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
20 #include "xfs_format.h"
23 #include "xfs_trans.h"
26 #include "xfs_alloc.h"
27 #include "xfs_quota.h"
28 #include "xfs_mount.h"
29 #include "xfs_bmap_btree.h"
30 #include "xfs_dinode.h"
31 #include "xfs_inode.h"
33 #include "xfs_bmap_util.h"
34 #include "xfs_rtalloc.h"
35 #include "xfs_error.h"
36 #include "xfs_itable.h"
38 #include "xfs_buf_item.h"
39 #include "xfs_inode_item.h"
40 #include "xfs_trace.h"
41 #include "xfs_icache.h"
42 #include "xfs_symlink.h"
44 #include <linux/capability.h>
45 #include <linux/xattr.h>
46 #include <linux/namei.h>
47 #include <linux/posix_acl.h>
48 #include <linux/security.h>
49 #include <linux/fiemap.h>
50 #include <linux/slab.h>
55 const struct xattr *xattr_array,
58 const struct xattr *xattr;
59 struct xfs_inode *ip = XFS_I(inode);
62 for (xattr = xattr_array; xattr->name != NULL; xattr++) {
63 error = xfs_attr_set(ip, xattr->name, xattr->value,
64 xattr->value_len, ATTR_SECURE);
72 * Hook in SELinux. This is not quite correct yet, what we really need
73 * here (as we do for default ACLs) is a mechanism by which creation of
74 * these attrs can be journalled at inode creation time (along with the
75 * inode, of course, such that log replay can't cause these to be lost).
82 const struct qstr *qstr)
84 return security_inode_init_security(inode, dir, qstr,
85 &xfs_initxattrs, NULL);
90 struct xfs_name *namep,
91 struct dentry *dentry)
93 namep->name = dentry->d_name.name;
94 namep->len = dentry->d_name.len;
101 struct dentry *dentry)
103 struct xfs_name teardown;
106 * If we can't add the ACL or we fail in
107 * xfs_init_security we must back out.
108 * ENOSPC can hit here, among other things.
110 xfs_dentry_to_name(&teardown, dentry);
112 xfs_remove(XFS_I(dir), &teardown, XFS_I(inode));
119 struct dentry *dentry,
124 struct xfs_inode *ip = NULL;
125 struct posix_acl *default_acl = NULL;
126 struct xfs_name name;
130 * Irix uses Missed'em'V split, but doesn't want to see
131 * the upper 5 bits of (14bit) major.
133 if (S_ISCHR(mode) || S_ISBLK(mode)) {
134 if (unlikely(!sysv_valid_dev(rdev) || MAJOR(rdev) & ~0x1ff))
136 rdev = sysv_encode_dev(rdev);
141 if (IS_POSIXACL(dir)) {
142 default_acl = xfs_get_acl(dir, ACL_TYPE_DEFAULT);
143 if (IS_ERR(default_acl))
144 return PTR_ERR(default_acl);
147 mode &= ~current_umask();
150 xfs_dentry_to_name(&name, dentry);
151 error = xfs_create(XFS_I(dir), &name, mode, rdev, &ip);
157 error = xfs_init_security(inode, dir, &dentry->d_name);
159 goto out_cleanup_inode;
162 error = -xfs_inherit_acl(inode, default_acl);
165 goto out_cleanup_inode;
169 d_instantiate(dentry, inode);
173 xfs_cleanup_inode(dir, inode, dentry);
175 posix_acl_release(default_acl);
182 struct dentry *dentry,
186 return xfs_vn_mknod(dir, dentry, mode, 0);
192 struct dentry *dentry,
195 return xfs_vn_mknod(dir, dentry, mode|S_IFDIR, 0);
198 STATIC struct dentry *
201 struct dentry *dentry,
204 struct xfs_inode *cip;
205 struct xfs_name name;
208 if (dentry->d_name.len >= MAXNAMELEN)
209 return ERR_PTR(-ENAMETOOLONG);
211 xfs_dentry_to_name(&name, dentry);
212 error = xfs_lookup(XFS_I(dir), &name, &cip, NULL);
213 if (unlikely(error)) {
214 if (unlikely(error != ENOENT))
215 return ERR_PTR(-error);
220 return d_splice_alias(VFS_I(cip), dentry);
223 STATIC struct dentry *
226 struct dentry *dentry,
229 struct xfs_inode *ip;
230 struct xfs_name xname;
231 struct xfs_name ci_name;
235 if (dentry->d_name.len >= MAXNAMELEN)
236 return ERR_PTR(-ENAMETOOLONG);
238 xfs_dentry_to_name(&xname, dentry);
239 error = xfs_lookup(XFS_I(dir), &xname, &ip, &ci_name);
240 if (unlikely(error)) {
241 if (unlikely(error != ENOENT))
242 return ERR_PTR(-error);
244 * call d_add(dentry, NULL) here when d_drop_negative_children
245 * is called in xfs_vn_mknod (ie. allow negative dentries
246 * with CI filesystems).
