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Linux/fs/hfsplus/inode.c

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  1 /*
  2  *  linux/fs/hfsplus/inode.c
  3  *
  4  * Copyright (C) 2001
  5  * Brad Boyer (flar@allandria.com)
  6  * (C) 2003 Ardis Technologies <roman@ardistech.com>
  7  *
  8  * Inode handling routines
  9  */
 10 
 11 #include <linux/blkdev.h>
 12 #include <linux/mm.h>
 13 #include <linux/fs.h>
 14 #include <linux/pagemap.h>
 15 #include <linux/mpage.h>
 16 #include <linux/sched.h>
 17 #include <linux/aio.h>
 18 
 19 #include "hfsplus_fs.h"
 20 #include "hfsplus_raw.h"
 21 #include "xattr.h"
 22 
 23 static int hfsplus_readpage(struct file *file, struct page *page)
 24 {
 25         return block_read_full_page(page, hfsplus_get_block);
 26 }
 27 
 28 static int hfsplus_writepage(struct page *page, struct writeback_control *wbc)
 29 {
 30         return block_write_full_page(page, hfsplus_get_block, wbc);
 31 }
 32 
 33 static void hfsplus_write_failed(struct address_space *mapping, loff_t to)
 34 {
 35         struct inode *inode = mapping->host;
 36 
 37         if (to > inode->i_size) {
 38                 truncate_pagecache(inode, to, inode->i_size);
 39                 hfsplus_file_truncate(inode);
 40         }
 41 }
 42 
 43 static int hfsplus_write_begin(struct file *file, struct address_space *mapping,
 44                         loff_t pos, unsigned len, unsigned flags,
 45                         struct page **pagep, void **fsdata)
 46 {
 47         int ret;
 48 
 49         *pagep = NULL;
 50         ret = cont_write_begin(file, mapping, pos, len, flags, pagep, fsdata,
 51                                 hfsplus_get_block,
 52                                 &HFSPLUS_I(mapping->host)->phys_size);
 53         if (unlikely(ret))
 54                 hfsplus_write_failed(mapping, pos + len);
 55 
 56         return ret;
 57 }
 58 
 59 static sector_t hfsplus_bmap(struct address_space *mapping, sector_t block)
 60 {
 61         return generic_block_bmap(mapping, block, hfsplus_get_block);
 62 }
 63 
 64 static int hfsplus_releasepage(struct page *page, gfp_t mask)
 65 {
 66         struct inode *inode = page->mapping->host;
 67         struct super_block *sb = inode->i_sb;
 68         struct hfs_btree *tree;
 69         struct hfs_bnode *node;
 70         u32 nidx;
 71         int i, res = 1;
 72 
 73         switch (inode->i_ino) {
 74         case HFSPLUS_EXT_CNID:
 75                 tree = HFSPLUS_SB(sb)->ext_tree;
 76                 break;
 77         case HFSPLUS_CAT_CNID:
 78                 tree = HFSPLUS_SB(sb)->cat_tree;
 79                 break;
 80         case HFSPLUS_ATTR_CNID:
 81                 tree = HFSPLUS_SB(sb)->attr_tree;
 82                 break;
 83         default:
 84                 BUG();
 85                 return 0;
 86         }
 87         if (!tree)
 88                 return 0;
 89         if (tree->node_size >= PAGE_CACHE_SIZE) {
 90                 nidx = page->index >>
 91                         (tree->node_size_shift - PAGE_CACHE_SHIFT);
 92                 spin_lock(&tree->hash_lock);
 93                 node = hfs_bnode_findhash(tree, nidx);
 94                 if (!node)
 95                         ;
 96                 else if (atomic_read(&node->refcnt))
 97                         res = 0;
 98                 if (res && node) {
 99                         hfs_bnode_unhash(node);
100                         hfs_bnode_free(node);
101                 }
102                 spin_unlock(&tree->hash_lock);
103         } else {
104                 nidx = page->index <<
105                         (PAGE_CACHE_SHIFT - tree->node_size_shift);
106                 i = 1 << (PAGE_CACHE_SHIFT - tree->node_size_shift);
107                 spin_lock(&tree->hash_lock);
108                 do {
109                         node = hfs_bnode_findhash(tree, nidx++);
110                         if (!node)
111                                 continue;
112                         if (atomic_read(&node->refcnt)) {
113                                 res = 0;
114                                 break;
115                         }
116                         hfs_bnode_unhash(node);
