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_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 = NULL;
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);
203 if ((type == DT_UNKNOWN) && (no_formal_ino == 0))
206 inode->i_mode = DT2IF(type);
209 * We must read the inode in order to work out its type in
210 * this case. Note that this doesn't happen often as we normally
211 * know the type beforehand. This code path only occurs during
212 * unlinked inode recovery (where it is safe to do this glock,
213 * which is not true in the general case).
215 if (type == DT_UNKNOWN) {
216 struct gfs2_holder gh;
217 error = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, &gh);
220 /* Inode is now uptodate */
221 gfs2_glock_dq_uninit(&gh);
230 gfs2_glock_dq(&ip->i_iopen_gh);
233 gfs2_glock_put(io_gl);
235 if (inode->i_state & I_NEW)
236 ip->i_gl->gl_object = NULL;
237 gfs2_glock_put(ip->i_gl);
239 if (inode->i_state & I_NEW)
243 return ERR_PTR(error);
247 * gfs2_process_unlinked_inode - Lookup an unlinked inode for reclamation
248 * and try to reclaim it by doing iput.
250 * This function assumes no rgrp locks are currently held.
252 * @sb: The super block
253 * no_addr: The inode number
257 void gfs2_process_unlinked_inode(struct super_block *sb, u64 no_addr)
259 struct gfs2_sbd *sdp;
260 struct gfs2_inode *ip;
261 struct gfs2_glock *io_gl = NULL;
263 struct gfs2_holder gh;
266 inode = gfs2_iget_skip(sb, no_addr);
271 /* If it's not a new inode, someone's using it, so leave it alone. */
272 if (!(inode->i_state & I_NEW)) {
278 sdp = GFS2_SB(inode);
279 ip->i_no_formal_ino = -1;
281 error = gfs2_glock_get(sdp, no_addr, &gfs2_inode_glops, CREATE, &ip->i_gl);
284 ip->i_gl->gl_object = ip;
286 error = gfs2_glock_get(sdp, no_addr, &gfs2_iopen_glops, CREATE, &io_gl);
290 set_bit(GIF_INVALID, &ip->i_flags);
291 error = gfs2_glock_nq_init(io_gl, LM_ST_SHARED, LM_FLAG_TRY | GL_EXACT,
296 ip->i_iopen_gh.gh_gl->gl_object = ip;
297 gfs2_glock_put(io_gl);
300 inode->i_mode = DT2IF(DT_UNKNOWN);
303 * We must read the inode in order to work out its type in
304 * this case. Note that this doesn't happen often as we normally
305 * know the type beforehand. This code path only occurs during
306 * unlinked inode recovery (where it is safe to do this glock,
307 * which is not true in the general case).
309 error = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, LM_FLAG_TRY,
314 /* Inode is now uptodate */
315 gfs2_glock_dq_uninit(&gh);
318 /* The iput will cause it to be deleted. */
323 gfs2_glock_dq(&ip->i_iopen_gh);
326 gfs2_glock_put(io_gl);
328 ip->i_gl->gl_object = NULL;
329 gfs2_glock_put(ip->i_gl);
335 static int gfs2_dinode_in(struct gfs2_inode *ip, const void *buf)
337 const struct gfs2_dinode *str = buf;
338 struct timespec atime;
341 if (unlikely(ip->i_no_addr != be64_to_cpu(str->di_num.no_addr)))
343 ip->i_no_formal_ino = be64_to_cpu(str->di_num.no_formal_ino);
344 ip->i_inode.i_mode = be32_to_cpu(str->di_mode);
345 ip->i_inode.i_rdev = 0;
346 switch (ip->i_inode.i_mode & S_IFMT) {
349 ip->i_inode.i_rdev = MKDEV(be32_to_cpu(str->di_major),
350 be32_to_cpu(str->di_minor));
354 ip->i_inode.i_uid = be32_to_cpu(str->di_uid);
355 ip->i_inode.i_gid = be32_to_cpu(str->di_gid);
357 * We will need to review setting the nlink count here in the
358 * light of the forthcoming ro bind mount work. This is a reminder
361 ip->i_inode.i_nlink = be32_to_cpu(str->di_nlink);
362 ip->i_disksize = be64_to_cpu(str->di_size);
363 i_size_write(&ip->i_inode, ip->i_disksize);
364 gfs2_set_inode_blocks(&ip->i_inode, be64_to_cpu(str->di_blocks));
