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
24 #include "xfs_trans.h"
27 #include "xfs_alloc.h"
28 #include "xfs_quota.h"
29 #include "xfs_mount.h"
30 #include "xfs_bmap_btree.h"
31 #include "xfs_dinode.h"
32 #include "xfs_inode.h"
34 #include "xfs_rtalloc.h"
35 #include "xfs_error.h"
36 #include "xfs_itable.h"
39 #include "xfs_buf_item.h"
40 #include "xfs_utils.h"
41 #include "xfs_vnodeops.h"
42 #include "xfs_inode_item.h"
43 #include "xfs_trace.h"
45 #include <linux/capability.h>
46 #include <linux/xattr.h>
47 #include <linux/namei.h>
48 #include <linux/posix_acl.h>
49 #include <linux/security.h>
50 #include <linux/fiemap.h>
51 #include <linux/slab.h>
54 * Bring the timestamps in the XFS inode uptodate.
56 * Used before writing the inode to disk.
59 xfs_synchronize_times(
62 struct inode *inode = VFS_I(ip);
64 ip->i_d.di_atime.t_sec = (__int32_t)inode->i_atime.tv_sec;
65 ip->i_d.di_atime.t_nsec = (__int32_t)inode->i_atime.tv_nsec;
66 ip->i_d.di_ctime.t_sec = (__int32_t)inode->i_ctime.tv_sec;
67 ip->i_d.di_ctime.t_nsec = (__int32_t)inode->i_ctime.tv_nsec;
68 ip->i_d.di_mtime.t_sec = (__int32_t)inode->i_mtime.tv_sec;
69 ip->i_d.di_mtime.t_nsec = (__int32_t)inode->i_mtime.tv_nsec;
73 * If the linux inode is valid, mark it dirty.
74 * Used when committing a dirty inode into a transaction so that
75 * the inode will get written back by the linux code
78 xfs_mark_inode_dirty_sync(
81 struct inode *inode = VFS_I(ip);
83 if (!(inode->i_state & (I_WILL_FREE|I_FREEING)))
84 mark_inode_dirty_sync(inode);
91 struct inode *inode = VFS_I(ip);
93 if (!(inode->i_state & (I_WILL_FREE|I_FREEING)))
94 mark_inode_dirty(inode);
98 * Hook in SELinux. This is not quite correct yet, what we really need
99 * here (as we do for default ACLs) is a mechanism by which creation of
100 * these attrs can be journalled at inode creation time (along with the
101 * inode, of course, such that log replay can't cause these to be lost).
107 const struct qstr *qstr)
109 struct xfs_inode *ip = XFS_I(inode);
115 error = security_inode_init_security(inode, dir, qstr, (char **)&name,
118 if (error == -EOPNOTSUPP)
123 error = xfs_attr_set(ip, name, value, length, ATTR_SECURE);
132 struct xfs_name *namep,
133 struct dentry *dentry)
135 namep->name = dentry->d_name.name;
136 namep->len = dentry->d_name.len;
143 struct dentry *dentry)
145 struct xfs_name teardown;
148 * If we can't add the ACL or we fail in
149 * xfs_init_security we must back out.
150 * ENOSPC can hit here, among other things.
152 xfs_dentry_to_name(&teardown, dentry);
154 xfs_remove(XFS_I(dir), &teardown, XFS_I(inode));
161 struct dentry *dentry,
166 struct xfs_inode *ip = NULL;
167 struct posix_acl *default_acl = NULL;
168 struct xfs_name name;
172 * Irix uses Missed'em'V split, but doesn't want to see
173 * the upper 5 bits of (14bit) major.
