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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> |
e2e40f2c | 17 | #include <linux/uio.h> |
1da177e4 LT |
18 | |
19 | #include "hfsplus_fs.h" | |
20 | #include "hfsplus_raw.h" | |
324ef39a | 21 | #include "xattr.h" |
b4c1107c | 22 | #include "acl.h" |
1da177e4 LT |
23 | |
24 | static int hfsplus_readpage(struct file *file, struct page *page) | |
25 | { | |
1da177e4 LT |
26 | return block_read_full_page(page, hfsplus_get_block); |
27 | } | |
28 | ||
29 | static int hfsplus_writepage(struct page *page, struct writeback_control *wbc) | |
30 | { | |
1da177e4 LT |
31 | return block_write_full_page(page, hfsplus_get_block, wbc); |
32 | } | |
33 | ||
d5068485 MS |
34 | static void hfsplus_write_failed(struct address_space *mapping, loff_t to) |
35 | { | |
36 | struct inode *inode = mapping->host; | |
37 | ||
38 | if (to > inode->i_size) { | |
7caef267 | 39 | truncate_pagecache(inode, inode->i_size); |
d5068485 MS |
40 | hfsplus_file_truncate(inode); |
41 | } | |
42 | } | |
43 | ||
7c0efc62 NP |
44 | static int hfsplus_write_begin(struct file *file, struct address_space *mapping, |
45 | loff_t pos, unsigned len, unsigned flags, | |
46 | struct page **pagep, void **fsdata) | |
1da177e4 | 47 | { |
282dc178 CH |
48 | int ret; |
49 | ||
7c0efc62 | 50 | *pagep = NULL; |
282dc178 | 51 | ret = cont_write_begin(file, mapping, pos, len, flags, pagep, fsdata, |
7c0efc62 | 52 | hfsplus_get_block, |
6af502de | 53 | &HFSPLUS_I(mapping->host)->phys_size); |
d5068485 MS |
54 | if (unlikely(ret)) |
55 | hfsplus_write_failed(mapping, pos + len); | |
282dc178 CH |
56 | |
57 | return ret; | |
1da177e4 LT |
58 | } |
59 | ||
60 | static sector_t hfsplus_bmap(struct address_space *mapping, sector_t block) | |
61 | { | |
62 | return generic_block_bmap(mapping, block, hfsplus_get_block); | |
63 | } | |
64 | ||
27496a8c | 65 | static int hfsplus_releasepage(struct page *page, gfp_t mask) |
1da177e4 LT |
66 | { |
67 | struct inode *inode = page->mapping->host; | |
68 | struct super_block *sb = inode->i_sb; | |
69 | struct hfs_btree *tree; | |
70 | struct hfs_bnode *node; | |
71 | u32 nidx; | |
72 | int i, res = 1; | |
73 | ||
74 | switch (inode->i_ino) { | |
75 | case HFSPLUS_EXT_CNID: | |
dd73a01a | 76 | tree = HFSPLUS_SB(sb)->ext_tree; |
1da177e4 LT |
77 | break; |
78 | case HFSPLUS_CAT_CNID: | |
dd73a01a | 79 | tree = HFSPLUS_SB(sb)->cat_tree; |
1da177e4 LT |
80 | break; |
81 | case HFSPLUS_ATTR_CNID: | |
dd73a01a | 82 | tree = HFSPLUS_SB(sb)->attr_tree; |
1da177e4 LT |
83 | break; |
84 | default: | |
85 | BUG(); | |
86 | return 0; | |
87 | } | |
70632249 ES |
88 | if (!tree) |
89 | return 0; | |
1da177e4 | 90 | if (tree->node_size >= PAGE_CACHE_SIZE) { |
2753cc28 AS |
91 | nidx = page->index >> |
92 | (tree->node_size_shift - PAGE_CACHE_SHIFT); | |
1da177e4 LT |
93 | spin_lock(&tree->hash_lock); |
94 | node = hfs_bnode_findhash(tree, nidx); | |
95 | if (!node) | |
96 | ; | |
97 | else if (atomic_read(&node->refcnt)) | |
98 | res = 0; | |
