Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * linux/fs/hfsplus/inode.c | |
3 | * | |
4 | * Copyright (C) 2001 | |
5 | * Brad Boyer (flar@allandria.com) | |
6 | * (C) 2003 Ardis Technologies <roman@ardistech.com> | |
7 | * | |
8 | * Inode handling routines | |
9 | */ | |
10 | ||
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; | |
09cbfeaf | 90 | if (tree->node_size >= PAGE_SIZE) { |
2753cc28 | 91 | nidx = page->index >> |
09cbfeaf | 92 | (tree->node_size_shift - PAGE_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 | 105 | nidx = page->index << |
09cbfeaf KS |
106 | (PAGE_SHIFT - tree->node_size_shift); |
107 | i = 1 << (PAGE_SHIFT - tree->node_size_shift); | |
1da177e4 LT |
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 | ||
c8b8e32d | 125 | static ssize_t hfsplus_direct_IO(struct kiocb *iocb, struct iov_iter *iter) |
1da177e4 LT |
126 | { |
127 | struct file *file = iocb->ki_filp; | |
d5068485 | 128 | struct address_space *mapping = file->f_mapping; |
93c76a3d | 129 | struct inode *inode = mapping->host; |
a6cbcd4a | 130 | size_t count = iov_iter_count(iter); |
eafdc7d1 | 131 | ssize_t ret; |
1da177e4 | 132 | |
c8b8e32d | 133 | ret = blockdev_direct_IO(iocb, inode, iter, hfsplus_get_block); |
eafdc7d1 CH |
134 | |
135 | /* | |
136 | * In case of error extending write may have instantiated a few | |
137 | * blocks outside i_size. Trim these off again. | |
138 | */ | |
6f673763 | 139 | if (unlikely(iov_iter_rw(iter) == WRITE && ret < 0)) { |
eafdc7d1 | 140 | loff_t isize = i_size_read(inode); |
c8b8e32d | 141 | loff_t end = iocb->ki_pos + count; |
eafdc7d1 CH |
142 | |
143 | if (end > isize) | |
d5068485 | 144 | hfsplus_write_failed(mapping, end); |
eafdc7d1 CH |
145 | } |
146 | ||
147 | return ret; | |
1da177e4 LT |
148 | } |
149 | ||
150 | static int hfsplus_writepages(struct address_space *mapping, | |
151 | struct writeback_control *wbc) | |
152 | { | |
153 | return mpage_writepages(mapping, wbc, hfsplus_get_block); | |
154 | } | |
155 | ||
f5e54d6e | 156 | const struct address_space_operations hfsplus_btree_aops = { |
1da177e4 LT |
157 | .readpage = hfsplus_readpage, |
158 | .writepage = hfsplus_writepage, | |
7c0efc62 NP |
159 | .write_begin = hfsplus_write_begin, |
160 | .write_end = generic_write_end, | |
1da177e4 LT |
161 | .bmap = hfsplus_bmap, |
162 | .releasepage = hfsplus_releasepage, | |
163 | }; | |
164 | ||
f5e54d6e | 165 | const struct address_space_operations hfsplus_aops = { |
1da177e4 LT |
166 | .readpage = hfsplus_readpage, |
167 | .writepage = hfsplus_writepage, | |
7c0efc62 NP |
168 | .write_begin = hfsplus_write_begin, |
169 | .write_end = generic_write_end, | |
1da177e4 LT |
170 | .bmap = hfsplus_bmap, |
171 | .direct_IO = hfsplus_direct_IO, | |
172 | .writepages = hfsplus_writepages, | |
173 | }; | |
174 | ||
e16404ed | 175 | const struct dentry_operations hfsplus_dentry_operations = { |
