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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); | |
193 | hip->flags = HFSPLUS_FLG_RSRC; | |
1da177e4 | 194 | |
dd73a01a | 195 | hfs_find_init(HFSPLUS_SB(sb)->cat_tree, &fd); |
1da177e4 LT |
196 | err = hfsplus_find_cat(sb, dir->i_ino, &fd); |
197 | if (!err) | |
198 | err = hfsplus_cat_read_inode(inode, &fd); | |
199 | hfs_find_exit(&fd); | |
200 | if (err) { | |
201 | iput(inode); | |
202 | return ERR_PTR(err); | |
203 | } | |
6af502de CH |
204 | hip->rsrc_inode = dir; |
205 | HFSPLUS_I(dir)->rsrc_inode = inode; | |
1da177e4 | 206 | igrab(dir); |
58a818f5 CH |
207 | |
208 | /* | |
209 | * __mark_inode_dirty expects inodes to be hashed. Since we don't | |
210 | * want resource fork inodes in the regular inode space, we make them | |
211 | * appear hashed, but do not put on any lists. hlist_del() | |
212 | * will work fine and require no locking. | |
213 | */ | |
214 | inode->i_hash.pprev = &inode->i_hash.next; | |
215 | ||
1da177e4 | 216 | mark_inode_dirty(inode); |
1da177e4 LT |
217 | out: |
218 | d_add(dentry, inode); | |
219 | return NULL; | |
220 | } | |
221 | ||
222 | static void hfsplus_get_perms(struct inode *inode, struct hfsplus_perm *perms, int dir) | |
223 | { | |
dd73a01a | 224 | struct hfsplus_sb_info *sbi = HFSPLUS_SB(inode->i_sb); |
1da177e4 LT |
225 | u16 mode; |
226 | ||
227 | mode = be16_to_cpu(perms->mode); | |
228 | ||
229 | inode->i_uid = be32_to_cpu(perms->owner); | |
230 | if (!inode->i_uid && !mode) | |
dd73a01a | 231 | inode->i_uid = sbi->uid; |
1da177e4 LT |
232 | |
233 | inode->i_gid = be32_to_cpu(perms->group); | |
234 | if (!inode->i_gid && !mode) | |
dd73a01a | 235 | inode->i_gid = sbi->gid; |
1da177e4 LT |
236 | |
237 | if (dir) { | |
dd73a01a | 238 | mode = mode ? (mode & S_IALLUGO) : (S_IRWXUGO & ~(sbi->umask)); |
1da177e4 LT |
239 | mode |= S_IFDIR; |
240 | } else if (!mode) | |
dd73a01a | 241 | mode = S_IFREG | ((S_IRUGO|S_IWUGO) & ~(sbi->umask)); |
1da177e4 LT |
242 | inode->i_mode = mode; |
243 | ||
6af502de CH |
244 | HFSPLUS_I(inode)->rootflags = perms->rootflags; |
245 | HFSPLUS_I(inode)->userflags = perms->userflags; | |
1da177e4 LT |
246 | if (perms->rootflags & HFSPLUS_FLG_IMMUTABLE) |
247 | inode->i_flags |= S_IMMUTABLE; | |
248 | else | |
249 | inode->i_flags &= ~S_IMMUTABLE; | |
250 | if (perms->rootflags & HFSPLUS_FLG_APPEND) | |
251 | inode->i_flags |= S_APPEND; | |
252 | else | |
253 | inode->i_flags &= ~S_APPEND; | |
254 | } | |
255 | ||
256 | static void hfsplus_set_perms(struct inode *inode, struct hfsplus_perm *perms) | |
257 | { | |
258 | if (inode->i_flags & S_IMMUTABLE) | |
259 | perms->rootflags |= HFSPLUS_FLG_IMMUTABLE; | |
260 | else | |
261 | perms->rootflags &= ~HFSPLUS_FLG_IMMUTABLE; | |
262 | if (inode->i_flags & S_APPEND) | |
263 | perms->rootflags |= HFSPLUS_FLG_APPEND; | |
264 | else | |
265 | perms->rootflags &= ~HFSPLUS_FLG_APPEND; | |
