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> |
a27bb332 | 17 | #include <linux/aio.h> |
1da177e4 LT |
18 | |
19 | #include "hfsplus_fs.h" | |
20 | #include "hfsplus_raw.h" | |
324ef39a | 21 | #include "xattr.h" |
1da177e4 LT |
22 | |
23 | static int hfsplus_readpage(struct file *file, struct page *page) | |
24 | { | |
1da177e4 LT |
25 | return block_read_full_page(page, hfsplus_get_block); |
26 | } | |
27 | ||
28 | static int hfsplus_writepage(struct page *page, struct writeback_control *wbc) | |
29 | { | |
1da177e4 LT |
30 | return block_write_full_page(page, hfsplus_get_block, wbc); |
31 | } | |
32 | ||
d5068485 MS |
33 | static void hfsplus_write_failed(struct address_space *mapping, loff_t to) |
34 | { | |
35 | struct inode *inode = mapping->host; | |
36 | ||
37 | if (to > inode->i_size) { | |
38 | truncate_pagecache(inode, to, inode->i_size); | |
39 | hfsplus_file_truncate(inode); | |
40 | } | |
41 | } | |
42 | ||
7c0efc62 NP |
43 | static int hfsplus_write_begin(struct file *file, struct address_space *mapping, |
44 | loff_t pos, unsigned len, unsigned flags, | |
45 | struct page **pagep, void **fsdata) | |
1da177e4 | 46 | { |
282dc178 CH |
47 | int ret; |
48 | ||
7c0efc62 | 49 | *pagep = NULL; |
282dc178 | 50 | ret = cont_write_begin(file, mapping, pos, len, flags, pagep, fsdata, |
7c0efc62 | 51 | hfsplus_get_block, |
6af502de | 52 | &HFSPLUS_I(mapping->host)->phys_size); |
d5068485 MS |
53 | if (unlikely(ret)) |
54 | hfsplus_write_failed(mapping, pos + len); | |
282dc178 CH |
55 | |
56 | return ret; | |
1da177e4 LT |
57 | } |
58 | ||
59 | static sector_t hfsplus_bmap(struct address_space *mapping, sector_t block) | |
60 | { | |
61 | return generic_block_bmap(mapping, block, hfsplus_get_block); | |
62 | } | |
63 | ||
27496a8c | 64 | static int hfsplus_releasepage(struct page *page, gfp_t mask) |
1da177e4 LT |
65 | { |
66 | struct inode *inode = page->mapping->host; | |
67 | struct super_block *sb = inode->i_sb; | |
68 | struct hfs_btree *tree; | |
69 | struct hfs_bnode *node; | |
70 | u32 nidx; | |
71 | int i, res = 1; | |
72 | ||
73 | switch (inode->i_ino) { | |
74 | case HFSPLUS_EXT_CNID: | |
dd73a01a | 75 | tree = HFSPLUS_SB(sb)->ext_tree; |
1da177e4 LT |
76 | break; |
77 | case HFSPLUS_CAT_CNID: | |
dd73a01a | 78 | tree = HFSPLUS_SB(sb)->cat_tree; |
1da177e4 LT |
79 | break; |
80 | case HFSPLUS_ATTR_CNID: | |
dd73a01a | 81 | tree = HFSPLUS_SB(sb)->attr_tree; |
1da177e4 LT |
82 | break; |
83 | default: | |
84 | BUG(); | |
85 | return 0; | |
86 | } | |
70632249 ES |
87 | if (!tree) |
88 | return 0; | |
1da177e4 | 89 | if (tree->node_size >= PAGE_CACHE_SIZE) { |
2753cc28 AS |
90 | nidx = page->index >> |
91 | (tree->node_size_shift - PAGE_CACHE_SHIFT); | |
1da177e4 LT |
92 | spin_lock(&tree->hash_lock); |
93 | node = hfs_bnode_findhash(tree, nidx); | |
94 | if (!node) | |
95 | ; | |
96 | else if (atomic_read(&node->refcnt)) | |
97 | res = 0; | |
98 | if (res && node) { | |
99 | hfs_bnode_unhash(node); | |
