if (hlen
< sizeof(handlep
->ha_fsid
) || hlen
> sizeof(*handlep
))
223 return XFS_ERROR(EINVAL
);
224 if (copy_from_user(handlep
, hanp
, hlen
))
225 return XFS_ERROR(EFAULT
);
226 if (hlen
< sizeof(*handlep
))
227 memset(((char *)handlep
) + hlen
, 0, sizeof(*handlep
) - hlen
);
228 if (hlen
> sizeof(handlep
->ha_fsid
)) {
229 if (handlep
->ha_fid
.xfs_fid_len
!=
230 (hlen
- sizeof(handlep
->ha_fsid
)
231 - sizeof(handlep
->ha_fid
.xfs_fid_len
))
232 || handlep
->ha_fid
.xfs_fid_pad
)
233 return XFS_ERROR(EINVAL
);
237 * Crack the handle, obtain the inode # & generation #
239 xfid
= (struct xfs_fid
*)&handlep
->ha_fid
;
240 if (xfid
->xfs_fid_len
== sizeof(*xfid
) - sizeof(xfid
->xfs_fid_len
)) {
241 ino
= xfid
->xfs_fid_ino
;
242 igen
= xfid
->xfs_fid_gen
;
244 return XFS_ERROR(EINVAL
);
248 * Get the XFS inode, building a vnode to go with it.
250 error
= xfs_iget(mp
, NULL
, ino
, 0, XFS_ILOCK_SHARED
, &ip
, 0);
254 return XFS_ERROR(EIO
);
255 if (ip
->i_d
.di_mode
== 0 || ip
->i_d
.di_gen
!= igen
) {
256 xfs_iput_new(ip
, XFS_ILOCK_SHARED
);
257 return XFS_ERROR(ENOENT
);
261 inodep
= LINVFS_GET_IP(vpp
);
262 xfs_iunlock(ip
, XFS_ILOCK_SHARED
);
273 struct file
*parfilp
,
274 struct inode
*parinode
)
281 struct dentry
*dentry
;
283 xfs_fsop_handlereq_t hreq
;
285 if (!capable(CAP_SYS_ADMIN
))
286 return -XFS_ERROR(EPERM
);
287 if (copy_from_user(&hreq
, arg
, sizeof(xfs_fsop_handlereq_t
)))
288 return -XFS_ERROR(EFAULT
);
290 error
= xfs_vget_fsop_handlereq(mp
, parinode
, &hreq
, &vp
, &inode
);
294 /* Restrict xfs_open_by_handle to directories & regular files. */
295 if (!(S_ISREG(inode
->i_mode
) || S_ISDIR(inode
->i_mode
))) {
297 return -XFS_ERROR(EINVAL
);
300 #if BITS_PER_LONG != 32
301 hreq
.oflags
|= O_LARGEFILE
;
303 /* Put open permission in namei format. */
304 permflag
= hreq
.oflags
;
305 if ((permflag
+1) & O_ACCMODE
)
307 if (permflag
& O_TRUNC
)
310 if ((!(permflag
& O_APPEND
) || (permflag
& O_TRUNC
)) &&
311 (permflag
& FMODE_WRITE
) && IS_APPEND(inode
)) {
313 return -XFS_ERROR(EPERM
);
316 if ((permflag
& FMODE_WRITE
) && IS_IMMUTABLE(inode
)) {
318 return -XFS_ERROR(EACCES
);
321 /* Can't write directories. */
322 if ( S_ISDIR(inode
->i_mode
) && (permflag
& FMODE_WRITE
)) {
324 return -XFS_ERROR(EISDIR
);
327 if ((new_fd
= get_unused_fd()) < 0) {
332 dentry
= d_alloc_anon(inode
);
333 if (dentry
== NULL
) {
335 put_unused_fd(new_fd
);
336 return -XFS_ERROR(ENOMEM
);
339 /* Ensure umount returns EBUSY on umounts while this file is open. */
340 mntget(parfilp
->f_vfsmnt
);
342 /* Create file pointer. */
343 filp
= dentry_open(dentry
