2 * linux/fs/hfsplus/catalog.c
5 * Brad Boyer (flar@allandria.com)
6 * (C) 2003 Ardis Technologies <roman@ardistech.com>
8 * Handling of catalog records
12 #include "hfsplus_fs.h"
13 #include "hfsplus_raw.h"
15 int hfsplus_cat_case_cmp_key(const hfsplus_btree_key *k1,
16 const hfsplus_btree_key *k2)
23 return be32_to_cpu(k1p) < be32_to_cpu(k2p) ? -1 : 1;
25 return hfsplus_strcasecmp(&k1->cat.name, &k2->cat.name);
28 int hfsplus_cat_bin_cmp_key(const hfsplus_btree_key *k1,
29 const hfsplus_btree_key *k2)
36 return be32_to_cpu(k1p) < be32_to_cpu(k2p) ? -1 : 1;
38 return hfsplus_strcmp(&k1->cat.name, &k2->cat.name);
41 void hfsplus_cat_build_key(struct super_block *sb, hfsplus_btree_key *key,
42 u32 parent, struct qstr *str)
46 key->cat.parent = cpu_to_be32(parent);
48 hfsplus_asc2uni(sb, &key->cat.name, HFSPLUS_MAX_STRLEN,
50 len = be16_to_cpu(key->cat.name.length);
52 key->cat.name.length = 0;
55 key->key_len = cpu_to_be16(6 + 2 * len);
58 static void hfsplus_cat_build_key_uni(hfsplus_btree_key *key, u32 parent,
59 struct hfsplus_unistr *name)
63 ustrlen = be16_to_cpu(name->length);
64 key->cat.parent = cpu_to_be32(parent);
65 key->cat.name.length = cpu_to_be16(ustrlen);
67 memcpy(key->cat.name.unicode, name->unicode, ustrlen);
68 key->key_len = cpu_to_be16(6 + ustrlen);
71 void hfsplus_cat_set_perms(struct inode *inode, struct hfsplus_perm *perms)
73 if (inode->i_flags & S_IMMUTABLE)
74 perms->rootflags |= HFSPLUS_FLG_IMMUTABLE;
76 perms->rootflags &= ~HFSPLUS_FLG_IMMUTABLE;
77 if (inode->i_flags & S_APPEND)
78 perms->rootflags |= HFSPLUS_FLG_APPEND;
80 perms->rootflags &= ~HFSPLUS_FLG_APPEND;
82 perms->userflags = HFSPLUS_I(inode)->userflags;
83 perms->mode = cpu_to_be16(inode->i_mode);
84 perms->owner = cpu_to_be32(i_uid_read(inode));
85 perms->group = cpu_to_be32(i_gid_read(inode));
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);
95 static int hfsplus_cat_build_record(hfsplus_cat_entry *entry,
96 u32 cnid, struct inode *inode)
98 struct hfsplus_sb_info *sbi = HFSPLUS_SB(inode->i_sb);
100 if (S_ISDIR(inode->i_mode)) {
101 struct hfsplus_cat_folder *folder;
103 folder = &entry->folder;
104 memset(folder, 0, sizeof(*folder));
105 folder->type = cpu_to_be16(HFSPLUS_FOLDER);
106 if (test_bit(HFSPLUS_SB_HFSX, &sbi->flags))
107 folder->flags |= cpu_to_be16(HFSPLUS_HAS_FOLDER_COUNT);
108 folder->id = cpu_to_be32(inode->i_ino);
109 HFSPLUS_I(inode)->create_date =
110 folder->create_date =
111 folder->content_mod_date =
112 folder->attribute_mod_date =
113 folder->access_date = hfsp_now2mt();
114 hfsplus_cat_set_perms(inode, &folder->permissions);
115 if (inode == sbi->hidden_dir)
116 /* invisible and namelocked */
117 folder->user_info.frFlags = cpu_to_be16(0x5000);
118 return sizeof(*folder);
120 struct hfsplus_cat_file *file;
123 memset(file, 0, sizeof(*file));
124 file->type = cpu_to_be16(HFSPLUS_FILE);
