xref: /kernel/linux/linux-5.10/fs/hfsplus/inode.c (revision 8c2ecf20)
1// SPDX-License-Identifier: GPL-2.0
2/*
3 *  linux/fs/hfsplus/inode.c
4 *
5 * Copyright (C) 2001
6 * Brad Boyer (flar@allandria.com)
7 * (C) 2003 Ardis Technologies <roman@ardistech.com>
8 *
9 * Inode handling routines
10 */
11
12#include <linux/blkdev.h>
13#include <linux/mm.h>
14#include <linux/fs.h>
15#include <linux/pagemap.h>
16#include <linux/mpage.h>
17#include <linux/sched.h>
18#include <linux/cred.h>
19#include <linux/uio.h>
20
21#include "hfsplus_fs.h"
22#include "hfsplus_raw.h"
23#include "xattr.h"
24
25static int hfsplus_readpage(struct file *file, struct page *page)
26{
27	return block_read_full_page(page, hfsplus_get_block);
28}
29
30static int hfsplus_writepage(struct page *page, struct writeback_control *wbc)
31{
32	return block_write_full_page(page, hfsplus_get_block, wbc);
33}
34
35static void hfsplus_write_failed(struct address_space *mapping, loff_t to)
36{
37	struct inode *inode = mapping->host;
38
39	if (to > inode->i_size) {
40		truncate_pagecache(inode, inode->i_size);
41		hfsplus_file_truncate(inode);
42	}
43}
44
45static int hfsplus_write_begin(struct file *file, struct address_space *mapping,
46			loff_t pos, unsigned len, unsigned flags,
47			struct page **pagep, void **fsdata)
48{
49	int ret;
50
51	*pagep = NULL;
52	ret = cont_write_begin(file, mapping, pos, len, flags, pagep, fsdata,
53				hfsplus_get_block,
54				&HFSPLUS_I(mapping->host)->phys_size);
55	if (unlikely(ret))
56		hfsplus_write_failed(mapping, pos + len);
57
58	return ret;
59}
60
61static sector_t hfsplus_bmap(struct address_space *mapping, sector_t block)
62{
63	return generic_block_bmap(mapping, block, hfsplus_get_block);
64}
65
66static int hfsplus_releasepage(struct page *page, gfp_t mask)
67{
68	struct inode *inode = page->mapping->host;
69	struct super_block *sb = inode->i_sb;
70	struct hfs_btree *tree;
71	struct hfs_bnode *node;
72	u32 nidx;
73	int i, res = 1;
74
75	switch (inode->i_ino) {
76	case HFSPLUS_EXT_CNID:
77		tree = HFSPLUS_SB(sb)->ext_tree;
78		break;
79	case HFSPLUS_CAT_CNID:
80		tree = HFSPLUS_SB(sb)->cat_tree;
81		break;
82	case HFSPLUS_ATTR_CNID:
83		tree = HFSPLUS_SB(sb)->attr_tree;
84		break;
85	default:
86		BUG();
87		return 0;
88	}
89	if (!tree)
90		return 0;
91	if (tree->node_size >= PAGE_SIZE) {
92		nidx = page->index >>
93			(tree->node_size_shift - PAGE_SHIFT);
94		spin_lock(&tree->hash_lock);
95		node = hfs_bnode_findhash(tree, nidx);
96		if (!node)
97			;
98		else if (atomic_read(&node->refcnt))
99			res = 0;
100		if (res && node) {
101			hfs_bnode_unhash(node);
102			hfs_bnode_free(node);
103		}
104		spin_unlock(&tree->hash_lock);
105	} else {
106		nidx = page->index <<
107			(PAGE_SHIFT - tree->node_size_shift);
108		i = 1 << (PAGE_SHIFT - tree->node_size_shift);
109		spin_lock(&tree->hash_lock);
110		do {
111			node = hfs_bnode_findhash(tree, nidx++);
112			if (!node)
113				continue;
114			if (atomic_read(&node->refcnt)) {
115				res = 0;
116				break;
117			}
118			hfs_bnode_unhash(node);
119			hfs_bnode_free(node);
120		} while (--i && nidx < tree->node_count);
121		spin_unlock(&tree->hash_lock);
122	}
123	return res ? try_to_free_buffers(page) : 0;
124}
125
126static ssize_t hfsplus_direct_IO(struct kiocb *iocb, struct iov_iter *iter)
127{
128	struct file *file = iocb->ki_filp;
129	struct address_space *mapping = file->f_mapping;
130	struct inode *inode = mapping->host;
131	size_t count = iov_iter_count(iter);
132	ssize_t ret;
133
134	ret = blockdev_direct_IO(iocb, inode, iter, hfsplus_get_block);
135
136	/*
137	 * In case of error extending write may have instantiated a few
138	 * blocks outside i_size. Trim these off again.
