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 && test_bit(GIF_USER, &ip->i_flags))
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;
61 set_bit(GIF_USER, &ip->i_flags);
65 struct inode *gfs2_ilookup(struct super_block *sb, u64 no_addr)
67 unsigned long hash = (unsigned long)no_addr;
68 return ilookup5(sb, hash, iget_test, &no_addr);
71 static struct inode *gfs2_iget(struct super_block *sb, u64 no_addr)
73 unsigned long hash = (unsigned long)no_addr;
74 return iget5_locked(sb, hash, iget_test, iget_set, &no_addr);
77 struct gfs2_skip_data {
82 static int iget_skip_test(struct inode *inode, void *opaque)
84 struct gfs2_inode *ip = GFS2_I(inode);
85 struct gfs2_skip_data *data = opaque;
87 if (ip->i_no_addr == data->no_addr && test_bit(GIF_USER, &ip->i_flags)){
88 if (inode->i_state & (I_FREEING|I_CLEAR|I_WILL_FREE)){
97 static int iget_skip_set(struct inode *inode, void *opaque)
99 struct gfs2_inode *ip = GFS2_I(inode);
100 struct gfs2_skip_data *data = opaque;
104 inode->i_ino = (unsigned long)(data->no_addr);
105 ip->i_no_addr = data->no_addr;
106 set_bit(GIF_USER, &ip->i_flags);
110 static struct inode *gfs2_iget_skip(struct super_block *sb,
113 struct gfs2_skip_data data;
114 unsigned long hash = (unsigned long)no_addr;
116 data.no_addr = no_addr;
118 return iget5_locked(sb, hash, iget_skip_test, iget_skip_set, &data);
122 * GFS2 lookup code fills in vfs inode contents based on info obtained
123 * from directory entry inside gfs2_inode_lookup(). This has caused issues
124 * with NFS code path since its get_dentry routine doesn't have the relevant
125 * directory entry when gfs2_inode_lookup() is invoked. Part of the code
126 * segment inside gfs2_inode_lookup code needs to get moved around.
128 * Clean up I_LOCK and I_NEW as well.
131 void gfs2_set_iop(struct inode *inode)
133 struct gfs2_sbd *sdp = GFS2_SB(inode);
134 umode_t mode = inode->i_mode;
137 inode->i_op = &gfs2_file_iops;
138 if (gfs2_localflocks(sdp))
139 inode->i_fop = &gfs2_file_fops_nolock;
141 inode->i_fop = &gfs2_file_fops;
142 } else if (S_ISDIR(mode)) {
143 inode->i_op = &gfs2_dir_iops;
144 if (gfs2_localflocks(sdp))
145 inode->i_fop = &gfs2_dir_fops_nolock;
147 inode->i_fop = &gfs2_dir_fops;
148 } else if (S_ISLNK(mode)) {
149 inode->i_op = &gfs2_symlink_iops;
151 inode->i_op = &gfs2_file_iops;
152 init_special_inode(inode, inode->i_mode, inode->i_rdev);
155 unlock_new_inode(inode);
159 * gfs2_inode_lookup - Lookup an inode
160 * @sb: The super block
161 * @no_addr: The inode number
162 * @type: The type of the inode
163 * @skip_freeing: set this not return an inode if it is currently being freed.
165 * Returns: A VFS inode, or an error
168 struct inode *gfs2_inode_lookup(struct super_block *sb,
171 u64 no_formal_ino, int skip_freeing)
174 struct gfs2_inode *ip;
175 struct gfs2_glock *io_gl;
179 inode = gfs2_iget_skip(sb, no_addr);
181 inode = gfs2_iget(sb, no_addr);
185 return ERR_PTR(-ENOBUFS);
187 if (inode->i_state & I_NEW) {
188 struct gfs2_sbd *sdp = GFS2_SB(inode);
189 ip->i_no_formal_ino = no_formal_ino;
191 error = gfs2_glock_get(sdp, no_addr, &gfs2_inode_glops, CREATE, &ip->i_gl);
194 ip->i_gl->gl_object = ip;
196 error = gfs2_glock_get(sdp, no_addr, &gfs2_iopen_glops, CREATE, &io_gl);
200 set_bit(GIF_INVALID, &ip->i_flags);
201 error = gfs2_glock_nq_init(io_gl, LM_ST_SHARED, GL_EXACT, &ip->i_iopen_gh);
204 ip->i_iopen_gh.gh_gl->gl_object = ip;
206 gfs2_glock_put(io_gl);
208 if ((type == DT_UNKNOWN) && (no_formal_ino == 0))
211 inode->i_mode = DT2IF(type);
214 * We must read the inode in order to work out its type in
215 * this case. Note that this doesn't happen often as we normally
216 * know the type beforehand. This code path only occurs during
217 * unlinked inode recovery (where it is safe to do this glock,
218 * which is not true in the general case).
