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 | { |
282dc178 CH |
34 | int ret; |
35 | ||
7c0efc62 | 36 | *pagep = NULL; |
282dc178 | 37 | ret = cont_write_begin(file, mapping, pos, len, flags, pagep, fsdata, |
7c0efc62 NP |
38 | hfsplus_get_block, |
39 | &HFSPLUS_I(mapping->host).phys_size); | |
282dc178 CH |
40 | if (unlikely(ret)) { |
41 | loff_t isize = mapping->host->i_size; | |
42 | if (pos + len > isize) | |
43 | vmtruncate(mapping->host, isize); | |
44 | } | |
45 | ||
46 | return ret; | |
1da177e4 LT |
47 | } |
48 | ||
49 | static sector_t hfsplus_bmap(struct address_space *mapping, sector_t block) | |
50 | { | |
51 | return generic_block_bmap(mapping, block, hfsplus_get_block); | |
52 | } | |
53 | ||
27496a8c | 54 | static int hfsplus_releasepage(struct page *page, gfp_t mask) |
1da177e4 LT |
55 | { |
56 | struct inode *inode = page->mapping->host; | |
57 | struct super_block *sb = inode->i_sb; | |
58 | struct hfs_btree *tree; | |
59 | struct hfs_bnode *node; | |
60 | u32 nidx; | |
61 | int i, res = 1; | |
62 | ||
63 | switch (inode->i_ino) { | |
64 | case HFSPLUS_EXT_CNID: | |
65 | tree = HFSPLUS_SB(sb).ext_tree; | |
66 | break; | |
67 | case HFSPLUS_CAT_CNID: | |
68 | tree = HFSPLUS_SB(sb).cat_tree; | |
69 | break; | |
70 | case HFSPLUS_ATTR_CNID: | |
71 | tree = HFSPLUS_SB(sb).attr_tree; | |
72 | break; | |
73 | default: | |
74 | BUG(); | |
75 | return 0; | |
76 | } | |
70632249 ES |
77 | if (!tree) |
78 | return 0; | |
1da177e4 LT |
79 | if (tree->node_size >= PAGE_CACHE_SIZE) { |
80 | nidx = page->index >> (tree->node_size_shift - PAGE_CACHE_SHIFT); | |
81 | spin_lock(&tree->hash_lock); | |
82 | node = hfs_bnode_findhash(tree, nidx); | |
83 | if (!node) | |
84 | ; | |
85 | else if (atomic_read(&node->refcnt)) | |
86 | res = 0; | |
87 | if (res && node) { | |
88 | hfs_bnode_unhash(node); | |
89 | hfs_bnode_free(node); | |
90 | } | |
91 | spin_unlock(&tree->hash_lock); | |
92 | } else { | |
93 | nidx = page->index << (PAGE_CACHE_SHIFT - tree->node_size_shift); | |
94 | i = 1 << (PAGE_CACHE_SHIFT - tree->node_size_shift); | |
95 | spin_lock(&tree->hash_lock); | |
96 | do { | |
97 | node = hfs_bnode_findhash(tree, nidx++); | |
98 | if (!node) | |
99 | continue; | |
100 | if (atomic_read(&node->refcnt)) { | |
101 | res = 0; | |
102 | break; | |
103 | } | |
104 | hfs_bnode_unhash(node); | |
105 | hfs_bnode_free(node); | |
106 | } while (--i && nidx < tree->node_count); | |
107 | spin_unlock(&tree->hash_lock); | |
108 | } | |
1da177e4 LT |
109 | return res ? try_to_free_buffers(page) : 0; |
110 | } | |
111 | ||
1da177e4 LT |
112 | static ssize_t hfsplus_direct_IO(int rw, struct kiocb *iocb, |
113 | const struct iovec *iov, loff_t offset, unsigned long nr_segs) | |
114 | { | |
115 | struct file *file = iocb->ki_filp; | |
f44ea031 | 116 | struct inode *inode = file->f_path.dentry->d_inode->i_mapping->host; |
eafdc7d1 | 117 | ssize_t ret; |
1da177e4 | 118 | |
