2 * JFFS2 -- Journalling Flash File System, Version 2.
4 * Copyright (C) 2001-2003 Red Hat, Inc.
6 * Created by David Woodhouse <dwmw2@infradead.org>
8 * For licensing information, see the file 'LICENCE' in this directory.
10 * $Id: dir.c,v 1.90 2005/11/07 11:14:39 gleixner Exp $
14 #include <linux/kernel.h>
15 #include <linux/slab.h>
16 #include <linux/sched.h>
18 #include <linux/crc32.h>
19 #include <linux/jffs2.h>
20 #include <linux/jffs2_fs_i.h>
21 #include <linux/jffs2_fs_sb.h>
22 #include <linux/time.h>
25 static int jffs2_readdir (struct file *, void *, filldir_t);
27 static int jffs2_create (struct inode *,struct dentry *,int,
29 static struct dentry *jffs2_lookup (struct inode *,struct dentry *,
31 static int jffs2_link (struct dentry *,struct inode *,struct dentry *);
32 static int jffs2_unlink (struct inode *,struct dentry *);
33 static int jffs2_symlink (struct inode *,struct dentry *,const char *);
34 static int jffs2_mkdir (struct inode *,struct dentry *,int);
35 static int jffs2_rmdir (struct inode *,struct dentry *);
36 static int jffs2_mknod (struct inode *,struct dentry *,int,dev_t);
37 static int jffs2_rename (struct inode *, struct dentry *,
38 struct inode *, struct dentry *);
40 struct file_operations jffs2_dir_operations =
42 .read = generic_read_dir,
43 .readdir = jffs2_readdir,
49 struct inode_operations jffs2_dir_inode_operations =
51 .create = jffs2_create,
52 .lookup = jffs2_lookup,
54 .unlink = jffs2_unlink,
55 .symlink = jffs2_symlink,
59 .rename = jffs2_rename,
60 .setattr = jffs2_setattr,
63 /***********************************************************************/
66 /* We keep the dirent list sorted in increasing order of name hash,
67 and we use the same hash function as the dentries. Makes this
70 static struct dentry *jffs2_lookup(struct inode *dir_i, struct dentry *target,
73 struct jffs2_inode_info *dir_f;
74 struct jffs2_sb_info *c;
75 struct jffs2_full_dirent *fd = NULL, *fd_list;
77 struct inode *inode = NULL;
79 D1(printk(KERN_DEBUG "jffs2_lookup()\n"));
81 dir_f = JFFS2_INODE_INFO(dir_i);
82 c = JFFS2_SB_INFO(dir_i->i_sb);
86 /* NB: The 2.2 backport will need to explicitly check for '.' and '..' here */
87 for (fd_list = dir_f->dents; fd_list && fd_list->nhash <= target->d_name.hash; fd_list = fd_list->next) {
88 if (fd_list->nhash == target->d_name.hash &&
89 (!fd || fd_list->version > fd->version) &&
90 strlen(fd_list->name) == target->d_name.len &&
91 !strncmp(fd_list->name, target->d_name.name, target->d_name.len)) {
99 inode = iget(dir_i->i_sb, ino);
101 printk(KERN_WARNING "iget() failed for ino #%u\n", ino);
102 return (ERR_PTR(-EIO));
106 d_add(target, inode);
111 /***********************************************************************/
114 static int jffs2_readdir(struct file *filp, void *dirent, filldir_t filldir)
116 struct jffs2_inode_info *f;
117 struct jffs2_sb_info *c;
118 struct inode *inode = filp->f_dentry->d_inode;
119 struct jffs2_full_dirent *fd;
120 unsigned long offset, curofs;
122 D1(printk(KERN_DEBUG "jffs2_readdir() for dir_i #%lu\n", filp->f_dentry->d_inode->i_ino));
124 f = JFFS2_INODE_INFO(inode);
125 c = JFFS2_SB_INFO(inode->i_sb);
127 offset = filp->f_pos;
130 D1(printk(KERN_DEBUG "Dirent 0: \".\", ino #%lu\n", inode->i_ino));
131 if (filldir(dirent, ".", 1, 0, inode->i_ino, DT_DIR) < 0)
136 unsigned long pino = parent_ino(filp->f_dentry);
137 D1(printk(KERN_DEBUG "Dirent 1: \"..\", ino #%lu\n", pino));
138 if (filldir(dirent, "..", 2, 1, pino, DT_DIR) < 0)
145 for (fd = f->dents; fd; fd = fd->next) {
148 /* First loop: curofs = 2; offset = 2 */
149 if (curofs < offset) {
150 D2(printk(KERN_DEBUG "Skipping dirent: \"%s\", ino #%u, type %d, because curofs %ld < offset %ld\n",
151 fd->name, fd->ino, fd->type, curofs, offset));
