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"
48 #include "xfs_buf_item.h"
49 #include "xfs_utils.h"
50 #include "xfs_dfrag.h"
51 #include "xfs_fsops.h"
53 #include <linux/capability.h>
54 #include <linux/dcache.h>
55 #include <linux/mount.h>
56 #include <linux/namei.h>
57 #include <linux/pagemap.h>
60 * xfs_find_handle maps from userspace xfs_fsop_handlereq structure to
61 * a file or fs handle.
63 * XFS_IOC_PATH_TO_FSHANDLE
64 * returns fs handle for a mount point or path within that mount point
65 * XFS_IOC_FD_TO_HANDLE
66 * returns full handle for a FD opened in user space
67 * XFS_IOC_PATH_TO_HANDLE
68 * returns full handle for a path
77 xfs_fsop_handlereq_t hreq
;
81 if (copy_from_user(&hreq
, arg
, sizeof(hreq
)))
82 return -XFS_ERROR(EFAULT
);
84 memset((char *)&handle
, 0, sizeof(handle
));
87 case XFS_IOC_PATH_TO_FSHANDLE
:
88 case XFS_IOC_PATH_TO_HANDLE
: {
92 error
= user_path_walk_link((const char __user
*)hreq
.path
, &nd
);
97 ASSERT(nd
.dentry
->d_inode
);
98 inode
= igrab(nd
.dentry
->d_inode
);
103 case XFS_IOC_FD_TO_HANDLE
: {
106 file
= fget(hreq
.fd
);
110 ASSERT(file
->f_path
.dentry
);
111 ASSERT(file
->f_path
.dentry
->d_inode
);
112 inode
= igrab(file
->f_path
.dentry
->d_inode
);
119 return -XFS_ERROR(EINVAL
);
122 if (inode
->i_sb
->s_magic
!= XFS_SB_MAGIC
) {
123 /* we're not in XFS anymore, Toto */
125 return -XFS_ERROR(EINVAL
);
128 switch (inode
->i_mode
& S_IFMT
) {
135 return -XFS_ERROR(EBADF
);
138 /* we need the vnode */
139 vp
= vn_from_inode(inode
);
141 /* now we can grab the fsid */
142 memcpy(&handle
.ha_fsid
, vp
->v_vfsp
->vfs_altfsid
, sizeof(xfs_fsid_t
));
143 hsize
= sizeof(xfs_fsid_t
);
145 if (cmd
!= XFS_IOC_PATH_TO_FSHANDLE
) {
149 /* need to get access to the xfs_inode to read the generation */
152 lock_mode
= xfs_ilock_map_shared(ip
);
154 /* fill in fid section of handle from inode */
155 handle
.ha_fid
.xfs_fid_len
= sizeof(xfs_fid_t
) -
156 sizeof(handle
.ha_fid
.xfs_fid_len
);
157 handle
.ha_fid
.xfs_fid_pad
= 0;
158 handle
.ha_fid
.xfs_fid_gen
= ip
->i_d
.di_gen
;
159 handle
.ha_fid
.xfs_fid_ino
= ip
->i_ino
;
161 xfs_iunlock_map_shared(ip
, lock_mode
);
163 hsize
= XFS_HSIZE(handle
);
166 /* now copy our handle into the user buffer & write out the size */
167 if (copy_to_user(hreq
.ohandle
, &handle
, hsize
) ||
168 copy_to_user(hreq
.ohandlen
, &hsize
, sizeof(__s32
))) {
170 return -XFS_ERROR(EFAULT
);
179 * Convert userspace handle data into vnode (and inode).
180 * We [ab]use the fact that all the fsop_handlereq ioctl calls
181 * have a data structure argument whose first component is always
182 * a xfs_fsop_handlereq_t, so we can cast to and from this type.
183 * This allows us to optimise the copy_from_user calls and gives
184 * a handy, shared routine.
186 * If no error, caller must always VN_RELE the returned vp.
189 xfs_vget_fsop_handlereq(
191 struct inode
*parinode
, /* parent inode pointer */
192 xfs_fsop_handlereq_t
*hreq
,
194 struct inode
**inode
)
199 xfs_handle_t
*handlep
;
202 struct inode
*inodep
;
209 * Only allow handle opens under a directory.