251 /* if exact match, just splice and exit */
253 return d_splice_alias(VFS_I(ip), dentry);
255 /* else case-insensitive match... */
256 dname.name = ci_name.name;
257 dname.len = ci_name.len;
258 dentry = d_add_ci(dentry, VFS_I(ip), &dname);
259 kmem_free(ci_name.name);
265 struct dentry *old_dentry,
267 struct dentry *dentry)
269 struct inode *inode = old_dentry->d_inode;
270 struct xfs_name name;
273 xfs_dentry_to_name(&name, dentry);
275 error = xfs_link(XFS_I(dir), XFS_I(inode), &name);
280 d_instantiate(dentry, inode);
287 struct dentry *dentry)
289 struct xfs_name name;
292 xfs_dentry_to_name(&name, dentry);
294 error = -xfs_remove(XFS_I(dir), &name, XFS_I(dentry->d_inode));
299 * With unlink, the VFS makes the dentry "negative": no inode,
300 * but still hashed. This is incompatible with case-insensitive
301 * mode, so invalidate (unhash) the dentry in CI-mode.
303 if (xfs_sb_version_hasasciici(&XFS_M(dir->i_sb)->m_sb))
304 d_invalidate(dentry);
311 struct dentry *dentry,
315 struct xfs_inode *cip = NULL;
316 struct xfs_name name;
321 (irix_symlink_mode ? 0777 & ~current_umask() : S_IRWXUGO);
322 xfs_dentry_to_name(&name, dentry);
324 error = xfs_symlink(XFS_I(dir), &name, symname, mode, &cip);
330 error = xfs_init_security(inode, dir, &dentry->d_name);
332 goto out_cleanup_inode;
334 d_instantiate(dentry, inode);
338 xfs_cleanup_inode(dir, inode, dentry);
346 struct dentry *odentry,
348 struct dentry *ndentry)
350 struct inode *new_inode = ndentry->d_inode;
351 struct xfs_name oname;
352 struct xfs_name nname;
354 xfs_dentry_to_name(&oname, odentry);
355 xfs_dentry_to_name(&nname, ndentry);
357 return -xfs_rename(XFS_I(odir), &oname, XFS_I(odentry->d_inode),
358 XFS_I(ndir), &nname, new_inode ?
359 XFS_I(new_inode) : NULL);
363 * careful here - this function can get called recursively, so
364 * we need to be very careful about how much stack we use.
365 * uio is kmalloced for this reason...
369 struct dentry *dentry,
370 struct nameidata *nd)
375 link = kmalloc(MAXPATHLEN+1, GFP_KERNEL);
379 error = -xfs_readlink(XFS_I(dentry->d_inode), link);
383 nd_set_link(nd, link);
389 nd_set_link(nd, ERR_PTR(error));
395 struct dentry *dentry,
396 struct nameidata *nd,
399 char *s = nd_get_link(nd);
407 struct vfsmount *mnt,
408 struct dentry *dentry,
411 struct inode *inode = dentry->d_inode;
412 struct xfs_inode *ip = XFS_I(inode);
413 struct xfs_mount *mp = ip->i_mount;
415 trace_xfs_getattr(ip);
417 if (XFS_FORCED_SHUTDOWN(mp))
418 return -XFS_ERROR(EIO);
420 stat->size = XFS_ISIZE(ip);
421 stat->dev = inode->i_sb->s_dev;
422 stat->mode = ip->i_d.di_mode;
423 stat->nlink = ip->i_d.di_nlink;
424 stat->uid = ip->i_d.di_uid;
425 stat->gid = ip->i_d.di_gid;
426 stat->ino = ip->i_ino;
427 stat->atime = inode->i_atime;
428 stat->mtime = inode->i_mtime;
429 stat->ctime = inode->i_ctime;
431 XFS_FSB_TO_BB(mp, ip->i_d.di_nblocks + ip->i_delayed_blks);
434 switch (inode->i_mode & S_IFMT) {
437 stat->blksize = BLKDEV_IOSIZE;
438 stat->rdev = MKDEV(sysv_major(ip->i_df.if_u2.if_rdev) & 0x1ff,
439 sysv_minor(ip->i_df.if_u2.if_rdev));
442 if (XFS_IS_REALTIME_INODE(ip)) {
444 * If the file blocks are being allocated from a
445 * realtime volume, then return the inode's realtime
446 * extent size or the realtime volume's extent size.
