2 * Copyright (c) 2000-2003 Silicon Graphics, Inc. All Rights Reserved.
4 * This program is free software; you can redistribute it and/or modify it
5 * under the terms of version 2 of the GNU General Public License as
6 * published by the Free Software Foundation.
8 * This program is distributed in the hope that it would be useful, but
9 * WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
12 * Further, this software is distributed without any warranty that it is
13 * free of the rightful claim of any third person regarding infringement
14 * or the like. Any license provided herein, whether implied or
15 * otherwise, applies only to this software file. Patent licenses, if
16 * any, provided herein do not apply to combinations of this program with
17 * other software, or any other product whatsoever.
19 * You should have received a copy of the GNU General Public License along
20 * with this program; if not, write the Free Software Foundation, Inc., 59
21 * Temple Place - Suite 330, Boston MA 02111-1307, USA.
23 * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
24 * Mountain View, CA 94043, or:
28 * For further information regarding this notice, see:
30 * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
38 #include "xfs_trans.h"
42 #include "xfs_alloc.h"
43 #include "xfs_dmapi.h"
44 #include "xfs_mount.h"
45 #include "xfs_alloc_btree.h"
46 #include "xfs_bmap_btree.h"
47 #include "xfs_ialloc_btree.h"
48 #include "xfs_btree.h"
49 #include "xfs_ialloc.h"
50 #include "xfs_attr_sf.h"
51 #include "xfs_dir_sf.h"
52 #include "xfs_dir2_sf.h"
53 #include "xfs_dinode.h"
54 #include "xfs_inode.h"
57 #include "xfs_rtalloc.h"
58 #include "xfs_error.h"
59 #include "xfs_itable.h"
65 #include "xfs_buf_item.h"
66 #include "xfs_utils.h"
67 #include "xfs_dfrag.h"
68 #include "xfs_fsops.h"
70 #include <linux/dcache.h>
71 #include <linux/mount.h>
72 #include <linux/namei.h>
73 #include <linux/pagemap.h>
76 * xfs_find_handle maps from userspace xfs_fsop_handlereq structure to
77 * a file or fs handle.
79 * XFS_IOC_PATH_TO_FSHANDLE
80 * returns fs handle for a mount point or path within that mount point
81 * XFS_IOC_FD_TO_HANDLE
82 * returns full handle for a FD opened in user space
83 * XFS_IOC_PATH_TO_HANDLE
84 * returns full handle for a path
93 xfs_fsop_handlereq_t hreq
;
97 if (copy_from_user(&hreq
, arg
, sizeof(hreq
)))
98 return -XFS_ERROR(EFAULT
);
100 memset((char *)&handle
, 0, sizeof(handle
));
103 case XFS_IOC_PATH_TO_FSHANDLE
:
104 case XFS_IOC_PATH_TO_HANDLE
: {
108 error
= user_path_walk_link((const char __user
*)hreq
.path
, &nd
);
113 ASSERT(nd
.dentry
->d_inode
);
114 inode
= igrab(nd
.dentry
->d_inode
);
119 case XFS_IOC_FD_TO_HANDLE
: {
122 file
= fget(hreq
.fd
);
126 ASSERT(file
->f_dentry
);
127 ASSERT(file
->f_dentry
->d_inode
);
128 inode
= igrab(file
->f_dentry
->d_inode
);
135 return -XFS_ERROR(EINVAL
);
138 if (inode
->i_sb
->s_magic
!= XFS_SB_MAGIC
) {
139 /* we're not in XFS anymore, Toto */
141 return -XFS_ERROR(EINVAL
);
144 /* we need the vnode */
145 vp
= LINVFS_GET_VP(inode
);
146 if (vp
->v_type
!= VREG
&& vp
->v_type
!= VDIR
&& vp
->v_type
!= VLNK
) {
148 return -XFS_ERROR(EBADF
);
151 /* now we can grab the fsid */
152 memcpy(&handle
.ha_fsid
, vp
->v_vfsp
->vfs_altfsid
, sizeof(xfs_fsid_t
));
153 hsize
= sizeof(xfs_fsid_t
);
155 if (cmd
!= XFS_IOC_PATH_TO_FSHANDLE
) {
160 /* need to get access to the xfs_inode to read the generation */
161 bhv
= vn_bhv_lookup_unlocked(VN_BHV_HEAD(vp
), &xfs_vnodeops
);
163 ip
= XFS_BHVTOI(bhv
);
165 lock_mode
= xfs_ilock_map_shared(ip
);
167 /* fill in fid section of handle from inode */
168 handle
.ha_fid
.xfs_fid_len
= sizeof(xfs_fid_t
) -
169 sizeof(handle
.ha_fid
.xfs_fid_len
);
170 handle
.ha_fid
.xfs_fid_pad
= 0;
171 handle
.ha_fid
.xfs_fid_gen
= ip
->i_d
.di_gen
;
172 handle
.ha_fid
.xfs_fid_ino
= ip
->i_ino
;
174 xfs_iunlock_map_shared(ip
, lock_mode
);
176 hsize
= XFS_HSIZE(handle
);
179 /* now copy our handle into the user buffer & write out the size */
180 if (copy_to_user(hreq
.ohandle
, &handle
, hsize
) ||
181 copy_to_user(hreq
.ohandlen
, &hsize
, sizeof(__s32
))) {
183 return -XFS_ERROR(EFAULT
);
192 * Convert userspace handle data into vnode (and inode).
