2 * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
3 * Copyright (C) 2004-2008 Red Hat, Inc. All rights reserved.
5 * This copyrighted material is made available to anyone wishing to use,
6 * modify, copy, or redistribute it subject to the terms and conditions
7 * of the GNU General Public License version 2.
10 #include <linux/sched.h>
11 #include <linux/slab.h>
12 #include <linux/spinlock.h>
13 #include <linux/completion.h>
14 #include <linux/buffer_head.h>
15 #include <linux/posix_acl.h>
16 #include <linux/sort.h>
17 #include <linux/gfs2_ondisk.h>
18 #include <linux/crc32.h>
19 #include <linux/security.h>
20 #include <linux/time.h>
38 struct gfs2_inum_range_host {
43 static int iget_test(struct inode *inode, void *opaque)
45 struct gfs2_inode *ip = GFS2_I(inode);
46 u64 *no_addr = opaque;
48 if (ip->i_no_addr == *no_addr)
54 static int iget_set(struct inode *inode, void *opaque)
56 struct gfs2_inode *ip = GFS2_I(inode);
57 u64 *no_addr = opaque;
59 inode->i_ino = (unsigned long)*no_addr;
60 ip->i_no_addr = *no_addr;
64 struct inode *gfs2_ilookup(struct super_block *sb, u64 no_addr)
66 unsigned long hash = (unsigned long)no_addr;
67 return ilookup5(sb, hash, iget_test, &no_addr);
70 static struct inode *gfs2_iget(struct super_block *sb, u64 no_addr)
72 unsigned long hash = (unsigned long)no_addr;
73 return iget5_locked(sb, hash, iget_test, iget_set, &no_addr);
76 struct gfs2_skip_data {
81 static int iget_skip_test(struct inode *inode, void *opaque)
83 struct gfs2_inode *ip = GFS2_I(inode);
84 struct gfs2_skip_data *data = opaque;
86 if (ip->i_no_addr == data->no_addr) {
87 if (inode->i_state & (I_FREEING|I_CLEAR|I_WILL_FREE)){
96 static int iget_skip_set(struct inode *inode, void *opaque)
98 struct gfs2_inode *ip = GFS2_I(inode);
99 struct gfs2_skip_data *data = opaque;
103 inode->i_ino = (unsigned long)(data->no_addr);
104 ip->i_no_addr = data->no_addr;
108 static struct inode *gfs2_iget_skip(struct super_block *sb,
111 struct gfs2_skip_data data;
112 unsigned long hash = (unsigned long)no_addr;
114 data.no_addr = no_addr;
116 return iget5_locked(sb, hash, iget_skip_test, iget_skip_set, &data);
120 * GFS2 lookup code fills in vfs inode contents based on info obtained
121 * from directory entry inside gfs2_inode_lookup(). This has caused issues
122 * with NFS code path since its get_dentry routine doesn't have the relevant
123 * directory entry when gfs2_inode_lookup() is invoked. Part of the code
124 * segment inside gfs2_inode_lookup code needs to get moved around.
126 * Clears I_NEW as well.
