Commit | Line | Data |
---|---|---|
1da177e4 LT |
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/mm.h> | |
12 | #include <linux/fs.h> | |
13 | #include <linux/pagemap.h> | |
1da177e4 | 14 | #include <linux/mpage.h> |
e8edc6e0 | 15 | #include <linux/sched.h> |
1da177e4 LT |
16 | |
17 | #include "hfsplus_fs.h" | |
18 | #include "hfsplus_raw.h" | |
19 | ||
20 | static int hfsplus_readpage(struct file *file, struct page *page) | |
21 | { | |
1da177e4 LT |
22 | return block_read_full_page(page, hfsplus_get_block); |
23 | } | |
24 | ||
25 | static int hfsplus_writepage(struct page *page, struct writeback_control *wbc) | |
26 | { | |
1da177e4 LT |
27 | return block_write_full_page(page, hfsplus_get_block, wbc); |
28 | } | |
29 | ||
7c0efc62 NP |
30 | static int hfsplus_write_begin(struct file *file, struct address_space *mapping, |
31 | loff_t pos, unsigned len, unsigned flags, | |
32 | struct page **pagep, void **fsdata) | |
1da177e4 | 33 | { |
7c0efc62 NP |
34 | *pagep = NULL; |
35 | return cont_write_begin(file, mapping, pos, len, flags, pagep, fsdata, | |
36 | hfsplus_get_block, | |
37 | &HFSPLUS_I(mapping->host).phys_size); | |
1da177e4 LT |
38 | } |
39 | ||
40 | static sector_t hfsplus_bmap(struct address_space *mapping, sector_t block) | |
41 | { | |
42 | return generic_block_bmap(mapping, block, hfsplus_get_block); | |
43 | } | |
44 | ||
27496a8c | 45 | static int hfsplus_releasepage(struct page *page, gfp_t mask) |
1da177e4 LT |
46 | { |
47 | struct inode *inode = page->mapping->host; | |
48 | struct super_block *sb = inode->i_sb; | |
49 | struct hfs_btree *tree; | |
50 | struct hfs_bnode *node; | |
51 | u32 nidx; | |
52 | int i, res = 1; | |
53 | ||
54 | switch (inode->i_ino) { | |
55 | case HFSPLUS_EXT_CNID: | |
56 | tree = HFSPLUS_SB(sb).ext_tree; | |
57 | break; | |
58 | case HFSPLUS_CAT_CNID: | |
59 | tree = HFSPLUS_SB(sb).cat_tree; | |
60 | break; | |
61 | case HFSPLUS_ATTR_CNID: | |
62 | tree = HFSPLUS_SB(sb).attr_tree; | |
63 | break; | |
64 | default: | |
65 | BUG(); | |
66 | return 0; | |
67 | } | |
68 | if (tree->node_size >= PAGE_CACHE_SIZE) { | |
69 | nidx = page->index >> (tree->node_size_shift - PAGE_CACHE_SHIFT); | |
70 | spin_lock(&tree->hash_lock); | |
71 | node = hfs_bnode_findhash(tree, nidx); | |
72 | if (!node) | |
73 | ; | |
74 | else if (atomic_read(&node->refcnt)) | |
75 | res = 0; | |
76 | if (res && node) { | |
77 | hfs_bnode_unhash(node); | |
78 | hfs_bnode_free(node); | |
79 | } | |
80 | spin_unlock(&tree->hash_lock); | |
81 | } else { | |
82 | nidx = page->index << (PAGE_CACHE_SHIFT - tree->node_size_shift); | |
83 | i = 1 << (PAGE_CACHE_SHIFT - tree->node_size_shift); | |
84 | spin_lock(&tree->hash_lock); | |
85 | do { | |
86 | node = hfs_bnode_findhash(tree, nidx++); | |
87 | if (!node) | |
88 | continue; | |
89 | if (atomic_read(&node->refcnt)) { | |
90 | res = 0; | |
91 | break; | |
92 | } | |
93 | hfs_bnode_unhash(node); | |
94 | hfs_bnode_free(node); | |
95 | } while (--i && nidx < tree->node_count); | |