175 if (S_ISCHR(mode) || S_ISBLK(mode)) {
176 if (unlikely(!sysv_valid_dev(rdev) || MAJOR(rdev) & ~0x1ff))
178 rdev = sysv_encode_dev(rdev);
183 if (IS_POSIXACL(dir)) {
184 default_acl = xfs_get_acl(dir, ACL_TYPE_DEFAULT);
185 if (IS_ERR(default_acl))
186 return PTR_ERR(default_acl);
189 mode &= ~current_umask();
192 xfs_dentry_to_name(&name, dentry);
193 error = xfs_create(XFS_I(dir), &name, mode, rdev, &ip);
199 error = xfs_init_security(inode, dir, &dentry->d_name);
201 goto out_cleanup_inode;
204 error = -xfs_inherit_acl(inode, default_acl);
206 goto out_cleanup_inode;
207 posix_acl_release(default_acl);
211 d_instantiate(dentry, inode);
215 xfs_cleanup_inode(dir, inode, dentry);
217 posix_acl_release(default_acl);
224 struct dentry *dentry,
226 struct nameidata *nd)
228 return xfs_vn_mknod(dir, dentry, mode, 0);
234 struct dentry *dentry,
237 return xfs_vn_mknod(dir, dentry, mode|S_IFDIR, 0);
240 STATIC struct dentry *
243 struct dentry *dentry,
244 struct nameidata *nd)
246 struct xfs_inode *cip;
247 struct xfs_name name;
250 if (dentry->d_name.len >= MAXNAMELEN)
251 return ERR_PTR(-ENAMETOOLONG);
253 xfs_dentry_to_name(&name, dentry);
254 error = xfs_lookup(XFS_I(dir), &name, &cip, NULL);
255 if (unlikely(error)) {
256 if (unlikely(error != ENOENT))
257 return ERR_PTR(-error);
262 return d_splice_alias(VFS_I(cip), dentry);
265 STATIC struct dentry *
268 struct dentry *dentry,
269 struct nameidata *nd)
271 struct xfs_inode *ip;
272 struct xfs_name xname;
273 struct xfs_name ci_name;
277 if (dentry->d_name.len >= MAXNAMELEN)
278 return ERR_PTR(-ENAMETOOLONG);
280 xfs_dentry_to_name(&xname, dentry);
281 error = xfs_lookup(XFS_I(dir), &xname, &ip, &ci_name);
282 if (unlikely(error)) {
283 if (unlikely(error != ENOENT))
284 return ERR_PTR(-error);
286 * call d_add(dentry, NULL) here when d_drop_negative_children
287 * is called in xfs_vn_mknod (ie. allow negative dentries
288 * with CI filesystems).
293 /* if exact match, just splice and exit */
295 return d_splice_alias(VFS_I(ip), dentry);
297 /* else case-insensitive match... */
298 dname.name = ci_name.name;
299 dname.len = ci_name.len;
300 dentry = d_add_ci(dentry, VFS_I(ip), &dname);
301 kmem_free(ci_name.name);
307 struct dentry *old_dentry,
309 struct dentry *dentry)
311 struct inode *inode = old_dentry->d_inode;
312 struct xfs_name name;
315 xfs_dentry_to_name(&name, dentry);
317 error = xfs_link(XFS_I(dir), XFS_I(inode), &name);
322 d_instantiate(dentry, inode);
329 struct dentry *dentry)
331 struct xfs_name name;
334 xfs_dentry_to_name(&name, dentry);
336 error = -xfs_remove(XFS_I(dir), &name, XFS_I(dentry->d_inode));
341 * With unlink, the VFS makes the dentry "negative": no inode,
342 * but still hashed. This is incompatible with case-insensitive
343 * mode, so invalidate (unhash) the dentry in CI-mode.
345 if (xfs_sb_version_hasasciici(&XFS_M(dir->i_sb)->m_sb))
346 d_invalidate(dentry);
353 struct dentry *dentry,
357 struct xfs_inode *cip = NULL;
358 struct xfs_name name;
363 (irix_symlink_mode ? 0777 & ~current_umask() : S_IRWXUGO);
364 xfs_dentry_to_name(&name, dentry);
366 error = xfs_symlink(XFS_I(dir), &name, symname, mode, &cip);
372 error = xfs_init_security(inode, dir, &dentry->d_name);
374 goto out_cleanup_inode;
376 d_instantiate(dentry, inode);
380 xfs_cleanup_inode(dir, inode, dentry);
388 struct dentry *odentry,
390 struct dentry *ndentry)
392 struct inode *new_inode = ndentry->d_inode;
393 struct xfs_name oname;
394 struct xfs_name nname;
396 xfs_dentry_to_name(&oname, odentry);
397 xfs_dentry_to_name(&nname, ndentry);
399 return -xfs_rename(XFS_I(odir), &oname, XFS_I(odentry->d_inode),
400 XFS_I(ndir), &nname, new_inode ?
401 XFS_I(new_inode) : NULL);
405 * careful here - this function can get called recursively, so
406 * we need to be very careful about how much stack we use.