193 * We [ab]use the fact that all the fsop_handlereq ioctl calls
194 * have a data structure argument whose first component is always
195 * a xfs_fsop_handlereq_t, so we can cast to and from this type.
196 * This allows us to optimise the copy_from_user calls and gives
197 * a handy, shared routine.
199 * If no error, caller must always VN_RELE the returned vp.
202 xfs_vget_fsop_handlereq(
204 struct inode
*parinode
, /* parent inode pointer */
205 xfs_fsop_handlereq_t
*hreq
,
207 struct inode
**inode
)
212 xfs_handle_t
*handlep
;
215 struct inode
*inodep
;
222 * Only allow handle opens under a directory.
224 if (!S_ISDIR(parinode
->i_mode
))
225 return XFS_ERROR(ENOTDIR
);
227 hanp
= hreq
->ihandle
;
228 hlen
= hreq
->ihandlen
;
231 if (hlen
< sizeof(handlep
->ha_fsid
) || hlen
> sizeof(*handlep
))
232 return XFS_ERROR(EINVAL
);
233 if (copy_from_user(handlep
, hanp
, hlen
))
234 return XFS_ERROR(EFAULT
);
235 if (hlen
< sizeof(*handlep
))
236 memset(((char *)handlep
) + hlen
, 0, sizeof(*handlep
) - hlen
);
237 if (hlen
> sizeof(handlep
->ha_fsid
)) {
238 if (handlep
->ha_fid
.xfs_fid_len
!=
239 (hlen
- sizeof(handlep
->ha_fsid
)
240 - sizeof(handlep
->ha_fid
.xfs_fid_len
))
241 || handlep
->ha_fid
.xfs_fid_pad
)
242 return XFS_ERROR(EINVAL
);
246 * Crack the handle, obtain the inode # & generation #
248 xfid
= (struct xfs_fid
*)&handlep
->ha_fid
;
249 if (xfid
->xfs_fid_len
== sizeof(*xfid
) - sizeof(xfid
->xfs_fid_len
)) {
250 ino
= xfid
->xfs_fid_ino
;
251 igen
= xfid
->xfs_fid_gen
;
253 return XFS_ERROR(EINVAL
);
257 * Get the XFS inode, building a vnode to go with it.
259 error
= xfs_iget(mp
, NULL
, ino
, 0, XFS_ILOCK_SHARED
, &ip
, 0);
263 return XFS_ERROR(EIO
);
264 if (ip
->i_d
.di_mode
== 0 || ip
->i_d
.di_gen
!= igen
) {
265 xfs_iput_new(ip
, XFS_ILOCK_SHARED
);
266 return XFS_ERROR(ENOENT
);
270 inodep
= LINVFS_GET_IP(vpp
);
271 xfs_iunlock(ip
, XFS_ILOCK_SHARED
);
282 struct file
*parfilp
,
283 struct inode
*parinode
)
290 struct dentry
*dentry
;
292 xfs_fsop_handlereq_t hreq
;
294 if (!capable(CAP_SYS_ADMIN
))
295 return -XFS_ERROR(EPERM
);
296 if (copy_from_user(&hreq
, arg
, sizeof(xfs_fsop_handlereq_t
)))
297 return -XFS_ERROR(EFAULT
);
299 error
= xfs_vget_fsop_handlereq(mp
, parinode
, &hreq
, &vp
, &inode
);
303 /* Restrict xfs_open_by_handle to directories & regular files. */
304 if (!(S_ISREG(inode
->i_mode
) || S_ISDIR(inode
->i_mode
))) {
306 return -XFS_ERROR(EINVAL
);
309 #if BITS_PER_LONG != 32
310 hreq
.oflags
|= O_LARGEFILE
;
312 /* Put open permission in namei format. */
313 permflag
= hreq
.oflags
;
314 if ((permflag
+1) & O_ACCMODE
)
316 if (permflag
& O_TRUNC
)
319 if ((!(permflag
& O_APPEND
) || (permflag
& O_TRUNC
)) &&
320 (permflag
& FMODE_WRITE
) && IS_APPEND(inode
)) {
322 return -XFS_ERROR(EPERM
);
325 if ((permflag
& FMODE_WRITE
) && IS_IMMUTABLE(inode
)) {
327 return -XFS_ERROR(EACCES