211 if (!S_ISDIR(parinode
->i_mode
))
212 return XFS_ERROR(ENOTDIR
);
214 hanp
= hreq
->ihandle
;
215 hlen
= hreq
->ihandlen
;
218 if (hlen
< sizeof(handlep
->ha_fsid
) || hlen
> sizeof(*handlep
))
219 return XFS_ERROR(EINVAL
);
220 if (copy_from_user(handlep
, hanp
, hlen
))
221 return XFS_ERROR(EFAULT
);
222 if (hlen
< sizeof(*handlep
))
223 memset(((char *)handlep
) + hlen
, 0, sizeof(*handlep
) - hlen
);
224 if (hlen
> sizeof(handlep
->ha_fsid
)) {
225 if (handlep
->ha_fid
.xfs_fid_len
!=
226 (hlen
- sizeof(handlep
->ha_fsid
)
227 - sizeof(handlep
->ha_fid
.xfs_fid_len
))
228 || handlep
->ha_fid
.xfs_fid_pad
)
229 return XFS_ERROR(EINVAL
);
233 * Crack the handle, obtain the inode # & generation #
235 xfid
= (struct xfs_fid
*)&handlep
->ha_fid
;
236 if (xfid
->xfs_fid_len
== sizeof(*xfid
) - sizeof(xfid
->xfs_fid_len
)) {
237 ino
= xfid
->xfs_fid_ino
;
238 igen
= xfid
->xfs_fid_gen
;
240 return XFS_ERROR(EINVAL
);
244 * Get the XFS inode, building a vnode to go with it.
246 error
= xfs_iget(mp
, NULL
, ino
, 0, XFS_ILOCK_SHARED
, &ip
, 0);
250 return XFS_ERROR(EIO
);
251 if (ip
->i_d
.di_mode
== 0 || ip
->i_d
.di_gen
!= igen
) {
252 xfs_iput_new(ip
, XFS_ILOCK_SHARED
);
253 return XFS_ERROR(ENOENT
);
257 inodep
= vn_to_inode(vpp
);
258 xfs_iunlock(ip
, XFS_ILOCK_SHARED
);
269 struct file
*parfilp
,
270 struct inode
*parinode
)
277 struct dentry
*dentry
;
279 xfs_fsop_handlereq_t hreq
;
281 if (!capable(CAP_SYS_ADMIN
))
282 return -XFS_ERROR(EPERM
);
283 if (copy_from_user(&hreq
, arg
, sizeof(xfs_fsop_handlereq_t
)))
284 return -XFS_ERROR(EFAULT
);
286 error
= xfs_vget_fsop_handlereq(mp
, parinode
, &hreq
, &vp
, &inode
);
290 /* Restrict xfs_open_by_handle to directories & regular files. */
291 if (!(S_ISREG(inode
->i_mode
) || S_ISDIR(inode
->i_mode
))) {
293 return -XFS_ERROR(EINVAL
);
296 #if BITS_PER_LONG != 32
297 hreq
.oflags
|= O_LARGEFILE
;
299 /* Put open permission in namei format. */
300 permflag
= hreq
.oflags
;
301 if ((permflag
+1) & O_ACCMODE
)
303 if (permflag
& O_TRUNC
)
306 if ((!(permflag
& O_APPEND
) || (permflag
& O_TRUNC
)) &&
307 (permflag
& FMODE_WRITE
) && IS_APPEND(inode
)) {
309 return -XFS_ERROR(EPERM
);
312 if ((permflag
& FMODE_WRITE
) && IS_IMMUTABLE(inode
)) {
314 return -XFS_ERROR(EACCES
);
317 /* Can't write directories. */
318 if ( S_ISDIR(inode
->i_mode
) && (permflag
& FMODE_WRITE
)) {
320 return -XFS_ERROR(EISDIR
);
323 if ((new_fd
= get_unused_fd()) < 0) {
328 dentry
= d_alloc_anon(inode
);
329 if (dentry
== NULL
) {
331 put_unused_fd(new_fd
);
332 return -XFS_ERROR(ENOMEM
);
335 /* Ensure umount returns EBUSY on umounts while this file is open. */
336 mntget(parfilp
->f_path
.mnt
);
338 /* Create file pointer. */
339 filp
= dentry_open(dentry
, parfilp
->f_path
.mnt
, hreq
.oflags
);
341 put_unused_fd(new_fd