117                         hfs_bnode_free(node);
118                 } while (--i && nidx < tree->node_count);
119                 spin_unlock(&tree->hash_lock);
120         }
121         return res ? try_to_free_buffers(page) : 0;
122 }
123 
124 static ssize_t hfsplus_direct_IO(int rw, struct kiocb *iocb,
125                 const struct iovec *iov, loff_t offset, unsigned long nr_segs)
126 {
127         struct file *file = iocb->ki_filp;
128         struct address_space *mapping = file->f_mapping;
129         struct inode *inode = file_inode(file)->i_mapping->host;
130         ssize_t ret;
131 
132         ret = blockdev_direct_IO(rw, iocb, inode, iov, offset, nr_segs,
133                                  hfsplus_get_block);
134 
135         /*
136          * In case of error extending write may have instantiated a few
137          * blocks outside i_size. Trim these off again.
138          */
139         if (unlikely((rw & WRITE) && ret < 0)) {
140                 loff_t isize = i_size_read(inode);
141                 loff_t end = offset + iov_length(iov, nr_segs);
142 
143                 if (end > isize)
144                         hfsplus_write_failed(mapping, end);
145         }
146 
147         return ret;
148 }
149 
150 static int hfsplus_writepages(struct address_space *mapping,
151                               struct writeback_control *wbc)
152 {
153         return mpage_writepages(mapping, wbc, hfsplus_get_block);
154 }
155 
156 const struct address_space_operations hfsplus_btree_aops = {
157         .readpage       = hfsplus_readpage,
158         .writepage      = hfsplus_writepage,
159         .write_begin    = hfsplus_write_begin,
160         .write_end      = generic_write_end,
161         .bmap           = hfsplus_bmap,
162         .releasepage    = hfsplus_releasepage,
163 };
164 
165 const struct address_space_operations hfsplus_aops = {
166         .readpage       = hfsplus_readpage,
167         .writepage      = hfsplus_writepage,
168         .write_begin    = hfsplus_write_begin,
169         .write_end      = generic_write_end,
170         .bmap           = hfsplus_bmap,
171         .direct_IO      = hfsplus_direct_IO,
172         .writepages     = hfsplus_writepages,
173 };
174 
175 const struct dentry_operations hfsplus_dentry_operations = {
176         .d_hash       = hfsplus_hash_dentry,
177         .d_compare    = hfsplus_compare_dentry,
178 };
179 
180 static struct dentry *hfsplus_file_lookup(struct inode *dir,
181                 struct dentry *dentry, unsigned int flags)
182 {
183         struct hfs_find_data fd;
184         struct super_block *sb = dir->i_sb;
185         struct inode *inode = NULL;
186         struct hfsplus_inode_info *hip;
187         int err;
188 
189         if (HFSPLUS_IS_RSRC(dir) || strcmp(dentry->d_name.name, "rsrc"))
190                 goto out;
191 
192         inode = HFSPLUS_I(dir)->rsrc_inode;
193         if (inode)
194                 goto out;
195 
196         inode = new_inode(sb);
197         if (!inode)
198                 return ERR_PTR(-ENOMEM);
199 
200         hip = HFSPLUS_I(inode);
201         inode->i_ino = dir->i_ino;
202         INIT_LIST_HEAD(&hip->open_dir_list);
203         mutex_init(&hip->extents_lock);
204         hip->extent_state = 0;
205         hip->flags = 0;
206         hip->userflags = 0;
207         set_bit(HFSPLUS_I_RSRC, &hip->flags);
208 
209         err = hfs_find_init(HFSPLUS_SB(sb)->cat_tree, &fd);
210         if (!err) {
211                 err = hfsplus_find_cat(sb, dir->i_ino, &fd);
212                 if (!err)
213                         err = hfsplus_cat_read_inode(inode, &fd);
214                 hfs_find_exit(&fd);
215         }
216         if (err) {
217                 iput(inode);
218                 return ERR_PTR(err);
219         }
220         hip->rsrc_inode = dir;
221         HFSPLUS_I(dir)->rsrc_inode = inode;
222         igrab(dir);
223 
224         /*
225          * __mark_inode_dirty expects inodes to be hashed.  Since we don't
226          * want resource fork inodes in the regular inode space, we make them
227          * appear hashed, but do not put on any lists.  hlist_del()
228          * will work fine and require no locking.
