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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 | ||
34a2d313 | 11 | #include <linux/blkdev.h> |
1da177e4 LT |
12 | #include <linux/mm.h> |
13 | #include <linux/fs.h> | |
14 | #include <linux/pagemap.h> | |
1da177e4 | 15 | #include <linux/mpage.h> |
e8edc6e0 | 16 | #include <linux/sched.h> |
1da177e4 LT |
17 | |
18 | #include "hfsplus_fs.h" | |
19 | #include "hfsplus_raw.h" | |
20 | ||
21 | static int hfsplus_readpage(struct file *file, struct page *page) | |
22 | { | |
1da177e4 LT |
23 | return block_read_full_page(page, hfsplus_get_block); |
24 | } | |
25 | ||
26 | static int hfsplus_writepage(struct page *page, struct writeback_control *wbc) | |
27 | { | |
1da177e4 LT |
28 | return block_write_full_page(page, hfsplus_get_block, wbc); |
29 | } | |
30 | ||
7c0efc62 NP |
31 | static int hfsplus_write_begin(struct file *file, struct address_space *mapping, |
32 | loff_t pos, unsigned len, unsigned flags, | |
33 | struct page **pagep, void **fsdata) | |
1da177e4 | 34 | { |
282dc178 CH |
35 | int ret; |
36 | ||
7c0efc62 | 37 | *pagep = NULL; |
282dc178 | 38 | ret = cont_write_begin(file, mapping, pos, len, flags, pagep, fsdata, |
7c0efc62 | 39 | hfsplus_get_block, |
6af502de | 40 | &HFSPLUS_I(mapping->host)->phys_size); |
282dc178 CH |
41 | if (unlikely(ret)) { |
42 | loff_t isize = mapping->host->i_size; | |
43 | if (pos + len > isize) | |
44 | vmtruncate(mapping->host, isize); | |
45 | } | |
46 | ||
47 | return ret; | |
1da177e4 LT |
48 | } |
49 | ||
50 | static sector_t hfsplus_bmap(struct address_space *mapping, sector_t block) | |
51 | { | |
52 | return generic_block_bmap(mapping, block, hfsplus_get_block); | |
53 | } | |
54 | ||
27496a8c | 55 | static int hfsplus_releasepage(struct page *page, gfp_t mask) |
1da177e4 LT |
56 | { |
57 | struct inode *inode = page->mapping->host; | |
58 | struct super_block *sb = inode->i_sb; | |
59 | struct hfs_btree *tree; | |
60 | struct hfs_bnode *node; | |
61 | u32 nidx; | |
62 | int i, res = 1; | |
63 | ||
64 | switch (inode->i_ino) { | |
65 | case HFSPLUS_EXT_CNID: | |
dd73a01a | 66 | tree = HFSPLUS_SB(sb)->ext_tree; |
1da177e4 LT |
67 | break; |
68 | case HFSPLUS_CAT_CNID: | |
dd73a01a | 69 | tree = HFSPLUS_SB(sb)->cat_tree; |
1da177e4 LT |
70 | break; |
71 | case HFSPLUS_ATTR_CNID: | |
dd73a01a | 72 | tree = HFSPLUS_SB(sb)->attr_tree; |
1da177e4 LT |
73 | break; |
74 | default: | |
75 | BUG(); | |
76 | return 0; | |
77 | } | |
70632249 ES |
78 | if (!tree) |
79 | return 0; | |
1da177e4 | 80 | if (tree->node_size >= PAGE_CACHE_SIZE) { |
2753cc28 AS |
81 | nidx = page->index >> |
82 | (tree->node_size_shift - PAGE_CACHE_SHIFT); | |
1da177e4 LT |
83 | spin_lock(&tree->hash_lock); |
84 | node = hfs_bnode_findhash(tree, nidx); | |
85 | if (!node) | |
86 | ; | |
87 | else if (atomic_read(&node->refcnt)) | |
88 | res = 0; | |
89 | if (res && node) { | |
90 | hfs_bnode_unhash(node); | |
91 | hfs_bnode_free(node); | |
92 | } | |
93 | spin_unlock(&tree->hash_lock); | |
94 | } else { | |
2753cc28 AS |
95 | nidx = page->index << |