449 xfs_get_extsz_hint(ip) << mp->m_sb.sb_blocklog;
451 stat->blksize = xfs_preferred_iosize(mp);
461 struct xfs_trans *tp,
462 struct xfs_inode *ip,
465 struct inode *inode = VFS_I(ip);
466 umode_t mode = iattr->ia_mode;
469 ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL));
471 ip->i_d.di_mode &= S_IFMT;
472 ip->i_d.di_mode |= mode & ~S_IFMT;
474 inode->i_mode &= S_IFMT;
475 inode->i_mode |= mode & ~S_IFMT;
480 struct xfs_inode *ip,
484 xfs_mount_t *mp = ip->i_mount;
485 struct inode *inode = VFS_I(ip);
486 int mask = iattr->ia_valid;
489 uid_t uid = 0, iuid = 0;
490 gid_t gid = 0, igid = 0;
491 struct xfs_dquot *udqp = NULL, *gdqp = NULL;
492 struct xfs_dquot *olddquot1 = NULL, *olddquot2 = NULL;
494 trace_xfs_setattr(ip);
496 /* If acls are being inherited, we already have this checked */
497 if (!(flags & XFS_ATTR_NOACL)) {
498 if (mp->m_flags & XFS_MOUNT_RDONLY)
499 return XFS_ERROR(EROFS);
501 if (XFS_FORCED_SHUTDOWN(mp))
502 return XFS_ERROR(EIO);
504 error = -inode_change_ok(inode, iattr);
506 return XFS_ERROR(error);
509 ASSERT((mask & ATTR_SIZE) == 0);
512 * If disk quotas is on, we make sure that the dquots do exist on disk,
513 * before we start any other transactions. Trying to do this later
514 * is messy. We don't care to take a readlock to look at the ids
515 * in inode here, because we can't hold it across the trans_reserve.
516 * If the IDs do change before we take the ilock, we're covered
517 * because the i_*dquot fields will get updated anyway.
519 if (XFS_IS_QUOTA_ON(mp) && (mask & (ATTR_UID|ATTR_GID))) {
522 if ((mask & ATTR_UID) && XFS_IS_UQUOTA_ON(mp)) {
524 qflags |= XFS_QMOPT_UQUOTA;
526 uid = ip->i_d.di_uid;
528 if ((mask & ATTR_GID) && XFS_IS_GQUOTA_ON(mp)) {
530 qflags |= XFS_QMOPT_GQUOTA;
532 gid = ip->i_d.di_gid;
536 * We take a reference when we initialize udqp and gdqp,
537 * so it is important that we never blindly double trip on
538 * the same variable. See xfs_create() for an example.
540 ASSERT(udqp == NULL);
541 ASSERT(gdqp == NULL);
542 error = xfs_qm_vop_dqalloc(ip, uid, gid, xfs_get_projid(ip),
543 qflags, &udqp, &gdqp, NULL);
548 tp = xfs_trans_alloc(mp, XFS_TRANS_SETATTR_NOT_SIZE);
549 error = xfs_trans_reserve(tp, 0, XFS_ICHANGE_LOG_RES(mp), 0, 0, 0);
553 xfs_ilock(ip, XFS_ILOCK_EXCL);
556 * Change file ownership. Must be the owner or privileged.
558 if (mask & (ATTR_UID|ATTR_GID)) {
560 * These IDs could have changed since we last looked at them.
561 * But, we're assured that if the ownership did change
562 * while we didn't have the inode locked, inode's dquot(s)
563 * would have changed also.
565 iuid = ip->i_d.di_uid;
566 igid = ip->i_d.di_gid;
567 gid = (mask & ATTR_GID) ? iattr->ia_gid : igid;
568 uid = (mask & ATTR_UID) ? iattr->ia_uid : iuid;
571 * Do a quota reservation only if uid/gid is actually
574 if (XFS_IS_QUOTA_RUNNING(mp) &&
575 ((XFS_IS_UQUOTA_ON(mp) && iuid != uid) ||
576 (XFS_IS_GQUOTA_ON(mp) && igid != gid))) {
578 error = xfs_qm_vop_chown_reserve(tp, ip, udqp, gdqp,
579 NULL, capable(CAP_FOWNER) ?
580 XFS_QMOPT_FORCE_RES : 0);
581 if (error) /* out of quota */
582 goto out_trans_cancel;
586 xfs_trans_ijoin(tp, ip, 0);
589 * Change file ownership. Must be the owner or privileged.
