2 * JFFS2 -- Journalling Flash File System, Version 2.
4 * Copyright © 2001-2007 Red Hat, Inc.
6 * Created by David Woodhouse <dwmw2@infradead.org>
8 * For licensing information, see the file 'LICENCE' in this directory.
12 #include <linux/kernel.h>
13 #include <linux/slab.h>
15 #include <linux/crc32.h>
16 #include <linux/jffs2.h>
17 #include "jffs2_fs_i.h"
18 #include "jffs2_fs_sb.h"
19 #include <linux/time.h>
22 static int jffs2_readdir (struct file *, void *, filldir_t);
24 static int jffs2_create (struct inode *,struct dentry *,int,
26 static struct dentry *jffs2_lookup (struct inode *,struct dentry *,
28 static int jffs2_link (struct dentry *,struct inode *,struct dentry *);
29 static int jffs2_unlink (struct inode *,struct dentry *);
30 static int jffs2_symlink (struct inode *,struct dentry *,const char *);
31 static int jffs2_mkdir (struct inode *,struct dentry *,int);
32 static int jffs2_rmdir (struct inode *,struct dentry *);
33 static int jffs2_mknod (struct inode *,struct dentry *,int,dev_t);
34 static int jffs2_rename (struct inode *, struct dentry *,
35 struct inode *, struct dentry *);
37 const struct file_operations jffs2_dir_operations =
39 .read = generic_read_dir,
40 .readdir = jffs2_readdir,
46 const struct inode_operations jffs2_dir_inode_operations =
48 .create = jffs2_create,
49 .lookup = jffs2_lookup,
51 .unlink = jffs2_unlink,
52 .symlink = jffs2_symlink,
56 .rename = jffs2_rename,
57 .permission = jffs2_permission,
58 .setattr = jffs2_setattr,
59 .setxattr = jffs2_setxattr,
60 .getxattr = jffs2_getxattr,
61 .listxattr = jffs2_listxattr,
62 .removexattr = jffs2_removexattr
65 /***********************************************************************/
68 /* We keep the dirent list sorted in increasing order of name hash,
69 and we use the same hash function as the dentries. Makes this
72 static struct dentry *jffs2_lookup(struct inode *dir_i, struct dentry *target,
75 struct jffs2_inode_info *dir_f;
76 struct jffs2_sb_info *c;
77 struct jffs2_full_dirent *fd = NULL, *fd_list;
79 struct inode *inode = NULL;
81 D1(printk(KERN_DEBUG "jffs2_lookup()\n"));
83 if (target->d_name.len > JFFS2_MAX_NAME_LEN)
84 return ERR_PTR(-ENAMETOOLONG);
86 dir_f = JFFS2_INODE_INFO(dir_i);
87 c = JFFS2_SB_INFO(dir_i->i_sb);
91 /* NB: The 2.2 backport will need to explicitly check for '.' and '..' here */
92 for (fd_list = dir_f->dents; fd_list && fd_list->nhash <= target->d_name.hash; fd_list = fd_list->next) {
93 if (fd_list->nhash == target->d_name.hash &&
94 (!fd || fd_list->version > fd->version) &&
95 strlen(fd_list->name) == target->d_name.len &&
96 !strncmp(fd_list->name, target->d_name.name, target->d_name.len)) {
104 inode = iget(dir_i->i_sb, ino);
106 printk(KERN_WARNING "iget() failed for ino #%u\n", ino);
107 return (ERR_PTR(-EIO));
111 d_add(target, inode);