);
342 return -XFS_ERROR(-PTR_ERR(filp
));
344 if (inode
->i_mode
& S_IFREG
) {
345 /* invisible operation should not change atime */
346 filp
->f_flags
|= O_NOATIME
;
347 filp
->f_op
= &xfs_invis_file_operations
;
350 fd_install(new_fd
, filp
);
355 xfs_readlink_by_handle(
358 struct file
*parfilp
,
359 struct inode
*parinode
)
365 xfs_fsop_handlereq_t hreq
;
369 if (!capable(CAP_SYS_ADMIN
))
370 return -XFS_ERROR(EPERM
);
371 if (copy_from_user(&hreq
, arg
, sizeof(xfs_fsop_handlereq_t
)))
372 return -XFS_ERROR(EFAULT
);
374 error
= xfs_vget_fsop_handlereq(mp
, parinode
, &hreq
, &vp
, &inode
);
378 /* Restrict this handle operation to symlinks only. */
379 if (!S_ISLNK(inode
->i_mode
)) {
381 return -XFS_ERROR(EINVAL
);
384 if (copy_from_user(&olen
, hreq
.ohandlen
, sizeof(__u32
))) {
386 return -XFS_ERROR(EFAULT
);
389 aiov
.iov_base
= hreq
.ohandle
;
391 auio
.uio_iov
= (struct kvec
*)&aiov
;
394 auio
.uio_segflg
= UIO_USERSPACE
;
395 auio
.uio_resid
= olen
;
397 error
= bhv_vop_readlink(vp
, &auio
, IO_INVIS
, NULL
);
402 return (olen
- auio
.uio_resid
);
406 xfs_fssetdm_by_handle(
409 struct file
*parfilp
,
410 struct inode
*parinode
)
413 struct fsdmidata fsd
;
414 xfs_fsop_setdm_handlereq_t dmhreq
;
419 if (!capable(CAP_MKNOD
))
420 return -XFS_ERROR(EPERM
);
421 if (copy_from_user(&dmhreq
, arg
, sizeof(xfs_fsop_setdm_handlereq_t
)))
422 return -XFS_ERROR(EFAULT
);
424 error
= xfs_vget_fsop_handlereq(mp
, parinode
, &dmhreq
.hreq
, &vp
, &inode
);
428 if (IS_IMMUTABLE(inode
) || IS_APPEND(inode
)) {
430 return -XFS_ERROR(EPERM
);
433 if (copy_from_user(&fsd
, dmhreq
.data
, sizeof(fsd
))) {
435 return -XFS_ERROR(EFAULT
);
438 bdp
= bhv_base_unlocked(VN_BHV_HEAD(vp
));
439 error
= xfs_set_dmattrs(bdp
, fsd
.fsd_dmevmask
, fsd
.fsd_dmstate
, NULL
);
448 xfs_attrlist_by_handle(
451 struct file
*parfilp
,
452 struct inode
*parinode
)
455 attrlist_cursor_kern_t
*cursor
;
456 xfs_fsop_attrlist_handlereq_t al_hreq
;
461 if (!capable(CAP_SYS_ADMIN
))
462 return -XFS_ERROR(EPERM
);
463 if (copy_from_user(&al_hreq
, arg
, sizeof(xfs_fsop_attrlist_handlereq_t
)))
464 return -XFS_ERROR(EFAULT
);
465 if (al_hreq
.buflen
> XATTR_LIST_MAX
)
466 return -XFS_ERROR(EINVAL
);
468 error
= xfs_vget_fsop_handlereq(mp
, parinode
, &al_hreq
.hreq
,
473 kbuf
= kmalloc(al_hreq
.buflen
, GFP_KERNEL
);
477 cursor
= (attrlist_cursor_kern_t
*)&al_hreq
.pos
;
478 error
= bhv_vop_attr_list(vp
, kbuf
, al_hreq
.buflen
, al_hreq
.flags
,
483 if (copy_to_user(al_hreq
.buffer
, kbuf
, al_hreq
.buflen
))
495 xfs_attrmulti_attr_get(
505 if (*len
> XATTR_SIZE_MAX
)
507 kbuf
= kmalloc(*len
, GFP_KERNEL
);
511 error
= bhv_vop_attr_get(vp
, name
, kbuf
, len
, flags
, NULL
);
515 if (copy_to_user(ubuf
, kbuf
, *len
))
524 xfs_attrmulti_attr_set(
527 const char __user