96 | (PAGE_CACHE_SHIFT - tree->node_size_shift); | |
1da177e4 LT |
97 | i = 1 << (PAGE_CACHE_SHIFT - tree->node_size_shift); |
98 | spin_lock(&tree->hash_lock); | |
99 | do { | |
100 | node = hfs_bnode_findhash(tree, nidx++); | |
101 | if (!node) | |
102 | continue; | |
103 | if (atomic_read(&node->refcnt)) { | |
104 | res = 0; | |
105 | break; | |
106 | } | |
107 | hfs_bnode_unhash(node); | |
108 | hfs_bnode_free(node); | |
109 | } while (--i && nidx < tree->node_count); | |
110 | spin_unlock(&tree->hash_lock); | |
111 | } | |
1da177e4 LT |
112 | return res ? try_to_free_buffers(page) : 0; |
113 | } | |
114 | ||
1da177e4 LT |
115 | static ssize_t hfsplus_direct_IO(int rw, struct kiocb *iocb, |
116 | const struct iovec *iov, loff_t offset, unsigned long nr_segs) | |
117 | { | |
118 | struct file *file = iocb->ki_filp; | |
f44ea031 | 119 | struct inode *inode = file->f_path.dentry->d_inode->i_mapping->host; |
eafdc7d1 | 120 | ssize_t ret; |
1da177e4 | 121 | |
aacfc19c CH |
122 | ret = blockdev_direct_IO(rw, iocb, inode, iov, offset, nr_segs, |
123 | hfsplus_get_block); | |
eafdc7d1 CH |
124 | |
125 | /* | |
126 | * In case of error extending write may have instantiated a few | |
127 | * blocks outside i_size. Trim these off again. | |
128 | */ | |
129 | if (unlikely((rw & WRITE) && ret < 0)) { | |
130 | loff_t isize = i_size_read(inode); | |
131 | loff_t end = offset + iov_length(iov, nr_segs); | |
132 | ||
133 | if (end > isize) | |
134 | vmtruncate(inode, isize); | |
135 | } | |
136 | ||
137 | return ret; | |
1da177e4 LT |
138 | } |
139 | ||
140 | static int hfsplus_writepages(struct address_space *mapping, | |
141 | struct writeback_control *wbc) | |
142 | { | |
143 | return mpage_writepages(mapping, wbc, hfsplus_get_block); | |
144 | } | |
145 | ||
f5e54d6e | 146 | const struct address_space_operations hfsplus_btree_aops = { |
1da177e4 LT |
147 | .readpage = hfsplus_readpage, |
148 | .writepage = hfsplus_writepage, | |
7c0efc62 NP |
149 | .write_begin = hfsplus_write_begin, |
150 | .write_end = generic_write_end, | |
1da177e4 LT |
151 | .bmap = hfsplus_bmap, |
152 | .releasepage = hfsplus_releasepage, | |
153 | }; | |
154 | ||
f5e54d6e | 155 | const struct address_space_operations hfsplus_aops = { |
1da177e4 LT |
156 | .readpage = hfsplus_readpage, |
157 | .writepage = hfsplus_writepage, | |
7c0efc62 NP |
158 | .write_begin = hfsplus_write_begin, |
159 | .write_end = generic_write_end, | |
1da177e4 LT |
160 | .bmap = hfsplus_bmap, |
161 | .direct_IO = hfsplus_direct_IO, | |
162 | .writepages = hfsplus_writepages, | |
163 | }; | |
164 | ||
e16404ed | 165 | const struct dentry_operations hfsplus_dentry_operations = { |
d45bce8f DG |
166 | .d_hash = hfsplus_hash_dentry, |
167 | .d_compare = hfsplus_compare_dentry, | |
168 | }; | |
169 | ||
2753cc28 AS |
170 | static struct dentry *hfsplus_file_lookup(struct inode *dir, |
171 | struct dentry *dentry, struct nameidata *nd) | |
1da177e4 LT |
172 | { |
173 | struct hfs_find_data fd; | |
174 | struct super_block *sb = dir->i_sb; | |
175 | struct inode *inode = NULL; | |