407 * uio is kmalloced for this reason...
411 struct dentry *dentry,
412 struct nameidata *nd)
417 link = kmalloc(MAXPATHLEN+1, GFP_KERNEL);
421 error = -xfs_readlink(XFS_I(dentry->d_inode), link);
425 nd_set_link(nd, link);
431 nd_set_link(nd, ERR_PTR(error));
437 struct dentry *dentry,
438 struct nameidata *nd,
441 char *s = nd_get_link(nd);
449 struct vfsmount *mnt,
450 struct dentry *dentry,
453 struct inode *inode = dentry->d_inode;
454 struct xfs_inode *ip = XFS_I(inode);
455 struct xfs_mount *mp = ip->i_mount;
457 trace_xfs_getattr(ip);
459 if (XFS_FORCED_SHUTDOWN(mp))
460 return XFS_ERROR(EIO);
462 stat->size = XFS_ISIZE(ip);
463 stat->dev = inode->i_sb->s_dev;
464 stat->mode = ip->i_d.di_mode;
465 stat->nlink = ip->i_d.di_nlink;
466 stat->uid = ip->i_d.di_uid;
467 stat->gid = ip->i_d.di_gid;
468 stat->ino = ip->i_ino;
469 stat->atime = inode->i_atime;
470 stat->mtime = inode->i_mtime;
471 stat->ctime = inode->i_ctime;
473 XFS_FSB_TO_BB(mp, ip->i_d.di_nblocks + ip->i_delayed_blks);
476 switch (inode->i_mode & S_IFMT) {
479 stat->blksize = BLKDEV_IOSIZE;
480 stat->rdev = MKDEV(sysv_major(ip->i_df.if_u2.if_rdev) & 0x1ff,
481 sysv_minor(ip->i_df.if_u2.if_rdev));
484 if (XFS_IS_REALTIME_INODE(ip)) {
486 * If the file blocks are being allocated from a
487 * realtime volume, then return the inode's realtime
488 * extent size or the realtime volume's extent size.
491 xfs_get_extsz_hint(ip) << mp->m_sb.sb_blocklog;
493 stat->blksize = xfs_preferred_iosize(mp);
503 struct xfs_inode *ip,
507 xfs_mount_t *mp = ip->i_mount;
508 struct inode *inode = VFS_I(ip);
509 int mask = iattr->ia_valid;
512 uid_t uid = 0, iuid = 0;
513 gid_t gid = 0, igid = 0;
514 struct xfs_dquot *udqp = NULL, *gdqp = NULL;
515 struct xfs_dquot *olddquot1 = NULL, *olddquot2 = NULL;
517 trace_xfs_setattr(ip);
519 if (mp->m_flags & XFS_MOUNT_RDONLY)
520 return XFS_ERROR(EROFS);
522 if (XFS_FORCED_SHUTDOWN(mp))
523 return XFS_ERROR(EIO);
525 error = -inode_change_ok(inode, iattr);
527 return XFS_ERROR(error);
529 ASSERT((mask & ATTR_SIZE) == 0);
532 * If disk quotas is on, we make sure that the dquots do exist on disk,
533 * before we start any other transactions. Trying to do this later
534 * is messy. We don't care to take a readlock to look at the ids
535 * in inode here, because we can't hold it across the trans_reserve.
536 * If the IDs do change before we take the ilock, we're covered
537 * because the i_*dquot fields will get updated anyway.
539 if (XFS_IS_QUOTA_ON(mp) && (mask & (ATTR_UID|ATTR_GID))) {
542 if ((mask & ATTR_UID) && XFS_IS_UQUOTA_ON(mp)) {
544 qflags |= XFS_QMOPT_UQUOTA;
546 uid = ip->i_d.di_uid;
548 if ((mask & ATTR_GID) && XFS_IS_GQUOTA_ON(mp)) {
550 qflags |= XFS_QMOPT_GQUOTA;
552 gid = ip->i_d.di_gid;
556 * We take a reference when we initialize udqp and gdqp,
557 * so it is important that we never blindly double trip on
558 * the same variable. See xfs_create() for an example.
