xref: /openbmc/linux/fs/hfsplus/inode.c (revision d0b73b48)
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 
18 #include "hfsplus_fs.h"
19 #include "hfsplus_raw.h"
20 
21 static int hfsplus_readpage(struct file *file, struct page *page)
22 {
23 	return block_read_full_page(page, hfsplus_get_block);
24 }
25 
26 static int hfsplus_writepage(struct page *page, struct writeback_control *wbc)
27 {
28 	return block_write_full_page(page, hfsplus_get_block, wbc);
29 }
30 
31 static void hfsplus_write_failed(struct address_space *mapping, loff_t to)
32 {
33 	struct inode *inode = mapping->host;
34 
35 	if (to > inode->i_size) {
36 		truncate_pagecache(inode, to, inode->i_size);
37 		hfsplus_file_truncate(inode);
38 	}
39 }
40 
41 static int hfsplus_write_begin(struct file *file, struct address_space *mapping,
42 			loff_t pos, unsigned len, unsigned flags,
43 			struct page **pagep, void **fsdata)
44 {
45 	int ret;
46 
47 	*pagep = NULL;
48 	ret = cont_write_begin(file, mapping, pos, len, flags, pagep, fsdata,
49 				hfsplus_get_block,
50 				&HFSPLUS_I(mapping->host)->phys_size);
51 	if (unlikely(ret))
52 		hfsplus_write_failed(mapping, pos + len);
53 
54 	return ret;
55 }
56 
57 static sector_t hfsplus_bmap(struct address_space *mapping, sector_t block)
58 {
59 	return generic_block_bmap(mapping, block, hfsplus_get_block);
60 }
61 
62 static int hfsplus_releasepage(struct page *page, gfp_t mask)
63 {
64 	struct inode *inode = page->mapping->host;
65 	struct super_block *sb = inode->i_sb;
66 	struct hfs_btree *tree;
67 	struct hfs_bnode *node;
68 	u32 nidx;
69 	int i, res = 1;
70 
71 	switch (inode->i_ino) {
72 	case HFSPLUS_EXT_CNID:
73 		tree = HFSPLUS_SB(sb)->ext_tree;
74 		break;
75 	case HFSPLUS_CAT_CNID:
76 		tree = HFSPLUS_SB(sb)->cat_tree;
77 		break;
78 	case HFSPLUS_ATTR_CNID:
79 		tree = HFSPLUS_SB(sb)->attr_tree;
80 		break;
81 	default:
82 		BUG();
83 		return 0;
84 	}
85 	if (!tree)
86 		return 0;
87 	if (tree->node_size >= PAGE_CACHE_SIZE) {
88 		nidx = page->index >>
89 			(tree->node_size_shift - PAGE_CACHE_SHIFT);
90 		spin_lock(&tree->hash_lock);
91 		node = hfs_bnode_findhash(tree, nidx);
92 		if (!node)
93 			;
94 		else if (atomic_read(&node->refcnt))
95 			res = 0;
96 		if (res && node) {
97 			hfs_bnode_unhash(node);
98 			hfs_bnode_free(node);
99 		}
100 		spin_unlock(&tree->hash_lock);
101 	} else {
102 		nidx = page->index <<
103 			(PAGE_CACHE_SHIFT - tree->node_size_shift);
104 		i = 1 << (PAGE_CACHE_SHIFT - tree->node_size_shift);
105 		spin_lock(&tree->hash_lock);
106 		do {
107 			node = hfs_bnode_findhash(tree, nidx++);
108 			if (!node)
109 				continue;
110 			if (atomic_read(&node->refcnt)) {
111 				res = 0;
112 				break;
113 			}
114 			hfs_bnode_unhash(node);
115 			hfs_bnode_free(node);
116 		} while (--i && nidx < tree->node_count);
117 		spin_unlock(&tree->hash_lock);
118 	}
119 	return res ? try_to_free_buffers(page) : 0;
120 }
121 
122 static ssize_t hfsplus_direct_IO(int rw, struct kiocb *iocb,
123 		const struct iovec *iov, loff_t offset, unsigned long nr_segs)
124 {
125 	struct file *file = iocb->ki_filp;
126 	struct address_space *mapping = file->f_mapping;
127 	struct inode *inode = file->f_path.dentry->d_inode->i_mapping->host;
128 	ssize_t ret;
129 
130 	ret = blockdev_direct_IO(rw, iocb, inode, iov, offset, nr_segs,
131 				 hfsplus_get_block);
132 
133 	/*
134 	 * In case of error extending write may have instantiated a few
135 	 * blocks outside i_size. Trim these off again.