6af502de | 176 | struct hfsplus_inode_info *hip; |
1da177e4 LT |
177 | int err; |
178 | ||
179 | if (HFSPLUS_IS_RSRC(dir) || strcmp(dentry->d_name.name, "rsrc")) | |
180 | goto out; | |
181 | ||
6af502de | 182 | inode = HFSPLUS_I(dir)->rsrc_inode; |
1da177e4 LT |
183 | if (inode) |
184 | goto out; | |
185 | ||
186 | inode = new_inode(sb); | |
187 | if (!inode) | |
188 | return ERR_PTR(-ENOMEM); | |
189 | ||
6af502de | 190 | hip = HFSPLUS_I(inode); |
1da177e4 | 191 | inode->i_ino = dir->i_ino; |
6af502de CH |
192 | INIT_LIST_HEAD(&hip->open_dir_list); |
193 | mutex_init(&hip->extents_lock); | |
b33b7921 CH |
194 | hip->extent_state = 0; |
195 | hip->flags = 0; | |
f3922382 | 196 | hip->userflags = 0; |
b33b7921 | 197 | set_bit(HFSPLUS_I_RSRC, &hip->flags); |
1da177e4 | 198 | |
5bd9d99d AK |
199 | err = hfs_find_init(HFSPLUS_SB(sb)->cat_tree, &fd); |
200 | if (!err) { | |
201 | err = hfsplus_find_cat(sb, dir->i_ino, &fd); | |
202 | if (!err) | |
203 | err = hfsplus_cat_read_inode(inode, &fd); | |
204 | hfs_find_exit(&fd); | |
205 | } | |
1da177e4 LT |
206 | if (err) { |
207 | iput(inode); | |
208 | return ERR_PTR(err); | |
209 | } | |
6af502de CH |
210 | hip->rsrc_inode = dir; |
211 | HFSPLUS_I(dir)->rsrc_inode = inode; | |
1da177e4 | 212 | igrab(dir); |
58a818f5 CH |
213 | |
214 | /* | |
215 | * __mark_inode_dirty expects inodes to be hashed. Since we don't | |
216 | * want resource fork inodes in the regular inode space, we make them | |
217 | * appear hashed, but do not put on any lists. hlist_del() | |
218 | * will work fine and require no locking. | |
219 | */ | |
756acc2d | 220 | hlist_add_fake(&inode->i_hash); |
58a818f5 | 221 | |
1da177e4 | 222 | mark_inode_dirty(inode); |
1da177e4 LT |
223 | out: |
224 | d_add(dentry, inode); | |
225 | return NULL; | |
226 | } | |
227 | ||
2753cc28 AS |
228 | static void hfsplus_get_perms(struct inode *inode, |
229 | struct hfsplus_perm *perms, int dir) | |
1da177e4 | 230 | { |
dd73a01a | 231 | struct hfsplus_sb_info *sbi = HFSPLUS_SB(inode->i_sb); |
1da177e4 LT |
232 | u16 mode; |
233 | ||
234 | mode = be16_to_cpu(perms->mode); | |
235 | ||
236 | inode->i_uid = be32_to_cpu(perms->owner); | |
237 | if (!inode->i_uid && !mode) | |
dd73a01a | 238 | inode->i_uid = sbi->uid; |
1da177e4 LT |
239 | |
240 | inode->i_gid = be32_to_cpu(perms->group); | |
241 | if (!inode->i_gid && !mode) | |
dd73a01a | 242 | inode->i_gid = sbi->gid; |
1da177e4 LT |
243 | |
244 | if (dir) { | |
dd73a01a | 245 | mode = mode ? (mode & S_IALLUGO) : (S_IRWXUGO & ~(sbi->umask)); |
1da177e4 LT |
246 | mode |= S_IFDIR; |
247 | } else if (!mode) | |
dd73a01a | 248 | mode = S_IFREG | ((S_IRUGO|S_IWUGO) & ~(sbi->umask)); |
1da177e4 LT |
249 | inode->i_mode = mode; |
250 | ||
6af502de | 251 | HFSPLUS_I(inode)->userflags = perms->userflags; |
1da177e4 LT |
252 | if (perms->rootflags & HFSPLUS_FLG_IMMUTABLE) |
253 | inode->i_flags |= S_IMMUTABLE; | |
254 | else | |
255 | inode->i_flags &= ~S_IMMUTABLE; | |
256 | if (perms->rootflags & HFSPLUS_FLG_APPEND) | |
257 | inode->i_flags |= S_APPEND; | |
