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> |
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 | ||
d5068485 MS |
31 | static void hfsplus_write_failed(struct address_space *mapping, loff_t to) |
32 | { | |
33 | struct inode *inode = mapping->host; | |
34 | ||
35 | if (to > inode->i_size) { | |
36 | truncate_pagecache(inode, to, inode->i_size); | |
37 | hfsplus_file_truncate(inode); | |
38 | } | |
39 | } | |
40 | ||
7c0efc62 NP |
41 | static int hfsplus_write_begin(struct file *file, struct address_space *mapping, |
42 | loff_t pos, unsigned len, unsigned flags, | |
43 | struct page **pagep, void **fsdata) | |
1da177e4 | 44 | { |
282dc178 CH |
45 | int ret; |
46 | ||
7c0efc62 | 47 | *pagep = NULL; |
282dc178 | 48 | ret = cont_write_begin(file, mapping, pos, len, flags, pagep, fsdata, |
7c0efc62 | 49 | hfsplus_get_block, |
6af502de | 50 | &HFSPLUS_I(mapping->host)->phys_size); |
d5068485 MS |
51 | if (unlikely(ret)) |
52 | hfsplus_write_failed(mapping, pos + len); | |
282dc178 CH |
53 | |
54 | return ret; | |
1da177e4 LT |
55 | } |
56 | ||
57 | static sector_t hfsplus_bmap(struct address_space *mapping, sector_t block) | |
58 | { | |
59 | return generic_block_bmap(mapping, block, hfsplus_get_block); | |
60 | } | |
61 | ||
27496a8c | 62 | static int hfsplus_releasepage(struct page *page, gfp_t mask) |
1da177e4 LT |
63 | { |
64 | struct inode *inode = page->mapping->host; | |
65 | struct super_block *sb = inode->i_sb; | |
66 | struct hfs_btree *tree; | |
67 | struct hfs_bnode *node; | |
68 | u32 nidx; | |
69 | int i, res = 1; | |
70 | ||
71 | switch (inode->i_ino) { | |
72 | case HFSPLUS_EXT_CNID: | |
dd73a01a | 73 | tree = HFSPLUS_SB(sb)->ext_tree; |
1da177e4 LT |
74 | break; |
75 | case HFSPLUS_CAT_CNID: | |
dd73a01a | 76 | tree = HFSPLUS_SB(sb)->cat_tree; |
1da177e4 LT |
77 | break; |
78 | case HFSPLUS_ATTR_CNID: | |
dd73a01a | 79 | tree = HFSPLUS_SB(sb)->attr_tree; |
1da177e4 LT |
80 | break; |
81 | default: | |
82 | BUG(); | |
83 | return 0; | |
84 | } | |
70632249 ES |
85 | if (!tree) |
86 | return 0; | |
1da177e4 | 87 | if (tree->node_size >= PAGE_CACHE_SIZE) { |
2753cc28 AS |
88 | nidx = page->index >> |
89 | (tree->node_size_shift - PAGE_CACHE_SHIFT); | |
1da177e4 LT |
90 | spin_lock(&tree->hash_lock); |
91 | node = hfs_bnode_findhash(tree, nidx); | |
92 | if (!node) | |
93 | ; | |
94 | else if (atomic_read(&node->refcnt)) | |
95 | res = 0; | |
96 | if (res && node) { | |
97 | hfs_bnode_unhash(node); | |
98 | hfs_bnode_free(node); | |
99 | } | |
100 | spin_unlock(&tree->hash_lock); | |
101 | } else { | |
2753cc28 AS |
102 | nidx = page->index << |
103 | (PAGE_CACHE_SHIFT - tree->node_size_shift); | |
1da177e4 LT |
104 | i = 1 << (PAGE_CACHE_SHIFT - tree->node_size_shift); |
105 | spin_lock(&tree->hash_lock); | |
106 | do { | |
107 | node = hfs_bnode_findhash(tree, nidx++); | |
108 | if (!node) | |
109 | continue; | |
110 | if (atomic_read(&node->refcnt)) { | |
111 | res = 0; | |
112 | break; | |
113 | } | |
114 | hfs_bnode_unhash(node); | |
115 | hfs_bnode_free(node); | |