136 	 */
137 	if (unlikely((rw & WRITE) && ret < 0)) {
138 		loff_t isize = i_size_read(inode);
139 		loff_t end = offset + iov_length(iov, nr_segs);
140 
141 		if (end > isize)
142 			hfsplus_write_failed(mapping, end);
143 	}
144 
145 	return ret;
146 }
147 
148 static int hfsplus_writepages(struct address_space *mapping,
149 			      struct writeback_control *wbc)
150 {
151 	return mpage_writepages(mapping, wbc, hfsplus_get_block);
152 }
153 
154 const struct address_space_operations hfsplus_btree_aops = {
155 	.readpage	= hfsplus_readpage,
156 	.writepage	= hfsplus_writepage,
157 	.write_begin	= hfsplus_write_begin,
158 	.write_end	= generic_write_end,
159 	.bmap		= hfsplus_bmap,
160 	.releasepage	= hfsplus_releasepage,
161 };
162 
163 const struct address_space_operations hfsplus_aops = {
164 	.readpage	= hfsplus_readpage,
165 	.writepage	= hfsplus_writepage,
166 	.write_begin	= hfsplus_write_begin,
167 	.write_end	= generic_write_end,
168 	.bmap		= hfsplus_bmap,
169 	.direct_IO	= hfsplus_direct_IO,
170 	.writepages	= hfsplus_writepages,
171 };
172 
173 const struct dentry_operations hfsplus_dentry_operations = {
174 	.d_hash       = hfsplus_hash_dentry,
175 	.d_compare    = hfsplus_compare_dentry,
176 };
177 
178 static struct dentry *hfsplus_file_lookup(struct inode *dir,
179 		struct dentry *dentry, unsigned int flags)
180 {
181 	struct hfs_find_data fd;
182 	struct super_block *sb = dir->i_sb;
183 	struct inode *inode = NULL;
184 	struct hfsplus_inode_info *hip;
185 	int err;
186 
187 	if (HFSPLUS_IS_RSRC(dir) || strcmp(dentry->d_name.name, "rsrc"))
188 		goto out;
189 
190 	inode = HFSPLUS_I(dir)->rsrc_inode;
191 	if (inode)
192 		goto out;
193 
194 	inode = new_inode(sb);
195 	if (!inode)
196 		return ERR_PTR(-ENOMEM);
197 
198 	hip = HFSPLUS_I(inode);
199 	inode->i_ino = dir->i_ino;
200 	INIT_LIST_HEAD(&hip->open_dir_list);
201 	mutex_init(&hip->extents_lock);
202 	hip->extent_state = 0;
203 	hip->flags = 0;
204 	hip->userflags = 0;
205 	set_bit(HFSPLUS_I_RSRC, &hip->flags);
206 
207 	err = hfs_find_init(HFSPLUS_SB(sb)->cat_tree, &fd);
208 	if (!err) {
209 		err = hfsplus_find_cat(sb, dir->i_ino, &fd);
210 		if (!err)
211 			err = hfsplus_cat_read_inode(inode, &fd);
212 		hfs_find_exit(&fd);
213 	}
214 	if (err) {
215 		iput(inode);
216 		return ERR_PTR(err);
217 	}
218 	hip->rsrc_inode = dir;
219 	HFSPLUS_I(dir)->rsrc_inode = inode;
220 	igrab(dir);
221 
222 	/*
223 	 * __mark_inode_dirty expects inodes to be hashed.  Since we don't
224 	 * want resource fork inodes in the regular inode space, we make them
225 	 * appear hashed, but do not put on any lists.  hlist_del()
226 	 * will work fine and require no locking.