220 if (type == DT_UNKNOWN) {
221 struct gfs2_holder gh;
222 error = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, &gh);
225 /* Inode is now uptodate */
226 gfs2_glock_dq_uninit(&gh);
235 gfs2_glock_dq(&ip->i_iopen_gh);
237 gfs2_glock_put(io_gl);
239 ip->i_gl->gl_object = NULL;
240 gfs2_glock_put(ip->i_gl);
243 return ERR_PTR(error);
246 static int gfs2_dinode_in(struct gfs2_inode *ip, const void *buf)
248 const struct gfs2_dinode *str = buf;
249 struct timespec atime;
252 if (unlikely(ip->i_no_addr != be64_to_cpu(str->di_num.no_addr)))
254 ip->i_no_formal_ino = be64_to_cpu(str->di_num.no_formal_ino);
255 ip->i_inode.i_mode = be32_to_cpu(str->di_mode);
256 ip->i_inode.i_rdev = 0;
257 switch (ip->i_inode.i_mode & S_IFMT) {
260 ip->i_inode.i_rdev = MKDEV(be32_to_cpu(str->di_major),
261 be32_to_cpu(str->di_minor));
265 ip->i_inode.i_uid = be32_to_cpu(str->di_uid);
266 ip->i_inode.i_gid = be32_to_cpu(str->di_gid);
268 * We will need to review setting the nlink count here in the
269 * light of the forthcoming ro bind mount work. This is a reminder
272 ip->i_inode.i_nlink = be32_to_cpu(str->di_nlink);
273 ip->i_disksize = be64_to_cpu(str->di_size);
274 i_size_write(&ip->i_inode, ip->i_disksize);
275 gfs2_set_inode_blocks(&ip->i_inode, be64_to_cpu(str->di_blocks));
276 atime.tv_sec = be64_to_cpu(str->di_atime);
277 atime.tv_nsec = be32_to_cpu(str->di_atime_nsec);
278 if (timespec_compare(&ip->i_inode.i_atime, &atime) < 0)
279 ip->i_inode.i_atime = atime;
280 ip->i_inode.i_mtime.tv_sec = be64_to_cpu(str->di_mtime);
281 ip->i_inode.i_mtime.tv_nsec = be32_to_cpu(str->di_mtime_nsec);
282 ip->i_inode.i_ctime.tv_sec = be64_to_cpu(str->di_ctime);
283 ip->i_inode.i_ctime.tv_nsec = be32_to_cpu(str->di_ctime_nsec);
285 ip->i_goal = be64_to_cpu(str->di_goal_meta);
286 ip->i_generation = be64_to_cpu(str->di_generation);
288 ip->i_diskflags = be32_to_cpu(str->di_flags);
289 gfs2_set_inode_flags(&ip->i_inode);
290 height = be16_to_cpu(str->di_height);
291 if (unlikely(height > GFS2_MAX_META_HEIGHT))
293 ip->i_height = (u8)height;
295 depth = be16_to_cpu(str->di_depth);
296 if (unlikely(depth > GFS2_DIR_MAX_DEPTH))
298 ip->i_depth = (u8)depth;
299 ip->i_entries = be32_to_cpu(str->di_entries);
301 ip->i_eattr = be64_to_cpu(str->di_eattr);
302 if (S_ISREG(ip->i_inode.i_mode))
303 gfs2_set_aops(&ip->i_inode);
307 if (gfs2_consist_inode(ip))
308 gfs2_dinode_print(ip);
313 * gfs2_inode_refresh - Refresh the incore copy of the dinode