*ubuf
,
534 if (IS_RDONLY(&vp
->v_inode
))
536 if (IS_IMMUTABLE(&vp
->v_inode
) || IS_APPEND(&vp
->v_inode
))
538 if (len
> XATTR_SIZE_MAX
)
541 kbuf
= kmalloc(len
, GFP_KERNEL
);
545 if (copy_from_user(kbuf
, ubuf
, len
))
548 error
= bhv_vop_attr_set(vp
, name
, kbuf
, len
, flags
, NULL
);
556 xfs_attrmulti_attr_remove(
561 if (IS_RDONLY(&vp
->v_inode
))
563 if (IS_IMMUTABLE(&vp
->v_inode
) || IS_APPEND(&vp
->v_inode
))
565 return bhv_vop_attr_remove(vp
, name
, flags
, NULL
);
569 xfs_attrmulti_by_handle(
572 struct file
*parfilp
,
573 struct inode
*parinode
)
576 xfs_attr_multiop_t
*ops
;
577 xfs_fsop_attrmulti_handlereq_t am_hreq
;
580 unsigned int i
, size
;
583 if (!capable(CAP_SYS_ADMIN
))
584 return -XFS_ERROR(EPERM
);
585 if (copy_from_user(&am_hreq
, arg
, sizeof(xfs_fsop_attrmulti_handlereq_t
)))
586 return -XFS_ERROR(EFAULT
);
588 error
= xfs_vget_fsop_handlereq(mp
, parinode
, &am_hreq
.hreq
, &vp
, &inode
);
593 size
= am_hreq
.opcount
* sizeof(attr_multiop_t
);
594 if (!size
|| size
> 16 * PAGE_SIZE
)
598 ops
= kmalloc(size
, GFP_KERNEL
);
603 if (copy_from_user(ops
, am_hreq
.ops
, size
))
606 attr_name
= kmalloc(MAXNAMELEN
, GFP_KERNEL
);
612 for (i
= 0; i
< am_hreq
.opcount
; i
++) {
613 ops
[i
].am_error
= strncpy_from_user(attr_name
,
614 ops
[i
].am_attrname
, MAXNAMELEN
);
615 if (ops
[i
].am_error
== 0 || ops
[i
].am_error
== MAXNAMELEN
)
617 if (ops
[i
].am_error
< 0)
620 switch (ops
[i
].am_opcode
) {
622 ops
[i
].am_error
= xfs_attrmulti_attr_get(vp
,
623 attr_name
, ops
[i
].am_attrvalue
,
624 &ops
[i
].am_length
, ops
[i
].am_flags
);
627 ops
[i
].am_error
= xfs_attrmulti_attr_set(vp
,
628 attr_name
, ops
[i
].am_attrvalue
,
629 ops
[i
].am_length
, ops
[i
].am_flags
);
632 ops
[i
].am_error
= xfs_attrmulti_attr_remove(vp
,
633 attr_name
, ops
[i
].am_flags
);
636 ops
[i
].am_error
= EINVAL
;
640 if (copy_to_user(am_hreq
.ops
, ops
, size
))
641 error
= XFS_ERROR(EFAULT
);
652 /* prototypes for a few of the stack-hungry cases that have
653 * their own functions. Functions are defined after their use
654 * so gcc doesn't get fancy and inline them with -03 */
672 xfs_ioc_fsgeometry_v1(
716 vp
= vn_from_inode(inode
);
718 vn_trace_entry(vp
, "xfs_ioctl", (inst_t
*)__return_address
);
720 ip
= XFS_BHVTOI(bdp
);
725 case XFS_IOC_ALLOCSP
:
728 case XFS_IOC_UNRESVSP
:
729 case XFS_IOC_ALLOCSP64
:
730 case XFS_IOC_FREESP64
:
731 case XFS_IOC_RESVSP64
:
732 case XFS_IOC_UNRESVSP64
:
734 * Only allow the sys admin to reserve space unless
735 * unwritten extents are enabled.
737 if (!XFS_SB_VERSION_HASEXTFLGBIT(&mp
->m_sb
) &&
738 !capable(CAP_SYS_ADMIN
))
741 return xfs_ioc_space(bdp
, inode
, filp
, ioflags
, cmd
, arg
);
743 case XFS_IOC_DIOINFO
: {
745 xfs_buftarg_t
*target
=
746 (ip
->i_d
.di_flags
& XFS_DIFLAG_REALTIME
) ?