6af502de | 266 | perms->userflags = HFSPLUS_I(inode)->userflags; |
1da177e4 LT |
267 | perms->mode = cpu_to_be16(inode->i_mode); |
268 | perms->owner = cpu_to_be32(inode->i_uid); | |
269 | perms->group = cpu_to_be32(inode->i_gid); | |
f6089ff8 CH |
270 | |
271 | if (S_ISREG(inode->i_mode)) | |
272 | perms->dev = cpu_to_be32(inode->i_nlink); | |
273 | else if (S_ISBLK(inode->i_mode) || S_ISCHR(inode->i_mode)) | |
274 | perms->dev = cpu_to_be32(inode->i_rdev); | |
275 | else | |
276 | perms->dev = 0; | |
1da177e4 LT |
277 | } |
278 | ||
1da177e4 LT |
279 | static int hfsplus_file_open(struct inode *inode, struct file *file) |
280 | { | |
281 | if (HFSPLUS_IS_RSRC(inode)) | |
6af502de | 282 | inode = HFSPLUS_I(inode)->rsrc_inode; |
6e715294 AC |
283 | if (!(file->f_flags & O_LARGEFILE) && i_size_read(inode) > MAX_NON_LFS) |
284 | return -EOVERFLOW; | |
6af502de | 285 | atomic_inc(&HFSPLUS_I(inode)->opencnt); |
1da177e4 LT |
286 | return 0; |
287 | } | |
288 | ||
289 | static int hfsplus_file_release(struct inode *inode, struct file *file) | |
290 | { | |
291 | struct super_block *sb = inode->i_sb; | |
292 | ||
293 | if (HFSPLUS_IS_RSRC(inode)) | |
6af502de CH |
294 | inode = HFSPLUS_I(inode)->rsrc_inode; |
295 | if (atomic_dec_and_test(&HFSPLUS_I(inode)->opencnt)) { | |
1b1dcc1b | 296 | mutex_lock(&inode->i_mutex); |
1da177e4 LT |
297 | hfsplus_file_truncate(inode); |
298 | if (inode->i_flags & S_DEAD) { | |
dd73a01a CH |
299 | hfsplus_delete_cat(inode->i_ino, |
300 | HFSPLUS_SB(sb)->hidden_dir, NULL); | |
1da177e4 LT |
301 | hfsplus_delete_inode(inode); |
302 | } | |
1b1dcc1b | 303 | mutex_unlock(&inode->i_mutex); |
1da177e4 LT |
304 | } |
305 | return 0; | |
306 | } | |
307 | ||
d39aae9e CH |
308 | static int hfsplus_setattr(struct dentry *dentry, struct iattr *attr) |
309 | { | |
310 | struct inode *inode = dentry->d_inode; | |
311 | int error; | |
312 | ||
313 | error = inode_change_ok(inode, attr); | |
314 | if (error) | |
315 | return error; | |
1025774c CH |
316 | |
317 | if ((attr->ia_valid & ATTR_SIZE) && | |
318 | attr->ia_size != i_size_read(inode)) { | |
319 | error = vmtruncate(inode, attr->ia_size); | |
320 | if (error) | |
321 | return error; | |
322 | } | |
323 | ||
324 | setattr_copy(inode, attr); | |
325 | mark_inode_dirty(inode); | |
326 | return 0; | |
d39aae9e CH |
327 | } |
328 | ||
b5fc510c AV |
329 | static int hfsplus_file_fsync(struct file *filp, int datasync) |
330 | { | |
331 | struct inode *inode = filp->f_mapping->host; | |
332 | struct super_block * sb; | |
333 | int ret, err; | |
334 | ||
335 | /* sync the inode to buffers */ | |
336 | ret = write_inode_now(inode, 0); | |
337 | ||
338 | /* sync the superblock to buffers */ | |
339 | sb = inode->i_sb; | |
340 | if (sb->s_dirt) { | |
341 | if (!(sb->s_flags & MS_RDONLY)) | |
342 | hfsplus_sync_fs(sb, 1); | |
343 | else | |
344 | sb->s_dirt = 0; | |
