Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * linux/fs/hfsplus/catalog.c | |
3 | * | |
4 | * Copyright (C) 2001 | |
5 | * Brad Boyer (flar@allandria.com) | |
6 | * (C) 2003 Ardis Technologies <roman@ardistech.com> | |
7 | * | |
8 | * Handling of catalog records | |
9 | */ | |
10 | ||
1da177e4 LT |
11 | |
12 | #include "hfsplus_fs.h" | |
13 | #include "hfsplus_raw.h" | |
14 | ||
2179d372 DE |
15 | int hfsplus_cat_case_cmp_key(const hfsplus_btree_key *k1, |
16 | const hfsplus_btree_key *k2) | |
1da177e4 LT |
17 | { |
18 | __be32 k1p, k2p; | |
19 | ||
20 | k1p = k1->cat.parent; | |
21 | k2p = k2->cat.parent; | |
22 | if (k1p != k2p) | |
23 | return be32_to_cpu(k1p) < be32_to_cpu(k2p) ? -1 : 1; | |
24 | ||
2179d372 DE |
25 | return hfsplus_strcasecmp(&k1->cat.name, &k2->cat.name); |
26 | } | |
27 | ||
28 | int hfsplus_cat_bin_cmp_key(const hfsplus_btree_key *k1, | |
29 | const hfsplus_btree_key *k2) | |
30 | { | |
31 | __be32 k1p, k2p; | |
32 | ||
33 | k1p = k1->cat.parent; | |
34 | k2p = k2->cat.parent; | |
35 | if (k1p != k2p) | |
36 | return be32_to_cpu(k1p) < be32_to_cpu(k2p) ? -1 : 1; | |
37 | ||
38 | return hfsplus_strcmp(&k1->cat.name, &k2->cat.name); | |
1da177e4 LT |
39 | } |
40 | ||
41 | void hfsplus_cat_build_key(struct super_block *sb, hfsplus_btree_key *key, | |
42 | u32 parent, struct qstr *str) | |
43 | { | |
44 | int len; | |
45 | ||
46 | key->cat.parent = cpu_to_be32(parent); | |
47 | if (str) { | |
324ef39a VD |
48 | hfsplus_asc2uni(sb, &key->cat.name, HFSPLUS_MAX_STRLEN, |
49 | str->name, str->len); | |
1da177e4 LT |
50 | len = be16_to_cpu(key->cat.name.length); |
51 | } else { | |
52 | key->cat.name.length = 0; | |
53 | len = 0; | |
54 | } | |
55 | key->key_len = cpu_to_be16(6 + 2 * len); | |
56 | } | |
57 | ||
58 | static void hfsplus_cat_build_key_uni(hfsplus_btree_key *key, u32 parent, | |
59 | struct hfsplus_unistr *name) | |
60 | { | |
61 | int ustrlen; | |
62 | ||
63 | ustrlen = be16_to_cpu(name->length); | |
64 | key->cat.parent = cpu_to_be32(parent); | |
65 | key->cat.name.length = cpu_to_be16(ustrlen); | |
66 | ustrlen *= 2; | |
67 | memcpy(key->cat.name.unicode, name->unicode, ustrlen); | |
68 | key->key_len = cpu_to_be16(6 + ustrlen); | |
69 | } | |
70 | ||
90e61690 | 71 | void hfsplus_cat_set_perms(struct inode *inode, struct hfsplus_perm *perms) |
1da177e4 LT |
72 | { |
73 | if (inode->i_flags & S_IMMUTABLE) | |
74 | perms->rootflags |= HFSPLUS_FLG_IMMUTABLE; | |
75 | else | |
76 | perms->rootflags &= ~HFSPLUS_FLG_IMMUTABLE; | |
77 | if (inode->i_flags & S_APPEND) | |
78 | perms->rootflags |= HFSPLUS_FLG_APPEND; | |
79 | else | |
80 | perms->rootflags &= ~HFSPLUS_FLG_APPEND; | |
90e61690 CH |
81 | |
82 | perms->userflags = HFSPLUS_I(inode)->userflags; | |