560 ASSERT(udqp == NULL);
561 ASSERT(gdqp == NULL);
562 error = xfs_qm_vop_dqalloc(ip, uid, gid, xfs_get_projid(ip),
563 qflags, &udqp, &gdqp);
568 tp = xfs_trans_alloc(mp, XFS_TRANS_SETATTR_NOT_SIZE);
569 error = xfs_trans_reserve(tp, 0, XFS_ICHANGE_LOG_RES(mp), 0, 0, 0);
573 xfs_ilock(ip, XFS_ILOCK_EXCL);
576 * Change file ownership. Must be the owner or privileged.
578 if (mask & (ATTR_UID|ATTR_GID)) {
580 * These IDs could have changed since we last looked at them.
581 * But, we're assured that if the ownership did change
582 * while we didn't have the inode locked, inode's dquot(s)
583 * would have changed also.
585 iuid = ip->i_d.di_uid;
586 igid = ip->i_d.di_gid;
587 gid = (mask & ATTR_GID) ? iattr->ia_gid : igid;
588 uid = (mask & ATTR_UID) ? iattr->ia_uid : iuid;
591 * Do a quota reservation only if uid/gid is actually
594 if (XFS_IS_QUOTA_RUNNING(mp) &&
595 ((XFS_IS_UQUOTA_ON(mp) && iuid != uid) ||
596 (XFS_IS_GQUOTA_ON(mp) && igid != gid))) {
598 error = xfs_qm_vop_chown_reserve(tp, ip, udqp, gdqp,
599 capable(CAP_FOWNER) ?
600 XFS_QMOPT_FORCE_RES : 0);
601 if (error) /* out of quota */
602 goto out_trans_cancel;
606 xfs_trans_ijoin(tp, ip);
609 * Change file ownership. Must be the owner or privileged.
611 if (mask & (ATTR_UID|ATTR_GID)) {
613 * CAP_FSETID overrides the following restrictions:
615 * The set-user-ID and set-group-ID bits of a file will be
616 * cleared upon successful return from chown()
618 if ((ip->i_d.di_mode & (S_ISUID|S_ISGID)) &&
619 !capable(CAP_FSETID))
620 ip->i_d.di_mode &= ~(S_ISUID|S_ISGID);
623 * Change the ownerships and register quota modifications
624 * in the transaction.
627 if (XFS_IS_QUOTA_RUNNING(mp) && XFS_IS_UQUOTA_ON(mp)) {
628 ASSERT(mask & ATTR_UID);
630 olddquot1 = xfs_qm_vop_chown(tp, ip,
631 &ip->i_udquot, udqp);
633 ip->i_d.di_uid = uid;
637 if (XFS_IS_QUOTA_RUNNING(mp) && XFS_IS_GQUOTA_ON(mp)) {
638 ASSERT(!XFS_IS_PQUOTA_ON(mp));
639 ASSERT(mask & ATTR_GID);
641 olddquot2 = xfs_qm_vop_chown(tp, ip,
642 &ip->i_gdquot, gdqp);
644 ip->i_d.di_gid = gid;
650 * Change file access modes.
652 if (mask & ATTR_MODE) {
653 umode_t mode = iattr->ia_mode;
655 if (!in_group_p(inode->i_gid) && !capable(CAP_FSETID))
658 ip->i_d.di_mode &= S_IFMT;
659 ip->i_d.di_mode |= mode & ~S_IFMT;
661 inode->i_mode &= S_IFMT;
662 inode->i_mode |= mode & ~S_IFMT;
666 * Change file access or modified times.
668 if (mask & ATTR_ATIME) {
669 inode->i_atime = iattr->ia_atime;
670 ip->i_d.di_atime.t_sec = iattr->ia_atime.tv_sec;
671 ip->i_d.di_atime.t_nsec = iattr->ia_atime.tv_nsec;
672 ip->i_update_core = 1;
674 if (mask & ATTR_CTIME) {
675 inode->i_ctime = iattr->ia_ctime;
676 ip->i_d.di_ctime.t_sec = iattr->ia_ctime.tv_sec;
677 ip->i_d.di_ctime.t_nsec = iattr->ia_ctime.tv_nsec;
678 ip->i_update_core = 1;
680 if (mask & ATTR_MTIME) {
681 inode->i_mtime = iattr->ia_mtime;
682 ip->i_d.di_mtime.t_sec = iattr->ia_mtime.tv_sec;
683 ip->i_d.di_mtime.t_nsec = iattr->ia_mtime.tv_nsec;
684 ip->i_update_core = 1;
687 xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
689 XFS_STATS_INC(xs_ig_attrchg);
691 if (mp->m_flags & XFS_MOUNT_WSYNC)
692 xfs_trans_set_sync(tp);
693 error = xfs_trans_commit(tp, 0);
695 xfs_iunlock(ip, XFS_ILOCK_EXCL);
698 * Release any dquot(s) the inode had kept before chown.