);
330 /* Can't write directories. */
331 if ( S_ISDIR(inode
->i_mode
) && (permflag
& FMODE_WRITE
)) {
333 return -XFS_ERROR(EISDIR
);
336 if ((new_fd
= get_unused_fd()) < 0) {
341 dentry
= d_alloc_anon(inode
);
342 if (dentry
== NULL
) {
344 put_unused_fd(new_fd
);
345 return -XFS_ERROR(ENOMEM
);
348 /* Ensure umount returns EBUSY on umounts while this file is open. */
349 mntget(parfilp
->f_vfsmnt
);
351 /* Create file pointer. */
352 filp
= dentry_open(dentry
, parfilp
->f_vfsmnt
, hreq
.oflags
);
354 put_unused_fd(new_fd
);
355 return -XFS_ERROR(-PTR_ERR(filp
));
357 if (inode
->i_mode
& S_IFREG
)
358 filp
->f_op
= &linvfs_invis_file_operations
;
360 fd_install(new_fd
, filp
);
365 xfs_readlink_by_handle(
368 struct file
*parfilp
,
369 struct inode
*parinode
)
375 xfs_fsop_handlereq_t hreq
;
379 if (!capable(CAP_SYS_ADMIN
))
380 return -XFS_ERROR(EPERM
);
381 if (copy_from_user(&hreq
, arg
, sizeof(xfs_fsop_handlereq_t
)))
382 return -XFS_ERROR(EFAULT
);
384 error
= xfs_vget_fsop_handlereq(mp
, parinode
, &hreq
, &vp
, &inode
);
388 /* Restrict this handle operation to symlinks only. */
389 if (vp
->v_type
!= VLNK
) {
391 return -XFS_ERROR(EINVAL
);
394 if (copy_from_user(&olen
, hreq
.ohandlen
, sizeof(__u32
))) {
396 return -XFS_ERROR(EFAULT
);
399 aiov
.iov_base
= hreq
.ohandle
;
401 auio
.uio_iov
= &aiov
;
404 auio
.uio_segflg
= UIO_USERSPACE
;
405 auio
.uio_resid
= olen
;
407 VOP_READLINK(vp
, &auio
, IO_INVIS
, NULL
, error
);
410 return (olen
- auio
.uio_resid
);
414 xfs_fssetdm_by_handle(
417 struct file
*parfilp
,
418 struct inode
*parinode
)
421 struct fsdmidata fsd
;
422 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
, &vp
, &inode
);
436 if (IS_IMMUTABLE(inode
) || IS_APPEND(inode
)) {
438 return -XFS_ERROR(EPERM
);
441 if (copy_from_user(&fsd
, dmhreq
.data
, sizeof(fsd
))) {
443 return -XFS_ERROR(EFAULT
);
446 bdp
= bhv_base_unlocked(VN_BHV_HEAD(vp
));
447 error
= xfs_set_dmattrs(bdp
, fsd
.fsd_dmevmask
, fsd
.fsd_dmstate
, NULL
);
456 xfs_attrlist_by_handle(
459 struct file
*parfilp
,
460 struct inode
*parinode
)
463 attrlist_cursor_kern_t
*cursor
;
464 xfs_fsop_attrlist_handlereq_t al_hreq
;
469 if (!capable(CAP_SYS_ADMIN
))
470 return -XFS_ERROR(EPERM
);
471 if (copy_from_user(&al_hreq
, arg
, sizeof(xfs_fsop_attrlist_handlereq_t
)))
472 return -XFS_ERROR(EFAULT
);
473 if (al_hreq
.buflen
> XATTR_LIST_MAX
)
474 return -XFS_ERROR(EINVAL
);
476 error
= xfs_vget_fsop_handlereq(mp
, parinode
, &al_hreq
.hreq
,
481 kbuf
= kmalloc(al_hreq
.buflen
, GFP_KERNEL
);
485 cursor
= (attrlist_cursor_kern_t
*)&al_hreq
.pos
;
486 VOP_ATTR_LIST(vp
, kbuf
, al_hreq
.buflen
, al_hreq
.flags
,
487 cursor
, NULL
, error
);
491 if (copy_to_user(al_hreq
.buffer
, kbuf
, al_hreq
.buflen
))
503 xfs_attrmulti_attr_get(
513 if (*len
> XATTR_SIZE_MAX
)
515 kbuf
= kmalloc(*len
, GFP_KERNEL
);