747 mp
->m_rtdev_targp
: mp
->m_ddev_targp
;
749 da
.d_mem
= da
.d_miniosz
= 1 << target
->bt_sshift
;
750 da
.d_maxiosz
= INT_MAX
& ~(da
.d_miniosz
- 1);
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 return put_user(inode
->i_generation
, (int __user
*)arg
);
771 case XFS_IOC_GETXFLAGS
:
772 case XFS_IOC_SETXFLAGS
:
773 case XFS_IOC_FSGETXATTR
:
774 case XFS_IOC_FSSETXATTR
:
775 case XFS_IOC_FSGETXATTRA
:
776 return xfs_ioc_xattr(vp
, ip
, filp
, cmd
, arg
);
778 case XFS_IOC_FSSETDM
: {
779 struct fsdmidata dmi
;
781 if (copy_from_user(&dmi
, arg
, sizeof(dmi
)))
782 return -XFS_ERROR(EFAULT
);
784 error
= xfs_set_dmattrs(bdp
, dmi
.fsd_dmevmask
, dmi
.fsd_dmstate
,
789 case XFS_IOC_GETBMAP
:
790 case XFS_IOC_GETBMAPA
:
791 return xfs_ioc_getbmap(bdp
, filp
, ioflags
, cmd
, arg
);
793 case XFS_IOC_GETBMAPX
:
794 return xfs_ioc_getbmapx(bdp
, arg
);
796 case XFS_IOC_FD_TO_HANDLE
:
797 case XFS_IOC_PATH_TO_HANDLE
:
798 case XFS_IOC_PATH_TO_FSHANDLE
:
799 return xfs_find_handle(cmd
, arg
);
801 case XFS_IOC_OPEN_BY_HANDLE
:
802 return xfs_open_by_handle(mp
, arg
, filp
, inode
);
804 case XFS_IOC_FSSETDM_BY_HANDLE
:
805 return xfs_fssetdm_by_handle(mp
, arg
, filp
, inode
);
807 case XFS_IOC_READLINK_BY_HANDLE
:
808 return xfs_readlink_by_handle(mp
, arg
, filp
, inode
);
810 case XFS_IOC_ATTRLIST_BY_HANDLE
:
811 return xfs_attrlist_by_handle(mp
, arg
, filp
, inode
);
813 case XFS_IOC_ATTRMULTI_BY_HANDLE
:
814 return xfs_attrmulti_by_handle(mp
, arg
, filp
, inode
);
816 case XFS_IOC_SWAPEXT
: {
817 error
= xfs_swapext((struct xfs_swapext __user
*)arg
);
821 case XFS_IOC_FSCOUNTS
: {
822 xfs_fsop_counts_t out
;
824 error
= xfs_fs_counts(mp
, &out
);
828 if (copy_to_user(arg
, &out
, sizeof(out
)))
829 return -XFS_ERROR(EFAULT
);
833 case XFS_IOC_SET_RESBLKS
: {
834 xfs_fsop_resblks_t inout
;
837 if (!capable(CAP_SYS_ADMIN
))
840 if (copy_from_user(&inout
, arg
, sizeof(inout
)))
841 return -XFS_ERROR(EFAULT
);
843 /* input parameter is passed in resblks field of structure */
845 error
= xfs_reserve_blocks(mp
, &in
, &inout
);
849 if (copy_to_user(arg
, &inout
, sizeof(inout
)))
850 return -XFS_ERROR(EFAULT
);
854 case XFS_IOC_GET_RESBLKS
: {
855 xfs_fsop_resblks_t out
;
857 if (!capable(CAP_SYS_ADMIN
))
860 error
= xfs_reserve_blocks(mp
, NULL
, &out
);
864 if (copy_to_user(arg
, &out
, sizeof(out
)))
865 return -XFS_ERROR(EFAULT
);
870 case XFS_IOC_FSGROWFSDATA
: {
871 xfs_growfs_data_t in
;
873 if (!capable(CAP_SYS_ADMIN
))
876 if (copy_from_user(&in
, arg
, sizeof(in
)))
877 return -XFS_ERROR(EFAULT
);
879 error
= xfs_growfs_data(mp
, &in
);
883 case XFS_IOC_FSGROWFSLOG
: {
886 if (!capable(CAP_SYS_ADMIN
))
889 if (copy_from_user(&in
, arg
, sizeof(in
)))
890 return -XFS_ERROR(EFAULT
);
892 error
= xfs_growfs_log(mp
, &in
);
896 case XFS_IOC_FSGROWFSRT
: {
899 if (!capable(CAP_SYS_ADMIN
))
902 if (copy_from_user(&in
, arg
, sizeof(in
)))
903 return -XFS_ERROR(EFAULT
);
905 error
= xfs_growfs_rt(mp
, &in
);
910 if (!capable(CAP_SYS_ADMIN
))
913 if (inode
->i_sb
->s_frozen
== SB_UNFROZEN