229          */
230         hlist_add_fake(&inode->i_hash);
231 
232         mark_inode_dirty(inode);
233 out:
234         d_add(dentry, inode);
235         return NULL;
236 }
237 
238 static void hfsplus_get_perms(struct inode *inode,
239                 struct hfsplus_perm *perms, int dir)
240 {
241         struct hfsplus_sb_info *sbi = HFSPLUS_SB(inode->i_sb);
242         u16 mode;
243 
244         mode = be16_to_cpu(perms->mode);
245 
246         i_uid_write(inode, be32_to_cpu(perms->owner));
247         if (!i_uid_read(inode) && !mode)
248                 inode->i_uid = sbi->uid;
249 
250         i_gid_write(inode, be32_to_cpu(perms->group));
251         if (!i_gid_read(inode) && !mode)
252                 inode->i_gid = sbi->gid;
253 
254         if (dir) {
255                 mode = mode ? (mode & S_IALLUGO) : (S_IRWXUGO & ~(sbi->umask));
256                 mode |= S_IFDIR;
257         } else if (!mode)
258                 mode = S_IFREG | ((S_IRUGO|S_IWUGO) & ~(sbi->umask));
259         inode->i_mode = mode;
260 
261         HFSPLUS_I(inode)->userflags = perms->userflags;
262         if (perms->rootflags & HFSPLUS_FLG_IMMUTABLE)
263                 inode->i_flags |= S_IMMUTABLE;
264         else
265                 inode->i_flags &= ~S_IMMUTABLE;
266         if (perms->rootflags & HFSPLUS_FLG_APPEND)
267                 inode->i_flags |= S_APPEND;
268         else
269                 inode->i_flags &= ~S_APPEND;
270 }
271 
272 static int hfsplus_file_open(struct inode *inode, struct file *file)
273 {
274         if (HFSPLUS_IS_RSRC(inode))
275                 inode = HFSPLUS_I(inode)->rsrc_inode;
276         if (!(file->f_flags & O_LARGEFILE) && i_size_read(inode) > MAX_NON_LFS)
277                 return -EOVERFLOW;
278         atomic_inc(&HFSPLUS_I(inode)->opencnt);
279         return 0;
280 }
281 
282 static int hfsplus_file_release(struct inode *inode, struct file *file)
283 {
284         struct super_block *sb = inode->i_sb;
285 
286         if (HFSPLUS_IS_RSRC(inode))
287                 inode = HFSPLUS_I(inode)->rsrc_inode;
288         if (atomic_dec_and_test(&HFSPLUS_I(inode)->opencnt)) {
289                 mutex_lock(&inode->i_mutex);
290                 hfsplus_file_truncate(inode);
291                 if (inode->i_flags & S_DEAD) {
292                         hfsplus_delete_cat(inode->i_ino,
293                                            HFSPLUS_SB(sb)->hidden_dir, NULL);
294                         hfsplus_delete_inode(inode);
295                 }
296                 mutex_unlock(&inode->i_mutex);
297         }
298         return 0;
299 }
300 
301 static int hfsplus_setattr(struct dentry *dentry, struct iattr *attr)
302 {
303         struct inode *inode = dentry->d_inode;
304         int error;
305 
306         error = inode_change_ok(inode, attr);
307         if (error)
308                 return error;
309 
310         if ((attr->ia_valid & ATTR_SIZE) &&
311             attr->ia_size != i_size_read(inode)) {
312                 inode_dio_wait(inode);
313                 truncate_setsize(inode, attr->ia_size);
314                 hfsplus_file_truncate(inode);
315         }
316 
317         setattr_copy(inode, attr);
318         mark_inode_dirty(inode);
319         return 0;
320 }
321 
322 int hfsplus_file_fsync(struct file *file, loff_t start, loff_t end,
323                        int datasync)
324 {
325         struct inode *inode = file->f_mapping->host;
326         struct hfsplus_inode_info *hip = HFSPLUS_I(inode);
327         struct hfsplus_sb_info *sbi = HFSPLUS_SB(inode->i_sb);
328         int error = 0, error2;
329 
330         error = filemap_write_and_wait_range(inode->i_mapping, start, end);
331         if (error)
332                 return error;
333         mutex_lock(&inode->i_mutex);
334 
335         /*
336          * Sync inode metadata into the catalog and extent trees.