129 void gfs2_set_iop(struct inode *inode)
131 struct gfs2_sbd *sdp = GFS2_SB(inode);
132 umode_t mode = inode->i_mode;
135 inode->i_op = &gfs2_file_iops;
136 if (gfs2_localflocks(sdp))
137 inode->i_fop = &gfs2_file_fops_nolock;
139 inode->i_fop = &gfs2_file_fops;
140 } else if (S_ISDIR(mode)) {
141 inode->i_op = &gfs2_dir_iops;
142 if (gfs2_localflocks(sdp))
143 inode->i_fop = &gfs2_dir_fops_nolock;
145 inode->i_fop = &gfs2_dir_fops;
146 } else if (S_ISLNK(mode)) {
147 inode->i_op = &gfs2_symlink_iops;
149 inode->i_op = &gfs2_file_iops;
150 init_special_inode(inode, inode->i_mode, inode->i_rdev);
153 unlock_new_inode(inode);
157 * gfs2_inode_lookup - Lookup an inode
158 * @sb: The super block
159 * @no_addr: The inode number
160 * @type: The type of the inode
162 * Returns: A VFS inode, or an error
165 struct inode *gfs2_inode_lookup(struct super_block *sb,
171 struct gfs2_inode *ip;
172 struct gfs2_glock *io_gl;
175 inode = gfs2_iget(sb, no_addr);
179 return ERR_PTR(-ENOBUFS);
181 if (inode->i_state & I_NEW) {
182 struct gfs2_sbd *sdp = GFS2_SB(inode);
183 ip->i_no_formal_ino = no_formal_ino;
185 error = gfs2_glock_get(sdp, no_addr, &gfs2_inode_glops, CREATE, &ip->i_gl);
188 ip->i_gl->gl_object = ip;
190 error = gfs2_glock_get(sdp, no_addr, &gfs2_iopen_glops, CREATE, &io_gl);
194 set_bit(GIF_INVALID, &ip->i_flags);
195 error = gfs2_glock_nq_init(io_gl, LM_ST_SHARED, GL_EXACT, &ip->i_iopen_gh);
198 ip->i_iopen_gh.gh_gl->gl_object = ip;
200 gfs2_glock_put(io_gl);
202 if ((type == DT_UNKNOWN) && (no_formal_ino == 0))
205 inode->i_mode = DT2IF(type);
208 * We must read the inode in order to work out its type in
209 * this case. Note that this doesn't happen often as we normally
210 * know the type beforehand. This code path only occurs during
211 * unlinked inode recovery (where it is safe to do this glock,
212 * which is not true in the general case).
214 if (type == DT_UNKNOWN) {
215 struct gfs2_holder gh;
216 error = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, &gh);
219 /* Inode is now uptodate */
220 gfs2_glock_dq_uninit(&gh);
229 gfs2_glock_dq(&ip->i_iopen_gh);
231 gfs2_glock_put(io_gl);
233 if (inode->i_state & I_NEW)
234 ip->i_gl->gl_object = NULL;
235 gfs2_glock_put(ip->i_gl);
237 if (inode->i_state & I_NEW)
241 return ERR_PTR(error);
245 * gfs2_unlinked_inode_lookup - Lookup an unlinked inode for reclamation
246 * @sb: The super block
247 * no_addr: The inode number
248 * @@inode: A pointer to the inode found, if any
250 * Returns: 0 and *inode if no errors occurred. If an error occurs,
251 * the resulting *inode may or may not be NULL.
254 int gfs2_unlinked_inode_lookup(struct super_block *sb, u64 no_addr,
255 struct inode **inode)
257 struct gfs2_sbd *sdp;
258 struct gfs2_inode *ip;
259 struct gfs2_glock *io_gl;
261 struct gfs2_holder gh;
263 *inode = gfs2_iget_skip(sb, no_addr);
268 if (!((*inode)->i_state & I_NEW))
272 sdp = GFS2_SB(*inode);
273 ip->i_no_formal_ino = -1;
275 error = gfs2_glock_get(sdp, no_addr, &gfs2_inode_glops, CREATE, &ip->i_gl);
278 ip->i_gl->gl_object = ip;
280 error = gfs2_glock_get(sdp, no_addr, &gfs2_iopen_glops, CREATE, &io_gl);
284 set_bit(GIF_INVALID, &ip->i_flags);
285 error = gfs2_glock_nq_init(io_gl, LM_ST_SHARED, LM_FLAG_TRY | GL_EXACT,
287 if (unlikely(error)) {
288 if (error == GLR_TRYFAILED)
292 ip->i_iopen_gh.gh_gl->gl_object = ip;
293 gfs2_glock_put(io_gl);
295 (*inode)->i_mode = DT2IF(DT_UNKNOWN);
298 * We must read the inode in order to work out its type in
299 * this case. Note that this doesn't happen often as we normally
300 * know the type beforehand. This code path only occurs during
301 * unlinked inode recovery (where it is safe to do this glock,
302 * which is not true in the general case).