d45bce8f DG |
176 | .d_hash = hfsplus_hash_dentry, |
177 | .d_compare = hfsplus_compare_dentry, | |
178 | }; | |
179 | ||
2753cc28 AS |
180 | static void hfsplus_get_perms(struct inode *inode, |
181 | struct hfsplus_perm *perms, int dir) | |
1da177e4 | 182 | { |
dd73a01a | 183 | struct hfsplus_sb_info *sbi = HFSPLUS_SB(inode->i_sb); |
1da177e4 LT |
184 | u16 mode; |
185 | ||
186 | mode = be16_to_cpu(perms->mode); | |
187 | ||
16525e3f EB |
188 | i_uid_write(inode, be32_to_cpu(perms->owner)); |
189 | if (!i_uid_read(inode) && !mode) | |
dd73a01a | 190 | inode->i_uid = sbi->uid; |
1da177e4 | 191 | |
16525e3f EB |
192 | i_gid_write(inode, be32_to_cpu(perms->group)); |
193 | if (!i_gid_read(inode) && !mode) | |
dd73a01a | 194 | inode->i_gid = sbi->gid; |
1da177e4 LT |
195 | |
196 | if (dir) { | |
dd73a01a | 197 | mode = mode ? (mode & S_IALLUGO) : (S_IRWXUGO & ~(sbi->umask)); |
1da177e4 LT |
198 | mode |= S_IFDIR; |
199 | } else if (!mode) | |
dd73a01a | 200 | mode = S_IFREG | ((S_IRUGO|S_IWUGO) & ~(sbi->umask)); |
1da177e4 LT |
201 | inode->i_mode = mode; |
202 | ||
6af502de | 203 | HFSPLUS_I(inode)->userflags = perms->userflags; |
1da177e4 LT |
204 | if (perms->rootflags & HFSPLUS_FLG_IMMUTABLE) |
205 | inode->i_flags |= S_IMMUTABLE; | |
206 | else | |
207 | inode->i_flags &= ~S_IMMUTABLE; | |
208 | if (perms->rootflags & HFSPLUS_FLG_APPEND) | |
209 | inode->i_flags |= S_APPEND; | |
210 | else | |
211 | inode->i_flags &= ~S_APPEND; | |
212 | } | |
213 | ||
1da177e4 LT |
214 | static int hfsplus_file_open(struct inode *inode, struct file *file) |
215 | { | |
216 | if (HFSPLUS_IS_RSRC(inode)) | |
6af502de | 217 | inode = HFSPLUS_I(inode)->rsrc_inode; |
6e715294 AC |
218 | if (!(file->f_flags & O_LARGEFILE) && i_size_read(inode) > MAX_NON_LFS) |
219 | return -EOVERFLOW; | |
6af502de | 220 | atomic_inc(&HFSPLUS_I(inode)->opencnt); |
1da177e4 LT |
221 | return 0; |
222 | } | |
223 | ||
224 | static int hfsplus_file_release(struct inode *inode, struct file *file) | |
225 | { | |
226 | struct super_block *sb = inode->i_sb; | |
227 | ||
228 | if (HFSPLUS_IS_RSRC(inode)) | |
6af502de CH |
229 | inode = HFSPLUS_I(inode)->rsrc_inode; |
230 | if (atomic_dec_and_test(&HFSPLUS_I(inode)->opencnt)) { | |
5955102c | 231 | inode_lock(inode); |
1da177e4 LT |
232 | hfsplus_file_truncate(inode); |
233 | if (inode->i_flags & S_DEAD) { | |
dd73a01a CH |
234 | hfsplus_delete_cat(inode->i_ino, |
235 | HFSPLUS_SB(sb)->hidden_dir, NULL); | |
1da177e4 LT |
236 | hfsplus_delete_inode(inode); |
237 | } | |
5955102c | 238 | inode_unlock(inode); |
1da177e4 LT |
239 | } |
240 | return 0; | |
241 | } | |
242 | ||
d39aae9e CH |
243 | static int hfsplus_setattr(struct dentry *dentry, struct iattr *attr) |
244 | { | |
2b0143b5 | 245 | struct inode *inode = d_inode(dentry); |
d39aae9e CH |
246 | int error; |
247 | ||