365 atime.tv_sec = be64_to_cpu(str->di_atime);
366 atime.tv_nsec = be32_to_cpu(str->di_atime_nsec);
367 if (timespec_compare(&ip->i_inode.i_atime, &atime) < 0)
368 ip->i_inode.i_atime = atime;
369 ip->i_inode.i_mtime.tv_sec = be64_to_cpu(str->di_mtime);
370 ip->i_inode.i_mtime.tv_nsec = be32_to_cpu(str->di_mtime_nsec);
371 ip->i_inode.i_ctime.tv_sec = be64_to_cpu(str->di_ctime);
372 ip->i_inode.i_ctime.tv_nsec = be32_to_cpu(str->di_ctime_nsec);
374 ip->i_goal = be64_to_cpu(str->di_goal_meta);
375 ip->i_generation = be64_to_cpu(str->di_generation);
377 ip->i_diskflags = be32_to_cpu(str->di_flags);
378 gfs2_set_inode_flags(&ip->i_inode);
379 height = be16_to_cpu(str->di_height);
380 if (unlikely(height > GFS2_MAX_META_HEIGHT))
382 ip->i_height = (u8)height;
384 depth = be16_to_cpu(str->di_depth);
385 if (unlikely(depth > GFS2_DIR_MAX_DEPTH))
387 ip->i_depth = (u8)depth;
388 ip->i_entries = be32_to_cpu(str->di_entries);
390 ip->i_eattr = be64_to_cpu(str->di_eattr);
391 if (S_ISREG(ip->i_inode.i_mode))
392 gfs2_set_aops(&ip->i_inode);
396 if (gfs2_consist_inode(ip))
397 gfs2_dinode_print(ip);
402 * gfs2_inode_refresh - Refresh the incore copy of the dinode
403 * @ip: The GFS2 inode
408 int gfs2_inode_refresh(struct gfs2_inode *ip)
410 struct buffer_head *dibh;
413 error = gfs2_meta_inode_buffer(ip, &dibh);
417 if (gfs2_metatype_check(GFS2_SB(&ip->i_inode), dibh, GFS2_METATYPE_DI)) {
422 error = gfs2_dinode_in(ip, dibh->b_data);
424 clear_bit(GIF_INVALID, &ip->i_flags);
429 int gfs2_dinode_dealloc(struct gfs2_inode *ip)
431 struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
432 struct gfs2_alloc *al;
433 struct gfs2_rgrpd *rgd;
436 if (gfs2_get_inode_blocks(&ip->i_inode) != 1) {
437 if (gfs2_consist_inode(ip))
438 gfs2_dinode_print(ip);
442 al = gfs2_alloc_get(ip);
446 error = gfs2_quota_hold(ip, NO_QUOTA_CHANGE, NO_QUOTA_CHANGE);
450 error = gfs2_rindex_hold(sdp, &al->al_ri_gh);
454 rgd = gfs2_blk2rgrpd(sdp, ip->i_no_addr);
456 gfs2_consist_inode(ip);
458 goto out_rindex_relse;
461 error = gfs2_glock_nq_init(rgd->rd_gl, LM_ST_EXCLUSIVE, 0,
464 goto out_rindex_relse;
466 error = gfs2_trans_begin(sdp, RES_RG_BIT + RES_STATFS + RES_QUOTA, 1);
470 set_bit(GLF_DIRTY, &ip->i_gl->gl_flags);
471 set_bit(GLF_LFLUSH, &ip->i_gl->gl_flags);
473 gfs2_free_di(rgd, ip);
478 gfs2_glock_dq_uninit(&al->al_rgd_gh);
480 gfs2_glock_dq_uninit(&al->al_ri_gh);
482 gfs2_quota_unhold(ip);
489 * gfs2_change_nlink - Change nlink count on inode
490 * @ip: The GFS2 inode
491 * @diff: The change in the nlink count required
495 int gfs2_change_nlink(struct gfs2_inode *ip, int diff)
497 struct buffer_head *dibh;
501 BUG_ON(diff != 1 && diff != -1);
502 nlink = ip->i_inode.i_nlink + diff;
504 /* If we are reducing the nlink count, but the new value ends up being
505 bigger than the old one, we must have underflowed. */
506 if (diff < 0 && nlink > ip->i_inode.i_nlink) {
507 if (gfs2_consist_inode(ip))
508 gfs2_dinode_print(ip);
512 error = gfs2_meta_inode_buffer(ip, &dibh);
517 inc_nlink(&ip->i_inode);
519 drop_nlink(&ip->i_inode);
521 ip->i_inode.i_ctime = CURRENT_TIME;
523 gfs2_trans_add_bh(ip->i_gl, dibh, 1);
524 gfs2_dinode_out(ip, dibh->b_data);
526 mark_inode_dirty(&ip->i_inode);
528 if (ip->i_inode.i_nlink == 0)
529 gfs2_unlink_di(&ip->i_inode); /* mark inode unlinked */
534 struct inode *gfs2_lookup_simple(struct inode *dip, const char *name)
538 gfs2_str2qstr(&qstr, name);
539 inode = gfs2_lookupi(dip, &qstr, 1);
540 /* gfs2_lookupi has inconsistent callers: vfs
541 * related routines expect NULL for no entry found,
542 * gfs2_lookup_simple callers expect ENOENT
543 * and do not check for NULL.