116 /***********************************************************************/
119 static int jffs2_readdir(struct file *filp, void *dirent, filldir_t filldir)
121 struct jffs2_inode_info *f;
122 struct jffs2_sb_info *c;
123 struct inode *inode = filp->f_path.dentry->d_inode;
124 struct jffs2_full_dirent *fd;
125 unsigned long offset, curofs;
127 D1(printk(KERN_DEBUG "jffs2_readdir() for dir_i #%lu\n", filp->f_path.dentry->d_inode->i_ino));
129 f = JFFS2_INODE_INFO(inode);
130 c = JFFS2_SB_INFO(inode->i_sb);
132 offset = filp->f_pos;
135 D1(printk(KERN_DEBUG "Dirent 0: \".\", ino #%lu\n", inode->i_ino));
136 if (filldir(dirent, ".", 1, 0, inode->i_ino, DT_DIR) < 0)
141 unsigned long pino = parent_ino(filp->f_path.dentry);
142 D1(printk(KERN_DEBUG "Dirent 1: \"..\", ino #%lu\n", pino));
143 if (filldir(dirent, "..", 2, 1, pino, DT_DIR) < 0)
150 for (fd = f->dents; fd; fd = fd->next) {
153 /* First loop: curofs = 2; offset = 2 */
154 if (curofs < offset) {
155 D2(printk(KERN_DEBUG "Skipping dirent: \"%s\", ino #%u, type %d, because curofs %ld < offset %ld\n",
156 fd->name, fd->ino, fd->type, curofs, offset));
160 D2(printk(KERN_DEBUG "Skipping deletion dirent \"%s\"\n", fd->name));
164 D2(printk(KERN_DEBUG "Dirent %ld: \"%s\", ino #%u, type %d\n", offset, fd->name, fd->ino, fd->type));
165 if (filldir(dirent, fd->name, strlen(fd->name), offset, fd->ino, fd->type) < 0)
171 filp->f_pos = offset;
175 /***********************************************************************/
178 static int jffs2_create(struct inode *dir_i, struct dentry *dentry, int mode,
179 struct nameidata *nd)
181 struct jffs2_raw_inode *ri;
182 struct jffs2_inode_info *f, *dir_f;
183 struct jffs2_sb_info *c;
187 ri = jffs2_alloc_raw_inode();
191 c = JFFS2_SB_INFO(dir_i->i_sb);
193 D1(printk(KERN_DEBUG "jffs2_create()\n"));
195 inode = jffs2_new_inode(dir_i, mode, ri);
198 D1(printk(KERN_DEBUG "jffs2_new_inode() failed\n"));
199 jffs2_free_raw_inode(ri);
200 return PTR_ERR(inode);
203 inode->i_op = &jffs2_file_inode_operations;
204 inode->i_fop = &jffs2_file_operations;
205 inode->i_mapping->a_ops = &jffs2_file_address_operations;
206 inode->i_mapping->nrpages = 0;
208 f = JFFS2_INODE_INFO(inode);
209 dir_f = JFFS2_INODE_INFO(dir_i);
211 ret = jffs2_do_create(c, dir_f, f, ri,
212 dentry->d_name.name, dentry->d_name.len);
217 ret = jffs2_init_security(inode, dir_i);
220 ret = jffs2_init_acl(inode, dir_i);
224 dir_i->i_mtime = dir_i->i_ctime = ITIME(je32_to_cpu(ri->ctime));
226 jffs2_free_raw_inode(ri);
227 d_instantiate(dentry, inode);
229 D1(printk(KERN_DEBUG "jffs2_create: Created ino #%lu with mode %o, nlink %d(%d). nrpages %ld\n",
230 inode->i_ino, inode->i_mode, inode->i_nlink, f->inocache->nlink, inode->i_mapping->nrpages));
234 make_bad_inode(inode);
236 jffs2_free_raw_inode(ri);
240 /***********************************************************************/