99 | if (res && node) { | |
100 | hfs_bnode_unhash(node); | |
101 | hfs_bnode_free(node); | |
102 | } | |
103 | spin_unlock(&tree->hash_lock); | |
104 | } else { | |
2753cc28 AS |
105 | nidx = page->index << |
106 | (PAGE_CACHE_SHIFT - tree->node_size_shift); | |
1da177e4 LT |
107 | i = 1 << (PAGE_CACHE_SHIFT - tree->node_size_shift); |
108 | spin_lock(&tree->hash_lock); | |
109 | do { | |
110 | node = hfs_bnode_findhash(tree, nidx++); | |
111 | if (!node) | |
112 | continue; | |
113 | if (atomic_read(&node->refcnt)) { | |
114 | res = 0; | |
115 | break; | |
116 | } | |
117 | hfs_bnode_unhash(node); | |
118 | hfs_bnode_free(node); | |
119 | } while (--i && nidx < tree->node_count); | |
120 | spin_unlock(&tree->hash_lock); | |
121 | } | |
1da177e4 LT |
122 | return res ? try_to_free_buffers(page) : 0; |
123 | } | |
124 | ||
1da177e4 | 125 | static ssize_t hfsplus_direct_IO(int rw, struct kiocb *iocb, |
d8d3d94b | 126 | struct iov_iter *iter, loff_t offset) |
1da177e4 LT |
127 | { |
128 | struct file *file = iocb->ki_filp; | |
d5068485 | 129 | struct address_space *mapping = file->f_mapping; |
496ad9aa | 130 | struct inode *inode = file_inode(file)->i_mapping->host; |
a6cbcd4a | 131 | size_t count = iov_iter_count(iter); |
eafdc7d1 | 132 | ssize_t ret; |
1da177e4 | 133 | |
17f8c842 | 134 | ret = blockdev_direct_IO(iocb, inode, iter, offset, hfsplus_get_block); |
eafdc7d1 CH |
135 | |
136 | /* | |
137 | * In case of error extending write may have instantiated a few | |
138 | * blocks outside i_size. Trim these off again. | |
139 | */ | |
140 | if (unlikely((rw & WRITE) && ret < 0)) { | |
141 | loff_t isize = i_size_read(inode); | |
a6cbcd4a | 142 | loff_t end = offset + count; |
eafdc7d1 CH |
143 | |
144 | if (end > isize) | |
d5068485 | 145 | hfsplus_write_failed(mapping, end); |
eafdc7d1 CH |
146 | } |
147 | ||
148 | return ret; | |
1da177e4 LT |
149 | } |
150 | ||
151 | static int hfsplus_writepages(struct address_space *mapping, | |
152 | struct writeback_control *wbc) | |
153 | { | |
154 | return mpage_writepages(mapping, wbc, hfsplus_get_block); | |
155 | } | |
156 | ||
f5e54d6e | 157 | const struct address_space_operations hfsplus_btree_aops = { |
1da177e4 LT |
158 | .readpage = hfsplus_readpage, |
159 | .writepage = hfsplus_writepage, | |
7c0efc62 NP |
160 | .write_begin = hfsplus_write_begin, |
161 | .write_end = generic_write_end, | |
1da177e4 LT |
162 | .bmap = hfsplus_bmap, |
163 | .releasepage = hfsplus_releasepage, | |
164 | }; | |
165 | ||
f5e54d6e | 166 | const struct address_space_operations hfsplus_aops = { |
1da177e4 LT |
167 | .readpage = hfsplus_readpage, |
168 | .writepage = hfsplus_writepage, | |
7c0efc62 NP |
169 | .write_begin = hfsplus_write_begin, |
170 | .write_end = generic_write_end, | |
1da177e4 LT |
171 | .bmap = hfsplus_bmap, |
172 | .direct_IO = hfsplus_direct_IO, | |
173 | .writepages = hfsplus_writepages, | |
174 | }; | |
175 | ||
e16404ed | 176 | const struct dentry_operations hfsplus_dentry_operations = { |
d45bce8f DG |