1da177e4 | 83 | perms->mode = cpu_to_be16(inode->i_mode); |
16525e3f EB |
84 | perms->owner = cpu_to_be32(i_uid_read(inode)); |
85 | perms->group = cpu_to_be32(i_gid_read(inode)); | |
90e61690 CH |
86 | |
87 | if (S_ISREG(inode->i_mode)) | |
88 | perms->dev = cpu_to_be32(inode->i_nlink); | |
89 | else if (S_ISBLK(inode->i_mode) || S_ISCHR(inode->i_mode)) | |
90 | perms->dev = cpu_to_be32(inode->i_rdev); | |
91 | else | |
92 | perms->dev = 0; | |
1da177e4 LT |
93 | } |
94 | ||
2753cc28 AS |
95 | static int hfsplus_cat_build_record(hfsplus_cat_entry *entry, |
96 | u32 cnid, struct inode *inode) | |
1da177e4 | 97 | { |
dd73a01a CH |
98 | struct hfsplus_sb_info *sbi = HFSPLUS_SB(inode->i_sb); |
99 | ||
1da177e4 LT |
100 | if (S_ISDIR(inode->i_mode)) { |
101 | struct hfsplus_cat_folder *folder; | |
102 | ||
103 | folder = &entry->folder; | |
104 | memset(folder, 0, sizeof(*folder)); | |
105 | folder->type = cpu_to_be16(HFSPLUS_FOLDER); | |
106 | folder->id = cpu_to_be32(inode->i_ino); | |
6af502de | 107 | HFSPLUS_I(inode)->create_date = |
9a4cad95 RZ |
108 | folder->create_date = |
109 | folder->content_mod_date = | |
110 | folder->attribute_mod_date = | |
111 | folder->access_date = hfsp_now2mt(); | |
90e61690 | 112 | hfsplus_cat_set_perms(inode, &folder->permissions); |
dd73a01a | 113 | if (inode == sbi->hidden_dir) |
1da177e4 LT |
114 | /* invisible and namelocked */ |
115 | folder->user_info.frFlags = cpu_to_be16(0x5000); | |
116 | return sizeof(*folder); | |
117 | } else { | |
118 | struct hfsplus_cat_file *file; | |
119 | ||
120 | file = &entry->file; | |
121 | memset(file, 0, sizeof(*file)); | |
122 | file->type = cpu_to_be16(HFSPLUS_FILE); | |
123 | file->flags = cpu_to_be16(HFSPLUS_FILE_THREAD_EXISTS); | |
124 | file->id = cpu_to_be32(cnid); | |
6af502de | 125 | HFSPLUS_I(inode)->create_date = |
9a4cad95 RZ |
126 | file->create_date = |
127 | file->content_mod_date = | |
128 | file->attribute_mod_date = | |
129 | file->access_date = hfsp_now2mt(); | |
1da177e4 | 130 | if (cnid == inode->i_ino) { |
90e61690 | 131 | hfsplus_cat_set_perms(inode, &file->permissions); |
6b192832 | 132 | if (S_ISLNK(inode->i_mode)) { |
2753cc28 AS |
133 | file->user_info.fdType = |
134 | cpu_to_be32(HFSP_SYMLINK_TYPE); | |
135 | file->user_info.fdCreator = | |
136 | cpu_to_be32(HFSP_SYMLINK_CREATOR); | |
6b192832 | 137 | } else { |
2753cc28 AS |
138 | file->user_info.fdType = |
139 | cpu_to_be32(sbi->type); | |
140 | file->user_info.fdCreator = | |
141 | cpu_to_be32(sbi->creator); | |
6b192832 | 142 | } |
2753cc28 AS |
143 | if (HFSPLUS_FLG_IMMUTABLE & |
144 | (file->permissions.rootflags | | |
145 | file->permissions.userflags)) | |
146 | file->flags |= | |
147 | cpu_to_be16(HFSPLUS_FILE_LOCKED); | |
1da177e4 | 148 | } else { |