, parfilp
->f_vfsmnt
, hreq
.oflags
);
345 put_unused_fd(new_fd
);
346 return -XFS_ERROR(-PTR_ERR(filp
));
348 if (inode
->i_mode
& S_IFREG
)
349 filp
->f_op
= &linvfs_invis_file_operations
;
351 fd_install(new_fd
, filp
);
356 xfs_readlink_by_handle(
359 struct file
*parfilp
,
360 struct inode
*parinode
)
366 xfs_fsop_handlereq_t hreq
;
370 if (!capable(CAP_SYS_ADMIN
))
371 return -XFS_ERROR(EPERM
);
372 if (copy_from_user(&hreq
, arg
, sizeof(xfs_fsop_handlereq_t
)))
373 return -XFS_ERROR(EFAULT
);
375 error
= xfs_vget_fsop_handlereq(mp
, parinode
, &hreq
, &vp
, &inode
);
379 /* Restrict this handle operation to symlinks only. */
380 if (!S_ISLNK(inode
->i_mode
)) {
382 return -XFS_ERROR(EINVAL
);
385 if (copy_from_user(&olen
, hreq
.ohandlen
, sizeof(__u32
))) {
387 return -XFS_ERROR(EFAULT
);
390 aiov
.iov_base
= hreq
.ohandle
;
392 auio
.uio_iov
= &aiov
;
395 auio
.uio_segflg
= UIO_USERSPACE
;
396 auio
.uio_resid
= olen
;
398 VOP_READLINK(vp
, &auio
, IO_INVIS
, NULL
, error
);
401 return (olen
- auio
.uio_resid
);
405 xfs_fssetdm_by_handle(
408 struct file
*parfilp
,
409 struct inode
*parinode
)
412 struct fsdmidata fsd
;
413 xfs_fsop_setdm_handlereq_t dmhreq
;
418 if (!capable(CAP_MKNOD
))
419 return -XFS_ERROR(EPERM
);
420 if (copy_from_user(&dmhreq
, arg
, sizeof(xfs_fsop_setdm_handlereq_t
)))
421 return -XFS_ERROR(EFAULT
);
423 error
= xfs_vget_fsop_handlereq(mp
, parinode
, &dmhreq
.hreq
, &vp
, &inode
);
427 if (IS_IMMUTABLE(inode
) || IS_APPEND(inode
)) {
429 return -XFS_ERROR(EPERM
);
432 if (copy_from_user(&fsd
, dmhreq
.data
, sizeof(fsd
))) {
434 return -XFS_ERROR(EFAULT
);
437 bdp
= bhv_base_unlocked(VN_BHV_HEAD(vp
));
438 error
= xfs_set_dmattrs(bdp
, fsd
.fsd_dmevmask
, fsd
.fsd_dmstate
, NULL
);
447 xfs_attrlist_by_handle(
450 struct file
*parfilp
,
451 struct inode
*parinode
)
454 attrlist_cursor_kern_t
*cursor
;
455 xfs_fsop_attrlist_handlereq_t al_hreq
;
460 if (!capable(CAP_SYS_ADMIN
))
461 return -XFS_ERROR(EPERM
);
462 if (copy_from_user(&al_hreq
, arg
, sizeof(xfs_fsop_attrlist_handlereq_t
)))
463 return -XFS_ERROR(EFAULT
);
464 if (al_hreq
.buflen
> XATTR_LIST_MAX
)
465 return -XFS_ERROR(EINVAL
);
467 error
= xfs_vget_fsop_handlereq(mp
, parinode
, &al_hreq
.hreq
,
472 kbuf
= kmalloc(al_hreq
.buflen
, GFP_KERNEL
);
476 cursor
= (attrlist_cursor_kern_t
*)&al_hreq
.pos
;
477 VOP_ATTR_LIST(vp
, kbuf
, al_hreq
.buflen
, al_hreq
.flags
,
478 cursor
, NULL
, error
);
482 if (copy_to_user(al_hreq
.buffer
, kbuf
, al_hreq
.buflen
))
494 xfs_attrmulti_attr_get(
504 if (*len
> XATTR_SIZE_MAX
)
506 kbuf
= kmalloc(*len
, GFP_KERNEL
);
510 VOP_ATTR_GET(vp
