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
22 #include "xfs_trans.h"
25 #include "xfs_alloc.h"
26 #include "xfs_quota.h"
27 #include "xfs_mount.h"
28 #include "xfs_bmap_btree.h"
29 #include "xfs_dinode.h"
30 #include "xfs_inode.h"
32 #include "xfs_rtalloc.h"
33 #include "xfs_error.h"
34 #include "xfs_itable.h"
36 #include "xfs_buf_item.h"
37 #include "xfs_utils.h"
38 #include "xfs_vnodeops.h"
39 #include "xfs_inode_item.h"
40 #include "xfs_trace.h"
41 #include "xfs_icache.h"
43 #include <linux/capability.h>
44 #include <linux/xattr.h>
45 #include <linux/namei.h>
46 #include <linux/posix_acl.h>
47 #include <linux/security.h>
48 #include <linux/fiemap.h>
49 #include <linux/slab.h>
54 const struct xattr
*xattr_array
,
57 const struct xattr
*xattr
;
58 struct xfs_inode
*ip
= XFS_I(inode
);
61 for (xattr
= xattr_array
; xattr
->name
!= NULL
; xattr
++) {
62 error
= xfs_attr_set(ip
, xattr
->name
, xattr
->value
,
63 xattr
->value_len
, ATTR_SECURE
);
71 * Hook in SELinux. This is not quite correct yet, what we really need
72 * here (as we do for default ACLs) is a mechanism by which creation of
73 * these attrs can be journalled at inode creation time (along with the
74 * inode, of course, such that log replay can't cause these to be lost).
81 const struct qstr
*qstr
)
83 return security_inode_init_security(inode
, dir
, qstr
,
84 &xfs_initxattrs
, NULL
);
89 struct xfs_name
*namep
,
90 struct dentry
*dentry
)
92 namep
->name
= dentry
->d_name
.name
;
93 namep
->len
= dentry
->d_name
.len
;
100 struct dentry
*dentry
)
102 struct xfs_name teardown
;
105 * If we can't add the ACL or we fail in
106 * xfs_init_security we must back out.
107 * ENOSPC can hit here, among other things.
109 xfs_dentry_to_name(&teardown
, dentry
);
111 xfs_remove(XFS_I(dir
), &teardown
, XFS_I(inode
));
118 struct dentry
*dentry
,
123 struct xfs_inode
*ip
= NULL
;
124 struct posix_acl
*default_acl
= NULL
;
125 struct xfs_name name
;
129 * Irix uses Missed'em'V split, but doesn't want to see
130 * the upper 5 bits of (14bit) major.
132 if (S_ISCHR(mode
) || S_ISBLK(mode
)) {
133 if (unlikely(!sysv_valid_dev(rdev
) || MAJOR(rdev
) & ~0x1ff))
135 rdev
= sysv_encode_dev(rdev
);
140 if (IS_POSIXACL(dir
)) {
141 default_acl
= xfs_get_acl(dir
, ACL_TYPE_DEFAULT
);
142 if (IS_ERR(default_acl
))
143 return PTR_ERR(default_acl
);
146 mode
&= ~current_umask();
149 xfs_dentry_to_name(&name
, dentry
);
150 error
= xfs_create(XFS_I(dir
), &name
, mode
, rdev
, &ip
);
156 error
= xfs_init_security(inode
, dir
, &dentry
->d_name
);
158 goto out_cleanup_inode
;
161 error
= -xfs_inherit_acl(inode
, default_acl
);
164 goto out_cleanup_inode
;
168 d_instantiate(dentry
, inode
);
172 xfs_cleanup_inode(dir
, inode
, dentry
);
174 posix_acl_release(default_acl
);
181 struct dentry
*dentry
,
185 return xfs_vn_mknod(dir
, dentry
, mode
, 0);
191 struct dentry
*dentry
,
194 return xfs_vn_mknod(dir
, dentry
, mode
|S_IFDIR
, 0);
197 STATIC
struct dentry
*
200 struct dentry
*dentry
,
203 struct xfs_inode
*cip
;
204 struct xfs_name name
;
207 if (dentry
->d_name
.len
>= MAXNAMELEN
)
208 return ERR_PTR(-ENAMETOOLONG
);
210 xfs_dentry_to_name(&name
, dentry
);
211 error
= xfs_lookup(XFS_I(dir
), &name
, &cip
, NULL
);
212 if (unlikely(error
)) {
213 if (unlikely(error
!= ENOENT
))
214 return ERR_PTR(-error
);
219 return d_splice_alias(VFS_I(cip
), dentry
);
222 STATIC
struct dentry
*
225 struct dentry
*dentry
,
228 struct xfs_inode
*ip
;
229 struct xfs_name xname
;
230 struct xfs_name ci_name
;
234 if (dentry
->d_name
.len
>= MAXNAMELEN
)
235 return ERR_PTR(-ENAMETOOLONG
);
237 xfs_dentry_to_name(&xname
, dentry
);
238 error
= xfs_lookup(XFS_I(dir
), &xname
, &ip
, &ci_name
);
239 if (unlikely(error
)) {
240 if (unlikely(error
!= ENOENT
))
241 return ERR_PTR(-error
);
243 * call d_add(dentry, NULL) here when d_drop_negative_children
244 * is called in xfs_vn_mknod (ie. allow negative dentries
245 * with CI filesystems).