116 | } while (--i && nidx < tree->node_count); | |
117 | spin_unlock(&tree->hash_lock); | |
118 | } | |
1da177e4 LT |
119 | return res ? try_to_free_buffers(page) : 0; |
120 | } | |
121 | ||
1da177e4 LT |
122 | static ssize_t hfsplus_direct_IO(int rw, struct kiocb *iocb, |
123 | const struct iovec *iov, loff_t offset, unsigned long nr_segs) | |
124 | { | |
125 | struct file *file = iocb->ki_filp; | |
d5068485 | 126 | struct address_space *mapping = file->f_mapping; |
f44ea031 | 127 | struct inode *inode = file->f_path.dentry->d_inode->i_mapping->host; |
eafdc7d1 | 128 | ssize_t ret; |
1da177e4 | 129 | |
aacfc19c CH |
130 | ret = blockdev_direct_IO(rw, iocb, inode, iov, offset, nr_segs, |
131 | hfsplus_get_block); | |
eafdc7d1 CH |
132 | |
133 | /* | |
134 | * In case of error extending write may have instantiated a few | |
135 | * blocks outside i_size. Trim these off again. | |
136 | */ | |
137 | if (unlikely((rw & WRITE) && ret < 0)) { | |
138 | loff_t isize = i_size_read(inode); | |
139 | loff_t end = offset + iov_length(iov, nr_segs); | |
140 | ||
141 | if (end > isize) | |
d5068485 | 142 | hfsplus_write_failed(mapping, end); |
eafdc7d1 CH |
143 | } |
144 | ||
145 | return ret; | |
1da177e4 LT |
146 | } |
147 | ||
148 | static int hfsplus_writepages(struct address_space *mapping, | |
149 | struct writeback_control *wbc) | |
150 | { | |
151 | return mpage_writepages(mapping, wbc, hfsplus_get_block); | |
152 | } | |
153 | ||
f5e54d6e | 154 | const struct address_space_operations hfsplus_btree_aops = { |
1da177e4 LT |
155 | .readpage = hfsplus_readpage, |
156 | .writepage = hfsplus_writepage, | |
7c0efc62 NP |
157 | .write_begin = hfsplus_write_begin, |
158 | .write_end = generic_write_end, | |
1da177e4 LT |
159 | .bmap = hfsplus_bmap, |
160 | .releasepage = hfsplus_releasepage, | |
161 | }; | |
162 | ||
f5e54d6e | 163 | const struct address_space_operations hfsplus_aops = { |
1da177e4 LT |
164 | .readpage = hfsplus_readpage, |
165 | .writepage = hfsplus_writepage, | |
7c0efc62 NP |
166 | .write_begin = hfsplus_write_begin, |
167 | .write_end = generic_write_end, | |
1da177e4 LT |
168 | .bmap = hfsplus_bmap, |
169 | .direct_IO = hfsplus_direct_IO, | |
170 | .writepages = hfsplus_writepages, | |
171 | }; | |
172 | ||
e16404ed | 173 | const struct dentry_operations hfsplus_dentry_operations = { |
d45bce8f DG |
174 | .d_hash = hfsplus_hash_dentry, |
175 | .d_compare = hfsplus_compare_dentry, | |
176 | }; | |
177 | ||
2753cc28 | 178 | static struct dentry *hfsplus_file_lookup(struct inode *dir, |
00cd8dd3 | 179 | struct dentry *dentry, unsigned int flags) |
1da177e4 LT |
180 | { |
181 | struct hfs_find_data fd; | |
182 | struct super_block *sb = dir->i_sb; | |
183 | struct inode *inode = NULL; | |
6af502de | 184 | struct hfsplus_inode_info *hip; |
1da177e4 LT |
185 | int err; |
186 | ||
187 | if (HFSPLUS_IS_RSRC(dir) || strcmp(dentry->d_name.name, "rsrc")) | |
188 | goto out; | |
189 | ||
6af502de | 190 | inode = HFSPLUS_I(dir)->rsrc_inode; |
1da177e4 LT |
191 | if (inode) |
192 | goto out; | |