100 | hfs_bnode_free(node); | |
101 | } | |
102 | spin_unlock(&tree->hash_lock); | |
103 | } else { | |
2753cc28 AS |
104 | nidx = page->index << |
105 | (PAGE_CACHE_SHIFT - tree->node_size_shift); | |
1da177e4 LT |
106 | i = 1 << (PAGE_CACHE_SHIFT - tree->node_size_shift); |
107 | spin_lock(&tree->hash_lock); | |
108 | do { | |
109 | node = hfs_bnode_findhash(tree, nidx++); | |
110 | if (!node) | |
111 | continue; | |
112 | if (atomic_read(&node->refcnt)) { | |
113 | res = 0; | |
114 | break; | |
115 | } | |
116 | hfs_bnode_unhash(node); | |
117 | hfs_bnode_free(node); | |
118 | } while (--i && nidx < tree->node_count); | |
119 | spin_unlock(&tree->hash_lock); | |
120 | } | |
1da177e4 LT |
121 | return res ? try_to_free_buffers(page) : 0; |
122 | } | |
123 | ||
1da177e4 LT |
124 | static ssize_t hfsplus_direct_IO(int rw, struct kiocb *iocb, |
125 | const struct iovec *iov, loff_t offset, unsigned long nr_segs) | |
126 | { | |
127 | struct file *file = iocb->ki_filp; | |
d5068485 | 128 | struct address_space *mapping = file->f_mapping; |
496ad9aa | 129 | struct inode *inode = file_inode(file)->i_mapping->host; |
eafdc7d1 | 130 | ssize_t ret; |
1da177e4 | 131 | |
aacfc19c CH |
132 | ret = blockdev_direct_IO(rw, iocb, inode, iov, offset, nr_segs, |
133 | 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 | */ | |
139 | if (unlikely((rw & WRITE) && ret < 0)) { | |
140 | loff_t isize = i_size_read(inode); | |
141 | loff_t end = offset + iov_length(iov, nr_segs); | |
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 | 180 | static struct dentry *hfsplus_file_lookup(struct inode *dir, |
00cd8dd3 | 181 | struct dentry *dentry, unsigned int flags) |
1da177e4 LT |
182 | { |
183 | struct hfs_find_data fd; | |
184 | struct super_block *sb = dir->i_sb; | |
185 | struct inode *inode = NULL; | |
6af502de | 186 | struct hfsplus_inode_info *hip; |
1da177e4 LT |
187 | int err; |
188 | ||
189 | if (HFSPLUS_IS_RSRC(dir) || strcmp(dentry->d_name.name, "rsrc")) | |
190 | goto out; | |
191 | ||
6af502de | 192 | inode = HFSPLUS_I(dir)->rsrc_inode; |
1da177e4 LT |
193 | if (inode) |
194 | goto out; | |
195 | ||
196 | inode = new_inode(sb); | |
197 | if (!inode) | |
198 | return ERR_PTR(-ENOMEM); | |
199 | ||
6af502de | 200 | hip = HFSPLUS_I(inode); |
1da177e4 | 201 | inode->i_ino = dir->i_ino; |
6af502de CH |
202 | INIT_LIST_HEAD(&hip->open_dir_list); |
203 | mutex_init(&hip->extents_lock); | |
b33b7921 CH |
204 | hip->extent_state = 0; |
205 | hip->flags = 0; | |
f3922382 | 206 | hip->userflags = 0; |
b33b7921 | 207 | set_bit(HFSPLUS_I_RSRC, &hip->flags); |
1da177e4 | 208 | |
5bd9d99d AK |
209 | err = hfs_find_init(HFSPLUS_SB(sb)->cat_tree, &fd); |
210 | if (!err) { | |
211 | err = hfsplus_find_cat(sb, dir->i_ino, &fd); | |
212 | if (!err) | |
213 | err = hfsplus_cat_read_inode(inode, &fd); | |
214 | hfs_find_exit(&fd); | |
215 | } | |
1da177e4 LT |
216 | if (err) { |
217 | iput(inode); | |
218 | return ERR_PTR(err); | |
219 | } | |
6af502de CH |