591 if (mask & (ATTR_UID|ATTR_GID)) {
593 * CAP_FSETID overrides the following restrictions:
595 * The set-user-ID and set-group-ID bits of a file will be
596 * cleared upon successful return from chown()
598 if ((ip->i_d.di_mode & (S_ISUID|S_ISGID)) &&
599 !capable(CAP_FSETID))
600 ip->i_d.di_mode &= ~(S_ISUID|S_ISGID);
603 * Change the ownerships and register quota modifications
604 * in the transaction.
607 if (XFS_IS_QUOTA_RUNNING(mp) && XFS_IS_UQUOTA_ON(mp)) {
608 ASSERT(mask & ATTR_UID);
610 olddquot1 = xfs_qm_vop_chown(tp, ip,
611 &ip->i_udquot, udqp);
613 ip->i_d.di_uid = uid;
617 if (XFS_IS_QUOTA_RUNNING(mp) && XFS_IS_GQUOTA_ON(mp)) {
618 ASSERT(!XFS_IS_PQUOTA_ON(mp));
619 ASSERT(mask & ATTR_GID);
621 olddquot2 = xfs_qm_vop_chown(tp, ip,
622 &ip->i_gdquot, gdqp);
624 ip->i_d.di_gid = gid;
630 * Change file access modes.
632 if (mask & ATTR_MODE)
633 xfs_setattr_mode(tp, ip, iattr);
636 * Change file access or modified times.
638 if (mask & ATTR_ATIME) {
639 inode->i_atime = iattr->ia_atime;
640 ip->i_d.di_atime.t_sec = iattr->ia_atime.tv_sec;
641 ip->i_d.di_atime.t_nsec = iattr->ia_atime.tv_nsec;
643 if (mask & ATTR_CTIME) {
644 inode->i_ctime = iattr->ia_ctime;
645 ip->i_d.di_ctime.t_sec = iattr->ia_ctime.tv_sec;
646 ip->i_d.di_ctime.t_nsec = iattr->ia_ctime.tv_nsec;
648 if (mask & ATTR_MTIME) {
649 inode->i_mtime = iattr->ia_mtime;
650 ip->i_d.di_mtime.t_sec = iattr->ia_mtime.tv_sec;
651 ip->i_d.di_mtime.t_nsec = iattr->ia_mtime.tv_nsec;
654 xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
656 XFS_STATS_INC(xs_ig_attrchg);
658 if (mp->m_flags & XFS_MOUNT_WSYNC)
659 xfs_trans_set_sync(tp);
660 error = xfs_trans_commit(tp, 0);
662 xfs_iunlock(ip, XFS_ILOCK_EXCL);
665 * Release any dquot(s) the inode had kept before chown.
667 xfs_qm_dqrele(olddquot1);
668 xfs_qm_dqrele(olddquot2);
673 return XFS_ERROR(error);
676 * XXX(hch): Updating the ACL entries is not atomic vs the i_mode
677 * update. We could avoid this with linked transactions
678 * and passing down the transaction pointer all the way
679 * to attr_set. No previous user of the generic
680 * Posix ACL code seems to care about this issue either.
682 if ((mask & ATTR_MODE) && !(flags & XFS_ATTR_NOACL)) {
683 error = -xfs_acl_chmod(inode);
685 return XFS_ERROR(error);
691 xfs_trans_cancel(tp, 0);
692 xfs_iunlock(ip, XFS_ILOCK_EXCL);
700 * Truncate file. Must have write permission and not be a directory.
704 struct xfs_inode *ip,
708 struct xfs_mount *mp = ip->i_mount;
709 struct inode *inode = VFS_I(ip);
710 int mask = iattr->ia_valid;
711 xfs_off_t oldsize, newsize;
712 struct xfs_trans *tp;
715 uint commit_flags = 0;
717 trace_xfs_setattr(ip);
719 if (mp->m_flags & XFS_MOUNT_RDONLY)
720 return XFS_ERROR(EROFS);
722 if (XFS_FORCED_SHUTDOWN(mp))
723 return XFS_ERROR(EIO);
725 error = -inode_change_ok(inode, iattr);
727 return XFS_ERROR(error);
729 ASSERT(S_ISREG(ip->i_d.di_mode));
730 ASSERT((mask & (ATTR_UID|ATTR_GID|ATTR_ATIME|ATTR_ATIME_SET|
731 ATTR_MTIME_SET|ATTR_KILL_PRIV|ATTR_TIMES_SET)) == 0);
733 if (!(flags & XFS_ATTR_NOLOCK)) {
734 lock_flags |= XFS_IOLOCK_EXCL;
735 xfs_ilock(ip, lock_flags);
738 oldsize = inode->i_size;
739 newsize = iattr->ia_size;
742 * Short circuit the truncate case for zero length files.