193 | ||
194 | inode = new_inode(sb); | |
195 | if (!inode) | |
196 | return ERR_PTR(-ENOMEM); | |
197 | ||
6af502de | 198 | hip = HFSPLUS_I(inode); |
1da177e4 | 199 | inode->i_ino = dir->i_ino; |
6af502de CH |
200 | INIT_LIST_HEAD(&hip->open_dir_list); |
201 | mutex_init(&hip->extents_lock); | |
b33b7921 CH |
202 | hip->extent_state = 0; |
203 | hip->flags = 0; | |
f3922382 | 204 | hip->userflags = 0; |
b33b7921 | 205 | set_bit(HFSPLUS_I_RSRC, &hip->flags); |
1da177e4 | 206 | |
5bd9d99d AK |
207 | err = hfs_find_init(HFSPLUS_SB(sb)->cat_tree, &fd); |
208 | if (!err) { | |
209 | err = hfsplus_find_cat(sb, dir->i_ino, &fd); | |
210 | if (!err) | |
211 | err = hfsplus_cat_read_inode(inode, &fd); | |
212 | hfs_find_exit(&fd); | |
213 | } | |
1da177e4 LT |
214 | if (err) { |
215 | iput(inode); | |
216 | return ERR_PTR(err); | |
217 | } | |
6af502de CH |
218 | hip->rsrc_inode = dir; |
219 | HFSPLUS_I(dir)->rsrc_inode = inode; | |
1da177e4 | 220 | igrab(dir); |
58a818f5 CH |
221 | |
222 | /* | |
223 | * __mark_inode_dirty expects inodes to be hashed. Since we don't | |
224 | * want resource fork inodes in the regular inode space, we make them | |
225 | * appear hashed, but do not put on any lists. hlist_del() | |
226 | * will work fine and require no locking. | |
227 | */ | |
756acc2d | 228 | hlist_add_fake(&inode->i_hash); |
58a818f5 | 229 | |
1da177e4 | 230 | mark_inode_dirty(inode); |
1da177e4 LT |
231 | out: |
232 | d_add(dentry, inode); | |
233 | return NULL; | |
234 | } | |
235 | ||
2753cc28 AS |
236 | static void hfsplus_get_perms(struct inode *inode, |
237 | struct hfsplus_perm *perms, int dir) | |
1da177e4 | 238 | { |
dd73a01a | 239 | struct hfsplus_sb_info *sbi = HFSPLUS_SB(inode->i_sb); |
1da177e4 LT |
240 | u16 mode; |
241 | ||
242 | mode = be16_to_cpu(perms->mode); | |
243 | ||
16525e3f EB |
244 | i_uid_write(inode, be32_to_cpu(perms->owner)); |
245 | if (!i_uid_read(inode) && !mode) | |
dd73a01a | 246 | inode->i_uid = sbi->uid; |
1da177e4 | 247 | |
16525e3f EB |
248 | i_gid_write(inode, be32_to_cpu(perms->group)); |
249 | if (!i_gid_read(inode) && !mode) | |
dd73a01a | 250 | inode->i_gid = sbi->gid; |
1da177e4 LT |
251 | |
252 | if (dir) { | |
dd73a01a | 253 | mode = mode ? (mode & S_IALLUGO) : (S_IRWXUGO & ~(sbi->umask)); |
1da177e4 LT |
254 | mode |= S_IFDIR; |
255 | } else if (!mode) | |
dd73a01a | 256 | mode = S_IFREG | ((S_IRUGO|S_IWUGO) & ~(sbi->umask)); |
1da177e4 LT |
257 | inode->i_mode = mode; |
258 | ||
6af502de | 259 | HFSPLUS_I(inode)->userflags = perms->userflags; |
1da177e4 LT |
260 | if (perms->rootflags & HFSPLUS_FLG_IMMUTABLE) |
261 | inode->i_flags |= S_IMMUTABLE; | |
262 | else | |
263 | inode->i_flags &= ~S_IMMUTABLE; | |
264 | if (perms->rootflags & HFSPLUS_FLG_APPEND) | |
265 | inode->i_flags |= S_APPEND; | |
266 | else | |
267 | inode->i_flags &= ~S_APPEND; | |
268 | } | |
269 | ||
1da177e4 LT |
270 | static int hfsplus_file_open(struct inode *inode, struct file *file) |
271 | { | |
272 | if (HFSPLUS_IS_RSRC(inode)) | |
6af502de | 273 | inode = HFSPLUS_I(inode)->rsrc_inode; |