139	 */
140	if (unlikely(iov_iter_rw(iter) == WRITE && ret < 0)) {
141		loff_t isize = i_size_read(inode);
142		loff_t end = iocb->ki_pos + count;
143
144		if (end > isize)
145			hfsplus_write_failed(mapping, end);
146	}
147
148	return ret;
149}
150
151static int hfsplus_writepages(struct address_space *mapping,
152			      struct writeback_control *wbc)
153{
154	return mpage_writepages(mapping, wbc, hfsplus_get_block);
155}
156
157const struct address_space_operations hfsplus_btree_aops = {
158	.readpage	= hfsplus_readpage,
159	.writepage	= hfsplus_writepage,
160	.write_begin	= hfsplus_write_begin,
161	.write_end	= generic_write_end,
162	.bmap		= hfsplus_bmap,
163	.releasepage	= hfsplus_releasepage,
164};
165
166const struct address_space_operations hfsplus_aops = {
167	.readpage	= hfsplus_readpage,
168	.writepage	= hfsplus_writepage,
169	.write_begin	= hfsplus_write_begin,
170	.write_end	= generic_write_end,
171	.bmap		= hfsplus_bmap,
172	.direct_IO	= hfsplus_direct_IO,
173	.writepages	= hfsplus_writepages,
174};
175
176const struct dentry_operations hfsplus_dentry_operations = {
177	.d_hash       = hfsplus_hash_dentry,
178	.d_compare    = hfsplus_compare_dentry,
179};
180
181static void hfsplus_get_perms(struct inode *inode,
182		struct hfsplus_perm *perms, int dir)
183{
184	struct hfsplus_sb_info *sbi = HFSPLUS_SB(inode->i_sb);
185	u16 mode;
186
187	mode = be16_to_cpu(perms->mode);
188
189	i_uid_write(inode, be32_to_cpu(perms->owner));
190	if ((test_bit(HFSPLUS_SB_UID, &sbi->flags)) || (!i_uid_read(inode) && !mode))
191		inode->i_uid = sbi->uid;
192
193	i_gid_write(inode, be32_to_cpu(perms->group));
194	if ((test_bit(HFSPLUS_SB_GID, &sbi->flags)) || (!i_gid_read(inode) && !mode))
195		inode->i_gid = sbi->gid;
196
197	if (dir) {
198		mode = mode ? (mode & S_IALLUGO) : (S_IRWXUGO & ~(sbi->umask));
199		mode |= S_IFDIR;
200	} else if (!mode)
201		mode = S_IFREG | ((S_IRUGO|S_IWUGO) & ~(sbi->umask));
202	inode->i_mode = mode;
203
204	HFSPLUS_I(inode)->userflags = perms->userflags;
205	if (perms->rootflags & HFSPLUS_FLG_IMMUTABLE)
206		inode->i_flags |= S_IMMUTABLE;
207	else
208		inode->i_flags &= ~S_IMMUTABLE;
209	if (perms->rootflags & HFSPLUS_FLG_APPEND)
210		inode->i_flags |= S_APPEND;
211	else
212		inode->i_flags &= ~S_APPEND;
213}
214
215static int hfsplus_file_open(struct inode *inode, struct file *file)
216{
217	if (HFSPLUS_IS_RSRC(inode))
218		inode = HFSPLUS_I(inode)->rsrc_inode;
219	if (!(file->f_flags & O_LARGEFILE) && i_size_read(inode) > MAX_NON_LFS)
220		return -EOVERFLOW;
221	atomic_inc(&HFSPLUS_I(inode)->opencnt);
222	return 0;
223}
224
225static int hfsplus_file_release(struct inode *inode, struct file *file)
226{
227	struct super_block *sb = inode->i_sb;
228
229	if (HFSPLUS_IS_RSRC(inode))
230		inode = HFSPLUS_I(inode)->rsrc_inode;
231	if (atomic_dec_and_test(&HFSPLUS_I(inode)->opencnt)) {
232		inode_lock(inode);
233		hfsplus_file_truncate(inode);
234		if (inode->i_flags & S_DEAD) {
235			hfsplus_delete_cat(inode->i_ino,
236					   HFSPLUS_SB(sb)->hidden_dir, NULL);
237			hfsplus_delete_inode(inode);
238		}
239		inode_unlock(inode);
240	}
241	return 0;
242}
243
244static int hfsplus_setattr(struct dentry *dentry, struct iattr *attr)
245{
246	struct inode *inode = d_inode(dentry);
247	int error;
248
249	error = setattr_prepare(dentry, attr);
250	if (error)
251		return error;
252
253	if ((attr->ia_valid & ATTR_SIZE) &&