2753cc28 AS |
149 | file->user_info.fdType = |
150 | cpu_to_be32(HFSP_HARDLINK_TYPE); | |
151 | file->user_info.fdCreator = | |
152 | cpu_to_be32(HFSP_HFSPLUS_CREATOR); | |
153 | file->user_info.fdFlags = | |
154 | cpu_to_be16(0x100); | |
155 | file->create_date = | |
156 | HFSPLUS_I(sbi->hidden_dir)->create_date; | |
157 | file->permissions.dev = | |
158 | cpu_to_be32(HFSPLUS_I(inode)->linkid); | |
1da177e4 LT |
159 | } |
160 | return sizeof(*file); | |
161 | } | |
162 | } | |
163 | ||
164 | static int hfsplus_fill_cat_thread(struct super_block *sb, | |
165 | hfsplus_cat_entry *entry, int type, | |
166 | u32 parentid, struct qstr *str) | |
167 | { | |
168 | entry->type = cpu_to_be16(type); | |
169 | entry->thread.reserved = 0; | |
170 | entry->thread.parentID = cpu_to_be32(parentid); | |
324ef39a VD |
171 | hfsplus_asc2uni(sb, &entry->thread.nodeName, HFSPLUS_MAX_STRLEN, |
172 | str->name, str->len); | |
1da177e4 LT |
173 | return 10 + be16_to_cpu(entry->thread.nodeName.length) * 2; |
174 | } | |
175 | ||
176 | /* Try to get a catalog entry for given catalog id */ | |
177 | int hfsplus_find_cat(struct super_block *sb, u32 cnid, | |
178 | struct hfs_find_data *fd) | |
179 | { | |
180 | hfsplus_cat_entry tmp; | |
181 | int err; | |
182 | u16 type; | |
183 | ||
184 | hfsplus_cat_build_key(sb, fd->search_key, cnid, NULL); | |
185 | err = hfs_brec_read(fd, &tmp, sizeof(hfsplus_cat_entry)); | |
186 | if (err) | |
187 | return err; | |
188 | ||
189 | type = be16_to_cpu(tmp.type); | |
190 | if (type != HFSPLUS_FOLDER_THREAD && type != HFSPLUS_FILE_THREAD) { | |
d6142673 | 191 | pr_err("found bad thread record in catalog\n"); |
1da177e4 LT |
192 | return -EIO; |
193 | } | |
194 | ||
efc7ffcb | 195 | if (be16_to_cpu(tmp.thread.nodeName.length) > 255) { |
d6142673 | 196 | pr_err("catalog name length corrupted\n"); |
efc7ffcb ES |
197 | return -EIO; |
198 | } | |
199 | ||
2753cc28 AS |
200 | hfsplus_cat_build_key_uni(fd->search_key, |
201 | be32_to_cpu(tmp.thread.parentID), | |
202 | &tmp.thread.nodeName); | |
324ef39a | 203 | return hfs_brec_find(fd, hfs_find_rec_by_key); |
1da177e4 LT |
204 | } |
205 | ||
2753cc28 AS |
206 | int hfsplus_create_cat(u32 cnid, struct inode *dir, |
207 | struct qstr *str, struct inode *inode) | |
1da177e4 | 208 | { |
dd73a01a | 209 | struct super_block *sb = dir->i_sb; |
1da177e4 | 210 | struct hfs_find_data fd; |
1da177e4 LT |
211 | hfsplus_cat_entry entry; |
212 | int entry_size; | |
213 | int err; | |
214 | ||
c2b3e1f7 | 215 | hfs_dbg(CAT_MOD, "create_cat: %s,%u(%d)\n", |
2753cc28 | 216 | str->name, cnid, inode->i_nlink); |
5bd9d99d AK |
217 | err = hfs_find_init(HFSPLUS_SB(sb)->cat_tree, &fd); |
218 | if (err) | |
219 | return err; | |
1da177e4 LT |
220 | |
