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, else mark the dirty state
74 * in the XFS inode to make sure we pick it up when reclaiming the inode.
77 xfs_mark_inode_dirty_sync(
80 struct inode *inode = VFS_I(ip);
82 if (!(inode->i_state & (I_WILL_FREE|I_FREEING)))
83 mark_inode_dirty_sync(inode);
86 ip->i_update_core = 1;
94 struct inode *inode = VFS_I(ip);
96 if (!(inode->i_state & (I_WILL_FREE|I_FREEING)))
97 mark_inode_dirty(inode);
100 ip->i_update_core = 1;
106 int xfs_initxattrs(struct inode *inode, const struct xattr *xattr_array,
109 const struct xattr *xattr;
110 struct xfs_inode *ip = XFS_I(inode);
113 for (xattr = xattr_array; xattr->name != NULL; xattr++) {
114 error = xfs_attr_set(ip, xattr->name, xattr->value,
115 xattr->value_len, ATTR_SECURE);
123 * Hook in SELinux. This is not quite correct yet, what we really need
124 * here (as we do for default ACLs) is a mechanism by which creation of
125 * these attrs can be journalled at inode creation time (along with the
126 * inode, of course, such that log replay can't cause these to be lost).
133 const struct qstr *qstr)
135 return security_inode_init_security(inode, dir, qstr,
136 &xfs_initxattrs, NULL);
141 struct xfs_name *namep,
142 struct dentry *dentry)
144 namep->name = dentry->d_name.name;
145 namep->len = dentry->d_name.len;
152 struct dentry *dentry)
154 struct xfs_name teardown;
157 * If we can't add the ACL or we fail in
158 * xfs_init_security we must back out.
159 * ENOSPC can hit here, among other things.
161 xfs_dentry_to_name(&teardown, dentry);
163 xfs_remove(XFS_I(dir), &teardown, XFS_I(inode));
170 struct dentry *dentry,
175 struct xfs_inode *ip = NULL;
176 struct posix_acl *default_acl = NULL;
177 struct xfs_name name;
181 * Irix uses Missed'em'V split, but doesn't want to see
182 * the upper 5 bits of (14bit) major.
184 if (S_ISCHR(mode) || S_ISBLK(mode)) {
185 if (unlikely(!sysv_valid_dev(rdev) || MAJOR(rdev) & ~0x1ff))
187 rdev = sysv_encode_dev(rdev);
192 if (IS_POSIXACL(dir)) {
193 default_acl = xfs_get_acl(dir, ACL_TYPE_DEFAULT);
194 if (IS_ERR(default_acl))
195 return PTR_ERR(default_acl);
198 mode &= ~current_umask();
201 xfs_dentry_to_name(&name, dentry);
202 error = xfs_create(XFS_I(dir), &name, mode, rdev, &ip);
208 error = xfs_init_security(inode, dir, &dentry->d_name);
210 goto out_cleanup_inode;
213 error = -xfs_inherit_acl(inode, default_acl);
216 goto out_cleanup_inode;
220 d_instantiate(dentry, inode);
224 xfs_cleanup_inode(dir, inode, dentry);
226 posix_acl_release(default_acl);
233 struct dentry *dentry,
235 struct nameidata *nd)
237 return xfs_vn_mknod(dir, dentry, mode, 0);
243 struct dentry *dentry,
246 return xfs_vn_mknod(dir, dentry, mode|S_IFDIR, 0);
249 STATIC struct dentry *
252 struct dentry *dentry,
253 struct nameidata *nd)
255 struct xfs_inode *cip;
256 struct xfs_name name;
259 if (dentry->d_name.len >= MAXNAMELEN)
260 return ERR_PTR(-ENAMETOOLONG);
262 xfs_dentry_to_name(&name, dentry);
263 error = xfs_lookup(XFS_I(dir), &name, &cip, NULL);
264 if (unlikely(error)) {
265 if (unlikely(error != ENOENT))
266 return ERR_PTR(-error);
271 return d_splice_alias(VFS_I(cip), dentry);
274 STATIC struct dentry *
277 struct dentry *dentry,
278 struct nameidata *nd)
280 struct xfs_inode *ip;
281 struct xfs_name xname;
282 struct xfs_name ci_name;
286 if (dentry->d_name.len >= MAXNAMELEN)
287 return ERR_PTR(-ENAMETOOLONG);
289 xfs_dentry_to_name(&xname, dentry);
290 error = xfs_lookup(XFS_I(dir), &xname, &ip, &ci_name);
291 if (unlikely(error)) {
292 if (unlikely(error != ENOENT))
293 return ERR_PTR(-error);
295 * call d_add(dentry, NULL) here when d_drop_negative_children
296 * is called in xfs_vn_mknod (ie. allow negative dentries
297 * with CI filesystems).