248 | error = inode_change_ok(inode, attr); | |
249 | if (error) | |
250 | return error; | |
1025774c CH |
251 | |
252 | if ((attr->ia_valid & ATTR_SIZE) && | |
253 | attr->ia_size != i_size_read(inode)) { | |
562c72aa | 254 | inode_dio_wait(inode); |
059a704c SA |
255 | if (attr->ia_size > inode->i_size) { |
256 | error = generic_cont_expand_simple(inode, | |
257 | attr->ia_size); | |
258 | if (error) | |
259 | return error; | |
260 | } | |
d5068485 MS |
261 | truncate_setsize(inode, attr->ia_size); |
262 | hfsplus_file_truncate(inode); | |
1025774c CH |
263 | } |
264 | ||
265 | setattr_copy(inode, attr); | |
266 | mark_inode_dirty(inode); | |
b4c1107c VD |
267 | |
268 | if (attr->ia_valid & ATTR_MODE) { | |
b0a7ab57 | 269 | error = posix_acl_chmod(inode, inode->i_mode); |
b4c1107c VD |
270 | if (unlikely(error)) |
271 | return error; | |
272 | } | |
273 | ||
1025774c | 274 | return 0; |
d39aae9e CH |
275 | } |
276 | ||
02c24a82 JB |
277 | int hfsplus_file_fsync(struct file *file, loff_t start, loff_t end, |
278 | int datasync) | |
b5fc510c | 279 | { |
28146976 | 280 | struct inode *inode = file->f_mapping->host; |
e3494705 | 281 | struct hfsplus_inode_info *hip = HFSPLUS_I(inode); |
28146976 | 282 | struct hfsplus_sb_info *sbi = HFSPLUS_SB(inode->i_sb); |
e3494705 | 283 | int error = 0, error2; |
b5fc510c | 284 | |
02c24a82 JB |
285 | error = filemap_write_and_wait_range(inode->i_mapping, start, end); |
286 | if (error) | |
287 | return error; | |
5955102c | 288 | inode_lock(inode); |
02c24a82 | 289 | |
28146976 CH |
290 | /* |
291 | * Sync inode metadata into the catalog and extent trees. | |
292 | */ | |
293 | sync_inode_metadata(inode, 1); | |
294 | ||
295 | /* | |
296 | * And explicitly write out the btrees. | |
297 | */ | |
e3494705 CH |
298 | if (test_and_clear_bit(HFSPLUS_I_CAT_DIRTY, &hip->flags)) |
299 | error = filemap_write_and_wait(sbi->cat_tree->inode->i_mapping); | |
300 | ||
301 | if (test_and_clear_bit(HFSPLUS_I_EXT_DIRTY, &hip->flags)) { | |
2753cc28 AS |
302 | error2 = |
303 | filemap_write_and_wait(sbi->ext_tree->inode->i_mapping); | |
e3494705 CH |
304 | if (!error) |
305 | error = error2; | |
306 | } | |
307 | ||
324ef39a VD |
308 | if (test_and_clear_bit(HFSPLUS_I_ATTR_DIRTY, &hip->flags)) { |
309 | if (sbi->attr_tree) { | |
310 | error2 = | |
311 | filemap_write_and_wait( | |
312 | sbi->attr_tree->inode->i_mapping); | |
313 | if (!error) | |
314 | error = error2; | |
315 | } else { | |
d6142673 | 316 | pr_err("sync non-existent attributes tree\n"); |
324ef39a VD |
317 | } |
318 | } | |
319 | ||
e3494705 CH |
320 | if (test_and_clear_bit(HFSPLUS_I_ALLOC_DIRTY, &hip->flags)) { |
321 | error2 = filemap_write_and_wait(sbi->alloc_file->i_mapping); | |
322 | if (!error) | |
323 | error = error2; | |
324 | } | |
325 | ||
34a2d313 CH |
326 | if (!test_bit(HFSPLUS_SB_NOBARRIER, &sbi->flags)) |