177 | .d_hash = hfsplus_hash_dentry, |
178 | .d_compare = hfsplus_compare_dentry, | |
179 | }; | |
180 | ||
2753cc28 AS |
181 | static void hfsplus_get_perms(struct inode *inode, |
182 | struct hfsplus_perm *perms, int dir) | |
1da177e4 | 183 | { |
dd73a01a | 184 | struct hfsplus_sb_info *sbi = HFSPLUS_SB(inode->i_sb); |
1da177e4 LT |
185 | u16 mode; |
186 | ||
187 | mode = be16_to_cpu(perms->mode); | |
188 | ||
16525e3f EB |
189 | i_uid_write(inode, be32_to_cpu(perms->owner)); |
190 | if (!i_uid_read(inode) && !mode) | |
dd73a01a | 191 | inode->i_uid = sbi->uid; |
1da177e4 | 192 | |
16525e3f EB |
193 | i_gid_write(inode, be32_to_cpu(perms->group)); |
194 | if (!i_gid_read(inode) && !mode) | |
dd73a01a | 195 | inode->i_gid = sbi->gid; |
1da177e4 LT |
196 | |
197 | if (dir) { | |
dd73a01a | 198 | mode = mode ? (mode & S_IALLUGO) : (S_IRWXUGO & ~(sbi->umask)); |
1da177e4 LT |
199 | mode |= S_IFDIR; |
200 | } else if (!mode) | |
dd73a01a | 201 | mode = S_IFREG | ((S_IRUGO|S_IWUGO) & ~(sbi->umask)); |
1da177e4 LT |
202 | inode->i_mode = mode; |
203 | ||
6af502de | 204 | HFSPLUS_I(inode)->userflags = perms->userflags; |
1da177e4 LT |
205 | if (perms->rootflags & HFSPLUS_FLG_IMMUTABLE) |
206 | inode->i_flags |= S_IMMUTABLE; | |
207 | else | |
208 | inode->i_flags &= ~S_IMMUTABLE; | |
209 | if (perms->rootflags & HFSPLUS_FLG_APPEND) | |
210 | inode->i_flags |= S_APPEND; | |
211 | else | |
212 | inode->i_flags &= ~S_APPEND; | |
213 | } | |
214 | ||
1da177e4 LT |
215 | static int hfsplus_file_open(struct inode *inode, struct file *file) |
216 | { | |
217 | if (HFSPLUS_IS_RSRC(inode)) | |
6af502de | 218 | inode = HFSPLUS_I(inode)->rsrc_inode; |
6e715294 AC |
219 | if (!(file->f_flags & O_LARGEFILE) && i_size_read(inode) > MAX_NON_LFS) |
220 | return -EOVERFLOW; | |
6af502de | 221 | atomic_inc(&HFSPLUS_I(inode)->opencnt); |
1da177e4 LT |
222 | return 0; |
223 | } | |
224 | ||
225 | static int hfsplus_file_release(struct inode *inode, struct file *file) | |
226 | { | |
227 | struct super_block *sb = inode->i_sb; | |
228 | ||
229 | if (HFSPLUS_IS_RSRC(inode)) | |
6af502de CH |
230 | inode = HFSPLUS_I(inode)->rsrc_inode; |
231 | if (atomic_dec_and_test(&HFSPLUS_I(inode)->opencnt)) { | |
1b1dcc1b | 232 | mutex_lock(&inode->i_mutex); |
1da177e4 LT |
233 | hfsplus_file_truncate(inode); |
234 | if (inode->i_flags & S_DEAD) { | |
dd73a01a CH |
235 | hfsplus_delete_cat(inode->i_ino, |
236 | HFSPLUS_SB(sb)->hidden_dir, NULL); | |
1da177e4 LT |
237 | hfsplus_delete_inode(inode); |
238 | } | |
1b1dcc1b | 239 | mutex_unlock(&inode->i_mutex); |
1da177e4 LT |
240 | } |
241 | return 0; | |
242 | } | |
243 | ||
d39aae9e CH |
244 | static int hfsplus_setattr(struct dentry *dentry, struct iattr *attr) |
245 | { | |
246 | struct inode *inode = dentry->d_inode; | |
247 | int error; | |
248 | ||
249 | error = inode_change_ok(inode, attr); | |
250 | if (error) | |
251 | return error; | |
1025774c CH |
252 | |
253 | if ((attr->ia_valid & ATTR_SIZE) && | |
254 | attr->ia_size != i_size_read(inode)) { | |