, name
, kbuf
, len
, flags
, NULL
, error
);
514 if (copy_to_user(ubuf
, kbuf
, *len
))
523 xfs_attrmulti_attr_set(
526 const char __user
*ubuf
,
533 if (IS_IMMUTABLE(&vp
->v_inode
) || IS_APPEND(&vp
->v_inode
))
535 if (len
> XATTR_SIZE_MAX
)
538 kbuf
= kmalloc(len
, GFP_KERNEL
);
542 if (copy_from_user(kbuf
, ubuf
, len
))
545 VOP_ATTR_SET(vp
, name
, kbuf
, len
, flags
, NULL
, error
);
553 xfs_attrmulti_attr_remove(
560 if (IS_IMMUTABLE(&vp
->v_inode
) || IS_APPEND(&vp
->v_inode
))
563 VOP_ATTR_REMOVE(vp
, name
, flags
, NULL
, error
);
568 xfs_attrmulti_by_handle(
571 struct file
*parfilp
,
572 struct inode
*parinode
)
575 xfs_attr_multiop_t
*ops
;
576 xfs_fsop_attrmulti_handlereq_t am_hreq
;
579 unsigned int i
, size
;
582 if (!capable(CAP_SYS_ADMIN
))
583 return -XFS_ERROR(EPERM
);
584 if (copy_from_user(&am_hreq
, arg
, sizeof(xfs_fsop_attrmulti_handlereq_t
)))
585 return -XFS_ERROR(EFAULT
);
587 error
= xfs_vget_fsop_handlereq(mp
, parinode
, &am_hreq
.hreq
, &vp
, &inode
);
592 size
= am_hreq
.opcount
* sizeof(attr_multiop_t
);
593 if (!size
|| size
> 16 * PAGE_SIZE
)
597 ops
= kmalloc(size
, GFP_KERNEL
);
602 if (copy_from_user(ops
, am_hreq
.ops
, size
))
605 attr_name
= kmalloc(MAXNAMELEN
, GFP_KERNEL
);
611 for (i
= 0; i
< am_hreq
.opcount
; i
++) {
612 ops
[i
].am_error
= strncpy_from_user(attr_name
,
613 ops
[i
].am_attrname
, MAXNAMELEN
);
614 if (ops
[i
].am_error
== 0 || ops
[i
].am_error
== MAXNAMELEN
)
616 if (ops
[i
].am_error
< 0)
619 switch (ops
[i
].am_opcode
) {
621 ops
[i
].am_error
= xfs_attrmulti_attr_get(vp
,
622 attr_name
, ops
[i
].am_attrvalue
,
623 &ops
[i
].am_length
, ops
[i
].am_flags
);
626 ops
[i
].am_error
= xfs_attrmulti_attr_set(vp
,
627 attr_name
, ops
[i
].am_attrvalue
,
628 ops
[i
].am_length
, ops
[i
].am_flags
);
631 ops
[i
].am_error
= xfs_attrmulti_attr_remove(vp
,
632 attr_name
, ops
[i
].am_flags
);
635 ops
[i
].am_error
= EINVAL
;
639 if (copy_to_user(am_hreq
.ops
, ops
, size
))
640 error
= XFS_ERROR(EFAULT
);
651 /* prototypes for a few of the stack-hungry cases that have
652 * their own functions. Functions are defined after their use
653 * so gcc doesn't get fancy and inline them with -03 */
671 xfs_ioc_fsgeometry_v1(
715 vp
= LINVFS_GET_VP(inode
);
717 vn_trace_entry(vp
, "xfs_ioctl", (inst_t
*)__return_address
);
719 ip
= XFS_BHVTOI(bdp
);
724 case XFS_IOC_ALLOCSP
:
727 case XFS_IOC_UNRESVSP
:
728 case XFS_IOC_ALLOCSP64
:
729 case XFS_IOC_FREESP64
:
730 case XFS_IOC_RESVSP64
:
731 case XFS_IOC_UNRESVSP64
:
733 * Only allow the sys admin to reserve space unless
734 * unwritten extents are enabled.