546 return ERR_PTR(-ENOENT);
553 * gfs2_lookupi - Look up a filename in a directory and return its inode
554 * @d_gh: An initialized holder for the directory glock
555 * @name: The name of the inode to look for
556 * @is_root: If 1, ignore the caller's permissions
557 * @i_gh: An uninitialized holder for the new inode glock
559 * This can be called via the VFS filldir function when NFS is doing
560 * a readdirplus and the inode which its intending to stat isn't
561 * already in cache. In this case we must not take the directory glock
562 * again, since the readdir call will have already taken that lock.
567 struct inode *gfs2_lookupi(struct inode *dir, const struct qstr *name,
570 struct super_block *sb = dir->i_sb;
571 struct gfs2_inode *dip = GFS2_I(dir);
572 struct gfs2_holder d_gh;
574 struct inode *inode = NULL;
577 if (!name->len || name->len > GFS2_FNAMESIZE)
578 return ERR_PTR(-ENAMETOOLONG);
580 if ((name->len == 1 && memcmp(name->name, ".", 1) == 0) ||
581 (name->len == 2 && memcmp(name->name, "..", 2) == 0 &&
582 dir == sb->s_root->d_inode)) {
587 if (gfs2_glock_is_locked_by_me(dip->i_gl) == NULL) {
588 error = gfs2_glock_nq_init(dip->i_gl, LM_ST_SHARED, 0, &d_gh);
590 return ERR_PTR(error);
595 error = gfs2_permission(dir, MAY_EXEC);
600 inode = gfs2_dir_search(dir, name);
602 error = PTR_ERR(inode);
605 gfs2_glock_dq_uninit(&d_gh);
606 if (error == -ENOENT)
608 return inode ? inode : ERR_PTR(error);
612 * create_ok - OK to create a new on-disk inode here?
613 * @dip: Directory in which dinode is to be created
614 * @name: Name of new dinode
620 static int create_ok(struct gfs2_inode *dip, const struct qstr *name,
625 error = gfs2_permission(&dip->i_inode, MAY_WRITE | MAY_EXEC);
629 /* Don't create entries in an unlinked directory */
630 if (!dip->i_inode.i_nlink)
633 error = gfs2_dir_check(&dip->i_inode, name, NULL);
644 if (dip->i_entries == (u32)-1)
646 if (S_ISDIR(mode) && dip->i_inode.i_nlink == (u32)-1)
652 static void munge_mode_uid_gid(struct gfs2_inode *dip, unsigned int *mode,
653 unsigned int *uid, unsigned int *gid)
655 if (GFS2_SB(&dip->i_inode)->sd_args.ar_suiddir &&
656 (dip->i_inode.i_mode & S_ISUID) && dip->i_inode.i_uid) {
659 else if (dip->i_inode.i_uid != current_fsuid())
661 *uid = dip->i_inode.i_uid;
663 *uid = current_fsuid();
665 if (dip->i_inode.i_mode & S_ISGID) {
668 *gid = dip->i_inode.i_gid;
670 *gid = current_fsgid();
673 static int alloc_dinode(struct gfs2_inode *dip, u64 *no_addr, u64 *generation)
675 struct gfs2_sbd *sdp = GFS2_SB(&dip->i_inode);
678 if (gfs2_alloc_get(dip) == NULL)
681 dip->i_alloc->al_requested = RES_DINODE;
682 error = gfs2_inplace_reserve(dip);
686 error = gfs2_trans_begin(sdp, RES_RG_BIT + RES_STATFS, 0);
690 error = gfs2_alloc_di(dip, no_addr, generation);
695 gfs2_inplace_release(dip);
702 * init_dinode - Fill in a new dinode structure
703 * @dip: the directory this inode is being created in
704 * @gl: The glock covering the new inode
705 * @inum: the inode number
706 * @mode: the file permissions
712 static void init_dinode(struct gfs2_inode *dip, struct gfs2_glock *gl,