302 /* if exact match, just splice and exit */
304 return d_splice_alias(VFS_I(ip), dentry);
306 /* else case-insensitive match... */
307 dname.name = ci_name.name;
308 dname.len = ci_name.len;
309 dentry = d_add_ci(dentry, VFS_I(ip), &dname);
310 kmem_free(ci_name.name);
316 struct dentry *old_dentry,
318 struct dentry *dentry)
320 struct inode *inode = old_dentry->d_inode;
321 struct xfs_name name;
324 xfs_dentry_to_name(&name, dentry);
326 error = xfs_link(XFS_I(dir), XFS_I(inode), &name);
331 d_instantiate(dentry, inode);
338 struct dentry *dentry)
340 struct xfs_name name;
343 xfs_dentry_to_name(&name, dentry);
345 error = -xfs_remove(XFS_I(dir), &name, XFS_I(dentry->d_inode));
350 * With unlink, the VFS makes the dentry "negative": no inode,
351 * but still hashed. This is incompatible with case-insensitive
352 * mode, so invalidate (unhash) the dentry in CI-mode.
354 if (xfs_sb_version_hasasciici(&XFS_M(dir->i_sb)->m_sb))
355 d_invalidate(dentry);
362 struct dentry *dentry,
366 struct xfs_inode *cip = NULL;
367 struct xfs_name name;
372 (irix_symlink_mode ? 0777 & ~current_umask() : S_IRWXUGO);
373 xfs_dentry_to_name(&name, dentry);
375 error = xfs_symlink(XFS_I(dir), &name, symname, mode, &cip);
381 error = xfs_init_security(inode, dir, &dentry->d_name);
383 goto out_cleanup_inode;
385 d_instantiate(dentry, inode);
389 xfs_cleanup_inode(dir, inode, dentry);
397 struct dentry *odentry,
399 struct dentry *ndentry)
401 struct inode *new_inode = ndentry->d_inode;
402 struct xfs_name oname;
403 struct xfs_name nname;
405 xfs_dentry_to_name(&oname, odentry);
406 xfs_dentry_to_name(&nname, ndentry);
408 return -xfs_rename(XFS_I(odir), &oname, XFS_I(odentry->d_inode),
409 XFS_I(ndir), &nname, new_inode ?
410 XFS_I(new_inode) : NULL);
414 * careful here - this function can get called recursively, so
415 * we need to be very careful about how much stack we use.
416 * uio is kmalloced for this reason...
420 struct dentry *dentry,
421 struct nameidata *nd)
426 link = kmalloc(MAXPATHLEN+1, GFP_KERNEL);
430 error = -xfs_readlink(XFS_I(dentry->d_inode), link);
434 nd_set_link(nd, link);
440 nd_set_link(nd, ERR_PTR(error));
446 struct dentry *dentry,
447 struct nameidata *nd,
450 char *s = nd_get_link(nd);
458 struct vfsmount *mnt,
459 struct dentry *dentry,
462 struct inode *inode = dentry->d_inode;
463 struct xfs_inode *ip = XFS_I(inode);
464 struct xfs_mount *mp = ip->i_mount;
466 trace_xfs_getattr(ip);
468 if (XFS_FORCED_SHUTDOWN(mp))
469 return -XFS_ERROR(EIO);
471 stat->size = XFS_ISIZE(ip);
472 stat->dev = inode->i_sb->s_dev;
473 stat->mode = ip->i_d.di_mode;
474 stat->nlink = ip->i_d.di_nlink;
475 stat->uid = ip->i_d.di_uid;
476 stat->gid = ip->i_d.di_gid;
477 stat->ino = ip->i_ino;
478 stat->atime = inode->i_atime;
479 stat->mtime = inode->i_mtime;
480 stat->ctime = inode->i_ctime;
482 XFS_FSB_TO_BB(mp, ip->i_d.di_nblocks + ip->i_delayed_blks);
485 switch (inode->i_mode & S_IFMT) {
488 stat->blksize = BLKDEV_IOSIZE;
489 stat->rdev = MKDEV(sysv_major(ip->i_df.if_u2.if_rdev) & 0x1ff,
490 sysv_minor(ip->i_df.if_u2.if_rdev));
493 if (XFS_IS_REALTIME_INODE(ip)) {
495 * If the file blocks are being allocated from a
496 * realtime volume, then return the inode's realtime
497 * extent size or the realtime volume's extent size.