96 | spin_unlock(&tree->hash_lock); | |
97 | } | |
1da177e4 LT |
98 | return res ? try_to_free_buffers(page) : 0; |
99 | } | |
100 | ||
1da177e4 LT |
101 | static ssize_t hfsplus_direct_IO(int rw, struct kiocb *iocb, |
102 | const struct iovec *iov, loff_t offset, unsigned long nr_segs) | |
103 | { | |
104 | struct file *file = iocb->ki_filp; | |
f44ea031 | 105 | struct inode *inode = file->f_path.dentry->d_inode->i_mapping->host; |
1da177e4 LT |
106 | |
107 | return blockdev_direct_IO(rw, iocb, inode, inode->i_sb->s_bdev, iov, | |
1d8fa7a2 | 108 | offset, nr_segs, hfsplus_get_block, NULL); |
1da177e4 LT |
109 | } |
110 | ||
111 | static int hfsplus_writepages(struct address_space *mapping, | |
112 | struct writeback_control *wbc) | |
113 | { | |
114 | return mpage_writepages(mapping, wbc, hfsplus_get_block); | |
115 | } | |
116 | ||
f5e54d6e | 117 | const struct address_space_operations hfsplus_btree_aops = { |
1da177e4 LT |
118 | .readpage = hfsplus_readpage, |
119 | .writepage = hfsplus_writepage, | |
120 | .sync_page = block_sync_page, | |
7c0efc62 NP |
121 | .write_begin = hfsplus_write_begin, |
122 | .write_end = generic_write_end, | |
1da177e4 LT |
123 | .bmap = hfsplus_bmap, |
124 | .releasepage = hfsplus_releasepage, | |
125 | }; | |
126 | ||
f5e54d6e | 127 | const struct address_space_operations hfsplus_aops = { |
1da177e4 LT |
128 | .readpage = hfsplus_readpage, |
129 | .writepage = hfsplus_writepage, | |
130 | .sync_page = block_sync_page, | |
7c0efc62 NP |
131 | .write_begin = hfsplus_write_begin, |
132 | .write_end = generic_write_end, | |
1da177e4 LT |
133 | .bmap = hfsplus_bmap, |
134 | .direct_IO = hfsplus_direct_IO, | |
135 | .writepages = hfsplus_writepages, | |
136 | }; | |
137 | ||
d45bce8f DG |
138 | struct dentry_operations hfsplus_dentry_operations = { |
139 | .d_hash = hfsplus_hash_dentry, | |
140 | .d_compare = hfsplus_compare_dentry, | |
141 | }; | |
142 | ||
1da177e4 LT |
143 | static struct dentry *hfsplus_file_lookup(struct inode *dir, struct dentry *dentry, |
144 | struct nameidata *nd) | |
145 | { | |
146 | struct hfs_find_data fd; | |
147 | struct super_block *sb = dir->i_sb; | |
148 | struct inode *inode = NULL; | |
149 | int err; | |
150 | ||
151 | if (HFSPLUS_IS_RSRC(dir) || strcmp(dentry->d_name.name, "rsrc")) | |
152 | goto out; | |
153 | ||
154 | inode = HFSPLUS_I(dir).rsrc_inode; | |
155 | if (inode) | |
156 | goto out; | |
157 | ||
158 | inode = new_inode(sb); | |
159 | if (!inode) | |
160 | return ERR_PTR(-ENOMEM); | |
161 | ||
162 | inode->i_ino = dir->i_ino; | |
163 | INIT_LIST_HEAD(&HFSPLUS_I(inode).open_dir_list); | |
164 | init_MUTEX(&HFSPLUS_I(inode).extents_lock); | |
165 | HFSPLUS_I(inode).flags = HFSPLUS_FLG_RSRC; | |
166 | ||
167 | hfs_find_init(HFSPLUS_SB(sb).cat_tree, &fd); | |
168 | err = hfsplus_find_cat(sb, dir->i_ino, &fd); | |
169 | if (!err) | |
170 | err = hfsplus_cat_read_inode(inode, &fd); | |
171 | hfs_find_exit(&fd); | |
172 | if (err) { | |
173 | iput(inode); | |
174 | return ERR_PTR(err); | |