304 error = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, LM_FLAG_TRY,
306 if (unlikely(error)) {
307 if (error == GLR_TRYFAILED)
311 /* Inode is now uptodate */
312 gfs2_glock_dq_uninit(&gh);
313 gfs2_set_iop(*inode);
317 gfs2_glock_dq(&ip->i_iopen_gh);
319 gfs2_glock_put(io_gl);
321 ip->i_gl->gl_object = NULL;
322 gfs2_glock_put(ip->i_gl);
327 static int gfs2_dinode_in(struct gfs2_inode *ip, const void *buf)
329 const struct gfs2_dinode *str = buf;
330 struct timespec atime;
333 if (unlikely(ip->i_no_addr != be64_to_cpu(str->di_num.no_addr)))
335 ip->i_no_formal_ino = be64_to_cpu(str->di_num.no_formal_ino);
336 ip->i_inode.i_mode = be32_to_cpu(str->di_mode);
337 ip->i_inode.i_rdev = 0;
338 switch (ip->i_inode.i_mode & S_IFMT) {
341 ip->i_inode.i_rdev = MKDEV(be32_to_cpu(str->di_major),
342 be32_to_cpu(str->di_minor));
346 ip->i_inode.i_uid = be32_to_cpu(str->di_uid);
347 ip->i_inode.i_gid = be32_to_cpu(str->di_gid);
349 * We will need to review setting the nlink count here in the
350 * light of the forthcoming ro bind mount work. This is a reminder
353 ip->i_inode.i_nlink = be32_to_cpu(str->di_nlink);
354 ip->i_disksize = be64_to_cpu(str->di_size);
355 i_size_write(&ip->i_inode, ip->i_disksize);
356 gfs2_set_inode_blocks(&ip->i_inode, be64_to_cpu(str->di_blocks));
357 atime.tv_sec = be64_to_cpu(str->di_atime);
358 atime.tv_nsec = be32_to_cpu(str->di_atime_nsec);
359 if (timespec_compare(&ip->i_inode.i_atime, &atime) < 0)
360 ip->i_inode.i_atime = atime;
361 ip->i_inode.i_mtime.tv_sec = be64_to_cpu(str->di_mtime);
362 ip->i_inode.i_mtime.tv_nsec = be32_to_cpu(str->di_mtime_nsec);
363 ip->i_inode.i_ctime.tv_sec = be64_to_cpu(str->di_ctime);
364 ip->i_inode.i_ctime.tv_nsec = be32_to_cpu(str->di_ctime_nsec);
366 ip->i_goal = be64_to_cpu(str->di_goal_meta);
367 ip->i_generation = be64_to_cpu(str->di_generation);
369 ip->i_diskflags = be32_to_cpu(str->di_flags);
370 gfs2_set_inode_flags(&ip->i_inode);
371 height = be16_to_cpu(str->di_height);
372 if (unlikely(height > GFS2_MAX_META_HEIGHT))
374 ip->i_height = (u8)height;
376 depth = be16_to_cpu(str->di_depth);
377 if (unlikely(depth > GFS2_DIR_MAX_DEPTH))
379 ip->i_depth = (u8)depth;
380 ip->i_entries = be32_to_cpu(str->di_entries);
382 ip->i_eattr = be64_to_cpu(str->di_eattr);
383 if (S_ISREG(ip->i_inode.i_mode))
384 gfs2_set_aops(&ip->i_inode);
388 if (gfs2_consist_inode(ip))
389 gfs2_dinode_print(ip);
394 * gfs2_inode_refresh - Refresh the incore copy of the dinode
395 * @ip: The GFS2 inode
400 int gfs2_inode_refresh(struct gfs2_inode *ip)
402 struct buffer_head *dibh;
405 error = gfs2_meta_inode_buffer(ip, &dibh);
409 if (gfs2_metatype_check(GFS2_SB(&ip->i_inode), dibh, GFS2_METATYPE_DI)) {
414 error = gfs2_dinode_in(ip, dibh->b_data);
416 clear_bit(GIF_INVALID, &ip->i_flags);