155 D2(printk(KERN_DEBUG "Skipping deletion dirent \"%s\"\n", fd->name));
159 D2(printk(KERN_DEBUG "Dirent %ld: \"%s\", ino #%u, type %d\n", offset, fd->name, fd->ino, fd->type));
160 if (filldir(dirent, fd->name, strlen(fd->name), offset, fd->ino, fd->type) < 0)
166 filp->f_pos = offset;
170 /***********************************************************************/
173 static int jffs2_create(struct inode *dir_i, struct dentry *dentry, int mode,
174 struct nameidata *nd)
176 struct jffs2_raw_inode *ri;
177 struct jffs2_inode_info *f, *dir_f;
178 struct jffs2_sb_info *c;
182 ri = jffs2_alloc_raw_inode();
186 c = JFFS2_SB_INFO(dir_i->i_sb);
188 D1(printk(KERN_DEBUG "jffs2_create()\n"));
190 inode = jffs2_new_inode(dir_i, mode, ri);
193 D1(printk(KERN_DEBUG "jffs2_new_inode() failed\n"));
194 jffs2_free_raw_inode(ri);
195 return PTR_ERR(inode);
198 inode->i_op = &jffs2_file_inode_operations;
199 inode->i_fop = &jffs2_file_operations;
200 inode->i_mapping->a_ops = &jffs2_file_address_operations;
201 inode->i_mapping->nrpages = 0;
203 f = JFFS2_INODE_INFO(inode);
204 dir_f = JFFS2_INODE_INFO(dir_i);
206 ret = jffs2_do_create(c, dir_f, f, ri,
207 dentry->d_name.name, dentry->d_name.len);
210 make_bad_inode(inode);
212 jffs2_free_raw_inode(ri);
216 dir_i->i_mtime = dir_i->i_ctime = ITIME(je32_to_cpu(ri->ctime));
218 jffs2_free_raw_inode(ri);
219 d_instantiate(dentry, inode);
221 D1(printk(KERN_DEBUG "jffs2_create: Created ino #%lu with mode %o, nlink %d(%d). nrpages %ld\n",
222 inode->i_ino, inode->i_mode, inode->i_nlink, f->inocache->nlink, inode->i_mapping->nrpages));
226 /***********************************************************************/
229 static int jffs2_unlink(struct inode *dir_i, struct dentry *dentry)
231 struct jffs2_sb_info *c = JFFS2_SB_INFO(dir_i->i_sb);
232 struct jffs2_inode_info *dir_f = JFFS2_INODE_INFO(dir_i);
233 struct jffs2_inode_info *dead_f = JFFS2_INODE_INFO(dentry->d_inode);
235 uint32_t now = get_seconds();
237 ret = jffs2_do_unlink(c, dir_f, dentry->d_name.name,
238 dentry->d_name.len, dead_f, now);
239 if (dead_f->inocache)
240 dentry->d_inode->i_nlink = dead_f->inocache->nlink;
242 dir_i->i_mtime = dir_i->i_ctime = ITIME(now);
245 /***********************************************************************/
248 static int jffs2_link (struct dentry *old_dentry, struct inode *dir_i, struct dentry *dentry)
250 struct jffs2_sb_info *c = JFFS2_SB_INFO(old_dentry->d_inode->i_sb);
251 struct jffs2_inode_info *f = JFFS2_INODE_INFO(old_dentry->d_inode);
252 struct jffs2_inode_info *dir_f = JFFS2_INODE_INFO(dir_i);
257 /* Don't let people make hard links to bad inodes. */
261 if (S_ISDIR(old_dentry->d_inode->i_mode))
264 /* XXX: This is ugly */
265 type = (old_dentry->d_inode->i_mode & S_IFMT) >> 12;
266 if (!type) type = DT_REG;
269 ret = jffs2_do_link(c, dir_f, f->inocache->ino, type, dentry->d_name.name, dentry->d_name.len, now);
273 old_dentry->d_inode->i_nlink = ++f->inocache->nlink;
275 d_instantiate(dentry, old_dentry->d_inode);
276 dir_i->i_mtime = dir_i->i_ctime = ITIME(now);
277 atomic_inc(&old_dentry->d_inode->i_count);
282 /***********************************************************************/
284 static int jffs2_symlink (struct inode *dir_i, struct dentry *dentry, const char *target)
286 struct jffs2_inode_info *f, *dir_f;
287 struct jffs2_sb_info *c;
289 struct jffs2_raw_inode *ri;
290 struct jffs2_raw_dirent *rd;
291 struct jffs2_full_dnode *fn;
292 struct jffs2_full_dirent *fd;
294 uint32_t alloclen, phys_ofs;
295 int ret, targetlen = strlen(target);
297 /* FIXME: If you care. We'd need to use frags for the target
298 if it grows much more than this */
302 ri = jffs2_alloc_raw_inode();
307 c = JFFS2_SB_INFO(dir_i->i_sb);
309 /* Try to reserve enough space for both node and dirent.