327 | blkdev_issue_flush(inode->i_sb->s_bdev, GFP_KERNEL, NULL); | |
328 | ||
5955102c | 329 | inode_unlock(inode); |
02c24a82 | 330 | |
28146976 | 331 | return error; |
b5fc510c AV |
332 | } |
333 | ||
92e1d5be | 334 | static const struct inode_operations hfsplus_file_inode_operations = { |
d39aae9e | 335 | .setattr = hfsplus_setattr, |
324ef39a VD |
336 | .setxattr = generic_setxattr, |
337 | .getxattr = generic_getxattr, | |
1da177e4 | 338 | .listxattr = hfsplus_listxattr, |
b168fff7 | 339 | .removexattr = generic_removexattr, |
b4c1107c VD |
340 | #ifdef CONFIG_HFSPLUS_FS_POSIX_ACL |
341 | .get_acl = hfsplus_get_posix_acl, | |
b0a7ab57 | 342 | .set_acl = hfsplus_set_posix_acl, |
b4c1107c | 343 | #endif |
1da177e4 LT |
344 | }; |
345 | ||
4b6f5d20 | 346 | static const struct file_operations hfsplus_file_operations = { |
20b7643d | 347 | .llseek = generic_file_llseek, |
aad4f8bb | 348 | .read_iter = generic_file_read_iter, |
8174202b | 349 | .write_iter = generic_file_write_iter, |
1da177e4 | 350 | .mmap = generic_file_mmap, |
5ffc4ef4 | 351 | .splice_read = generic_file_splice_read, |
b5fc510c | 352 | .fsync = hfsplus_file_fsync, |
1da177e4 LT |
353 | .open = hfsplus_file_open, |
354 | .release = hfsplus_file_release, | |
7cc4bcc6 | 355 | .unlocked_ioctl = hfsplus_ioctl, |
1da177e4 LT |
356 | }; |
357 | ||
c47da798 | 358 | struct inode *hfsplus_new_inode(struct super_block *sb, umode_t mode) |
1da177e4 | 359 | { |
dd73a01a | 360 | struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb); |
1da177e4 | 361 | struct inode *inode = new_inode(sb); |
6af502de | 362 | struct hfsplus_inode_info *hip; |
dd73a01a | 363 | |
1da177e4 LT |
364 | if (!inode) |
365 | return NULL; | |
366 | ||
dd73a01a | 367 | inode->i_ino = sbi->next_cnid++; |
1da177e4 | 368 | inode->i_mode = mode; |
4ac8489a DH |
369 | inode->i_uid = current_fsuid(); |
370 | inode->i_gid = current_fsgid(); | |
bfe86848 | 371 | set_nlink(inode, 1); |
1da177e4 | 372 | inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME_SEC; |
6af502de CH |
373 | |
374 | hip = HFSPLUS_I(inode); | |
375 | INIT_LIST_HEAD(&hip->open_dir_list); | |
323ee8fc | 376 | spin_lock_init(&hip->open_dir_lock); |
6af502de CH |
377 | mutex_init(&hip->extents_lock); |
378 | atomic_set(&hip->opencnt, 0); | |
b33b7921 | 379 | hip->extent_state = 0; |
6af502de | 380 | hip->flags = 0; |
f3922382 | 381 | hip->userflags = 0; |
d7d673a5 | 382 | hip->subfolders = 0; |
6af502de CH |
383 | memset(hip->first_extents, 0, sizeof(hfsplus_extent_rec)); |
384 | memset(hip->cached_extents, 0, sizeof(hfsplus_extent_rec)); | |
385 | hip->alloc_blocks = 0; | |
386 | hip->first_blocks = 0; | |
387 | hip->cached_start = 0; | |
388 | hip->cached_blocks = 0; | |
389 | hip->phys_size = 0; | |
390 | hip->fs_blocks = 0; | |
391 | hip->rsrc_inode = NULL; | |
1da177e4 LT |
392 | if (S_ISDIR(inode->i_mode)) { |
393 | inode->i_size = 2; | |