500 xfs_get_extsz_hint(ip) << mp->m_sb.sb_blocklog;
502 stat->blksize = xfs_preferred_iosize(mp);
512 struct xfs_trans *tp,
513 struct xfs_inode *ip,
516 struct inode *inode = VFS_I(ip);
517 umode_t mode = iattr->ia_mode;
520 ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL));
522 if (!in_group_p(inode->i_gid) && !capable(CAP_FSETID))
525 ip->i_d.di_mode &= S_IFMT;
526 ip->i_d.di_mode |= mode & ~S_IFMT;
528 inode->i_mode &= S_IFMT;
529 inode->i_mode |= mode & ~S_IFMT;
534 struct xfs_inode *ip,
538 xfs_mount_t *mp = ip->i_mount;
539 struct inode *inode = VFS_I(ip);
540 int mask = iattr->ia_valid;
543 uid_t uid = 0, iuid = 0;
544 gid_t gid = 0, igid = 0;
545 struct xfs_dquot *udqp = NULL, *gdqp = NULL;
546 struct xfs_dquot *olddquot1 = NULL, *olddquot2 = NULL;
548 trace_xfs_setattr(ip);
550 if (mp->m_flags & XFS_MOUNT_RDONLY)
551 return XFS_ERROR(EROFS);
553 if (XFS_FORCED_SHUTDOWN(mp))
554 return XFS_ERROR(EIO);
556 error = -inode_change_ok(inode, iattr);
558 return XFS_ERROR(error);
560 ASSERT((mask & ATTR_SIZE) == 0);
563 * If disk quotas is on, we make sure that the dquots do exist on disk,
564 * before we start any other transactions. Trying to do this later
565 * is messy. We don't care to take a readlock to look at the ids
566 * in inode here, because we can't hold it across the trans_reserve.
567 * If the IDs do change before we take the ilock, we're covered
568 * because the i_*dquot fields will get updated anyway.
570 if (XFS_IS_QUOTA_ON(mp) && (mask & (ATTR_UID|ATTR_GID))) {
573 if ((mask & ATTR_UID) && XFS_IS_UQUOTA_ON(mp)) {
575 qflags |= XFS_QMOPT_UQUOTA;
577 uid = ip->i_d.di_uid;
579 if ((mask & ATTR_GID) && XFS_IS_GQUOTA_ON(mp)) {
581 qflags |= XFS_QMOPT_GQUOTA;
583 gid = ip->i_d.di_gid;
587 * We take a reference when we initialize udqp and gdqp,
588 * so it is important that we never blindly double trip on
589 * the same variable. See xfs_create() for an example.
591 ASSERT(udqp == NULL);
592 ASSERT(gdqp == NULL);
593 error = xfs_qm_vop_dqalloc(ip, uid, gid, xfs_get_projid(ip),
594 qflags, &udqp, &gdqp);
599 tp = xfs_trans_alloc(mp, XFS_TRANS_SETATTR_NOT_SIZE);
600 error = xfs_trans_reserve(tp, 0, XFS_ICHANGE_LOG_RES(mp), 0, 0, 0);
604 xfs_ilock(ip, XFS_ILOCK_EXCL);
607 * Change file ownership. Must be the owner or privileged.
609 if (mask & (ATTR_UID|ATTR_GID)) {
611 * These IDs could have changed since we last looked at them.
612 * But, we're assured that if the ownership did change
613 * while we didn't have the inode locked, inode's dquot(s)
614 * would have changed also.