744 if (newsize == 0 && oldsize == 0 && ip->i_d.di_nextents == 0) {
745 if (!(mask & (ATTR_CTIME|ATTR_MTIME)))
749 * Use the regular setattr path to update the timestamps.
751 xfs_iunlock(ip, lock_flags);
752 iattr->ia_valid &= ~ATTR_SIZE;
753 return xfs_setattr_nonsize(ip, iattr, 0);
757 * Make sure that the dquots are attached to the inode.
759 error = xfs_qm_dqattach(ip, 0);
764 * Now we can make the changes. Before we join the inode to the
765 * transaction, take care of the part of the truncation that must be
766 * done without the inode lock. This needs to be done before joining
767 * the inode to the transaction, because the inode cannot be unlocked
768 * once it is a part of the transaction.
770 if (newsize > oldsize) {
772 * Do the first part of growing a file: zero any data in the
773 * last block that is beyond the old EOF. We need to do this
774 * before the inode is joined to the transaction to modify
777 error = xfs_zero_eof(ip, newsize, oldsize);
783 * We are going to log the inode size change in this transaction so
784 * any previous writes that are beyond the on disk EOF and the new
785 * EOF that have not been written out need to be written here. If we
786 * do not write the data out, we expose ourselves to the null files
789 * Only flush from the on disk size to the smaller of the in memory
790 * file size or the new size as that's the range we really care about
791 * here and prevents waiting for other data not within the range we
794 if (oldsize != ip->i_d.di_size && newsize > ip->i_d.di_size) {
795 error = -filemap_write_and_wait_range(VFS_I(ip)->i_mapping,
796 ip->i_d.di_size, newsize);
802 * Wait for all direct I/O to complete.
804 inode_dio_wait(inode);
806 error = -block_truncate_page(inode->i_mapping, newsize, xfs_get_blocks);
810 tp = xfs_trans_alloc(mp, XFS_TRANS_SETATTR_SIZE);
811 error = xfs_trans_reserve(tp, 0, XFS_ITRUNCATE_LOG_RES(mp), 0,
812 XFS_TRANS_PERM_LOG_RES,
813 XFS_ITRUNCATE_LOG_COUNT);
815 goto out_trans_cancel;
817 truncate_setsize(inode, newsize);
819 commit_flags = XFS_TRANS_RELEASE_LOG_RES;
820 lock_flags |= XFS_ILOCK_EXCL;
822 xfs_ilock(ip, XFS_ILOCK_EXCL);
824 xfs_trans_ijoin(tp, ip, 0);
827 * Only change the c/mtime if we are changing the size or we are
828 * explicitly asked to change it. This handles the semantic difference
829 * between truncate() and ftruncate() as implemented in the VFS.
831 * The regular truncate() case without ATTR_CTIME and ATTR_MTIME is a
832 * special case where we need to update the times despite not having
833 * these flags set. For all other operations the VFS set these flags
834 * explicitly if it wants a timestamp update.
836 if (newsize != oldsize && (!(mask & (ATTR_CTIME | ATTR_MTIME)))) {
837 iattr->ia_ctime = iattr->ia_mtime =
838 current_fs_time(inode->i_sb);
839 mask |= ATTR_CTIME | ATTR_MTIME;
843 * The first thing we do is set the size to new_size permanently on
844 * disk. This way we don't have to worry about anyone ever being able
845 * to look at the data being freed even in the face of a crash.
846 * What we're getting around here is the case where we free a block, it
847 * is allocated to another file, it is written to, and then we crash.
848 * If the new data gets written to the file but the log buffers
849 * containing the free and reallocation don't, then we'd end up with
850 * garbage in the blocks being freed. As long as we make the new size
851 * permanent before actually freeing any blocks it doesn't matter if
852 * they get written to.
854 ip->i_d.di_size = newsize;
855 xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
857 if (newsize <= oldsize) {
858 error = xfs_itruncate_extents(&tp, ip, XFS_DATA_FORK, newsize);
860 goto out_trans_abort;
863 * Truncated "down", so we're removing references to old data
864 * here - if we delay flushing for a long time, we expose
865 * ourselves unduly to the notorious NULL files problem. So,
866 * we mark this inode and flush it when the file is closed,
867 * and do not wait the usual (long) time for writeout.