220 | hip->rsrc_inode = dir; |
221 | HFSPLUS_I(dir)->rsrc_inode = inode; | |
1da177e4 | 222 | igrab(dir); |
58a818f5 CH |
223 | |
224 | /* | |
225 | * __mark_inode_dirty expects inodes to be hashed. Since we don't | |
226 | * want resource fork inodes in the regular inode space, we make them | |
227 | * appear hashed, but do not put on any lists. hlist_del() | |
228 | * will work fine and require no locking. | |
229 | */ | |
756acc2d | 230 | hlist_add_fake(&inode->i_hash); |
58a818f5 | 231 | |
1da177e4 | 232 | mark_inode_dirty(inode); |
1da177e4 LT |
233 | out: |
234 | d_add(dentry, inode); | |
235 | return NULL; | |
236 | } | |
237 | ||
2753cc28 AS |
238 | static void hfsplus_get_perms(struct inode *inode, |
239 | struct hfsplus_perm *perms, int dir) | |
1da177e4 | 240 | { |
dd73a01a | 241 | struct hfsplus_sb_info *sbi = HFSPLUS_SB(inode->i_sb); |
1da177e4 LT |
242 | u16 mode; |
243 | ||
244 | mode = be16_to_cpu(perms->mode); | |
245 | ||
16525e3f EB |
246 | i_uid_write(inode, be32_to_cpu(perms->owner)); |
247 | if (!i_uid_read(inode) && !mode) | |
dd73a01a | 248 | inode->i_uid = sbi->uid; |
1da177e4 | 249 | |
16525e3f EB |
250 | i_gid_write(inode, be32_to_cpu(perms->group)); |
251 | if (!i_gid_read(inode) && !mode) | |
dd73a01a | 252 | inode->i_gid = sbi->gid; |
1da177e4 LT |
253 | |
254 | if (dir) { | |
dd73a01a | 255 | mode = mode ? (mode & S_IALLUGO) : (S_IRWXUGO & ~(sbi->umask)); |
1da177e4 LT |
256 | mode |= S_IFDIR; |
257 | } else if (!mode) | |
dd73a01a | 258 | mode = S_IFREG | ((S_IRUGO|S_IWUGO) & ~(sbi->umask)); |
1da177e4 LT |
259 | inode->i_mode = mode; |
260 | ||
6af502de | 261 | HFSPLUS_I(inode)->userflags = perms->userflags; |
1da177e4 LT |
262 | if (perms->rootflags & HFSPLUS_FLG_IMMUTABLE) |
263 | inode->i_flags |= S_IMMUTABLE; | |
264 | else | |
265 | inode->i_flags &= ~S_IMMUTABLE; | |
266 | if (perms->rootflags & HFSPLUS_FLG_APPEND) | |
267 | inode->i_flags |= S_APPEND; | |
268 | else | |
269 | inode->i_flags &= ~S_APPEND; | |
270 | } | |
271 | ||
1da177e4 LT |
272 | static int hfsplus_file_open(struct inode *inode, struct file *file) |
273 | { | |
274 | if (HFSPLUS_IS_RSRC(inode)) | |
6af502de | 275 | inode = HFSPLUS_I(inode)->rsrc_inode; |
6e715294 AC |
276 | if (!(file->f_flags & O_LARGEFILE) && i_size_read(inode) > MAX_NON_LFS) |
277 | return -EOVERFLOW; | |
6af502de | 278 | atomic_inc(&HFSPLUS_I(inode)->opencnt); |
1da177e4 LT |
279 | return 0; |
280 | } | |
281 | ||
282 | static int hfsplus_file_release(struct inode *inode, struct file *file) | |
283 | { | |
284 | struct super_block *sb = inode->i_sb; | |
285 | ||
286 | if (HFSPLUS_IS_RSRC(inode)) | |
6af502de CH |
287 | inode = HFSPLUS_I(inode)->rsrc_inode; |
288 | if (atomic_dec_and_test(&HFSPLUS_I(inode)->opencnt)) { | |
1b1dcc1b | 289 | mutex_lock(&inode->i_mutex); |
1da177e4 LT |
290 | hfsplus_file_truncate(inode); |
291 | if (inode->i_flags & S_DEAD) { | |
dd73a01a CH |
292 | hfsplus_delete_cat(inode->i_ino, |
293 | HFSPLUS_SB(sb)->hidden_dir, NULL); | |