713 const struct gfs2_inum_host *inum, unsigned int mode,
714 unsigned int uid, unsigned int gid,
715 const u64 *generation, dev_t dev, struct buffer_head **bhp)
717 struct gfs2_sbd *sdp = GFS2_SB(&dip->i_inode);
718 struct gfs2_dinode *di;
719 struct buffer_head *dibh;
720 struct timespec tv = CURRENT_TIME;
722 dibh = gfs2_meta_new(gl, inum->no_addr);
723 gfs2_trans_add_bh(gl, dibh, 1);
724 gfs2_metatype_set(dibh, GFS2_METATYPE_DI, GFS2_FORMAT_DI);
725 gfs2_buffer_clear_tail(dibh, sizeof(struct gfs2_dinode));
726 di = (struct gfs2_dinode *)dibh->b_data;
728 di->di_num.no_formal_ino = cpu_to_be64(inum->no_formal_ino);
729 di->di_num.no_addr = cpu_to_be64(inum->no_addr);
730 di->di_mode = cpu_to_be32(mode);
731 di->di_uid = cpu_to_be32(uid);
732 di->di_gid = cpu_to_be32(gid);
735 di->di_blocks = cpu_to_be64(1);
736 di->di_atime = di->di_mtime = di->di_ctime = cpu_to_be64(tv.tv_sec);
737 di->di_major = cpu_to_be32(MAJOR(dev));
738 di->di_minor = cpu_to_be32(MINOR(dev));
739 di->di_goal_meta = di->di_goal_data = cpu_to_be64(inum->no_addr);
740 di->di_generation = cpu_to_be64(*generation);
744 if ((dip->i_diskflags & GFS2_DIF_INHERIT_JDATA) ||
745 gfs2_tune_get(sdp, gt_new_files_jdata))
746 di->di_flags |= cpu_to_be32(GFS2_DIF_JDATA);
747 } else if (S_ISDIR(mode)) {
748 di->di_flags |= cpu_to_be32(dip->i_diskflags &
749 GFS2_DIF_INHERIT_JDATA);
753 di->di_payload_format = cpu_to_be32(S_ISDIR(mode) ? GFS2_FORMAT_DE : 0);
759 memset(&di->__pad4, 0, sizeof(di->__pad4));
761 di->di_atime_nsec = cpu_to_be32(tv.tv_nsec);
762 di->di_mtime_nsec = cpu_to_be32(tv.tv_nsec);
763 di->di_ctime_nsec = cpu_to_be32(tv.tv_nsec);
764 memset(&di->di_reserved, 0, sizeof(di->di_reserved));
766 set_buffer_uptodate(dibh);
771 static int make_dinode(struct gfs2_inode *dip, struct gfs2_glock *gl,
772 unsigned int mode, const struct gfs2_inum_host *inum,
773 const u64 *generation, dev_t dev, struct buffer_head **bhp)
775 struct gfs2_sbd *sdp = GFS2_SB(&dip->i_inode);
776 unsigned int uid, gid;
779 munge_mode_uid_gid(dip, &mode, &uid, &gid);
780 if (!gfs2_alloc_get(dip))
783 error = gfs2_quota_lock(dip, uid, gid);
787 error = gfs2_quota_check(dip, uid, gid);
791 error = gfs2_trans_begin(sdp, RES_DINODE + RES_QUOTA, 0);
795 init_dinode(dip, gl, inum, mode, uid, gid, generation, dev, bhp);
796 gfs2_quota_change(dip, +1, uid, gid);
800 gfs2_quota_unlock(dip);
806 static int link_dinode(struct gfs2_inode *dip, const struct qstr *name,
807 struct gfs2_inode *ip)
809 struct gfs2_sbd *sdp = GFS2_SB(&dip->i_inode);
810 struct gfs2_alloc *al;
812 struct buffer_head *dibh;
815 al = gfs2_alloc_get(dip);
819 error = gfs2_quota_lock(dip, NO_QUOTA_CHANGE, NO_QUOTA_CHANGE);
823 error = alloc_required = gfs2_diradd_alloc_required(&dip->i_inode, name);
824 if (alloc_required < 0)
825 goto fail_quota_locks;
826 if (alloc_required) {
827 error = gfs2_quota_check(dip, dip->i_inode.i_uid, dip->i_inode.i_gid);
829 goto fail_quota_locks;
831 al->al_requested = sdp->sd_max_dirres;
833 error = gfs2_inplace_reserve(dip);
835 goto fail_quota_locks;