616 iuid = ip->i_d.di_uid;
617 igid = ip->i_d.di_gid;
618 gid = (mask & ATTR_GID) ? iattr->ia_gid : igid;
619 uid = (mask & ATTR_UID) ? iattr->ia_uid : iuid;
622 * Do a quota reservation only if uid/gid is actually
625 if (XFS_IS_QUOTA_RUNNING(mp) &&
626 ((XFS_IS_UQUOTA_ON(mp) && iuid != uid) ||
627 (XFS_IS_GQUOTA_ON(mp) && igid != gid))) {
629 error = xfs_qm_vop_chown_reserve(tp, ip, udqp, gdqp,
630 capable(CAP_FOWNER) ?
631 XFS_QMOPT_FORCE_RES : 0);
632 if (error) /* out of quota */
633 goto out_trans_cancel;
637 xfs_trans_ijoin(tp, ip, 0);
640 * Change file ownership. Must be the owner or privileged.
642 if (mask & (ATTR_UID|ATTR_GID)) {
644 * CAP_FSETID overrides the following restrictions:
646 * The set-user-ID and set-group-ID bits of a file will be
647 * cleared upon successful return from chown()
649 if ((ip->i_d.di_mode & (S_ISUID|S_ISGID)) &&
650 !capable(CAP_FSETID))
651 ip->i_d.di_mode &= ~(S_ISUID|S_ISGID);
654 * Change the ownerships and register quota modifications
655 * in the transaction.
658 if (XFS_IS_QUOTA_RUNNING(mp) && XFS_IS_UQUOTA_ON(mp)) {
659 ASSERT(mask & ATTR_UID);
661 olddquot1 = xfs_qm_vop_chown(tp, ip,
662 &ip->i_udquot, udqp);
664 ip->i_d.di_uid = uid;
668 if (XFS_IS_QUOTA_RUNNING(mp) && XFS_IS_GQUOTA_ON(mp)) {
669 ASSERT(!XFS_IS_PQUOTA_ON(mp));
670 ASSERT(mask & ATTR_GID);
672 olddquot2 = xfs_qm_vop_chown(tp, ip,
673 &ip->i_gdquot, gdqp);
675 ip->i_d.di_gid = gid;
681 * Change file access modes.
683 if (mask & ATTR_MODE)
684 xfs_setattr_mode(tp, ip, iattr);
687 * Change file access or modified times.
689 if (mask & ATTR_ATIME) {
690 inode->i_atime = iattr->ia_atime;
691 ip->i_d.di_atime.t_sec = iattr->ia_atime.tv_sec;
692 ip->i_d.di_atime.t_nsec = iattr->ia_atime.tv_nsec;
693 ip->i_update_core = 1;
695 if (mask & ATTR_CTIME) {
696 inode->i_ctime = iattr->ia_ctime;
697 ip->i_d.di_ctime.t_sec = iattr->ia_ctime.tv_sec;
698 ip->i_d.di_ctime.t_nsec = iattr->ia_ctime.tv_nsec;
699 ip->i_update_core = 1;
701 if (mask & ATTR_MTIME) {
702 inode->i_mtime = iattr->ia_mtime;
703 ip->i_d.di_mtime.t_sec = iattr->ia_mtime.tv_sec;
704 ip->i_d.di_mtime.t_nsec = iattr->ia_mtime.tv_nsec;
705 ip->i_update_core = 1;
708 xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
710 XFS_STATS_INC(xs_ig_attrchg);
712 if (mp->m_flags & XFS_MOUNT_WSYNC)
713 xfs_trans_set_sync(tp);
714 error = xfs_trans_commit(tp, 0);
716 xfs_iunlock(ip, XFS_ILOCK_EXCL);
719 * Release any dquot(s) the inode had kept before chown.
721 xfs_qm_dqrele(olddquot1);
722 xfs_qm_dqrele(olddquot2);
727 return XFS_ERROR(error);
730 * XXX(hch): Updating the ACL entries is not atomic vs the i_mode
731 * update. We could avoid this with linked transactions
732 * and passing down the transaction pointer all the way
733 * to attr_set. No previous user of the generic
734 * Posix ACL code seems to care about this issue either.
736 if ((mask & ATTR_MODE) && !(flags & XFS_ATTR_NOACL)) {
737 error = -xfs_acl_chmod(inode);
739 return XFS_ERROR(error);
745 xfs_trans_cancel(tp, 0);
746 xfs_iunlock(ip, XFS_ILOCK_EXCL);
754 * Truncate file. Must have write permission and not be a directory.