254	    attr->ia_size != i_size_read(inode)) {
255		inode_dio_wait(inode);
256		if (attr->ia_size > inode->i_size) {
257			error = generic_cont_expand_simple(inode,
258							   attr->ia_size);
259			if (error)
260				return error;
261		}
262		truncate_setsize(inode, attr->ia_size);
263		hfsplus_file_truncate(inode);
264		inode->i_mtime = inode->i_ctime = current_time(inode);
265	}
266
267	setattr_copy(inode, attr);
268	mark_inode_dirty(inode);
269
270	return 0;
271}
272
273int hfsplus_getattr(const struct path *path, struct kstat *stat,
274		    u32 request_mask, unsigned int query_flags)
275{
276	struct inode *inode = d_inode(path->dentry);
277	struct hfsplus_inode_info *hip = HFSPLUS_I(inode);
278
279	if (inode->i_flags & S_APPEND)
280		stat->attributes |= STATX_ATTR_APPEND;
281	if (inode->i_flags & S_IMMUTABLE)
282		stat->attributes |= STATX_ATTR_IMMUTABLE;
283	if (hip->userflags & HFSPLUS_FLG_NODUMP)
284		stat->attributes |= STATX_ATTR_NODUMP;
285
286	stat->attributes_mask |= STATX_ATTR_APPEND | STATX_ATTR_IMMUTABLE |
287				 STATX_ATTR_NODUMP;
288
289	generic_fillattr(inode, stat);
290	return 0;
291}
292
293int hfsplus_file_fsync(struct file *file, loff_t start, loff_t end,
294		       int datasync)
295{
296	struct inode *inode = file->f_mapping->host;
297	struct hfsplus_inode_info *hip = HFSPLUS_I(inode);
298	struct hfsplus_sb_info *sbi = HFSPLUS_SB(inode->i_sb);
299	int error = 0, error2;
300
301	error = file_write_and_wait_range(file, start, end);
302	if (error)
303		return error;
304	inode_lock(inode);
305
306	/*
307	 * Sync inode metadata into the catalog and extent trees.
308	 */
309	sync_inode_metadata(inode, 1);
310
311	/*
312	 * And explicitly write out the btrees.
313	 */
314	if (test_and_clear_bit(HFSPLUS_I_CAT_DIRTY, &hip->flags))
315		error = filemap_write_and_wait(sbi->cat_tree->inode->i_mapping);
316
317	if (test_and_clear_bit(HFSPLUS_I_EXT_DIRTY, &hip->flags)) {
318		error2 =
319			filemap_write_and_wait(sbi->ext_tree->inode->i_mapping);
320		if (!error)
321			error = error2;
322	}
323
324	if (test_and_clear_bit(HFSPLUS_I_ATTR_DIRTY, &hip->flags)) {
325		if (sbi->attr_tree) {
326			error2 =
327				filemap_write_and_wait(
328					    sbi->attr_tree->inode->i_mapping);
329			if (!error)
330				error = error2;
331		} else {
332			pr_err("sync non-existent attributes tree\n");
333		}
334	}
335
336	if (test_and_clear_bit(HFSPLUS_I_ALLOC_DIRTY, &hip->flags)) {
337		error2 = filemap_write_and_wait(sbi->alloc_file->i_mapping);
338		if (!error)
339			error = error2;
340	}
341
342	if (!test_bit(HFSPLUS_SB_NOBARRIER, &sbi->flags))
343		blkdev_issue_flush(inode->i_sb->s_bdev, GFP_KERNEL);
344
345	inode_unlock(inode);
346
347	return error;
348}
349
350static const struct inode_operations hfsplus_file_inode_operations = {
351	.setattr	= hfsplus_setattr,
352	.getattr	= hfsplus_getattr,
353	.listxattr	= hfsplus_listxattr,
354};
355
356static const struct file_operations hfsplus_file_operations = {
357	.llseek		= generic_file_llseek,
358	.read_iter	= generic_file_read_iter,
359	.write_iter	= generic_file_write_iter,
360	.mmap		= generic_file_mmap,
361	.splice_read	= generic_file_splice_read,
362	.fsync		= hfsplus_file_fsync,
363	.open		= hfsplus_file_open,
364	.release	= hfsplus_file_release,
365	.unlocked_ioctl = hfsplus_ioctl,
366};
367
368struct inode *hfsplus_new_inode(struct super_block *sb, struct inode *dir,