837 error = gfs2_trans_begin(sdp, sdp->sd_max_dirres +
838 al->al_rgd->rd_length +
840 RES_STATFS + RES_QUOTA, 0);
844 error = gfs2_trans_begin(sdp, RES_LEAF + 2 * RES_DINODE, 0);
846 goto fail_quota_locks;
849 error = gfs2_dir_add(&dip->i_inode, name, ip, IF2DT(ip->i_inode.i_mode));
853 error = gfs2_meta_inode_buffer(ip, &dibh);
856 ip->i_inode.i_nlink = 1;
857 gfs2_trans_add_bh(ip->i_gl, dibh, 1);
858 gfs2_dinode_out(ip, dibh->b_data);
866 if (dip->i_alloc->al_rgd)
867 gfs2_inplace_release(dip);
870 gfs2_quota_unlock(dip);
877 static int gfs2_security_init(struct gfs2_inode *dip, struct gfs2_inode *ip)
884 err = security_inode_init_security(&ip->i_inode, &dip->i_inode,
885 &name, &value, &len);
888 if (err == -EOPNOTSUPP)
893 err = __gfs2_xattr_set(&ip->i_inode, name, value, len, 0,
894 GFS2_EATYPE_SECURITY);
902 * gfs2_createi - Create a new inode
903 * @ghs: An array of two holders
904 * @name: The name of the new file
905 * @mode: the permissions on the new inode
907 * @ghs[0] is an initialized holder for the directory
908 * @ghs[1] is the holder for the inode lock
910 * If the return value is not NULL, the glocks on both the directory and the new
911 * file are held. A transaction has been started and an inplace reservation
917 struct inode *gfs2_createi(struct gfs2_holder *ghs, const struct qstr *name,
918 unsigned int mode, dev_t dev)
920 struct inode *inode = NULL;
921 struct gfs2_inode *dip = ghs->gh_gl->gl_object;
922 struct inode *dir = &dip->i_inode;
923 struct gfs2_sbd *sdp = GFS2_SB(&dip->i_inode);
924 struct gfs2_inum_host inum = { .no_addr = 0, .no_formal_ino = 0 };
927 struct buffer_head *bh = NULL;
929 if (!name->len || name->len > GFS2_FNAMESIZE)
930 return ERR_PTR(-ENAMETOOLONG);
932 gfs2_holder_reinit(LM_ST_EXCLUSIVE, 0, ghs);
933 error = gfs2_glock_nq(ghs);
937 error = create_ok(dip, name, mode);
941 error = alloc_dinode(dip, &inum.no_addr, &generation);
944 inum.no_formal_ino = generation;
946 error = gfs2_glock_nq_num(sdp, inum.no_addr, &gfs2_inode_glops,
947 LM_ST_EXCLUSIVE, GL_SKIP, ghs + 1);
951 error = make_dinode(dip, ghs[1].gh_gl, mode, &inum, &generation, dev, &bh);
955 inode = gfs2_inode_lookup(dir->i_sb, IF2DT(mode), inum.no_addr,
960 error = gfs2_inode_refresh(GFS2_I(inode));
964 error = gfs2_acl_create(dip, inode);
968 error = gfs2_security_init(dip, GFS2_I(inode));
972 error = link_dinode(dip, name, GFS2_I(inode));
981 gfs2_glock_dq_uninit(ghs + 1);
982 if (inode && !IS_ERR(inode))
989 return ERR_PTR(error);
992 static int __gfs2_setattr_simple(struct gfs2_inode *ip, struct iattr *attr)
994 struct inode *inode = &ip->i_inode;
995 struct buffer_head *dibh;
998 error = gfs2_meta_inode_buffer(ip, &dibh);
1002 if ((attr->ia_valid & ATTR_SIZE) &&
1003 attr->ia_size != i_size_read(inode)) {
1004 error = vmtruncate(inode, attr->ia_size);
1009 setattr_copy(inode, attr);
1010 mark_inode_dirty(inode);
1012 gfs2_assert_warn(GFS2_SB(inode), !error);
1013 gfs2_trans_add_bh(ip->i_gl, dibh, 1);
1014 gfs2_dinode_out(ip, dibh->b_data);
1020 * gfs2_setattr_simple -
1024 * Called with a reference on the vnode.