eafdc7d1 | 119 | ret = blockdev_direct_IO(rw, iocb, inode, inode->i_sb->s_bdev, iov, |
1d8fa7a2 | 120 | offset, nr_segs, hfsplus_get_block, NULL); |
eafdc7d1 CH |
121 | |
122 | /* | |
123 | * In case of error extending write may have instantiated a few | |
124 | * blocks outside i_size. Trim these off again. | |
125 | */ | |
126 | if (unlikely((rw & WRITE) && ret < 0)) { | |
127 | loff_t isize = i_size_read(inode); | |
128 | loff_t end = offset + iov_length(iov, nr_segs); | |
129 | ||
130 | if (end > isize) | |
131 | vmtruncate(inode, isize); | |
132 | } | |
133 | ||
134 | return ret; | |
1da177e4 LT |
135 | } |
136 | ||
137 | static int hfsplus_writepages(struct address_space *mapping, | |
138 | struct writeback_control *wbc) | |
139 | { | |
140 | return mpage_writepages(mapping, wbc, hfsplus_get_block); | |
141 | } | |
142 | ||
f5e54d6e | 143 | const struct address_space_operations hfsplus_btree_aops = { |
1da177e4 LT |
144 | .readpage = hfsplus_readpage, |
145 | .writepage = hfsplus_writepage, | |
146 | .sync_page = block_sync_page, | |
7c0efc62 NP |
147 | .write_begin = hfsplus_write_begin, |
148 | .write_end = generic_write_end, | |
1da177e4 LT |
149 | .bmap = hfsplus_bmap, |
150 | .releasepage = hfsplus_releasepage, | |
151 | }; | |
152 | ||
f5e54d6e | 153 | const struct address_space_operations hfsplus_aops = { |
1da177e4 LT |
154 | .readpage = hfsplus_readpage, |
155 | .writepage = hfsplus_writepage, | |
156 | .sync_page = block_sync_page, | |
7c0efc62 NP |
157 | .write_begin = hfsplus_write_begin, |
158 | .write_end = generic_write_end, | |
1da177e4 LT |
159 | .bmap = hfsplus_bmap, |
160 | .direct_IO = hfsplus_direct_IO, | |
161 | .writepages = hfsplus_writepages, | |
162 | }; | |
163 | ||
e16404ed | 164 | const struct dentry_operations hfsplus_dentry_operations = { |
d45bce8f DG |
165 | .d_hash = hfsplus_hash_dentry, |
166 | .d_compare = hfsplus_compare_dentry, | |
167 | }; | |
168 | ||
1da177e4 LT |
169 | static struct dentry *hfsplus_file_lookup(struct inode *dir, struct dentry *dentry, |
170 | struct nameidata *nd) | |
171 | { | |
172 | struct hfs_find_data fd; | |
173 | struct super_block *sb = dir->i_sb; | |
174 | struct inode *inode = NULL; | |
175 | int err; | |
176 | ||
177 | if (HFSPLUS_IS_RSRC(dir) || strcmp(dentry->d_name.name, "rsrc")) | |
178 | goto out; | |
179 | ||
180 | inode = HFSPLUS_I(dir).rsrc_inode; | |
181 | if (inode) | |
182 | goto out; | |
183 | ||
184 | inode = new_inode(sb); | |
185 | if (!inode) | |
186 | return ERR_PTR(-ENOMEM); | |
187 | ||
188 | inode->i_ino = dir->i_ino; | |
189 | INIT_LIST_HEAD(&HFSPLUS_I(inode).open_dir_list); | |
895c23f8 | 190 | mutex_init(&HFSPLUS_I(inode).extents_lock); |
1da177e4 LT |
191 | HFSPLUS_I(inode).flags = HFSPLUS_FLG_RSRC; |
192 | ||
193 | hfs_find_init(HFSPLUS_SB(sb).cat_tree, &fd); | |
194 | err = hfsplus_find_cat(sb, dir->i_ino, &fd); | |
195 | if (!err) | |
196 | err = hfsplus_cat_read_inode(inode, &fd); | |