562c72aa | 255 | inode_dio_wait(inode); |
d5068485 MS |
256 | truncate_setsize(inode, attr->ia_size); |
257 | hfsplus_file_truncate(inode); | |
1025774c CH |
258 | } |
259 | ||
260 | setattr_copy(inode, attr); | |
261 | mark_inode_dirty(inode); | |
b4c1107c VD |
262 | |
263 | if (attr->ia_valid & ATTR_MODE) { | |
b0a7ab57 | 264 | error = posix_acl_chmod(inode, inode->i_mode); |
b4c1107c VD |
265 | if (unlikely(error)) |
266 | return error; | |
267 | } | |
268 | ||
1025774c | 269 | return 0; |
d39aae9e CH |
270 | } |
271 | ||
02c24a82 JB |
272 | int hfsplus_file_fsync(struct file *file, loff_t start, loff_t end, |
273 | int datasync) | |
b5fc510c | 274 | { |
28146976 | 275 | struct inode *inode = file->f_mapping->host; |
e3494705 | 276 | struct hfsplus_inode_info *hip = HFSPLUS_I(inode); |
28146976 | 277 | struct hfsplus_sb_info *sbi = HFSPLUS_SB(inode->i_sb); |
e3494705 | 278 | int error = 0, error2; |
b5fc510c | 279 | |
02c24a82 JB |
280 | error = filemap_write_and_wait_range(inode->i_mapping, start, end); |
281 | if (error) | |
282 | return error; | |
283 | mutex_lock(&inode->i_mutex); | |
284 | ||
28146976 CH |
285 | /* |
286 | * Sync inode metadata into the catalog and extent trees. | |
287 | */ | |
288 | sync_inode_metadata(inode, 1); | |
289 | ||
290 | /* | |
291 | * And explicitly write out the btrees. | |
292 | */ | |
e3494705 CH |
293 | if (test_and_clear_bit(HFSPLUS_I_CAT_DIRTY, &hip->flags)) |
294 | error = filemap_write_and_wait(sbi->cat_tree->inode->i_mapping); | |
295 | ||
296 | if (test_and_clear_bit(HFSPLUS_I_EXT_DIRTY, &hip->flags)) { | |
2753cc28 AS |
297 | error2 = |
298 | filemap_write_and_wait(sbi->ext_tree->inode->i_mapping); | |
e3494705 CH |
299 | if (!error) |
300 | error = error2; | |
301 | } | |
302 | ||
324ef39a VD |
303 | if (test_and_clear_bit(HFSPLUS_I_ATTR_DIRTY, &hip->flags)) { |
304 | if (sbi->attr_tree) { | |
305 | error2 = | |
306 | filemap_write_and_wait( | |
307 | sbi->attr_tree->inode->i_mapping); | |
308 | if (!error) | |
309 | error = error2; | |
310 | } else { | |
d6142673 | 311 | pr_err("sync non-existent attributes tree\n"); |
324ef39a VD |
312 | } |
313 | } | |
314 | ||
e3494705 CH |
315 | if (test_and_clear_bit(HFSPLUS_I_ALLOC_DIRTY, &hip->flags)) { |
316 | error2 = filemap_write_and_wait(sbi->alloc_file->i_mapping); | |
317 | if (!error) | |
318 | error = error2; | |
319 | } | |
320 | ||
34a2d313 CH |
321 | if (!test_bit(HFSPLUS_SB_NOBARRIER, &sbi->flags)) |
322 | blkdev_issue_flush(inode->i_sb->s_bdev, GFP_KERNEL, NULL); | |
323 | ||
02c24a82 JB |
324 | mutex_unlock(&inode->i_mutex); |
325 | ||
28146976 | 326 | return error; |
b5fc510c AV |
327 | } |
328 | ||
92e1d5be | 329 | static const struct inode_operations hfsplus_file_inode_operations = { |
d39aae9e | 330 | .setattr = hfsplus_setattr, |
324ef39a VD |
331 | .setxattr = generic_setxattr, |
332 | .getxattr = generic_getxattr, | |
1da177e4 | 333 | .listxattr = hfsplus_listxattr, |
b168fff7 | 334 | .removexattr = generic_removexattr, |