)
914 freeze_bdev(inode
->i_sb
->s_bdev
);
918 if (!capable(CAP_SYS_ADMIN
))
920 if (inode
->i_sb
->s_frozen
!= SB_UNFROZEN
)
921 thaw_bdev(inode
->i_sb
->s_bdev
, inode
->i_sb
);
924 case XFS_IOC_GOINGDOWN
: {
927 if (!capable(CAP_SYS_ADMIN
))
930 if (get_user(in
, (__uint32_t __user
*)arg
))
931 return -XFS_ERROR(EFAULT
);
933 error
= xfs_fs_goingdown(mp
, in
);
937 case XFS_IOC_ERROR_INJECTION
: {
938 xfs_error_injection_t in
;
940 if (!capable(CAP_SYS_ADMIN
))
943 if (copy_from_user(&in
, arg
, sizeof(in
)))
944 return -XFS_ERROR(EFAULT
);
946 error
= xfs_errortag_add(in
.errtag
, mp
);
950 case XFS_IOC_ERROR_CLEARALL
:
951 if (!capable(CAP_SYS_ADMIN
))
954 error
= xfs_errortag_clearall(mp
);
975 if (inode
->i_flags
& (S_IMMUTABLE
|S_APPEND
))
976 return -XFS_ERROR(EPERM
);
978 if (!(filp
->f_mode
& FMODE_WRITE
))
979 return -XFS_ERROR(EBADF
);
981 if (!S_ISREG(inode
->i_mode
))
982 return -XFS_ERROR(EINVAL
);
984 if (copy_from_user(&bf
, arg
, sizeof(bf
)))
985 return -XFS_ERROR(EFAULT
);
987 if (filp
->f_flags
& (O_NDELAY
|O_NONBLOCK
))
988 attr_flags
|= ATTR_NONBLOCK
;
989 if (ioflags
& IO_INVIS
)
990 attr_flags
|= ATTR_DMI
;
992 error
= xfs_change_file_space(bdp
, cmd
, &bf
, filp
->f_pos
,
1003 xfs_fsop_bulkreq_t bulkreq
;
1004 int count
; /* # of records returned */
1005 xfs_ino_t inlast
; /* last inode number */
1009 /* done = 1 if there are more stats to get and if bulkstat */
1010 /* should be called again (unused here, but used in dmapi) */
1012 if (!capable(CAP_SYS_ADMIN
))
1015 if (XFS_FORCED_SHUTDOWN(mp
))
1016 return -XFS_ERROR(EIO
);
1018 if (copy_from_user(&bulkreq
, arg
, sizeof(xfs_fsop_bulkreq_t
)))
1019 return -XFS_ERROR(EFAULT
);
1021 if (copy_from_user(&inlast
, bulkreq
.lastip
, sizeof(__s64
)))
1022 return -XFS_ERROR(EFAULT
);
1024 if ((count
= bulkreq
.icount
) <= 0)
1025 return -XFS_ERROR(EINVAL
);
1027 if (cmd
== XFS_IOC_FSINUMBERS
)
1028 error
= xfs_inumbers(mp
, &inlast
, &count
,
1030 else if (cmd
== XFS_IOC_FSBULKSTAT_SINGLE
)
1031 error
= xfs_bulkstat_single(mp
, &inlast
,
1032 bulkreq
.ubuffer
, &done
);
1033 else { /* XFS_IOC_FSBULKSTAT */
1034 if (count
== 1 && inlast
!= 0) {
1036 error
= xfs_bulkstat_single(mp
, &inlast
,
1037 bulkreq
.ubuffer
, &done
);
1039 error
= xfs_bulkstat(mp
, &inlast
, &count
,
1040 (bulkstat_one_pf
)xfs_bulkstat_one
, NULL
,
1041 sizeof(xfs_bstat_t
), bulkreq
.ubuffer
,
1042 BULKSTAT_FG_QUICK
, &done
);
1049 if (bulkreq
.ocount
!= NULL
) {
1050 if (copy_to_user(bulkreq
.lastip
, &inlast
,
1052 return -XFS_ERROR(EFAULT
);
1054 if (copy_to_user(bulkreq
.ocount
, &count
, sizeof(count
)))
1055 return -XFS_ERROR(EFAULT
);
1062 xfs_ioc_fsgeometry_v1(
1066 xfs_fsop_geom_v1_t fsgeo
;
1069 error
= xfs_fs_geometry(mp
, (xfs_fsop_geom_t
*)&fsgeo
, 3);
1073 if (copy_to_user(arg
, &fsgeo
, sizeof(fsgeo
)))
1074 return -XFS_ERROR(EFAULT
);
1083 xfs_fsop_geom_t fsgeo
;
1086 error
= xfs_fs_geometry(mp
, &fsgeo
, 4);
1090 if (copy_to_user(arg
, &fsgeo
, sizeof(fsgeo
)))
1091 return -XFS_ERROR(EFAULT
);
1096 * Linux extended inode flags interface.