125 file->flags = cpu_to_be16(HFSPLUS_FILE_THREAD_EXISTS);
126 file->id = cpu_to_be32(cnid);
127 HFSPLUS_I(inode)->create_date =
129 file->content_mod_date =
130 file->attribute_mod_date =
131 file->access_date = hfsp_now2mt();
132 if (cnid == inode->i_ino) {
133 hfsplus_cat_set_perms(inode, &file->permissions);
134 if (S_ISLNK(inode->i_mode)) {
135 file->user_info.fdType =
136 cpu_to_be32(HFSP_SYMLINK_TYPE);
137 file->user_info.fdCreator =
138 cpu_to_be32(HFSP_SYMLINK_CREATOR);
140 file->user_info.fdType =
141 cpu_to_be32(sbi->type);
142 file->user_info.fdCreator =
143 cpu_to_be32(sbi->creator);
145 if (HFSPLUS_FLG_IMMUTABLE &
146 (file->permissions.rootflags |
147 file->permissions.userflags))
149 cpu_to_be16(HFSPLUS_FILE_LOCKED);
151 file->user_info.fdType =
152 cpu_to_be32(HFSP_HARDLINK_TYPE);
153 file->user_info.fdCreator =
154 cpu_to_be32(HFSP_HFSPLUS_CREATOR);
155 file->user_info.fdFlags =
158 HFSPLUS_I(sbi->hidden_dir)->create_date;
159 file->permissions.dev =
160 cpu_to_be32(HFSPLUS_I(inode)->linkid);
162 return sizeof(*file);
166 static int hfsplus_fill_cat_thread(struct super_block *sb,
167 hfsplus_cat_entry *entry, int type,
168 u32 parentid, struct qstr *str)
170 entry->type = cpu_to_be16(type);
171 entry->thread.reserved = 0;
172 entry->thread.parentID = cpu_to_be32(parentid);
173 hfsplus_asc2uni(sb, &entry->thread.nodeName, HFSPLUS_MAX_STRLEN,
174 str->name, str->len);
175 return 10 + be16_to_cpu(entry->thread.nodeName.length) * 2;
178 /* Try to get a catalog entry for given catalog id */
179 int hfsplus_find_cat(struct super_block *sb, u32 cnid,
180 struct hfs_find_data *fd)
182 hfsplus_cat_entry tmp;
186 hfsplus_cat_build_key(sb, fd->search_key, cnid, NULL);
187 err = hfs_brec_read(fd, &tmp, sizeof(hfsplus_cat_entry));
191 type = be16_to_cpu(tmp.type);
192 if (type != HFSPLUS_FOLDER_THREAD && type != HFSPLUS_FILE_THREAD) {
193 pr_err("found bad thread record in catalog\n");
197 if (be16_to_cpu(tmp.thread.nodeName.length) > 255) {
198 pr_err("catalog name length corrupted\n");
202 hfsplus_cat_build_key_uni(fd->search_key,
203 be32_to_cpu(tmp.thread.parentID),
204 &tmp.thread.nodeName);
205 return hfs_brec_find(fd, hfs_find_rec_by_key);
208 static void hfsplus_subfolders_inc(struct inode *dir)
210 struct hfsplus_sb_info *sbi = HFSPLUS_SB(dir->i_sb);
212 if (test_bit(HFSPLUS_SB_HFSX, &sbi->flags)) {
214 * Increment subfolder count. Note, the value is only meaningful
215 * for folders with HFSPLUS_HAS_FOLDER_COUNT flag set.
217 HFSPLUS_I(dir)->subfolders++;
221 static void hfsplus_subfolders_dec(struct inode *dir)
223 struct hfsplus_sb_info *sbi = HFSPLUS_SB(dir->i_sb);
225 if (test_bit(HFSPLUS_SB_HFSX, &sbi->flags)) {
227 * Decrement subfolder count. Note, the value is only meaningful
228 * for folders with HFSPLUS_HAS_FOLDER_COUNT flag set.
230 * Check for zero. Some subfolders may have been created
231 * by an implementation ignorant of this counter.