700 xfs_qm_dqrele(olddquot1);
701 xfs_qm_dqrele(olddquot2);
706 return XFS_ERROR(error);
709 * XXX(hch): Updating the ACL entries is not atomic vs the i_mode
710 * update. We could avoid this with linked transactions
711 * and passing down the transaction pointer all the way
712 * to attr_set. No previous user of the generic
713 * Posix ACL code seems to care about this issue either.
715 if ((mask & ATTR_MODE) && !(flags & XFS_ATTR_NOACL)) {
716 error = -xfs_acl_chmod(inode);
718 return XFS_ERROR(error);
724 xfs_trans_cancel(tp, 0);
725 xfs_iunlock(ip, XFS_ILOCK_EXCL);
733 * Truncate file. Must have write permission and not be a directory.
737 struct xfs_inode *ip,
741 struct xfs_mount *mp = ip->i_mount;
742 struct inode *inode = VFS_I(ip);
743 int mask = iattr->ia_valid;
744 struct xfs_trans *tp;
747 uint commit_flags = 0;
749 trace_xfs_setattr(ip);
751 if (mp->m_flags & XFS_MOUNT_RDONLY)
752 return XFS_ERROR(EROFS);
754 if (XFS_FORCED_SHUTDOWN(mp))
755 return XFS_ERROR(EIO);
757 error = -inode_change_ok(inode, iattr);
759 return XFS_ERROR(error);
761 ASSERT(S_ISREG(ip->i_d.di_mode));
762 ASSERT((mask & (ATTR_MODE|ATTR_UID|ATTR_GID|ATTR_ATIME|ATTR_ATIME_SET|
763 ATTR_MTIME_SET|ATTR_KILL_SUID|ATTR_KILL_SGID|
764 ATTR_KILL_PRIV|ATTR_TIMES_SET)) == 0);
766 lock_flags = XFS_ILOCK_EXCL;
767 if (!(flags & XFS_ATTR_NOLOCK))
768 lock_flags |= XFS_IOLOCK_EXCL;
769 xfs_ilock(ip, lock_flags);
772 * Short circuit the truncate case for zero length files.
774 if (iattr->ia_size == 0 &&
775 ip->i_size == 0 && ip->i_d.di_nextents == 0) {
776 if (!(mask & (ATTR_CTIME|ATTR_MTIME)))
780 * Use the regular setattr path to update the timestamps.
782 xfs_iunlock(ip, lock_flags);
783 iattr->ia_valid &= ~ATTR_SIZE;
784 return xfs_setattr_nonsize(ip, iattr, 0);
788 * Make sure that the dquots are attached to the inode.
790 error = xfs_qm_dqattach_locked(ip, 0);
795 * Now we can make the changes. Before we join the inode to the
796 * transaction, take care of the part of the truncation that must be
797 * done without the inode lock. This needs to be done before joining
798 * the inode to the transaction, because the inode cannot be unlocked
799 * once it is a part of the transaction.
801 if (iattr->ia_size > ip->i_size) {
803 * Do the first part of growing a file: zero any data in the
804 * last block that is beyond the old EOF. We need to do this
805 * before the inode is joined to the transaction to modify
808 error = xfs_zero_eof(ip, iattr->ia_size, ip->i_size);
812 xfs_iunlock(ip, XFS_ILOCK_EXCL);
813 lock_flags &= ~XFS_ILOCK_EXCL;
816 * We are going to log the inode size change in this transaction so
817 * any previous writes that are beyond the on disk EOF and the new
818 * EOF that have not been written out need to be written here. If we
819 * do not write the data out, we expose ourselves to the null files
822 * Only flush from the on disk size to the smaller of the in memory
823 * file size or the new size as that's the range we really care about
824 * here and prevents waiting for other data not within the range we
827 if (ip->i_size != ip->i_d.di_size && iattr->ia_size > ip->i_d.di_size) {
828 error = xfs_flush_pages(ip, ip->i_d.di_size, iattr->ia_size,
835 * Wait for all I/O to complete.