310 * Just the node will do for now, though
312 namelen = dentry->d_name.len;
313 ret = jffs2_reserve_space(c, sizeof(*ri) + targetlen, &phys_ofs, &alloclen,
314 ALLOC_NORMAL, JFFS2_SUMMARY_INODE_SIZE);
317 jffs2_free_raw_inode(ri);
321 inode = jffs2_new_inode(dir_i, S_IFLNK | S_IRWXUGO, ri);
324 jffs2_free_raw_inode(ri);
325 jffs2_complete_reservation(c);
326 return PTR_ERR(inode);
329 inode->i_op = &jffs2_symlink_inode_operations;
331 f = JFFS2_INODE_INFO(inode);
333 inode->i_size = targetlen;
334 ri->isize = ri->dsize = ri->csize = cpu_to_je32(inode->i_size);
335 ri->totlen = cpu_to_je32(sizeof(*ri) + inode->i_size);
336 ri->hdr_crc = cpu_to_je32(crc32(0, ri, sizeof(struct jffs2_unknown_node)-4));
338 ri->compr = JFFS2_COMPR_NONE;
339 ri->data_crc = cpu_to_je32(crc32(0, target, targetlen));
340 ri->node_crc = cpu_to_je32(crc32(0, ri, sizeof(*ri)-8));
342 fn = jffs2_write_dnode(c, f, ri, target, targetlen, phys_ofs, ALLOC_NORMAL);
344 jffs2_free_raw_inode(ri);
347 /* Eeek. Wave bye bye */
349 jffs2_complete_reservation(c);
350 jffs2_clear_inode(inode);
354 /* We use f->target field to store the target path. */
355 f->target = kmalloc(targetlen + 1, GFP_KERNEL);
357 printk(KERN_WARNING "Can't allocate %d bytes of memory\n", targetlen + 1);
359 jffs2_complete_reservation(c);
360 jffs2_clear_inode(inode);
364 memcpy(f->target, target, targetlen + 1);
365 D1(printk(KERN_DEBUG "jffs2_symlink: symlink's target '%s' cached\n", (char *)f->target));
367 /* No data here. Only a metadata node, which will be
368 obsoleted by the first data write
373 jffs2_complete_reservation(c);
374 ret = jffs2_reserve_space(c, sizeof(*rd)+namelen, &phys_ofs, &alloclen,
375 ALLOC_NORMAL, JFFS2_SUMMARY_DIRENT_SIZE(namelen));
378 jffs2_clear_inode(inode);
382 rd = jffs2_alloc_raw_dirent();
384 /* Argh. Now we treat it like a normal delete */
385 jffs2_complete_reservation(c);
386 jffs2_clear_inode(inode);
390 dir_f = JFFS2_INODE_INFO(dir_i);
393 rd->magic = cpu_to_je16(JFFS2_MAGIC_BITMASK);
394 rd->nodetype = cpu_to_je16(JFFS2_NODETYPE_DIRENT);
395 rd->totlen = cpu_to_je32(sizeof(*rd) + namelen);
396 rd->hdr_crc = cpu_to_je32(crc32(0, rd, sizeof(struct jffs2_unknown_node)-4));
398 rd->pino = cpu_to_je32(dir_i->i_ino);
399 rd->version = cpu_to_je32(++dir_f->highest_version);
400 rd->ino = cpu_to_je32(inode->i_ino);
401 rd->mctime = cpu_to_je32(get_seconds());
404 rd->node_crc = cpu_to_je32(crc32(0, rd, sizeof(*rd)-8));
405 rd->name_crc = cpu_to_je32(crc32(0, dentry->d_name.name, namelen));
407 fd = jffs2_write_dirent(c, dir_f, rd, dentry->d_name.name, namelen, phys_ofs, ALLOC_NORMAL);
410 /* dirent failed to write. Delete the inode normally
411 as if it were the final unlink() */
412 jffs2_complete_reservation(c);
413 jffs2_free_raw_dirent(rd);
415 jffs2_clear_inode(inode);
419 dir_i->i_mtime = dir_i->i_ctime = ITIME(je32_to_cpu(rd->mctime));
421 jffs2_free_raw_dirent(rd);
423 /* Link the fd into the inode's list, obsoleting an old
425 jffs2_add_fd_to_list(c, fd, &dir_f->dents);