b4c1107c VD |
335 | #ifdef CONFIG_HFSPLUS_FS_POSIX_ACL |
336 | .get_acl = hfsplus_get_posix_acl, | |
b0a7ab57 | 337 | .set_acl = hfsplus_set_posix_acl, |
b4c1107c | 338 | #endif |
1da177e4 LT |
339 | }; |
340 | ||
4b6f5d20 | 341 | static const struct file_operations hfsplus_file_operations = { |
20b7643d | 342 | .llseek = generic_file_llseek, |
aad4f8bb | 343 | .read_iter = generic_file_read_iter, |
8174202b | 344 | .write_iter = generic_file_write_iter, |
1da177e4 | 345 | .mmap = generic_file_mmap, |
5ffc4ef4 | 346 | .splice_read = generic_file_splice_read, |
b5fc510c | 347 | .fsync = hfsplus_file_fsync, |
1da177e4 LT |
348 | .open = hfsplus_file_open, |
349 | .release = hfsplus_file_release, | |
7cc4bcc6 | 350 | .unlocked_ioctl = hfsplus_ioctl, |
1da177e4 LT |
351 | }; |
352 | ||
c47da798 | 353 | struct inode *hfsplus_new_inode(struct super_block *sb, umode_t mode) |
1da177e4 | 354 | { |
dd73a01a | 355 | struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb); |
1da177e4 | 356 | struct inode *inode = new_inode(sb); |
6af502de | 357 | struct hfsplus_inode_info *hip; |
dd73a01a | 358 | |
1da177e4 LT |
359 | if (!inode) |
360 | return NULL; | |
361 | ||
dd73a01a | 362 | inode->i_ino = sbi->next_cnid++; |
1da177e4 | 363 | inode->i_mode = mode; |
4ac8489a DH |
364 | inode->i_uid = current_fsuid(); |
365 | inode->i_gid = current_fsgid(); | |
bfe86848 | 366 | set_nlink(inode, 1); |
1da177e4 | 367 | inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME_SEC; |
6af502de CH |
368 | |
369 | hip = HFSPLUS_I(inode); | |
370 | INIT_LIST_HEAD(&hip->open_dir_list); | |
371 | mutex_init(&hip->extents_lock); | |
372 | atomic_set(&hip->opencnt, 0); | |
b33b7921 | 373 | hip->extent_state = 0; |
6af502de | 374 | hip->flags = 0; |
f3922382 | 375 | hip->userflags = 0; |
d7d673a5 | 376 | hip->subfolders = 0; |
6af502de CH |
377 | memset(hip->first_extents, 0, sizeof(hfsplus_extent_rec)); |
378 | memset(hip->cached_extents, 0, sizeof(hfsplus_extent_rec)); | |
379 | hip->alloc_blocks = 0; | |
380 | hip->first_blocks = 0; | |
381 | hip->cached_start = 0; | |
382 | hip->cached_blocks = 0; | |
383 | hip->phys_size = 0; | |
384 | hip->fs_blocks = 0; | |
385 | hip->rsrc_inode = NULL; | |
1da177e4 LT |
386 | if (S_ISDIR(inode->i_mode)) { |
387 | inode->i_size = 2; | |
dd73a01a | 388 | sbi->folder_count++; |
1da177e4 LT |
389 | inode->i_op = &hfsplus_dir_inode_operations; |
390 | inode->i_fop = &hfsplus_dir_operations; | |
391 | } else if (S_ISREG(inode->i_mode)) { | |
dd73a01a | 392 | sbi->file_count++; |
1da177e4 LT |
393 | inode->i_op = &hfsplus_file_inode_operations; |
394 | inode->i_fop = &hfsplus_file_operations; | |
395 | inode->i_mapping->a_ops = &hfsplus_aops; | |
6af502de | 396 | hip->clump_blocks = sbi->data_clump_blocks; |
1da177e4 | 397 | } else if (S_ISLNK(inode->i_mode)) { |
dd73a01a | 398 | sbi->file_count++; |
1da177e4 LT |
399 | inode->i_op = &page_symlink_inode_operations; |
400 | inode->i_mapping->a_ops = &hfsplus_aops; | |
6af502de | 401 | hip->clump_blocks = 1; |