345 | } | |
346 | ||
347 | /* .. finally sync the buffers to disk */ | |
348 | err = sync_blockdev(sb->s_bdev); | |
349 | if (!ret) | |
350 | ret = err; | |
351 | return ret; | |
352 | } | |
353 | ||
92e1d5be | 354 | static const struct inode_operations hfsplus_file_inode_operations = { |
1da177e4 LT |
355 | .lookup = hfsplus_file_lookup, |
356 | .truncate = hfsplus_file_truncate, | |
d39aae9e | 357 | .setattr = hfsplus_setattr, |
1da177e4 LT |
358 | .setxattr = hfsplus_setxattr, |
359 | .getxattr = hfsplus_getxattr, | |
360 | .listxattr = hfsplus_listxattr, | |
361 | }; | |
362 | ||
4b6f5d20 | 363 | static const struct file_operations hfsplus_file_operations = { |
1da177e4 | 364 | .llseek = generic_file_llseek, |
543ade1f BP |
365 | .read = do_sync_read, |
366 | .aio_read = generic_file_aio_read, | |
367 | .write = do_sync_write, | |
368 | .aio_write = generic_file_aio_write, | |
1da177e4 | 369 | .mmap = generic_file_mmap, |
5ffc4ef4 | 370 | .splice_read = generic_file_splice_read, |
b5fc510c | 371 | .fsync = hfsplus_file_fsync, |
1da177e4 LT |
372 | .open = hfsplus_file_open, |
373 | .release = hfsplus_file_release, | |
7cc4bcc6 | 374 | .unlocked_ioctl = hfsplus_ioctl, |
1da177e4 LT |
375 | }; |
376 | ||
377 | struct inode *hfsplus_new_inode(struct super_block *sb, int mode) | |
378 | { | |
dd73a01a | 379 | struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb); |
1da177e4 | 380 | struct inode *inode = new_inode(sb); |
6af502de | 381 | struct hfsplus_inode_info *hip; |
dd73a01a | 382 | |
1da177e4 LT |
383 | if (!inode) |
384 | return NULL; | |
385 | ||
dd73a01a | 386 | inode->i_ino = sbi->next_cnid++; |
1da177e4 | 387 | inode->i_mode = mode; |
4ac8489a DH |
388 | inode->i_uid = current_fsuid(); |
389 | inode->i_gid = current_fsgid(); | |
1da177e4 LT |
390 | inode->i_nlink = 1; |
391 | inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME_SEC; | |
6af502de CH |
392 | |
393 | hip = HFSPLUS_I(inode); | |
394 | INIT_LIST_HEAD(&hip->open_dir_list); | |
395 | mutex_init(&hip->extents_lock); | |
396 | atomic_set(&hip->opencnt, 0); | |
397 | hip->flags = 0; | |
398 | memset(hip->first_extents, 0, sizeof(hfsplus_extent_rec)); | |
399 | memset(hip->cached_extents, 0, sizeof(hfsplus_extent_rec)); | |
400 | hip->alloc_blocks = 0; | |
401 | hip->first_blocks = 0; | |
402 | hip->cached_start = 0; | |
403 | hip->cached_blocks = 0; | |
404 | hip->phys_size = 0; | |
405 | hip->fs_blocks = 0; | |
406 | hip->rsrc_inode = NULL; | |
1da177e4 LT |
407 | if (S_ISDIR(inode->i_mode)) { |
408 | inode->i_size = 2; | |
dd73a01a | 409 | sbi->folder_count++; |
1da177e4 LT |
410 | inode->i_op = &hfsplus_dir_inode_operations; |
411 | inode->i_fop = &hfsplus_dir_operations; | |
412 | } else if (S_ISREG(inode->i_mode)) { | |
dd73a01a | 413 | sbi->file_count++; |
1da177e4 LT |
414 | inode->i_op = &hfsplus_file_inode_operations; |
415 | inode->i_fop = &hfsplus_file_operations; | |