250 /* if exact match, just splice and exit */
252 return d_splice_alias(VFS_I(ip
), dentry
);
254 /* else case-insensitive match... */
255 dname
.name
= ci_name
.name
;
256 dname
.len
= ci_name
.len
;
257 dentry
= d_add_ci(dentry
, VFS_I(ip
), &dname
);
258 kmem_free(ci_name
.name
);
264 struct dentry
*old_dentry
,
266 struct dentry
*dentry
)
268 struct inode
*inode
= old_dentry
->d_inode
;
269 struct xfs_name name
;
272 xfs_dentry_to_name(&name
, dentry
);
274 error
= xfs_link(XFS_I(dir
), XFS_I(inode
), &name
);
279 d_instantiate(dentry
, inode
);
286 struct dentry
*dentry
)
288 struct xfs_name name
;
291 xfs_dentry_to_name(&name
, dentry
);
293 error
= -xfs_remove(XFS_I(dir
), &name
, XFS_I(dentry
->d_inode
));
298 * With unlink, the VFS makes the dentry "negative": no inode,
299 * but still hashed. This is incompatible with case-insensitive
300 * mode, so invalidate (unhash) the dentry in CI-mode.
302 if (xfs_sb_version_hasasciici(&XFS_M(dir
->i_sb
)->m_sb
))
303 d_invalidate(dentry
);
310 struct dentry
*dentry
,
314 struct xfs_inode
*cip
= NULL
;
315 struct xfs_name name
;
320 (irix_symlink_mode
? 0777 & ~current_umask() : S_IRWXUGO
);
321 xfs_dentry_to_name(&name
, dentry
);
323 error
= xfs_symlink(XFS_I(dir
), &name
, symname
, mode
, &cip
);
329 error
= xfs_init_security(inode
, dir
, &dentry
->d_name
);
331 goto out_cleanup_inode
;
333 d_instantiate(dentry
, inode
);
337 xfs_cleanup_inode(dir
, inode
, dentry
);
345 struct dentry
*odentry
,
347 struct dentry
*ndentry
)
349 struct inode
*new_inode
= ndentry
->d_inode
;
350 struct xfs_name oname
;
351 struct xfs_name nname
;
353 xfs_dentry_to_name(&oname
, odentry
);
354 xfs_dentry_to_name(&nname
, ndentry
);
356 return -xfs_rename(XFS_I(odir
), &oname
, XFS_I(odentry
->d_inode
),
357 XFS_I(ndir
), &nname
, new_inode
?
358 XFS_I(new_inode
) : NULL
);
362 * careful here - this function can get called recursively, so
363 * we need to be very careful about how much stack we use.
364 * uio is kmalloced for this reason...
368 struct dentry
*dentry
,
369 struct nameidata
*nd
)
374 link
= kmalloc(MAXPATHLEN
+1, GFP_KERNEL
);
378 error
= -xfs_readlink(XFS_I(dentry
->d_inode
), link
);
382 nd_set_link(nd
, link
);
388 nd_set_link(nd
, ERR_PTR(error
));
394 struct dentry
*dentry
,
395 struct nameidata
*nd
,
398 char *s
= nd_get_link(nd
);
406 struct vfsmount
*mnt
,
407 struct dentry
*dentry
,
410 struct inode
*inode
= dentry
->d_inode
;
411 struct xfs_inode
*ip
= XFS_I(inode
);
412 struct xfs_mount
*mp
= ip
->i_mount
;
414 trace_xfs_getattr(ip
);
416 if (XFS_FORCED_SHUTDOWN(mp
))
417 return -XFS_ERROR(EIO
);
419 stat
->size
= XFS_ISIZE(ip
);
420 stat
->dev
= inode
->i_sb
->s_dev
;
421 stat
->mode
= ip
->i_d
.di_mode
;
422 stat
->nlink
= ip
->i_d
.di_nlink
;
423 stat
->uid
= ip
->i_d
.di_uid
;
424 stat
->gid
= ip
->i_d
.di_gid
;
425 stat
->ino
= ip
->i_ino
;
426 stat
->atime
= inode
->i_atime
;
427 stat
->mtime
= inode
->i_mtime
;
428 stat
->ctime
= inode
->i_ctime
;
430 XFS_FSB_TO_BB(mp
, ip
->i_d
.di_nblocks
+ ip
->i_delayed_blks
);
433 switch (inode
->i_mode
& S_IFMT
) {
436 stat
->blksize
= BLKDEV_IOSIZE
;
437 stat
->rdev
= MKDEV(sysv_major(ip
->i_df
.if_u2
.if_rdev
) & 0x1ff,
438 sysv_minor(ip
->i_df
.if_u2
.if_rdev
));
441 if (XFS_IS_REALTIME_INODE(ip
)) {
443 * If the file blocks are being allocated from a
444 * realtime volume, then return the inode's realtime
445 * extent size or the realtime volume's extent size.