175 | } | |
176 | HFSPLUS_I(inode).rsrc_inode = dir; | |
177 | HFSPLUS_I(dir).rsrc_inode = inode; | |
178 | igrab(dir); | |
179 | hlist_add_head(&inode->i_hash, &HFSPLUS_SB(sb).rsrc_inodes); | |
180 | mark_inode_dirty(inode); | |
1da177e4 LT |
181 | out: |
182 | d_add(dentry, inode); | |
183 | return NULL; | |
184 | } | |
185 | ||
186 | static void hfsplus_get_perms(struct inode *inode, struct hfsplus_perm *perms, int dir) | |
187 | { | |
188 | struct super_block *sb = inode->i_sb; | |
189 | u16 mode; | |
190 | ||
191 | mode = be16_to_cpu(perms->mode); | |
192 | ||
193 | inode->i_uid = be32_to_cpu(perms->owner); | |
194 | if (!inode->i_uid && !mode) | |
195 | inode->i_uid = HFSPLUS_SB(sb).uid; | |
196 | ||
197 | inode->i_gid = be32_to_cpu(perms->group); | |
198 | if (!inode->i_gid && !mode) | |
199 | inode->i_gid = HFSPLUS_SB(sb).gid; | |
200 | ||
201 | if (dir) { | |
202 | mode = mode ? (mode & S_IALLUGO) : | |
203 | (S_IRWXUGO & ~(HFSPLUS_SB(sb).umask)); | |
204 | mode |= S_IFDIR; | |
205 | } else if (!mode) | |
206 | mode = S_IFREG | ((S_IRUGO|S_IWUGO) & | |
207 | ~(HFSPLUS_SB(sb).umask)); | |
208 | inode->i_mode = mode; | |
209 | ||
210 | HFSPLUS_I(inode).rootflags = perms->rootflags; | |
211 | HFSPLUS_I(inode).userflags = perms->userflags; | |
212 | if (perms->rootflags & HFSPLUS_FLG_IMMUTABLE) | |
213 | inode->i_flags |= S_IMMUTABLE; | |
214 | else | |
215 | inode->i_flags &= ~S_IMMUTABLE; | |
216 | if (perms->rootflags & HFSPLUS_FLG_APPEND) | |
217 | inode->i_flags |= S_APPEND; | |
218 | else | |
219 | inode->i_flags &= ~S_APPEND; | |
220 | } | |
221 | ||
222 | static void hfsplus_set_perms(struct inode *inode, struct hfsplus_perm *perms) | |
223 | { | |
224 | if (inode->i_flags & S_IMMUTABLE) | |
225 | perms->rootflags |= HFSPLUS_FLG_IMMUTABLE; | |
226 | else | |
227 | perms->rootflags &= ~HFSPLUS_FLG_IMMUTABLE; | |
228 | if (inode->i_flags & S_APPEND) | |
229 | perms->rootflags |= HFSPLUS_FLG_APPEND; | |
230 | else | |
231 | perms->rootflags &= ~HFSPLUS_FLG_APPEND; | |
232 | perms->userflags = HFSPLUS_I(inode).userflags; | |
233 | perms->mode = cpu_to_be16(inode->i_mode); | |
234 | perms->owner = cpu_to_be32(inode->i_uid); | |
235 | perms->group = cpu_to_be32(inode->i_gid); | |
236 | perms->dev = cpu_to_be32(HFSPLUS_I(inode).dev); | |
237 | } | |
238 | ||
239 | static int hfsplus_permission(struct inode *inode, int mask, struct nameidata *nd) | |
240 | { | |
241 | /* MAY_EXEC is also used for lookup, if no x bit is set allow lookup, | |
242 | * open_exec has the same test, so it's still not executable, if a x bit | |
243 | * is set fall back to standard permission check. | |
244 | */ | |
245 | if (S_ISREG(inode->i_mode) && mask & MAY_EXEC && !(inode->i_mode & 0111)) | |
246 | return 0; | |
247 | return generic_permission(inode, mask, NULL); | |
248 | } | |
249 | ||
250 | ||
251 | static int hfsplus_file_open(struct inode *inode, struct file *file) | |
252 | { | |
253 | if (HFSPLUS_IS_RSRC(inode)) | |
254 | inode = HFSPLUS_I(inode).rsrc_inode; | |