416 | inode->i_mapping->a_ops = &hfsplus_aops; | |
6af502de | 417 | hip->clump_blocks = sbi->data_clump_blocks; |
1da177e4 | 418 | } else if (S_ISLNK(inode->i_mode)) { |
dd73a01a | 419 | sbi->file_count++; |
1da177e4 LT |
420 | inode->i_op = &page_symlink_inode_operations; |
421 | inode->i_mapping->a_ops = &hfsplus_aops; | |
6af502de | 422 | hip->clump_blocks = 1; |
1da177e4 | 423 | } else |
dd73a01a | 424 | sbi->file_count++; |
1da177e4 LT |
425 | insert_inode_hash(inode); |
426 | mark_inode_dirty(inode); | |
427 | sb->s_dirt = 1; | |
428 | ||
429 | return inode; | |
430 | } | |
431 | ||
432 | void hfsplus_delete_inode(struct inode *inode) | |
433 | { | |
434 | struct super_block *sb = inode->i_sb; | |
435 | ||
436 | if (S_ISDIR(inode->i_mode)) { | |
dd73a01a | 437 | HFSPLUS_SB(sb)->folder_count--; |
1da177e4 LT |
438 | sb->s_dirt = 1; |
439 | return; | |
440 | } | |
dd73a01a | 441 | HFSPLUS_SB(sb)->file_count--; |
1da177e4 LT |
442 | if (S_ISREG(inode->i_mode)) { |
443 | if (!inode->i_nlink) { | |
444 | inode->i_size = 0; | |
445 | hfsplus_file_truncate(inode); | |
446 | } | |
447 | } else if (S_ISLNK(inode->i_mode)) { | |
448 | inode->i_size = 0; | |
449 | hfsplus_file_truncate(inode); | |
450 | } | |
451 | sb->s_dirt = 1; | |
452 | } | |
453 | ||
454 | void hfsplus_inode_read_fork(struct inode *inode, struct hfsplus_fork_raw *fork) | |
455 | { | |
456 | struct super_block *sb = inode->i_sb; | |
dd73a01a | 457 | struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb); |
6af502de | 458 | struct hfsplus_inode_info *hip = HFSPLUS_I(inode); |
1da177e4 LT |
459 | u32 count; |
460 | int i; | |
461 | ||
6af502de | 462 | memcpy(&hip->first_extents, &fork->extents, sizeof(hfsplus_extent_rec)); |
1da177e4 LT |
463 | for (count = 0, i = 0; i < 8; i++) |
464 | count += be32_to_cpu(fork->extents[i].block_count); | |
6af502de CH |
465 | hip->first_blocks = count; |
466 | memset(hip->cached_extents, 0, sizeof(hfsplus_extent_rec)); | |
467 | hip->cached_start = 0; | |
468 | hip->cached_blocks = 0; | |
469 | ||
470 | hip->alloc_blocks = be32_to_cpu(fork->total_blocks); | |
471 | hip->phys_size = inode->i_size = be64_to_cpu(fork->total_size); | |
472 | hip->fs_blocks = | |
473 | (inode->i_size + sb->s_blocksize - 1) >> sb->s_blocksize_bits; | |
474 | inode_set_bytes(inode, hip->fs_blocks << sb->s_blocksize_bits); | |
475 | hip->clump_blocks = | |
dd73a01a | 476 | be32_to_cpu(fork->clump_size) >> sbi->alloc_blksz_shift; |
6af502de CH |
477 | if (!hip->clump_blocks) { |
478 | hip->clump_blocks = HFSPLUS_IS_RSRC(inode) ? | |
dd73a01a CH |
479 | sbi->rsrc_clump_blocks : |
480 | sbi->data_clump_blocks; | |
481 | } | |
1da177e4 LT |
482 | } |
483 | ||
484 | void hfsplus_inode_write_fork(struct inode *inode, struct hfsplus_fork_raw *fork) | |
485 | { | |
6af502de | 486 | memcpy(&fork->extents, &HFSPLUS_I(inode)->first_extents, |
1da177e4 LT |