448 xfs_get_extsz_hint(ip
) << mp
->m_sb
.sb_blocklog
;
450 stat
->blksize
= xfs_preferred_iosize(mp
);
460 struct xfs_inode
*ip
,
464 xfs_mount_t
*mp
= ip
->i_mount
;
465 struct inode
*inode
= VFS_I(ip
);
466 int mask
= iattr
->ia_valid
;
469 uid_t uid
= 0, iuid
= 0;
470 gid_t gid
= 0, igid
= 0;
471 struct xfs_dquot
*udqp
= NULL
, *gdqp
= NULL
;
472 struct xfs_dquot
*olddquot1
= NULL
, *olddquot2
= NULL
;
474 trace_xfs_setattr(ip
);
476 if (mp
->m_flags
& XFS_MOUNT_RDONLY
)
477 return XFS_ERROR(EROFS
);
479 if (XFS_FORCED_SHUTDOWN(mp
))
480 return XFS_ERROR(EIO
);
482 error
= -inode_change_ok(inode
, iattr
);
484 return XFS_ERROR(error
);
486 ASSERT((mask
& ATTR_SIZE
) == 0);
489 * If disk quotas is on, we make sure that the dquots do exist on disk,
490 * before we start any other transactions. Trying to do this later
491 * is messy. We don't care to take a readlock to look at the ids
492 * in inode here, because we can't hold it across the trans_reserve.
493 * If the IDs do change before we take the ilock, we're covered
494 * because the i_*dquot fields will get updated anyway.
496 if (XFS_IS_QUOTA_ON(mp
) && (mask
& (ATTR_UID
|ATTR_GID
))) {
499 if ((mask
& ATTR_UID
) && XFS_IS_UQUOTA_ON(mp
)) {
501 qflags
|= XFS_QMOPT_UQUOTA
;
503 uid
= ip
->i_d
.di_uid
;
505 if ((mask
& ATTR_GID
) && XFS_IS_GQUOTA_ON(mp
)) {
507 qflags
|= XFS_QMOPT_GQUOTA
;
509 gid
= ip
->i_d
.di_gid
;
513 * We take a reference when we initialize udqp and gdqp,
514 * so it is important that we never blindly double trip on
515 * the same variable. See xfs_create() for an example.
517 ASSERT(udqp
== NULL
);
518 ASSERT(gdqp
== NULL
);
519 error
= xfs_qm_vop_dqalloc(ip
, uid
, gid
, xfs_get_projid(ip
),
520 qflags
, &udqp
, &gdqp
);
525 tp
= xfs_trans_alloc(mp
, XFS_TRANS_SETATTR_NOT_SIZE
);
526 error
= xfs_trans_reserve(tp
, 0, XFS_ICHANGE_LOG_RES(mp
), 0, 0, 0);
530 xfs_ilock(ip
, XFS_ILOCK_EXCL
);
533 * Change file ownership. Must be the owner or privileged.
535 if (mask
& (ATTR_UID
|ATTR_GID
)) {
537 * These IDs could have changed since we last looked at them.
538 * But, we're assured that if the ownership did change
539 * while we didn't have the inode locked, inode's dquot(s)
540 * would have changed also.
542 iuid
= ip
->i_d
.di_uid
;
543 igid
= ip
->i_d
.di_gid
;
544 gid
= (mask
& ATTR_GID
) ? iattr
->ia_gid
: igid
;
545 uid
= (mask
& ATTR_UID
) ? iattr
->ia_uid
: iuid
;
548 * Do a quota reservation only if uid/gid is actually
551 if (XFS_IS_QUOTA_RUNNING(mp
) &&
552 ((XFS_IS_UQUOTA_ON(mp
) && iuid
!= uid
) ||
553 (XFS_IS_GQUOTA_ON(mp
) && igid
!= gid
))) {
555 error
= xfs_qm_vop_chown_reserve(tp
, ip
, udqp
, gdqp
,
556 capable(CAP_FOWNER
) ?
557 XFS_QMOPT_FORCE_RES
: 0);
558 if (error
) /* out of quota */
559 goto out_trans_cancel
;
563 xfs_trans_ijoin(tp
, ip
, 0);
566 * Change file ownership. Must be the owner or privileged.
568 if (mask
& (ATTR_UID
|ATTR_GID
)) {
570 * CAP_FSETID overrides the following restrictions:
572 * The set-user-ID and set-group-ID bits of a file will be
573 * cleared upon successful return from chown()
575 if ((ip
->i_d
.di_mode
& (S_ISUID
|S_ISGID
)) &&
576 !capable(CAP_FSETID
))
577 ip
->i_d
.di_mode
&= ~(S_ISUID
|S_ISGID
);
580 * Change the ownerships and register quota modifications
581 * in the transaction.