1da177e4 LT |
294 | hfsplus_delete_inode(inode); |
295 | } | |
1b1dcc1b | 296 | mutex_unlock(&inode->i_mutex); |
1da177e4 LT |
297 | } |
298 | return 0; | |
299 | } | |
300 | ||
d39aae9e CH |
301 | static int hfsplus_setattr(struct dentry *dentry, struct iattr *attr) |
302 | { | |
303 | struct inode *inode = dentry->d_inode; | |
304 | int error; | |
305 | ||
306 | error = inode_change_ok(inode, attr); | |
307 | if (error) | |
308 | return error; | |
1025774c CH |
309 | |
310 | if ((attr->ia_valid & ATTR_SIZE) && | |
311 | attr->ia_size != i_size_read(inode)) { | |
562c72aa | 312 | inode_dio_wait(inode); |
d5068485 MS |
313 | truncate_setsize(inode, attr->ia_size); |
314 | hfsplus_file_truncate(inode); | |
1025774c CH |
315 | } |
316 | ||
317 | setattr_copy(inode, attr); | |
318 | mark_inode_dirty(inode); | |
319 | return 0; | |
d39aae9e CH |
320 | } |
321 | ||
02c24a82 JB |
322 | int hfsplus_file_fsync(struct file *file, loff_t start, loff_t end, |
323 | int datasync) | |
b5fc510c | 324 | { |
28146976 | 325 | struct inode *inode = file->f_mapping->host; |
e3494705 | 326 | struct hfsplus_inode_info *hip = HFSPLUS_I(inode); |
28146976 | 327 | struct hfsplus_sb_info *sbi = HFSPLUS_SB(inode->i_sb); |
e3494705 | 328 | int error = 0, error2; |
b5fc510c | 329 | |
02c24a82 JB |
330 | error = filemap_write_and_wait_range(inode->i_mapping, start, end); |
331 | if (error) | |
332 | return error; | |
333 | mutex_lock(&inode->i_mutex); | |
334 | ||
28146976 CH |
335 | /* |
336 | * Sync inode metadata into the catalog and extent trees. | |
337 | */ | |
338 | sync_inode_metadata(inode, 1); | |
339 | ||
340 | /* | |
341 | * And explicitly write out the btrees. | |
342 | */ | |
e3494705 CH |
343 | if (test_and_clear_bit(HFSPLUS_I_CAT_DIRTY, &hip->flags)) |
344 | error = filemap_write_and_wait(sbi->cat_tree->inode->i_mapping); | |
345 | ||
346 | if (test_and_clear_bit(HFSPLUS_I_EXT_DIRTY, &hip->flags)) { | |
2753cc28 AS |
347 | error2 = |
348 | filemap_write_and_wait(sbi->ext_tree->inode->i_mapping); | |
e3494705 CH |
349 | if (!error) |
350 | error = error2; | |
351 | } | |
352 | ||
324ef39a VD |
353 | if (test_and_clear_bit(HFSPLUS_I_ATTR_DIRTY, &hip->flags)) { |
354 | if (sbi->attr_tree) { | |
355 | error2 = | |
356 | filemap_write_and_wait( | |
357 | sbi->attr_tree->inode->i_mapping); | |
358 | if (!error) | |
359 | error = error2; | |
360 | } else { | |
d6142673 | 361 | pr_err("sync non-existent attributes tree\n"); |
324ef39a VD |
362 | } |
363 | } | |
364 | ||
e3494705 CH |
365 | if (test_and_clear_bit(HFSPLUS_I_ALLOC_DIRTY, &hip->flags)) { |
366 | error2 = filemap_write_and_wait(sbi->alloc_file->i_mapping); | |
367 | if (!error) | |
368 | error = error2; | |
369 | } | |
370 | ||
34a2d313 CH |
371 | if (!test_bit(HFSPLUS_SB_NOBARRIER, &sbi->flags)) |
372 | blkdev_issue_flush(inode->i_sb->s_bdev, GFP_KERNEL, NULL); | |
373 | ||
02c24a82 JB |
374 | mutex_unlock(&inode->i_mutex); |
375 | ||
28146976 | 376 | return error; |
b5fc510c AV |