736 if (!XFS_SB_VERSION_HASEXTFLGBIT(&mp
->m_sb
) &&
737 !capable(CAP_SYS_ADMIN
))
740 return xfs_ioc_space(bdp
, vp
, filp
, ioflags
, cmd
, arg
);
742 case XFS_IOC_DIOINFO
: {
744 xfs_buftarg_t
*target
=
745 (ip
->i_d
.di_flags
& XFS_DIFLAG_REALTIME
) ?
746 mp
->m_rtdev_targp
: mp
->m_ddev_targp
;
748 da
.d_mem
= da
.d_miniosz
= 1 << target
->pbr_sshift
;
749 /* The size dio will do in one go */
750 da
.d_maxiosz
= 64 * PAGE_CACHE_SIZE
;
752 if (copy_to_user(arg
, &da
, sizeof(da
)))
753 return -XFS_ERROR(EFAULT
);
757 case XFS_IOC_FSBULKSTAT_SINGLE
:
758 case XFS_IOC_FSBULKSTAT
:
759 case XFS_IOC_FSINUMBERS
:
760 return xfs_ioc_bulkstat(mp
, cmd
, arg
);
762 case XFS_IOC_FSGEOMETRY_V1
:
763 return xfs_ioc_fsgeometry_v1(mp
, arg
);
765 case XFS_IOC_FSGEOMETRY
:
766 return xfs_ioc_fsgeometry(mp
, arg
);
768 case XFS_IOC_GETVERSION
:
769 case XFS_IOC_GETXFLAGS
:
770 case XFS_IOC_SETXFLAGS
:
771 case XFS_IOC_FSGETXATTR
:
772 case XFS_IOC_FSSETXATTR
:
773 case XFS_IOC_FSGETXATTRA
:
774 return xfs_ioc_xattr(vp
, ip
, filp
, cmd
, arg
);
776 case XFS_IOC_FSSETDM
: {
777 struct fsdmidata dmi
;
779 if (copy_from_user(&dmi
, arg
, sizeof(dmi
)))
780 return -XFS_ERROR(EFAULT
);
782 error
= xfs_set_dmattrs(bdp
, dmi
.fsd_dmevmask
, dmi
.fsd_dmstate
,
787 case XFS_IOC_GETBMAP
:
788 case XFS_IOC_GETBMAPA
:
789 return xfs_ioc_getbmap(bdp
, filp
, ioflags
, cmd
, arg
);
791 case XFS_IOC_GETBMAPX
:
792 return xfs_ioc_getbmapx(bdp
, arg
);
794 case XFS_IOC_FD_TO_HANDLE
:
795 case XFS_IOC_PATH_TO_HANDLE
:
796 case XFS_IOC_PATH_TO_FSHANDLE
:
797 return xfs_find_handle(cmd
, arg
);
799 case XFS_IOC_OPEN_BY_HANDLE
:
800 return xfs_open_by_handle(mp
, arg
, filp
, inode
);
802 case XFS_IOC_FSSETDM_BY_HANDLE
:
803 return xfs_fssetdm_by_handle(mp
, arg
, filp
, inode
);
805 case XFS_IOC_READLINK_BY_HANDLE
:
806 return xfs_readlink_by_handle(mp
, arg
, filp
, inode
);
808 case XFS_IOC_ATTRLIST_BY_HANDLE
:
809 return xfs_attrlist_by_handle(mp
, arg
, filp
, inode
);
811 case XFS_IOC_ATTRMULTI_BY_HANDLE
:
812 return xfs_attrmulti_by_handle(mp
, arg
, filp
, inode
);
814 case XFS_IOC_SWAPEXT
: {
815 error
= xfs_swapext((struct xfs_swapext __user
*)arg
);
819 case XFS_IOC_FSCOUNTS
: {
820 xfs_fsop_counts_t out