255 | if (atomic_read(&file->f_count) != 1) | |
256 | return 0; | |
257 | atomic_inc(&HFSPLUS_I(inode).opencnt); | |
258 | return 0; | |
259 | } | |
260 | ||
261 | static int hfsplus_file_release(struct inode *inode, struct file *file) | |
262 | { | |
263 | struct super_block *sb = inode->i_sb; | |
264 | ||
265 | if (HFSPLUS_IS_RSRC(inode)) | |
266 | inode = HFSPLUS_I(inode).rsrc_inode; | |
267 | if (atomic_read(&file->f_count) != 0) | |
268 | return 0; | |
269 | if (atomic_dec_and_test(&HFSPLUS_I(inode).opencnt)) { | |
1b1dcc1b | 270 | mutex_lock(&inode->i_mutex); |
1da177e4 LT |
271 | hfsplus_file_truncate(inode); |
272 | if (inode->i_flags & S_DEAD) { | |
273 | hfsplus_delete_cat(inode->i_ino, HFSPLUS_SB(sb).hidden_dir, NULL); | |
274 | hfsplus_delete_inode(inode); | |
275 | } | |
1b1dcc1b | 276 | mutex_unlock(&inode->i_mutex); |
1da177e4 LT |
277 | } |
278 | return 0; | |
279 | } | |
280 | ||
92e1d5be | 281 | static const struct inode_operations hfsplus_file_inode_operations = { |
1da177e4 LT |
282 | .lookup = hfsplus_file_lookup, |
283 | .truncate = hfsplus_file_truncate, | |
284 | .permission = hfsplus_permission, | |
285 | .setxattr = hfsplus_setxattr, | |
286 | .getxattr = hfsplus_getxattr, | |
287 | .listxattr = hfsplus_listxattr, | |
288 | }; | |
289 | ||
4b6f5d20 | 290 | static const struct file_operations hfsplus_file_operations = { |
1da177e4 | 291 | .llseek = generic_file_llseek, |
543ade1f BP |
292 | .read = do_sync_read, |
293 | .aio_read = generic_file_aio_read, | |
294 | .write = do_sync_write, | |
295 | .aio_write = generic_file_aio_write, | |
1da177e4 | 296 | .mmap = generic_file_mmap, |
5ffc4ef4 | 297 | .splice_read = generic_file_splice_read, |
1da177e4 LT |
298 | .fsync = file_fsync, |
299 | .open = hfsplus_file_open, | |
300 | .release = hfsplus_file_release, | |
301 | .ioctl = hfsplus_ioctl, | |
302 | }; | |
303 | ||
304 | struct inode *hfsplus_new_inode(struct super_block *sb, int mode) | |
305 | { | |
306 | struct inode *inode = new_inode(sb); | |
307 | if (!inode) | |
308 | return NULL; | |
309 | ||
1da177e4 LT |
310 | inode->i_ino = HFSPLUS_SB(sb).next_cnid++; |
311 | inode->i_mode = mode; | |
312 | inode->i_uid = current->fsuid; | |
313 | inode->i_gid = current->fsgid; | |
314 | inode->i_nlink = 1; | |
315 | inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME_SEC; | |
1da177e4 LT |
316 | INIT_LIST_HEAD(&HFSPLUS_I(inode).open_dir_list); |
317 | init_MUTEX(&HFSPLUS_I(inode).extents_lock); | |
318 | atomic_set(&HFSPLUS_I(inode).opencnt, 0); | |
319 | HFSPLUS_I(inode).flags = 0; | |
320 | memset(HFSPLUS_I(inode).first_extents, 0, sizeof(hfsplus_extent_rec)); | |
321 | memset(HFSPLUS_I(inode).cached_extents, 0, sizeof(hfsplus_extent_rec)); | |
322 | HFSPLUS_I(inode).alloc_blocks = 0; | |
323 | HFSPLUS_I(inode).first_blocks = 0; | |
324 | HFSPLUS_I(inode).cached_start = 0; | |
325 | HFSPLUS_I(inode).cached_blocks = 0; | |
326 | HFSPLUS_I(inode).phys_size = 0; | |
327 | HFSPLUS_I(inode).fs_blocks = 0; | |
