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Commit | Line | Data |
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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 | 38 | hfsplus_get_block, |
6af502de | 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: | |
dd73a01a | 65 | tree = HFSPLUS_SB(sb)->ext_tree; |
1da177e4 LT |
66 | break; |
67 | case HFSPLUS_CAT_CNID: | |
dd73a01a | 68 | tree = HFSPLUS_SB(sb)->cat_tree; |
1da177e4 LT |
69 | break; |
70 | case HFSPLUS_ATTR_CNID: | |
dd73a01a | 71 | tree = HFSPLUS_SB(sb)->attr_tree; |
1da177e4 LT |
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; | |
6af502de | 175 | struct hfsplus_inode_info *hip; |
1da177e4 LT |
176 | int err; |
177 | ||
178 | if (HFSPLUS_IS_RSRC(dir) || strcmp(dentry->d_name.name, "rsrc")) | |
179 | goto out; | |
180 | ||
6af502de | 181 | inode = HFSPLUS_I(dir)->rsrc_inode; |
1da177e4 LT |
182 | if (inode) |
183 | goto out; | |
184 | ||
185 | inode = new_inode(sb); | |
186 | if (!inode) | |
187 | return ERR_PTR(-ENOMEM); | |
188 | ||
6af502de | 189 | hip = HFSPLUS_I(inode); |
1da177e4 | 190 | inode->i_ino = dir->i_ino; |
6af502de CH |
191 | INIT_LIST_HEAD(&hip->open_dir_list); |
192 | mutex_init(&hip->extents_lock); | |
b33b7921 CH |
193 | hip->extent_state = 0; |
194 | hip->flags = 0; | |
195 | set_bit(HFSPLUS_I_RSRC, &hip->flags); | |
1da177e4 | 196 | |
dd73a01a | 197 | hfs_find_init(HFSPLUS_SB(sb)->cat_tree, &fd); |
1da177e4 LT |
198 | err = hfsplus_find_cat(sb, dir->i_ino, &fd); |
199 | if (!err) | |
200 | err = hfsplus_cat_read_inode(inode, &fd); | |
201 | hfs_find_exit(&fd); | |
202 | if (err) { | |
203 | iput(inode); | |
204 | return ERR_PTR(err); | |
205 | } | |
6af502de CH |
206 | hip->rsrc_inode = dir; |
207 | HFSPLUS_I(dir)->rsrc_inode = inode; | |
1da177e4 | 208 | igrab(dir); |
58a818f5 CH |
209 | |
210 | /* | |
211 | * __mark_inode_dirty expects inodes to be hashed. Since we don't | |
212 | * want resource fork inodes in the regular inode space, we make them | |
213 | * appear hashed, but do not put on any lists. hlist_del() | |
214 | * will work fine and require no locking. | |
215 | */ | |
756acc2d | 216 | hlist_add_fake(&inode->i_hash); |
58a818f5 | 217 | |
1da177e4 | 218 | mark_inode_dirty(inode); |
1da177e4 LT |
219 | out: |
220 | d_add(dentry, inode); | |
221 | return NULL; | |
222 | } | |
223 | ||
224 | static void hfsplus_get_perms(struct inode *inode, struct hfsplus_perm *perms, int dir) | |
225 | { | |
dd73a01a | 226 | struct hfsplus_sb_info *sbi = HFSPLUS_SB(inode->i_sb); |
1da177e4 LT |
227 | u16 mode; |
228 | ||
229 | mode = be16_to_cpu(perms->mode); | |
230 | ||
231 | inode->i_uid = be32_to_cpu(perms->owner); | |
232 | if (!inode->i_uid && !mode) | |
dd73a01a | 233 | inode->i_uid = sbi->uid; |
1da177e4 LT |
234 | |
235 | inode->i_gid = be32_to_cpu(perms->group); | |
236 | if (!inode->i_gid && !mode) | |
dd73a01a | 237 | inode->i_gid = sbi->gid; |
1da177e4 LT |
238 | |
239 | if (dir) { | |
dd73a01a | 240 | mode = mode ? (mode & S_IALLUGO) : (S_IRWXUGO & ~(sbi->umask)); |