227 	 */
228 	hlist_add_fake(&inode->i_hash);
229 
230 	mark_inode_dirty(inode);
231 out:
232 	d_add(dentry, inode);
233 	return NULL;
234 }
235 
236 static void hfsplus_get_perms(struct inode *inode,
237 		struct hfsplus_perm *perms, int dir)
238 {
239 	struct hfsplus_sb_info *sbi = HFSPLUS_SB(inode->i_sb);
240 	u16 mode;
241 
242 	mode = be16_to_cpu(perms->mode);
243 
244 	i_uid_write(inode, be32_to_cpu(perms->owner));
245 	if (!i_uid_read(inode) && !mode)
246 		inode->i_uid = sbi->uid;
247 
248 	i_gid_write(inode, be32_to_cpu(perms->group));
249 	if (!i_gid_read(inode) && !mode)
250 		inode->i_gid = sbi->gid;
251 
252 	if (dir) {
253 		mode = mode ? (mode & S_IALLUGO) : (S_IRWXUGO & ~(sbi->umask));
254 		mode |= S_IFDIR;
255 	} else if (!mode)
256 		mode = S_IFREG | ((S_IRUGO|S_IWUGO) & ~(sbi->umask));
257 	inode->i_mode = mode;
258 
259 	HFSPLUS_I(inode)->userflags = perms->userflags;
260 	if (perms->rootflags & HFSPLUS_FLG_IMMUTABLE)
261 		inode->i_flags |= S_IMMUTABLE;
262 	else
263 		inode->i_flags &= ~S_IMMUTABLE;
264 	if (perms->rootflags & HFSPLUS_FLG_APPEND)
265 		inode->i_flags |= S_APPEND;
266 	else
267 		inode->i_flags &= ~S_APPEND;
268 }
269 
270 static int hfsplus_file_open(struct inode *inode, struct file *file)
271 {
272 	if (HFSPLUS_IS_RSRC(inode))
273 		inode = HFSPLUS_I(inode)->rsrc_inode;
274 	if (!(file->f_flags & O_LARGEFILE) && i_size_read(inode) > MAX_NON_LFS)
275 		return -EOVERFLOW;
276 	atomic_inc(&HFSPLUS_I(inode)->opencnt);
277 	return 0;
278 }
279 
280 static int hfsplus_file_release(struct inode *inode, struct file *file)
281 {
282 	struct super_block *sb = inode->i_sb;
283 
284 	if (HFSPLUS_IS_RSRC(inode))
285 		inode = HFSPLUS_I(inode)->rsrc_inode;
286 	if (atomic_dec_and_test(&HFSPLUS_I(inode)->opencnt)) {
287 		mutex_lock(&inode->i_mutex);
288 		hfsplus_file_truncate(inode);
289 		if (inode->i_flags & S_DEAD) {
290 			hfsplus_delete_cat(inode->i_ino,
291 					   HFSPLUS_SB(sb)->hidden_dir, NULL);
292 			hfsplus_delete_inode(inode);
293 		}
294 		mutex_unlock(&inode->i_mutex);
295 	}
296 	return 0;
297 }
298 
299 static int hfsplus_setattr(struct dentry *dentry, struct iattr *attr)
300 {
301 	struct inode *inode = dentry->d_inode;
302 	int error;
303 
304 	error = inode_change_ok(inode, attr);
305 	if (error)
306 		return error;
307 
308 	if ((attr->ia_valid & ATTR_SIZE) &&
309 	    attr->ia_size != i_size_read(inode)) {
310 		inode_dio_wait(inode);
311 		truncate_setsize(inode, attr->ia_size);
312 		hfsplus_file_truncate(inode);
313 	}
314 
315 	setattr_copy(inode, attr);
316 	mark_inode_dirty(inode);
317 	return 0;
318 }
319 
320 int hfsplus_file_fsync(struct file *file, loff_t start, loff_t end,
321 		       int datasync)
322 {
323 	struct inode *inode = file->f_mapping->host;
324 	struct hfsplus_inode_info *hip = HFSPLUS_I(inode);
325 	struct hfsplus_sb_info *sbi = HFSPLUS_SB(inode->i_sb);
326 	int error = 0, error2;
327 
328 	error = filemap_write_and_wait_range(inode->i_mapping, start, end);
329 	if (error)
330 		return error;
331 	mutex_lock(&inode->i_mutex);
332 
333 	/*
334 	 * Sync inode metadata into the catalog and extent trees.