421 int gfs2_dinode_dealloc(struct gfs2_inode *ip)
423 struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
424 struct gfs2_alloc *al;
425 struct gfs2_rgrpd *rgd;
428 if (gfs2_get_inode_blocks(&ip->i_inode) != 1) {
429 if (gfs2_consist_inode(ip))
430 gfs2_dinode_print(ip);
434 al = gfs2_alloc_get(ip);
438 error = gfs2_quota_hold(ip, NO_QUOTA_CHANGE, NO_QUOTA_CHANGE);
442 error = gfs2_rindex_hold(sdp, &al->al_ri_gh);
446 rgd = gfs2_blk2rgrpd(sdp, ip->i_no_addr);
448 gfs2_consist_inode(ip);
450 goto out_rindex_relse;
453 error = gfs2_glock_nq_init(rgd->rd_gl, LM_ST_EXCLUSIVE, 0,
456 goto out_rindex_relse;
458 error = gfs2_trans_begin(sdp, RES_RG_BIT + RES_STATFS + RES_QUOTA, 1);
462 set_bit(GLF_DIRTY, &ip->i_gl->gl_flags);
463 set_bit(GLF_LFLUSH, &ip->i_gl->gl_flags);
465 gfs2_free_di(rgd, ip);
470 gfs2_glock_dq_uninit(&al->al_rgd_gh);
472 gfs2_glock_dq_uninit(&al->al_ri_gh);
474 gfs2_quota_unhold(ip);
481 * gfs2_change_nlink - Change nlink count on inode
482 * @ip: The GFS2 inode
483 * @diff: The change in the nlink count required
487 int gfs2_change_nlink(struct gfs2_inode *ip, int diff)
489 struct buffer_head *dibh;
493 BUG_ON(diff != 1 && diff != -1);
494 nlink = ip->i_inode.i_nlink + diff;
496 /* If we are reducing the nlink count, but the new value ends up being
497 bigger than the old one, we must have underflowed. */
498 if (diff < 0 && nlink > ip->i_inode.i_nlink) {
499 if (gfs2_consist_inode(ip))
500 gfs2_dinode_print(ip);
504 error = gfs2_meta_inode_buffer(ip, &dibh);
509 inc_nlink(&ip->i_inode);
511 drop_nlink(&ip->i_inode);
513 ip->i_inode.i_ctime = CURRENT_TIME;
515 gfs2_trans_add_bh(ip->i_gl, dibh, 1);
516 gfs2_dinode_out(ip, dibh->b_data);
518 mark_inode_dirty(&ip->i_inode);
520 if (ip->i_inode.i_nlink == 0)
521 gfs2_unlink_di(&ip->i_inode); /* mark inode unlinked */
526 struct inode *gfs2_lookup_simple(struct inode *dip, const char *name)
530 gfs2_str2qstr(&qstr, name);
531 inode = gfs2_lookupi(dip, &qstr, 1);
532 /* gfs2_lookupi has inconsistent callers: vfs
533 * related routines expect NULL for no entry found,
534 * gfs2_lookup_simple callers expect ENOENT
535 * and do not check for NULL.
538 return ERR_PTR(-ENOENT);
545 * gfs2_lookupi - Look up a filename in a directory and return its inode
546 * @d_gh: An initialized holder for the directory glock
547 * @name: The name of the inode to look for
548 * @is_root: If 1, ignore the caller's permissions
549 * @i_gh: An uninitialized holder for the new inode glock
551 * This can be called via the VFS filldir function when NFS is doing
552 * a readdirplus and the inode which its intending to stat isn't
553 * already in cache. In this case we must not take the directory glock
554 * again, since the readdir call will have already taken that lock.