197 | hfs_find_exit(&fd); | |
198 | if (err) { | |
199 | iput(inode); | |
200 | return ERR_PTR(err); | |
201 | } | |
202 | HFSPLUS_I(inode).rsrc_inode = dir; | |
203 | HFSPLUS_I(dir).rsrc_inode = inode; | |
204 | igrab(dir); | |
205 | hlist_add_head(&inode->i_hash, &HFSPLUS_SB(sb).rsrc_inodes); | |
206 | mark_inode_dirty(inode); | |
1da177e4 LT |
207 | out: |
208 | d_add(dentry, inode); | |
209 | return NULL; | |
210 | } | |
211 | ||
212 | static void hfsplus_get_perms(struct inode *inode, struct hfsplus_perm *perms, int dir) | |
213 | { | |
214 | struct super_block *sb = inode->i_sb; | |
215 | u16 mode; | |
216 | ||
217 | mode = be16_to_cpu(perms->mode); | |
218 | ||
219 | inode->i_uid = be32_to_cpu(perms->owner); | |
220 | if (!inode->i_uid && !mode) | |
221 | inode->i_uid = HFSPLUS_SB(sb).uid; | |
222 | ||
223 | inode->i_gid = be32_to_cpu(perms->group); | |
224 | if (!inode->i_gid && !mode) | |
225 | inode->i_gid = HFSPLUS_SB(sb).gid; | |
226 | ||
227 | if (dir) { | |
228 | mode = mode ? (mode & S_IALLUGO) : | |
229 | (S_IRWXUGO & ~(HFSPLUS_SB(sb).umask)); | |
230 | mode |= S_IFDIR; | |
231 | } else if (!mode) | |
232 | mode = S_IFREG | ((S_IRUGO|S_IWUGO) & | |
233 | ~(HFSPLUS_SB(sb).umask)); | |
234 | inode->i_mode = mode; | |
235 | ||
236 | HFSPLUS_I(inode).rootflags = perms->rootflags; | |
237 | HFSPLUS_I(inode).userflags = perms->userflags; | |
238 | if (perms->rootflags & HFSPLUS_FLG_IMMUTABLE) | |
239 | inode->i_flags |= S_IMMUTABLE; | |
240 | else | |
241 | inode->i_flags &= ~S_IMMUTABLE; | |
242 | if (perms->rootflags & HFSPLUS_FLG_APPEND) | |
243 | inode->i_flags |= S_APPEND; | |
244 | else | |
245 | inode->i_flags &= ~S_APPEND; | |
246 | } | |
247 | ||
248 | static void hfsplus_set_perms(struct inode *inode, struct hfsplus_perm *perms) | |
249 | { | |
250 | if (inode->i_flags & S_IMMUTABLE) | |
251 | perms->rootflags |= HFSPLUS_FLG_IMMUTABLE; | |
252 | else | |
253 | perms->rootflags &= ~HFSPLUS_FLG_IMMUTABLE; | |
254 | if (inode->i_flags & S_APPEND) | |
255 | perms->rootflags |= HFSPLUS_FLG_APPEND; | |
256 | else | |
257 | perms->rootflags &= ~HFSPLUS_FLG_APPEND; | |
258 | perms->userflags = HFSPLUS_I(inode).userflags; | |
259 | perms->mode = cpu_to_be16(inode->i_mode); | |
260 | perms->owner = cpu_to_be32(inode->i_uid); | |
261 | perms->group = cpu_to_be32(inode->i_gid); | |
262 | perms->dev = cpu_to_be32(HFSPLUS_I(inode).dev); | |
263 | } | |
264 | ||
1da177e4 LT |
265 | static int hfsplus_file_open(struct inode *inode, struct file *file) |
266 | { | |
267 | if (HFSPLUS_IS_RSRC(inode)) | |
268 | inode = HFSPLUS_I(inode).rsrc_inode; | |
6e715294 AC |
269 | if (!(file->f_flags & O_LARGEFILE) && i_size_read(inode) > MAX_NON_LFS) |
270 | return -EOVERFLOW; | |
1da177e4 LT |
271 | atomic_inc(&HFSPLUS_I(inode).opencnt); |
272 | return 0; | |
273 | } | |
274 | ||
275 | static int hfsplus_file_release(struct inode *inode, struct file *file) | |
276 | { | |