428 jffs2_complete_reservation(c);
430 d_instantiate(dentry, inode);
435 static int jffs2_mkdir (struct inode *dir_i, struct dentry *dentry, int mode)
437 struct jffs2_inode_info *f, *dir_f;
438 struct jffs2_sb_info *c;
440 struct jffs2_raw_inode *ri;
441 struct jffs2_raw_dirent *rd;
442 struct jffs2_full_dnode *fn;
443 struct jffs2_full_dirent *fd;
445 uint32_t alloclen, phys_ofs;
450 ri = jffs2_alloc_raw_inode();
454 c = JFFS2_SB_INFO(dir_i->i_sb);
456 /* Try to reserve enough space for both node and dirent.
457 * Just the node will do for now, though
459 namelen = dentry->d_name.len;
460 ret = jffs2_reserve_space(c, sizeof(*ri), &phys_ofs, &alloclen, ALLOC_NORMAL,
461 JFFS2_SUMMARY_INODE_SIZE);
464 jffs2_free_raw_inode(ri);
468 inode = jffs2_new_inode(dir_i, mode, ri);
471 jffs2_free_raw_inode(ri);
472 jffs2_complete_reservation(c);
473 return PTR_ERR(inode);
476 inode->i_op = &jffs2_dir_inode_operations;
477 inode->i_fop = &jffs2_dir_operations;
478 /* Directories get nlink 2 at start */
481 f = JFFS2_INODE_INFO(inode);
483 ri->data_crc = cpu_to_je32(0);
484 ri->node_crc = cpu_to_je32(crc32(0, ri, sizeof(*ri)-8));
486 fn = jffs2_write_dnode(c, f, ri, NULL, 0, phys_ofs, ALLOC_NORMAL);
488 jffs2_free_raw_inode(ri);
491 /* Eeek. Wave bye bye */
493 jffs2_complete_reservation(c);
494 jffs2_clear_inode(inode);
497 /* No data here. Only a metadata node, which will be
498 obsoleted by the first data write
503 jffs2_complete_reservation(c);
504 ret = jffs2_reserve_space(c, sizeof(*rd)+namelen, &phys_ofs, &alloclen,
505 ALLOC_NORMAL, JFFS2_SUMMARY_DIRENT_SIZE(namelen));
508 jffs2_clear_inode(inode);
512 rd = jffs2_alloc_raw_dirent();
514 /* Argh. Now we treat it like a normal delete */
515 jffs2_complete_reservation(c);
516 jffs2_clear_inode(inode);
520 dir_f = JFFS2_INODE_INFO(dir_i);
523 rd->magic = cpu_to_je16(JFFS2_MAGIC_BITMASK);
524 rd->nodetype = cpu_to_je16(JFFS2_NODETYPE_DIRENT);
525 rd->totlen = cpu_to_je32(sizeof(*rd) + namelen);
526 rd->hdr_crc = cpu_to_je32(crc32(0, rd, sizeof(struct jffs2_unknown_node)-4));
528 rd->pino = cpu_to_je32(dir_i->i_ino);
529 rd->version = cpu_to_je32(++dir_f->highest_version);
530 rd->ino = cpu_to_je32(inode->i_ino);
531 rd->mctime = cpu_to_je32(get_seconds());
534 rd->node_crc = cpu_to_je32(crc32(0, rd, sizeof(*rd)-8));
535 rd->name_crc = cpu_to_je32(crc32(0, dentry->d_name.name, namelen));
537 fd = jffs2_write_dirent(c, dir_f, rd, dentry->d_name.name, namelen, phys_ofs, ALLOC_NORMAL);
540 /* dirent failed to write. Delete the inode normally
541 as if it were the final unlink() */
542 jffs2_complete_reservation(c);
543 jffs2_free_raw_dirent(rd);
545 jffs2_clear_inode(inode);
549 dir_i->i_mtime = dir_i->i_ctime = ITIME(je32_to_cpu(rd->mctime));
552 jffs2_free_raw_dirent(rd);
554 /* Link the fd into the inode's list, obsoleting an old
556 jffs2_add_fd_to_list(c, fd, &dir_f->dents);
559 jffs2_complete_reservation(c);
561 d_instantiate(dentry, inode);
565 static int jffs2_rmdir (struct inode *dir_i, struct dentry *dentry)