243 static int jffs2_unlink(struct inode *dir_i, struct dentry *dentry)
245 struct jffs2_sb_info *c = JFFS2_SB_INFO(dir_i->i_sb);
246 struct jffs2_inode_info *dir_f = JFFS2_INODE_INFO(dir_i);
247 struct jffs2_inode_info *dead_f = JFFS2_INODE_INFO(dentry->d_inode);
249 uint32_t now = get_seconds();
251 ret = jffs2_do_unlink(c, dir_f, dentry->d_name.name,
252 dentry->d_name.len, dead_f, now);
253 if (dead_f->inocache)
254 dentry->d_inode->i_nlink = dead_f->inocache->nlink;
256 dir_i->i_mtime = dir_i->i_ctime = ITIME(now);
259 /***********************************************************************/
262 static int jffs2_link (struct dentry *old_dentry, struct inode *dir_i, struct dentry *dentry)
264 struct jffs2_sb_info *c = JFFS2_SB_INFO(old_dentry->d_inode->i_sb);
265 struct jffs2_inode_info *f = JFFS2_INODE_INFO(old_dentry->d_inode);
266 struct jffs2_inode_info *dir_f = JFFS2_INODE_INFO(dir_i);
271 /* Don't let people make hard links to bad inodes. */
275 if (S_ISDIR(old_dentry->d_inode->i_mode))
278 /* XXX: This is ugly */
279 type = (old_dentry->d_inode->i_mode & S_IFMT) >> 12;
280 if (!type) type = DT_REG;
283 ret = jffs2_do_link(c, dir_f, f->inocache->ino, type, dentry->d_name.name, dentry->d_name.len, now);
287 old_dentry->d_inode->i_nlink = ++f->inocache->nlink;
289 d_instantiate(dentry, old_dentry->d_inode);
290 dir_i->i_mtime = dir_i->i_ctime = ITIME(now);
291 atomic_inc(&old_dentry->d_inode->i_count);
296 /***********************************************************************/
298 static int jffs2_symlink (struct inode *dir_i, struct dentry *dentry, const char *target)
300 struct jffs2_inode_info *f, *dir_f;
301 struct jffs2_sb_info *c;
303 struct jffs2_raw_inode *ri;
304 struct jffs2_raw_dirent *rd;
305 struct jffs2_full_dnode *fn;
306 struct jffs2_full_dirent *fd;
309 int ret, targetlen = strlen(target);
311 /* FIXME: If you care. We'd need to use frags for the target
312 if it grows much more than this */
316 ri = jffs2_alloc_raw_inode();
321 c = JFFS2_SB_INFO(dir_i->i_sb);
323 /* Try to reserve enough space for both node and dirent.
324 * Just the node will do for now, though
326 namelen = dentry->d_name.len;
327 ret = jffs2_reserve_space(c, sizeof(*ri) + targetlen, &alloclen,
328 ALLOC_NORMAL, JFFS2_SUMMARY_INODE_SIZE);
331 jffs2_free_raw_inode(ri);
335 inode = jffs2_new_inode(dir_i, S_IFLNK | S_IRWXUGO, ri);
338 jffs2_free_raw_inode(ri);
339 jffs2_complete_reservation(c);
340 return PTR_ERR(inode);
343 inode->i_op = &jffs2_symlink_inode_operations;
345 f = JFFS2_INODE_INFO(inode);
347 inode->i_size = targetlen;
348 ri->isize = ri->dsize = ri->csize = cpu_to_je32(inode->i_size);
349 ri->totlen = cpu_to_je32(sizeof(*ri) + inode->i_size);
350 ri->hdr_crc = cpu_to_je32(crc32(0, ri, sizeof(struct jffs2_unknown_node)-4));
352 ri->compr = JFFS2_COMPR_NONE;