584 if (XFS_IS_QUOTA_RUNNING(mp
) && XFS_IS_UQUOTA_ON(mp
)) {
585 ASSERT(mask
& ATTR_UID
);
587 olddquot1
= xfs_qm_vop_chown(tp
, ip
,
588 &ip
->i_udquot
, udqp
);
590 ip
->i_d
.di_uid
= uid
;
594 if (XFS_IS_QUOTA_RUNNING(mp
) && XFS_IS_GQUOTA_ON(mp
)) {
595 ASSERT(!XFS_IS_PQUOTA_ON(mp
));
596 ASSERT(mask
& ATTR_GID
);
598 olddquot2
= xfs_qm_vop_chown(tp
, ip
,
599 &ip
->i_gdquot
, gdqp
);
601 ip
->i_d
.di_gid
= gid
;
607 * Change file access modes.
609 if (mask
& ATTR_MODE
) {
610 umode_t mode
= iattr
->ia_mode
;
612 if (!in_group_p(inode
->i_gid
) && !capable(CAP_FSETID
))
615 ip
->i_d
.di_mode
&= S_IFMT
;
616 ip
->i_d
.di_mode
|= mode
& ~S_IFMT
;
618 inode
->i_mode
&= S_IFMT
;
619 inode
->i_mode
|= mode
& ~S_IFMT
;
623 * Change file access or modified times.
625 if (mask
& ATTR_ATIME
) {
626 inode
->i_atime
= iattr
->ia_atime
;
627 ip
->i_d
.di_atime
.t_sec
= iattr
->ia_atime
.tv_sec
;
628 ip
->i_d
.di_atime
.t_nsec
= iattr
->ia_atime
.tv_nsec
;
630 if (mask
& ATTR_CTIME
) {
631 inode
->i_ctime
= iattr
->ia_ctime
;
632 ip
->i_d
.di_ctime
.t_sec
= iattr
->ia_ctime
.tv_sec
;
633 ip
->i_d
.di_ctime
.t_nsec
= iattr
->ia_ctime
.tv_nsec
;
635 if (mask
& ATTR_MTIME
) {
636 inode
->i_mtime
= iattr
->ia_mtime
;
637 ip
->i_d
.di_mtime
.t_sec
= iattr
->ia_mtime
.tv_sec
;
638 ip
->i_d
.di_mtime
.t_nsec
= iattr
->ia_mtime
.tv_nsec
;
641 xfs_trans_log_inode(tp
, ip
, XFS_ILOG_CORE
);
643 XFS_STATS_INC(xs_ig_attrchg
);
645 if (mp
->m_flags
& XFS_MOUNT_WSYNC
)
646 xfs_trans_set_sync(tp
);
647 error
= xfs_trans_commit(tp
, 0);
649 xfs_iunlock(ip
, XFS_ILOCK_EXCL
);
652 * Release any dquot(s) the inode had kept before chown.
654 xfs_qm_dqrele(olddquot1
);
655 xfs_qm_dqrele(olddquot2
);
660 return XFS_ERROR(error
);
663 * XXX(hch): Updating the ACL entries is not atomic vs the i_mode
664 * update. We could avoid this with linked transactions
665 * and passing down the transaction pointer all the way
666 * to attr_set. No previous user of the generic
667 * Posix ACL code seems to care about this issue either.
669 if ((mask
& ATTR_MODE
) && !(flags
& XFS_ATTR_NOACL
)) {
670 error
= -xfs_acl_chmod(inode
);
672 return XFS_ERROR(error
);
678 xfs_trans_cancel(tp
, 0);
679 xfs_iunlock(ip
, XFS_ILOCK_EXCL
);
687 * Truncate file. Must have write permission and not be a directory.
691 struct xfs_inode
*ip
,
695 struct xfs_mount
*mp
= ip
->i_mount
;
696 struct inode
*inode
= VFS_I(ip
);
697 int mask
= iattr
->ia_valid
;
698 xfs_off_t oldsize
, newsize
;
699 struct xfs_trans
*tp
;
702 uint commit_flags
= 0;
704 trace_xfs_setattr(ip
);
706 if (mp
->m_flags
& XFS_MOUNT_RDONLY
)
707 return XFS_ERROR(EROFS
);
709 if (XFS_FORCED_SHUTDOWN(mp
))
710 return XFS_ERROR(EIO
);
712 error
= -inode_change_ok(inode
, iattr
);
714 return XFS_ERROR(error
);
716 ASSERT(S_ISREG(ip
->i_d
.di_mode
));
717 ASSERT((mask
& (ATTR_MODE
|ATTR_UID
|ATTR_GID
|ATTR_ATIME
|ATTR_ATIME_SET
|
718 ATTR_MTIME_SET
|ATTR_KILL_SUID
|ATTR_KILL_SGID
|
719 ATTR_KILL_PRIV
|ATTR_TIMES_SET
)) == 0);
721 if (!(flags
& XFS_ATTR_NOLOCK
)) {
722 lock_flags
|= XFS_IOLOCK_EXCL
;
723 xfs_ilock(ip
, lock_flags
);
726 oldsize
= inode
->i_size
;
727 newsize
= iattr
->ia_size
;
730 * Short circuit the truncate case for zero length files.
