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);