335 	 */
336 	sync_inode_metadata(inode, 1);
337 
338 	/*
339 	 * And explicitly write out the btrees.
340 	 */
341 	if (test_and_clear_bit(HFSPLUS_I_CAT_DIRTY, &hip->flags))
342 		error = filemap_write_and_wait(sbi->cat_tree->inode->i_mapping);
343 
344 	if (test_and_clear_bit(HFSPLUS_I_EXT_DIRTY, &hip->flags)) {
345 		error2 =
346 			filemap_write_and_wait(sbi->ext_tree->inode->i_mapping);
347 		if (!error)
348 			error = error2;
349 	}
350 
351 	if (test_and_clear_bit(HFSPLUS_I_ALLOC_DIRTY, &hip->flags)) {
352 		error2 = filemap_write_and_wait(sbi->alloc_file->i_mapping);
353 		if (!error)
354 			error = error2;
355 	}
356 
357 	if (!test_bit(HFSPLUS_SB_NOBARRIER, &sbi->flags))
358 		blkdev_issue_flush(inode->i_sb->s_bdev, GFP_KERNEL, NULL);
359 
360 	mutex_unlock(&inode->i_mutex);
361 
362 	return error;
363 }
364 
365 static const struct inode_operations hfsplus_file_inode_operations = {
366 	.lookup		= hfsplus_file_lookup,
367 	.setattr	= hfsplus_setattr,
368 	.setxattr	= hfsplus_setxattr,
369 	.getxattr	= hfsplus_getxattr,
370 	.listxattr	= hfsplus_listxattr,
371 };
372 
373 static const struct file_operations hfsplus_file_operations = {
374 	.llseek		= generic_file_llseek,
375 	.read		= do_sync_read,
376 	.aio_read	= generic_file_aio_read,
377 	.write		= do_sync_write,
378 	.aio_write	= generic_file_aio_write,
379 	.mmap		= generic_file_mmap,
380 	.splice_read	= generic_file_splice_read,
381 	.fsync		= hfsplus_file_fsync,
382 	.open		= hfsplus_file_open,
383 	.release	= hfsplus_file_release,
384 	.unlocked_ioctl = hfsplus_ioctl,
385 };
386 
387 struct inode *hfsplus_new_inode(struct super_block *sb, umode_t mode)
388 {
389 	struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb);
390 	struct inode *inode = new_inode(sb);
391 	struct hfsplus_inode_info *hip;
392 
393 	if (!inode)
394 		return NULL;
395 
396 	inode->i_ino = sbi->next_cnid++;
397 	inode->i_mode = mode;
398 	inode->i_uid = current_fsuid();
399 	inode->i_gid = current_fsgid();
400 	set_nlink(inode, 1);
401 	inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME_SEC;
402 
403 	hip = HFSPLUS_I(inode);
404 	INIT_LIST_HEAD(&hip->open_dir_list);
405 	mutex_init(&hip->extents_lock);
406 	atomic_set(&hip->opencnt, 0);
407 	hip->extent_state = 0;
408 	hip->flags = 0;
409 	hip->userflags = 0;
410 	memset(hip->first_extents, 0, sizeof(hfsplus_extent_rec));
411 	memset(hip->cached_extents, 0, sizeof(hfsplus_extent_rec));
412 	hip->alloc_blocks = 0;
413 	hip->first_blocks = 0;
414 	hip->cached_start = 0;
415 	hip->cached_blocks = 0;