1098 #define LINUX_XFLAG_SYNC 0x00000008 /* Synchronous updates */
1099 #define LINUX_XFLAG_IMMUTABLE 0x00000010 /* Immutable file */
1100 #define LINUX_XFLAG_APPEND 0x00000020 /* writes to file may only append */
1101 #define LINUX_XFLAG_NODUMP 0x00000040 /* do not dump file */
1102 #define LINUX_XFLAG_NOATIME 0x00000080 /* do not update atime */
1105 xfs_merge_ioc_xflags(
1109 unsigned int xflags
= start
;
1111 if (flags
& LINUX_XFLAG_IMMUTABLE
)
1112 xflags
|= XFS_XFLAG_IMMUTABLE
;
1114 xflags
&= ~XFS_XFLAG_IMMUTABLE
;
1115 if (flags
& LINUX_XFLAG_APPEND
)
1116 xflags
|= XFS_XFLAG_APPEND
;
1118 xflags
&= ~XFS_XFLAG_APPEND
;
1119 if (flags
& LINUX_XFLAG_SYNC
)
1120 xflags
|= XFS_XFLAG_SYNC
;
1122 xflags
&= ~XFS_XFLAG_SYNC
;
1123 if (flags
& LINUX_XFLAG_NOATIME
)
1124 xflags
|= XFS_XFLAG_NOATIME
;
1126 xflags
&= ~XFS_XFLAG_NOATIME
;
1127 if (flags
& LINUX_XFLAG_NODUMP
)
1128 xflags
|= XFS_XFLAG_NODUMP
;
1130 xflags
&= ~XFS_XFLAG_NODUMP
;
1137 __uint16_t di_flags
)
1139 unsigned int flags
= 0;
1141 if (di_flags
& XFS_DIFLAG_IMMUTABLE
)
1142 flags
|= LINUX_XFLAG_IMMUTABLE
;
1143 if (di_flags
& XFS_DIFLAG_APPEND
)
1144 flags
|= LINUX_XFLAG_APPEND
;
1145 if (di_flags
& XFS_DIFLAG_SYNC
)
1146 flags
|= LINUX_XFLAG_SYNC
;
1147 if (di_flags
& XFS_DIFLAG_NOATIME
)
1148 flags
|= LINUX_XFLAG_NOATIME
;
1149 if (di_flags
& XFS_DIFLAG_NODUMP
)
1150 flags
|= LINUX_XFLAG_NODUMP
;
1163 struct bhv_vattr
*vattr
;
1168 vattr
= kmalloc(sizeof(*vattr
), GFP_KERNEL
);
1169 if (unlikely(!vattr
))
1173 case XFS_IOC_FSGETXATTR
: {
1174 vattr
->va_mask
= XFS_AT_XFLAGS
| XFS_AT_EXTSIZE
| \
1175 XFS_AT_NEXTENTS
| XFS_AT_PROJID
;
1176 error
= bhv_vop_getattr(vp
, vattr
, 0, NULL
);
1177 if (unlikely(error
)) {
1182 fa
.fsx_xflags
= vattr
->va_xflags
;
1183 fa
.fsx_extsize
= vattr
->va_extsize
;
1184 fa
.fsx_nextents
= vattr
->va_nextents
;
1185 fa
.fsx_projid
= vattr
->va_projid
;
1187 if (copy_to_user(arg
, &fa
, sizeof(fa
))) {
1194 case XFS_IOC_FSSETXATTR
: {
1195 if (copy_from_user(&fa
, arg
, sizeof(fa
))) {
1201 if (filp
->f_flags
& (O_NDELAY
|O_NONBLOCK
))
1202 attr_flags
|= ATTR_NONBLOCK
;
1204 vattr
->va_mask
= XFS_AT_XFLAGS
| XFS_AT_EXTSIZE
| XFS_AT_PROJID
;
1205 vattr
->va_xflags
= fa
.fsx_xflags
;
1206 vattr
->va_extsize
= fa
.fsx_extsize
;
1207 vattr
->va_projid
= fa
.fsx_projid