567 struct jffs2_inode_info *f = JFFS2_INODE_INFO(dentry->d_inode);
568 struct jffs2_full_dirent *fd;
571 for (fd = f->dents ; fd; fd = fd->next) {
575 ret = jffs2_unlink(dir_i, dentry);
581 static int jffs2_mknod (struct inode *dir_i, struct dentry *dentry, int mode, dev_t rdev)
583 struct jffs2_inode_info *f, *dir_f;
584 struct jffs2_sb_info *c;
586 struct jffs2_raw_inode *ri;
587 struct jffs2_raw_dirent *rd;
588 struct jffs2_full_dnode *fn;
589 struct jffs2_full_dirent *fd;
593 uint32_t alloclen, phys_ofs;
596 if (!old_valid_dev(rdev))
599 ri = jffs2_alloc_raw_inode();
603 c = JFFS2_SB_INFO(dir_i->i_sb);
605 if (S_ISBLK(mode) || S_ISCHR(mode)) {
606 dev = cpu_to_je16(old_encode_dev(rdev));
607 devlen = sizeof(dev);
610 /* Try to reserve enough space for both node and dirent.
611 * Just the node will do for now, though
613 namelen = dentry->d_name.len;
614 ret = jffs2_reserve_space(c, sizeof(*ri) + devlen, &phys_ofs, &alloclen,
615 ALLOC_NORMAL, JFFS2_SUMMARY_INODE_SIZE);
618 jffs2_free_raw_inode(ri);
622 inode = jffs2_new_inode(dir_i, mode, ri);
625 jffs2_free_raw_inode(ri);
626 jffs2_complete_reservation(c);
627 return PTR_ERR(inode);
629 inode->i_op = &jffs2_file_inode_operations;
630 init_special_inode(inode, inode->i_mode, rdev);
632 f = JFFS2_INODE_INFO(inode);
634 ri->dsize = ri->csize = cpu_to_je32(devlen);
635 ri->totlen = cpu_to_je32(sizeof(*ri) + devlen);
636 ri->hdr_crc = cpu_to_je32(crc32(0, ri, sizeof(struct jffs2_unknown_node)-4));
638 ri->compr = JFFS2_COMPR_NONE;
639 ri->data_crc = cpu_to_je32(crc32(0, &dev, devlen));
640 ri->node_crc = cpu_to_je32(crc32(0, ri, sizeof(*ri)-8));
642 fn = jffs2_write_dnode(c, f, ri, (char *)&dev, devlen, phys_ofs, ALLOC_NORMAL);
644 jffs2_free_raw_inode(ri);
647 /* Eeek. Wave bye bye */
649 jffs2_complete_reservation(c);
650 jffs2_clear_inode(inode);
653 /* No data here. Only a metadata node, which will be
654 obsoleted by the first data write
659 jffs2_complete_reservation(c);
660 ret = jffs2_reserve_space(c, sizeof(*rd)+namelen, &phys_ofs, &alloclen,
661 ALLOC_NORMAL, JFFS2_SUMMARY_DIRENT_SIZE(namelen));
664 jffs2_clear_inode(inode);
668 rd = jffs2_alloc_raw_dirent();
670 /* Argh. Now we treat it like a normal delete */
671 jffs2_complete_reservation(c);
672 jffs2_clear_inode(inode);
676 dir_f = JFFS2_INODE_INFO(dir_i);
679 rd->magic = cpu_to_je16(JFFS2_MAGIC_BITMASK);
680 rd->nodetype = cpu_to_je16(JFFS2_NODETYPE_DIRENT);
681 rd->totlen = cpu_to_je32(sizeof(*rd) + namelen);
682 rd->hdr_crc = cpu_to_je32(crc32(0, rd, sizeof(struct jffs2_unknown_node)-4));
684 rd->pino = cpu_to_je32(dir_i->i_ino);
685 rd->version = cpu_to_je32(++dir_f->highest_version);
686 rd->ino = cpu_to_je32(inode->i_ino);
687 rd->mctime = cpu_to_je32(get_seconds());
690 /* XXX: This is ugly. */
691 rd->type = (mode & S_IFMT) >> 12;
693 rd->node_crc = cpu_to_je32(crc32(0, rd, sizeof(*rd)-8));
694 rd->name_crc = cpu_to_je32(crc32(0, dentry->d_name.name, namelen));
696 fd = jffs2_write_dirent(c, dir_f, rd, dentry->d_name.name, namelen, phys_ofs, ALLOC_NORMAL);