416 	hip->phys_size = 0;
417 	hip->fs_blocks = 0;
418 	hip->rsrc_inode = NULL;
419 	if (S_ISDIR(inode->i_mode)) {
420 		inode->i_size = 2;
421 		sbi->folder_count++;
422 		inode->i_op = &hfsplus_dir_inode_operations;
423 		inode->i_fop = &hfsplus_dir_operations;
424 	} else if (S_ISREG(inode->i_mode)) {
425 		sbi->file_count++;
426 		inode->i_op = &hfsplus_file_inode_operations;
427 		inode->i_fop = &hfsplus_file_operations;
428 		inode->i_mapping->a_ops = &hfsplus_aops;
429 		hip->clump_blocks = sbi->data_clump_blocks;
430 	} else if (S_ISLNK(inode->i_mode)) {
431 		sbi->file_count++;
432 		inode->i_op = &page_symlink_inode_operations;
433 		inode->i_mapping->a_ops = &hfsplus_aops;
434 		hip->clump_blocks = 1;
435 	} else
436 		sbi->file_count++;
437 	insert_inode_hash(inode);
438 	mark_inode_dirty(inode);
439 	hfsplus_mark_mdb_dirty(sb);
440 
441 	return inode;
442 }
443 
444 void hfsplus_delete_inode(struct inode *inode)
445 {
446 	struct super_block *sb = inode->i_sb;
447 
448 	if (S_ISDIR(inode->i_mode)) {
449 		HFSPLUS_SB(sb)->folder_count--;
450 		hfsplus_mark_mdb_dirty(sb);
451 		return;
452 	}
453 	HFSPLUS_SB(sb)->file_count--;
454 	if (S_ISREG(inode->i_mode)) {
455 		if (!inode->i_nlink) {
456 			inode->i_size = 0;
457 			hfsplus_file_truncate(inode);
458 		}
459 	} else if (S_ISLNK(inode->i_mode)) {
460 		inode->i_size = 0;
461 		hfsplus_file_truncate(inode);
462 	}
463 	hfsplus_mark_mdb_dirty(sb);
464 }
465 
466 void hfsplus_inode_read_fork(struct inode *inode, struct hfsplus_fork_raw *fork)
467 {
468 	struct super_block *sb = inode->i_sb;
469 	struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb);
470 	struct hfsplus_inode_info *hip = HFSPLUS_I(inode);
471 	u32 count;
472 	int i;
473 
474 	memcpy(&hip->first_extents, &fork->extents, sizeof(hfsplus_extent_rec));
475 	for (count = 0, i = 0; i < 8; i++)
476 		count += be32_to_cpu(fork->extents[i].block_count);
477 	hip->first_blocks = count;
478 	memset(hip->cached_extents, 0, sizeof(hfsplus_extent_rec));
479 	hip->cached_start = 0;
480 	hip->cached_blocks = 0;
481 
482 	hip->alloc_blocks = be32_to_cpu(fork->total_blocks);
483 	hip->phys_size = inode->i_size = be64_to_cpu(fork->total_size);
484 	hip->fs_blocks =
485 		(inode->i_size + sb->s_blocksize - 1) >> sb->s_blocksize_bits;
486 	inode_set_bytes(inode, hip->fs_blocks << sb->s_blocksize_bits);
487 	hip->clump_blocks =
488 		be32_to_cpu(fork->clump_size) >> sbi->alloc_blksz_shift;
489 	if (!hip->clump_blocks) {
490 		hip->clump_blocks = HFSPLUS_IS_RSRC(inode) ?