869 xfs_iflags_set(ip, XFS_ITRUNCATED);
871 /* A truncate down always removes post-EOF blocks. */
872 xfs_inode_clear_eofblocks_tag(ip);
876 * Change file access modes.
878 if (mask & ATTR_MODE)
879 xfs_setattr_mode(tp, ip, iattr);
881 if (mask & ATTR_CTIME) {
882 inode->i_ctime = iattr->ia_ctime;
883 ip->i_d.di_ctime.t_sec = iattr->ia_ctime.tv_sec;
884 ip->i_d.di_ctime.t_nsec = iattr->ia_ctime.tv_nsec;
886 if (mask & ATTR_MTIME) {
887 inode->i_mtime = iattr->ia_mtime;
888 ip->i_d.di_mtime.t_sec = iattr->ia_mtime.tv_sec;
889 ip->i_d.di_mtime.t_nsec = iattr->ia_mtime.tv_nsec;
892 xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
894 XFS_STATS_INC(xs_ig_attrchg);
896 if (mp->m_flags & XFS_MOUNT_WSYNC)
897 xfs_trans_set_sync(tp);
899 error = xfs_trans_commit(tp, XFS_TRANS_RELEASE_LOG_RES);
902 xfs_iunlock(ip, lock_flags);
906 commit_flags |= XFS_TRANS_ABORT;
908 xfs_trans_cancel(tp, commit_flags);
914 struct dentry *dentry,
917 if (iattr->ia_valid & ATTR_SIZE)
918 return -xfs_setattr_size(XFS_I(dentry->d_inode), iattr, 0);
919 return -xfs_setattr_nonsize(XFS_I(dentry->d_inode), iattr, 0);
925 struct timespec *now,
928 struct xfs_inode *ip = XFS_I(inode);
929 struct xfs_mount *mp = ip->i_mount;
930 struct xfs_trans *tp;
933 trace_xfs_update_time(ip);
935 tp = xfs_trans_alloc(mp, XFS_TRANS_FSYNC_TS);
936 error = xfs_trans_reserve(tp, 0, XFS_FSYNC_TS_LOG_RES(mp), 0, 0, 0);
938 xfs_trans_cancel(tp, 0);
942 xfs_ilock(ip, XFS_ILOCK_EXCL);
943 if (flags & S_CTIME) {
944 inode->i_ctime = *now;
945 ip->i_d.di_ctime.t_sec = (__int32_t)now->tv_sec;
946 ip->i_d.di_ctime.t_nsec = (__int32_t)now->tv_nsec;
948 if (flags & S_MTIME) {
949 inode->i_mtime = *now;
950 ip->i_d.di_mtime.t_sec = (__int32_t)now->tv_sec;
951 ip->i_d.di_mtime.t_nsec = (__int32_t)now->tv_nsec;
953 if (flags & S_ATIME) {
954 inode->i_atime = *now;
955 ip->i_d.di_atime.t_sec = (__int32_t)now->tv_sec;
956 ip->i_d.di_atime.t_nsec = (__int32_t)now->tv_nsec;
958 xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL);
959 xfs_trans_log_inode(tp, ip, XFS_ILOG_TIMESTAMP);
960 return -xfs_trans_commit(tp, 0);
963 #define XFS_FIEMAP_FLAGS (FIEMAP_FLAG_SYNC|FIEMAP_FLAG_XATTR)
966 * Call fiemap helper to fill in user data.
967 * Returns positive errors to xfs_getbmap.