1da177e4 LT |
241 | mode |= S_IFDIR; |
242 | } else if (!mode) | |
dd73a01a | 243 | mode = S_IFREG | ((S_IRUGO|S_IWUGO) & ~(sbi->umask)); |
1da177e4 LT |
244 | inode->i_mode = mode; |
245 | ||
6af502de | 246 | HFSPLUS_I(inode)->userflags = perms->userflags; |
1da177e4 LT |
247 | if (perms->rootflags & HFSPLUS_FLG_IMMUTABLE) |
248 | inode->i_flags |= S_IMMUTABLE; | |
249 | else | |
250 | inode->i_flags &= ~S_IMMUTABLE; | |
251 | if (perms->rootflags & HFSPLUS_FLG_APPEND) | |
252 | inode->i_flags |= S_APPEND; | |
253 | else | |
254 | inode->i_flags &= ~S_APPEND; | |
255 | } | |
256 | ||
1da177e4 LT |
257 | static int hfsplus_file_open(struct inode *inode, struct file *file) |
258 | { | |
259 | if (HFSPLUS_IS_RSRC(inode)) | |
6af502de | 260 | inode = HFSPLUS_I(inode)->rsrc_inode; |
6e715294 AC |
261 | if (!(file->f_flags & O_LARGEFILE) && i_size_read(inode) > MAX_NON_LFS) |
262 | return -EOVERFLOW; | |
6af502de | 263 | atomic_inc(&HFSPLUS_I(inode)->opencnt); |
1da177e4 LT |
264 | return 0; |
265 | } | |
266 | ||
267 | static int hfsplus_file_release(struct inode *inode, struct file *file) | |
268 | { | |
269 | struct super_block *sb = inode->i_sb; | |
270 | ||
271 | if (HFSPLUS_IS_RSRC(inode)) | |
6af502de CH |
272 | inode = HFSPLUS_I(inode)->rsrc_inode; |
273 | if (atomic_dec_and_test(&HFSPLUS_I(inode)->opencnt)) { | |
1b1dcc1b | 274 | mutex_lock(&inode->i_mutex); |
1da177e4 LT |
275 | hfsplus_file_truncate(inode); |
276 | if (inode->i_flags & S_DEAD) { | |
dd73a01a CH |
277 | hfsplus_delete_cat(inode->i_ino, |
278 | HFSPLUS_SB(sb)->hidden_dir, NULL); | |
1da177e4 LT |
279 | hfsplus_delete_inode(inode); |
280 | } | |
1b1dcc1b | 281 | mutex_unlock(&inode->i_mutex); |
1da177e4 LT |
282 | } |
283 | return 0; | |
284 | } | |
285 | ||
d39aae9e CH |
286 | static int hfsplus_setattr(struct dentry *dentry, struct iattr *attr) |
287 | { | |
288 | struct inode *inode = dentry->d_inode; | |
289 | int error; | |
290 | ||
291 | error = inode_change_ok(inode, attr); | |
292 | if (error) | |
293 | return error; | |
1025774c CH |
294 | |
295 | if ((attr->ia_valid & ATTR_SIZE) && | |
296 | attr->ia_size != i_size_read(inode)) { | |
297 | error = vmtruncate(inode, attr->ia_size); | |
298 | if (error) | |
299 | return error; | |
300 | } | |
301 | ||
302 | setattr_copy(inode, attr); | |
303 | mark_inode_dirty(inode); | |
304 | return 0; | |
d39aae9e CH |
305 | } |
306 | ||
eb29d66d | 307 | int hfsplus_file_fsync(struct file *file, int datasync) |
b5fc510c | 308 | { |
28146976 | 309 | struct inode *inode = file->f_mapping->host; |
e3494705 | 310 | struct hfsplus_inode_info *hip = HFSPLUS_I(inode); |
28146976 | 311 | struct hfsplus_sb_info *sbi = HFSPLUS_SB(inode->i_sb); |
e3494705 | 312 | int error = 0, error2; |
b5fc510c | 313 | |
28146976 CH |
314 | /* |
315 | * Sync inode metadata into the catalog and extent trees. | |
316 | */ | |
317 | sync_inode_metadata(inode, 1); | |
318 | ||
319 | /* | |
320 | * And explicitly write out the btrees. | |
321 | */ | |
e3494705 CH |
322 | if (test_and_clear_bit(HFSPLUS_I_CAT_DIRTY, &hip->flags)) |