369				umode_t mode)
370{
371	struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb);
372	struct inode *inode = new_inode(sb);
373	struct hfsplus_inode_info *hip;
374
375	if (!inode)
376		return NULL;
377
378	inode->i_ino = sbi->next_cnid++;
379	inode_init_owner(inode, dir, mode);
380	set_nlink(inode, 1);
381	inode->i_mtime = inode->i_atime = inode->i_ctime = current_time(inode);
382
383	hip = HFSPLUS_I(inode);
384	INIT_LIST_HEAD(&hip->open_dir_list);
385	spin_lock_init(&hip->open_dir_lock);
386	mutex_init(&hip->extents_lock);
387	atomic_set(&hip->opencnt, 0);
388	hip->extent_state = 0;
389	hip->flags = 0;
390	hip->userflags = 0;
391	hip->subfolders = 0;
392	memset(hip->first_extents, 0, sizeof(hfsplus_extent_rec));
393	memset(hip->cached_extents, 0, sizeof(hfsplus_extent_rec));
394	hip->alloc_blocks = 0;
395	hip->first_blocks = 0;
396	hip->cached_start = 0;
397	hip->cached_blocks = 0;
398	hip->phys_size = 0;
399	hip->fs_blocks = 0;
400	hip->rsrc_inode = NULL;
401	if (S_ISDIR(inode->i_mode)) {
402		inode->i_size = 2;
403		sbi->folder_count++;
404		inode->i_op = &hfsplus_dir_inode_operations;
405		inode->i_fop = &hfsplus_dir_operations;
406	} else if (S_ISREG(inode->i_mode)) {
407		sbi->file_count++;
408		inode->i_op = &hfsplus_file_inode_operations;
409		inode->i_fop = &hfsplus_file_operations;
410		inode->i_mapping->a_ops = &hfsplus_aops;
411		hip->clump_blocks = sbi->data_clump_blocks;
412	} else if (S_ISLNK(inode->i_mode)) {
413		sbi->file_count++;
414		inode->i_op = &page_symlink_inode_operations;
415		inode_nohighmem(inode);
416		inode->i_mapping->a_ops = &hfsplus_aops;
417		hip->clump_blocks = 1;
418	} else
419		sbi->file_count++;
420	insert_inode_hash(inode);
421	mark_inode_dirty(inode);
422	hfsplus_mark_mdb_dirty(sb);
423
424	return inode;
425}
426
427void hfsplus_delete_inode(struct inode *inode)
428{
429	struct super_block *sb = inode->i_sb;
430
431	if (S_ISDIR(inode->i_mode)) {
432		HFSPLUS_SB(sb)->folder_count--;
433		hfsplus_mark_mdb_dirty(sb);
434		return;
435	}
436	HFSPLUS_SB(sb)->file_count--;
437	if (S_ISREG(inode->i_mode)) {
438		if (!inode->i_nlink) {
439			inode->i_size = 0;
440			hfsplus_file_truncate(inode);
441		}
442	} else if (S_ISLNK(inode->i_mode)) {
443		inode->i_size = 0;
444		hfsplus_file_truncate(inode);
445	}
446	hfsplus_mark_mdb_dirty(sb);
447}
448
449void hfsplus_inode_read_fork(struct inode *inode, struct hfsplus_fork_raw *fork)
450{
451	struct super_block *sb = inode->i_sb;
452	struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb);
453	struct hfsplus_inode_info *hip = HFSPLUS_I(inode);
454	u32 count;
455	int i;
456
457	memcpy(&hip->first_extents, &fork->extents, sizeof(hfsplus_extent_rec));
458	for (count = 0, i = 0; i < 8; i++)
459		count += be32_to_cpu(fork->extents[i].block_count);
460	hip->first_blocks = count;
461	memset(hip->cached_extents, 0, sizeof(hfsplus_extent_rec));
462	hip->cached_start = 0;
463	hip->cached_blocks = 0;
464
465	hip->alloc_blocks = be32_to_cpu(fork->total_blocks);
466	hip->phys_size = inode->i_size = be64_to_cpu(fork->total_size);
467	hip->fs_blocks =
468		(inode->i_size + sb->s_blocksize - 1) >> sb->s_blocksize_bits;
469	inode_set_bytes(inode, hip->fs_blocks << sb->s_blocksize_bits);
470	hip->clump_blocks =
471		be32_to_cpu(fork->clump_size) >> sbi->alloc_blksz_shift;
472	if (!hip->clump_blocks) {
473		hip->clump_blocks = HFSPLUS_IS_RSRC(inode) ?