328 | HFSPLUS_I(inode).rsrc_inode = NULL; | |
329 | if (S_ISDIR(inode->i_mode)) { | |
330 | inode->i_size = 2; | |
331 | HFSPLUS_SB(sb).folder_count++; | |
332 | inode->i_op = &hfsplus_dir_inode_operations; | |
333 | inode->i_fop = &hfsplus_dir_operations; | |
334 | } else if (S_ISREG(inode->i_mode)) { | |
335 | HFSPLUS_SB(sb).file_count++; | |
336 | inode->i_op = &hfsplus_file_inode_operations; | |
337 | inode->i_fop = &hfsplus_file_operations; | |
338 | inode->i_mapping->a_ops = &hfsplus_aops; | |
339 | HFSPLUS_I(inode).clump_blocks = HFSPLUS_SB(sb).data_clump_blocks; | |
340 | } else if (S_ISLNK(inode->i_mode)) { | |
341 | HFSPLUS_SB(sb).file_count++; | |
342 | inode->i_op = &page_symlink_inode_operations; | |
343 | inode->i_mapping->a_ops = &hfsplus_aops; | |
344 | HFSPLUS_I(inode).clump_blocks = 1; | |
345 | } else | |
346 | HFSPLUS_SB(sb).file_count++; | |
347 | insert_inode_hash(inode); | |
348 | mark_inode_dirty(inode); | |
349 | sb->s_dirt = 1; | |
350 | ||
351 | return inode; | |
352 | } | |
353 | ||
354 | void hfsplus_delete_inode(struct inode *inode) | |
355 | { | |
356 | struct super_block *sb = inode->i_sb; | |
357 | ||
358 | if (S_ISDIR(inode->i_mode)) { | |
359 | HFSPLUS_SB(sb).folder_count--; | |
360 | sb->s_dirt = 1; | |
361 | return; | |
362 | } | |
363 | HFSPLUS_SB(sb).file_count--; | |
364 | if (S_ISREG(inode->i_mode)) { | |
365 | if (!inode->i_nlink) { | |
366 | inode->i_size = 0; | |
367 | hfsplus_file_truncate(inode); | |
368 | } | |
369 | } else if (S_ISLNK(inode->i_mode)) { | |
370 | inode->i_size = 0; | |
371 | hfsplus_file_truncate(inode); | |
372 | } | |
373 | sb->s_dirt = 1; | |
374 | } | |
375 | ||
376 | void hfsplus_inode_read_fork(struct inode *inode, struct hfsplus_fork_raw *fork) | |
377 | { | |
378 | struct super_block *sb = inode->i_sb; | |
379 | u32 count; | |
380 | int i; | |
381 | ||
382 | memcpy(&HFSPLUS_I(inode).first_extents, &fork->extents, | |
383 | sizeof(hfsplus_extent_rec)); | |
384 | for (count = 0, i = 0; i < 8; i++) | |
385 | count += be32_to_cpu(fork->extents[i].block_count); | |
386 | HFSPLUS_I(inode).first_blocks = count; | |
387 | memset(HFSPLUS_I(inode).cached_extents, 0, sizeof(hfsplus_extent_rec)); | |
388 | HFSPLUS_I(inode).cached_start = 0; | |
389 | HFSPLUS_I(inode).cached_blocks = 0; | |
390 | ||
391 | HFSPLUS_I(inode).alloc_blocks = be32_to_cpu(fork->total_blocks); | |
392 | inode->i_size = HFSPLUS_I(inode).phys_size = be64_to_cpu(fork->total_size); | |
393 | HFSPLUS_I(inode).fs_blocks = (inode->i_size + sb->s_blocksize - 1) >> sb->s_blocksize_bits; | |
394 | inode_set_bytes(inode, HFSPLUS_I(inode).fs_blocks << sb->s_blocksize_bits); | |
395 | HFSPLUS_I(inode).clump_blocks = be32_to_cpu(fork->clump_size) >> HFSPLUS_SB(sb).alloc_blksz_shift; | |
396 | if (!HFSPLUS_I(inode).clump_blocks) | |
397 | HFSPLUS_I(inode).clump_blocks = HFSPLUS_IS_RSRC(inode) ? HFSPLUS_SB(sb).rsrc_clump_blocks : | |
398 | HFSPLUS_SB(sb).data_clump_blocks; | |
399 | } | |
400 | ||
401 | void hfsplus_inode_write_fork(struct inode *inode, struct hfsplus_fork_raw *fork) | |