972 struct getbmapx *bmv,
976 struct fiemap_extent_info *fieinfo = *arg;
977 u32 fiemap_flags = 0;
978 u64 logical, physical, length;
980 /* Do nothing for a hole */
981 if (bmv->bmv_block == -1LL)
984 logical = BBTOB(bmv->bmv_offset);
985 physical = BBTOB(bmv->bmv_block);
986 length = BBTOB(bmv->bmv_length);
988 if (bmv->bmv_oflags & BMV_OF_PREALLOC)
989 fiemap_flags |= FIEMAP_EXTENT_UNWRITTEN;
990 else if (bmv->bmv_oflags & BMV_OF_DELALLOC) {
991 fiemap_flags |= (FIEMAP_EXTENT_DELALLOC |
992 FIEMAP_EXTENT_UNKNOWN);
993 physical = 0; /* no block yet */
995 if (bmv->bmv_oflags & BMV_OF_LAST)
996 fiemap_flags |= FIEMAP_EXTENT_LAST;
998 error = fiemap_fill_next_extent(fieinfo, logical, physical,
999 length, fiemap_flags);
1002 *full = 1; /* user array now full */
1010 struct inode *inode,
1011 struct fiemap_extent_info *fieinfo,
1015 xfs_inode_t *ip = XFS_I(inode);
1019 error = fiemap_check_flags(fieinfo, XFS_FIEMAP_FLAGS);
1023 /* Set up bmap header for xfs internal routine */
1024 bm.bmv_offset = BTOBB(start);
1025 /* Special case for whole file */
1026 if (length == FIEMAP_MAX_OFFSET)
1027 bm.bmv_length = -1LL;
1029 bm.bmv_length = BTOBB(length);
1031 /* We add one because in getbmap world count includes the header */
1032 bm.bmv_count = !fieinfo->fi_extents_max ? MAXEXTNUM :
1033 fieinfo->fi_extents_max + 1;
1034 bm.bmv_count = min_t(__s32, bm.bmv_count,
1035 (PAGE_SIZE * 16 / sizeof(struct getbmapx)));
1036 bm.bmv_iflags = BMV_IF_PREALLOC | BMV_IF_NO_HOLES;
1037 if (fieinfo->fi_flags & FIEMAP_FLAG_XATTR)
1038 bm.bmv_iflags |= BMV_IF_ATTRFORK;
1039 if (!(fieinfo->fi_flags & FIEMAP_FLAG_SYNC))
1040 bm.bmv_iflags |= BMV_IF_DELALLOC;
1042 error = xfs_getbmap(ip, &bm, xfs_fiemap_format, fieinfo);
1049 static const struct inode_operations xfs_inode_operations = {
1050 .get_acl = xfs_get_acl,
1051 .getattr = xfs_vn_getattr,
1052 .setattr = xfs_vn_setattr,
1053 .setxattr = generic_setxattr,
1054 .getxattr = generic_getxattr,
1055 .removexattr = generic_removexattr,
1056 .listxattr = xfs_vn_listxattr,
1057 .fiemap = xfs_vn_fiemap,
1058 .update_time = xfs_vn_update_time,
1061 static const struct inode_operations xfs_dir_inode_operations = {
1062 .create = xfs_vn_create,
1063 .lookup = xfs_vn_lookup,
1064 .link = xfs_vn_link,
1065 .unlink = xfs_vn_unlink,
1066 .symlink = xfs_vn_symlink,
1067 .mkdir = xfs_vn_mkdir,
1069 * Yes, XFS uses the same method for rmdir and unlink.
1071 * There are some subtile differences deeper in the code,
1072 * but we use S_ISDIR to check for those.
1074 .rmdir = xfs_vn_unlink,
1075 .mknod = xfs_vn_mknod,
1076 .rename = xfs_vn_rename,
1077 .get_acl = xfs_get_acl,
1078 .getattr = xfs_vn_getattr,
1079 .setattr = xfs_vn_setattr,
1080 .setxattr = generic_setxattr,
1081 .getxattr = generic_getxattr,
1082 .removexattr = generic_removexattr,
1083 .listxattr = xfs_vn_listxattr,
1084 .update_time = xfs_vn_update_time,
1087 static const struct inode_operations xfs_dir_ci_inode_operations = {
1088 .create = xfs_vn_create,
1089 .lookup = xfs_vn_ci_lookup,
1090 .link = xfs_vn_link,
1091 .unlink = xfs_vn_unlink,
1092 .symlink = xfs_vn_symlink,
1093 .mkdir = xfs_vn_mkdir,
1095 * Yes, XFS uses the same method for rmdir and unlink.
1097 * There are some subtile differences deeper in the code,
1098 * but we use S_ISDIR to check for those.