258 | else | |
259 | inode->i_flags &= ~S_APPEND; | |
260 | } | |
261 | ||
1da177e4 LT |
262 | static int hfsplus_file_open(struct inode *inode, struct file *file) |
263 | { | |
264 | if (HFSPLUS_IS_RSRC(inode)) | |
6af502de | 265 | inode = HFSPLUS_I(inode)->rsrc_inode; |
6e715294 AC |
266 | if (!(file->f_flags & O_LARGEFILE) && i_size_read(inode) > MAX_NON_LFS) |
267 | return -EOVERFLOW; | |
6af502de | 268 | atomic_inc(&HFSPLUS_I(inode)->opencnt); |
1da177e4 LT |
269 | return 0; |
270 | } | |
271 | ||
272 | static int hfsplus_file_release(struct inode *inode, struct file *file) | |
273 | { | |
274 | struct super_block *sb = inode->i_sb; | |
275 | ||
276 | if (HFSPLUS_IS_RSRC(inode)) | |
6af502de CH |
277 | inode = HFSPLUS_I(inode)->rsrc_inode; |
278 | if (atomic_dec_and_test(&HFSPLUS_I(inode)->opencnt)) { | |
1b1dcc1b | 279 | mutex_lock(&inode->i_mutex); |
1da177e4 LT |
280 | hfsplus_file_truncate(inode); |
281 | if (inode->i_flags & S_DEAD) { | |
dd73a01a CH |
282 | hfsplus_delete_cat(inode->i_ino, |
283 | HFSPLUS_SB(sb)->hidden_dir, NULL); | |
1da177e4 LT |
284 | hfsplus_delete_inode(inode); |
285 | } | |
1b1dcc1b | 286 | mutex_unlock(&inode->i_mutex); |
1da177e4 LT |
287 | } |
288 | return 0; | |
289 | } | |
290 | ||
d39aae9e CH |
291 | static int hfsplus_setattr(struct dentry *dentry, struct iattr *attr) |
292 | { | |
293 | struct inode *inode = dentry->d_inode; | |
294 | int error; | |
295 | ||
296 | error = inode_change_ok(inode, attr); | |
297 | if (error) | |
298 | return error; | |
1025774c CH |
299 | |
300 | if ((attr->ia_valid & ATTR_SIZE) && | |
301 | attr->ia_size != i_size_read(inode)) { | |
562c72aa CH |
302 | inode_dio_wait(inode); |
303 | ||
1025774c CH |
304 | error = vmtruncate(inode, attr->ia_size); |
305 | if (error) | |
306 | return error; | |
307 | } | |
308 | ||
309 | setattr_copy(inode, attr); | |
310 | mark_inode_dirty(inode); | |
311 | return 0; | |
d39aae9e CH |
312 | } |
313 | ||
02c24a82 JB |
314 | int hfsplus_file_fsync(struct file *file, loff_t start, loff_t end, |
315 | int datasync) | |
b5fc510c | 316 | { |
28146976 | 317 | struct inode *inode = file->f_mapping->host; |
e3494705 | 318 | struct hfsplus_inode_info *hip = HFSPLUS_I(inode); |
28146976 | 319 | struct hfsplus_sb_info *sbi = HFSPLUS_SB(inode->i_sb); |
e3494705 | 320 | int error = 0, error2; |
b5fc510c | 321 | |
02c24a82 JB |
322 | error = filemap_write_and_wait_range(inode->i_mapping, start, end); |
323 | if (error) | |
324 | return error; | |
325 | mutex_lock(&inode->i_mutex); | |
326 | ||
28146976 CH |
327 | /* |
328 | * Sync inode metadata into the catalog and extent trees. | |
329 | */ | |
330 | sync_inode_metadata(inode, 1); | |
331 | ||
332 | /* | |
333 | * And explicitly write out the btrees. | |
334 | */ | |
e3494705 CH |
335 | if (test_and_clear_bit(HFSPLUS_I_CAT_DIRTY, &hip->flags)) |
336 | error = filemap_write_and_wait(sbi->cat_tree->inode->i_mapping); | |
337 | ||
338 | if (test_and_clear_bit(HFSPLUS_I_EXT_DIRTY, &hip->flags)) { | |
2753cc28 AS |
339 | error2 = |
340 | filemap_write_and_wait(sbi->ext_tree->inode->i_mapping); | |