519 VOP_ATTR_GET(vp
, name
, kbuf
, len
, flags
, NULL
, error
);
523 if (copy_to_user(ubuf
, kbuf
, *len
))
532 xfs_attrmulti_attr_set(
535 const char __user
*ubuf
,
542 if (IS_IMMUTABLE(&vp
->v_inode
) || IS_APPEND(&vp
->v_inode
))
544 if (len
> XATTR_SIZE_MAX
)
547 kbuf
= kmalloc(len
, GFP_KERNEL
);
551 if (copy_from_user(kbuf
, ubuf
, len
))
554 VOP_ATTR_SET(vp
, name
, kbuf
, len
, flags
, NULL
, error
);
562 xfs_attrmulti_attr_remove(
569 if (IS_IMMUTABLE(&vp
->v_inode
) || IS_APPEND(&vp
->v_inode
))
572 VOP_ATTR_REMOVE(vp
, name
, flags
, NULL
, error
);
577 xfs_attrmulti_by_handle(
580 struct file
*parfilp
,
581 struct inode
*parinode
)
584 xfs_attr_multiop_t
*ops
;
585 xfs_fsop_attrmulti_handlereq_t am_hreq
;
588 unsigned int i
, size
;
591 if (!capable(CAP_SYS_ADMIN
))
592 return -XFS_ERROR(EPERM
);
593 if (copy_from_user(&am_hreq
, arg
, sizeof(xfs_fsop_attrmulti_handlereq_t
)))
594 return -XFS_ERROR(EFAULT
);
596 error
= xfs_vget_fsop_handlereq(mp
, parinode
, &am_hreq
.hreq
, &vp
, &inode
);
601 size
= am_hreq
.opcount
* sizeof(attr_multiop_t
);
602 if (!size
|| size
> 16 * PAGE_SIZE
)
606 ops
= kmalloc(size
, GFP_KERNEL
);
611 if (copy_from_user(ops
, am_hreq
.ops
, size
))
614 attr_name
= kmalloc(MAXNAMELEN
, GFP_KERNEL
);
620 for (i
= 0; i
< am_hreq
.opcount
; i
++) {
621 ops
[i
].am_error
= strncpy_from_user(attr_name
,
622 ops
[i
].am_attrname
, MAXNAMELEN
);
623 if (ops
[i
].am_error
== 0 || ops
[i
].am_error
== MAXNAMELEN
)
625 if (ops
[i
].am_error
< 0)
628 switch (ops
[i
].am_opcode
) {
630 ops
[i
].am_error
= xfs_attrmulti_attr_get(vp
,
631 attr_name
, ops
[i
].am_attrvalue
,
632 &ops
[i
].am_length
, ops
[i
].am_flags
);
635 ops
[i
].am_error
= xfs_attrmulti_attr_set(vp
,
636 attr_name
, ops
[i
].am_attrvalue
,
637 ops
[i
].am_length
, ops
[i
].am_flags
);
640 ops
[i
].am_error
= xfs_attrmulti_attr_remove(vp
,
641 attr_name
, ops
[i
].am_flags
);
644 ops
[i
].am_error
= EINVAL
;
648 if (copy_to_user(am_hreq
.ops
, ops
, size
))
649 error
= XFS_ERROR(EFAULT
);
660 /* prototypes for a few of the stack-hungry cases that have
661 * their own functions. Functions are defined after their use
662 * so gcc doesn't get fancy and inline them with -03 */
680 xfs_ioc_fsgeometry_v1(
724 vp
= LINVFS_GET_VP(inode
);
726 vn_trace_entry(vp
, "xfs_ioctl", (inst_t
*)__return_address
);
728 ip
= XFS_BHVTOI(bdp
);
733 case XFS_IOC_ALLOCSP
:
736 case XFS_IOC_UNRESVSP
:
737 case XFS_IOC_ALLOCSP64
:
738 case XFS_IOC_FREESP64
:
739 case XFS_IOC_RESVSP64
:
740 case XFS_IOC_UNRESVSP64
:
742 * Only allow the sys admin to reserve space unless
743 * unwritten extents are enabled.
745 if (!XFS_SB_VERSION_HASEXTFLGBIT(&mp
->m_sb
) &&
746 !capable(CAP_SYS_ADMIN
))
749 return xfs_ioc_space(bdp
, vp
, filp
, ioflags
, cmd
, arg
);
751 case XFS_IOC_DIOINFO
: {
753 xfs_buftarg_t
*target
=
754 (ip
->i_d
.di_flags
& XFS_DIFLAG_REALTIME
) ?