;
822 error
= xfs_fs_counts(mp
, &out
);
826 if (copy_to_user(arg
, &out
, sizeof(out
)))
827 return -XFS_ERROR(EFAULT
);
831 case XFS_IOC_SET_RESBLKS
: {
832 xfs_fsop_resblks_t inout
;
835 if (!capable(CAP_SYS_ADMIN
))
838 if (copy_from_user(&inout
, arg
, sizeof(inout
)))
839 return -XFS_ERROR(EFAULT
);
841 /* input parameter is passed in resblks field of structure */
843 error
= xfs_reserve_blocks(mp
, &in
, &inout
);
847 if (copy_to_user(arg
, &inout
, sizeof(inout
)))
848 return -XFS_ERROR(EFAULT
);
852 case XFS_IOC_GET_RESBLKS
: {
853 xfs_fsop_resblks_t out
;
855 if (!capable(CAP_SYS_ADMIN
))
858 error
= xfs_reserve_blocks(mp
, NULL
, &out
);
862 if (copy_to_user(arg
, &out
, sizeof(out
)))
863 return -XFS_ERROR(EFAULT
);
868 case XFS_IOC_FSGROWFSDATA
: {
869 xfs_growfs_data_t in
;
871 if (!capable(CAP_SYS_ADMIN
))
874 if (copy_from_user(&in
, arg
, sizeof(in
)))
875 return -XFS_ERROR(EFAULT
);
877 error
= xfs_growfs_data(mp
, &in
);
881 case XFS_IOC_FSGROWFSLOG
: {
884 if (!capable(CAP_SYS_ADMIN
))
887 if (copy_from_user(&in
, arg
, sizeof(in
)))
888 return -XFS_ERROR(EFAULT
);
890 error
= xfs_growfs_log(mp
, &in
);
894 case XFS_IOC_FSGROWFSRT
: {
897 if (!capable(CAP_SYS_ADMIN
))
900 if (copy_from_user(&in
, arg
, sizeof(in
)))
901 return -XFS_ERROR(EFAULT
);
903 error
= xfs_growfs_rt(mp
, &in
);
908 if (!capable(CAP_SYS_ADMIN
))
911 if (inode
->i_sb
->s_frozen
== SB_UNFROZEN
)
912 freeze_bdev(inode
->i_sb
->s_bdev
);
916 if (!capable(CAP_SYS_ADMIN
))
918 if (inode
->i_sb
->s_frozen
!= SB_UNFROZEN
)
919 thaw_bdev(inode
->i_sb
->s_bdev
, inode
->i_sb
);
922 case XFS_IOC_GOINGDOWN
: {
925 if (!capable(CAP_SYS_ADMIN
))
928 if (get_user(in
, (__uint32_t __user
*)arg
))
929 return -XFS_ERROR(EFAULT
);
931 error
= xfs_fs_goingdown(mp
, in
);
935 case XFS_IOC_ERROR_INJECTION
: {
936 xfs_error_injection_t in
;
938 if (!capable(CAP_SYS_ADMIN
))
941 if (copy_from_user(&in
, arg
, sizeof(in
)))
942 return -XFS_ERROR(EFAULT
);
944 error
= xfs_errortag_add(in
.errtag
, mp
);
948 case XFS_IOC_ERROR_CLEARALL
:
949 if (!capable(CAP_SYS_ADMIN
))
952 error
= xfs_errortag_clearall(mp
);
973 if (vp
->v_inode
.i_flags
& (S_IMMUTABLE
|S_APPEND
))
974 return -XFS_ERROR(EPERM
);
976 if (!(filp