233 if (HFSPLUS_I(dir)->subfolders)
234 HFSPLUS_I(dir)->subfolders--;
238 int hfsplus_create_cat(u32 cnid, struct inode *dir,
239 struct qstr *str, struct inode *inode)
241 struct super_block *sb = dir->i_sb;
242 struct hfs_find_data fd;
243 hfsplus_cat_entry entry;
247 hfs_dbg(CAT_MOD, "create_cat: %s,%u(%d)\n",
248 str->name, cnid, inode->i_nlink);
249 err = hfs_find_init(HFSPLUS_SB(sb)->cat_tree, &fd);
253 hfsplus_cat_build_key(sb, fd.search_key, cnid, NULL);
254 entry_size = hfsplus_fill_cat_thread(sb, &entry,
255 S_ISDIR(inode->i_mode) ?
256 HFSPLUS_FOLDER_THREAD : HFSPLUS_FILE_THREAD,
258 err = hfs_brec_find(&fd, hfs_find_rec_by_key);
259 if (err != -ENOENT) {
264 err = hfs_brec_insert(&fd, &entry, entry_size);
268 hfsplus_cat_build_key(sb, fd.search_key, dir->i_ino, str);
269 entry_size = hfsplus_cat_build_record(&entry, cnid, inode);
270 err = hfs_brec_find(&fd, hfs_find_rec_by_key);
271 if (err != -ENOENT) {
277 err = hfs_brec_insert(&fd, &entry, entry_size);
282 if (S_ISDIR(inode->i_mode))
283 hfsplus_subfolders_inc(dir);
284 dir->i_mtime = dir->i_ctime = CURRENT_TIME_SEC;
285 hfsplus_mark_inode_dirty(dir, HFSPLUS_I_CAT_DIRTY);
291 hfsplus_cat_build_key(sb, fd.search_key, cnid, NULL);
292 if (!hfs_brec_find(&fd, hfs_find_rec_by_key))
293 hfs_brec_remove(&fd);
299 int hfsplus_delete_cat(u32 cnid, struct inode *dir, struct qstr *str)
301 struct super_block *sb = dir->i_sb;
302 struct hfs_find_data fd;
303 struct hfsplus_fork_raw fork;
304 struct list_head *pos;
308 hfs_dbg(CAT_MOD, "delete_cat: %s,%u\n", str ? str->name : NULL, cnid);
309 err = hfs_find_init(HFSPLUS_SB(sb)->cat_tree, &fd);
316 hfsplus_cat_build_key(sb, fd.search_key, cnid, NULL);
317 err = hfs_brec_find(&fd, hfs_find_rec_by_key);
321 off = fd.entryoffset +
322 offsetof(struct hfsplus_cat_thread, nodeName);
323 fd.search_key->cat.parent = cpu_to_be32(dir->i_ino);
324 hfs_bnode_read(fd.bnode,
325 &fd.search_key->cat.name.length, off, 2);
326 len = be16_to_cpu(fd.search_key->cat.name.length) * 2;
327 hfs_bnode_read(fd.bnode,
328 &fd.search_key->cat.name.unicode,
330 fd.search_key->key_len = cpu_to_be16(6 + len);
332 hfsplus_cat_build_key(sb, fd.search_key, dir->i_ino, str);
334 err = hfs_brec_find(&fd, hfs_find_rec_by_key);
338 type = hfs_bnode_read_u16(fd.bnode, fd.entryoffset);
339 if (type == HFSPLUS_FILE) {
341 off = fd.entryoffset + offsetof(hfsplus_cat_file, data_fork);
342 hfs_bnode_read(fd.bnode, &fork, off, sizeof(fork));
343 hfsplus_free_fork(sb, cnid, &fork, HFSPLUS_TYPE_DATA);
346 off = fd.entryoffset +
347 offsetof(struct hfsplus_cat_file, rsrc_fork);
348 hfs_bnode_read(fd.bnode, &fork, off, sizeof(fork));
349 hfsplus_free_fork(sb, cnid, &fork, HFSPLUS_TYPE_RSRC);
352 list_for_each(pos, &HFSPLUS_I(dir)->open_dir_list) {
353 struct hfsplus_readdir_data *rd =
354 list_entry(pos, struct hfsplus_readdir_data, list);