6e715294 AC |
274 | if (!(file->f_flags & O_LARGEFILE) && i_size_read(inode) > MAX_NON_LFS) |
275 | return -EOVERFLOW; | |
6af502de | 276 | atomic_inc(&HFSPLUS_I(inode)->opencnt); |
1da177e4 LT |
277 | return 0; |
278 | } | |
279 | ||
280 | static int hfsplus_file_release(struct inode *inode, struct file *file) | |
281 | { | |
282 | struct super_block *sb = inode->i_sb; | |
283 | ||
284 | if (HFSPLUS_IS_RSRC(inode)) | |
6af502de CH |
285 | inode = HFSPLUS_I(inode)->rsrc_inode; |
286 | if (atomic_dec_and_test(&HFSPLUS_I(inode)->opencnt)) { | |
1b1dcc1b | 287 | mutex_lock(&inode->i_mutex); |
1da177e4 LT |
288 | hfsplus_file_truncate(inode); |
289 | if (inode->i_flags & S_DEAD) { | |
dd73a01a CH |
290 | hfsplus_delete_cat(inode->i_ino, |
291 | HFSPLUS_SB(sb)->hidden_dir, NULL); | |
1da177e4 LT |
292 | hfsplus_delete_inode(inode); |
293 | } | |
1b1dcc1b | 294 | mutex_unlock(&inode->i_mutex); |
1da177e4 LT |
295 | } |
296 | return 0; | |
297 | } | |
298 | ||
d39aae9e CH |
299 | static int hfsplus_setattr(struct dentry *dentry, struct iattr *attr) |
300 | { | |
301 | struct inode *inode = dentry->d_inode; | |
302 | int error; | |
303 | ||
304 | error = inode_change_ok(inode, attr); | |
305 | if (error) | |
306 | return error; | |
1025774c CH |
307 | |
308 | if ((attr->ia_valid & ATTR_SIZE) && | |
309 | attr->ia_size != i_size_read(inode)) { | |
562c72aa | 310 | inode_dio_wait(inode); |
d5068485 MS |
311 | truncate_setsize(inode, attr->ia_size); |
312 | hfsplus_file_truncate(inode); | |
1025774c CH |
313 | } |
314 | ||
315 | setattr_copy(inode, attr); | |
316 | mark_inode_dirty(inode); | |
317 | return 0; | |
d39aae9e CH |
318 | } |
319 | ||
02c24a82 JB |
320 | int hfsplus_file_fsync(struct file *file, loff_t start, loff_t end, |
321 | int datasync) | |
b5fc510c | 322 | { |
28146976 | 323 | struct inode *inode = file->f_mapping->host; |
e3494705 | 324 | struct hfsplus_inode_info *hip = HFSPLUS_I(inode); |
28146976 | 325 | struct hfsplus_sb_info *sbi = HFSPLUS_SB(inode->i_sb); |
e3494705 | 326 | int error = 0, error2; |
b5fc510c | 327 | |
02c24a82 JB |
328 | error = filemap_write_and_wait_range(inode->i_mapping, start, end); |
329 | if (error) | |
330 | return error; | |
331 | mutex_lock(&inode->i_mutex); | |
332 | ||
28146976 CH |
333 | /* |
334 | * Sync inode metadata into the catalog and extent trees. | |
335 | */ | |
336 | sync_inode_metadata(inode, 1); | |
337 | ||
338 | /* | |
339 | * And explicitly write out the btrees. | |
340 | */ | |
e3494705 CH |
341 | if (test_and_clear_bit(HFSPLUS_I_CAT_DIRTY, &hip->flags)) |
342 | error = filemap_write_and_wait(sbi->cat_tree->inode->i_mapping); | |
343 | ||
344 | if (test_and_clear_bit(HFSPLUS_I_EXT_DIRTY, &hip->flags)) { | |
2753cc28 AS |
345 | error2 = |
346 | filemap_write_and_wait(sbi->ext_tree->inode->i_mapping); | |
e3494705 CH |
347 | if (!error) |
348 | error = error2; | |
349 | } | |
350 | ||
351 | if (test_and_clear_bit(HFSPLUS_I_ALLOC_DIRTY, &hip->flags)) { | |
352 | error2 = filemap_write_and_wait(sbi->alloc_file->i_mapping); | |