337          */
338         sync_inode_metadata(inode, 1);
339 
340         /*
341          * And explicitly write out the btrees.
342          */
343         if (test_and_clear_bit(HFSPLUS_I_CAT_DIRTY, &hip->flags))
344                 error = filemap_write_and_wait(sbi->cat_tree->inode->i_mapping);
345 
346         if (test_and_clear_bit(HFSPLUS_I_EXT_DIRTY, &hip->flags)) {
347                 error2 =
348                         filemap_write_and_wait(sbi->ext_tree->inode->i_mapping);
349                 if (!error)
350                         error = error2;
351         }
352 
353         if (test_and_clear_bit(HFSPLUS_I_ATTR_DIRTY, &hip->flags)) {
354                 if (sbi->attr_tree) {
355                         error2 =
356                                 filemap_write_and_wait(
357                                             sbi->attr_tree->inode->i_mapping);
358                         if (!error)
359                                 error = error2;
360                 } else {
361                         pr_err("sync non-existent attributes tree\n");
362                 }
363         }
364 
365         if (test_and_clear_bit(HFSPLUS_I_ALLOC_DIRTY, &hip->flags)) {
366                 error2 = filemap_write_and_wait(sbi->alloc_file->i_mapping);
367                 if (!error)
368                         error = error2;
369         }
370 
371         if (!test_bit(HFSPLUS_SB_NOBARRIER, &sbi->flags))
372                 blkdev_issue_flush(inode->i_sb->s_bdev, GFP_KERNEL, NULL);
373 
374         mutex_unlock(&inode->i_mutex);
375 
376         return error;
377 }
378 
379 static const struct inode_operations hfsplus_file_inode_operations = {
380         .lookup         = hfsplus_file_lookup,
381         .setattr        = hfsplus_setattr,
382         .setxattr       = generic_setxattr,
383         .getxattr       = generic_getxattr,
384         .listxattr      = hfsplus_listxattr,
385         .removexattr    = hfsplus_removexattr,
386 };
387 
388 static const struct file_operations hfsplus_file_operations = {
389         .llseek         = generic_file_llseek,
390         .read           = do_sync_read,
391         .aio_read       = generic_file_aio_read,
392         .write          = do_sync_write,
393         .aio_write      = generic_file_aio_write,
394         .mmap           = generic_file_mmap,
395         .splice_read    = generic_file_splice_read,
396         .fsync          = hfsplus_file_fsync,
397         .open           = hfsplus_file_open,
398         .release        = hfsplus_file_release,
399         .unlocked_ioctl = hfsplus_ioctl,
400 };
401 
402 struct inode *hfsplus_new_inode(struct super_block *sb, umode_t mode)
403 {
404         struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb);
405         struct inode *inode = new_inode(sb);
406         struct hfsplus_inode_info *hip;
407 
408         if (!inode)
409                 return NULL;
410 
411         inode->i_ino = sbi->next_cnid++;
412         inode->i_mode = mode;
413         inode->i_uid = current_fsuid();
414         inode->i_gid = current_fsgid();
415         set_nlink(inode, 1);
416         inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME_SEC;
417 
418         hip = HFSPLUS_I(inode);
419         INIT_LIST_HEAD(&hip->open_dir_list);
420         mutex_init(&hip->extents_lock);
421         atomic_set(&hip->opencnt, 0);
422         hip->extent_state = 0;
423         hip->flags = 0;
424         hip->userflags = 0;