323 | error = filemap_write_and_wait(sbi->cat_tree->inode->i_mapping); | |
324 | ||
325 | if (test_and_clear_bit(HFSPLUS_I_EXT_DIRTY, &hip->flags)) { | |
326 | error2 = filemap_write_and_wait(sbi->ext_tree->inode->i_mapping); | |
327 | if (!error) | |
328 | error = error2; | |
329 | } | |
330 | ||
331 | if (test_and_clear_bit(HFSPLUS_I_ALLOC_DIRTY, &hip->flags)) { | |
332 | error2 = filemap_write_and_wait(sbi->alloc_file->i_mapping); | |
333 | if (!error) | |
334 | error = error2; | |
335 | } | |
336 | ||
28146976 | 337 | return error; |
b5fc510c AV |
338 | } |
339 | ||
92e1d5be | 340 | static const struct inode_operations hfsplus_file_inode_operations = { |
1da177e4 LT |
341 | .lookup = hfsplus_file_lookup, |
342 | .truncate = hfsplus_file_truncate, | |
d39aae9e | 343 | .setattr = hfsplus_setattr, |
1da177e4 LT |
344 | .setxattr = hfsplus_setxattr, |
345 | .getxattr = hfsplus_getxattr, | |
346 | .listxattr = hfsplus_listxattr, | |
347 | }; | |
348 | ||
4b6f5d20 | 349 | static const struct file_operations hfsplus_file_operations = { |
1da177e4 | 350 | .llseek = generic_file_llseek, |
543ade1f BP |
351 | .read = do_sync_read, |
352 | .aio_read = generic_file_aio_read, | |
353 | .write = do_sync_write, | |
354 | .aio_write = generic_file_aio_write, | |
1da177e4 | 355 | .mmap = generic_file_mmap, |
5ffc4ef4 | 356 | .splice_read = generic_file_splice_read, |
b5fc510c | 357 | .fsync = hfsplus_file_fsync, |
1da177e4 LT |
358 | .open = hfsplus_file_open, |
359 | .release = hfsplus_file_release, | |
7cc4bcc6 | 360 | .unlocked_ioctl = hfsplus_ioctl, |
1da177e4 LT |
361 | }; |
362 | ||
363 | struct inode *hfsplus_new_inode(struct super_block *sb, int mode) | |
364 | { | |
dd73a01a | 365 | struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb); |
1da177e4 | 366 | struct inode *inode = new_inode(sb); |
6af502de | 367 | struct hfsplus_inode_info *hip; |
dd73a01a | 368 | |
1da177e4 LT |
369 | if (!inode) |
370 | return NULL; | |
371 | ||
dd73a01a | 372 | inode->i_ino = sbi->next_cnid++; |
1da177e4 | 373 | inode->i_mode = mode; |
4ac8489a DH |
374 | inode->i_uid = current_fsuid(); |
375 | inode->i_gid = current_fsgid(); | |
1da177e4 LT |
376 | inode->i_nlink = 1; |
377 | inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME_SEC; | |
6af502de CH |
378 | |
379 | hip = HFSPLUS_I(inode); | |
380 | INIT_LIST_HEAD(&hip->open_dir_list); | |
381 | mutex_init(&hip->extents_lock); | |
382 | atomic_set(&hip->opencnt, 0); | |
b33b7921 | 383 | hip->extent_state = 0; |
6af502de CH |
384 | hip->flags = 0; |
385 | memset(hip->first_extents, 0, sizeof(hfsplus_extent_rec)); | |
386 | memset(hip->cached_extents, 0, sizeof(hfsplus_extent_rec)); | |
387 | hip->alloc_blocks = 0; | |
388 | hip->first_blocks = 0; | |
389 | hip->cached_start = 0; | |
390 | hip->cached_blocks = 0; | |
391 | hip->phys_size = 0; | |
392 | hip->fs_blocks = 0; | |
393 | hip->rsrc_inode = NULL; | |
1da177e4 LT |
394 | if (S_ISDIR(inode->i_mode)) { |
395 | inode->i_size = 2; | |
dd73a01a | 396 | sbi->folder_count++; |
1da177e4 LT |