699 /* dirent failed to write. Delete the inode normally
700 as if it were the final unlink() */
701 jffs2_complete_reservation(c);
702 jffs2_free_raw_dirent(rd);
704 jffs2_clear_inode(inode);
708 dir_i->i_mtime = dir_i->i_ctime = ITIME(je32_to_cpu(rd->mctime));
710 jffs2_free_raw_dirent(rd);
712 /* Link the fd into the inode's list, obsoleting an old
714 jffs2_add_fd_to_list(c, fd, &dir_f->dents);
717 jffs2_complete_reservation(c);
719 d_instantiate(dentry, inode);
724 static int jffs2_rename (struct inode *old_dir_i, struct dentry *old_dentry,
725 struct inode *new_dir_i, struct dentry *new_dentry)
728 struct jffs2_sb_info *c = JFFS2_SB_INFO(old_dir_i->i_sb);
729 struct jffs2_inode_info *victim_f = NULL;
733 /* The VFS will check for us and prevent trying to rename a
734 * file over a directory and vice versa, but if it's a directory,
735 * the VFS can't check whether the victim is empty. The filesystem
736 * needs to do that for itself.
738 if (new_dentry->d_inode) {
739 victim_f = JFFS2_INODE_INFO(new_dentry->d_inode);
740 if (S_ISDIR(new_dentry->d_inode->i_mode)) {
741 struct jffs2_full_dirent *fd;
743 down(&victim_f->sem);
744 for (fd = victim_f->dents; fd; fd = fd->next) {
754 /* XXX: We probably ought to alloc enough space for
755 both nodes at the same time. Writing the new link,
756 then getting -ENOSPC, is quite bad :)
759 /* Make a hard link */
761 /* XXX: This is ugly */
762 type = (old_dentry->d_inode->i_mode & S_IFMT) >> 12;
763 if (!type) type = DT_REG;
766 ret = jffs2_do_link(c, JFFS2_INODE_INFO(new_dir_i),
767 old_dentry->d_inode->i_ino, type,
768 new_dentry->d_name.name, new_dentry->d_name.len, now);
774 /* There was a victim. Kill it off nicely */
775 new_dentry->d_inode->i_nlink--;
776 /* Don't oops if the victim was a dirent pointing to an
777 inode which didn't exist. */
778 if (victim_f->inocache) {
779 down(&victim_f->sem);
780 victim_f->inocache->nlink--;
785 /* If it was a directory we moved, and there was no victim,
786 increase i_nlink on its new parent */
787 if (S_ISDIR(old_dentry->d_inode->i_mode) && !victim_f)
788 new_dir_i->i_nlink++;
790 /* Unlink the original */
791 ret = jffs2_do_unlink(c, JFFS2_INODE_INFO(old_dir_i),
792 old_dentry->d_name.name, old_dentry->d_name.len, NULL, now);
794 /* We don't touch inode->i_nlink */
797 /* Oh shit. We really ought to make a single node which can do both atomically */
798 struct jffs2_inode_info *f = JFFS2_INODE_INFO(old_dentry->d_inode);
800 old_dentry->d_inode->i_nlink++;
802 f->inocache->nlink++;
805 printk(KERN_NOTICE "jffs2_rename(): Link succeeded, unlink failed (err %d). You now have a hard link\n", ret);
806 /* Might as well let the VFS know */
807 d_instantiate(new_dentry, old_dentry->d_inode);
808 atomic_inc(&old_dentry->d_inode->i_count);
809 new_dir_i->i_mtime = new_dir_i->i_ctime = ITIME(now);
813 if (S_ISDIR(old_dentry->d_inode->i_mode))
814 old_dir_i->i_nlink--;
816 new_dir_i->i_mtime = new_dir_i->i_ctime = old_dir_i->i_mtime = old_dir_i->i_ctime = ITIME(now);