e3494705 CH |
341 | if (!error) |
342 | error = error2; | |
343 | } | |
344 | ||
345 | if (test_and_clear_bit(HFSPLUS_I_ALLOC_DIRTY, &hip->flags)) { | |
346 | error2 = filemap_write_and_wait(sbi->alloc_file->i_mapping); | |
347 | if (!error) | |
348 | error = error2; | |
349 | } | |
350 | ||
34a2d313 CH |
351 | if (!test_bit(HFSPLUS_SB_NOBARRIER, &sbi->flags)) |
352 | blkdev_issue_flush(inode->i_sb->s_bdev, GFP_KERNEL, NULL); | |
353 | ||
02c24a82 JB |
354 | mutex_unlock(&inode->i_mutex); |
355 | ||
28146976 | 356 | return error; |
b5fc510c AV |
357 | } |
358 | ||
92e1d5be | 359 | static const struct inode_operations hfsplus_file_inode_operations = { |
1da177e4 LT |
360 | .lookup = hfsplus_file_lookup, |
361 | .truncate = hfsplus_file_truncate, | |
d39aae9e | 362 | .setattr = hfsplus_setattr, |
1da177e4 LT |
363 | .setxattr = hfsplus_setxattr, |
364 | .getxattr = hfsplus_getxattr, | |
365 | .listxattr = hfsplus_listxattr, | |
366 | }; | |
367 | ||
4b6f5d20 | 368 | static const struct file_operations hfsplus_file_operations = { |
20b7643d | 369 | .llseek = generic_file_llseek, |
543ade1f BP |
370 | .read = do_sync_read, |
371 | .aio_read = generic_file_aio_read, | |
372 | .write = do_sync_write, | |
373 | .aio_write = generic_file_aio_write, | |
1da177e4 | 374 | .mmap = generic_file_mmap, |
5ffc4ef4 | 375 | .splice_read = generic_file_splice_read, |
b5fc510c | 376 | .fsync = hfsplus_file_fsync, |
1da177e4 LT |
377 | .open = hfsplus_file_open, |
378 | .release = hfsplus_file_release, | |
7cc4bcc6 | 379 | .unlocked_ioctl = hfsplus_ioctl, |
1da177e4 LT |
380 | }; |
381 | ||
c47da798 | 382 | struct inode *hfsplus_new_inode(struct super_block *sb, umode_t mode) |
1da177e4 | 383 | { |
dd73a01a | 384 | struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb); |
1da177e4 | 385 | struct inode *inode = new_inode(sb); |
6af502de | 386 | struct hfsplus_inode_info *hip; |
dd73a01a | 387 | |
1da177e4 LT |
388 | if (!inode) |
389 | return NULL; | |
390 | ||
dd73a01a | 391 | inode->i_ino = sbi->next_cnid++; |
1da177e4 | 392 | inode->i_mode = mode; |
4ac8489a DH |
393 | inode->i_uid = current_fsuid(); |
394 | inode->i_gid = current_fsgid(); | |
bfe86848 | 395 | set_nlink(inode, 1); |
1da177e4 | 396 | inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME_SEC; |
6af502de CH |
397 | |
398 | hip = HFSPLUS_I(inode); | |
399 | INIT_LIST_HEAD(&hip->open_dir_list); | |
400 | mutex_init(&hip->extents_lock); | |
401 | atomic_set(&hip->opencnt, 0); | |
b33b7921 | 402 | hip->extent_state = 0; |
6af502de | 403 | hip->flags = 0; |
f3922382 | 404 | hip->userflags = 0; |
6af502de CH |
405 | memset(hip->first_extents, 0, sizeof(hfsplus_extent_rec)); |
406 | memset(hip->cached_extents, 0, sizeof(hfsplus_extent_rec)); | |
407 | hip->alloc_blocks = 0; | |
408 | hip->first_blocks = 0; | |
409 | hip->cached_start = 0; | |
410 | hip->cached_blocks = 0; | |
411 | hip->phys_size = 0; | |
412 | hip->fs_blocks = 0; | |
413 | hip->rsrc_inode = NULL; | |
1da177e4 LT |
414 | if (S_ISDIR(inode->i_mode)) { |
415 | inode->i_size = 2; | |