1da177e4 | 402 | } else |
dd73a01a | 403 | sbi->file_count++; |
1da177e4 LT |
404 | insert_inode_hash(inode); |
405 | mark_inode_dirty(inode); | |
9e6c5829 | 406 | hfsplus_mark_mdb_dirty(sb); |
1da177e4 LT |
407 | |
408 | return inode; | |
409 | } | |
410 | ||
411 | void hfsplus_delete_inode(struct inode *inode) | |
412 | { | |
413 | struct super_block *sb = inode->i_sb; | |
414 | ||
415 | if (S_ISDIR(inode->i_mode)) { | |
dd73a01a | 416 | HFSPLUS_SB(sb)->folder_count--; |
9e6c5829 | 417 | hfsplus_mark_mdb_dirty(sb); |
1da177e4 LT |
418 | return; |
419 | } | |
dd73a01a | 420 | HFSPLUS_SB(sb)->file_count--; |
1da177e4 LT |
421 | if (S_ISREG(inode->i_mode)) { |
422 | if (!inode->i_nlink) { | |
423 | inode->i_size = 0; | |
424 | hfsplus_file_truncate(inode); | |
425 | } | |
426 | } else if (S_ISLNK(inode->i_mode)) { | |
427 | inode->i_size = 0; | |
428 | hfsplus_file_truncate(inode); | |
429 | } | |
9e6c5829 | 430 | hfsplus_mark_mdb_dirty(sb); |
1da177e4 LT |
431 | } |
432 | ||
433 | void hfsplus_inode_read_fork(struct inode *inode, struct hfsplus_fork_raw *fork) | |
434 | { | |
435 | struct super_block *sb = inode->i_sb; | |
dd73a01a | 436 | struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb); |
6af502de | 437 | struct hfsplus_inode_info *hip = HFSPLUS_I(inode); |
1da177e4 LT |
438 | u32 count; |
439 | int i; | |
440 | ||
6af502de | 441 | memcpy(&hip->first_extents, &fork->extents, sizeof(hfsplus_extent_rec)); |
1da177e4 LT |
442 | for (count = 0, i = 0; i < 8; i++) |
443 | count += be32_to_cpu(fork->extents[i].block_count); | |
6af502de CH |
444 | hip->first_blocks = count; |
445 | memset(hip->cached_extents, 0, sizeof(hfsplus_extent_rec)); | |
446 | hip->cached_start = 0; | |
447 | hip->cached_blocks = 0; | |
448 | ||
449 | hip->alloc_blocks = be32_to_cpu(fork->total_blocks); | |
450 | hip->phys_size = inode->i_size = be64_to_cpu(fork->total_size); | |
451 | hip->fs_blocks = | |
452 | (inode->i_size + sb->s_blocksize - 1) >> sb->s_blocksize_bits; | |
453 | inode_set_bytes(inode, hip->fs_blocks << sb->s_blocksize_bits); | |
454 | hip->clump_blocks = | |
dd73a01a | 455 | be32_to_cpu(fork->clump_size) >> sbi->alloc_blksz_shift; |
6af502de CH |
456 | if (!hip->clump_blocks) { |
457 | hip->clump_blocks = HFSPLUS_IS_RSRC(inode) ? | |
dd73a01a CH |
458 | sbi->rsrc_clump_blocks : |
459 | sbi->data_clump_blocks; | |
460 | } | |
1da177e4 LT |
461 | } |
462 | ||
2753cc28 AS |
463 | void hfsplus_inode_write_fork(struct inode *inode, |
464 | struct hfsplus_fork_raw *fork) | |
1da177e4 | 465 | { |
6af502de | 466 | memcpy(&fork->extents, &HFSPLUS_I(inode)->first_extents, |
1da177e4 LT |
467 | sizeof(hfsplus_extent_rec)); |
468 | fork->total_size = cpu_to_be64(inode->i_size); | |
6af502de | 469 | fork->total_blocks = cpu_to_be32(HFSPLUS_I(inode)->alloc_blocks); |
1da177e4 LT |
470 | } |
471 | ||
472 | int hfsplus_cat_read_inode(struct inode *inode, struct hfs_find_data *fd) | |
473 | { | |
474 | hfsplus_cat_entry entry; | |
475 | int res = 0; | |
476 | u16 type; | |