353 ri->data_crc = cpu_to_je32(crc32(0, target, targetlen));
354 ri->node_crc = cpu_to_je32(crc32(0, ri, sizeof(*ri)-8));
356 fn = jffs2_write_dnode(c, f, ri, target, targetlen, ALLOC_NORMAL);
358 jffs2_free_raw_inode(ri);
361 /* Eeek. Wave bye bye */
363 jffs2_complete_reservation(c);
364 jffs2_clear_inode(inode);
368 /* We use f->target field to store the target path. */
369 f->target = kmalloc(targetlen + 1, GFP_KERNEL);
371 printk(KERN_WARNING "Can't allocate %d bytes of memory\n", targetlen + 1);
373 jffs2_complete_reservation(c);
374 jffs2_clear_inode(inode);
378 memcpy(f->target, target, targetlen + 1);
379 D1(printk(KERN_DEBUG "jffs2_symlink: symlink's target '%s' cached\n", (char *)f->target));
381 /* No data here. Only a metadata node, which will be
382 obsoleted by the first data write
387 jffs2_complete_reservation(c);
389 ret = jffs2_init_security(inode, dir_i);
391 jffs2_clear_inode(inode);
394 ret = jffs2_init_acl(inode, dir_i);
396 jffs2_clear_inode(inode);
400 ret = jffs2_reserve_space(c, sizeof(*rd)+namelen, &alloclen,
401 ALLOC_NORMAL, JFFS2_SUMMARY_DIRENT_SIZE(namelen));
404 jffs2_clear_inode(inode);
408 rd = jffs2_alloc_raw_dirent();
410 /* Argh. Now we treat it like a normal delete */
411 jffs2_complete_reservation(c);
412 jffs2_clear_inode(inode);
416 dir_f = JFFS2_INODE_INFO(dir_i);
419 rd->magic = cpu_to_je16(JFFS2_MAGIC_BITMASK);
420 rd->nodetype = cpu_to_je16(JFFS2_NODETYPE_DIRENT);
421 rd->totlen = cpu_to_je32(sizeof(*rd) + namelen);
422 rd->hdr_crc = cpu_to_je32(crc32(0, rd, sizeof(struct jffs2_unknown_node)-4));
424 rd->pino = cpu_to_je32(dir_i->i_ino);
425 rd->version = cpu_to_je32(++dir_f->highest_version);
426 rd->ino = cpu_to_je32(inode->i_ino);
427 rd->mctime = cpu_to_je32(get_seconds());
430 rd->node_crc = cpu_to_je32(crc32(0, rd, sizeof(*rd)-8));
431 rd->name_crc = cpu_to_je32(crc32(0, dentry->d_name.name, namelen));
433 fd = jffs2_write_dirent(c, dir_f, rd, dentry->d_name.name, namelen, ALLOC_NORMAL);
436 /* dirent failed to write. Delete the inode normally
437 as if it were the final unlink() */
438 jffs2_complete_reservation(c);
439 jffs2_free_raw_dirent(rd);
441 jffs2_clear_inode(inode);
445 dir_i->i_mtime = dir_i->i_ctime = ITIME(je32_to_cpu(rd->mctime));
447 jffs2_free_raw_dirent(rd);
449 /* Link the fd into the inode's list, obsoleting an old
451 jffs2_add_fd_to_list(c, fd, &dir_f->dents);
454 jffs2_complete_reservation(c);
456 d_instantiate(dentry, inode);
461 static int jffs2_mkdir (struct inode *dir_i, struct dentry *dentry, int mode)
463 struct jffs2_inode_info *f, *dir_f;
464 struct jffs2_sb_info *c;
466 struct jffs2_raw_inode *ri;
467 struct jffs2_raw_dirent *rd;
468 struct jffs2_full_dnode *fn;
469 struct jffs2_full_dirent *fd;
476 ri = jffs2_alloc_raw_inode();
480 c = JFFS2_SB_INFO(dir_i->i_sb);
482 /* Try to reserve enough space for both node and dirent.