277 | struct super_block *sb = inode->i_sb; | |
278 | ||
279 | if (HFSPLUS_IS_RSRC(inode)) | |
280 | inode = HFSPLUS_I(inode).rsrc_inode; | |
1da177e4 | 281 | if (atomic_dec_and_test(&HFSPLUS_I(inode).opencnt)) { |
1b1dcc1b | 282 | mutex_lock(&inode->i_mutex); |
1da177e4 LT |
283 | hfsplus_file_truncate(inode); |
284 | if (inode->i_flags & S_DEAD) { | |
285 | hfsplus_delete_cat(inode->i_ino, HFSPLUS_SB(sb).hidden_dir, NULL); | |
286 | hfsplus_delete_inode(inode); | |
287 | } | |
1b1dcc1b | 288 | mutex_unlock(&inode->i_mutex); |
1da177e4 LT |
289 | } |
290 | return 0; | |
291 | } | |
292 | ||
92e1d5be | 293 | static const struct inode_operations hfsplus_file_inode_operations = { |
1da177e4 LT |
294 | .lookup = hfsplus_file_lookup, |
295 | .truncate = hfsplus_file_truncate, | |
1da177e4 LT |
296 | .setxattr = hfsplus_setxattr, |
297 | .getxattr = hfsplus_getxattr, | |
298 | .listxattr = hfsplus_listxattr, | |
299 | }; | |
300 | ||
4b6f5d20 | 301 | static const struct file_operations hfsplus_file_operations = { |
1da177e4 | 302 | .llseek = generic_file_llseek, |
543ade1f BP |
303 | .read = do_sync_read, |
304 | .aio_read = generic_file_aio_read, | |
305 | .write = do_sync_write, | |
306 | .aio_write = generic_file_aio_write, | |
1da177e4 | 307 | .mmap = generic_file_mmap, |
5ffc4ef4 | 308 | .splice_read = generic_file_splice_read, |
1da177e4 LT |
309 | .fsync = file_fsync, |
310 | .open = hfsplus_file_open, | |
311 | .release = hfsplus_file_release, | |
7cc4bcc6 | 312 | .unlocked_ioctl = hfsplus_ioctl, |
1da177e4 LT |
313 | }; |
314 | ||
315 | struct inode *hfsplus_new_inode(struct super_block *sb, int mode) | |
316 | { | |
317 | struct inode *inode = new_inode(sb); | |
318 | if (!inode) | |
319 | return NULL; | |
320 | ||
1da177e4 LT |
321 | inode->i_ino = HFSPLUS_SB(sb).next_cnid++; |
322 | inode->i_mode = mode; | |
4ac8489a DH |
323 | inode->i_uid = current_fsuid(); |
324 | inode->i_gid = current_fsgid(); | |
1da177e4 LT |
325 | inode->i_nlink = 1; |
326 | inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME_SEC; | |
1da177e4 | 327 | INIT_LIST_HEAD(&HFSPLUS_I(inode).open_dir_list); |
895c23f8 | 328 | mutex_init(&HFSPLUS_I(inode).extents_lock); |
1da177e4 LT |
329 | atomic_set(&HFSPLUS_I(inode).opencnt, 0); |
330 | HFSPLUS_I(inode).flags = 0; | |
331 | memset(HFSPLUS_I(inode).first_extents, 0, sizeof(hfsplus_extent_rec)); | |
332 | memset(HFSPLUS_I(inode).cached_extents, 0, sizeof(hfsplus_extent_rec)); | |
333 | HFSPLUS_I(inode).alloc_blocks = 0; | |
334 | HFSPLUS_I(inode).first_blocks = 0; | |
335 | HFSPLUS_I(inode).cached_start = 0; | |
336 | HFSPLUS_I(inode).cached_blocks = 0; | |
337 | HFSPLUS_I(inode).phys_size = 0; | |
338 | HFSPLUS_I(inode).fs_blocks = 0; | |
339 | HFSPLUS_I(inode).rsrc_inode = NULL; | |
340 | if (S_ISDIR(inode->i_mode)) { | |
341 | inode->i_size = 2; | |
342 | HFSPLUS_SB(sb).folder_count++; | |
343 | inode->i_op = &hfsplus_dir_inode_operations; | |