839 error = -block_truncate_page(inode->i_mapping, iattr->ia_size,
844 tp = xfs_trans_alloc(mp, XFS_TRANS_SETATTR_SIZE);
845 error = xfs_trans_reserve(tp, 0, XFS_ITRUNCATE_LOG_RES(mp), 0,
846 XFS_TRANS_PERM_LOG_RES,
847 XFS_ITRUNCATE_LOG_COUNT);
849 goto out_trans_cancel;
851 truncate_setsize(inode, iattr->ia_size);
853 commit_flags = XFS_TRANS_RELEASE_LOG_RES;
854 lock_flags |= XFS_ILOCK_EXCL;
856 xfs_ilock(ip, XFS_ILOCK_EXCL);
858 xfs_trans_ijoin(tp, ip);
861 * Only change the c/mtime if we are changing the size or we are
862 * explicitly asked to change it. This handles the semantic difference
863 * between truncate() and ftruncate() as implemented in the VFS.
865 * The regular truncate() case without ATTR_CTIME and ATTR_MTIME is a
866 * special case where we need to update the times despite not having
867 * these flags set. For all other operations the VFS set these flags
868 * explicitly if it wants a timestamp update.
870 if (iattr->ia_size != ip->i_size &&
871 (!(mask & (ATTR_CTIME | ATTR_MTIME)))) {
872 iattr->ia_ctime = iattr->ia_mtime =
873 current_fs_time(inode->i_sb);
874 mask |= ATTR_CTIME | ATTR_MTIME;
877 if (iattr->ia_size > ip->i_size) {
878 ip->i_d.di_size = iattr->ia_size;
879 ip->i_size = iattr->ia_size;
880 } else if (iattr->ia_size <= ip->i_size ||
881 (iattr->ia_size == 0 && ip->i_d.di_nextents)) {
883 * Signal a sync transaction unless we are truncating an
884 * already unlinked file on a wsync filesystem.
886 error = xfs_itruncate_finish(&tp, ip, iattr->ia_size,
888 ((ip->i_d.di_nlink != 0 ||
889 !(mp->m_flags & XFS_MOUNT_WSYNC))
892 goto out_trans_abort;
895 * Truncated "down", so we're removing references to old data
896 * here - if we delay flushing for a long time, we expose
897 * ourselves unduly to the notorious NULL files problem. So,
898 * we mark this inode and flush it when the file is closed,
899 * and do not wait the usual (long) time for writeout.
901 xfs_iflags_set(ip, XFS_ITRUNCATED);
904 if (mask & ATTR_CTIME) {
905 inode->i_ctime = iattr->ia_ctime;
906 ip->i_d.di_ctime.t_sec = iattr->ia_ctime.tv_sec;
907 ip->i_d.di_ctime.t_nsec = iattr->ia_ctime.tv_nsec;
908 ip->i_update_core = 1;
910 if (mask & ATTR_MTIME) {
911 inode->i_mtime = iattr->ia_mtime;
912 ip->i_d.di_mtime.t_sec = iattr->ia_mtime.tv_sec;
913 ip->i_d.di_mtime.t_nsec = iattr->ia_mtime.tv_nsec;
914 ip->i_update_core = 1;
917 xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
919 XFS_STATS_INC(xs_ig_attrchg);
921 if (mp->m_flags & XFS_MOUNT_WSYNC)
922 xfs_trans_set_sync(tp);
924 error = xfs_trans_commit(tp, XFS_TRANS_RELEASE_LOG_RES);
927 xfs_iunlock(ip, lock_flags);
931 commit_flags |= XFS_TRANS_ABORT;
933 xfs_trans_cancel(tp, commit_flags);
939 struct dentry *dentry,
942 if (iattr->ia_valid & ATTR_SIZE)
943 return -xfs_setattr_size(XFS_I(dentry->d_inode), iattr, 0);
944 return -xfs_setattr_nonsize(XFS_I(dentry->d_inode), iattr, 0);
947 #define XFS_FIEMAP_FLAGS (FIEMAP_FLAG_SYNC|FIEMAP_FLAG_XATTR)
950 * Call fiemap helper to fill in user data.