491 			sbi->rsrc_clump_blocks :
492 			sbi->data_clump_blocks;
493 	}
494 }
495 
496 void hfsplus_inode_write_fork(struct inode *inode,
497 		struct hfsplus_fork_raw *fork)
498 {
499 	memcpy(&fork->extents, &HFSPLUS_I(inode)->first_extents,
500 	       sizeof(hfsplus_extent_rec));
501 	fork->total_size = cpu_to_be64(inode->i_size);
502 	fork->total_blocks = cpu_to_be32(HFSPLUS_I(inode)->alloc_blocks);
503 }
504 
505 int hfsplus_cat_read_inode(struct inode *inode, struct hfs_find_data *fd)
506 {
507 	hfsplus_cat_entry entry;
508 	int res = 0;
509 	u16 type;
510 
511 	type = hfs_bnode_read_u16(fd->bnode, fd->entryoffset);
512 
513 	HFSPLUS_I(inode)->linkid = 0;
514 	if (type == HFSPLUS_FOLDER) {
515 		struct hfsplus_cat_folder *folder = &entry.folder;
516 
517 		if (fd->entrylength < sizeof(struct hfsplus_cat_folder))
518 			/* panic? */;
519 		hfs_bnode_read(fd->bnode, &entry, fd->entryoffset,
520 					sizeof(struct hfsplus_cat_folder));
521 		hfsplus_get_perms(inode, &folder->permissions, 1);
522 		set_nlink(inode, 1);
523 		inode->i_size = 2 + be32_to_cpu(folder->valence);
524 		inode->i_atime = hfsp_mt2ut(folder->access_date);
525 		inode->i_mtime = hfsp_mt2ut(folder->content_mod_date);
526 		inode->i_ctime = hfsp_mt2ut(folder->attribute_mod_date);
527 		HFSPLUS_I(inode)->create_date = folder->create_date;
528 		HFSPLUS_I(inode)->fs_blocks = 0;
529 		inode->i_op = &hfsplus_dir_inode_operations;
530 		inode->i_fop = &hfsplus_dir_operations;
531 	} else if (type == HFSPLUS_FILE) {
532 		struct hfsplus_cat_file *file = &entry.file;
533 
534 		if (fd->entrylength < sizeof(struct hfsplus_cat_file))
535 			/* panic? */;
536 		hfs_bnode_read(fd->bnode, &entry, fd->entryoffset,
537 					sizeof(struct hfsplus_cat_file));
538 
539 		hfsplus_inode_read_fork(inode, HFSPLUS_IS_RSRC(inode) ?