344 | inode->i_fop = &hfsplus_dir_operations; | |
345 | } else if (S_ISREG(inode->i_mode)) { | |
346 | HFSPLUS_SB(sb).file_count++; | |
347 | inode->i_op = &hfsplus_file_inode_operations; | |
348 | inode->i_fop = &hfsplus_file_operations; | |
349 | inode->i_mapping->a_ops = &hfsplus_aops; | |
350 | HFSPLUS_I(inode).clump_blocks = HFSPLUS_SB(sb).data_clump_blocks; | |
351 | } else if (S_ISLNK(inode->i_mode)) { | |
352 | HFSPLUS_SB(sb).file_count++; | |
353 | inode->i_op = &page_symlink_inode_operations; | |
354 | inode->i_mapping->a_ops = &hfsplus_aops; | |
355 | HFSPLUS_I(inode).clump_blocks = 1; | |
356 | } else | |
357 | HFSPLUS_SB(sb).file_count++; | |
358 | insert_inode_hash(inode); | |
359 | mark_inode_dirty(inode); | |
360 | sb->s_dirt = 1; | |
361 | ||
362 | return inode; | |
363 | } | |
364 | ||
365 | void hfsplus_delete_inode(struct inode *inode) | |
366 | { | |
367 | struct super_block *sb = inode->i_sb; | |
368 | ||
369 | if (S_ISDIR(inode->i_mode)) { | |
370 | HFSPLUS_SB(sb).folder_count--; | |
371 | sb->s_dirt = 1; | |
372 | return; | |
373 | } | |
374 | HFSPLUS_SB(sb).file_count--; | |
375 | if (S_ISREG(inode->i_mode)) { | |
376 | if (!inode->i_nlink) { | |
377 | inode->i_size = 0; | |
378 | hfsplus_file_truncate(inode); | |
379 | } | |
380 | } else if (S_ISLNK(inode->i_mode)) { | |
381 | inode->i_size = 0; | |
382 | hfsplus_file_truncate(inode); | |
383 | } | |
384 | sb->s_dirt = 1; | |
385 | } | |
386 | ||
387 | void hfsplus_inode_read_fork(struct inode *inode, struct hfsplus_fork_raw *fork) | |
388 | { | |
389 | struct super_block *sb = inode->i_sb; | |
390 | u32 count; | |
391 | int i; | |
392 | ||
393 | memcpy(&HFSPLUS_I(inode).first_extents, &fork->extents, | |
394 | sizeof(hfsplus_extent_rec)); | |
395 | for (count = 0, i = 0; i < 8; i++) | |
396 | count += be32_to_cpu(fork->extents[i].block_count); | |
397 | HFSPLUS_I(inode).first_blocks = count; | |
398 | memset(HFSPLUS_I(inode).cached_extents, 0, sizeof(hfsplus_extent_rec)); | |
399 | HFSPLUS_I(inode).cached_start = 0; | |
400 | HFSPLUS_I(inode).cached_blocks = 0; | |
401 | ||
402 | HFSPLUS_I(inode).alloc_blocks = be32_to_cpu(fork->total_blocks); | |
403 | inode->i_size = HFSPLUS_I(inode).phys_size = be64_to_cpu(fork->total_size); | |
404 | HFSPLUS_I(inode).fs_blocks = (inode->i_size + sb->s_blocksize - 1) >> sb->s_blocksize_bits; | |
405 | inode_set_bytes(inode, HFSPLUS_I(inode).fs_blocks << sb->s_blocksize_bits); | |
406 | HFSPLUS_I(inode).clump_blocks = be32_to_cpu(fork->clump_size) >> HFSPLUS_SB(sb).alloc_blksz_shift; | |
407 | if (!HFSPLUS_I(inode).clump_blocks) | |
408 | HFSPLUS_I(inode).clump_blocks = HFSPLUS_IS_RSRC(inode) ? HFSPLUS_SB(sb).rsrc_clump_blocks : | |
409 | HFSPLUS_SB(sb).data_clump_blocks; | |
410 | } | |
411 | ||
412 | void hfsplus_inode_write_fork(struct inode *inode, struct hfsplus_fork_raw *fork) | |
413 | { | |
414 | memcpy(&fork->extents, &HFSPLUS_I(inode).first_extents, | |
415 | sizeof(hfsplus_extent_rec)); | |