dd73a01a | 416 | sbi->folder_count++; |
1da177e4 LT |
417 | inode->i_op = &hfsplus_dir_inode_operations; |
418 | inode->i_fop = &hfsplus_dir_operations; | |
419 | } else if (S_ISREG(inode->i_mode)) { | |
dd73a01a | 420 | sbi->file_count++; |
1da177e4 LT |
421 | inode->i_op = &hfsplus_file_inode_operations; |
422 | inode->i_fop = &hfsplus_file_operations; | |
423 | inode->i_mapping->a_ops = &hfsplus_aops; | |
6af502de | 424 | hip->clump_blocks = sbi->data_clump_blocks; |
1da177e4 | 425 | } else if (S_ISLNK(inode->i_mode)) { |
dd73a01a | 426 | sbi->file_count++; |
1da177e4 LT |
427 | inode->i_op = &page_symlink_inode_operations; |
428 | inode->i_mapping->a_ops = &hfsplus_aops; | |
6af502de | 429 | hip->clump_blocks = 1; |
1da177e4 | 430 | } else |
dd73a01a | 431 | sbi->file_count++; |
1da177e4 LT |
432 | insert_inode_hash(inode); |
433 | mark_inode_dirty(inode); | |
434 | sb->s_dirt = 1; | |
435 | ||
436 | return inode; | |
437 | } | |
438 | ||
439 | void hfsplus_delete_inode(struct inode *inode) | |
440 | { | |
441 | struct super_block *sb = inode->i_sb; | |
442 | ||
443 | if (S_ISDIR(inode->i_mode)) { | |
dd73a01a | 444 | HFSPLUS_SB(sb)->folder_count--; |
1da177e4 LT |
445 | sb->s_dirt = 1; |
446 | return; | |
447 | } | |
dd73a01a | 448 | HFSPLUS_SB(sb)->file_count--; |
1da177e4 LT |
449 | if (S_ISREG(inode->i_mode)) { |
450 | if (!inode->i_nlink) { | |
451 | inode->i_size = 0; | |
452 | hfsplus_file_truncate(inode); | |
453 | } | |
454 | } else if (S_ISLNK(inode->i_mode)) { | |
455 | inode->i_size = 0; | |
456 | hfsplus_file_truncate(inode); | |
457 | } | |
458 | sb->s_dirt = 1; | |
459 | } | |
460 | ||
461 | void hfsplus_inode_read_fork(struct inode *inode, struct hfsplus_fork_raw *fork) | |
462 | { | |
463 | struct super_block *sb = inode->i_sb; | |
dd73a01a | 464 | struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb); |
6af502de | 465 | struct hfsplus_inode_info *hip = HFSPLUS_I(inode); |
1da177e4 LT |
466 | u32 count; |
467 | int i; | |
468 | ||
6af502de | 469 | memcpy(&hip->first_extents, &fork->extents, sizeof(hfsplus_extent_rec)); |
1da177e4 LT |
470 | for (count = 0, i = 0; i < 8; i++) |
471 | count += be32_to_cpu(fork->extents[i].block_count); | |
6af502de CH |
472 | hip->first_blocks = count; |
473 | memset(hip->cached_extents, 0, sizeof(hfsplus_extent_rec)); | |
474 | hip->cached_start = 0; | |
475 | hip->cached_blocks = 0; | |
476 | ||
477 | hip->alloc_blocks = be32_to_cpu(fork->total_blocks); | |
478 | hip->phys_size = inode->i_size = be64_to_cpu(fork->total_size); | |
479 | hip->fs_blocks = | |
480 | (inode->i_size + sb->s_blocksize - 1) >> sb->s_blocksize_bits; | |
481 | inode_set_bytes(inode, hip->fs_blocks << sb->s_blocksize_bits); | |
482 | hip->clump_blocks = | |
dd73a01a | 483 | be32_to_cpu(fork->clump_size) >> sbi->alloc_blksz_shift; |
6af502de CH |
484 | if (!hip->clump_blocks) { |
485 | hip->clump_blocks = HFSPLUS_IS_RSRC(inode) ? | |
dd73a01a CH |
486 | sbi->rsrc_clump_blocks : |
487 | sbi->data_clump_blocks; | |
488 | } | |
1da177e4 LT |
489 | } |
490 | ||
2753cc28 AS |