732 if (newsize
== 0 && oldsize
== 0 && ip
->i_d
.di_nextents
== 0) {
733 if (!(mask
& (ATTR_CTIME
|ATTR_MTIME
)))
737 * Use the regular setattr path to update the timestamps.
739 xfs_iunlock(ip
, lock_flags
);
740 iattr
->ia_valid
&= ~ATTR_SIZE
;
741 return xfs_setattr_nonsize(ip
, iattr
, 0);
745 * Make sure that the dquots are attached to the inode.
747 error
= xfs_qm_dqattach(ip
, 0);
752 * Now we can make the changes. Before we join the inode to the
753 * transaction, take care of the part of the truncation that must be
754 * done without the inode lock. This needs to be done before joining
755 * the inode to the transaction, because the inode cannot be unlocked
756 * once it is a part of the transaction.
758 if (newsize
> oldsize
) {
760 * Do the first part of growing a file: zero any data in the
761 * last block that is beyond the old EOF. We need to do this
762 * before the inode is joined to the transaction to modify
765 error
= xfs_zero_eof(ip
, newsize
, oldsize
);
771 * We are going to log the inode size change in this transaction so
772 * any previous writes that are beyond the on disk EOF and the new
773 * EOF that have not been written out need to be written here. If we
774 * do not write the data out, we expose ourselves to the null files
777 * Only flush from the on disk size to the smaller of the in memory
778 * file size or the new size as that's the range we really care about
779 * here and prevents waiting for other data not within the range we
782 if (oldsize
!= ip
->i_d
.di_size
&& newsize
> ip
->i_d
.di_size
) {
783 error
= -filemap_write_and_wait_range(VFS_I(ip
)->i_mapping
,
784 ip
->i_d
.di_size
, newsize
);
790 * Wait for all direct I/O to complete.
792 inode_dio_wait(inode
);
794 error
= -block_truncate_page(inode
->i_mapping
, newsize
, xfs_get_blocks
);
798 tp
= xfs_trans_alloc(mp
, XFS_TRANS_SETATTR_SIZE
);
799 error
= xfs_trans_reserve(tp
, 0, XFS_ITRUNCATE_LOG_RES(mp
), 0,
800 XFS_TRANS_PERM_LOG_RES
,
801 XFS_ITRUNCATE_LOG_COUNT
);
803 goto out_trans_cancel
;
805 truncate_setsize(inode
, newsize
);
807 commit_flags
= XFS_TRANS_RELEASE_LOG_RES
;
808 lock_flags
|= XFS_ILOCK_EXCL
;
810 xfs_ilock(ip
, XFS_ILOCK_EXCL
);
812 xfs_trans_ijoin(tp
, ip
, 0);
815 * Only change the c/mtime if we are changing the size or we are
816 * explicitly asked to change it. This handles the semantic difference
817 * between truncate() and ftruncate() as implemented in the VFS.
819 * The regular truncate() case without ATTR_CTIME and ATTR_MTIME is a
820 * special case where we need to update the times despite not having
821 * these flags set. For all other operations the VFS set these flags
822 * explicitly if it wants a timestamp update.
824 if (newsize
!= oldsize
&& (!(mask
& (ATTR_CTIME
| ATTR_MTIME
)))) {
825 iattr
->ia_ctime
= iattr
->ia_mtime
=
826 current_fs_time(inode
->i_sb
);
827 mask
|= ATTR_CTIME
| ATTR_MTIME
;
831 * The first thing we do is set the size to new_size permanently on
832 * disk. This way we don't have to worry about anyone ever being able
833 * to look at the data being freed even in the face of a crash.
834 * What we're getting around here is the case where we free a block, it
835 * is allocated to another file, it is written to, and then we crash.
836 * If the new data gets written to the file but the log buffers
837 * containing the free and reallocation don't, then we'd end up with
838 * garbage in the blocks being freed. As long as we make the new size
839 * permanent before actually freeing any blocks it doesn't matter if
840 * they get written to.
842 ip
->i_d
.di_size
= newsize
;
843 xfs_trans_log_inode(tp
, ip
, XFS_ILOG_CORE
);
845 if (newsize
<= oldsize
) {
846 error
= xfs_itruncate_extents(&tp
, ip
, XFS_DATA_FORK
, newsize
);
848 goto out_trans_abort
;
851 * Truncated "down", so we're removing references to old data
852 * here - if we delay flushing for a long time, we expose
853 * ourselves unduly to the notorious NULL files problem. So,
854 * we mark this inode and flush it when the file is closed,
855 * and do not wait the usual (long) time for writeout.