221 | hfsplus_cat_build_key(sb, fd.search_key, cnid, NULL); | |
2753cc28 AS |
222 | entry_size = hfsplus_fill_cat_thread(sb, &entry, |
223 | S_ISDIR(inode->i_mode) ? | |
1da177e4 | 224 | HFSPLUS_FOLDER_THREAD : HFSPLUS_FILE_THREAD, |
2753cc28 | 225 | dir->i_ino, str); |
324ef39a | 226 | err = hfs_brec_find(&fd, hfs_find_rec_by_key); |
1da177e4 LT |
227 | if (err != -ENOENT) { |
228 | if (!err) | |
229 | err = -EEXIST; | |
230 | goto err2; | |
231 | } | |
232 | err = hfs_brec_insert(&fd, &entry, entry_size); | |
233 | if (err) | |
234 | goto err2; | |
235 | ||
236 | hfsplus_cat_build_key(sb, fd.search_key, dir->i_ino, str); | |
237 | entry_size = hfsplus_cat_build_record(&entry, cnid, inode); | |
324ef39a | 238 | err = hfs_brec_find(&fd, hfs_find_rec_by_key); |
1da177e4 LT |
239 | if (err != -ENOENT) { |
240 | /* panic? */ | |
241 | if (!err) | |
242 | err = -EEXIST; | |
243 | goto err1; | |
244 | } | |
245 | err = hfs_brec_insert(&fd, &entry, entry_size); | |
246 | if (err) | |
247 | goto err1; | |
248 | ||
249 | dir->i_size++; | |
250 | dir->i_mtime = dir->i_ctime = CURRENT_TIME_SEC; | |
e3494705 CH |
251 | hfsplus_mark_inode_dirty(dir, HFSPLUS_I_CAT_DIRTY); |
252 | ||
1da177e4 LT |
253 | hfs_find_exit(&fd); |
254 | return 0; | |
255 | ||
256 | err1: | |
257 | hfsplus_cat_build_key(sb, fd.search_key, cnid, NULL); | |
324ef39a | 258 | if (!hfs_brec_find(&fd, hfs_find_rec_by_key)) |
1da177e4 LT |
259 | hfs_brec_remove(&fd); |
260 | err2: | |
261 | hfs_find_exit(&fd); | |
262 | return err; | |
263 | } | |
264 | ||
265 | int hfsplus_delete_cat(u32 cnid, struct inode *dir, struct qstr *str) | |
266 | { | |
dd73a01a | 267 | struct super_block *sb = dir->i_sb; |
1da177e4 LT |
268 | struct hfs_find_data fd; |
269 | struct hfsplus_fork_raw fork; | |
270 | struct list_head *pos; | |
271 | int err, off; | |
272 | u16 type; | |
273 | ||
c2b3e1f7 | 274 | hfs_dbg(CAT_MOD, "delete_cat: %s,%u\n", str ? str->name : NULL, cnid); |
5bd9d99d AK |
275 | err = hfs_find_init(HFSPLUS_SB(sb)->cat_tree, &fd); |
276 | if (err) | |
277 | return err; | |
1da177e4 LT |
278 | |
279 | if (!str) { | |
280 | int len; | |
281 | ||
282 | hfsplus_cat_build_key(sb, fd.search_key, cnid, NULL); | |
324ef39a | 283 | err = hfs_brec_find(&fd, hfs_find_rec_by_key); |
1da177e4 LT |
284 | if (err) |
285 | goto out; | |
286 | ||
2753cc28 AS |
287 | off = fd.entryoffset + |
288 | offsetof(struct hfsplus_cat_thread, nodeName); | |
1da177e4 | 289 | fd.search_key->cat.parent = cpu_to_be32(dir->i_ino); |
2753cc28 AS |
290 | hfs_bnode_read(fd.bnode, |
291 | &fd.search_key->cat.name.length, off, 2); | |
1da177e4 | 292 | len = be16_to_cpu(fd.search_key->cat.name.length) * 2; |
2753cc28 AS |
293 | hfs_bnode_read(fd.bnode, |
294 | &fd.search_key->cat.name.unicode, | |