491 | void hfsplus_inode_write_fork(struct inode *inode, |
492 | struct hfsplus_fork_raw *fork) | |
1da177e4 | 493 | { |
6af502de | 494 | memcpy(&fork->extents, &HFSPLUS_I(inode)->first_extents, |
1da177e4 LT |
495 | sizeof(hfsplus_extent_rec)); |
496 | fork->total_size = cpu_to_be64(inode->i_size); | |
6af502de | 497 | fork->total_blocks = cpu_to_be32(HFSPLUS_I(inode)->alloc_blocks); |
1da177e4 LT |
498 | } |
499 | ||
500 | int hfsplus_cat_read_inode(struct inode *inode, struct hfs_find_data *fd) | |
501 | { | |
502 | hfsplus_cat_entry entry; | |
503 | int res = 0; | |
504 | u16 type; | |
505 | ||
506 | type = hfs_bnode_read_u16(fd->bnode, fd->entryoffset); | |
507 | ||
f6089ff8 | 508 | HFSPLUS_I(inode)->linkid = 0; |
1da177e4 LT |
509 | if (type == HFSPLUS_FOLDER) { |
510 | struct hfsplus_cat_folder *folder = &entry.folder; | |
511 | ||
512 | if (fd->entrylength < sizeof(struct hfsplus_cat_folder)) | |
513 | /* panic? */; | |
514 | hfs_bnode_read(fd->bnode, &entry, fd->entryoffset, | |
515 | sizeof(struct hfsplus_cat_folder)); | |
516 | hfsplus_get_perms(inode, &folder->permissions, 1); | |
bfe86848 | 517 | set_nlink(inode, 1); |
1da177e4 LT |
518 | inode->i_size = 2 + be32_to_cpu(folder->valence); |
519 | inode->i_atime = hfsp_mt2ut(folder->access_date); | |
520 | inode->i_mtime = hfsp_mt2ut(folder->content_mod_date); | |
9a4cad95 | 521 | inode->i_ctime = hfsp_mt2ut(folder->attribute_mod_date); |
6af502de CH |
522 | HFSPLUS_I(inode)->create_date = folder->create_date; |
523 | HFSPLUS_I(inode)->fs_blocks = 0; | |
1da177e4 LT |
524 | inode->i_op = &hfsplus_dir_inode_operations; |
525 | inode->i_fop = &hfsplus_dir_operations; | |
526 | } else if (type == HFSPLUS_FILE) { | |
527 | struct hfsplus_cat_file *file = &entry.file; | |
528 | ||
529 | if (fd->entrylength < sizeof(struct hfsplus_cat_file)) | |
530 | /* panic? */; | |
531 | hfs_bnode_read(fd->bnode, &entry, fd->entryoffset, | |
532 | sizeof(struct hfsplus_cat_file)); | |
533 | ||
b33b7921 CH |
534 | hfsplus_inode_read_fork(inode, HFSPLUS_IS_RSRC(inode) ? |
535 | &file->rsrc_fork : &file->data_fork); | |
1da177e4 | 536 | hfsplus_get_perms(inode, &file->permissions, 0); |
bfe86848 | 537 | set_nlink(inode, 1); |
1da177e4 LT |
538 | if (S_ISREG(inode->i_mode)) { |
539 | if (file->permissions.dev) | |
bfe86848 MS |
540 | set_nlink(inode, |
541 | be32_to_cpu(file->permissions.dev)); | |
1da177e4 LT |
542 | inode->i_op = &hfsplus_file_inode_operations; |
543 | inode->i_fop = &hfsplus_file_operations; | |
544 | inode->i_mapping->a_ops = &hfsplus_aops; | |
545 | } else if (S_ISLNK(inode->i_mode)) { | |
546 | inode->i_op = &page_symlink_inode_operations; | |
547 | inode->i_mapping->a_ops = &hfsplus_aops; | |
548 | } else { | |
549 | init_special_inode(inode, inode->i_mode, | |
550 | be32_to_cpu(file->permissions.dev)); | |
551 | } | |
552 | inode->i_atime = hfsp_mt2ut(file->access_date); | |
553 | inode->i_mtime = hfsp_mt2ut(file->content_mod_date); | |
9a4cad95 | 554 | inode->i_ctime = hfsp_mt2ut(file->attribute_mod_date); |
6af502de | 555 | HFSPLUS_I(inode)->create_date = file->create_date; |