->f_mode
& FMODE_WRITE
))
977 return -XFS_ERROR(EBADF
);
980 return -XFS_ERROR(EINVAL
);
982 if (copy_from_user(&bf
, arg
, sizeof(bf
)))
983 return -XFS_ERROR(EFAULT
);
985 if (filp
->f_flags
& (O_NDELAY
|O_NONBLOCK
))
986 attr_flags
|= ATTR_NONBLOCK
;
987 if (ioflags
& IO_INVIS
)
988 attr_flags
|= ATTR_DMI
;
990 error
= xfs_change_file_space(bdp
, cmd
, &bf
, filp
->f_pos
,
1001 xfs_fsop_bulkreq_t bulkreq
;
1002 int count
; /* # of records returned */
1003 xfs_ino_t inlast
; /* last inode number */
1007 /* done = 1 if there are more stats to get and if bulkstat */
1008 /* should be called again (unused here, but used in dmapi) */
1010 if (!capable(CAP_SYS_ADMIN
))
1013 if (XFS_FORCED_SHUTDOWN(mp
))
1014 return -XFS_ERROR(EIO
);
1016 if (copy_from_user(&bulkreq
, arg
, sizeof(xfs_fsop_bulkreq_t
)))
1017 return -XFS_ERROR(EFAULT
);
1019 if (copy_from_user(&inlast
, bulkreq
.lastip
, sizeof(__s64
)))
1020 return -XFS_ERROR(EFAULT
);
1022 if ((count
= bulkreq
.icount
) <= 0)
1023 return -XFS_ERROR(EINVAL
);
1025 if (cmd
== XFS_IOC_FSINUMBERS
)
1026 error
= xfs_inumbers(mp
, &inlast
, &count
,
1028 else if (cmd
== XFS_IOC_FSBULKSTAT_SINGLE
)
1029 error
= xfs_bulkstat_single(mp
, &inlast
,
1030 bulkreq
.ubuffer
, &done
);
1031 else { /* XFS_IOC_FSBULKSTAT */
1032 if (count
== 1 && inlast
!= 0) {
1034 error
= xfs_bulkstat_single(mp
, &inlast
,
1035 bulkreq
.ubuffer
, &done
);
1037 error
= xfs_bulkstat(mp
, &inlast
, &count
,
1038 (bulkstat_one_pf
)xfs_bulkstat_one
, NULL
,
1039 sizeof(xfs_bstat_t
), bulkreq
.ubuffer
,
1040 BULKSTAT_FG_QUICK
, &done
);
1047 if (bulkreq
.ocount
!= NULL
) {
1048 if (copy_to_user(bulkreq
.lastip
, &inlast
,
1050 return -XFS_ERROR(EFAULT
);
1052 if (copy_to_user(bulkreq
.ocount
, &count
, sizeof(count
)))
1053 return -XFS_ERROR(EFAULT
);
1060 xfs_ioc_fsgeometry_v1(
1064 xfs_fsop_geom_v1_t fsgeo
;
1067 error
= xfs_fs_geometry(mp
, (xfs_fsop_geom_t
*)&fsgeo
, 3);
1071 if (copy_to_user(arg
, &fsgeo
, sizeof(fsgeo
)))
1072 return -XFS_ERROR(EFAULT
);
1081 xfs_fsop_geom_t fsgeo
;
1084 error
= xfs_fs_geometry(mp
, &fsgeo
, 4);
1088 if (copy_to_user(arg
, &fsgeo
, sizeof(fsgeo
)))
1089 return -XFS_ERROR(EFAULT
);
1094 * Linux extended inode flags interface.