353 | if (!error) | |
354 | error = error2; | |
355 | } | |
356 | ||
34a2d313 CH |
357 | if (!test_bit(HFSPLUS_SB_NOBARRIER, &sbi->flags)) |
358 | blkdev_issue_flush(inode->i_sb->s_bdev, GFP_KERNEL, NULL); | |
359 | ||
02c24a82 JB |
360 | mutex_unlock(&inode->i_mutex); |
361 | ||
28146976 | 362 | return error; |
b5fc510c AV |
363 | } |
364 | ||
92e1d5be | 365 | static const struct inode_operations hfsplus_file_inode_operations = { |
1da177e4 | 366 | .lookup = hfsplus_file_lookup, |
d39aae9e | 367 | .setattr = hfsplus_setattr, |
1da177e4 LT |
368 | .setxattr = hfsplus_setxattr, |
369 | .getxattr = hfsplus_getxattr, | |
370 | .listxattr = hfsplus_listxattr, | |
371 | }; | |
372 | ||
4b6f5d20 | 373 | static const struct file_operations hfsplus_file_operations = { |
20b7643d | 374 | .llseek = generic_file_llseek, |
543ade1f BP |
375 | .read = do_sync_read, |
376 | .aio_read = generic_file_aio_read, | |
377 | .write = do_sync_write, | |
378 | .aio_write = generic_file_aio_write, | |
1da177e4 | 379 | .mmap = generic_file_mmap, |
5ffc4ef4 | 380 | .splice_read = generic_file_splice_read, |
b5fc510c | 381 | .fsync = hfsplus_file_fsync, |
1da177e4 LT |
382 | .open = hfsplus_file_open, |
383 | .release = hfsplus_file_release, | |
7cc4bcc6 | 384 | .unlocked_ioctl = hfsplus_ioctl, |
1da177e4 LT |
385 | }; |
386 | ||
c47da798 | 387 | struct inode *hfsplus_new_inode(struct super_block *sb, umode_t mode) |
1da177e4 | 388 | { |
dd73a01a | 389 | struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb); |
1da177e4 | 390 | struct inode *inode = new_inode(sb); |
6af502de | 391 | struct hfsplus_inode_info *hip; |
dd73a01a | 392 | |
1da177e4 LT |
393 | if (!inode) |
394 | return NULL; | |
395 | ||
dd73a01a | 396 | inode->i_ino = sbi->next_cnid++; |
1da177e4 | 397 | inode->i_mode = mode; |
4ac8489a DH |
398 | inode->i_uid = current_fsuid(); |
399 | inode->i_gid = current_fsgid(); | |
bfe86848 | 400 | set_nlink(inode, 1); |
1da177e4 | 401 | inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME_SEC; |
6af502de CH |
402 | |
403 | hip = HFSPLUS_I(inode); | |
404 | INIT_LIST_HEAD(&hip->open_dir_list); | |
405 | mutex_init(&hip->extents_lock); | |
406 | atomic_set(&hip->opencnt, 0); | |
b33b7921 | 407 | hip->extent_state = 0; |
6af502de | 408 | hip->flags = 0; |
f3922382 | 409 | hip->userflags = 0; |
6af502de CH |
410 | memset(hip->first_extents, 0, sizeof(hfsplus_extent_rec)); |
411 | memset(hip->cached_extents, 0, sizeof(hfsplus_extent_rec)); | |
412 | hip->alloc_blocks = 0; | |
413 | hip->first_blocks = 0; | |
414 | hip->cached_start = 0; | |
415 | hip->cached_blocks = 0; | |
416 | hip->phys_size = 0; | |
417 | hip->fs_blocks = 0; | |
418 | hip->rsrc_inode = NULL; | |
1da177e4 LT |
419 | if (S_ISDIR(inode->i_mode)) { |
420 | inode->i_size = 2; | |
dd73a01a | 421 | sbi->folder_count++; |
1da177e4 LT |
422 | inode->i_op = &hfsplus_dir_inode_operations; |
423 | inode->i_fop = &hfsplus_dir_operations; | |
424 | } else if (S_ISREG(inode->i_mode)) { | |
dd73a01a | 425 | sbi->file_count++; |
1da177e4 LT |