487 | sizeof(hfsplus_extent_rec)); |
488 | fork->total_size = cpu_to_be64(inode->i_size); | |
6af502de | 489 | fork->total_blocks = cpu_to_be32(HFSPLUS_I(inode)->alloc_blocks); |
1da177e4 LT |
490 | } |
491 | ||
492 | int hfsplus_cat_read_inode(struct inode *inode, struct hfs_find_data *fd) | |
493 | { | |
494 | hfsplus_cat_entry entry; | |
495 | int res = 0; | |
496 | u16 type; | |
497 | ||
498 | type = hfs_bnode_read_u16(fd->bnode, fd->entryoffset); | |
499 | ||
f6089ff8 | 500 | HFSPLUS_I(inode)->linkid = 0; |
1da177e4 LT |
501 | if (type == HFSPLUS_FOLDER) { |
502 | struct hfsplus_cat_folder *folder = &entry.folder; | |
503 | ||
504 | if (fd->entrylength < sizeof(struct hfsplus_cat_folder)) | |
505 | /* panic? */; | |
506 | hfs_bnode_read(fd->bnode, &entry, fd->entryoffset, | |
507 | sizeof(struct hfsplus_cat_folder)); | |
508 | hfsplus_get_perms(inode, &folder->permissions, 1); | |
509 | inode->i_nlink = 1; | |
510 | inode->i_size = 2 + be32_to_cpu(folder->valence); | |
511 | inode->i_atime = hfsp_mt2ut(folder->access_date); | |
512 | inode->i_mtime = hfsp_mt2ut(folder->content_mod_date); | |
9a4cad95 | 513 | inode->i_ctime = hfsp_mt2ut(folder->attribute_mod_date); |
6af502de CH |
514 | HFSPLUS_I(inode)->create_date = folder->create_date; |
515 | HFSPLUS_I(inode)->fs_blocks = 0; | |
1da177e4 LT |
516 | inode->i_op = &hfsplus_dir_inode_operations; |
517 | inode->i_fop = &hfsplus_dir_operations; | |
518 | } else if (type == HFSPLUS_FILE) { | |
519 | struct hfsplus_cat_file *file = &entry.file; | |
520 | ||
521 | if (fd->entrylength < sizeof(struct hfsplus_cat_file)) | |
522 | /* panic? */; | |
523 | hfs_bnode_read(fd->bnode, &entry, fd->entryoffset, | |
524 | sizeof(struct hfsplus_cat_file)); | |
525 | ||
526 | hfsplus_inode_read_fork(inode, HFSPLUS_IS_DATA(inode) ? | |
527 | &file->data_fork : &file->rsrc_fork); | |
528 | hfsplus_get_perms(inode, &file->permissions, 0); | |
529 | inode->i_nlink = 1; | |
530 | if (S_ISREG(inode->i_mode)) { | |
531 | if (file->permissions.dev) | |
532 | inode->i_nlink = be32_to_cpu(file->permissions.dev); | |
533 | inode->i_op = &hfsplus_file_inode_operations; | |
534 | inode->i_fop = &hfsplus_file_operations; | |
535 | inode->i_mapping->a_ops = &hfsplus_aops; | |
536 | } else if (S_ISLNK(inode->i_mode)) { | |
537 | inode->i_op = &page_symlink_inode_operations; | |
538 | inode->i_mapping->a_ops = &hfsplus_aops; | |
539 | } else { | |
540 | init_special_inode(inode, inode->i_mode, | |
541 | be32_to_cpu(file->permissions.dev)); | |
542 | } | |
543 | inode->i_atime = hfsp_mt2ut(file->access_date); | |
544 | inode->i_mtime = hfsp_mt2ut(file->content_mod_date); | |
9a4cad95 | 545 | inode->i_ctime = hfsp_mt2ut(file->attribute_mod_date); |
6af502de | 546 | HFSPLUS_I(inode)->create_date = file->create_date; |
1da177e4 | 547 | } else { |
634725a9 | 548 | printk(KERN_ERR "hfs: bad catalog entry used to create inode\n"); |