377 | } |
378 | ||
92e1d5be | 379 | static const struct inode_operations hfsplus_file_inode_operations = { |
1da177e4 | 380 | .lookup = hfsplus_file_lookup, |
d39aae9e | 381 | .setattr = hfsplus_setattr, |
324ef39a VD |
382 | .setxattr = generic_setxattr, |
383 | .getxattr = generic_getxattr, | |
1da177e4 | 384 | .listxattr = hfsplus_listxattr, |
324ef39a | 385 | .removexattr = hfsplus_removexattr, |
1da177e4 LT |
386 | }; |
387 | ||
4b6f5d20 | 388 | static const struct file_operations hfsplus_file_operations = { |
20b7643d | 389 | .llseek = generic_file_llseek, |
543ade1f BP |
390 | .read = do_sync_read, |
391 | .aio_read = generic_file_aio_read, | |
392 | .write = do_sync_write, | |
393 | .aio_write = generic_file_aio_write, | |
1da177e4 | 394 | .mmap = generic_file_mmap, |
5ffc4ef4 | 395 | .splice_read = generic_file_splice_read, |
b5fc510c | 396 | .fsync = hfsplus_file_fsync, |
1da177e4 LT |
397 | .open = hfsplus_file_open, |
398 | .release = hfsplus_file_release, | |
7cc4bcc6 | 399 | .unlocked_ioctl = hfsplus_ioctl, |
1da177e4 LT |
400 | }; |
401 | ||
c47da798 | 402 | struct inode *hfsplus_new_inode(struct super_block *sb, umode_t mode) |
1da177e4 | 403 | { |
dd73a01a | 404 | struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb); |
1da177e4 | 405 | struct inode *inode = new_inode(sb); |
6af502de | 406 | struct hfsplus_inode_info *hip; |
dd73a01a | 407 | |
1da177e4 LT |
408 | if (!inode) |
409 | return NULL; | |
410 | ||
dd73a01a | 411 | inode->i_ino = sbi->next_cnid++; |
1da177e4 | 412 | inode->i_mode = mode; |
4ac8489a DH |
413 | inode->i_uid = current_fsuid(); |
414 | inode->i_gid = current_fsgid(); | |
bfe86848 | 415 | set_nlink(inode, 1); |
1da177e4 | 416 | inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME_SEC; |
6af502de CH |
417 | |
418 | hip = HFSPLUS_I(inode); | |
419 | INIT_LIST_HEAD(&hip->open_dir_list); | |
420 | mutex_init(&hip->extents_lock); | |
421 | atomic_set(&hip->opencnt, 0); | |
b33b7921 | 422 | hip->extent_state = 0; |
6af502de | 423 | hip->flags = 0; |
f3922382 | 424 | hip->userflags = 0; |
6af502de CH |
425 | memset(hip->first_extents, 0, sizeof(hfsplus_extent_rec)); |
426 | memset(hip->cached_extents, 0, sizeof(hfsplus_extent_rec)); | |
427 | hip->alloc_blocks = 0; | |
428 | hip->first_blocks = 0; | |
429 | hip->cached_start = 0; | |
430 | hip->cached_blocks = 0; | |
431 | hip->phys_size = 0; | |
432 | hip->fs_blocks = 0; | |
433 | hip->rsrc_inode = NULL; | |
1da177e4 LT |
434 | if (S_ISDIR(inode->i_mode)) { |
435 | inode->i_size = 2; | |
dd73a01a | 436 | sbi->folder_count++; |
1da177e4 LT |
437 | inode->i_op = &hfsplus_dir_inode_operations; |
438 | inode->i_fop = &hfsplus_dir_operations; | |
439 | } else if (S_ISREG(inode->i_mode)) { | |
dd73a01a | 440 | sbi->file_count++; |
1da177e4 LT |
441 | inode->i_op = &hfsplus_file_inode_operations; |
442 | inode->i_fop = &hfsplus_file_operations; | |
443 | inode->i_mapping->a_ops = &hfsplus_aops; | |
6af502de | 444 | hip->clump_blocks = sbi->data_clump_blocks; |