397 | inode->i_op = &hfsplus_dir_inode_operations; |
398 | inode->i_fop = &hfsplus_dir_operations; | |
399 | } else if (S_ISREG(inode->i_mode)) { | |
dd73a01a | 400 | sbi->file_count++; |
1da177e4 LT |
401 | inode->i_op = &hfsplus_file_inode_operations; |
402 | inode->i_fop = &hfsplus_file_operations; | |
403 | inode->i_mapping->a_ops = &hfsplus_aops; | |
6af502de | 404 | hip->clump_blocks = sbi->data_clump_blocks; |
1da177e4 | 405 | } else if (S_ISLNK(inode->i_mode)) { |
dd73a01a | 406 | sbi->file_count++; |
1da177e4 LT |
407 | inode->i_op = &page_symlink_inode_operations; |
408 | inode->i_mapping->a_ops = &hfsplus_aops; | |
6af502de | 409 | hip->clump_blocks = 1; |
1da177e4 | 410 | } else |
dd73a01a | 411 | sbi->file_count++; |
1da177e4 LT |
412 | insert_inode_hash(inode); |
413 | mark_inode_dirty(inode); | |
414 | sb->s_dirt = 1; | |
415 | ||
416 | return inode; | |
417 | } | |
418 | ||
419 | void hfsplus_delete_inode(struct inode *inode) | |
420 | { | |
421 | struct super_block *sb = inode->i_sb; | |
422 | ||
423 | if (S_ISDIR(inode->i_mode)) { | |
dd73a01a | 424 | HFSPLUS_SB(sb)->folder_count--; |
1da177e4 LT |
425 | sb->s_dirt = 1; |
426 | return; | |
427 | } | |
dd73a01a | 428 | HFSPLUS_SB(sb)->file_count--; |
1da177e4 LT |
429 | if (S_ISREG(inode->i_mode)) { |
430 | if (!inode->i_nlink) { | |
431 | inode->i_size = 0; | |
432 | hfsplus_file_truncate(inode); | |
433 | } | |
434 | } else if (S_ISLNK(inode->i_mode)) { | |
435 | inode->i_size = 0; | |
436 | hfsplus_file_truncate(inode); | |
437 | } | |
438 | sb->s_dirt = 1; | |
439 | } | |
440 | ||
441 | void hfsplus_inode_read_fork(struct inode *inode, struct hfsplus_fork_raw *fork) | |
442 | { | |
443 | struct super_block *sb = inode->i_sb; | |
dd73a01a | 444 | struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb); |
6af502de | 445 | struct hfsplus_inode_info *hip = HFSPLUS_I(inode); |
1da177e4 LT |
446 | u32 count; |
447 | int i; | |
448 | ||
6af502de | 449 | memcpy(&hip->first_extents, &fork->extents, sizeof(hfsplus_extent_rec)); |
1da177e4 LT |
450 | for (count = 0, i = 0; i < 8; i++) |
451 | count += be32_to_cpu(fork->extents[i].block_count); | |
6af502de CH |
452 | hip->first_blocks = count; |
453 | memset(hip->cached_extents, 0, sizeof(hfsplus_extent_rec)); | |
454 | hip->cached_start = 0; | |
455 | hip->cached_blocks = 0; | |
456 | ||
457 | hip->alloc_blocks = be32_to_cpu(fork->total_blocks); | |
458 | hip->phys_size = inode->i_size = be64_to_cpu(fork->total_size); | |
459 | hip->fs_blocks = | |
460 | (inode->i_size + sb->s_blocksize - 1) >> sb->s_blocksize_bits; | |
461 | inode_set_bytes(inode, hip->fs_blocks << sb->s_blocksize_bits); | |
462 | hip->clump_blocks = | |
dd73a01a | 463 | be32_to_cpu(fork->clump_size) >> sbi->alloc_blksz_shift; |
6af502de CH |
464 | if (!hip->clump_blocks) { |
465 | hip->clump_blocks = HFSPLUS_IS_RSRC(inode) ? | |
dd73a01a CH |
466 | sbi->rsrc_clump_blocks : |
467 | sbi->data_clump_blocks; | |
468 | } | |
1da177e4 LT |
469 | } |
470 | ||
471 | void hfsplus_inode_write_fork(struct inode *inode, struct hfsplus_fork_raw *fork) | |