483 * Just the node will do for now, though
485 namelen = dentry->d_name.len;
486 ret = jffs2_reserve_space(c, sizeof(*ri), &alloclen, ALLOC_NORMAL,
487 JFFS2_SUMMARY_INODE_SIZE);
490 jffs2_free_raw_inode(ri);
494 inode = jffs2_new_inode(dir_i, mode, ri);
497 jffs2_free_raw_inode(ri);
498 jffs2_complete_reservation(c);
499 return PTR_ERR(inode);
502 inode->i_op = &jffs2_dir_inode_operations;
503 inode->i_fop = &jffs2_dir_operations;
504 /* Directories get nlink 2 at start */
507 f = JFFS2_INODE_INFO(inode);
509 ri->data_crc = cpu_to_je32(0);
510 ri->node_crc = cpu_to_je32(crc32(0, ri, sizeof(*ri)-8));
512 fn = jffs2_write_dnode(c, f, ri, NULL, 0, ALLOC_NORMAL);
514 jffs2_free_raw_inode(ri);
517 /* Eeek. Wave bye bye */
519 jffs2_complete_reservation(c);
520 jffs2_clear_inode(inode);
523 /* No data here. Only a metadata node, which will be
524 obsoleted by the first data write
529 jffs2_complete_reservation(c);
531 ret = jffs2_init_security(inode, dir_i);
533 jffs2_clear_inode(inode);
536 ret = jffs2_init_acl(inode, dir_i);
538 jffs2_clear_inode(inode);
542 ret = jffs2_reserve_space(c, sizeof(*rd)+namelen, &alloclen,
543 ALLOC_NORMAL, JFFS2_SUMMARY_DIRENT_SIZE(namelen));
546 jffs2_clear_inode(inode);
550 rd = jffs2_alloc_raw_dirent();
552 /* Argh. Now we treat it like a normal delete */
553 jffs2_complete_reservation(c);
554 jffs2_clear_inode(inode);
558 dir_f = JFFS2_INODE_INFO(dir_i);
561 rd->magic = cpu_to_je16(JFFS2_MAGIC_BITMASK);
562 rd->nodetype = cpu_to_je16(JFFS2_NODETYPE_DIRENT);
563 rd->totlen = cpu_to_je32(sizeof(*rd) + namelen);
564 rd->hdr_crc = cpu_to_je32(crc32(0, rd, sizeof(struct jffs2_unknown_node)-4));
566 rd->pino = cpu_to_je32(dir_i->i_ino);
567 rd->version = cpu_to_je32(++dir_f->highest_version);
568 rd->ino = cpu_to_je32(inode->i_ino);
569 rd->mctime = cpu_to_je32(get_seconds());
572 rd->node_crc = cpu_to_je32(crc32(0, rd, sizeof(*rd)-8));
573 rd->name_crc = cpu_to_je32(crc32(0, dentry->d_name.name, namelen));
575 fd = jffs2_write_dirent(c, dir_f, rd, dentry->d_name.name, namelen, ALLOC_NORMAL);
578 /* dirent failed to write. Delete the inode normally
579 as if it were the final unlink() */
580 jffs2_complete_reservation(c);
581 jffs2_free_raw_dirent(rd);
583 jffs2_clear_inode(inode);
587 dir_i->i_mtime = dir_i->i_ctime = ITIME(je32_to_cpu(rd->mctime));
590 jffs2_free_raw_dirent(rd);
592 /* Link the fd into the inode's list, obsoleting an old
594 jffs2_add_fd_to_list(c, fd, &dir_f->dents);
597 jffs2_complete_reservation(c);
599 d_instantiate(dentry, inode);
603 static int jffs2_rmdir (struct inode *dir_i, struct dentry *dentry)
605 struct jffs2_inode_info *f = JFFS2_INODE_INFO(dentry->d_inode);
606 struct jffs2_full_dirent *fd;
609 for (fd = f->dents ; fd; fd = fd->next) {
613 ret = jffs2_unlink(dir_i, dentry);
619 static int jffs2_mknod (struct inode *dir_i, struct dentry *dentry, int mode, dev_t rdev)
621 struct jffs2_inode_info *f, *dir_f;
622 struct jffs2_sb_info *c;
624 struct jffs2_raw_inode *ri;
625 struct jffs2_raw_dirent *rd;
626 struct jffs2_full_dnode *fn;
627 struct jffs2_full_dirent *fd;
629 union jffs2_device_node dev;
634 if (!new_valid_dev(rdev))
637 ri = jffs2_alloc_raw_inode();
641 c = JFFS2_SB_INFO(dir_i->i_sb);
643 if (S_ISBLK(mode) || S_ISCHR(mode))
644 devlen = jffs2_encode_dev(&dev, rdev);
646 /* Try to reserve enough space for both node and dirent.