758 struct xfs_inode *ip,
762 struct xfs_mount *mp = ip->i_mount;
763 struct inode *inode = VFS_I(ip);
764 int mask = iattr->ia_valid;
765 struct xfs_trans *tp;
768 uint commit_flags = 0;
769 bool did_zeroing = false;
771 trace_xfs_setattr(ip);
773 if (mp->m_flags & XFS_MOUNT_RDONLY)
774 return XFS_ERROR(EROFS);
776 if (XFS_FORCED_SHUTDOWN(mp))
777 return XFS_ERROR(EIO);
779 error = -inode_change_ok(inode, iattr);
781 return XFS_ERROR(error);
783 ASSERT(S_ISREG(ip->i_d.di_mode));
784 ASSERT((mask & (ATTR_UID|ATTR_GID|ATTR_ATIME|ATTR_ATIME_SET|
785 ATTR_MTIME_SET|ATTR_KILL_PRIV|ATTR_TIMES_SET)) == 0);
787 lock_flags = XFS_ILOCK_EXCL;
788 if (!(flags & XFS_ATTR_NOLOCK))
789 lock_flags |= XFS_IOLOCK_EXCL;
790 xfs_ilock(ip, lock_flags);
793 * Short circuit the truncate case for zero length files.
795 if (iattr->ia_size == 0 &&
796 ip->i_size == 0 && ip->i_d.di_nextents == 0) {
797 if (!(mask & (ATTR_CTIME|ATTR_MTIME)))
801 * Use the regular setattr path to update the timestamps.
803 xfs_iunlock(ip, lock_flags);
804 iattr->ia_valid &= ~ATTR_SIZE;
805 return xfs_setattr_nonsize(ip, iattr, 0);
809 * Make sure that the dquots are attached to the inode.
811 error = xfs_qm_dqattach_locked(ip, 0);
816 * File data changes must be complete before we start the transaction to
817 * modify the inode. This needs to be done before joining the inode to
818 * the transaction because the inode cannot be unlocked once it is a
819 * part of the transaction.
821 * Start with zeroing any data block beyond EOF that we may expose on
824 if (iattr->ia_size > ip->i_size) {
825 error = xfs_zero_eof(ip, iattr->ia_size, ip->i_size, &did_zeroing);
829 xfs_iunlock(ip, XFS_ILOCK_EXCL);
830 lock_flags &= ~XFS_ILOCK_EXCL;
833 * We are going to log the inode size change in this transaction so
834 * any previous writes that are beyond the on disk EOF and the new
835 * EOF that have not been written out need to be written here. If we
836 * do not write the data out, we expose ourselves to the null files
837 * problem. Note that this includes any block zeroing we did above;
838 * otherwise those blocks may not be zeroed after a crash.
840 if (iattr->ia_size > ip->i_d.di_size &&
841 (ip->i_size != ip->i_d.di_size || did_zeroing)) {
842 error = xfs_flush_pages(ip, ip->i_d.di_size, iattr->ia_size, 0,
848 /* Now wait for all direct I/O to complete. */
849 inode_dio_wait(inode);
851 error = -block_truncate_page(inode->i_mapping, iattr->ia_size,
856 tp = xfs_trans_alloc(mp, XFS_TRANS_SETATTR_SIZE);
857 error = xfs_trans_reserve(tp, 0, XFS_ITRUNCATE_LOG_RES(mp), 0,
858 XFS_TRANS_PERM_LOG_RES,
859 XFS_ITRUNCATE_LOG_COUNT);
861 goto out_trans_cancel;
863 truncate_setsize(inode, iattr->ia_size);
865 commit_flags = XFS_TRANS_RELEASE_LOG_RES;
866 lock_flags |= XFS_ILOCK_EXCL;
868 xfs_ilock(ip, XFS_ILOCK_EXCL);
870 xfs_trans_ijoin(tp, ip, 0);
873 * Only change the c/mtime if we are changing the size or we are
874 * explicitly asked to change it. This handles the semantic difference
875 * between truncate() and ftruncate() as implemented in the VFS.