dd73a01a | 394 | sbi->folder_count++; |
1da177e4 LT |
395 | inode->i_op = &hfsplus_dir_inode_operations; |
396 | inode->i_fop = &hfsplus_dir_operations; | |
397 | } else if (S_ISREG(inode->i_mode)) { | |
dd73a01a | 398 | sbi->file_count++; |
1da177e4 LT |
399 | inode->i_op = &hfsplus_file_inode_operations; |
400 | inode->i_fop = &hfsplus_file_operations; | |
401 | inode->i_mapping->a_ops = &hfsplus_aops; | |
6af502de | 402 | hip->clump_blocks = sbi->data_clump_blocks; |
1da177e4 | 403 | } else if (S_ISLNK(inode->i_mode)) { |
dd73a01a | 404 | sbi->file_count++; |
1da177e4 | 405 | inode->i_op = &page_symlink_inode_operations; |
21fc61c7 | 406 | inode_nohighmem(inode); |
1da177e4 | 407 | inode->i_mapping->a_ops = &hfsplus_aops; |
6af502de | 408 | hip->clump_blocks = 1; |
1da177e4 | 409 | } else |
dd73a01a | 410 | sbi->file_count++; |
1da177e4 LT |
411 | insert_inode_hash(inode); |
412 | mark_inode_dirty(inode); | |
9e6c5829 | 413 | hfsplus_mark_mdb_dirty(sb); |
1da177e4 LT |
414 | |
415 | return inode; | |
416 | } | |
417 | ||
418 | void hfsplus_delete_inode(struct inode *inode) | |
419 | { | |
420 | struct super_block *sb = inode->i_sb; | |
421 | ||
422 | if (S_ISDIR(inode->i_mode)) { | |
dd73a01a | 423 | HFSPLUS_SB(sb)->folder_count--; |
9e6c5829 | 424 | hfsplus_mark_mdb_dirty(sb); |
1da177e4 LT |
425 | return; |
426 | } | |
dd73a01a | 427 | HFSPLUS_SB(sb)->file_count--; |
1da177e4 LT |
428 | if (S_ISREG(inode->i_mode)) { |
429 | if (!inode->i_nlink) { | |
430 | inode->i_size = 0; | |
431 | hfsplus_file_truncate(inode); | |
432 | } | |
433 | } else if (S_ISLNK(inode->i_mode)) { | |
434 | inode->i_size = 0; | |
435 | hfsplus_file_truncate(inode); | |
436 | } | |
9e6c5829 | 437 | hfsplus_mark_mdb_dirty(sb); |
1da177e4 LT |
438 | } |
439 | ||
440 | void hfsplus_inode_read_fork(struct inode *inode, struct hfsplus_fork_raw *fork) | |
441 | { | |
442 | struct super_block *sb = inode->i_sb; | |
dd73a01a | 443 | struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb); |
6af502de | 444 | struct hfsplus_inode_info *hip = HFSPLUS_I(inode); |
1da177e4 LT |
445 | u32 count; |
446 | int i; | |
447 | ||
6af502de | 448 | memcpy(&hip->first_extents, &fork->extents, sizeof(hfsplus_extent_rec)); |
1da177e4 LT |
449 | for (count = 0, i = 0; i < 8; i++) |
450 | count += be32_to_cpu(fork->extents[i].block_count); | |
6af502de CH |
451 | hip->first_blocks = count; |
452 | memset(hip->cached_extents, 0, sizeof(hfsplus_extent_rec)); | |
453 | hip->cached_start = 0; | |
454 | hip->cached_blocks = 0; | |
455 | ||
456 | hip->alloc_blocks = be32_to_cpu(fork->total_blocks); | |
457 | hip->phys_size = inode->i_size = be64_to_cpu(fork->total_size); | |
458 | hip->fs_blocks = | |
459 | (inode->i_size + sb->s_blocksize - 1) >> sb->s_blocksize_bits; | |
460 | inode_set_bytes(inode, hip->fs_blocks << sb->s_blocksize_bits); | |
461 | hip->clump_blocks = | |