559 struct inode *gfs2_lookupi(struct inode *dir, const struct qstr *name,
562 struct super_block *sb = dir->i_sb;
563 struct gfs2_inode *dip = GFS2_I(dir);
564 struct gfs2_holder d_gh;
566 struct inode *inode = NULL;
569 if (!name->len || name->len > GFS2_FNAMESIZE)
570 return ERR_PTR(-ENAMETOOLONG);
572 if ((name->len == 1 && memcmp(name->name, ".", 1) == 0) ||
573 (name->len == 2 && memcmp(name->name, "..", 2) == 0 &&
574 dir == sb->s_root->d_inode)) {
579 if (gfs2_glock_is_locked_by_me(dip->i_gl) == NULL) {
580 error = gfs2_glock_nq_init(dip->i_gl, LM_ST_SHARED, 0, &d_gh);
582 return ERR_PTR(error);
587 error = gfs2_permission(dir, MAY_EXEC);
592 inode = gfs2_dir_search(dir, name);
594 error = PTR_ERR(inode);
597 gfs2_glock_dq_uninit(&d_gh);
598 if (error == -ENOENT)
600 return inode ? inode : ERR_PTR(error);
604 * create_ok - OK to create a new on-disk inode here?
605 * @dip: Directory in which dinode is to be created
606 * @name: Name of new dinode
612 static int create_ok(struct gfs2_inode *dip, const struct qstr *name,
617 error = gfs2_permission(&dip->i_inode, MAY_WRITE | MAY_EXEC);
621 /* Don't create entries in an unlinked directory */
622 if (!dip->i_inode.i_nlink)
625 error = gfs2_dir_check(&dip->i_inode, name, NULL);
636 if (dip->i_entries == (u32)-1)
638 if (S_ISDIR(mode) && dip->i_inode.i_nlink == (u32)-1)
644 static void munge_mode_uid_gid(struct gfs2_inode *dip, unsigned int *mode,
645 unsigned int *uid, unsigned int *gid)
647 if (GFS2_SB(&dip->i_inode)->sd_args.ar_suiddir &&
648 (dip->i_inode.i_mode & S_ISUID) && dip->i_inode.i_uid) {
651 else if (dip->i_inode.i_uid != current_fsuid())
653 *uid = dip->i_inode.i_uid;
655 *uid = current_fsuid();
657 if (dip->i_inode.i_mode & S_ISGID) {
660 *gid = dip->i_inode.i_gid;
662 *gid = current_fsgid();
665 static int alloc_dinode(struct gfs2_inode *dip, u64 *no_addr, u64 *generation)
667 struct gfs2_sbd *sdp = GFS2_SB(&dip->i_inode);
670 if (gfs2_alloc_get(dip) == NULL)
673 dip->i_alloc->al_requested = RES_DINODE;
674 error = gfs2_inplace_reserve(dip);
678 error = gfs2_trans_begin(sdp, RES_RG_BIT + RES_STATFS, 0);
682 error = gfs2_alloc_di(dip, no_addr, generation);
687 gfs2_inplace_release(dip);
694 * init_dinode - Fill in a new dinode structure
695 * @dip: the directory this inode is being created in
696 * @gl: The glock covering the new inode
697 * @inum: the inode number
698 * @mode: the file permissions
704 static void init_dinode(struct gfs2_inode *dip, struct gfs2_glock *gl,
705 const struct gfs2_inum_host *inum, unsigned int mode,
706 unsigned int uid, unsigned int gid,
707 const u64 *generation, dev_t dev, struct buffer_head **bhp)
709 struct gfs2_sbd *sdp = GFS2_SB(&dip->i_inode);
710 struct gfs2_dinode *di;
711 struct buffer_head *dibh;
712 struct timespec tv = CURRENT_TIME;