1da177e4 | 556 | } else { |
634725a9 | 557 | printk(KERN_ERR "hfs: bad catalog entry used to create inode\n"); |
1da177e4 LT |
558 | res = -EIO; |
559 | } | |
560 | return res; | |
561 | } | |
562 | ||
563 | int 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 | ||
569 | if (HFSPLUS_IS_RSRC(inode)) | |
6af502de | 570 | main_inode = HFSPLUS_I(inode)->rsrc_inode; |
1da177e4 LT |
571 | |
572 | if (!main_inode->i_nlink) | |
573 | return 0; | |
574 | ||
dd73a01a | 575 | if (hfs_find_init(HFSPLUS_SB(main_inode->i_sb)->cat_tree, &fd)) |
1da177e4 LT |
576 | /* panic? */ |
577 | return -EIO; | |
578 | ||
579 | if (hfsplus_find_cat(main_inode->i_sb, main_inode->i_ino, &fd)) | |
580 | /* panic? */ | |
581 | goto out; | |
582 | ||
583 | if (S_ISDIR(main_inode->i_mode)) { | |
584 | struct hfsplus_cat_folder *folder = &entry.folder; | |
585 | ||
586 | if (fd.entrylength < sizeof(struct hfsplus_cat_folder)) | |
587 | /* panic? */; | |
588 | hfs_bnode_read(fd.bnode, &entry, fd.entryoffset, | |
589 | sizeof(struct hfsplus_cat_folder)); | |
590 | /* simple node checks? */ | |
90e61690 | 591 | hfsplus_cat_set_perms(inode, &folder->permissions); |
1da177e4 LT |
592 | folder->access_date = hfsp_ut2mt(inode->i_atime); |
593 | folder->content_mod_date = hfsp_ut2mt(inode->i_mtime); | |
594 | folder->attribute_mod_date = hfsp_ut2mt(inode->i_ctime); | |
595 | folder->valence = cpu_to_be32(inode->i_size - 2); | |
596 | hfs_bnode_write(fd.bnode, &entry, fd.entryoffset, | |
597 | sizeof(struct hfsplus_cat_folder)); | |
598 | } else if (HFSPLUS_IS_RSRC(inode)) { | |
599 | struct hfsplus_cat_file *file = &entry.file; | |
600 | hfs_bnode_read(fd.bnode, &entry, fd.entryoffset, | |
601 | sizeof(struct hfsplus_cat_file)); | |
602 | hfsplus_inode_write_fork(inode, &file->rsrc_fork); | |
603 | hfs_bnode_write(fd.bnode, &entry, fd.entryoffset, | |
604 | sizeof(struct hfsplus_cat_file)); | |
605 | } else { | |
606 | struct hfsplus_cat_file *file = &entry.file; | |
607 | ||
608 | if (fd.entrylength < sizeof(struct hfsplus_cat_file)) | |
609 | /* panic? */; | |
610 | hfs_bnode_read(fd.bnode, &entry, fd.entryoffset, | |
611 | sizeof(struct hfsplus_cat_file)); | |
612 | hfsplus_inode_write_fork(inode, &file->data_fork); | |
90e61690 | 613 | hfsplus_cat_set_perms(inode, &file->permissions); |
2753cc28 AS |
614 | if (HFSPLUS_FLG_IMMUTABLE & |
615 | (file->permissions.rootflags | | |
616 | file->permissions.userflags)) | |
1da177e4 LT |
617 | file->flags |= cpu_to_be16(HFSPLUS_FILE_LOCKED); |
618 | else | |
619 | file->flags &= cpu_to_be16(~HFSPLUS_FILE_LOCKED); | |
620 | file->access_date = hfsp_ut2mt(inode->i_atime); | |
621 | file->content_mod_date = hfsp_ut2mt(inode->i_mtime); | |
622 | file->attribute_mod_date = hfsp_ut2mt(inode->i_ctime); | |
623 | hfs_bnode_write(fd.bnode, &entry, fd.entryoffset, | |
624 | sizeof(struct hfsplus_cat_file)); | |
625 | } | |
e3494705 CH |
626 | |
627 | set_bit(HFSPLUS_I_CAT_DIRTY, &HFSPLUS_I(inode)->flags); | |
1da177e4 LT |
628 | out: |
629 | hfs_find_exit(&fd); | |
630 | return 0; | |
631 | } |