474			sbi->rsrc_clump_blocks :
475			sbi->data_clump_blocks;
476	}
477}
478
479void hfsplus_inode_write_fork(struct inode *inode,
480		struct hfsplus_fork_raw *fork)
481{
482	memcpy(&fork->extents, &HFSPLUS_I(inode)->first_extents,
483	       sizeof(hfsplus_extent_rec));
484	fork->total_size = cpu_to_be64(inode->i_size);
485	fork->total_blocks = cpu_to_be32(HFSPLUS_I(inode)->alloc_blocks);
486}
487
488int hfsplus_cat_read_inode(struct inode *inode, struct hfs_find_data *fd)
489{
490	hfsplus_cat_entry entry;
491	int res = 0;
492	u16 type;
493
494	type = hfs_bnode_read_u16(fd->bnode, fd->entryoffset);
495
496	HFSPLUS_I(inode)->linkid = 0;
497	if (type == HFSPLUS_FOLDER) {
498		struct hfsplus_cat_folder *folder = &entry.folder;
499
500		if (fd->entrylength < sizeof(struct hfsplus_cat_folder)) {
501			pr_err("bad catalog folder entry\n");
502			res = -EIO;
503			goto out;
504		}
505		hfs_bnode_read(fd->bnode, &entry, fd->entryoffset,
506					sizeof(struct hfsplus_cat_folder));
507		hfsplus_get_perms(inode, &folder->permissions, 1);
508		set_nlink(inode, 1);
509		inode->i_size = 2 + be32_to_cpu(folder->valence);
510		inode->i_atime = hfsp_mt2ut(folder->access_date);
511		inode->i_mtime = hfsp_mt2ut(folder->content_mod_date);
512		inode->i_ctime = hfsp_mt2ut(folder->attribute_mod_date);
513		HFSPLUS_I(inode)->create_date = folder->create_date;
514		HFSPLUS_I(inode)->fs_blocks = 0;
515		if (folder->flags & cpu_to_be16(HFSPLUS_HAS_FOLDER_COUNT)) {
516			HFSPLUS_I(inode)->subfolders =
517				be32_to_cpu(folder->subfolders);
518		}
519		inode->i_op = &hfsplus_dir_inode_operations;
520		inode->i_fop = &hfsplus_dir_operations;
521	} else if (type == HFSPLUS_FILE) {
522		struct hfsplus_cat_file *file = &entry.file;
523
524		if (fd->entrylength < sizeof(struct hfsplus_cat_file)) {
525			pr_err("bad catalog file entry\n");
526			res = -EIO;
527			goto out;
528		}
529		hfs_bnode_read(fd->bnode, &entry, fd->entryoffset,
530					sizeof(struct hfsplus_cat_file));
531
532		hfsplus_inode_read_fork(inode, HFSPLUS_IS_RSRC(inode) ?