dd73a01a | 462 | be32_to_cpu(fork->clump_size) >> sbi->alloc_blksz_shift; |
6af502de CH |
463 | if (!hip->clump_blocks) { |
464 | hip->clump_blocks = HFSPLUS_IS_RSRC(inode) ? | |
dd73a01a CH |
465 | sbi->rsrc_clump_blocks : |
466 | sbi->data_clump_blocks; | |
467 | } | |
1da177e4 LT |
468 | } |
469 | ||
2753cc28 AS |
470 | void hfsplus_inode_write_fork(struct inode *inode, |
471 | struct hfsplus_fork_raw *fork) | |
1da177e4 | 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); | |
bfe86848 | 496 | set_nlink(inode, 1); |
1da177e4 LT |
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; | |
d7d673a5 SA |
503 | if (folder->flags & cpu_to_be16(HFSPLUS_HAS_FOLDER_COUNT)) { |
504 | HFSPLUS_I(inode)->subfolders = | |
505 | be32_to_cpu(folder->subfolders); | |
506 | } | |
1da177e4 LT |
507 | inode->i_op = &hfsplus_dir_inode_operations; |
508 | inode->i_fop = &hfsplus_dir_operations; | |
509 | } else if (type == HFSPLUS_FILE) { | |
510 | struct hfsplus_cat_file *file = &entry.file; | |
511 | ||
512 | if (fd->entrylength < sizeof(struct hfsplus_cat_file)) | |
513 | /* panic? */; | |
514 | hfs_bnode_read(fd->bnode, &entry, fd->entryoffset, | |
515 | sizeof(struct hfsplus_cat_file)); | |
516 | ||
b33b7921 CH |
517 | hfsplus_inode_read_fork(inode, HFSPLUS_IS_RSRC(inode) ? |
518 | &file->rsrc_fork : &file->data_fork); | |
1da177e4 | 519 | hfsplus_get_perms(inode, &file->permissions, 0); |
bfe86848 | 520 | set_nlink(inode, 1); |
1da177e4 LT |
521 | if (S_ISREG(inode->i_mode)) { |
522 | if (file->permissions.dev) | |
bfe86848 MS |
523 | set_nlink(inode, |
524 | be32_to_cpu(file->permissions.dev)); | |
1da177e4 LT |
525 | inode->i_op = &hfsplus_file_inode_operations; |
526 | inode->i_fop = &hfsplus_file_operations; | |
527 | inode->i_mapping->a_ops = &hfsplus_aops; | |
528 | } else if (S_ISLNK(inode->i_mode)) { | |
529 | inode->i_op = &page_symlink_inode_operations; | |
21fc61c7 | 530 | inode_nohighmem(inode); |
1da177e4 LT |
531 | inode->i_mapping->a_ops = &hfsplus_aops; |
532 | } else { | |
533 | init_special_inode(inode, inode->i_mode, | |
534 | be32_to_cpu(file->permissions.dev)); | |
535 | } | |
536 | inode->i_atime = hfsp_mt2ut(file->access_date); | |
537 | inode->i_mtime = hfsp_mt2ut(file->content_mod_date); | |
9a4cad95 | 538 | inode->i_ctime = hfsp_mt2ut(file->attribute_mod_date); |
6af502de | 539 | HFSPLUS_I(inode)->create_date = file->create_date; |
1da177e4 | 540 | } else { |
d6142673 | 541 | pr_err("bad catalog entry used to create inode\n"); |
1da177e4 LT |
542 | res = -EIO; |
543 | } | |
544 | return res; | |
545 | } | |
546 | ||
547 | int hfsplus_cat_write_inode(struct inode *inode) | |
548 | { | |
549 | struct inode *main_inode = inode; | |
550 | struct hfs_find_data fd; | |
551 | hfsplus_cat_entry entry; | |
552 | ||
553 | if (HFSPLUS_IS_RSRC(inode)) | |
6af502de | 554 | main_inode = HFSPLUS_I(inode)->rsrc_inode; |