877 * The regular truncate() case without ATTR_CTIME and ATTR_MTIME is a
878 * special case where we need to update the times despite not having
879 * these flags set. For all other operations the VFS set these flags
880 * explicitly if it wants a timestamp update.
882 if (iattr->ia_size != ip->i_size &&
883 (!(mask & (ATTR_CTIME | ATTR_MTIME)))) {
884 iattr->ia_ctime = iattr->ia_mtime =
885 current_fs_time(inode->i_sb);
886 mask |= ATTR_CTIME | ATTR_MTIME;
889 if (iattr->ia_size > ip->i_size) {
890 ip->i_d.di_size = iattr->ia_size;
891 ip->i_size = iattr->ia_size;
892 } else if (iattr->ia_size <= ip->i_size ||
893 (iattr->ia_size == 0 && ip->i_d.di_nextents)) {
894 error = xfs_itruncate_data(&tp, ip, iattr->ia_size);
896 goto out_trans_abort;
899 * Truncated "down", so we're removing references to old data
900 * here - if we delay flushing for a long time, we expose
901 * ourselves unduly to the notorious NULL files problem. So,
902 * we mark this inode and flush it when the file is closed,
903 * and do not wait the usual (long) time for writeout.
905 xfs_iflags_set(ip, XFS_ITRUNCATED);
909 * Change file access modes.
911 if (mask & ATTR_MODE)
912 xfs_setattr_mode(tp, ip, iattr);
914 if (mask & ATTR_CTIME) {
915 inode->i_ctime = iattr->ia_ctime;
916 ip->i_d.di_ctime.t_sec = iattr->ia_ctime.tv_sec;
917 ip->i_d.di_ctime.t_nsec = iattr->ia_ctime.tv_nsec;
918 ip->i_update_core = 1;
920 if (mask & ATTR_MTIME) {
921 inode->i_mtime = iattr->ia_mtime;
922 ip->i_d.di_mtime.t_sec = iattr->ia_mtime.tv_sec;
923 ip->i_d.di_mtime.t_nsec = iattr->ia_mtime.tv_nsec;
924 ip->i_update_core = 1;
927 xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
929 XFS_STATS_INC(xs_ig_attrchg);
931 if (mp->m_flags & XFS_MOUNT_WSYNC)
932 xfs_trans_set_sync(tp);
934 error = xfs_trans_commit(tp, XFS_TRANS_RELEASE_LOG_RES);
937 xfs_iunlock(ip, lock_flags);
941 commit_flags |= XFS_TRANS_ABORT;
943 xfs_trans_cancel(tp, commit_flags);
949 struct dentry *dentry,
952 if (iattr->ia_valid & ATTR_SIZE)
953 return -xfs_setattr_size(XFS_I(dentry->d_inode), iattr, 0);
954 return -xfs_setattr_nonsize(XFS_I(dentry->d_inode), iattr, 0);
957 #define XFS_FIEMAP_FLAGS (FIEMAP_FLAG_SYNC|FIEMAP_FLAG_XATTR)
960 * Call fiemap helper to fill in user data.
961 * Returns positive errors to xfs_getbmap.