426 | inode->i_op = &hfsplus_file_inode_operations; |
427 | inode->i_fop = &hfsplus_file_operations; | |
428 | inode->i_mapping->a_ops = &hfsplus_aops; | |
6af502de | 429 | hip->clump_blocks = sbi->data_clump_blocks; |
1da177e4 | 430 | } else if (S_ISLNK(inode->i_mode)) { |
dd73a01a | 431 | sbi->file_count++; |
1da177e4 LT |
432 | inode->i_op = &page_symlink_inode_operations; |
433 | inode->i_mapping->a_ops = &hfsplus_aops; | |
6af502de | 434 | hip->clump_blocks = 1; |
1da177e4 | 435 | } else |
dd73a01a | 436 | sbi->file_count++; |
1da177e4 LT |
437 | insert_inode_hash(inode); |
438 | mark_inode_dirty(inode); | |
9e6c5829 | 439 | hfsplus_mark_mdb_dirty(sb); |
1da177e4 LT |
440 | |
441 | return inode; | |
442 | } | |
443 | ||
444 | void hfsplus_delete_inode(struct inode *inode) | |
445 | { | |
446 | struct super_block *sb = inode->i_sb; | |
447 | ||
448 | if (S_ISDIR(inode->i_mode)) { | |
dd73a01a | 449 | HFSPLUS_SB(sb)->folder_count--; |
9e6c5829 | 450 | hfsplus_mark_mdb_dirty(sb); |
1da177e4 LT |
451 | return; |
452 | } | |
dd73a01a | 453 | HFSPLUS_SB(sb)->file_count--; |
1da177e4 LT |
454 | if (S_ISREG(inode->i_mode)) { |
455 | if (!inode->i_nlink) { | |
456 | inode->i_size = 0; | |
457 | hfsplus_file_truncate(inode); | |
458 | } | |
459 | } else if (S_ISLNK(inode->i_mode)) { | |
460 | inode->i_size = 0; | |
461 | hfsplus_file_truncate(inode); | |
462 | } | |
9e6c5829 | 463 | hfsplus_mark_mdb_dirty(sb); |
1da177e4 LT |
464 | } |
465 | ||
466 | void hfsplus_inode_read_fork(struct inode *inode, struct hfsplus_fork_raw *fork) | |
467 | { | |
468 | struct super_block *sb = inode->i_sb; | |
dd73a01a | 469 | struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb); |
6af502de | 470 | struct hfsplus_inode_info *hip = HFSPLUS_I(inode); |
1da177e4 LT |
471 | u32 count; |
472 | int i; | |
473 | ||
6af502de | 474 | memcpy(&hip->first_extents, &fork->extents, sizeof(hfsplus_extent_rec)); |
1da177e4 LT |
475 | for (count = 0, i = 0; i < 8; i++) |
476 | count += be32_to_cpu(fork->extents[i].block_count); | |
6af502de CH |
477 | hip->first_blocks = count; |
478 | memset(hip->cached_extents, 0, sizeof(hfsplus_extent_rec)); | |
479 | hip->cached_start = 0; | |
480 | hip->cached_blocks = 0; | |
481 | ||
482 | hip->alloc_blocks = be32_to_cpu(fork->total_blocks); | |
483 | hip->phys_size = inode->i_size = be64_to_cpu(fork->total_size); | |
484 | hip->fs_blocks = | |
485 | (inode->i_size + sb->s_blocksize - 1) >> sb->s_blocksize_bits; | |
486 | inode_set_bytes(inode, hip->fs_blocks << sb->s_blocksize_bits); | |
487 | hip->clump_blocks = | |
dd73a01a | 488 | be32_to_cpu(fork->clump_size) >> sbi->alloc_blksz_shift; |
6af502de CH |
489 | if (!hip->clump_blocks) { |
490 | hip->clump_blocks = HFSPLUS_IS_RSRC(inode) ? | |
dd73a01a CH |
491 | sbi->rsrc_clump_blocks : |
492 | sbi->data_clump_blocks; | |
493 | } | |
1da177e4 LT |
494 | } |
495 | ||
2753cc28 AS |
496 | void hfsplus_inode_write_fork(struct inode *inode, |
497 | struct hfsplus_fork_raw *fork) | |
1da177e4 | 498 | { |
6af502de | 499 | memcpy(&fork->extents, &HFSPLUS_I(inode)->first_extents, |