314 * @ip: The GFS2 inode
319 int gfs2_inode_refresh(struct gfs2_inode *ip)
321 struct buffer_head *dibh;
324 error = gfs2_meta_inode_buffer(ip, &dibh);
328 if (gfs2_metatype_check(GFS2_SB(&ip->i_inode), dibh, GFS2_METATYPE_DI)) {
333 error = gfs2_dinode_in(ip, dibh->b_data);
335 clear_bit(GIF_INVALID, &ip->i_flags);
340 int gfs2_dinode_dealloc(struct gfs2_inode *ip)
342 struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
343 struct gfs2_alloc *al;
344 struct gfs2_rgrpd *rgd;
347 if (gfs2_get_inode_blocks(&ip->i_inode) != 1) {
348 if (gfs2_consist_inode(ip))
349 gfs2_dinode_print(ip);
353 al = gfs2_alloc_get(ip);
357 error = gfs2_quota_hold(ip, NO_QUOTA_CHANGE, NO_QUOTA_CHANGE);
361 error = gfs2_rindex_hold(sdp, &al->al_ri_gh);
365 rgd = gfs2_blk2rgrpd(sdp, ip->i_no_addr);
367 gfs2_consist_inode(ip);
369 goto out_rindex_relse;
372 error = gfs2_glock_nq_init(rgd->rd_gl, LM_ST_EXCLUSIVE, 0,
375 goto out_rindex_relse;
377 error = gfs2_trans_begin(sdp, RES_RG_BIT + RES_STATFS + RES_QUOTA, 1);
381 set_bit(GLF_DIRTY, &ip->i_gl->gl_flags);
382 set_bit(GLF_LFLUSH, &ip->i_gl->gl_flags);
384 gfs2_free_di(rgd, ip);
389 gfs2_glock_dq_uninit(&al->al_rgd_gh);
391 gfs2_glock_dq_uninit(&al->al_ri_gh);
393 gfs2_quota_unhold(ip);
400 * gfs2_change_nlink - Change nlink count on inode
401 * @ip: The GFS2 inode
402 * @diff: The change in the nlink count required
406 int gfs2_change_nlink(struct gfs2_inode *ip, int diff)
408 struct buffer_head *dibh;
412 BUG_ON(diff != 1 && diff != -1);
413 nlink = ip->i_inode.i_nlink + diff;
415 /* If we are reducing the nlink count, but the new value ends up being
416 bigger than the old one, we must have underflowed. */
417 if (diff < 0 && nlink > ip->i_inode.i_nlink) {
418 if (gfs2_consist_inode(ip))
419 gfs2_dinode_print(ip);
423 error = gfs2_meta_inode_buffer(ip, &dibh);
428 inc_nlink(&ip->i_inode);
430 drop_nlink(&ip->i_inode);
432 ip->i_inode.i_ctime = CURRENT_TIME;
434 gfs2_trans_add_bh(ip->i_gl, dibh, 1);
435 gfs2_dinode_out(ip, dibh->b_data);
437 mark_inode_dirty(&ip->i_inode);
439 if (ip->i_inode.i_nlink == 0)
440 gfs2_unlink_di(&ip->i_inode); /* mark inode unlinked */
445 struct inode *gfs2_lookup_simple(struct inode *dip, const char *name)
449 gfs2_str2qstr(&qstr, name);
450 inode = gfs2_lookupi(dip, &qstr, 1);
451 /* gfs2_lookupi has inconsistent callers: vfs
452 * related routines expect NULL for no entry found,
453 * gfs2_lookup_simple callers expect ENOENT
454 * and do not check for NULL.
