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
hfsplus_readpage(struct file * file,struct page * page)23 static int hfsplus_readpage(struct file *file, struct page *page)
24 {
25 return block_read_full_page(page, hfsplus_get_block);
26 }
27
hfsplus_writepage(struct page * page,struct writeback_control * wbc)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
hfsplus_write_failed(struct address_space * mapping,loff_t to)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
hfsplus_write_begin(struct file * file,struct address_space * mapping,loff_t pos,unsigned len,unsigned flags,struct page ** pagep,void ** fsdata)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
hfsplus_bmap(struct address_space * mapping,sector_t block)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
hfsplus_releasepage(struct page * page,gfp_t mask)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
hfsplus_direct_IO(int rw,struct kiocb * iocb,const struct iovec * iov,loff_t offset,unsigned long nr_segs)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
hfsplus_writepages(struct address_space * mapping,struct writeback_control * wbc)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
hfsplus_file_lookup(struct inode * dir,struct dentry * dentry,unsigned int flags)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
hfsplus_get_perms(struct inode * inode,struct hfsplus_perm * perms,int dir)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
hfsplus_file_open(struct inode * inode,struct file * file)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
hfsplus_file_release(struct inode * inode,struct file * file)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
hfsplus_setattr(struct dentry * dentry,struct iattr * attr)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
hfsplus_file_fsync(struct file * file,loff_t start,loff_t end,int datasync)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
hfsplus_new_inode(struct super_block * sb,umode_t mode)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
hfsplus_delete_inode(struct inode * inode)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
hfsplus_inode_read_fork(struct inode * inode,struct hfsplus_fork_raw * fork)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
hfsplus_inode_write_fork(struct inode * inode,struct hfsplus_fork_raw * fork)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
hfsplus_cat_read_inode(struct inode * inode,struct hfs_find_data * fd)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
hfsplus_cat_write_inode(struct inode * inode)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