1da177e4 LT |
500 | sizeof(hfsplus_extent_rec)); |
501 | fork->total_size = cpu_to_be64(inode->i_size); | |
6af502de | 502 | fork->total_blocks = cpu_to_be32(HFSPLUS_I(inode)->alloc_blocks); |
1da177e4 LT |
503 | } |
504 | ||
505 | int hfsplus_cat_read_inode(struct inode *inode, struct hfs_find_data *fd) | |
506 | { | |
507 | hfsplus_cat_entry entry; | |
508 | int res = 0; | |
509 | u16 type; | |
510 | ||
511 | type = hfs_bnode_read_u16(fd->bnode, fd->entryoffset); | |
512 | ||
f6089ff8 | 513 | HFSPLUS_I(inode)->linkid = 0; |
1da177e4 LT |
514 | if (type == HFSPLUS_FOLDER) { |
515 | struct hfsplus_cat_folder *folder = &entry.folder; | |
516 | ||
517 | if (fd->entrylength < sizeof(struct hfsplus_cat_folder)) | |
518 | /* panic? */; | |
519 | hfs_bnode_read(fd->bnode, &entry, fd->entryoffset, | |
520 | sizeof(struct hfsplus_cat_folder)); | |
521 | hfsplus_get_perms(inode, &folder->permissions, 1); | |
bfe86848 | 522 | set_nlink(inode, 1); |
1da177e4 LT |
523 | inode->i_size = 2 + be32_to_cpu(folder->valence); |
524 | inode->i_atime = hfsp_mt2ut(folder->access_date); | |
525 | inode->i_mtime = hfsp_mt2ut(folder->content_mod_date); | |
9a4cad95 | 526 | inode->i_ctime = hfsp_mt2ut(folder->attribute_mod_date); |
6af502de CH |
527 | HFSPLUS_I(inode)->create_date = folder->create_date; |
528 | HFSPLUS_I(inode)->fs_blocks = 0; | |
1da177e4 LT |
529 | inode->i_op = &hfsplus_dir_inode_operations; |
530 | inode->i_fop = &hfsplus_dir_operations; | |
531 | } else if (type == HFSPLUS_FILE) { | |
532 | struct hfsplus_cat_file *file = &entry.file; | |
533 | ||
534 | if (fd->entrylength < sizeof(struct hfsplus_cat_file)) | |
535 | /* panic? */; | |
536 | hfs_bnode_read(fd->bnode, &entry, fd->entryoffset, | |
537 | sizeof(struct hfsplus_cat_file)); | |
538 | ||
b33b7921 CH |
539 | hfsplus_inode_read_fork(inode, HFSPLUS_IS_RSRC(inode) ? |
540 | &file->rsrc_fork : &file->data_fork); | |
1da177e4 | 541 | hfsplus_get_perms(inode, &file->permissions, 0); |
bfe86848 | 542 | set_nlink(inode, 1); |
1da177e4 LT |
543 | if (S_ISREG(inode->i_mode)) { |
544 | if (file->permissions.dev) | |
bfe86848 MS |
545 | set_nlink(inode, |
546 | be32_to_cpu(file->permissions.dev)); | |
1da177e4 LT |
547 | inode->i_op = &hfsplus_file_inode_operations; |
548 | inode->i_fop = &hfsplus_file_operations; | |
549 | inode->i_mapping->a_ops = &hfsplus_aops; | |
550 | } else if (S_ISLNK(inode->i_mode)) { | |
551 | inode->i_op = &page_symlink_inode_operations; | |
552 | inode->i_mapping->a_ops = &hfsplus_aops; | |
553 | } else { | |
554 | init_special_inode(inode, inode->i_mode, | |
555 | be32_to_cpu(file->permissions.dev)); | |
556 | } | |
557 | inode->i_atime = hfsp_mt2ut(file->access_date); | |
558 | inode->i_mtime = hfsp_mt2ut(file->content_mod_date); | |
9a4cad95 | 559 | inode->i_ctime = hfsp_mt2ut(file->attribute_mod_date); |
6af502de | 560 | HFSPLUS_I(inode)->create_date = file->create_date; |
1da177e4 | 561 | } else { |
634725a9 | 562 | printk(KERN_ERR "hfs: bad catalog entry used to create inode\n"); |
1da177e4 LT |