1096 #define LINUX_XFLAG_SYNC 0x00000008 /* Synchronous updates */
1097 #define LINUX_XFLAG_IMMUTABLE 0x00000010 /* Immutable file */
1098 #define LINUX_XFLAG_APPEND 0x00000020 /* writes to file may only append */
1099 #define LINUX_XFLAG_NODUMP 0x00000040 /* do not dump file */
1100 #define LINUX_XFLAG_NOATIME 0x00000080 /* do not update atime */
1103 xfs_merge_ioc_xflags(
1107 unsigned int xflags
= start
;
1109 if (flags
& LINUX_XFLAG_IMMUTABLE
)
1110 xflags
|= XFS_XFLAG_IMMUTABLE
;
1112 xflags
&= ~XFS_XFLAG_IMMUTABLE
;
1113 if (flags
& LINUX_XFLAG_APPEND
)
1114 xflags
|= XFS_XFLAG_APPEND
;
1116 xflags
&= ~XFS_XFLAG_APPEND
;
1117 if (flags
& LINUX_XFLAG_SYNC
)
1118 xflags
|= XFS_XFLAG_SYNC
;
1120 xflags
&= ~XFS_XFLAG_SYNC
;
1121 if (flags
& LINUX_XFLAG_NOATIME
)
1122 xflags
|= XFS_XFLAG_NOATIME
;
1124 xflags
&= ~XFS_XFLAG_NOATIME
;
1125 if (flags
& LINUX_XFLAG_NODUMP
)
1126 xflags
|= XFS_XFLAG_NODUMP
;
1128 xflags
&= ~XFS_XFLAG_NODUMP
;
1135 __uint16_t di_flags
)
1137 unsigned int flags
= 0;
1139 if (di_flags
& XFS_DIFLAG_IMMUTABLE
)
1140 flags
|= LINUX_XFLAG_IMMUTABLE
;
1141 if (di_flags
& XFS_DIFLAG_APPEND
)
1142 flags
|= LINUX_XFLAG_APPEND
;
1143 if (di_flags
& XFS_DIFLAG_SYNC
)
1144 flags
|= LINUX_XFLAG_SYNC
;
1145 if (di_flags
& XFS_DIFLAG_NOATIME
)
1146 flags
|= LINUX_XFLAG_NOATIME
;
1147 if (di_flags
& XFS_DIFLAG_NODUMP
)
1148 flags
|= LINUX_XFLAG_NODUMP
;
1167 case XFS_IOC_FSGETXATTR
: {
1168 va
.va_mask
= XFS_AT_XFLAGS
| XFS_AT_EXTSIZE
| \
1169 XFS_AT_NEXTENTS
| XFS_AT_PROJID
;
1170 VOP_GETATTR(vp
, &va
, 0, NULL
, error
);
1174 fa
.fsx_xflags
= va
.va_xflags
;
1175 fa
.fsx_extsize
= va
.va_extsize
;
1176 fa
.fsx_nextents
= va
.va_nextents
;
1177 fa
.fsx_projid
= va
.va_projid
;
1179 if (copy_to_user(arg
, &fa
, sizeof(fa
)))
1180 return -XFS_ERROR(EFAULT
);
1184 case XFS_IOC_FSSETXATTR
: {
1185 if (copy_from_user(&fa
, arg
, sizeof(fa
)))
1186 return -XFS_ERROR(EFAULT
);
1189 if (filp
->f_flags
& (O_NDELAY
|O_NONBLOCK
))
1190 attr_flags
|= ATTR_NONBLOCK
;
1192 va
.va_mask
= XFS_AT_XFLAGS
| XFS_AT_EXTSIZE
| XFS_AT_PROJID
;
1193 va
.va_xflags
= fa
.fsx_xflags
;
1194 va
.va_extsize
= fa
.fsx_extsize
;
1195 va
.va_projid
= fa
.fsx_projid
;
1197 VOP_SETATTR(vp
, &va
, attr_flags
, NULL
, error
);
1199 vn_revalidate(vp
); /* update Linux inode flags */
1203 case XFS_IOC_FSGETXATTRA
: {