457 return ERR_PTR(-ENOENT);
464 * gfs2_lookupi - Look up a filename in a directory and return its inode
465 * @d_gh: An initialized holder for the directory glock
466 * @name: The name of the inode to look for
467 * @is_root: If 1, ignore the caller's permissions
468 * @i_gh: An uninitialized holder for the new inode glock
470 * This can be called via the VFS filldir function when NFS is doing
471 * a readdirplus and the inode which its intending to stat isn't
472 * already in cache. In this case we must not take the directory glock
473 * again, since the readdir call will have already taken that lock.
478 struct inode *gfs2_lookupi(struct inode *dir, const struct qstr *name,
481 struct super_block *sb = dir->i_sb;
482 struct gfs2_inode *dip = GFS2_I(dir);
483 struct gfs2_holder d_gh;
485 struct inode *inode = NULL;
488 if (!name->len || name->len > GFS2_FNAMESIZE)
489 return ERR_PTR(-ENAMETOOLONG);
491 if ((name->len == 1 && memcmp(name->name, ".", 1) == 0) ||
492 (name->len == 2 && memcmp(name->name, "..", 2) == 0 &&
493 dir == sb->s_root->d_inode)) {
498 if (gfs2_glock_is_locked_by_me(dip->i_gl) == NULL) {
499 error = gfs2_glock_nq_init(dip->i_gl, LM_ST_SHARED, 0, &d_gh);
501 return ERR_PTR(error);
506 error = gfs2_permission(dir, MAY_EXEC);
511 inode = gfs2_dir_search(dir, name);
513 error = PTR_ERR(inode);
516 gfs2_glock_dq_uninit(&d_gh);
517 if (error == -ENOENT)
519 return inode ? inode : ERR_PTR(error);
522 static void gfs2_inum_range_in(struct gfs2_inum_range_host *ir, const void *buf)
524 const struct gfs2_inum_range *str = buf;
526 ir->ir_start = be64_to_cpu(str->ir_start);
527 ir->ir_length = be64_to_cpu(str->ir_length);
530 static void gfs2_inum_range_out(const struct gfs2_inum_range_host *ir, void *buf)
532 struct gfs2_inum_range *str = buf;
534 str->ir_start = cpu_to_be64(ir->ir_start);
535 str->ir_length = cpu_to_be64(ir->ir_length);
538 static int pick_formal_ino_1(struct gfs2_sbd *sdp, u64 *formal_ino)
540 struct gfs2_inode *ip = GFS2_I(sdp->sd_ir_inode);
541 struct buffer_head *bh;
542 struct gfs2_inum_range_host ir;
545 error = gfs2_trans_begin(sdp, RES_DINODE, 0);
548 mutex_lock(&sdp->sd_inum_mutex);
550 error = gfs2_meta_inode_buffer(ip, &bh);
552 mutex_unlock(&sdp->sd_inum_mutex);
557 gfs2_inum_range_in(&ir, bh->b_data + sizeof(struct gfs2_dinode));
560 *formal_ino = ir.ir_start++;
562 gfs2_trans_add_bh(ip->i_gl, bh, 1);
563 gfs2_inum_range_out(&ir,
564 bh->b_data + sizeof(struct gfs2_dinode));
566 mutex_unlock(&sdp->sd_inum_mutex);
573 mutex_unlock(&sdp->sd_inum_mutex);
579 static int pick_formal_ino_2(struct gfs2_sbd *sdp, u64 *formal_ino)
581 struct gfs2_inode *ip = GFS2_I(sdp->sd_ir_inode);
582 struct gfs2_inode *m_ip = GFS2_I(sdp->sd_inum_inode);
583 struct gfs2_holder gh;
584 struct buffer_head *bh;
585 struct gfs2_inum_range_host ir;
588 error = gfs2_glock_nq_init(m_ip->i_gl, LM_ST_EXCLUSIVE, 0, &gh);
592 error = gfs2_trans_begin(sdp, 2 * RES_DINODE, 0);
595 mutex_lock(&sdp->sd_inum_mutex);
597 error = gfs2_meta_inode_buffer(ip, &bh);
601 gfs2_inum_range_in(&ir, bh->b_data + sizeof(struct gfs2_dinode));
604 struct buffer_head *m_bh;
608 error = gfs2_meta_inode_buffer(m_ip, &m_bh);
612 z = *(__be64 *)(m_bh->b_data + sizeof(struct gfs2_dinode));
613 x = y = be64_to_cpu(z);
615 ir.ir_length = GFS2_INUM_QUANTUM;
616 x += GFS2_INUM_QUANTUM;
618 gfs2_consist_inode(m_ip);
620 gfs2_trans_add_bh(m_ip->i_gl, m_bh, 1);
621 *(__be64 *)(m_bh->b_data + sizeof(struct gfs2_dinode)) = z;
626 *formal_ino = ir.ir_start++;
629 gfs2_trans_add_bh(ip->i_gl, bh, 1);
630 gfs2_inum_range_out(&ir, bh->b_data + sizeof(struct gfs2_dinode));
635 mutex_unlock(&sdp->sd_inum_mutex);
638 gfs2_glock_dq_uninit(&gh);
642 static int pick_formal_ino(struct gfs2_sbd *sdp, u64 *inum)
646 error = pick_formal_ino_1(sdp, inum);
650 error = pick_formal_ino_2(sdp, inum);
656 * create_ok - OK to create a new on-disk inode here?