714 dibh = gfs2_meta_new(gl, inum->no_addr);
715 gfs2_trans_add_bh(gl, dibh, 1);
716 gfs2_metatype_set(dibh, GFS2_METATYPE_DI, GFS2_FORMAT_DI);
717 gfs2_buffer_clear_tail(dibh, sizeof(struct gfs2_dinode));
718 di = (struct gfs2_dinode *)dibh->b_data;
720 di->di_num.no_formal_ino = cpu_to_be64(inum->no_formal_ino);
721 di->di_num.no_addr = cpu_to_be64(inum->no_addr);
722 di->di_mode = cpu_to_be32(mode);
723 di->di_uid = cpu_to_be32(uid);
724 di->di_gid = cpu_to_be32(gid);
727 di->di_blocks = cpu_to_be64(1);
728 di->di_atime = di->di_mtime = di->di_ctime = cpu_to_be64(tv.tv_sec);
729 di->di_major = cpu_to_be32(MAJOR(dev));
730 di->di_minor = cpu_to_be32(MINOR(dev));
731 di->di_goal_meta = di->di_goal_data = cpu_to_be64(inum->no_addr);
732 di->di_generation = cpu_to_be64(*generation);
736 if ((dip->i_diskflags & GFS2_DIF_INHERIT_JDATA) ||
737 gfs2_tune_get(sdp, gt_new_files_jdata))
738 di->di_flags |= cpu_to_be32(GFS2_DIF_JDATA);
739 } else if (S_ISDIR(mode)) {
740 di->di_flags |= cpu_to_be32(dip->i_diskflags &
741 GFS2_DIF_INHERIT_JDATA);
745 di->di_payload_format = cpu_to_be32(S_ISDIR(mode) ? GFS2_FORMAT_DE : 0);
751 memset(&di->__pad4, 0, sizeof(di->__pad4));
753 di->di_atime_nsec = cpu_to_be32(tv.tv_nsec);
754 di->di_mtime_nsec = cpu_to_be32(tv.tv_nsec);
755 di->di_ctime_nsec = cpu_to_be32(tv.tv_nsec);
756 memset(&di->di_reserved, 0, sizeof(di->di_reserved));
758 set_buffer_uptodate(dibh);
763 static int make_dinode(struct gfs2_inode *dip, struct gfs2_glock *gl,
764 unsigned int mode, const struct gfs2_inum_host *inum,
765 const u64 *generation, dev_t dev, struct buffer_head **bhp)
767 struct gfs2_sbd *sdp = GFS2_SB(&dip->i_inode);
768 unsigned int uid, gid;
771 munge_mode_uid_gid(dip, &mode, &uid, &gid);
772 if (!gfs2_alloc_get(dip))
775 error = gfs2_quota_lock(dip, uid, gid);
779 error = gfs2_quota_check(dip, uid, gid);
783 error = gfs2_trans_begin(sdp, RES_DINODE + RES_QUOTA, 0);
787 init_dinode(dip, gl, inum, mode, uid, gid, generation, dev, bhp);
788 gfs2_quota_change(dip, +1, uid, gid);
792 gfs2_quota_unlock(dip);
798 static int link_dinode(struct gfs2_inode *dip, const struct qstr *name,
799 struct gfs2_inode *ip)
801 struct gfs2_sbd *sdp = GFS2_SB(&dip->i_inode);
802 struct gfs2_alloc *al;
804 struct buffer_head *dibh;
807 al = gfs2_alloc_get(dip);
811 error = gfs2_quota_lock(dip, NO_QUOTA_CHANGE, NO_QUOTA_CHANGE);
815 error = alloc_required = gfs2_diradd_alloc_required(&dip->i_inode, name);
816 if (alloc_required < 0)
817 goto fail_quota_locks;
818 if (alloc_required) {
819 error = gfs2_quota_check(dip, dip->i_inode.i_uid, dip->i_inode.i_gid);
821 goto fail_quota_locks;
823 al->al_requested = sdp->sd_max_dirres;
825 error = gfs2_inplace_reserve(dip);
827 goto fail_quota_locks;
829 error = gfs2_trans_begin(sdp, sdp->sd_max_dirres +
830 al->al_rgd->rd_length +