402 | { | |
403 | memcpy(&fork->extents, &HFSPLUS_I(inode).first_extents, | |
404 | sizeof(hfsplus_extent_rec)); | |
405 | fork->total_size = cpu_to_be64(inode->i_size); | |
406 | fork->total_blocks = cpu_to_be32(HFSPLUS_I(inode).alloc_blocks); | |
407 | } | |
408 | ||
409 | int hfsplus_cat_read_inode(struct inode *inode, struct hfs_find_data *fd) | |
410 | { | |
411 | hfsplus_cat_entry entry; | |
412 | int res = 0; | |
413 | u16 type; | |
414 | ||
415 | type = hfs_bnode_read_u16(fd->bnode, fd->entryoffset); | |
416 | ||
417 | HFSPLUS_I(inode).dev = 0; | |
1da177e4 LT |
418 | if (type == HFSPLUS_FOLDER) { |
419 | struct hfsplus_cat_folder *folder = &entry.folder; | |
420 | ||
421 | if (fd->entrylength < sizeof(struct hfsplus_cat_folder)) | |
422 | /* panic? */; | |
423 | hfs_bnode_read(fd->bnode, &entry, fd->entryoffset, | |
424 | sizeof(struct hfsplus_cat_folder)); | |
425 | hfsplus_get_perms(inode, &folder->permissions, 1); | |
426 | inode->i_nlink = 1; | |
427 | inode->i_size = 2 + be32_to_cpu(folder->valence); | |
428 | inode->i_atime = hfsp_mt2ut(folder->access_date); | |
429 | inode->i_mtime = hfsp_mt2ut(folder->content_mod_date); | |
9a4cad95 RZ |
430 | inode->i_ctime = hfsp_mt2ut(folder->attribute_mod_date); |
431 | HFSPLUS_I(inode).create_date = folder->create_date; | |
1da177e4 LT |
432 | HFSPLUS_I(inode).fs_blocks = 0; |
433 | inode->i_op = &hfsplus_dir_inode_operations; | |
434 | inode->i_fop = &hfsplus_dir_operations; | |
435 | } else if (type == HFSPLUS_FILE) { | |
436 | struct hfsplus_cat_file *file = &entry.file; | |
437 | ||
438 | if (fd->entrylength < sizeof(struct hfsplus_cat_file)) | |
439 | /* panic? */; | |
440 | hfs_bnode_read(fd->bnode, &entry, fd->entryoffset, | |
441 | sizeof(struct hfsplus_cat_file)); | |
442 | ||
443 | hfsplus_inode_read_fork(inode, HFSPLUS_IS_DATA(inode) ? | |
444 | &file->data_fork : &file->rsrc_fork); | |
445 | hfsplus_get_perms(inode, &file->permissions, 0); | |
446 | inode->i_nlink = 1; | |
447 | if (S_ISREG(inode->i_mode)) { | |
448 | if (file->permissions.dev) | |
449 | inode->i_nlink = be32_to_cpu(file->permissions.dev); | |
450 | inode->i_op = &hfsplus_file_inode_operations; | |
451 | inode->i_fop = &hfsplus_file_operations; | |
452 | inode->i_mapping->a_ops = &hfsplus_aops; | |
453 | } else if (S_ISLNK(inode->i_mode)) { | |
454 | inode->i_op = &page_symlink_inode_operations; | |
455 | inode->i_mapping->a_ops = &hfsplus_aops; | |
456 | } else { | |
457 | init_special_inode(inode, inode->i_mode, | |
458 | be32_to_cpu(file->permissions.dev)); | |
459 | } | |
460 | inode->i_atime = hfsp_mt2ut(file->access_date); | |
461 | inode->i_mtime = hfsp_mt2ut(file->content_mod_date); | |
9a4cad95 RZ |
462 | inode->i_ctime = hfsp_mt2ut(file->attribute_mod_date); |
463 | HFSPLUS_I(inode).create_date = file->create_date; | |
1da177e4 | 464 | } else { |
634725a9 | 465 | printk(KERN_ERR "hfs: bad catalog entry used to create inode\n"); |
1da177e4 LT |
466 | res = -EIO; |
467 | } | |