657 * @dip: Directory in which dinode is to be created
658 * @name: Name of new dinode
664 static int create_ok(struct gfs2_inode *dip, const struct qstr *name,
669 error = gfs2_permission(&dip->i_inode, MAY_WRITE | MAY_EXEC);
673 /* Don't create entries in an unlinked directory */
674 if (!dip->i_inode.i_nlink)
677 error = gfs2_dir_check(&dip->i_inode, name, NULL);
688 if (dip->i_entries == (u32)-1)
690 if (S_ISDIR(mode) && dip->i_inode.i_nlink == (u32)-1)
696 static void munge_mode_uid_gid(struct gfs2_inode *dip, unsigned int *mode,
697 unsigned int *uid, unsigned int *gid)
699 if (GFS2_SB(&dip->i_inode)->sd_args.ar_suiddir &&
700 (dip->i_inode.i_mode & S_ISUID) && dip->i_inode.i_uid) {
703 else if (dip->i_inode.i_uid != current_fsuid())
705 *uid = dip->i_inode.i_uid;
707 *uid = current_fsuid();
709 if (dip->i_inode.i_mode & S_ISGID) {
712 *gid = dip->i_inode.i_gid;
714 *gid = current_fsgid();
717 static int alloc_dinode(struct gfs2_inode *dip, u64 *no_addr, u64 *generation)
719 struct gfs2_sbd *sdp = GFS2_SB(&dip->i_inode);
722 if (gfs2_alloc_get(dip) == NULL)
725 dip->i_alloc->al_requested = RES_DINODE;
726 error = gfs2_inplace_reserve(dip);
730 error = gfs2_trans_begin(sdp, RES_RG_BIT + RES_STATFS, 0);
734 *no_addr = gfs2_alloc_di(dip, generation);
739 gfs2_inplace_release(dip);
746 * init_dinode - Fill in a new dinode structure
747 * @dip: the directory this inode is being created in
748 * @gl: The glock covering the new inode
749 * @inum: the inode number
750 * @mode: the file permissions
756 static void init_dinode(struct gfs2_inode *dip, struct gfs2_glock *gl,
757 const struct gfs2_inum_host *inum, unsigned int mode,
758 unsigned int uid, unsigned int gid,
759 const u64 *generation, dev_t dev, struct buffer_head **bhp)
761 struct gfs2_sbd *sdp = GFS2_SB(&dip->i_inode);
762 struct gfs2_dinode *di;
763 struct buffer_head *dibh;
764 struct timespec tv = CURRENT_TIME;
766 dibh = gfs2_meta_new(gl, inum->no_addr);
767 gfs2_trans_add_bh(gl, dibh, 1);
768 gfs2_metatype_set(dibh, GFS2_METATYPE_DI, GFS2_FORMAT_DI);
769 gfs2_buffer_clear_tail(dibh, sizeof(struct gfs2_dinode));
770 di = (struct gfs2_dinode *)dibh->b_data;
772 di->di_num.no_formal_ino = cpu_to_be64(inum->no_formal_ino);
773 di->di_num.no_addr = cpu_to_be64(inum->no_addr);
774 di->di_mode = cpu_to_be32(mode);
775 di->di_uid = cpu_to_be32(uid);
776 di->di_gid = cpu_to_be32(gid);
779 di->di_blocks = cpu_to_be64(1);
780 di->di_atime = di->di_mtime = di->di_ctime = cpu_to_be64(tv.tv_sec);
781 di->di_major = cpu_to_be32(MAJOR(dev));
782 di->di_minor = cpu_to_be32(MINOR(dev));