416 | fork->total_size = cpu_to_be64(inode->i_size); | |
417 | fork->total_blocks = cpu_to_be32(HFSPLUS_I(inode).alloc_blocks); | |
418 | } | |
419 | ||
420 | int hfsplus_cat_read_inode(struct inode *inode, struct hfs_find_data *fd) | |
421 | { | |
422 | hfsplus_cat_entry entry; | |
423 | int res = 0; | |
424 | u16 type; | |
425 | ||
426 | type = hfs_bnode_read_u16(fd->bnode, fd->entryoffset); | |
427 | ||
428 | HFSPLUS_I(inode).dev = 0; | |
1da177e4 LT |
429 | if (type == HFSPLUS_FOLDER) { |
430 | struct hfsplus_cat_folder *folder = &entry.folder; | |
431 | ||
432 | if (fd->entrylength < sizeof(struct hfsplus_cat_folder)) | |
433 | /* panic? */; | |
434 | hfs_bnode_read(fd->bnode, &entry, fd->entryoffset, | |
435 | sizeof(struct hfsplus_cat_folder)); | |
436 | hfsplus_get_perms(inode, &folder->permissions, 1); | |
437 | inode->i_nlink = 1; | |
438 | inode->i_size = 2 + be32_to_cpu(folder->valence); | |
439 | inode->i_atime = hfsp_mt2ut(folder->access_date); | |
440 | inode->i_mtime = hfsp_mt2ut(folder->content_mod_date); | |
9a4cad95 RZ |
441 | inode->i_ctime = hfsp_mt2ut(folder->attribute_mod_date); |
442 | HFSPLUS_I(inode).create_date = folder->create_date; | |
1da177e4 LT |
443 | HFSPLUS_I(inode).fs_blocks = 0; |
444 | inode->i_op = &hfsplus_dir_inode_operations; | |
445 | inode->i_fop = &hfsplus_dir_operations; | |
446 | } else if (type == HFSPLUS_FILE) { | |
447 | struct hfsplus_cat_file *file = &entry.file; | |
448 | ||
449 | if (fd->entrylength < sizeof(struct hfsplus_cat_file)) | |
450 | /* panic? */; | |
451 | hfs_bnode_read(fd->bnode, &entry, fd->entryoffset, | |
452 | sizeof(struct hfsplus_cat_file)); | |
453 | ||
454 | hfsplus_inode_read_fork(inode, HFSPLUS_IS_DATA(inode) ? | |
455 | &file->data_fork : &file->rsrc_fork); | |
456 | hfsplus_get_perms(inode, &file->permissions, 0); | |
457 | inode->i_nlink = 1; | |
458 | if (S_ISREG(inode->i_mode)) { | |
459 | if (file->permissions.dev) | |
460 | inode->i_nlink = be32_to_cpu(file->permissions.dev); | |
461 | inode->i_op = &hfsplus_file_inode_operations; | |
462 | inode->i_fop = &hfsplus_file_operations; | |
463 | inode->i_mapping->a_ops = &hfsplus_aops; | |
464 | } else if (S_ISLNK(inode->i_mode)) { | |
465 | inode->i_op = &page_symlink_inode_operations; | |
466 | inode->i_mapping->a_ops = &hfsplus_aops; | |
467 | } else { | |
468 | init_special_inode(inode, inode->i_mode, | |
469 | be32_to_cpu(file->permissions.dev)); | |
470 | } | |
471 | inode->i_atime = hfsp_mt2ut(file->access_date); | |
472 | inode->i_mtime = hfsp_mt2ut(file->content_mod_date); | |
9a4cad95 RZ |
473 | inode->i_ctime = hfsp_mt2ut(file->attribute_mod_date); |
474 | HFSPLUS_I(inode).create_date = file->create_date; | |
1da177e4 | 475 | } else { |
634725a9 | 476 | printk(KERN_ERR "hfs: bad catalog entry used to create inode\n"); |
1da177e4 LT |
477 | res = -EIO; |
478 | } | |
479 | return res; | |
480 | } | |
481 | ||