295 | off + 2, len); | |
1da177e4 LT |
296 | fd.search_key->key_len = cpu_to_be16(6 + len); |
297 | } else | |
298 | hfsplus_cat_build_key(sb, fd.search_key, dir->i_ino, str); | |
299 | ||
324ef39a | 300 | err = hfs_brec_find(&fd, hfs_find_rec_by_key); |
1da177e4 LT |
301 | if (err) |
302 | goto out; | |
303 | ||
304 | type = hfs_bnode_read_u16(fd.bnode, fd.entryoffset); | |
305 | if (type == HFSPLUS_FILE) { | |
306 | #if 0 | |
307 | off = fd.entryoffset + offsetof(hfsplus_cat_file, data_fork); | |
308 | hfs_bnode_read(fd.bnode, &fork, off, sizeof(fork)); | |
309 | hfsplus_free_fork(sb, cnid, &fork, HFSPLUS_TYPE_DATA); | |
310 | #endif | |
311 | ||
2753cc28 AS |
312 | off = fd.entryoffset + |
313 | offsetof(struct hfsplus_cat_file, rsrc_fork); | |
1da177e4 LT |
314 | hfs_bnode_read(fd.bnode, &fork, off, sizeof(fork)); |
315 | hfsplus_free_fork(sb, cnid, &fork, HFSPLUS_TYPE_RSRC); | |
316 | } | |
317 | ||
6af502de | 318 | list_for_each(pos, &HFSPLUS_I(dir)->open_dir_list) { |
1da177e4 LT |
319 | struct hfsplus_readdir_data *rd = |
320 | list_entry(pos, struct hfsplus_readdir_data, list); | |
321 | if (fd.tree->keycmp(fd.search_key, (void *)&rd->key) < 0) | |
322 | rd->file->f_pos--; | |
323 | } | |
324 | ||
325 | err = hfs_brec_remove(&fd); | |
326 | if (err) | |
327 | goto out; | |
328 | ||
329 | hfsplus_cat_build_key(sb, fd.search_key, cnid, NULL); | |
324ef39a | 330 | err = hfs_brec_find(&fd, hfs_find_rec_by_key); |
1da177e4 LT |
331 | if (err) |
332 | goto out; | |
333 | ||
334 | err = hfs_brec_remove(&fd); | |
335 | if (err) | |
336 | goto out; | |
337 | ||
338 | dir->i_size--; | |
339 | dir->i_mtime = dir->i_ctime = CURRENT_TIME_SEC; | |
e3494705 | 340 | hfsplus_mark_inode_dirty(dir, HFSPLUS_I_CAT_DIRTY); |
324ef39a VD |
341 | |
342 | if (type == HFSPLUS_FILE || type == HFSPLUS_FOLDER) { | |
343 | if (HFSPLUS_SB(sb)->attr_tree) | |
344 | hfsplus_delete_all_attrs(dir, cnid); | |
345 | } | |
346 | ||
1da177e4 LT |
347 | out: |
348 | hfs_find_exit(&fd); | |
349 | ||
350 | return err; | |
351 | } | |
352 | ||
353 | int hfsplus_rename_cat(u32 cnid, | |
354 | struct inode *src_dir, struct qstr *src_name, | |
355 | struct inode *dst_dir, struct qstr *dst_name) | |
356 | { | |
dd73a01a | 357 | struct super_block *sb = src_dir->i_sb; |
1da177e4 LT |
358 | struct hfs_find_data src_fd, dst_fd; |
359 | hfsplus_cat_entry entry; | |
360 | int entry_size, type; | |
5bd9d99d | 361 | int err; |
1da177e4 | 362 | |
c2b3e1f7 | 363 | hfs_dbg(CAT_MOD, "rename_cat: %u - %lu,%s - %lu,%s\n", |
2753cc28 | 364 | cnid, src_dir->i_ino, src_name->name, |
1da177e4 | 365 | dst_dir->i_ino, dst_name->name); |
5bd9d99d AK |
366 | err = hfs_find_init(HFSPLUS_SB(sb)->cat_tree, &src_fd); |
367 | if (err) | |
368 | return err; | |