783 di->di_goal_meta = di->di_goal_data = cpu_to_be64(inum->no_addr);
784 di->di_generation = cpu_to_be64(*generation);
788 if ((dip->i_diskflags & GFS2_DIF_INHERIT_JDATA) ||
789 gfs2_tune_get(sdp, gt_new_files_jdata))
790 di->di_flags |= cpu_to_be32(GFS2_DIF_JDATA);
791 } else if (S_ISDIR(mode)) {
792 di->di_flags |= cpu_to_be32(dip->i_diskflags &
793 GFS2_DIF_INHERIT_JDATA);
797 di->di_payload_format = cpu_to_be32(S_ISDIR(mode) ? GFS2_FORMAT_DE : 0);
803 memset(&di->__pad4, 0, sizeof(di->__pad4));
805 di->di_atime_nsec = cpu_to_be32(tv.tv_nsec);
806 di->di_mtime_nsec = cpu_to_be32(tv.tv_nsec);
807 di->di_ctime_nsec = cpu_to_be32(tv.tv_nsec);
808 memset(&di->di_reserved, 0, sizeof(di->di_reserved));
810 set_buffer_uptodate(dibh);
815 static int make_dinode(struct gfs2_inode *dip, struct gfs2_glock *gl,
816 unsigned int mode, const struct gfs2_inum_host *inum,
817 const u64 *generation, dev_t dev, struct buffer_head **bhp)
819 struct gfs2_sbd *sdp = GFS2_SB(&dip->i_inode);
820 unsigned int uid, gid;
823 munge_mode_uid_gid(dip, &mode, &uid, &gid);
824 if (!gfs2_alloc_get(dip))
827 error = gfs2_quota_lock(dip, uid, gid);
831 error = gfs2_quota_check(dip, uid, gid);
835 error = gfs2_trans_begin(sdp, RES_DINODE + RES_QUOTA, 0);
839 init_dinode(dip, gl, inum, mode, uid, gid, generation, dev, bhp);
840 gfs2_quota_change(dip, +1, uid, gid);
844 gfs2_quota_unlock(dip);
850 static int link_dinode(struct gfs2_inode *dip, const struct qstr *name,
851 struct gfs2_inode *ip)
853 struct gfs2_sbd *sdp = GFS2_SB(&dip->i_inode);
854 struct gfs2_alloc *al;
856 struct buffer_head *dibh;
859 al = gfs2_alloc_get(dip);
863 error = gfs2_quota_lock(dip, NO_QUOTA_CHANGE, NO_QUOTA_CHANGE);
867 error = alloc_required = gfs2_diradd_alloc_required(&dip->i_inode, name);
868 if (alloc_required < 0)
869 goto fail_quota_locks;
870 if (alloc_required) {
871 error = gfs2_quota_check(dip, dip->i_inode.i_uid, dip->i_inode.i_gid);
873 goto fail_quota_locks;
875 al->al_requested = sdp->sd_max_dirres;
877 error = gfs2_inplace_reserve(dip);
879 goto fail_quota_locks;
881 error = gfs2_trans_begin(sdp, sdp->sd_max_dirres +
882 al->al_rgd->rd_length +
884 RES_STATFS + RES_QUOTA, 0);
888 error = gfs2_trans_begin(sdp, RES_LEAF + 2 * RES_DINODE, 0);
890 goto fail_quota_locks;
893 error = gfs2_dir_add(&dip->i_inode, name, ip, IF2DT(ip->i_inode.i_mode));
897 error = gfs2_meta_inode_buffer(ip, &dibh);
900 ip->i_inode.i_nlink = 1;
901 gfs2_trans_add_bh(ip->i_gl, dibh, 1);
902 gfs2_dinode_out(ip, dibh->b_data);
910 if (dip->i_alloc->al_rgd)
911 gfs2_inplace_release(dip);