563 | res = -EIO; |
564 | } | |
565 | return res; | |
566 | } | |
567 | ||
568 | int hfsplus_cat_write_inode(struct inode *inode) | |
569 | { | |
570 | struct inode *main_inode = inode; | |
571 | struct hfs_find_data fd; | |
572 | hfsplus_cat_entry entry; | |
573 | ||
574 | if (HFSPLUS_IS_RSRC(inode)) | |
6af502de | 575 | main_inode = HFSPLUS_I(inode)->rsrc_inode; |
1da177e4 LT |
576 | |
577 | if (!main_inode->i_nlink) | |
578 | return 0; | |
579 | ||
dd73a01a | 580 | if (hfs_find_init(HFSPLUS_SB(main_inode->i_sb)->cat_tree, &fd)) |
1da177e4 LT |
581 | /* panic? */ |
582 | return -EIO; | |
583 | ||
584 | if (hfsplus_find_cat(main_inode->i_sb, main_inode->i_ino, &fd)) | |
585 | /* panic? */ | |
586 | goto out; | |
587 | ||
588 | if (S_ISDIR(main_inode->i_mode)) { | |
589 | struct hfsplus_cat_folder *folder = &entry.folder; | |
590 | ||
591 | if (fd.entrylength < sizeof(struct hfsplus_cat_folder)) | |
592 | /* panic? */; | |
593 | hfs_bnode_read(fd.bnode, &entry, fd.entryoffset, | |
594 | sizeof(struct hfsplus_cat_folder)); | |
595 | /* simple node checks? */ | |
90e61690 | 596 | hfsplus_cat_set_perms(inode, &folder->permissions); |
1da177e4 LT |
597 | folder->access_date = hfsp_ut2mt(inode->i_atime); |
598 | folder->content_mod_date = hfsp_ut2mt(inode->i_mtime); | |
599 | folder->attribute_mod_date = hfsp_ut2mt(inode->i_ctime); | |
600 | folder->valence = cpu_to_be32(inode->i_size - 2); | |
601 | hfs_bnode_write(fd.bnode, &entry, fd.entryoffset, | |
602 | sizeof(struct hfsplus_cat_folder)); | |
603 | } else if (HFSPLUS_IS_RSRC(inode)) { | |
604 | struct hfsplus_cat_file *file = &entry.file; | |
605 | hfs_bnode_read(fd.bnode, &entry, fd.entryoffset, | |
606 | sizeof(struct hfsplus_cat_file)); | |
607 | hfsplus_inode_write_fork(inode, &file->rsrc_fork); | |
608 | hfs_bnode_write(fd.bnode, &entry, fd.entryoffset, | |
609 | sizeof(struct hfsplus_cat_file)); | |
610 | } else { | |
611 | struct hfsplus_cat_file *file = &entry.file; | |
612 | ||
613 | if (fd.entrylength < sizeof(struct hfsplus_cat_file)) | |
614 | /* panic? */; | |
615 | hfs_bnode_read(fd.bnode, &entry, fd.entryoffset, | |
616 | sizeof(struct hfsplus_cat_file)); | |
617 | hfsplus_inode_write_fork(inode, &file->data_fork); | |
90e61690 | 618 | hfsplus_cat_set_perms(inode, &file->permissions); |
2753cc28 AS |
619 | if (HFSPLUS_FLG_IMMUTABLE & |
620 | (file->permissions.rootflags | | |
621 | file->permissions.userflags)) | |
1da177e4 LT |
622 | file->flags |= cpu_to_be16(HFSPLUS_FILE_LOCKED); |
623 | else | |
624 | file->flags &= cpu_to_be16(~HFSPLUS_FILE_LOCKED); | |
625 | file->access_date = hfsp_ut2mt(inode->i_atime); | |
626 | file->content_mod_date = hfsp_ut2mt(inode->i_mtime); | |
627 | file->attribute_mod_date = hfsp_ut2mt(inode->i_ctime); | |
628 | hfs_bnode_write(fd.bnode, &entry, fd.entryoffset, | |
629 | sizeof(struct hfsplus_cat_file)); | |
630 | } | |
e3494705 CH |
631 | |
632 | set_bit(HFSPLUS_I_CAT_DIRTY, &HFSPLUS_I(inode)->flags); | |
1da177e4 LT |
633 | out: |
634 | hfs_find_exit(&fd); | |
635 | return 0; | |
636 | } |