533					&file->rsrc_fork : &file->data_fork);
534		hfsplus_get_perms(inode, &file->permissions, 0);
535		set_nlink(inode, 1);
536		if (S_ISREG(inode->i_mode)) {
537			if (file->permissions.dev)
538				set_nlink(inode,
539					  be32_to_cpu(file->permissions.dev));
540			inode->i_op = &hfsplus_file_inode_operations;
541			inode->i_fop = &hfsplus_file_operations;
542			inode->i_mapping->a_ops = &hfsplus_aops;
543		} else if (S_ISLNK(inode->i_mode)) {
544			inode->i_op = &page_symlink_inode_operations;
545			inode_nohighmem(inode);
546			inode->i_mapping->a_ops = &hfsplus_aops;
547		} else {
548			init_special_inode(inode, inode->i_mode,
549					   be32_to_cpu(file->permissions.dev));
550		}
551		inode->i_atime = hfsp_mt2ut(file->access_date);
552		inode->i_mtime = hfsp_mt2ut(file->content_mod_date);
553		inode->i_ctime = hfsp_mt2ut(file->attribute_mod_date);
554		HFSPLUS_I(inode)->create_date = file->create_date;
555	} else {
556		pr_err("bad catalog entry used to create inode\n");
557		res = -EIO;
558	}
559out:
560	return res;
561}
562
563int hfsplus_cat_write_inode(struct inode *inode)
564{
565	struct inode *main_inode = inode;
566	struct hfs_find_data fd;
567	hfsplus_cat_entry entry;
568	int res = 0;
569
570	if (HFSPLUS_IS_RSRC(inode))
571		main_inode = HFSPLUS_I(inode)->rsrc_inode;
572
573	if (!main_inode->i_nlink)
574		return 0;
575
576	if (hfs_find_init(HFSPLUS_SB(main_inode->i_sb)->cat_tree, &fd))
577		/* panic? */
578		return -EIO;
579
580	if (hfsplus_find_cat(main_inode->i_sb, main_inode->i_ino, &fd))
581		/* panic? */
582		goto out;
583
584	if (S_ISDIR(main_inode->i_mode)) {
585		struct hfsplus_cat_folder *folder = &entry.folder;
586
587		if (fd.entrylength < sizeof(struct hfsplus_cat_folder)) {
588			pr_err("bad catalog folder entry\n");
589			res = -EIO;
590			goto out;
591		}
592		hfs_bnode_read(fd.bnode, &entry, fd.entryoffset,
593					sizeof(struct hfsplus_cat_folder));
594		/* simple node checks? */
595		hfsplus_cat_set_perms(inode, &folder->permissions);
596		folder->access_date = hfsp_ut2mt(inode->i_atime);
597		folder->content_mod_date = hfsp_ut2mt(inode->i_mtime);
598		folder->attribute_mod_date = hfsp_ut2mt(inode->i_ctime);
599		folder->valence = cpu_to_be32(inode->i_size - 2);
600		if (folder->flags & cpu_to_be16(HFSPLUS_HAS_FOLDER_COUNT)) {
601			folder->subfolders =
602				cpu_to_be32(HFSPLUS_I(inode)->subfolders);
603		}
604		hfs_bnode_write(fd.bnode, &entry, fd.entryoffset,
605					 sizeof(struct hfsplus_cat_folder));
606	} else if (HFSPLUS_IS_RSRC(inode)) {
607		struct hfsplus_cat_file *file = &entry.file;
608		hfs_bnode_read(fd.bnode, &entry, fd.entryoffset,
609			       sizeof(struct hfsplus_cat_file));
610		hfsplus_inode_write_fork(inode, &file->rsrc_fork);
611		hfs_bnode_write(fd.bnode, &entry, fd.entryoffset,
612				sizeof(struct hfsplus_cat_file));
613	} else {
614		struct hfsplus_cat_file *file = &entry.file;
615
616		if (fd.entrylength < sizeof(struct hfsplus_cat_file)) {
617			pr_err("bad catalog file entry\n");
618			res = -EIO;
619			goto out;
620		}
621		hfs_bnode_read(fd.bnode, &entry, fd.entryoffset,
622					sizeof(struct hfsplus_cat_file));
623		hfsplus_inode_write_fork(inode, &file->data_fork);
624		hfsplus_cat_set_perms(inode, &file->permissions);
625		if (HFSPLUS_FLG_IMMUTABLE &
626				(file->permissions.rootflags |
627					file->permissions.userflags))
628			file->flags |= cpu_to_be16(HFSPLUS_FILE_LOCKED);
629		else
630			file->flags &= cpu_to_be16(~HFSPLUS_FILE_LOCKED);
631		file->access_date = hfsp_ut2mt(inode->i_atime);
632		file->content_mod_date = hfsp_ut2mt(inode->i_mtime);
633		file->attribute_mod_date = hfsp_ut2mt(inode->i_ctime);
634		hfs_bnode_write(fd.bnode, &entry, fd.entryoffset,
635					 sizeof(struct hfsplus_cat_file));
636	}
637
638	set_bit(HFSPLUS_I_CAT_DIRTY, &HFSPLUS_I(inode)->flags);
639out:
640	hfs_find_exit(&fd);
641	return res;
642}
643