755 mp
->m_rtdev_targp
: mp
->m_ddev_targp
;
757 da
.d_mem
= da
.d_miniosz
= 1 << target
->pbr_sshift
;
758 /* The size dio will do in one go */
759 da
.d_maxiosz
= 64 * PAGE_CACHE_SIZE
;
761 if (copy_to_user(arg
, &da
, sizeof(da
)))
762 return -XFS_ERROR(EFAULT
);
766 case XFS_IOC_FSBULKSTAT_SINGLE
:
767 case XFS_IOC_FSBULKSTAT
:
768 case XFS_IOC_FSINUMBERS
:
769 return xfs_ioc_bulkstat(mp
, cmd
, arg
);
771 case XFS_IOC_FSGEOMETRY_V1
:
772 return xfs_ioc_fsgeometry_v1(mp
, arg
);
774 case XFS_IOC_FSGEOMETRY
:
775 return xfs_ioc_fsgeometry(mp
, arg
);
777 case XFS_IOC_GETVERSION
:
778 case XFS_IOC_GETXFLAGS
:
779 case XFS_IOC_SETXFLAGS
:
780 case XFS_IOC_FSGETXATTR
:
781 case XFS_IOC_FSSETXATTR
:
782 case XFS_IOC_FSGETXATTRA
:
783 return xfs_ioc_xattr(vp
, ip
, filp
, cmd
, arg
);
785 case XFS_IOC_FSSETDM
: {
786 struct fsdmidata dmi
;
788 if (copy_from_user(&dmi
, arg
, sizeof(dmi
)))
789 return -XFS_ERROR(EFAULT
);
791 error
= xfs_set_dmattrs(bdp
, dmi
.fsd_dmevmask
, dmi
.fsd_dmstate
,
796 case XFS_IOC_GETBMAP
:
797 case XFS_IOC_GETBMAPA
:
798 return xfs_ioc_getbmap(bdp
, filp
, ioflags
, cmd
, arg
);
800 case XFS_IOC_GETBMAPX
:
801 return xfs_ioc_getbmapx(bdp
, arg
);
803 case XFS_IOC_FD_TO_HANDLE
:
804 case XFS_IOC_PATH_TO_HANDLE
:
805 case XFS_IOC_PATH_TO_FSHANDLE
:
806 return xfs_find_handle(cmd
, arg
);
808 case XFS_IOC_OPEN_BY_HANDLE
:
809 return xfs_open_by_handle(mp
, arg
, filp
, inode
);
811 case XFS_IOC_FSSETDM_BY_HANDLE
:
812 return xfs_fssetdm_by_handle(mp
, arg
, filp
, inode
);
814 case XFS_IOC_READLINK_BY_HANDLE
:
815 return xfs_readlink_by_handle(mp
, arg
, filp
, inode
);
817 case XFS_IOC_ATTRLIST_BY_HANDLE
:
818 return xfs_attrlist_by_handle(mp
, arg
, filp
, inode
);
820 case XFS_IOC_ATTRMULTI_BY_HANDLE
:
821 return xfs_attrmulti_by_handle(mp
, arg
, filp
, inode
);
823 case XFS_IOC_SWAPEXT
: {
824 error
= xfs_swapext((struct xfs_swapext __user
*)arg
);
828 case XFS_IOC_FSCOUNTS
: {
829 xfs_fsop_counts_t out
;
831 error
= xfs_fs_counts(mp
, &out
);
835 if (copy_to_user(arg
, &out
, sizeof(out
)))
836 return -XFS_ERROR(EFAULT
);
840 case XFS_IOC_SET_RESBLKS
: {
841 xfs_fsop_resblks_t inout
;
844 if (!capable(CAP_SYS_ADMIN
))
847 if (copy_from_user(&inout
, arg
, sizeof(inout
)))
848 return -XFS_ERROR(EFAULT
);
850 /* input parameter is passed in resblks field of structure */
852 error
= xfs_reserve_blocks(mp
, &in
, &inout
);
856 if (copy_to_user(arg
, &inout
, sizeof(inout
)))
857 return -XFS_ERROR(EFAULT
);
861 case XFS_IOC_GET_RESBLKS
: {
862 xfs_fsop_resblks_t out
;
864 if (!capable(CAP_SYS_ADMIN
))
867 error
= xfs_reserve_blocks(mp
, NULL
, &out
);
871 if (copy_to_user(arg
, &out
, sizeof(out
)))
872 return -XFS_ERROR(EFAULT
);
877 case XFS_IOC_FSGROWFSDATA