647 * Just the node will do for now, though
649 namelen = dentry->d_name.len;
650 ret = jffs2_reserve_space(c, sizeof(*ri) + devlen, &alloclen,
651 ALLOC_NORMAL, JFFS2_SUMMARY_INODE_SIZE);
654 jffs2_free_raw_inode(ri);
658 inode = jffs2_new_inode(dir_i, mode, ri);
661 jffs2_free_raw_inode(ri);
662 jffs2_complete_reservation(c);
663 return PTR_ERR(inode);
665 inode->i_op = &jffs2_file_inode_operations;
666 init_special_inode(inode, inode->i_mode, rdev);
668 f = JFFS2_INODE_INFO(inode);
670 ri->dsize = ri->csize = cpu_to_je32(devlen);
671 ri->totlen = cpu_to_je32(sizeof(*ri) + devlen);
672 ri->hdr_crc = cpu_to_je32(crc32(0, ri, sizeof(struct jffs2_unknown_node)-4));
674 ri->compr = JFFS2_COMPR_NONE;
675 ri->data_crc = cpu_to_je32(crc32(0, &dev, devlen));
676 ri->node_crc = cpu_to_je32(crc32(0, ri, sizeof(*ri)-8));
678 fn = jffs2_write_dnode(c, f, ri, (char *)&dev, devlen, ALLOC_NORMAL);
680 jffs2_free_raw_inode(ri);
683 /* Eeek. Wave bye bye */
685 jffs2_complete_reservation(c);
686 jffs2_clear_inode(inode);
689 /* No data here. Only a metadata node, which will be
690 obsoleted by the first data write
695 jffs2_complete_reservation(c);
697 ret = jffs2_init_security(inode, dir_i);
699 jffs2_clear_inode(inode);
702 ret = jffs2_init_acl(inode, dir_i);
704 jffs2_clear_inode(inode);
708 ret = jffs2_reserve_space(c, sizeof(*rd)+namelen, &alloclen,
709 ALLOC_NORMAL, JFFS2_SUMMARY_DIRENT_SIZE(namelen));
712 jffs2_clear_inode(inode);
716 rd = jffs2_alloc_raw_dirent();
718 /* Argh. Now we treat it like a normal delete */
719 jffs2_complete_reservation(c);
720 jffs2_clear_inode(inode);
724 dir_f = JFFS2_INODE_INFO(dir_i);
727 rd->magic = cpu_to_je16(JFFS2_MAGIC_BITMASK);
728 rd->nodetype = cpu_to_je16(JFFS2_NODETYPE_DIRENT);
729 rd->totlen = cpu_to_je32(sizeof(*rd) + namelen);
730 rd->hdr_crc = cpu_to_je32(crc32(0, rd, sizeof(struct jffs2_unknown_node)-4));
732 rd->pino = cpu_to_je32(dir_i->i_ino);
733 rd->version = cpu_to_je32(++dir_f->highest_version);
734 rd->ino = cpu_to_je32(inode->i_ino);
735 rd->mctime = cpu_to_je32(get_seconds());
738 /* XXX: This is ugly. */
739 rd->type = (mode & S_IFMT) >> 12;
741 rd->node_crc = cpu_to_je32(crc32(0, rd, sizeof(*rd)-8));
742 rd->name_crc = cpu_to_je32(crc32(0, dentry->d_name.name, namelen));
744 fd = jffs2_write_dirent(c, dir_f, rd, dentry->d_name.name, namelen, ALLOC_NORMAL);
747 /* dirent failed to write. Delete the inode normally
748 as if it were the final unlink() */
749 jffs2_complete_reservation(c);
750 jffs2_free_raw_dirent(rd);
752 jffs2_clear_inode(inode);
756 dir_i->i_mtime = dir_i->i_ctime = ITIME(je32_to_cpu(rd->mctime));
758 jffs2_free_raw_dirent(rd);
760 /* Link the fd into the inode's list, obsoleting an old