857 xfs_iflags_set(ip
, XFS_ITRUNCATED
);
859 /* A truncate down always removes post-EOF blocks. */
860 xfs_inode_clear_eofblocks_tag(ip
);
863 if (mask
& ATTR_CTIME
) {
864 inode
->i_ctime
= iattr
->ia_ctime
;
865 ip
->i_d
.di_ctime
.t_sec
= iattr
->ia_ctime
.tv_sec
;
866 ip
->i_d
.di_ctime
.t_nsec
= iattr
->ia_ctime
.tv_nsec
;
868 if (mask
& ATTR_MTIME
) {
869 inode
->i_mtime
= iattr
->ia_mtime
;
870 ip
->i_d
.di_mtime
.t_sec
= iattr
->ia_mtime
.tv_sec
;
871 ip
->i_d
.di_mtime
.t_nsec
= iattr
->ia_mtime
.tv_nsec
;
874 xfs_trans_log_inode(tp
, ip
, XFS_ILOG_CORE
);
876 XFS_STATS_INC(xs_ig_attrchg
);
878 if (mp
->m_flags
& XFS_MOUNT_WSYNC
)
879 xfs_trans_set_sync(tp
);
881 error
= xfs_trans_commit(tp
, XFS_TRANS_RELEASE_LOG_RES
);
884 xfs_iunlock(ip
, lock_flags
);
888 commit_flags
|= XFS_TRANS_ABORT
;
890 xfs_trans_cancel(tp
, commit_flags
);
896 struct dentry
*dentry
,
899 if (iattr
->ia_valid
& ATTR_SIZE
)
900 return -xfs_setattr_size(XFS_I(dentry
->d_inode
), iattr
, 0);
901 return -xfs_setattr_nonsize(XFS_I(dentry
->d_inode
), iattr
, 0);
907 struct timespec
*now
,
910 struct xfs_inode
*ip
= XFS_I(inode
);
911 struct xfs_mount
*mp
= ip
->i_mount
;
912 struct xfs_trans
*tp
;
915 trace_xfs_update_time(ip
);
917 tp
= xfs_trans_alloc(mp
, XFS_TRANS_FSYNC_TS
);
918 error
= xfs_trans_reserve(tp
, 0, XFS_FSYNC_TS_LOG_RES(mp
), 0, 0, 0);
920 xfs_trans_cancel(tp
, 0);
924 xfs_ilock(ip
, XFS_ILOCK_EXCL
);
925 if (flags
& S_CTIME
) {
926 inode
->i_ctime
= *now
;
927 ip
->i_d
.di_ctime
.t_sec
= (__int32_t
)now
->tv_sec
;
928 ip
->i_d
.di_ctime
.t_nsec
= (__int32_t
)now
->tv_nsec
;
930 if (flags
& S_MTIME
) {
931 inode
->i_mtime
= *now
;
932 ip
->i_d
.di_mtime
.t_sec
= (__int32_t
)now
->tv_sec
;
933 ip
->i_d
.di_mtime
.t_nsec
= (__int32_t
)now
->tv_nsec
;
935 if (flags
& S_ATIME
) {
936 inode
->i_atime
= *now
;
937 ip
->i_d
.di_atime
.t_sec
= (__int32_t
)now
->tv_sec
;
938 ip
->i_d
.di_atime
.t_nsec
= (__int32_t
)now
->tv_nsec
;
940 xfs_trans_ijoin(tp
, ip
, XFS_ILOCK_EXCL
);
941 xfs_trans_log_inode(tp
, ip
, XFS_ILOG_TIMESTAMP
);
942 return -xfs_trans_commit(tp
, 0);
945 #define XFS_FIEMAP_FLAGS (FIEMAP_FLAG_SYNC|FIEMAP_FLAG_XATTR)
948 * Call fiemap helper to fill in user data.
949 * Returns positive errors to xfs_getbmap.