832 RES_STATFS + RES_QUOTA, 0);
836 error = gfs2_trans_begin(sdp, RES_LEAF + 2 * RES_DINODE, 0);
838 goto fail_quota_locks;
841 error = gfs2_dir_add(&dip->i_inode, name, ip, IF2DT(ip->i_inode.i_mode));
845 error = gfs2_meta_inode_buffer(ip, &dibh);
848 ip->i_inode.i_nlink = 1;
849 gfs2_trans_add_bh(ip->i_gl, dibh, 1);
850 gfs2_dinode_out(ip, dibh->b_data);
858 if (dip->i_alloc->al_rgd)
859 gfs2_inplace_release(dip);
862 gfs2_quota_unlock(dip);
869 static int gfs2_security_init(struct gfs2_inode *dip, struct gfs2_inode *ip)
876 err = security_inode_init_security(&ip->i_inode, &dip->i_inode,
877 &name, &value, &len);
880 if (err == -EOPNOTSUPP)
885 err = __gfs2_xattr_set(&ip->i_inode, name, value, len, 0,
886 GFS2_EATYPE_SECURITY);
894 * gfs2_createi - Create a new inode
895 * @ghs: An array of two holders
896 * @name: The name of the new file
897 * @mode: the permissions on the new inode
899 * @ghs[0] is an initialized holder for the directory
900 * @ghs[1] is the holder for the inode lock
902 * If the return value is not NULL, the glocks on both the directory and the new
903 * file are held. A transaction has been started and an inplace reservation
909 struct inode *gfs2_createi(struct gfs2_holder *ghs, const struct qstr *name,
910 unsigned int mode, dev_t dev)
912 struct inode *inode = NULL;
913 struct gfs2_inode *dip = ghs->gh_gl->gl_object;
914 struct inode *dir = &dip->i_inode;
915 struct gfs2_sbd *sdp = GFS2_SB(&dip->i_inode);
916 struct gfs2_inum_host inum = { .no_addr = 0, .no_formal_ino = 0 };
919 struct buffer_head *bh = NULL;
921 if (!name->len || name->len > GFS2_FNAMESIZE)
922 return ERR_PTR(-ENAMETOOLONG);
924 gfs2_holder_reinit(LM_ST_EXCLUSIVE, 0, ghs);
925 error = gfs2_glock_nq(ghs);
929 error = create_ok(dip, name, mode);
933 error = alloc_dinode(dip, &inum.no_addr, &generation);
936 inum.no_formal_ino = generation;
938 error = gfs2_glock_nq_num(sdp, inum.no_addr, &gfs2_inode_glops,
939 LM_ST_EXCLUSIVE, GL_SKIP, ghs + 1);
943 error = make_dinode(dip, ghs[1].gh_gl, mode, &inum, &generation, dev, &bh);
947 inode = gfs2_inode_lookup(dir->i_sb, IF2DT(mode), inum.no_addr,
952 error = gfs2_inode_refresh(GFS2_I(inode));
956 error = gfs2_acl_create(dip, inode);
960 error = gfs2_security_init(dip, GFS2_I(inode));
964 error = link_dinode(dip, name, GFS2_I(inode));
973 gfs2_glock_dq_uninit(ghs + 1);
974 if (inode && !IS_ERR(inode))
981 return ERR_PTR(error);
984 static int __gfs2_setattr_simple(struct gfs2_inode *ip, struct iattr *attr)
986 struct buffer_head *dibh;
989 error = gfs2_meta_inode_buffer(ip, &dibh);
991 error = inode_setattr(&ip->i_inode, attr);
992 gfs2_assert_warn(GFS2_SB(&ip->i_inode), !error);
993 gfs2_trans_add_bh(ip->i_gl, dibh, 1);
994 gfs2_dinode_out(ip, dibh->b_data);
1001 * gfs2_setattr_simple -
1005 * Called with a reference on the vnode.