425         memset(hip->first_extents, 0, sizeof(hfsplus_extent_rec));
426         memset(hip->cached_extents, 0, sizeof(hfsplus_extent_rec));
427         hip->alloc_blocks = 0;
428         hip->first_blocks = 0;
429         hip->cached_start = 0;
430         hip->cached_blocks = 0;
431         hip->phys_size = 0;
432         hip->fs_blocks = 0;
433         hip->rsrc_inode = NULL;
434         if (S_ISDIR(inode->i_mode)) {
435                 inode->i_size = 2;
436                 sbi->folder_count++;
437                 inode->i_op = &hfsplus_dir_inode_operations;
438                 inode->i_fop = &hfsplus_dir_operations;
439         } else if (S_ISREG(inode->i_mode)) {
440                 sbi->file_count++;
441                 inode->i_op = &hfsplus_file_inode_operations;
442                 inode->i_fop = &hfsplus_file_operations;
443                 inode->i_mapping->a_ops = &hfsplus_aops;
444                 hip->clump_blocks = sbi->data_clump_blocks;
445         } else if (S_ISLNK(inode->i_mode)) {
446                 sbi->file_count++;
447                 inode->i_op = &page_symlink_inode_operations;
448                 inode->i_mapping->a_ops = &hfsplus_aops;
449                 hip->clump_blocks = 1;
450         } else
451                 sbi->file_count++;
452         insert_inode_hash(inode);
453         mark_inode_dirty(inode);
454         hfsplus_mark_mdb_dirty(sb);
455 
456         return inode;
457 }
458 
459 void hfsplus_delete_inode(struct inode *inode)
460 {
461         struct super_block *sb = inode->i_sb;
462 
463         if (S_ISDIR(inode->i_mode)) {
464                 HFSPLUS_SB(sb)->folder_count--;
465                 hfsplus_mark_mdb_dirty(sb);
466                 return;
467         }
468         HFSPLUS_SB(sb)->file_count--;
469         if (S_ISREG(inode->i_mode)) {
470                 if (!inode->i_nlink) {
471                         inode->i_size = 0;
472                         hfsplus_file_truncate(inode);
473                 }
474         } else if (S_ISLNK(inode->i_mode)) {
475                 inode->i_size = 0;
476                 hfsplus_file_truncate(inode);
477         }
478         hfsplus_mark_mdb_dirty(sb);
479 }
480 
481 void hfsplus_inode_read_fork(struct inode *inode, struct hfsplus_fork_raw *fork)
482 {
483         struct super_block *sb = inode->i_sb;
484         struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb);
485         struct hfsplus_inode_info *hip = HFSPLUS_I(inode);
486         u32 count;
487         int i;
488 
489         memcpy(&hip->first_extents, &fork->extents, sizeof(hfsplus_extent_rec));
490         for (count = 0, i = 0; i < 8; i++)
491                 count += be32_to_cpu(fork->extents[i].block_count);
492         hip->first_blocks = count;
493         memset(hip->cached_extents, 0, sizeof(hfsplus_extent_rec));
494         hip->cached_start = 0;
495         hip->cached_blocks = 0;
496 
497         hip->alloc_blocks = be32_to_cpu(fork->total_blocks);
498         hip->phys_size = inode->i_size = be64_to_cpu(fork->total_size);
499         hip->fs_blocks =
500                 (inode->i_size + sb->s_blocksize - 1) >> sb->s_blocksize_bits;
501         inode_set_bytes(inode, hip->fs_blocks << sb->s_blocksize_bits);
502         hip->clump_blocks =
503                 be32_to_cpu(fork->clump_size) >> sbi->alloc_blksz_shift;
504         if (!hip->clump_blocks) {
505                 hip->clump_blocks = HFSPLUS_IS_RSRC(inode) ?