954 struct getbmapx
*bmv
,
958 struct fiemap_extent_info
*fieinfo
= *arg
;
959 u32 fiemap_flags
= 0;
960 u64 logical
, physical
, length
;
962 /* Do nothing for a hole */
963 if (bmv
->bmv_block
== -1LL)
966 logical
= BBTOB(bmv
->bmv_offset
);
967 physical
= BBTOB(bmv
->bmv_block
);
968 length
= BBTOB(bmv
->bmv_length
);
970 if (bmv
->bmv_oflags
& BMV_OF_PREALLOC
)
971 fiemap_flags
|= FIEMAP_EXTENT_UNWRITTEN
;
972 else if (bmv
->bmv_oflags
& BMV_OF_DELALLOC
) {
973 fiemap_flags
|= FIEMAP_EXTENT_DELALLOC
;
974 physical
= 0; /* no block yet */
976 if (bmv
->bmv_oflags
& BMV_OF_LAST
)
977 fiemap_flags
|= FIEMAP_EXTENT_LAST
;
979 error
= fiemap_fill_next_extent(fieinfo
, logical
, physical
,
980 length
, fiemap_flags
);
983 *full
= 1; /* user array now full */
992 struct fiemap_extent_info
*fieinfo
,
996 xfs_inode_t
*ip
= XFS_I(inode
);
1000 error
= fiemap_check_flags(fieinfo
, XFS_FIEMAP_FLAGS
);
1004 /* Set up bmap header for xfs internal routine */
1005 bm
.bmv_offset
= BTOBB(start
);
1006 /* Special case for whole file */
1007 if (length
== FIEMAP_MAX_OFFSET
)
1008 bm
.bmv_length
= -1LL;
1010 bm
.bmv_length
= BTOBB(length
);
1012 /* We add one because in getbmap world count includes the header */
1013 bm
.bmv_count
= !fieinfo
->fi_extents_max
? MAXEXTNUM
:
1014 fieinfo
->fi_extents_max
+ 1;
1015 bm
.bmv_count
= min_t(__s32
, bm
.bmv_count
,
1016 (PAGE_SIZE
* 16 / sizeof(struct getbmapx
)));
1017 bm
.bmv_iflags
= BMV_IF_PREALLOC
| BMV_IF_NO_HOLES
;
1018 if (fieinfo
->fi_flags
& FIEMAP_FLAG_XATTR
)
1019 bm
.bmv_iflags
|= BMV_IF_ATTRFORK
;
1020 if (!(fieinfo
->fi_flags
& FIEMAP_FLAG_SYNC
))
1021 bm
.bmv_iflags
|= BMV_IF_DELALLOC
;
1023 error
= xfs_getbmap(ip
, &bm
, xfs_fiemap_format
, fieinfo
);
1030 static const struct inode_operations xfs_inode_operations
= {
1031 .get_acl
= xfs_get_acl
,
1032 .getattr
= xfs_vn_getattr
,
1033 .setattr
= xfs_vn_setattr
,
1034 .setxattr
= generic_setxattr
,
1035 .getxattr
= generic_getxattr
,
1036 .removexattr
= generic_removexattr
,
1037 .listxattr
= xfs_vn_listxattr
,
1038 .fiemap
= xfs_vn_fiemap
,
1039 .update_time
= xfs_vn_update_time
,
1042 static const struct inode_operations xfs_dir_inode_operations
= {
1043 .create
= xfs_vn_create
,
1044 .lookup
= xfs_vn_lookup
,
1045 .link
= xfs_vn_link
,
1046 .unlink
= xfs_vn_unlink
,
1047 .symlink
= xfs_vn_symlink
,
1048 .mkdir
= xfs_vn_mkdir
,
1050 * Yes, XFS uses the same method for rmdir and unlink.
1052 * There are some subtile differences deeper in the code,
1053 * but we use S_ISDIR to check for those.
1055 .rmdir
= xfs_vn_unlink
,
1056 .mknod
= xfs_vn_mknod
,
1057 .rename
= xfs_vn_rename
,
1058 .get_acl
= xfs_get_acl
,
1059 .getattr
= xfs_vn_getattr
,
1060 .setattr
= xfs_vn_setattr
,
1061 .setxattr
= generic_setxattr
,
1062 .getxattr
= generic_getxattr
,
1063 .removexattr
= generic_removexattr
,
1064 .listxattr
= xfs_vn_listxattr
,
1065 .update_time
= xfs_vn_update_time
,
1068 static const struct inode_operations xfs_dir_ci_inode_operations
= {
1069 .create
= xfs_vn_create
,
1070 .lookup
= xfs_vn_ci_lookup
,
1071 .link
= xfs_vn_link
,
1072 .unlink
= xfs_vn_unlink
,
1073 .symlink
= xfs_vn_symlink
,
1074 .mkdir
= xfs_vn_mkdir
,
1076 * Yes, XFS uses the same method for rmdir and unlink.
1078 * There are some subtile differences deeper in the code,
1079 * but we use S_ISDIR to check for those.