951 * Returns positive errors to xfs_getbmap.
956 struct getbmapx *bmv,
960 struct fiemap_extent_info *fieinfo = *arg;
961 u32 fiemap_flags = 0;
962 u64 logical, physical, length;
964 /* Do nothing for a hole */
965 if (bmv->bmv_block == -1LL)
968 logical = BBTOB(bmv->bmv_offset);
969 physical = BBTOB(bmv->bmv_block);
970 length = BBTOB(bmv->bmv_length);
972 if (bmv->bmv_oflags & BMV_OF_PREALLOC)
973 fiemap_flags |= FIEMAP_EXTENT_UNWRITTEN;
974 else if (bmv->bmv_oflags & BMV_OF_DELALLOC) {
975 fiemap_flags |= FIEMAP_EXTENT_DELALLOC;
976 physical = 0; /* no block yet */
978 if (bmv->bmv_oflags & BMV_OF_LAST)
979 fiemap_flags |= FIEMAP_EXTENT_LAST;
981 error = fiemap_fill_next_extent(fieinfo, logical, physical,
982 length, fiemap_flags);
985 *full = 1; /* user array now full */
994 struct fiemap_extent_info *fieinfo,
998 xfs_inode_t *ip = XFS_I(inode);
1002 error = fiemap_check_flags(fieinfo, XFS_FIEMAP_FLAGS);
1006 /* Set up bmap header for xfs internal routine */
1007 bm.bmv_offset = BTOBB(start);
1008 /* Special case for whole file */
1009 if (length == FIEMAP_MAX_OFFSET)
1010 bm.bmv_length = -1LL;
1012 bm.bmv_length = BTOBB(length);
1014 /* We add one because in getbmap world count includes the header */
1015 bm.bmv_count = !fieinfo->fi_extents_max ? MAXEXTNUM :
1016 fieinfo->fi_extents_max + 1;
1017 bm.bmv_count = min_t(__s32, bm.bmv_count,
1018 (PAGE_SIZE * 16 / sizeof(struct getbmapx)));
1019 bm.bmv_iflags = BMV_IF_PREALLOC | BMV_IF_NO_HOLES;
1020 if (fieinfo->fi_flags & FIEMAP_FLAG_XATTR)
1021 bm.bmv_iflags |= BMV_IF_ATTRFORK;
1022 if (!(fieinfo->fi_flags & FIEMAP_FLAG_SYNC))
1023 bm.bmv_iflags |= BMV_IF_DELALLOC;
1025 error = xfs_getbmap(ip, &bm, xfs_fiemap_format, fieinfo);
1032 static const struct inode_operations xfs_inode_operations = {
1033 .check_acl = xfs_check_acl,
1034 .getattr = xfs_vn_getattr,
1035 .setattr = xfs_vn_setattr,
1036 .setxattr = generic_setxattr,
1037 .getxattr = generic_getxattr,
1038 .removexattr = generic_removexattr,
1039 .listxattr = xfs_vn_listxattr,
1040 .fiemap = xfs_vn_fiemap,
1043 static const struct inode_operations xfs_dir_inode_operations = {
1044 .create = xfs_vn_create,
1045 .lookup = xfs_vn_lookup,
1046 .link = xfs_vn_link,
1047 .unlink = xfs_vn_unlink,
1048 .symlink = xfs_vn_symlink,
1049 .mkdir = xfs_vn_mkdir,
1051 * Yes, XFS uses the same method for rmdir and unlink.
1053 * There are some subtile differences deeper in the code,
1054 * but we use S_ISDIR to check for those.