;
1209 error
= bhv_vop_setattr(vp
, vattr
, attr_flags
, NULL
);
1211 __vn_revalidate(vp
, vattr
); /* update flags */
1216 case XFS_IOC_FSGETXATTRA
: {
1217 vattr
->va_mask
= XFS_AT_XFLAGS
| XFS_AT_EXTSIZE
| \
1218 XFS_AT_ANEXTENTS
| XFS_AT_PROJID
;
1219 error
= bhv_vop_getattr(vp
, vattr
, 0, NULL
);
1220 if (unlikely(error
)) {
1225 fa
.fsx_xflags
= vattr
->va_xflags
;
1226 fa
.fsx_extsize
= vattr
->va_extsize
;
1227 fa
.fsx_nextents
= vattr
->va_anextents
;
1228 fa
.fsx_projid
= vattr
->va_projid
;
1230 if (copy_to_user(arg
, &fa
, sizeof(fa
))) {
1237 case XFS_IOC_GETXFLAGS
: {
1238 flags
= xfs_di2lxflags(ip
->i_d
.di_flags
);
1239 if (copy_to_user(arg
, &flags
, sizeof(flags
)))
1244 case XFS_IOC_SETXFLAGS
: {
1245 if (copy_from_user(&flags
, arg
, sizeof(flags
))) {
1250 if (flags
& ~(LINUX_XFLAG_IMMUTABLE
| LINUX_XFLAG_APPEND
| \
1251 LINUX_XFLAG_NOATIME
| LINUX_XFLAG_NODUMP
| \
1252 LINUX_XFLAG_SYNC
)) {
1253 error
= -EOPNOTSUPP
;
1258 if (filp
->f_flags
& (O_NDELAY
|O_NONBLOCK
))
1259 attr_flags
|= ATTR_NONBLOCK
;
1261 vattr
->va_mask
= XFS_AT_XFLAGS
;
1262 vattr
->va_xflags
= xfs_merge_ioc_xflags(flags
,
1265 error
= bhv_vop_setattr(vp
, vattr
, attr_flags
, NULL
);
1267 __vn_revalidate(vp
, vattr
); /* update flags */
1293 if (copy_from_user(&bm
, arg
, sizeof(bm
)))
1294 return -XFS_ERROR(EFAULT
);
1296 if (bm
.bmv_count
< 2)
1297 return -XFS_ERROR(EINVAL
);
1299 iflags
= (cmd
== XFS_IOC_GETBMAPA
? BMV_IF_ATTRFORK
: 0);
1300 if (ioflags
& IO_INVIS
)
1301 iflags
|= BMV_IF_NO_DMAPI_READ
;
1303 error
= xfs_getbmap(bdp
, &bm
, (struct getbmap __user
*)arg
+1, iflags
);
1307 if (copy_to_user(arg
, &bm
, sizeof(bm
)))
1308 return -XFS_ERROR(EFAULT
);
1317 struct getbmapx bmx
;
1322 if (copy_from_user(&bmx
, arg
, sizeof(bmx
)))
1323 return -XFS_ERROR(EFAULT
);
1325 if (bmx
.bmv_count
< 2)
1326 return -XFS_ERROR(EINVAL
);
1329 * Map input getbmapx structure to a getbmap
1330 * structure for xfs_getbmap.
1332 GETBMAP_CONVERT(bmx
, bm
);
1334 iflags
= bmx
.bmv_iflags
;
1336 if (iflags
& (~BMV_IF_VALID
))
1337 return -XFS_ERROR(EINVAL
);
1339 iflags
|= BMV_IF_EXTENDED
;
1341 error
= xfs_getbmap(bdp
, &bm
, (struct getbmapx __user
*)arg
+1, iflags
);
1345 GETBMAP_CONVERT(bm
, bmx
);
1347 if (copy_to_user(arg
, &bmx
, sizeof(bmx
)))
1348 return -XFS_ERROR(EFAULT
);