1204 va
.va_mask
= XFS_AT_XFLAGS
| XFS_AT_EXTSIZE
| \
1205 XFS_AT_ANEXTENTS
| XFS_AT_PROJID
;
1206 VOP_GETATTR(vp
, &va
, 0, NULL
, error
);
1210 fa
.fsx_xflags
= va
.va_xflags
;
1211 fa
.fsx_extsize
= va
.va_extsize
;
1212 fa
.fsx_nextents
= va
.va_anextents
;
1213 fa
.fsx_projid
= va
.va_projid
;
1215 if (copy_to_user(arg
, &fa
, sizeof(fa
)))
1216 return -XFS_ERROR(EFAULT
);
1220 case XFS_IOC_GETXFLAGS
: {
1221 flags
= xfs_di2lxflags(ip
->i_d
.di_flags
);
1222 if (copy_to_user(arg
, &flags
, sizeof(flags
)))
1223 return -XFS_ERROR(EFAULT
);
1227 case XFS_IOC_SETXFLAGS
: {
1228 if (copy_from_user(&flags
, arg
, sizeof(flags
)))
1229 return -XFS_ERROR(EFAULT
);
1231 if (flags
& ~(LINUX_XFLAG_IMMUTABLE
| LINUX_XFLAG_APPEND
| \
1232 LINUX_XFLAG_NOATIME
| LINUX_XFLAG_NODUMP
| \
1234 return -XFS_ERROR(EOPNOTSUPP
);
1237 if (filp
->f_flags
& (O_NDELAY
|O_NONBLOCK
))
1238 attr_flags
|= ATTR_NONBLOCK
;
1240 va
.va_mask
= XFS_AT_XFLAGS
;
1241 va
.va_xflags
= xfs_merge_ioc_xflags(flags
,
1244 VOP_SETATTR(vp
, &va
, attr_flags
, NULL
, error
);
1246 vn_revalidate(vp
); /* update Linux inode flags */
1250 case XFS_IOC_GETVERSION
: {
1251 flags
= LINVFS_GET_IP(vp
)->i_generation
;
1252 if (copy_to_user(arg
, &flags
, sizeof(flags
)))
1253 return -XFS_ERROR(EFAULT
);
1274 if (copy_from_user(&bm
, arg
, sizeof(bm
)))
1275 return -XFS_ERROR(EFAULT
);
1277 if (bm
.bmv_count
< 2)
1278 return -XFS_ERROR(EINVAL
);
1280 iflags
= (cmd
== XFS_IOC_GETBMAPA
? BMV_IF_ATTRFORK
: 0);
1281 if (ioflags
& IO_INVIS
)
1282 iflags
|= BMV_IF_NO_DMAPI_READ
;
1284 error
= xfs_getbmap(bdp
, &bm
, (struct getbmap __user
*)arg
+1, iflags
);
1288 if (copy_to_user(arg
, &bm
, sizeof(bm
)))
1289 return -XFS_ERROR(EFAULT
);
1298 struct getbmapx bmx
;
1303 if (copy_from_user(&bmx
, arg
, sizeof(bmx
)))
1304 return -XFS_ERROR(EFAULT
);
1306 if (bmx
.bmv_count
< 2)
1307 return -XFS_ERROR(EINVAL
);
1310 * Map input getbmapx structure to a getbmap
1311 * structure for xfs_getbmap.
1313 GETBMAP_CONVERT(bmx
, bm
);
1315 iflags
= bmx
.bmv_iflags
;
1317 if (iflags
& (~BMV_IF_VALID
))
1318 return -XFS_ERROR(EINVAL
);
1320 iflags
|= BMV_IF_EXTENDED
;
1322 error
= xfs_getbmap(bdp
, &bm
, (struct getbmapx __user
*)arg
+1, iflags
);
1326 GETBMAP_CONVERT(bm
, bmx
);
1328 if (copy_to_user(arg
, &bmx
, sizeof(bmx
)))
1329 return -XFS_ERROR(EFAULT
);