506                         sbi->rsrc_clump_blocks :
507                         sbi->data_clump_blocks;
508         }
509 }
510 
511 void hfsplus_inode_write_fork(struct inode *inode,
512                 struct hfsplus_fork_raw *fork)
513 {
514         memcpy(&fork->extents, &HFSPLUS_I(inode)->first_extents,
515                sizeof(hfsplus_extent_rec));
516         fork->total_size = cpu_to_be64(inode->i_size);
517         fork->total_blocks = cpu_to_be32(HFSPLUS_I(inode)->alloc_blocks);
518 }
519 
520 int hfsplus_cat_read_inode(struct inode *inode, struct hfs_find_data *fd)
521 {
522         hfsplus_cat_entry entry;
523         int res = 0;
524         u16 type;
525 
526         type = hfs_bnode_read_u16(fd->bnode, fd->entryoffset);
527 
528         HFSPLUS_I(inode)->linkid = 0;
529         if (type == HFSPLUS_FOLDER) {
530                 struct hfsplus_cat_folder *folder = &entry.folder;
531 
532                 if (fd->entrylength < sizeof(struct hfsplus_cat_folder))
533                         /* panic? */;
534                 hfs_bnode_read(fd->bnode, &entry, fd->entryoffset,
535                                         sizeof(struct hfsplus_cat_folder));
536                 hfsplus_get_perms(inode, &folder->permissions, 1);
537                 set_nlink(inode, 1);
538                 inode->i_size = 2 + be32_to_cpu(folder->valence);
539                 inode->i_atime = hfsp_mt2ut(folder->access_date);
540                 inode->i_mtime = hfsp_mt2ut(folder->content_mod_date);
541                 inode->i_ctime = hfsp_mt2ut(folder->attribute_mod_date);
542                 HFSPLUS_I(inode)->create_date = folder->create_date;
543                 HFSPLUS_I(inode)->fs_blocks = 0;
544                 inode->i_op = &hfsplus_dir_inode_operations;
545                 inode->i_fop = &hfsplus_dir_operations;
546         } else if (type == HFSPLUS_FILE) {
547                 struct hfsplus_cat_file *file = &entry.file;
548 
549                 if (fd->entrylength < sizeof(struct hfsplus_cat_file))
550                         /* panic? */;
551                 hfs_bnode_read(fd->bnode, &entry, fd->entryoffset,
552                                         sizeof(struct hfsplus_cat_file));
553 
554                 hfsplus_inode_read_fork(inode, HFSPLUS_IS_RSRC(inode) ?