482 | int hfsplus_cat_write_inode(struct inode *inode) | |
483 | { | |
484 | struct inode *main_inode = inode; | |
485 | struct hfs_find_data fd; | |
486 | hfsplus_cat_entry entry; | |
487 | ||
488 | if (HFSPLUS_IS_RSRC(inode)) | |
489 | main_inode = HFSPLUS_I(inode).rsrc_inode; | |
490 | ||
491 | if (!main_inode->i_nlink) | |
492 | return 0; | |
493 | ||
494 | if (hfs_find_init(HFSPLUS_SB(main_inode->i_sb).cat_tree, &fd)) | |
495 | /* panic? */ | |
496 | return -EIO; | |
497 | ||
498 | if (hfsplus_find_cat(main_inode->i_sb, main_inode->i_ino, &fd)) | |
499 | /* panic? */ | |
500 | goto out; | |
501 | ||
502 | if (S_ISDIR(main_inode->i_mode)) { | |
503 | struct hfsplus_cat_folder *folder = &entry.folder; | |
504 | ||
505 | if (fd.entrylength < sizeof(struct hfsplus_cat_folder)) | |
506 | /* panic? */; | |
507 | hfs_bnode_read(fd.bnode, &entry, fd.entryoffset, | |
508 | sizeof(struct hfsplus_cat_folder)); | |
509 | /* simple node checks? */ | |
510 | hfsplus_set_perms(inode, &folder->permissions); | |
511 | folder->access_date = hfsp_ut2mt(inode->i_atime); | |
512 | folder->content_mod_date = hfsp_ut2mt(inode->i_mtime); | |
513 | folder->attribute_mod_date = hfsp_ut2mt(inode->i_ctime); | |
514 | folder->valence = cpu_to_be32(inode->i_size - 2); | |
515 | hfs_bnode_write(fd.bnode, &entry, fd.entryoffset, | |
516 | sizeof(struct hfsplus_cat_folder)); | |
517 | } else if (HFSPLUS_IS_RSRC(inode)) { | |
518 | struct hfsplus_cat_file *file = &entry.file; | |
519 | hfs_bnode_read(fd.bnode, &entry, fd.entryoffset, | |
520 | sizeof(struct hfsplus_cat_file)); | |
521 | hfsplus_inode_write_fork(inode, &file->rsrc_fork); | |
522 | hfs_bnode_write(fd.bnode, &entry, fd.entryoffset, | |
523 | sizeof(struct hfsplus_cat_file)); | |
524 | } else { | |
525 | struct hfsplus_cat_file *file = &entry.file; | |
526 | ||
527 | if (fd.entrylength < sizeof(struct hfsplus_cat_file)) | |
528 | /* panic? */; | |
529 | hfs_bnode_read(fd.bnode, &entry, fd.entryoffset, | |
530 | sizeof(struct hfsplus_cat_file)); | |
531 | hfsplus_inode_write_fork(inode, &file->data_fork); | |
532 | if (S_ISREG(inode->i_mode)) | |
533 | HFSPLUS_I(inode).dev = inode->i_nlink; | |
534 | if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) | |
535 | HFSPLUS_I(inode).dev = kdev_t_to_nr(inode->i_rdev); | |
536 | hfsplus_set_perms(inode, &file->permissions); | |
537 | if ((file->permissions.rootflags | file->permissions.userflags) & HFSPLUS_FLG_IMMUTABLE) | |
538 | file->flags |= cpu_to_be16(HFSPLUS_FILE_LOCKED); | |
539 | else | |
540 | file->flags &= cpu_to_be16(~HFSPLUS_FILE_LOCKED); | |
541 | file->access_date = hfsp_ut2mt(inode->i_atime); | |
542 | file->content_mod_date = hfsp_ut2mt(inode->i_mtime); | |
543 | file->attribute_mod_date = hfsp_ut2mt(inode->i_ctime); | |
544 | hfs_bnode_write(fd.bnode, &entry, fd.entryoffset, | |
545 | sizeof(struct hfsplus_cat_file)); | |
546 | } | |
547 | out: | |
548 | hfs_find_exit(&fd); | |
549 | return 0; | |
550 | } |