1da177e4 | 445 | } else if (S_ISLNK(inode->i_mode)) { |
dd73a01a | 446 | sbi->file_count++; |
1da177e4 LT |
447 | inode->i_op = &page_symlink_inode_operations; |
448 | inode->i_mapping->a_ops = &hfsplus_aops; | |
6af502de | 449 | hip->clump_blocks = 1; |
1da177e4 | 450 | } else |
dd73a01a | 451 | sbi->file_count++; |
1da177e4 LT |
452 | insert_inode_hash(inode); |
453 | mark_inode_dirty(inode); | |
9e6c5829 | 454 | hfsplus_mark_mdb_dirty(sb); |
1da177e4 LT |
455 | |
456 | return inode; | |
457 | } | |
458 | ||
459 | void hfsplus_delete_inode(struct inode *inode) | |
460 | { | |
461 | struct super_block *sb = inode->i_sb; | |
462 | ||
463 | if (S_ISDIR(inode->i_mode)) { | |
dd73a01a | 464 | HFSPLUS_SB(sb)->folder_count--; |
9e6c5829 | 465 | hfsplus_mark_mdb_dirty(sb); |
1da177e4 LT |
466 | return; |
467 | } | |
dd73a01a | 468 | HFSPLUS_SB(sb)->file_count--; |
1da177e4 LT |
469 | if (S_ISREG(inode->i_mode)) { |
470 | if (!inode->i_nlink) { | |
471 | inode->i_size = 0; | |
472 | hfsplus_file_truncate(inode); | |
473 | } | |
474 | } else if (S_ISLNK(inode->i_mode)) { | |
475 | inode->i_size = 0; | |
476 | hfsplus_file_truncate(inode); | |
477 | } | |
9e6c5829 | 478 | hfsplus_mark_mdb_dirty(sb); |
1da177e4 LT |
479 | } |
480 | ||
481 | void hfsplus_inode_read_fork(struct inode *inode, struct hfsplus_fork_raw *fork) | |
482 | { | |
483 | struct super_block *sb = inode->i_sb; | |
dd73a01a | 484 | struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb); |
6af502de | 485 | struct hfsplus_inode_info *hip = HFSPLUS_I(inode); |
1da177e4 LT |
486 | u32 count; |
487 | int i; | |
488 | ||
6af502de | 489 | memcpy(&hip->first_extents, &fork->extents, sizeof(hfsplus_extent_rec)); |
1da177e4 LT |
490 | for (count = 0, i = 0; i < 8; i++) |
491 | count += be32_to_cpu(fork->extents[i].block_count); | |
6af502de CH |
492 | hip->first_blocks = count; |
493 | memset(hip->cached_extents, 0, sizeof(hfsplus_extent_rec)); | |
494 | hip->cached_start = 0; | |
495 | hip->cached_blocks = 0; | |
496 | ||
497 | hip->alloc_blocks = be32_to_cpu(fork->total_blocks); | |
498 | hip->phys_size = inode->i_size = be64_to_cpu(fork->total_size); | |
499 | hip->fs_blocks = | |
500 | (inode->i_size + sb->s_blocksize - 1) >> sb->s_blocksize_bits; | |
501 | inode_set_bytes(inode, hip->fs_blocks << sb->s_blocksize_bits); | |
502 | hip->clump_blocks = | |
dd73a01a | 503 | be32_to_cpu(fork->clump_size) >> sbi->alloc_blksz_shift; |
6af502de CH |
504 | if (!hip->clump_blocks) { |
505 | hip->clump_blocks = HFSPLUS_IS_RSRC(inode) ? | |
dd73a01a CH |
506 | sbi->rsrc_clump_blocks : |
507 | sbi->data_clump_blocks; | |
508 | } | |
1da177e4 LT |
509 | } |
510 | ||
2753cc28 AS |
511 | void hfsplus_inode_write_fork(struct inode *inode, |
512 | struct hfsplus_fork_raw *fork) | |
1da177e4 | 513 | { |
6af502de | 514 | memcpy(&fork->extents, &HFSPLUS_I(inode)->first_extents, |
1da177e4 LT |
515 | sizeof(hfsplus_extent_rec)); |
516 | fork->total_size = cpu_to_be64(inode->i_size); | |