472 | { | |
6af502de | 473 | memcpy(&fork->extents, &HFSPLUS_I(inode)->first_extents, |
1da177e4 LT |
474 | sizeof(hfsplus_extent_rec)); |
475 | fork->total_size = cpu_to_be64(inode->i_size); | |
6af502de | 476 | fork->total_blocks = cpu_to_be32(HFSPLUS_I(inode)->alloc_blocks); |
1da177e4 LT |
477 | } |
478 | ||
479 | int hfsplus_cat_read_inode(struct inode *inode, struct hfs_find_data *fd) | |
480 | { | |
481 | hfsplus_cat_entry entry; | |
482 | int res = 0; | |
483 | u16 type; | |
484 | ||
485 | type = hfs_bnode_read_u16(fd->bnode, fd->entryoffset); | |
486 | ||
f6089ff8 | 487 | HFSPLUS_I(inode)->linkid = 0; |
1da177e4 LT |
488 | if (type == HFSPLUS_FOLDER) { |
489 | struct hfsplus_cat_folder *folder = &entry.folder; | |
490 | ||
491 | if (fd->entrylength < sizeof(struct hfsplus_cat_folder)) | |
492 | /* panic? */; | |
493 | hfs_bnode_read(fd->bnode, &entry, fd->entryoffset, | |
494 | sizeof(struct hfsplus_cat_folder)); | |
495 | hfsplus_get_perms(inode, &folder->permissions, 1); | |
496 | inode->i_nlink = 1; | |
497 | inode->i_size = 2 + be32_to_cpu(folder->valence); | |
498 | inode->i_atime = hfsp_mt2ut(folder->access_date); | |
499 | inode->i_mtime = hfsp_mt2ut(folder->content_mod_date); | |
9a4cad95 | 500 | inode->i_ctime = hfsp_mt2ut(folder->attribute_mod_date); |
6af502de CH |
501 | HFSPLUS_I(inode)->create_date = folder->create_date; |
502 | HFSPLUS_I(inode)->fs_blocks = 0; | |
1da177e4 LT |
503 | inode->i_op = &hfsplus_dir_inode_operations; |
504 | inode->i_fop = &hfsplus_dir_operations; | |
505 | } else if (type == HFSPLUS_FILE) { | |
506 | struct hfsplus_cat_file *file = &entry.file; | |
507 | ||
508 | if (fd->entrylength < sizeof(struct hfsplus_cat_file)) | |
509 | /* panic? */; | |
510 | hfs_bnode_read(fd->bnode, &entry, fd->entryoffset, | |
511 | sizeof(struct hfsplus_cat_file)); | |
512 | ||
b33b7921 CH |
513 | hfsplus_inode_read_fork(inode, HFSPLUS_IS_RSRC(inode) ? |
514 | &file->rsrc_fork : &file->data_fork); | |
1da177e4 LT |
515 | hfsplus_get_perms(inode, &file->permissions, 0); |
516 | inode->i_nlink = 1; | |
517 | if (S_ISREG(inode->i_mode)) { | |
518 | if (file->permissions.dev) | |
519 | inode->i_nlink = be32_to_cpu(file->permissions.dev); | |
520 | inode->i_op = &hfsplus_file_inode_operations; | |
521 | inode->i_fop = &hfsplus_file_operations; | |
522 | inode->i_mapping->a_ops = &hfsplus_aops; | |
523 | } else if (S_ISLNK(inode->i_mode)) { | |
524 | inode->i_op = &page_symlink_inode_operations; | |
525 | inode->i_mapping->a_ops = &hfsplus_aops; | |
526 | } else { | |
527 | init_special_inode(inode, inode->i_mode, | |
528 | be32_to_cpu(file->permissions.dev)); | |
529 | } | |
530 | inode->i_atime = hfsp_mt2ut(file->access_date); | |
531 | inode->i_mtime = hfsp_mt2ut(file->content_mod_date); | |
9a4cad95 | 532 | inode->i_ctime = hfsp_mt2ut(file->attribute_mod_date); |
6af502de | 533 | HFSPLUS_I(inode)->create_date = file->create_date; |
1da177e4 | 534 | } else { |
634725a9 | 535 | printk(KERN_ERR "hfs: bad catalog entry used to create inode\n"); |