1100 .rmdir = xfs_vn_unlink,
1101 .mknod = xfs_vn_mknod,
1102 .rename = xfs_vn_rename,
1103 .get_acl = xfs_get_acl,
1104 .getattr = xfs_vn_getattr,
1105 .setattr = xfs_vn_setattr,
1106 .setxattr = generic_setxattr,
1107 .getxattr = generic_getxattr,
1108 .removexattr = generic_removexattr,
1109 .listxattr = xfs_vn_listxattr,
1110 .update_time = xfs_vn_update_time,
1113 static const struct inode_operations xfs_symlink_inode_operations = {
1114 .readlink = generic_readlink,
1115 .follow_link = xfs_vn_follow_link,
1116 .put_link = xfs_vn_put_link,
1117 .get_acl = xfs_get_acl,
1118 .getattr = xfs_vn_getattr,
1119 .setattr = xfs_vn_setattr,
1120 .setxattr = generic_setxattr,
1121 .getxattr = generic_getxattr,
1122 .removexattr = generic_removexattr,
1123 .listxattr = xfs_vn_listxattr,
1124 .update_time = xfs_vn_update_time,
1128 xfs_diflags_to_iflags(
1129 struct inode *inode,
1130 struct xfs_inode *ip)
1132 if (ip->i_d.di_flags & XFS_DIFLAG_IMMUTABLE)
1133 inode->i_flags |= S_IMMUTABLE;
1135 inode->i_flags &= ~S_IMMUTABLE;
1136 if (ip->i_d.di_flags & XFS_DIFLAG_APPEND)
1137 inode->i_flags |= S_APPEND;
1139 inode->i_flags &= ~S_APPEND;
1140 if (ip->i_d.di_flags & XFS_DIFLAG_SYNC)
1141 inode->i_flags |= S_SYNC;
1143 inode->i_flags &= ~S_SYNC;
1144 if (ip->i_d.di_flags & XFS_DIFLAG_NOATIME)
1145 inode->i_flags |= S_NOATIME;
1147 inode->i_flags &= ~S_NOATIME;
1151 * Initialize the Linux inode, set up the operation vectors and
1154 * When reading existing inodes from disk this is called directly
1155 * from xfs_iget, when creating a new inode it is called from
1156 * xfs_ialloc after setting up the inode.
1158 * We are always called with an uninitialised linux inode here.
1159 * We need to initialise the necessary fields and take a reference
1164 struct xfs_inode *ip)
1166 struct inode *inode = &ip->i_vnode;
1168 inode->i_ino = ip->i_ino;
1169 inode->i_state = I_NEW;
1171 inode_sb_list_add(inode);
1172 /* make the inode look hashed for the writeback code */
1173 hlist_add_fake(&inode->i_hash);
1175 inode->i_mode = ip->i_d.di_mode;
1176 set_nlink(inode, ip->i_d.di_nlink);
1177 inode->i_uid = ip->i_d.di_uid;
1178 inode->i_gid = ip->i_d.di_gid;
1180 switch (inode->i_mode & S_IFMT) {
1184 MKDEV(sysv_major(ip->i_df.if_u2.if_rdev) & 0x1ff,
1185 sysv_minor(ip->i_df.if_u2.if_rdev));
1192 inode->i_generation = ip->i_d.di_gen;
1193 i_size_write(inode, ip->i_d.di_size);
1194 inode->i_atime.tv_sec = ip->i_d.di_atime.t_sec;
1195 inode->i_atime.tv_nsec = ip->i_d.di_atime.t_nsec;
1196 inode->i_mtime.tv_sec = ip->i_d.di_mtime.t_sec;
1197 inode->i_mtime.tv_nsec = ip->i_d.di_mtime.t_nsec;
1198 inode->i_ctime.tv_sec = ip->i_d.di_ctime.t_sec;
1199 inode->i_ctime.tv_nsec = ip->i_d.di_ctime.t_nsec;
1200 xfs_diflags_to_iflags(inode, ip);
1202 switch (inode->i_mode & S_IFMT) {
1204 inode->i_op = &xfs_inode_operations;
1205 inode->i_fop = &xfs_file_operations;
1206 inode->i_mapping->a_ops = &xfs_address_space_operations;
1209 if (xfs_sb_version_hasasciici(&XFS_M(inode->i_sb)->m_sb))
1210 inode->i_op = &xfs_dir_ci_inode_operations;
1212 inode->i_op = &xfs_dir_inode_operations;
1213 inode->i_fop = &xfs_dir_file_operations;
1216 inode->i_op = &xfs_symlink_inode_operations;
1217 if (!(ip->i_df.if_flags & XFS_IFINLINE))
1218 inode->i_mapping->a_ops = &xfs_address_space_operations;
1221 inode->i_op = &xfs_inode_operations;
1222 init_special_inode(inode, inode->i_mode, inode->i_rdev);
1227 * If there is no attribute fork no ACL can exist on this inode,
1228 * and it can't have any file capabilities attached to it either.
1230 if (!XFS_IFORK_Q(ip)) {
1231 inode_has_no_xattr(inode);
1232 cache_no_acl(inode);
1235 xfs_iflags_clear(ip, XFS_INEW);
1238 unlock_new_inode(inode);