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, str->name, str->len);
49 len = be16_to_cpu(key->cat.name.length);
51 key->cat.name.length = 0;
54 key->key_len = cpu_to_be16(6 + 2 * len);
57 static void hfsplus_cat_build_key_uni(hfsplus_btree_key *key, u32 parent,
58 struct hfsplus_unistr *name)
62 ustrlen = be16_to_cpu(name->length);
63 key->cat.parent = cpu_to_be32(parent);
64 key->cat.name.length = cpu_to_be16(ustrlen);
66 memcpy(key->cat.name.unicode, name->unicode, ustrlen);
67 key->key_len = cpu_to_be16(6 + ustrlen);
70 static void hfsplus_set_perms(struct inode *inode, struct hfsplus_perm *perms)
72 if (inode->i_flags & S_IMMUTABLE)
73 perms->rootflags |= HFSPLUS_FLG_IMMUTABLE;
75 perms->rootflags &= ~HFSPLUS_FLG_IMMUTABLE;
76 if (inode->i_flags & S_APPEND)
77 perms->rootflags |= HFSPLUS_FLG_APPEND;
79 perms->rootflags &= ~HFSPLUS_FLG_APPEND;
80 HFSPLUS_I(inode).rootflags = perms->rootflags;
81 HFSPLUS_I(inode).userflags = perms->userflags;
82 perms->mode = cpu_to_be16(inode->i_mode);
83 perms->owner = cpu_to_be32(inode->i_uid);
84 perms->group = cpu_to_be32(inode->i_gid);
87 static int hfsplus_cat_build_record(hfsplus_cat_entry *entry, u32 cnid, struct inode *inode)
89 if (S_ISDIR(inode->i_mode)) {
90 struct hfsplus_cat_folder *folder;
92 folder = &entry->folder;
93 memset(folder, 0, sizeof(*folder));
94 folder->type = cpu_to_be16(HFSPLUS_FOLDER);
95 folder->id = cpu_to_be32(inode->i_ino);
96 HFSPLUS_I(inode).create_date =
98 folder->content_mod_date =
99 folder->attribute_mod_date =
100 folder->access_date = hfsp_now2mt();
101 hfsplus_set_perms(inode, &folder->permissions);
102 if (inode == HFSPLUS_SB(inode->i_sb).hidden_dir)
103 /* invisible and namelocked */
104 folder->user_info.frFlags = cpu_to_be16(0x5000);
105 return sizeof(*folder);
107 struct hfsplus_cat_file *file;
110 memset(file, 0, sizeof(*file));
111 file->type = cpu_to_be16(HFSPLUS_FILE);
112 file->flags = cpu_to_be16(HFSPLUS_FILE_THREAD_EXISTS);
113 file->id = cpu_to_be32(cnid);
114 HFSPLUS_I(inode).create_date =
116 file->content_mod_date =
117 file->attribute_mod_date =
118 file->access_date = hfsp_now2mt();
119 if (cnid == inode->i_ino) {
120 hfsplus_set_perms(inode, &file->permissions);
121 if (S_ISLNK(inode->i_mode)) {
122 file->user_info.fdType = cpu_to_be32(HFSP_SYMLINK_TYPE);
123 file->user_info.fdCreator = cpu_to_be32(HFSP_SYMLINK_CREATOR);
125 file->user_info.fdType = cpu_to_be32(HFSPLUS_SB(inode->i_sb).type);
126 file->user_info.fdCreator = cpu_to_be32(HFSPLUS_SB(inode->i_sb).creator);
128 if ((file->permissions.rootflags | file->permissions.userflags) & HFSPLUS_FLG_IMMUTABLE)
129 file->flags |= cpu_to_be16(HFSPLUS_FILE_LOCKED);
131 file->user_info.fdType = cpu_to_be32(HFSP_HARDLINK_TYPE);
132 file->user_info.fdCreator = cpu_to_be32(HFSP_HFSPLUS_CREATOR);