355 if (fd.tree->keycmp(fd.search_key, (void *)&rd->key) < 0)
359 err = hfs_brec_remove(&fd);
363 hfsplus_cat_build_key(sb, fd.search_key, cnid, NULL);
364 err = hfs_brec_find(&fd, hfs_find_rec_by_key);
368 err = hfs_brec_remove(&fd);
373 if (type == HFSPLUS_FOLDER)
374 hfsplus_subfolders_dec(dir);
375 dir->i_mtime = dir->i_ctime = CURRENT_TIME_SEC;
376 hfsplus_mark_inode_dirty(dir, HFSPLUS_I_CAT_DIRTY);
378 if (type == HFSPLUS_FILE || type == HFSPLUS_FOLDER) {
379 if (HFSPLUS_SB(sb)->attr_tree)
380 hfsplus_delete_all_attrs(dir, cnid);
389 int hfsplus_rename_cat(u32 cnid,
390 struct inode *src_dir, struct qstr *src_name,
391 struct inode *dst_dir, struct qstr *dst_name)
393 struct super_block *sb = src_dir->i_sb;
394 struct hfs_find_data src_fd, dst_fd;
395 hfsplus_cat_entry entry;
396 int entry_size, type;
399 hfs_dbg(CAT_MOD, "rename_cat: %u - %lu,%s - %lu,%s\n",
400 cnid, src_dir->i_ino, src_name->name,
401 dst_dir->i_ino, dst_name->name);
402 err = hfs_find_init(HFSPLUS_SB(sb)->cat_tree, &src_fd);
407 /* find the old dir entry and read the data */
408 hfsplus_cat_build_key(sb, src_fd.search_key, src_dir->i_ino, src_name);
409 err = hfs_brec_find(&src_fd, hfs_find_rec_by_key);
412 if (src_fd.entrylength > sizeof(entry) || src_fd.entrylength < 0) {
417 hfs_bnode_read(src_fd.bnode, &entry, src_fd.entryoffset,
419 type = be16_to_cpu(entry.type);
421 /* create new dir entry with the data from the old entry */
422 hfsplus_cat_build_key(sb, dst_fd.search_key, dst_dir->i_ino, dst_name);
423 err = hfs_brec_find(&dst_fd, hfs_find_rec_by_key);
424 if (err != -ENOENT) {
430 err = hfs_brec_insert(&dst_fd, &entry, src_fd.entrylength);
434 if (type == HFSPLUS_FOLDER)
435 hfsplus_subfolders_inc(dst_dir);
436 dst_dir->i_mtime = dst_dir->i_ctime = CURRENT_TIME_SEC;
438 /* finally remove the old entry */
439 hfsplus_cat_build_key(sb, src_fd.search_key, src_dir->i_ino, src_name);
440 err = hfs_brec_find(&src_fd, hfs_find_rec_by_key);
443 err = hfs_brec_remove(&src_fd);
447 if (type == HFSPLUS_FOLDER)
448 hfsplus_subfolders_dec(src_dir);
449 src_dir->i_mtime = src_dir->i_ctime = CURRENT_TIME_SEC;
451 /* remove old thread entry */
452 hfsplus_cat_build_key(sb, src_fd.search_key, cnid, NULL);
453 err = hfs_brec_find(&src_fd, hfs_find_rec_by_key);
456 type = hfs_bnode_read_u16(src_fd.bnode, src_fd.entryoffset);
457 err = hfs_brec_remove(&src_fd);
461 /* create new thread entry */
462 hfsplus_cat_build_key(sb, dst_fd.search_key, cnid, NULL);
463 entry_size = hfsplus_fill_cat_thread(sb, &entry, type,
464 dst_dir->i_ino, dst_name);
465 err = hfs_brec_find(&dst_fd, hfs_find_rec_by_key);
466 if (err != -ENOENT) {
471 err = hfs_brec_insert(&dst_fd, &entry, entry_size);
473 hfsplus_mark_inode_dirty(dst_dir, HFSPLUS_I_CAT_DIRTY);
474 hfsplus_mark_inode_dirty(src_dir, HFSPLUS_I_CAT_DIRTY);
476 hfs_bnode_put(dst_fd.bnode);
477 hfs_find_exit(&src_fd);