468 | return res; | |
469 | } | |
470 | ||
471 | int hfsplus_cat_write_inode(struct inode *inode) | |
472 | { | |
473 | struct inode *main_inode = inode; | |
474 | struct hfs_find_data fd; | |
475 | hfsplus_cat_entry entry; | |
476 | ||
477 | if (HFSPLUS_IS_RSRC(inode)) | |
478 | main_inode = HFSPLUS_I(inode).rsrc_inode; | |
479 | ||
480 | if (!main_inode->i_nlink) | |
481 | return 0; | |
482 | ||
483 | if (hfs_find_init(HFSPLUS_SB(main_inode->i_sb).cat_tree, &fd)) | |
484 | /* panic? */ | |
485 | return -EIO; | |
486 | ||
487 | if (hfsplus_find_cat(main_inode->i_sb, main_inode->i_ino, &fd)) | |
488 | /* panic? */ | |
489 | goto out; | |
490 | ||
491 | if (S_ISDIR(main_inode->i_mode)) { | |
492 | struct hfsplus_cat_folder *folder = &entry.folder; | |
493 | ||
494 | if (fd.entrylength < sizeof(struct hfsplus_cat_folder)) | |
495 | /* panic? */; | |
496 | hfs_bnode_read(fd.bnode, &entry, fd.entryoffset, | |
497 | sizeof(struct hfsplus_cat_folder)); | |
498 | /* simple node checks? */ | |
499 | hfsplus_set_perms(inode, &folder->permissions); | |
500 | folder->access_date = hfsp_ut2mt(inode->i_atime); | |
501 | folder->content_mod_date = hfsp_ut2mt(inode->i_mtime); | |
502 | folder->attribute_mod_date = hfsp_ut2mt(inode->i_ctime); | |
503 | folder->valence = cpu_to_be32(inode->i_size - 2); | |
504 | hfs_bnode_write(fd.bnode, &entry, fd.entryoffset, | |
505 | sizeof(struct hfsplus_cat_folder)); | |
506 | } else if (HFSPLUS_IS_RSRC(inode)) { | |
507 | struct hfsplus_cat_file *file = &entry.file; | |
508 | hfs_bnode_read(fd.bnode, &entry, fd.entryoffset, | |
509 | sizeof(struct hfsplus_cat_file)); | |
510 | hfsplus_inode_write_fork(inode, &file->rsrc_fork); | |
511 | hfs_bnode_write(fd.bnode, &entry, fd.entryoffset, | |
512 | sizeof(struct hfsplus_cat_file)); | |
513 | } else { | |
514 | struct hfsplus_cat_file *file = &entry.file; | |
515 | ||
516 | if (fd.entrylength < sizeof(struct hfsplus_cat_file)) | |
517 | /* panic? */; | |
518 | hfs_bnode_read(fd.bnode, &entry, fd.entryoffset, | |
519 | sizeof(struct hfsplus_cat_file)); | |
520 | hfsplus_inode_write_fork(inode, &file->data_fork); | |
521 | if (S_ISREG(inode->i_mode)) | |
522 | HFSPLUS_I(inode).dev = inode->i_nlink; | |
523 | if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) | |
524 | HFSPLUS_I(inode).dev = kdev_t_to_nr(inode->i_rdev); | |
525 | hfsplus_set_perms(inode, &file->permissions); | |
526 | if ((file->permissions.rootflags | file->permissions.userflags) & HFSPLUS_FLG_IMMUTABLE) | |
527 | file->flags |= cpu_to_be16(HFSPLUS_FILE_LOCKED); | |
528 | else | |
529 | file->flags &= cpu_to_be16(~HFSPLUS_FILE_LOCKED); | |
530 | file->access_date = hfsp_ut2mt(inode->i_atime); | |
531 | file->content_mod_date = hfsp_ut2mt(inode->i_mtime); | |
532 | file->attribute_mod_date = hfsp_ut2mt(inode->i_ctime); | |
533 | hfs_bnode_write(fd.bnode, &entry, fd.entryoffset, | |
534 | sizeof(struct hfsplus_cat_file)); | |
535 | } | |
536 | out: | |
537 | hfs_find_exit(&fd); | |
538 | return 0; | |
539 | } |