477 | ||
478 | type = hfs_bnode_read_u16(fd->bnode, fd->entryoffset); | |
479 | ||
f6089ff8 | 480 | HFSPLUS_I(inode)->linkid = 0; |
1da177e4 LT |
481 | if (type == HFSPLUS_FOLDER) { |
482 | struct hfsplus_cat_folder *folder = &entry.folder; | |
483 | ||
484 | if (fd->entrylength < sizeof(struct hfsplus_cat_folder)) | |
485 | /* panic? */; | |
486 | hfs_bnode_read(fd->bnode, &entry, fd->entryoffset, | |
487 | sizeof(struct hfsplus_cat_folder)); | |
488 | hfsplus_get_perms(inode, &folder->permissions, 1); | |
bfe86848 | 489 | set_nlink(inode, 1); |
1da177e4 LT |
490 | inode->i_size = 2 + be32_to_cpu(folder->valence); |
491 | inode->i_atime = hfsp_mt2ut(folder->access_date); | |
492 | inode->i_mtime = hfsp_mt2ut(folder->content_mod_date); | |
9a4cad95 | 493 | inode->i_ctime = hfsp_mt2ut(folder->attribute_mod_date); |
6af502de CH |
494 | HFSPLUS_I(inode)->create_date = folder->create_date; |
495 | HFSPLUS_I(inode)->fs_blocks = 0; | |
d7d673a5 SA |
496 | if (folder->flags & cpu_to_be16(HFSPLUS_HAS_FOLDER_COUNT)) { |
497 | HFSPLUS_I(inode)->subfolders = | |
498 | be32_to_cpu(folder->subfolders); | |
499 | } | |
1da177e4 LT |
500 | inode->i_op = &hfsplus_dir_inode_operations; |
501 | inode->i_fop = &hfsplus_dir_operations; | |
502 | } else if (type == HFSPLUS_FILE) { | |
503 | struct hfsplus_cat_file *file = &entry.file; | |
504 | ||
505 | if (fd->entrylength < sizeof(struct hfsplus_cat_file)) | |
506 | /* panic? */; | |
507 | hfs_bnode_read(fd->bnode, &entry, fd->entryoffset, | |
508 | sizeof(struct hfsplus_cat_file)); | |
509 | ||
b33b7921 CH |
510 | hfsplus_inode_read_fork(inode, HFSPLUS_IS_RSRC(inode) ? |
511 | &file->rsrc_fork : &file->data_fork); | |
1da177e4 | 512 | hfsplus_get_perms(inode, &file->permissions, 0); |
bfe86848 | 513 | set_nlink(inode, 1); |
1da177e4 LT |
514 | if (S_ISREG(inode->i_mode)) { |
515 | if (file->permissions.dev) | |
bfe86848 MS |
516 | set_nlink(inode, |
517 | be32_to_cpu(file->permissions.dev)); | |
1da177e4 LT |
518 | inode->i_op = &hfsplus_file_inode_operations; |
519 | inode->i_fop = &hfsplus_file_operations; | |
520 | inode->i_mapping->a_ops = &hfsplus_aops; | |
521 | } else if (S_ISLNK(inode->i_mode)) { | |
522 | inode->i_op = &page_symlink_inode_operations; | |
523 | inode->i_mapping->a_ops = &hfsplus_aops; | |
524 | } else { | |
525 | init_special_inode(inode, inode->i_mode, | |
526 | be32_to_cpu(file->permissions.dev)); | |
527 | } | |
528 | inode->i_atime = hfsp_mt2ut(file->access_date); | |
529 | inode->i_mtime = hfsp_mt2ut(file->content_mod_date); | |
9a4cad95 | 530 | inode->i_ctime = hfsp_mt2ut(file->attribute_mod_date); |
6af502de | 531 | HFSPLUS_I(inode)->create_date = file->create_date; |
1da177e4 | 532 | } else { |
d6142673 | 533 | pr_err("bad catalog entry used to create inode\n"); |
1da177e4 LT |
534 | res = -EIO; |
535 | } | |
536 | return res; | |
537 | } | |
538 | ||
539 | int hfsplus_cat_write_inode(struct inode *inode) | |
540 | { | |
541 | struct inode *main_inode = inode; | |
542 | struct hfs_find_data fd; | |