6af502de | 517 | fork->total_blocks = cpu_to_be32(HFSPLUS_I(inode)->alloc_blocks); |
1da177e4 LT |
518 | } |
519 | ||
520 | int hfsplus_cat_read_inode(struct inode *inode, struct hfs_find_data *fd) | |
521 | { | |
522 | hfsplus_cat_entry entry; | |
523 | int res = 0; | |
524 | u16 type; | |
525 | ||
526 | type = hfs_bnode_read_u16(fd->bnode, fd->entryoffset); | |
527 | ||
f6089ff8 | 528 | HFSPLUS_I(inode)->linkid = 0; |
1da177e4 LT |
529 | if (type == HFSPLUS_FOLDER) { |
530 | struct hfsplus_cat_folder *folder = &entry.folder; | |
531 | ||
532 | if (fd->entrylength < sizeof(struct hfsplus_cat_folder)) | |
533 | /* panic? */; | |
534 | hfs_bnode_read(fd->bnode, &entry, fd->entryoffset, | |
535 | sizeof(struct hfsplus_cat_folder)); | |
536 | hfsplus_get_perms(inode, &folder->permissions, 1); | |
bfe86848 | 537 | set_nlink(inode, 1); |
1da177e4 LT |
538 | inode->i_size = 2 + be32_to_cpu(folder->valence); |
539 | inode->i_atime = hfsp_mt2ut(folder->access_date); | |
540 | inode->i_mtime = hfsp_mt2ut(folder->content_mod_date); | |
9a4cad95 | 541 | inode->i_ctime = hfsp_mt2ut(folder->attribute_mod_date); |
6af502de CH |
542 | HFSPLUS_I(inode)->create_date = folder->create_date; |
543 | HFSPLUS_I(inode)->fs_blocks = 0; | |
1da177e4 LT |
544 | inode->i_op = &hfsplus_dir_inode_operations; |
545 | inode->i_fop = &hfsplus_dir_operations; | |
546 | } else if (type == HFSPLUS_FILE) { | |
547 | struct hfsplus_cat_file *file = &entry.file; | |
548 | ||
549 | if (fd->entrylength < sizeof(struct hfsplus_cat_file)) | |
550 | /* panic? */; | |
551 | hfs_bnode_read(fd->bnode, &entry, fd->entryoffset, | |
552 | sizeof(struct hfsplus_cat_file)); | |
553 | ||
b33b7921 CH |
554 | hfsplus_inode_read_fork(inode, HFSPLUS_IS_RSRC(inode) ? |
555 | &file->rsrc_fork : &file->data_fork); | |
1da177e4 | 556 | hfsplus_get_perms(inode, &file->permissions, 0); |
bfe86848 | 557 | set_nlink(inode, 1); |
1da177e4 LT |
558 | if (S_ISREG(inode->i_mode)) { |
559 | if (file->permissions.dev) | |
bfe86848 MS |
560 | set_nlink(inode, |
561 | be32_to_cpu(file->permissions.dev)); | |
1da177e4 LT |
562 | inode->i_op = &hfsplus_file_inode_operations; |
563 | inode->i_fop = &hfsplus_file_operations; | |
564 | inode->i_mapping->a_ops = &hfsplus_aops; | |
565 | } else if (S_ISLNK(inode->i_mode)) { | |
566 | inode->i_op = &page_symlink_inode_operations; | |
567 | inode->i_mapping->a_ops = &hfsplus_aops; | |
568 | } else { | |
569 | init_special_inode(inode, inode->i_mode, | |
570 | be32_to_cpu(file->permissions.dev)); | |
571 | } | |
572 | inode->i_atime = hfsp_mt2ut(file->access_date); | |
573 | inode->i_mtime = hfsp_mt2ut(file->content_mod_date); | |
9a4cad95 | 574 | inode->i_ctime = hfsp_mt2ut(file->attribute_mod_date); |
6af502de | 575 | HFSPLUS_I(inode)->create_date = file->create_date; |
1da177e4 | 576 | } else { |
d6142673 | 577 | pr_err("bad catalog entry used to create inode\n"); |
1da177e4 LT |
578 | res = -EIO; |
579 | } | |
580 | return res; | |
581 | } | |