966 struct getbmapx *bmv,
970 struct fiemap_extent_info *fieinfo = *arg;
971 u32 fiemap_flags = 0;
972 u64 logical, physical, length;
974 /* Do nothing for a hole */
975 if (bmv->bmv_block == -1LL)
978 logical = BBTOB(bmv->bmv_offset);
979 physical = BBTOB(bmv->bmv_block);
980 length = BBTOB(bmv->bmv_length);
982 if (bmv->bmv_oflags & BMV_OF_PREALLOC)
983 fiemap_flags |= FIEMAP_EXTENT_UNWRITTEN;
984 else if (bmv->bmv_oflags & BMV_OF_DELALLOC) {
985 fiemap_flags |= FIEMAP_EXTENT_DELALLOC;
986 physical = 0; /* no block yet */
988 if (bmv->bmv_oflags & BMV_OF_LAST)
989 fiemap_flags |= FIEMAP_EXTENT_LAST;
991 error = fiemap_fill_next_extent(fieinfo, logical, physical,
992 length, fiemap_flags);
995 *full = 1; /* user array now full */
1003 struct inode *inode,
1004 struct fiemap_extent_info *fieinfo,
1008 xfs_inode_t *ip = XFS_I(inode);
1012 error = fiemap_check_flags(fieinfo, XFS_FIEMAP_FLAGS);
1016 /* Set up bmap header for xfs internal routine */
1017 bm.bmv_offset = BTOBB(start);
1018 /* Special case for whole file */
1019 if (length == FIEMAP_MAX_OFFSET)
1020 bm.bmv_length = -1LL;
1022 bm.bmv_length = BTOBB(length);
1024 /* We add one because in getbmap world count includes the header */
1025 bm.bmv_count = !fieinfo->fi_extents_max ? MAXEXTNUM :
1026 fieinfo->fi_extents_max + 1;
1027 bm.bmv_count = min_t(__s32, bm.bmv_count,
1028 (PAGE_SIZE * 16 / sizeof(struct getbmapx)));
1029 bm.bmv_iflags = BMV_IF_PREALLOC | BMV_IF_NO_HOLES;
1030 if (fieinfo->fi_flags & FIEMAP_FLAG_XATTR)
1031 bm.bmv_iflags |= BMV_IF_ATTRFORK;
1032 if (!(fieinfo->fi_flags & FIEMAP_FLAG_SYNC))
1033 bm.bmv_iflags |= BMV_IF_DELALLOC;
1035 error = xfs_getbmap(ip, &bm, xfs_fiemap_format, fieinfo);
1042 static const struct inode_operations xfs_inode_operations = {
1043 .get_acl = xfs_get_acl,
1044 .getattr = xfs_vn_getattr,
1045 .setattr = xfs_vn_setattr,
1046 .setxattr = generic_setxattr,
1047 .getxattr = generic_getxattr,
1048 .removexattr = generic_removexattr,
1049 .listxattr = xfs_vn_listxattr,
1050 .fiemap = xfs_vn_fiemap,
1053 static const struct inode_operations xfs_dir_inode_operations = {
1054 .create = xfs_vn_create,
1055 .lookup = xfs_vn_lookup,
1056 .link = xfs_vn_link,
1057 .unlink = xfs_vn_unlink,
1058 .symlink = xfs_vn_symlink,
1059 .mkdir = xfs_vn_mkdir,
1061 * Yes, XFS uses the same method for rmdir and unlink.
1063 * There are some subtile differences deeper in the code,
1064 * but we use S_ISDIR to check for those.
1066 .rmdir = xfs_vn_unlink,
1067 .mknod = xfs_vn_mknod,
1068 .rename = xfs_vn_rename,
1069 .get_acl = xfs_get_acl,
1070 .getattr = xfs_vn_getattr,
1071 .setattr = xfs_vn_setattr,
1072 .setxattr = generic_setxattr,
1073 .getxattr = generic_getxattr,
1074 .removexattr = generic_removexattr,
1075 .listxattr = xfs_vn_listxattr,
1078 static const struct inode_operations xfs_dir_ci_inode_operations = {
1079 .create = xfs_vn_create,
1080 .lookup = xfs_vn_ci_lookup,
1081 .link = xfs_vn_link,
1082 .unlink = xfs_vn_unlink,
1083 .symlink = xfs_vn_symlink,
1084 .mkdir = xfs_vn_mkdir,
1086 * Yes, XFS uses the same method for rmdir and unlink.
1088 * There are some subtile differences deeper in the code,
1089 * but we use S_ISDIR to check for those.