1da177e4 LT |
555 | |
556 | if (!main_inode->i_nlink) | |
557 | return 0; | |
558 | ||
dd73a01a | 559 | if (hfs_find_init(HFSPLUS_SB(main_inode->i_sb)->cat_tree, &fd)) |
1da177e4 LT |
560 | /* panic? */ |
561 | return -EIO; | |
562 | ||
563 | if (hfsplus_find_cat(main_inode->i_sb, main_inode->i_ino, &fd)) | |
564 | /* panic? */ | |
565 | goto out; | |
566 | ||
567 | if (S_ISDIR(main_inode->i_mode)) { | |
568 | struct hfsplus_cat_folder *folder = &entry.folder; | |
569 | ||
570 | if (fd.entrylength < sizeof(struct hfsplus_cat_folder)) | |
571 | /* panic? */; | |
572 | hfs_bnode_read(fd.bnode, &entry, fd.entryoffset, | |
573 | sizeof(struct hfsplus_cat_folder)); | |
574 | /* simple node checks? */ | |
90e61690 | 575 | hfsplus_cat_set_perms(inode, &folder->permissions); |
1da177e4 LT |
576 | folder->access_date = hfsp_ut2mt(inode->i_atime); |
577 | folder->content_mod_date = hfsp_ut2mt(inode->i_mtime); | |
578 | folder->attribute_mod_date = hfsp_ut2mt(inode->i_ctime); | |
579 | folder->valence = cpu_to_be32(inode->i_size - 2); | |
d7d673a5 SA |
580 | if (folder->flags & cpu_to_be16(HFSPLUS_HAS_FOLDER_COUNT)) { |
581 | folder->subfolders = | |
582 | cpu_to_be32(HFSPLUS_I(inode)->subfolders); | |
583 | } | |
1da177e4 LT |
584 | hfs_bnode_write(fd.bnode, &entry, fd.entryoffset, |
585 | sizeof(struct hfsplus_cat_folder)); | |
586 | } else if (HFSPLUS_IS_RSRC(inode)) { | |
587 | struct hfsplus_cat_file *file = &entry.file; | |
588 | hfs_bnode_read(fd.bnode, &entry, fd.entryoffset, | |
589 | sizeof(struct hfsplus_cat_file)); | |
590 | hfsplus_inode_write_fork(inode, &file->rsrc_fork); | |
591 | hfs_bnode_write(fd.bnode, &entry, fd.entryoffset, | |
592 | sizeof(struct hfsplus_cat_file)); | |
593 | } else { | |
594 | struct hfsplus_cat_file *file = &entry.file; | |
595 | ||
596 | if (fd.entrylength < sizeof(struct hfsplus_cat_file)) | |
597 | /* panic? */; | |
598 | hfs_bnode_read(fd.bnode, &entry, fd.entryoffset, | |
599 | sizeof(struct hfsplus_cat_file)); | |
600 | hfsplus_inode_write_fork(inode, &file->data_fork); | |
90e61690 | 601 | hfsplus_cat_set_perms(inode, &file->permissions); |
2753cc28 AS |
602 | if (HFSPLUS_FLG_IMMUTABLE & |
603 | (file->permissions.rootflags | | |
604 | file->permissions.userflags)) | |
1da177e4 LT |
605 | file->flags |= cpu_to_be16(HFSPLUS_FILE_LOCKED); |
606 | else | |
607 | file->flags &= cpu_to_be16(~HFSPLUS_FILE_LOCKED); | |
608 | file->access_date = hfsp_ut2mt(inode->i_atime); | |
609 | file->content_mod_date = hfsp_ut2mt(inode->i_mtime); | |
610 | file->attribute_mod_date = hfsp_ut2mt(inode->i_ctime); | |
611 | hfs_bnode_write(fd.bnode, &entry, fd.entryoffset, | |
612 | sizeof(struct hfsplus_cat_file)); | |
613 | } | |
e3494705 CH |
614 | |
615 | set_bit(HFSPLUS_I_CAT_DIRTY, &HFSPLUS_I(inode)->flags); | |
1da177e4 LT |
616 | out: |
617 | hfs_find_exit(&fd); | |
618 | return 0; | |
619 | } |