543 | hfsplus_cat_entry entry; | |
544 | ||
545 | if (HFSPLUS_IS_RSRC(inode)) | |
6af502de | 546 | main_inode = HFSPLUS_I(inode)->rsrc_inode; |
1da177e4 LT |
547 | |
548 | if (!main_inode->i_nlink) | |
549 | return 0; | |
550 | ||
dd73a01a | 551 | if (hfs_find_init(HFSPLUS_SB(main_inode->i_sb)->cat_tree, &fd)) |
1da177e4 LT |
552 | /* panic? */ |
553 | return -EIO; | |
554 | ||
555 | if (hfsplus_find_cat(main_inode->i_sb, main_inode->i_ino, &fd)) | |
556 | /* panic? */ | |
557 | goto out; | |
558 | ||
559 | if (S_ISDIR(main_inode->i_mode)) { | |
560 | struct hfsplus_cat_folder *folder = &entry.folder; | |
561 | ||
562 | if (fd.entrylength < sizeof(struct hfsplus_cat_folder)) | |
563 | /* panic? */; | |
564 | hfs_bnode_read(fd.bnode, &entry, fd.entryoffset, | |
565 | sizeof(struct hfsplus_cat_folder)); | |
566 | /* simple node checks? */ | |
90e61690 | 567 | hfsplus_cat_set_perms(inode, &folder->permissions); |
1da177e4 LT |
568 | folder->access_date = hfsp_ut2mt(inode->i_atime); |
569 | folder->content_mod_date = hfsp_ut2mt(inode->i_mtime); | |
570 | folder->attribute_mod_date = hfsp_ut2mt(inode->i_ctime); | |
571 | folder->valence = cpu_to_be32(inode->i_size - 2); | |
d7d673a5 SA |
572 | if (folder->flags & cpu_to_be16(HFSPLUS_HAS_FOLDER_COUNT)) { |
573 | folder->subfolders = | |
574 | cpu_to_be32(HFSPLUS_I(inode)->subfolders); | |
575 | } | |
1da177e4 LT |
576 | hfs_bnode_write(fd.bnode, &entry, fd.entryoffset, |
577 | sizeof(struct hfsplus_cat_folder)); | |
578 | } else if (HFSPLUS_IS_RSRC(inode)) { | |
579 | struct hfsplus_cat_file *file = &entry.file; | |
580 | hfs_bnode_read(fd.bnode, &entry, fd.entryoffset, | |
581 | sizeof(struct hfsplus_cat_file)); | |
582 | hfsplus_inode_write_fork(inode, &file->rsrc_fork); | |
583 | hfs_bnode_write(fd.bnode, &entry, fd.entryoffset, | |
584 | sizeof(struct hfsplus_cat_file)); | |
585 | } else { | |
586 | struct hfsplus_cat_file *file = &entry.file; | |
587 | ||
588 | if (fd.entrylength < sizeof(struct hfsplus_cat_file)) | |
589 | /* panic? */; | |
590 | hfs_bnode_read(fd.bnode, &entry, fd.entryoffset, | |
591 | sizeof(struct hfsplus_cat_file)); | |
592 | hfsplus_inode_write_fork(inode, &file->data_fork); | |
90e61690 | 593 | hfsplus_cat_set_perms(inode, &file->permissions); |
2753cc28 AS |
594 | if (HFSPLUS_FLG_IMMUTABLE & |
595 | (file->permissions.rootflags | | |
596 | file->permissions.userflags)) | |
1da177e4 LT |
597 | file->flags |= cpu_to_be16(HFSPLUS_FILE_LOCKED); |
598 | else | |
599 | file->flags &= cpu_to_be16(~HFSPLUS_FILE_LOCKED); | |
600 | file->access_date = hfsp_ut2mt(inode->i_atime); | |
601 | file->content_mod_date = hfsp_ut2mt(inode->i_mtime); | |
602 | file->attribute_mod_date = hfsp_ut2mt(inode->i_ctime); | |
603 | hfs_bnode_write(fd.bnode, &entry, fd.entryoffset, | |
604 | sizeof(struct hfsplus_cat_file)); | |
605 | } | |
e3494705 CH |
606 | |
607 | set_bit(HFSPLUS_I_CAT_DIRTY, &HFSPLUS_I(inode)->flags); | |
1da177e4 LT |
608 | out: |
609 | hfs_find_exit(&fd); | |
610 | return 0; | |
611 | } |