582 | ||
583 | int hfsplus_cat_write_inode(struct inode *inode) | |
584 | { | |
585 | struct inode *main_inode = inode; | |
586 | struct hfs_find_data fd; | |
587 | hfsplus_cat_entry entry; | |
588 | ||
589 | if (HFSPLUS_IS_RSRC(inode)) | |
6af502de | 590 | main_inode = HFSPLUS_I(inode)->rsrc_inode; |
1da177e4 LT |
591 | |
592 | if (!main_inode->i_nlink) | |
593 | return 0; | |
594 | ||
dd73a01a | 595 | if (hfs_find_init(HFSPLUS_SB(main_inode->i_sb)->cat_tree, &fd)) |
1da177e4 LT |
596 | /* panic? */ |
597 | return -EIO; | |
598 | ||
599 | if (hfsplus_find_cat(main_inode->i_sb, main_inode->i_ino, &fd)) | |
600 | /* panic? */ | |
601 | goto out; | |
602 | ||
603 | if (S_ISDIR(main_inode->i_mode)) { | |
604 | struct hfsplus_cat_folder *folder = &entry.folder; | |
605 | ||
606 | if (fd.entrylength < sizeof(struct hfsplus_cat_folder)) | |
607 | /* panic? */; | |
608 | hfs_bnode_read(fd.bnode, &entry, fd.entryoffset, | |
609 | sizeof(struct hfsplus_cat_folder)); | |
610 | /* simple node checks? */ | |
90e61690 | 611 | hfsplus_cat_set_perms(inode, &folder->permissions); |
1da177e4 LT |
612 | folder->access_date = hfsp_ut2mt(inode->i_atime); |
613 | folder->content_mod_date = hfsp_ut2mt(inode->i_mtime); | |
614 | folder->attribute_mod_date = hfsp_ut2mt(inode->i_ctime); | |
615 | folder->valence = cpu_to_be32(inode->i_size - 2); | |
616 | hfs_bnode_write(fd.bnode, &entry, fd.entryoffset, | |
617 | sizeof(struct hfsplus_cat_folder)); | |
618 | } else if (HFSPLUS_IS_RSRC(inode)) { | |
619 | struct hfsplus_cat_file *file = &entry.file; | |
620 | hfs_bnode_read(fd.bnode, &entry, fd.entryoffset, | |
621 | sizeof(struct hfsplus_cat_file)); | |
622 | hfsplus_inode_write_fork(inode, &file->rsrc_fork); | |
623 | hfs_bnode_write(fd.bnode, &entry, fd.entryoffset, | |
624 | sizeof(struct hfsplus_cat_file)); | |
625 | } else { | |
626 | struct hfsplus_cat_file *file = &entry.file; | |
627 | ||
628 | if (fd.entrylength < sizeof(struct hfsplus_cat_file)) | |
629 | /* panic? */; | |
630 | hfs_bnode_read(fd.bnode, &entry, fd.entryoffset, | |
631 | sizeof(struct hfsplus_cat_file)); | |
632 | hfsplus_inode_write_fork(inode, &file->data_fork); | |
90e61690 | 633 | hfsplus_cat_set_perms(inode, &file->permissions); |
2753cc28 AS |
634 | if (HFSPLUS_FLG_IMMUTABLE & |
635 | (file->permissions.rootflags | | |
636 | file->permissions.userflags)) | |
1da177e4 LT |
637 | file->flags |= cpu_to_be16(HFSPLUS_FILE_LOCKED); |
638 | else | |
639 | file->flags &= cpu_to_be16(~HFSPLUS_FILE_LOCKED); | |
640 | file->access_date = hfsp_ut2mt(inode->i_atime); | |
641 | file->content_mod_date = hfsp_ut2mt(inode->i_mtime); | |
642 | file->attribute_mod_date = hfsp_ut2mt(inode->i_ctime); | |
643 | hfs_bnode_write(fd.bnode, &entry, fd.entryoffset, | |
644 | sizeof(struct hfsplus_cat_file)); | |
645 | } | |
e3494705 CH |
646 | |
647 | set_bit(HFSPLUS_I_CAT_DIRTY, &HFSPLUS_I(inode)->flags); | |
1da177e4 LT |
648 | out: |
649 | hfs_find_exit(&fd); | |
650 | return 0; | |
651 | } |