: {
878 xfs_growfs_data_t in
;
880 if (!capable(CAP_SYS_ADMIN
))
883 if (copy_from_user(&in
, arg
, sizeof(in
)))
884 return -XFS_ERROR(EFAULT
);
886 error
= xfs_growfs_data(mp
, &in
);
890 case XFS_IOC_FSGROWFSLOG
: {
893 if (!capable(CAP_SYS_ADMIN
))
896 if (copy_from_user(&in
, arg
, sizeof(in
)))
897 return -XFS_ERROR(EFAULT
);
899 error
= xfs_growfs_log(mp
, &in
);
903 case XFS_IOC_FSGROWFSRT
: {
906 if (!capable(CAP_SYS_ADMIN
))
909 if (copy_from_user(&in
, arg
, sizeof(in
)))
910 return -XFS_ERROR(EFAULT
);
912 error
= xfs_growfs_rt(mp
, &in
);
917 if (!capable(CAP_SYS_ADMIN
))
920 if (inode
->i_sb
->s_frozen
== SB_UNFROZEN
)
921 freeze_bdev(inode
->i_sb
->s_bdev
);
925 if (!capable(CAP_SYS_ADMIN
))
927 if (inode
->i_sb
->s_frozen
!= SB_UNFROZEN
)
928 thaw_bdev(inode
->i_sb
->s_bdev
, inode
->i_sb
);
931 case XFS_IOC_GOINGDOWN
: {
934 if (!capable(CAP_SYS_ADMIN
))
937 if (get_user(in
, (__uint32_t __user
*)arg
))
938 return -XFS_ERROR(EFAULT
);
940 error
= xfs_fs_goingdown(mp
, in
);
944 case XFS_IOC_ERROR_INJECTION
: {
945 xfs_error_injection_t in
;
947 if (!capable(CAP_SYS_ADMIN
))
950 if (copy_from_user(&in
, arg
, sizeof(in
)))
951 return -XFS_ERROR(EFAULT
);
953 error
= xfs_errortag_add(in
.errtag
, mp
);
957 case XFS_IOC_ERROR_CLEARALL
:
958 if (!capable(CAP_SYS_ADMIN
))
961 error
= xfs_errortag_clearall(mp
);
982 if (vp
->v_inode
.i_flags
& (S_IMMUTABLE
|S_APPEND
))
983 return -XFS_ERROR(EPERM
);
985 if (!(filp
->f_flags
& FMODE_WRITE
))
986 return -XFS_ERROR(EBADF
);
988 if (vp
->v_type
!= VREG
)
989 return -XFS_ERROR(EINVAL
);
991 if (copy_from_user(&bf
, arg
, sizeof(bf
)))
992 return -XFS_ERROR(EFAULT
);
994 if (filp
->f_flags
& (O_NDELAY
|O_NONBLOCK
))
995 attr_flags
|= ATTR_NONBLOCK
;
996 if (ioflags
& IO_INVIS
)
997 attr_flags
|= ATTR_DMI
;
999 error
= xfs_change_file_space(bdp
, cmd
, &bf
, filp
->f_pos
,
1010 xfs_fsop_bulkreq_t bulkreq
;
1011 int count
; /* # of records returned */
1012 xfs_ino_t inlast
; /* last inode number */
1016 /* done = 1 if there are more stats to get and if bulkstat */
1017 /* should be called again (unused here, but used in dmapi) */
1019 if (!capable(CAP_SYS_ADMIN
))
1022 if (XFS_FORCED_SHUTDOWN(mp
))
1023 return -XFS_ERROR(EIO
);
1025 if (copy_from_user(&bulkreq
, arg
, sizeof(xfs_fsop_bulkreq_t
)))
1026 return -XFS_ERROR(EFAULT
);
1028 if (copy_from_user(&inlast
, bulkreq
.lastip
, sizeof(__s64
)))
1029 return -XFS_ERROR(EFAULT
);
1031 if ((count
= bulkreq
.icount
) <= 0)
1032 return -XFS_ERROR(EINVAL
);
1034 if (cmd
== XFS_IOC_FSINUMBERS
)
1035 error
= xfs_inumbers(mp
, &inlast
, &count
,
1037 else if (cmd
== XFS_IOC_FSBULKSTAT_SINGLE
)
1038 error
= xfs_bulkstat_single(mp
, &inlast
,
1039 bulkreq
.ubuffer
, &done
);