914 gfs2_quota_unlock(dip);
921 static int gfs2_security_init(struct gfs2_inode *dip, struct gfs2_inode *ip)
927 struct gfs2_ea_request er;
929 err = security_inode_init_security(&ip->i_inode, &dip->i_inode,
930 &name, &value, &len);
933 if (err == -EOPNOTSUPP)
938 memset(&er, 0, sizeof(struct gfs2_ea_request));
940 er.er_type = GFS2_EATYPE_SECURITY;
943 er.er_name_len = strlen(name);
944 er.er_data_len = len;
946 err = gfs2_ea_set_i(ip, &er);
955 * gfs2_createi - Create a new inode
956 * @ghs: An array of two holders
957 * @name: The name of the new file
958 * @mode: the permissions on the new inode
960 * @ghs[0] is an initialized holder for the directory
961 * @ghs[1] is the holder for the inode lock
963 * If the return value is not NULL, the glocks on both the directory and the new
964 * file are held. A transaction has been started and an inplace reservation
970 struct inode *gfs2_createi(struct gfs2_holder *ghs, const struct qstr *name,
971 unsigned int mode, dev_t dev)
973 struct inode *inode = NULL;
974 struct gfs2_inode *dip = ghs->gh_gl->gl_object;
975 struct inode *dir = &dip->i_inode;
976 struct gfs2_sbd *sdp = GFS2_SB(&dip->i_inode);
977 struct gfs2_inum_host inum = { .no_addr = 0, .no_formal_ino = 0 };
980 struct buffer_head *bh = NULL;
982 if (!name->len || name->len > GFS2_FNAMESIZE)
983 return ERR_PTR(-ENAMETOOLONG);
985 gfs2_holder_reinit(LM_ST_EXCLUSIVE, 0, ghs);
986 error = gfs2_glock_nq(ghs);
990 error = create_ok(dip, name, mode);
994 error = pick_formal_ino(sdp, &inum.no_formal_ino);
998 error = alloc_dinode(dip, &inum.no_addr, &generation);
1002 error = gfs2_glock_nq_num(sdp, inum.no_addr, &gfs2_inode_glops,
1003 LM_ST_EXCLUSIVE, GL_SKIP, ghs + 1);
1007 error = make_dinode(dip, ghs[1].gh_gl, mode, &inum, &generation, dev, &bh);
1011 inode = gfs2_inode_lookup(dir->i_sb, IF2DT(mode),
1013 inum.no_formal_ino, 0);
1017 error = gfs2_inode_refresh(GFS2_I(inode));
1021 error = gfs2_acl_create(dip, GFS2_I(inode));
1025 error = gfs2_security_init(dip, GFS2_I(inode));
1029 error = link_dinode(dip, name, GFS2_I(inode));
1038 gfs2_glock_dq_uninit(ghs + 1);
1039 if (inode && !IS_ERR(inode))
1046 return ERR_PTR(error);
1049 static int __gfs2_setattr_simple(struct gfs2_inode *ip, struct iattr *attr)
1051 struct buffer_head *dibh;
1054 error = gfs2_meta_inode_buffer(ip, &dibh);
1056 error = inode_setattr(&ip->i_inode, attr);
1057 gfs2_assert_warn(GFS2_SB(&ip->i_inode), !error);
1058 gfs2_trans_add_bh(ip->i_gl, dibh, 1);
1059 gfs2_dinode_out(ip, dibh->b_data);
1066 * gfs2_setattr_simple -
1070 * Called with a reference on the vnode.