762 jffs2_add_fd_to_list(c, fd, &dir_f->dents);
765 jffs2_complete_reservation(c);
767 d_instantiate(dentry, inode);
772 static int jffs2_rename (struct inode *old_dir_i, struct dentry *old_dentry,
773 struct inode *new_dir_i, struct dentry *new_dentry)
776 struct jffs2_sb_info *c = JFFS2_SB_INFO(old_dir_i->i_sb);
777 struct jffs2_inode_info *victim_f = NULL;
781 /* The VFS will check for us and prevent trying to rename a
782 * file over a directory and vice versa, but if it's a directory,
783 * the VFS can't check whether the victim is empty. The filesystem
784 * needs to do that for itself.
786 if (new_dentry->d_inode) {
787 victim_f = JFFS2_INODE_INFO(new_dentry->d_inode);
788 if (S_ISDIR(new_dentry->d_inode->i_mode)) {
789 struct jffs2_full_dirent *fd;
791 down(&victim_f->sem);
792 for (fd = victim_f->dents; fd; fd = fd->next) {
802 /* XXX: We probably ought to alloc enough space for
803 both nodes at the same time. Writing the new link,
804 then getting -ENOSPC, is quite bad :)
807 /* Make a hard link */
809 /* XXX: This is ugly */
810 type = (old_dentry->d_inode->i_mode & S_IFMT) >> 12;
811 if (!type) type = DT_REG;
814 ret = jffs2_do_link(c, JFFS2_INODE_INFO(new_dir_i),
815 old_dentry->d_inode->i_ino, type,
816 new_dentry->d_name.name, new_dentry->d_name.len, now);
822 /* There was a victim. Kill it off nicely */
823 drop_nlink(new_dentry->d_inode);
824 /* Don't oops if the victim was a dirent pointing to an
825 inode which didn't exist. */
826 if (victim_f->inocache) {
827 down(&victim_f->sem);
828 victim_f->inocache->nlink--;
833 /* If it was a directory we moved, and there was no victim,
834 increase i_nlink on its new parent */
835 if (S_ISDIR(old_dentry->d_inode->i_mode) && !victim_f)
836 inc_nlink(new_dir_i);
838 /* Unlink the original */
839 ret = jffs2_do_unlink(c, JFFS2_INODE_INFO(old_dir_i),
840 old_dentry->d_name.name, old_dentry->d_name.len, NULL, now);
842 /* We don't touch inode->i_nlink */
845 /* Oh shit. We really ought to make a single node which can do both atomically */
846 struct jffs2_inode_info *f = JFFS2_INODE_INFO(old_dentry->d_inode);
848 inc_nlink(old_dentry->d_inode);
850 f->inocache->nlink++;
853 printk(KERN_NOTICE "jffs2_rename(): Link succeeded, unlink failed (err %d). You now have a hard link\n", ret);
854 /* Might as well let the VFS know */
855 d_instantiate(new_dentry, old_dentry->d_inode);
856 atomic_inc(&old_dentry->d_inode->i_count);
857 new_dir_i->i_mtime = new_dir_i->i_ctime = ITIME(now);
861 if (S_ISDIR(old_dentry->d_inode->i_mode))
862 drop_nlink(old_dir_i);
864 new_dir_i->i_mtime = new_dir_i->i_ctime = old_dir_i->i_mtime = old_dir_i->i_ctime = ITIME(now);