555                                         &file->rsrc_fork : &file->data_fork);
556                 hfsplus_get_perms(inode, &file->permissions, 0);
557                 set_nlink(inode, 1);
558                 if (S_ISREG(inode->i_mode)) {
559                         if (file->permissions.dev)
560                                 set_nlink(inode,
561                                           be32_to_cpu(file->permissions.dev));
562                         inode->i_op = &hfsplus_file_inode_operations;
563                         inode->i_fop = &hfsplus_file_operations;
564                         inode->i_mapping->a_ops = &hfsplus_aops;
565                 } else if (S_ISLNK(inode->i_mode)) {
566                         inode->i_op = &page_symlink_inode_operations;
567                         inode->i_mapping->a_ops = &hfsplus_aops;
568                 } else {
569                         init_special_inode(inode, inode->i_mode,
570                                            be32_to_cpu(file->permissions.dev));
571                 }
572                 inode->i_atime = hfsp_mt2ut(file->access_date);
573                 inode->i_mtime = hfsp_mt2ut(file->content_mod_date);
574                 inode->i_ctime = hfsp_mt2ut(file->attribute_mod_date);
575                 HFSPLUS_I(inode)->create_date = file->create_date;
576         } else {
577                 pr_err("bad catalog entry used to create inode\n");
578                 res = -EIO;
579         }
580         return res;
581 }
582 
583 int hfsplus_cat_write_inode(struct inode *inode)
584 {
585         struct inode *main_inode = inode;
586         struct hfs_find_data fd;
587         hfsplus_cat_entry entry;
588 
589         if (HFSPLUS_IS_RSRC(inode))
590                 main_inode = HFSPLUS_I(inode)->rsrc_inode;
591 
592         if (!main_inode->i_nlink)
593                 return 0;
594 
595         if (hfs_find_init(HFSPLUS_SB(main_inode->i_sb)->cat_tree, &fd))
596                 /* panic? */
597                 return -EIO;
598 
599         if (hfsplus_find_cat(main_inode->i_sb, main_inode->i_ino, &fd))
600                 /* panic? */
601                 goto out;
602 
603         if (S_ISDIR(main_inode->i_mode)) {
604                 struct hfsplus_cat_folder *folder = &entry.folder;
605 
606                 if (fd.entrylength < sizeof(struct hfsplus_cat_folder))
607                         /* panic? */;
608                 hfs_bnode_read(fd.bnode, &entry, fd.entryoffset,
609                                         sizeof(struct hfsplus_cat_folder));
610                 /* simple node checks? */
611                 hfsplus_cat_set_perms(inode, &folder->permissions);
612                 folder->access_date = hfsp_ut2mt(inode->i_atime);
613                 folder->content_mod_date = hfsp_ut2mt(inode->i_mtime);
614                 folder->attribute_mod_date = hfsp_ut2mt(inode->i_ctime);
615                 folder->valence = cpu_to_be32(inode->i_size - 2);
616                 hfs_bnode_write(fd.bnode, &entry, fd.entryoffset,
617                                          sizeof(struct hfsplus_cat_folder));
618         } else if (HFSPLUS_IS_RSRC(inode)) {
619                 struct hfsplus_cat_file *file = &entry.file;
620                 hfs_bnode_read(fd.bnode, &entry, fd.entryoffset,
621                                sizeof(struct hfsplus_cat_file));
622                 hfsplus_inode_write_fork(inode, &file->rsrc_fork);
623                 hfs_bnode_write(fd.bnode, &entry, fd.entryoffset,
624                                 sizeof(struct hfsplus_cat_file));
625         } else {
626                 struct hfsplus_cat_file *file = &entry.file;
627 
628                 if (fd.entrylength < sizeof(struct hfsplus_cat_file))
629                         /* panic? */;
630                 hfs_bnode_read(fd.bnode, &entry, fd.entryoffset,
631                                         sizeof(struct hfsplus_cat_file));
632                 hfsplus_inode_write_fork(inode, &file->data_fork);
633                 hfsplus_cat_set_perms(inode, &file->permissions);
634                 if (HFSPLUS_FLG_IMMUTABLE &
635                                 (file->permissions.rootflags |
636                                         file->permissions.userflags))
637                         file->flags |= cpu_to_be16(HFSPLUS_FILE_LOCKED);
638                 else
639                         file->flags &= cpu_to_be16(~HFSPLUS_FILE_LOCKED);
640                 file->access_date = hfsp_ut2mt(inode->i_atime);
641                 file->content_mod_date = hfsp_ut2mt(inode->i_mtime);
642                 file->attribute_mod_date = hfsp_ut2mt(inode->i_ctime);
643                 hfs_bnode_write(fd.bnode, &entry, fd.entryoffset,
644                                          sizeof(struct hfsplus_cat_file));
645         }
646 
647         set_bit(HFSPLUS_I_CAT_DIRTY, &HFSPLUS_I(inode)->flags);
648 out:
649         hfs_find_exit(&fd);
650         return 0;
651 }
652 

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