1075 int gfs2_setattr_simple(struct gfs2_inode *ip, struct iattr *attr)
1079 if (current->journal_info)
1080 return __gfs2_setattr_simple(ip, attr);
1082 error = gfs2_trans_begin(GFS2_SB(&ip->i_inode), RES_DINODE, 0);
1086 error = __gfs2_setattr_simple(ip, attr);
1087 gfs2_trans_end(GFS2_SB(&ip->i_inode));
1091 void gfs2_dinode_out(const struct gfs2_inode *ip, void *buf)
1093 struct gfs2_dinode *str = buf;
1095 str->di_header.mh_magic = cpu_to_be32(GFS2_MAGIC);
1096 str->di_header.mh_type = cpu_to_be32(GFS2_METATYPE_DI);
1097 str->di_header.__pad0 = 0;
1098 str->di_header.mh_format = cpu_to_be32(GFS2_FORMAT_DI);
1099 str->di_header.__pad1 = 0;
1100 str->di_num.no_addr = cpu_to_be64(ip->i_no_addr);
1101 str->di_num.no_formal_ino = cpu_to_be64(ip->i_no_formal_ino);
1102 str->di_mode = cpu_to_be32(ip->i_inode.i_mode);
1103 str->di_uid = cpu_to_be32(ip->i_inode.i_uid);
1104 str->di_gid = cpu_to_be32(ip->i_inode.i_gid);
1105 str->di_nlink = cpu_to_be32(ip->i_inode.i_nlink);
1106 str->di_size = cpu_to_be64(ip->i_disksize);
1107 str->di_blocks = cpu_to_be64(gfs2_get_inode_blocks(&ip->i_inode));
1108 str->di_atime = cpu_to_be64(ip->i_inode.i_atime.tv_sec);
1109 str->di_mtime = cpu_to_be64(ip->i_inode.i_mtime.tv_sec);
1110 str->di_ctime = cpu_to_be64(ip->i_inode.i_ctime.tv_sec);
1112 str->di_goal_meta = cpu_to_be64(ip->i_goal);
1113 str->di_goal_data = cpu_to_be64(ip->i_goal);
1114 str->di_generation = cpu_to_be64(ip->i_generation);
1116 str->di_flags = cpu_to_be32(ip->i_diskflags);
1117 str->di_height = cpu_to_be16(ip->i_height);
1118 str->di_payload_format = cpu_to_be32(S_ISDIR(ip->i_inode.i_mode) &&
1119 !(ip->i_diskflags & GFS2_DIF_EXHASH) ?
1120 GFS2_FORMAT_DE : 0);
1121 str->di_depth = cpu_to_be16(ip->i_depth);
1122 str->di_entries = cpu_to_be32(ip->i_entries);
1124 str->di_eattr = cpu_to_be64(ip->i_eattr);
1125 str->di_atime_nsec = cpu_to_be32(ip->i_inode.i_atime.tv_nsec);
1126 str->di_mtime_nsec = cpu_to_be32(ip->i_inode.i_mtime.tv_nsec);
1127 str->di_ctime_nsec = cpu_to_be32(ip->i_inode.i_ctime.tv_nsec);
1130 void gfs2_dinode_print(const struct gfs2_inode *ip)
1132 printk(KERN_INFO " no_formal_ino = %llu\n",
1133 (unsigned long long)ip->i_no_formal_ino);
1134 printk(KERN_INFO " no_addr = %llu\n",
1135 (unsigned long long)ip->i_no_addr);
1136 printk(KERN_INFO " i_disksize = %llu\n",
1137 (unsigned long long)ip->i_disksize);
1138 printk(KERN_INFO " blocks = %llu\n",
1139 (unsigned long long)gfs2_get_inode_blocks(&ip->i_inode));
1140 printk(KERN_INFO " i_goal = %llu\n",
1141 (unsigned long long)ip->i_goal);
1142 printk(KERN_INFO " i_diskflags = 0x%.8X\n", ip->i_diskflags);
1143 printk(KERN_INFO " i_height = %u\n", ip->i_height);
1144 printk(KERN_INFO " i_depth = %u\n", ip->i_depth);
1145 printk(KERN_INFO " i_entries = %u\n", ip->i_entries);
1146 printk(KERN_INFO " i_eattr = %llu\n",
1147 (unsigned long long)ip->i_eattr);