1da177e4 LT |
369 | dst_fd = src_fd; |
370 | ||
371 | /* find the old dir entry and read the data */ | |
372 | hfsplus_cat_build_key(sb, src_fd.search_key, src_dir->i_ino, src_name); | |
324ef39a | 373 | err = hfs_brec_find(&src_fd, hfs_find_rec_by_key); |
1da177e4 LT |
374 | if (err) |
375 | goto out; | |
6f24f892 GKH |
376 | if (src_fd.entrylength > sizeof(entry) || src_fd.entrylength < 0) { |
377 | err = -EIO; | |
378 | goto out; | |
379 | } | |
1da177e4 LT |
380 | |
381 | hfs_bnode_read(src_fd.bnode, &entry, src_fd.entryoffset, | |
382 | src_fd.entrylength); | |
383 | ||
384 | /* create new dir entry with the data from the old entry */ | |
385 | hfsplus_cat_build_key(sb, dst_fd.search_key, dst_dir->i_ino, dst_name); | |
324ef39a | 386 | err = hfs_brec_find(&dst_fd, hfs_find_rec_by_key); |
1da177e4 LT |
387 | if (err != -ENOENT) { |
388 | if (!err) | |
389 | err = -EEXIST; | |
390 | goto out; | |
391 | } | |
392 | ||
393 | err = hfs_brec_insert(&dst_fd, &entry, src_fd.entrylength); | |
394 | if (err) | |
395 | goto out; | |
396 | dst_dir->i_size++; | |
397 | dst_dir->i_mtime = dst_dir->i_ctime = CURRENT_TIME_SEC; | |
1da177e4 LT |
398 | |
399 | /* finally remove the old entry */ | |
400 | hfsplus_cat_build_key(sb, src_fd.search_key, src_dir->i_ino, src_name); | |
324ef39a | 401 | err = hfs_brec_find(&src_fd, hfs_find_rec_by_key); |
1da177e4 LT |
402 | if (err) |
403 | goto out; | |
404 | err = hfs_brec_remove(&src_fd); | |
405 | if (err) | |
406 | goto out; | |
407 | src_dir->i_size--; | |
408 | src_dir->i_mtime = src_dir->i_ctime = CURRENT_TIME_SEC; | |
1da177e4 LT |
409 | |
410 | /* remove old thread entry */ | |
411 | hfsplus_cat_build_key(sb, src_fd.search_key, cnid, NULL); | |
324ef39a | 412 | err = hfs_brec_find(&src_fd, hfs_find_rec_by_key); |
1da177e4 LT |
413 | if (err) |
414 | goto out; | |
415 | type = hfs_bnode_read_u16(src_fd.bnode, src_fd.entryoffset); | |
416 | err = hfs_brec_remove(&src_fd); | |
417 | if (err) | |
418 | goto out; | |
419 | ||
420 | /* create new thread entry */ | |
421 | hfsplus_cat_build_key(sb, dst_fd.search_key, cnid, NULL); | |
2753cc28 AS |
422 | entry_size = hfsplus_fill_cat_thread(sb, &entry, type, |
423 | dst_dir->i_ino, dst_name); | |
324ef39a | 424 | err = hfs_brec_find(&dst_fd, hfs_find_rec_by_key); |
1da177e4 LT |
425 | if (err != -ENOENT) { |
426 | if (!err) | |
427 | err = -EEXIST; | |
428 | goto out; | |
429 | } | |
430 | err = hfs_brec_insert(&dst_fd, &entry, entry_size); | |
e3494705 CH |
431 | |
432 | hfsplus_mark_inode_dirty(dst_dir, HFSPLUS_I_CAT_DIRTY); | |
433 | hfsplus_mark_inode_dirty(src_dir, HFSPLUS_I_CAT_DIRTY); | |
1da177e4 LT |
434 | out: |
435 | hfs_bnode_put(dst_fd.bnode); | |
436 | hfs_find_exit(&src_fd); | |
437 | return err; | |
438 | } |