1040 else { /* XFS_IOC_FSBULKSTAT */
1041 if (count
== 1 && inlast
!= 0) {
1043 error
= xfs_bulkstat_single(mp
, &inlast
,
1044 bulkreq
.ubuffer
, &done
);
1046 error
= xfs_bulkstat(mp
, &inlast
, &count
,
1047 (bulkstat_one_pf
)xfs_bulkstat_one
, NULL
,
1048 sizeof(xfs_bstat_t
), bulkreq
.ubuffer
,
1049 BULKSTAT_FG_QUICK
, &done
);
1056 if (bulkreq
.ocount
!= NULL
) {
1057 if (copy_to_user(bulkreq
.lastip
, &inlast
,
1059 return -XFS_ERROR(EFAULT
);
1061 if (copy_to_user(bulkreq
.ocount
, &count
, sizeof(count
)))
1062 return -XFS_ERROR(EFAULT
);
1069 xfs_ioc_fsgeometry_v1(
1073 xfs_fsop_geom_v1_t fsgeo
;
1076 error
= xfs_fs_geometry(mp
, (xfs_fsop_geom_t
*)&fsgeo
, 3);
1080 if (copy_to_user(arg
, &fsgeo
, sizeof(fsgeo
)))
1081 return -XFS_ERROR(EFAULT
);
1090 xfs_fsop_geom_t fsgeo
;
1093 error
= xfs_fs_geometry(mp
, &fsgeo
, 4);
1097 if (copy_to_user(arg
, &fsgeo
, sizeof(fsgeo
)))
1098 return -XFS_ERROR(EFAULT
);
1103 * Linux extended inode flags interface.
1105 #define LINUX_XFLAG_SYNC 0x00000008 /* Synchronous updates */
1106 #define LINUX_XFLAG_IMMUTABLE 0x00000010 /* Immutable file */
1107 #define LINUX_XFLAG_APPEND 0x00000020 /* writes to file may only append */
1108 #define LINUX_XFLAG_NODUMP 0x00000040 /* do not dump file */
1109 #define LINUX_XFLAG_NOATIME 0x00000080 /* do not update atime */
1112 xfs_merge_ioc_xflags(
1116 unsigned int xflags
= start
;
1118 if (flags
& LINUX_XFLAG_IMMUTABLE
)
1119 xflags
|= XFS_XFLAG_IMMUTABLE
;
1121 xflags
&= ~XFS_XFLAG_IMMUTABLE
;
1122 if (flags
& LINUX_XFLAG_APPEND
)
1123 xflags
|= XFS_XFLAG_APPEND
;
1125 xflags
&= ~XFS_XFLAG_APPEND
;
1126 if (flags
& LINUX_XFLAG_SYNC
)
1127 xflags
|= XFS_XFLAG_SYNC
;
1129 xflags
&= ~XFS_XFLAG_SYNC
;
1130 if (flags
& LINUX_XFLAG_NOATIME
)
1131 xflags
|= XFS_XFLAG_NOATIME
;
1133 xflags
&= ~XFS_XFLAG_NOATIME
;
1134 if (flags
& LINUX_XFLAG_NODUMP
)
1135 xflags
|= XFS_XFLAG_NODUMP
;
1137 xflags
&= ~XFS_XFLAG_NODUMP
;
1144 __uint16_t di_flags
)
1146 unsigned int flags
= 0;
1148 if (di_flags
& XFS_DIFLAG_IMMUTABLE
)
1149 flags
|= LINUX_XFLAG_IMMUTABLE
;
1150 if (di_flags
& XFS_DIFLAG_APPEND
)
1151 flags
|= LINUX_XFLAG_APPEND
;
1152 if (di_flags
& XFS_DIFLAG_SYNC
)
1153 flags
|= LINUX_XFLAG_SYNC
;
1154 if (di_flags
& XFS_DIFLAG_NOATIME
)
1155 flags
|= LINUX_XFLAG_NOATIME
;
1156 if (di_flags
& XFS_DIFLAG_NODUMP
)
1157 flags
|= LINUX_XFLAG_NODUMP
;
1176 case XFS_IOC_FSGETXATTR
: {
1177 va
.va_mask
= XFS_AT_XFLAGS
|XFS_AT_EXTSIZE
|XFS_AT_NEXTENTS
;
1178 VOP_GETATTR(vp
, &va
, 0, NULL
, error
);
1182 fa
.fsx_xflags
= va
.va_xflags
;
1183 fa
.fsx_extsize
= va
.va_extsize
;
1184 fa
.fsx_nextents
= va
.va_nextents
;
1186 if (copy_to_user(arg
, &fa
, sizeof(fa
)))
1187 return -XFS_ERROR(EFAULT
);
1191 case XFS_IOC_FSSETXATTR