1081 .rmdir
= xfs_vn_unlink
,
1082 .mknod
= xfs_vn_mknod
,
1083 .rename
= xfs_vn_rename
,
1084 .get_acl
= xfs_get_acl
,
1085 .getattr
= xfs_vn_getattr
,
1086 .setattr
= xfs_vn_setattr
,
1087 .setxattr
= generic_setxattr
,
1088 .getxattr
= generic_getxattr
,
1089 .removexattr
= generic_removexattr
,
1090 .listxattr
= xfs_vn_listxattr
,
1091 .update_time
= xfs_vn_update_time
,
1094 static const struct inode_operations xfs_symlink_inode_operations
= {
1095 .readlink
= generic_readlink
,
1096 .follow_link
= xfs_vn_follow_link
,
1097 .put_link
= xfs_vn_put_link
,
1098 .get_acl
= xfs_get_acl
,
1099 .getattr
= xfs_vn_getattr
,
1100 .setattr
= xfs_vn_setattr
,
1101 .setxattr
= generic_setxattr
,
1102 .getxattr
= generic_getxattr
,
1103 .removexattr
= generic_removexattr
,
1104 .listxattr
= xfs_vn_listxattr
,
1105 .update_time
= xfs_vn_update_time
,
1109 xfs_diflags_to_iflags(
1110 struct inode
*inode
,
1111 struct xfs_inode
*ip
)
1113 if (ip
->i_d
.di_flags
& XFS_DIFLAG_IMMUTABLE
)
1114 inode
->i_flags
|= S_IMMUTABLE
;
1116 inode
->i_flags
&= ~S_IMMUTABLE
;
1117 if (ip
->i_d
.di_flags
& XFS_DIFLAG_APPEND
)
1118 inode
->i_flags
|= S_APPEND
;
1120 inode
->i_flags
&= ~S_APPEND
;
1121 if (ip
->i_d
.di_flags
& XFS_DIFLAG_SYNC
)
1122 inode
->i_flags
|= S_SYNC
;
1124 inode
->i_flags
&= ~S_SYNC
;
1125 if (ip
->i_d
.di_flags
& XFS_DIFLAG_NOATIME
)
1126 inode
->i_flags
|= S_NOATIME
;
1128 inode
->i_flags
&= ~S_NOATIME
;
1132 * Initialize the Linux inode, set up the operation vectors and
1135 * When reading existing inodes from disk this is called directly
1136 * from xfs_iget, when creating a new inode it is called from
1137 * xfs_ialloc after setting up the inode.
1139 * We are always called with an uninitialised linux inode here.
1140 * We need to initialise the necessary fields and take a reference
1145 struct xfs_inode
*ip
)
1147 struct inode
*inode
= &ip
->i_vnode
;
1149 inode
->i_ino
= ip
->i_ino
;
1150 inode
->i_state
= I_NEW
;
1152 inode_sb_list_add(inode
);
1153 /* make the inode look hashed for the writeback code */
1154 hlist_add_fake(&inode
->i_hash
);
1156 inode
->i_mode
= ip
->i_d
.di_mode
;
1157 set_nlink(inode
, ip
->i_d
.di_nlink
);
1158 inode
->i_uid
= ip
->i_d
.di_uid
;
1159 inode
->i_gid
= ip
->i_d
.di_gid
;
1161 switch (inode
->i_mode
& S_IFMT
) {
1165 MKDEV(sysv_major(ip
->i_df
.if_u2
.if_rdev
) & 0x1ff,
1166 sysv_minor(ip
->i_df
.if_u2
.if_rdev
));
1173 inode
->i_generation
= ip
->i_d
.di_gen
;
1174 i_size_write(inode
, ip
->i_d
.di_size
);
1175 inode
->i_atime
.tv_sec
= ip
->i_d
.di_atime
.t_sec
;
1176 inode
->i_atime
.tv_nsec
= ip
->i_d
.di_atime
.t_nsec
;
1177 inode
->i_mtime
.tv_sec
= ip
->i_d
.di_mtime
.t_sec
;
1178 inode
->i_mtime
.tv_nsec
= ip
->i_d
.di_mtime
.t_nsec
;
1179 inode
->i_ctime
.tv_sec
= ip
->i_d
.di_ctime
.t_sec
;
1180 inode
->i_ctime
.tv_nsec
= ip
->i_d
.di_ctime
.t_nsec
;
1181 xfs_diflags_to_iflags(inode
, ip
);
1183 switch (inode
->i_mode
& S_IFMT
) {
1185 inode
->i_op
= &xfs_inode_operations
;
1186 inode
->i_fop
= &xfs_file_operations
;
1187 inode
->i_mapping
->a_ops
= &xfs_address_space_operations
;
1190 if (xfs_sb_version_hasasciici(&XFS_M(inode
->i_sb
)->m_sb
))
1191 inode
->i_op
= &xfs_dir_ci_inode_operations
;
1193 inode
->i_op
= &xfs_dir_inode_operations
;
1194 inode
->i_fop
= &xfs_dir_file_operations
;
1197 inode
->i_op
= &xfs_symlink_inode_operations
;
1198 if (!(ip
->i_df
.if_flags
& XFS_IFINLINE
))
1199 inode
->i_mapping
->a_ops
= &xfs_address_space_operations
;
1202 inode
->i_op
= &xfs_inode_operations
;
1203 init_special_inode(inode
, inode
->i_mode
, inode
->i_rdev
);
1208 * If there is no attribute fork no ACL can exist on this inode,
1209 * and it can't have any file capabilities attached to it either.
1211 if (!XFS_IFORK_Q(ip
)) {
1212 inode_has_no_xattr(inode
);
1213 cache_no_acl(inode
);
1216 xfs_iflags_clear(ip
, XFS_INEW
);
1219 unlock_new_inode(inode
);