1da177e4 LT |
536 | res = -EIO; |
537 | } | |
538 | return res; | |
539 | } | |
540 | ||
541 | int hfsplus_cat_write_inode(struct inode *inode) | |
542 | { | |
543 | struct inode *main_inode = inode; | |
544 | struct hfs_find_data fd; | |
545 | hfsplus_cat_entry entry; | |
546 | ||
547 | if (HFSPLUS_IS_RSRC(inode)) | |
6af502de | 548 | main_inode = HFSPLUS_I(inode)->rsrc_inode; |
1da177e4 LT |
549 | |
550 | if (!main_inode->i_nlink) | |
551 | return 0; | |
552 | ||
dd73a01a | 553 | if (hfs_find_init(HFSPLUS_SB(main_inode->i_sb)->cat_tree, &fd)) |
1da177e4 LT |
554 | /* panic? */ |
555 | return -EIO; | |
556 | ||
557 | if (hfsplus_find_cat(main_inode->i_sb, main_inode->i_ino, &fd)) | |
558 | /* panic? */ | |
559 | goto out; | |
560 | ||
561 | if (S_ISDIR(main_inode->i_mode)) { | |
562 | struct hfsplus_cat_folder *folder = &entry.folder; | |
563 | ||
564 | if (fd.entrylength < sizeof(struct hfsplus_cat_folder)) | |
565 | /* panic? */; | |
566 | hfs_bnode_read(fd.bnode, &entry, fd.entryoffset, | |
567 | sizeof(struct hfsplus_cat_folder)); | |
568 | /* simple node checks? */ | |
90e61690 | 569 | hfsplus_cat_set_perms(inode, &folder->permissions); |
1da177e4 LT |
570 | folder->access_date = hfsp_ut2mt(inode->i_atime); |
571 | folder->content_mod_date = hfsp_ut2mt(inode->i_mtime); | |
572 | folder->attribute_mod_date = hfsp_ut2mt(inode->i_ctime); | |
573 | folder->valence = cpu_to_be32(inode->i_size - 2); | |
574 | hfs_bnode_write(fd.bnode, &entry, fd.entryoffset, | |
575 | sizeof(struct hfsplus_cat_folder)); | |
576 | } else if (HFSPLUS_IS_RSRC(inode)) { | |
577 | struct hfsplus_cat_file *file = &entry.file; | |
578 | hfs_bnode_read(fd.bnode, &entry, fd.entryoffset, | |
579 | sizeof(struct hfsplus_cat_file)); | |
580 | hfsplus_inode_write_fork(inode, &file->rsrc_fork); | |
581 | hfs_bnode_write(fd.bnode, &entry, fd.entryoffset, | |
582 | sizeof(struct hfsplus_cat_file)); | |
583 | } else { | |
584 | struct hfsplus_cat_file *file = &entry.file; | |
585 | ||
586 | if (fd.entrylength < sizeof(struct hfsplus_cat_file)) | |
587 | /* panic? */; | |
588 | hfs_bnode_read(fd.bnode, &entry, fd.entryoffset, | |
589 | sizeof(struct hfsplus_cat_file)); | |
590 | hfsplus_inode_write_fork(inode, &file->data_fork); | |
90e61690 | 591 | hfsplus_cat_set_perms(inode, &file->permissions); |
1da177e4 LT |
592 | if ((file->permissions.rootflags | file->permissions.userflags) & HFSPLUS_FLG_IMMUTABLE) |
593 | file->flags |= cpu_to_be16(HFSPLUS_FILE_LOCKED); | |
594 | else | |
595 | file->flags &= cpu_to_be16(~HFSPLUS_FILE_LOCKED); | |
596 | file->access_date = hfsp_ut2mt(inode->i_atime); | |
597 | file->content_mod_date = hfsp_ut2mt(inode->i_mtime); | |
598 | file->attribute_mod_date = hfsp_ut2mt(inode->i_ctime); | |
599 | hfs_bnode_write(fd.bnode, &entry, fd.entryoffset, | |
600 | sizeof(struct hfsplus_cat_file)); | |
601 | } | |
e3494705 CH |
602 | |
603 | set_bit(HFSPLUS_I_CAT_DIRTY, &HFSPLUS_I(inode)->flags); | |
1da177e4 LT |
604 | out: |
605 | hfs_find_exit(&fd); | |
606 | return 0; | |
607 | } |