1091 .rmdir = xfs_vn_unlink,
1092 .mknod = xfs_vn_mknod,
1093 .rename = xfs_vn_rename,
1094 .get_acl = xfs_get_acl,
1095 .getattr = xfs_vn_getattr,
1096 .setattr = xfs_vn_setattr,
1097 .setxattr = generic_setxattr,
1098 .getxattr = generic_getxattr,
1099 .removexattr = generic_removexattr,
1100 .listxattr = xfs_vn_listxattr,
1103 static const struct inode_operations xfs_symlink_inode_operations = {
1104 .readlink = generic_readlink,
1105 .follow_link = xfs_vn_follow_link,
1106 .put_link = xfs_vn_put_link,
1107 .get_acl = xfs_get_acl,
1108 .getattr = xfs_vn_getattr,
1109 .setattr = xfs_vn_setattr,
1110 .setxattr = generic_setxattr,
1111 .getxattr = generic_getxattr,
1112 .removexattr = generic_removexattr,
1113 .listxattr = xfs_vn_listxattr,
1117 xfs_diflags_to_iflags(
1118 struct inode *inode,
1119 struct xfs_inode *ip)
1121 if (ip->i_d.di_flags & XFS_DIFLAG_IMMUTABLE)
1122 inode->i_flags |= S_IMMUTABLE;
1124 inode->i_flags &= ~S_IMMUTABLE;
1125 if (ip->i_d.di_flags & XFS_DIFLAG_APPEND)
1126 inode->i_flags |= S_APPEND;
1128 inode->i_flags &= ~S_APPEND;
1129 if (ip->i_d.di_flags & XFS_DIFLAG_SYNC)
1130 inode->i_flags |= S_SYNC;
1132 inode->i_flags &= ~S_SYNC;
1133 if (ip->i_d.di_flags & XFS_DIFLAG_NOATIME)
1134 inode->i_flags |= S_NOATIME;
1136 inode->i_flags &= ~S_NOATIME;
1140 * Initialize the Linux inode, set up the operation vectors and
1143 * When reading existing inodes from disk this is called directly
1144 * from xfs_iget, when creating a new inode it is called from
1145 * xfs_ialloc after setting up the inode.
1147 * We are always called with an uninitialised linux inode here.
1148 * We need to initialise the necessary fields and take a reference
1153 struct xfs_inode *ip)
1155 struct inode *inode = &ip->i_vnode;
1157 inode->i_ino = ip->i_ino;
1158 inode->i_state = I_NEW;
1160 inode_sb_list_add(inode);
1161 /* make the inode look hashed for the writeback code */
1162 hlist_add_fake(&inode->i_hash);
1164 inode->i_mode = ip->i_d.di_mode;
1165 set_nlink(inode, ip->i_d.di_nlink);
1166 inode->i_uid = ip->i_d.di_uid;
1167 inode->i_gid = ip->i_d.di_gid;
1169 switch (inode->i_mode & S_IFMT) {
1173 MKDEV(sysv_major(ip->i_df.if_u2.if_rdev) & 0x1ff,
1174 sysv_minor(ip->i_df.if_u2.if_rdev));
1181 inode->i_generation = ip->i_d.di_gen;
1182 i_size_write(inode, ip->i_d.di_size);
1183 inode->i_atime.tv_sec = ip->i_d.di_atime.t_sec;
1184 inode->i_atime.tv_nsec = ip->i_d.di_atime.t_nsec;
1185 inode->i_mtime.tv_sec = ip->i_d.di_mtime.t_sec;
1186 inode->i_mtime.tv_nsec = ip->i_d.di_mtime.t_nsec;
1187 inode->i_ctime.tv_sec = ip->i_d.di_ctime.t_sec;
1188 inode->i_ctime.tv_nsec = ip->i_d.di_ctime.t_nsec;
1189 xfs_diflags_to_iflags(inode, ip);
1191 switch (inode->i_mode & S_IFMT) {
1193 inode->i_op = &xfs_inode_operations;
1194 inode->i_fop = &xfs_file_operations;
1195 inode->i_mapping->a_ops = &xfs_address_space_operations;
1198 if (xfs_sb_version_hasasciici(&XFS_M(inode->i_sb)->m_sb))
1199 inode->i_op = &xfs_dir_ci_inode_operations;
1201 inode->i_op = &xfs_dir_inode_operations;
1202 inode->i_fop = &xfs_dir_file_operations;
1205 inode->i_op = &xfs_symlink_inode_operations;
1206 if (!(ip->i_df.if_flags & XFS_IFINLINE))
1207 inode->i_mapping->a_ops = &xfs_address_space_operations;
1210 inode->i_op = &xfs_inode_operations;
1211 init_special_inode(inode, inode->i_mode, inode->i_rdev);
1216 * If there is no attribute fork no ACL can exist on this inode,
1217 * and it can't have any file capabilities attached to it either.
1219 if (!XFS_IFORK_Q(ip)) {
1220 inode_has_no_xattr(inode);
1221 cache_no_acl(inode);
1224 xfs_iflags_clear(ip, XFS_INEW);
1227 unlock_new_inode(inode);