1056 .rmdir = xfs_vn_unlink,
1057 .mknod = xfs_vn_mknod,
1058 .rename = xfs_vn_rename,
1059 .check_acl = xfs_check_acl,
1060 .getattr = xfs_vn_getattr,
1061 .setattr = xfs_vn_setattr,
1062 .setxattr = generic_setxattr,
1063 .getxattr = generic_getxattr,
1064 .removexattr = generic_removexattr,
1065 .listxattr = xfs_vn_listxattr,
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 .check_acl = xfs_check_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,
1093 static const struct inode_operations xfs_symlink_inode_operations = {
1094 .readlink = generic_readlink,
1095 .follow_link = xfs_vn_follow_link,
1096 .put_link = xfs_vn_put_link,
1097 .check_acl = xfs_check_acl,
1098 .getattr = xfs_vn_getattr,
1099 .setattr = xfs_vn_setattr,
1100 .setxattr = generic_setxattr,
1101 .getxattr = generic_getxattr,
1102 .removexattr = generic_removexattr,
1103 .listxattr = xfs_vn_listxattr,
1107 xfs_diflags_to_iflags(
1108 struct inode *inode,
1109 struct xfs_inode *ip)
1111 if (ip->i_d.di_flags & XFS_DIFLAG_IMMUTABLE)
1112 inode->i_flags |= S_IMMUTABLE;
1114 inode->i_flags &= ~S_IMMUTABLE;
1115 if (ip->i_d.di_flags & XFS_DIFLAG_APPEND)
1116 inode->i_flags |= S_APPEND;
1118 inode->i_flags &= ~S_APPEND;
1119 if (ip->i_d.di_flags & XFS_DIFLAG_SYNC)
1120 inode->i_flags |= S_SYNC;
1122 inode->i_flags &= ~S_SYNC;
1123 if (ip->i_d.di_flags & XFS_DIFLAG_NOATIME)
1124 inode->i_flags |= S_NOATIME;
1126 inode->i_flags &= ~S_NOATIME;
1130 * Initialize the Linux inode, set up the operation vectors and
1133 * When reading existing inodes from disk this is called directly
1134 * from xfs_iget, when creating a new inode it is called from
1135 * xfs_ialloc after setting up the inode.
1137 * We are always called with an uninitialised linux inode here.
1138 * We need to initialise the necessary fields and take a reference
1143 struct xfs_inode *ip)
1145 struct inode *inode = &ip->i_vnode;
1147 inode->i_ino = ip->i_ino;
1148 inode->i_state = I_NEW;
1150 inode_sb_list_add(inode);
1151 /* make the inode look hashed for the writeback code */
1152 hlist_add_fake(&inode->i_hash);
1154 inode->i_mode = ip->i_d.di_mode;
1155 inode->i_nlink = ip->i_d.di_nlink;
1156 inode->i_uid = ip->i_d.di_uid;
1157 inode->i_gid = ip->i_d.di_gid;
1159 switch (inode->i_mode & S_IFMT) {
1163 MKDEV(sysv_major(ip->i_df.if_u2.if_rdev) & 0x1ff,
1164 sysv_minor(ip->i_df.if_u2.if_rdev));
1171 inode->i_generation = ip->i_d.di_gen;
1172 i_size_write(inode, ip->i_d.di_size);
1173 inode->i_atime.tv_sec = ip->i_d.di_atime.t_sec;
1174 inode->i_atime.tv_nsec = ip->i_d.di_atime.t_nsec;
1175 inode->i_mtime.tv_sec = ip->i_d.di_mtime.t_sec;
1176 inode->i_mtime.tv_nsec = ip->i_d.di_mtime.t_nsec;
1177 inode->i_ctime.tv_sec = ip->i_d.di_ctime.t_sec;
1178 inode->i_ctime.tv_nsec = ip->i_d.di_ctime.t_nsec;
1179 xfs_diflags_to_iflags(inode, ip);
1181 switch (inode->i_mode & S_IFMT) {
1183 inode->i_op = &xfs_inode_operations;
1184 inode->i_fop = &xfs_file_operations;
1185 inode->i_mapping->a_ops = &xfs_address_space_operations;
1188 if (xfs_sb_version_hasasciici(&XFS_M(inode->i_sb)->m_sb))
1189 inode->i_op = &xfs_dir_ci_inode_operations;
1191 inode->i_op = &xfs_dir_inode_operations;
1192 inode->i_fop = &xfs_dir_file_operations;
1195 inode->i_op = &xfs_symlink_inode_operations;
1196 if (!(ip->i_df.if_flags & XFS_IFINLINE))
1197 inode->i_mapping->a_ops = &xfs_address_space_operations;
1200 inode->i_op = &xfs_inode_operations;
1201 init_special_inode(inode, inode->i_mode, inode->i_rdev);
1205 xfs_iflags_clear(ip, XFS_INEW);
1208 unlock_new_inode(inode);