1da177e4 LT |
549 | res = -EIO; |
550 | } | |
551 | return res; | |
552 | } | |
553 | ||
554 | int hfsplus_cat_write_inode(struct inode *inode) | |
555 | { | |
556 | struct inode *main_inode = inode; | |
557 | struct hfs_find_data fd; | |
558 | hfsplus_cat_entry entry; | |
559 | ||
560 | if (HFSPLUS_IS_RSRC(inode)) | |
6af502de | 561 | main_inode = HFSPLUS_I(inode)->rsrc_inode; |
1da177e4 LT |
562 | |
563 | if (!main_inode->i_nlink) | |
564 | return 0; | |
565 | ||
dd73a01a | 566 | if (hfs_find_init(HFSPLUS_SB(main_inode->i_sb)->cat_tree, &fd)) |
1da177e4 LT |
567 | /* panic? */ |
568 | return -EIO; | |
569 | ||
570 | if (hfsplus_find_cat(main_inode->i_sb, main_inode->i_ino, &fd)) | |
571 | /* panic? */ | |
572 | goto out; | |
573 | ||
574 | if (S_ISDIR(main_inode->i_mode)) { | |
575 | struct hfsplus_cat_folder *folder = &entry.folder; | |
576 | ||
577 | if (fd.entrylength < sizeof(struct hfsplus_cat_folder)) | |
578 | /* panic? */; | |
579 | hfs_bnode_read(fd.bnode, &entry, fd.entryoffset, | |
580 | sizeof(struct hfsplus_cat_folder)); | |
581 | /* simple node checks? */ | |
582 | hfsplus_set_perms(inode, &folder->permissions); | |
583 | folder->access_date = hfsp_ut2mt(inode->i_atime); | |
584 | folder->content_mod_date = hfsp_ut2mt(inode->i_mtime); | |
585 | folder->attribute_mod_date = hfsp_ut2mt(inode->i_ctime); | |
586 | folder->valence = cpu_to_be32(inode->i_size - 2); | |
587 | hfs_bnode_write(fd.bnode, &entry, fd.entryoffset, | |
588 | sizeof(struct hfsplus_cat_folder)); | |
589 | } else if (HFSPLUS_IS_RSRC(inode)) { | |
590 | struct hfsplus_cat_file *file = &entry.file; | |
591 | hfs_bnode_read(fd.bnode, &entry, fd.entryoffset, | |
592 | sizeof(struct hfsplus_cat_file)); | |
593 | hfsplus_inode_write_fork(inode, &file->rsrc_fork); | |
594 | hfs_bnode_write(fd.bnode, &entry, fd.entryoffset, | |
595 | sizeof(struct hfsplus_cat_file)); | |
596 | } else { | |
597 | struct hfsplus_cat_file *file = &entry.file; | |
598 | ||
599 | if (fd.entrylength < sizeof(struct hfsplus_cat_file)) | |
600 | /* panic? */; | |
601 | hfs_bnode_read(fd.bnode, &entry, fd.entryoffset, | |
602 | sizeof(struct hfsplus_cat_file)); | |
603 | hfsplus_inode_write_fork(inode, &file->data_fork); | |
1da177e4 LT |
604 | hfsplus_set_perms(inode, &file->permissions); |
605 | if ((file->permissions.rootflags | file->permissions.userflags) & HFSPLUS_FLG_IMMUTABLE) | |
606 | file->flags |= cpu_to_be16(HFSPLUS_FILE_LOCKED); | |
607 | else | |
608 | file->flags &= cpu_to_be16(~HFSPLUS_FILE_LOCKED); | |
609 | file->access_date = hfsp_ut2mt(inode->i_atime); | |
610 | file->content_mod_date = hfsp_ut2mt(inode->i_mtime); | |
611 | file->attribute_mod_date = hfsp_ut2mt(inode->i_ctime); | |
612 | hfs_bnode_write(fd.bnode, &entry, fd.entryoffset, | |
613 | sizeof(struct hfsplus_cat_file)); | |
614 | } | |
615 | out: | |
616 | hfs_find_exit(&fd); | |
617 | return 0; | |
618 | } |