540 					&file->rsrc_fork : &file->data_fork);
541 		hfsplus_get_perms(inode, &file->permissions, 0);
542 		set_nlink(inode, 1);
543 		if (S_ISREG(inode->i_mode)) {
544 			if (file->permissions.dev)
545 				set_nlink(inode,
546 					  be32_to_cpu(file->permissions.dev));
547 			inode->i_op = &hfsplus_file_inode_operations;
548 			inode->i_fop = &hfsplus_file_operations;
549 			inode->i_mapping->a_ops = &hfsplus_aops;
550 		} else if (S_ISLNK(inode->i_mode)) {
551 			inode->i_op = &page_symlink_inode_operations;
552 			inode->i_mapping->a_ops = &hfsplus_aops;
553 		} else {
554 			init_special_inode(inode, inode->i_mode,
555 					   be32_to_cpu(file->permissions.dev));
556 		}
557 		inode->i_atime = hfsp_mt2ut(file->access_date);
558 		inode->i_mtime = hfsp_mt2ut(file->content_mod_date);
559 		inode->i_ctime = hfsp_mt2ut(file->attribute_mod_date);
560 		HFSPLUS_I(inode)->create_date = file->create_date;
561 	} else {
562 		printk(KERN_ERR "hfs: bad catalog entry used to create inode\n");
563 		res = -EIO;
564 	}
565 	return res;
566 }
567 
568 int hfsplus_cat_write_inode(struct inode *inode)
569 {
570 	struct inode *main_inode = inode;
571 	struct hfs_find_data fd;
572 	hfsplus_cat_entry entry;
573 
574 	if (HFSPLUS_IS_RSRC(inode))
575 		main_inode = HFSPLUS_I(inode)->rsrc_inode;
576 
577 	if (!main_inode->i_nlink)
578 		return 0;
579 
580 	if (hfs_find_init(HFSPLUS_SB(main_inode->i_sb)->cat_tree, &fd))
581 		/* panic? */
582 		return -EIO;
583 
584 	if (hfsplus_find_cat(main_inode->i_sb, main_inode->i_ino, &fd))
585 		/* panic? */
586 		goto out;
587 
588 	if (S_ISDIR(main_inode->i_mode)) {
589 		struct hfsplus_cat_folder *folder = &entry.folder;
590 
591 		if (fd.entrylength < sizeof(struct hfsplus_cat_folder))
592 			/* panic? */;
593 		hfs_bnode_read(fd.bnode, &entry, fd.entryoffset,
594 					sizeof(struct hfsplus_cat_folder));
595 		/* simple node checks? */
596 		hfsplus_cat_set_perms(inode, &folder->permissions);
597 		folder->access_date = hfsp_ut2mt(inode->i_atime);
598 		folder->content_mod_date = hfsp_ut2mt(inode->i_mtime);
599 		folder->attribute_mod_date = hfsp_ut2mt(inode->i_ctime);
600 		folder->valence = cpu_to_be32(inode->i_size - 2);
601 		hfs_bnode_write(fd.bnode, &entry, fd.entryoffset,
602 					 sizeof(struct hfsplus_cat_folder));
603 	} else if (HFSPLUS_IS_RSRC(inode)) {
604 		struct hfsplus_cat_file *file = &entry.file;
605 		hfs_bnode_read(fd.bnode, &entry, fd.entryoffset,
606 			       sizeof(struct hfsplus_cat_file));
607 		hfsplus_inode_write_fork(inode, &file->rsrc_fork);
608 		hfs_bnode_write(fd.bnode, &entry, fd.entryoffset,
609 				sizeof(struct hfsplus_cat_file));
610 	} else {
611 		struct hfsplus_cat_file *file = &entry.file;
612 
613 		if (fd.entrylength < sizeof(struct hfsplus_cat_file))
614 			/* panic? */;
615 		hfs_bnode_read(fd.bnode, &entry, fd.entryoffset,
616 					sizeof(struct hfsplus_cat_file));
617 		hfsplus_inode_write_fork(inode, &file->data_fork);
618 		hfsplus_cat_set_perms(inode, &file->permissions);
619 		if (HFSPLUS_FLG_IMMUTABLE &
620 				(file->permissions.rootflags |
621 					file->permissions.userflags))
622 			file->flags |= cpu_to_be16(HFSPLUS_FILE_LOCKED);
623 		else
624 			file->flags &= cpu_to_be16(~HFSPLUS_FILE_LOCKED);
625 		file->access_date = hfsp_ut2mt(inode->i_atime);
626 		file->content_mod_date = hfsp_ut2mt(inode->i_mtime);
627 		file->attribute_mod_date = hfsp_ut2mt(inode->i_ctime);
628 		hfs_bnode_write(fd.bnode, &entry, fd.entryoffset,
629 					 sizeof(struct hfsplus_cat_file));
630 	}
631 
632 	set_bit(HFSPLUS_I_CAT_DIRTY, &HFSPLUS_I(inode)->flags);
633 out:
634 	hfs_find_exit(&fd);
635 	return 0;
636 }
637