: {
1192 if (copy_from_user(&fa
, arg
, sizeof(fa
)))
1193 return -XFS_ERROR(EFAULT
);
1196 if (filp
->f_flags
& (O_NDELAY
|O_NONBLOCK
))
1197 attr_flags
|= ATTR_NONBLOCK
;
1199 va
.va_mask
= XFS_AT_XFLAGS
| XFS_AT_EXTSIZE
;
1200 va
.va_xflags
= fa
.fsx_xflags
;
1201 va
.va_extsize
= fa
.fsx_extsize
;
1203 VOP_SETATTR(vp
, &va
, attr_flags
, NULL
, error
);
1205 vn_revalidate(vp
); /* update Linux inode flags */
1209 case XFS_IOC_FSGETXATTRA
: {
1210 va
.va_mask
= XFS_AT_XFLAGS
|XFS_AT_EXTSIZE
|XFS_AT_ANEXTENTS
;
1211 VOP_GETATTR(vp
, &va
, 0, NULL
, error
);
1215 fa
.fsx_xflags
= va
.va_xflags
;
1216 fa
.fsx_extsize
= va
.va_extsize
;
1217 fa
.fsx_nextents
= va
.va_anextents
;
1219 if (copy_to_user(arg
, &fa
, sizeof(fa
)))
1220 return -XFS_ERROR(EFAULT
);
1224 case XFS_IOC_GETXFLAGS
: {
1225 flags
= xfs_di2lxflags(ip
->i_d
.di_flags
);
1226 if (copy_to_user(arg
, &flags
, sizeof(flags
)))
1227 return -XFS_ERROR(EFAULT
);
1231 case XFS_IOC_SETXFLAGS
: {
1232 if (copy_from_user(&flags
, arg
, sizeof(flags
)))
1233 return -XFS_ERROR(EFAULT
);
1235 if (flags
& ~(LINUX_XFLAG_IMMUTABLE
| LINUX_XFLAG_APPEND
| \
1236 LINUX_XFLAG_NOATIME
| LINUX_XFLAG_NODUMP
| \
1238 return -XFS_ERROR(EOPNOTSUPP
);
1241 if (filp
->f_flags
& (O_NDELAY
|O_NONBLOCK
))
1242 attr_flags
|= ATTR_NONBLOCK
;
1244 va
.va_mask
= XFS_AT_XFLAGS
;
1245 va
.va_xflags
= xfs_merge_ioc_xflags(flags
,
1248 VOP_SETATTR(vp
, &va
, attr_flags
, NULL
, error
);
1250 vn_revalidate(vp
); /* update Linux inode flags */
1254 case XFS_IOC_GETVERSION
: {
1255 flags
= LINVFS_GET_IP(vp
)->i_generation
;
1256 if (copy_to_user(arg
, &flags
, sizeof(flags
)))
1257 return -XFS_ERROR(EFAULT
);
1278 if (copy_from_user(&bm
, arg
, sizeof(bm
)))
1279 return -XFS_ERROR(EFAULT
);
1281 if (bm
.bmv_count
< 2)
1282 return -XFS_ERROR(EINVAL
);
1284 iflags
= (cmd
== XFS_IOC_GETBMAPA
? BMV_IF_ATTRFORK
: 0);
1285 if (ioflags
& IO_INVIS
)
1286 iflags
|= BMV_IF_NO_DMAPI_READ
;
1288 error
= xfs_getbmap(bdp
, &bm
, (struct getbmap __user
*)arg
+1, iflags
);
1292 if (copy_to_user(arg
, &bm
, sizeof(bm
)))
1293 return -XFS_ERROR(EFAULT
);
1302 struct getbmapx bmx
;
1307 if (copy_from_user(&bmx
, arg
, sizeof(bmx
)))
1308 return -XFS_ERROR(EFAULT
);
1310 if (bmx
.bmv_count
< 2)
1311 return -XFS_ERROR(EINVAL
);
1314 * Map input getbmapx structure to a getbmap
1315 * structure for xfs_getbmap.
1317 GETBMAP_CONVERT(bmx
, bm
);
1319 iflags
= bmx
.bmv_iflags
;
1321 if (iflags
& (~BMV_IF_VALID
))
1322 return -XFS_ERROR(EINVAL
);
1324 iflags
|= BMV_IF_EXTENDED
;
1326 error
= xfs_getbmap(bdp
, &bm
, (struct getbmapx __user
*)arg
+1, iflags
);
1330 GETBMAP_CONVERT(bm
, bmx
);
1332 if (copy_to_user(arg
, &bmx
, sizeof(bmx
)))
1333 return -XFS_ERROR(EFAULT
);