1010 int gfs2_setattr_simple(struct gfs2_inode *ip, struct iattr *attr)
1014 if (current->journal_info)
1015 return __gfs2_setattr_simple(ip, attr);
1017 error = gfs2_trans_begin(GFS2_SB(&ip->i_inode), RES_DINODE, 0);
1021 error = __gfs2_setattr_simple(ip, attr);
1022 gfs2_trans_end(GFS2_SB(&ip->i_inode));
1026 void gfs2_dinode_out(const struct gfs2_inode *ip, void *buf)
1028 struct gfs2_dinode *str = buf;
1030 str->di_header.mh_magic = cpu_to_be32(GFS2_MAGIC);
1031 str->di_header.mh_type = cpu_to_be32(GFS2_METATYPE_DI);
1032 str->di_header.mh_format = cpu_to_be32(GFS2_FORMAT_DI);
1033 str->di_num.no_addr = cpu_to_be64(ip->i_no_addr);
1034 str->di_num.no_formal_ino = cpu_to_be64(ip->i_no_formal_ino);
1035 str->di_mode = cpu_to_be32(ip->i_inode.i_mode);
1036 str->di_uid = cpu_to_be32(ip->i_inode.i_uid);
1037 str->di_gid = cpu_to_be32(ip->i_inode.i_gid);
1038 str->di_nlink = cpu_to_be32(ip->i_inode.i_nlink);
1039 str->di_size = cpu_to_be64(ip->i_disksize);
1040 str->di_blocks = cpu_to_be64(gfs2_get_inode_blocks(&ip->i_inode));
1041 str->di_atime = cpu_to_be64(ip->i_inode.i_atime.tv_sec);
1042 str->di_mtime = cpu_to_be64(ip->i_inode.i_mtime.tv_sec);
1043 str->di_ctime = cpu_to_be64(ip->i_inode.i_ctime.tv_sec);
1045 str->di_goal_meta = cpu_to_be64(ip->i_goal);
1046 str->di_goal_data = cpu_to_be64(ip->i_goal);
1047 str->di_generation = cpu_to_be64(ip->i_generation);
1049 str->di_flags = cpu_to_be32(ip->i_diskflags);
1050 str->di_height = cpu_to_be16(ip->i_height);
1051 str->di_payload_format = cpu_to_be32(S_ISDIR(ip->i_inode.i_mode) &&
1052 !(ip->i_diskflags & GFS2_DIF_EXHASH) ?
1053 GFS2_FORMAT_DE : 0);
1054 str->di_depth = cpu_to_be16(ip->i_depth);
1055 str->di_entries = cpu_to_be32(ip->i_entries);
1057 str->di_eattr = cpu_to_be64(ip->i_eattr);
1058 str->di_atime_nsec = cpu_to_be32(ip->i_inode.i_atime.tv_nsec);
1059 str->di_mtime_nsec = cpu_to_be32(ip->i_inode.i_mtime.tv_nsec);
1060 str->di_ctime_nsec = cpu_to_be32(ip->i_inode.i_ctime.tv_nsec);
1063 void gfs2_dinode_print(const struct gfs2_inode *ip)
1065 printk(KERN_INFO " no_formal_ino = %llu\n",
1066 (unsigned long long)ip->i_no_formal_ino);
1067 printk(KERN_INFO " no_addr = %llu\n",
1068 (unsigned long long)ip->i_no_addr);
1069 printk(KERN_INFO " i_disksize = %llu\n",
1070 (unsigned long long)ip->i_disksize);
1071 printk(KERN_INFO " blocks = %llu\n",
1072 (unsigned long long)gfs2_get_inode_blocks(&ip->i_inode));
1073 printk(KERN_INFO " i_goal = %llu\n",
1074 (unsigned long long)ip->i_goal);
1075 printk(KERN_INFO " i_diskflags = 0x%.8X\n", ip->i_diskflags);
1076 printk(KERN_INFO " i_height = %u\n", ip->i_height);
1077 printk(KERN_INFO " i_depth = %u\n", ip->i_depth);
1078 printk(KERN_INFO " i_entries = %u\n", ip->i_entries);
1079 printk(KERN_INFO " i_eattr = %llu\n",
1080 (unsigned long long)ip->i_eattr);