1029 int gfs2_setattr_simple(struct gfs2_inode *ip, struct iattr *attr)
1033 if (current->journal_info)
1034 return __gfs2_setattr_simple(ip, attr);
1036 error = gfs2_trans_begin(GFS2_SB(&ip->i_inode), RES_DINODE, 0);
1040 error = __gfs2_setattr_simple(ip, attr);
1041 gfs2_trans_end(GFS2_SB(&ip->i_inode));
1045 void gfs2_dinode_out(const struct gfs2_inode *ip, void *buf)
1047 struct gfs2_dinode *str = buf;
1049 str->di_header.mh_magic = cpu_to_be32(GFS2_MAGIC);
1050 str->di_header.mh_type = cpu_to_be32(GFS2_METATYPE_DI);
1051 str->di_header.mh_format = cpu_to_be32(GFS2_FORMAT_DI);
1052 str->di_num.no_addr = cpu_to_be64(ip->i_no_addr);
1053 str->di_num.no_formal_ino = cpu_to_be64(ip->i_no_formal_ino);
1054 str->di_mode = cpu_to_be32(ip->i_inode.i_mode);
1055 str->di_uid = cpu_to_be32(ip->i_inode.i_uid);
1056 str->di_gid = cpu_to_be32(ip->i_inode.i_gid);
1057 str->di_nlink = cpu_to_be32(ip->i_inode.i_nlink);
1058 str->di_size = cpu_to_be64(ip->i_disksize);
1059 str->di_blocks = cpu_to_be64(gfs2_get_inode_blocks(&ip->i_inode));
1060 str->di_atime = cpu_to_be64(ip->i_inode.i_atime.tv_sec);
1061 str->di_mtime = cpu_to_be64(ip->i_inode.i_mtime.tv_sec);
1062 str->di_ctime = cpu_to_be64(ip->i_inode.i_ctime.tv_sec);
1064 str->di_goal_meta = cpu_to_be64(ip->i_goal);
1065 str->di_goal_data = cpu_to_be64(ip->i_goal);
1066 str->di_generation = cpu_to_be64(ip->i_generation);
1068 str->di_flags = cpu_to_be32(ip->i_diskflags);
1069 str->di_height = cpu_to_be16(ip->i_height);
1070 str->di_payload_format = cpu_to_be32(S_ISDIR(ip->i_inode.i_mode) &&
1071 !(ip->i_diskflags & GFS2_DIF_EXHASH) ?
1072 GFS2_FORMAT_DE : 0);
1073 str->di_depth = cpu_to_be16(ip->i_depth);
1074 str->di_entries = cpu_to_be32(ip->i_entries);
1076 str->di_eattr = cpu_to_be64(ip->i_eattr);
1077 str->di_atime_nsec = cpu_to_be32(ip->i_inode.i_atime.tv_nsec);
1078 str->di_mtime_nsec = cpu_to_be32(ip->i_inode.i_mtime.tv_nsec);
1079 str->di_ctime_nsec = cpu_to_be32(ip->i_inode.i_ctime.tv_nsec);
1082 void gfs2_dinode_print(const struct gfs2_inode *ip)
1084 printk(KERN_INFO " no_formal_ino = %llu\n",
1085 (unsigned long long)ip->i_no_formal_ino);
1086 printk(KERN_INFO " no_addr = %llu\n",
1087 (unsigned long long)ip->i_no_addr);
1088 printk(KERN_INFO " i_disksize = %llu\n",
1089 (unsigned long long)ip->i_disksize);
1090 printk(KERN_INFO " blocks = %llu\n",
1091 (unsigned long long)gfs2_get_inode_blocks(&ip->i_inode));
1092 printk(KERN_INFO " i_goal = %llu\n",
1093 (unsigned long long)ip->i_goal);
1094 printk(KERN_INFO " i_diskflags = 0x%.8X\n", ip->i_diskflags);
1095 printk(KERN_INFO " i_height = %u\n", ip->i_height);
1096 printk(KERN_INFO " i_depth = %u\n", ip->i_depth);
1097 printk(KERN_INFO " i_entries = %u\n", ip->i_entries);
1098 printk(KERN_INFO " i_eattr = %llu\n",
1099 (unsigned long long)ip->i_eattr);