133 file->user_info.fdFlags = cpu_to_be16(0x100);
134 file->create_date = HFSPLUS_I(HFSPLUS_SB(inode->i_sb).hidden_dir).create_date;
135 file->permissions.dev = cpu_to_be32(HFSPLUS_I(inode).dev);
137 return sizeof(*file);
141 static int hfsplus_fill_cat_thread(struct super_block *sb,
142 hfsplus_cat_entry *entry, int type,
143 u32 parentid, struct qstr *str)
145 entry->type = cpu_to_be16(type);
146 entry->thread.reserved = 0;
147 entry->thread.parentID = cpu_to_be32(parentid);
148 hfsplus_asc2uni(sb, &entry->thread.nodeName, str->name, str->len);
149 return 10 + be16_to_cpu(entry->thread.nodeName.length) * 2;
152 /* Try to get a catalog entry for given catalog id */
153 int hfsplus_find_cat(struct super_block *sb, u32 cnid,
154 struct hfs_find_data *fd)
156 hfsplus_cat_entry tmp;
160 hfsplus_cat_build_key(sb, fd->search_key, cnid, NULL);
161 err = hfs_brec_read(fd, &tmp, sizeof(hfsplus_cat_entry));
165 type = be16_to_cpu(tmp.type);
166 if (type != HFSPLUS_FOLDER_THREAD && type != HFSPLUS_FILE_THREAD) {
167 printk(KERN_ERR "hfs: found bad thread record in catalog\n");
171 if (be16_to_cpu(tmp.thread.nodeName.length) > 255) {
172 printk(KERN_ERR "hfs: catalog name length corrupted\n");
176 hfsplus_cat_build_key_uni(fd->search_key, be32_to_cpu(tmp.thread.parentID),
177 &tmp.thread.nodeName);
178 return hfs_brec_find(fd);
181 int hfsplus_create_cat(u32 cnid, struct inode *dir, struct qstr *str, struct inode *inode)
183 struct hfs_find_data fd;
184 struct super_block *sb;
185 hfsplus_cat_entry entry;
189 dprint(DBG_CAT_MOD, "create_cat: %s,%u(%d)\n", str->name, cnid, inode->i_nlink);
191 hfs_find_init(HFSPLUS_SB(sb).cat_tree, &fd);
193 hfsplus_cat_build_key(sb, fd.search_key, cnid, NULL);
194 entry_size = hfsplus_fill_cat_thread(sb, &entry, S_ISDIR(inode->i_mode) ?
195 HFSPLUS_FOLDER_THREAD : HFSPLUS_FILE_THREAD,
197 err = hfs_brec_find(&fd);
198 if (err != -ENOENT) {
203 err = hfs_brec_insert(&fd, &entry, entry_size);
207 hfsplus_cat_build_key(sb, fd.search_key, dir->i_ino, str);
208 entry_size = hfsplus_cat_build_record(&entry, cnid, inode);
209 err = hfs_brec_find(&fd);
210 if (err != -ENOENT) {
216 err = hfs_brec_insert(&fd, &entry, entry_size);
221 dir->i_mtime = dir->i_ctime = CURRENT_TIME_SEC;
222 mark_inode_dirty(dir);
227 hfsplus_cat_build_key(sb, fd.search_key, cnid, NULL);
228 if (!hfs_brec_find(&fd))
229 hfs_brec_remove(&fd);
235 int hfsplus_delete_cat(u32 cnid, struct inode *dir, struct qstr *str)
237 struct super_block *sb;
238 struct hfs_find_data fd;
239 struct hfsplus_fork_raw fork;
240 struct list_head *pos;
244 dprint(DBG_CAT_MOD, "delete_cat: %s,%u\n", str ? str->name : NULL, cnid);
246 hfs_find_init(HFSPLUS_SB(sb).cat_tree, &fd);
251 hfsplus_cat_build_key(sb, fd.search_key, cnid, NULL);
252 err = hfs_brec_find(&fd);
256 off = fd.entryoffset + offsetof(struct hfsplus_cat_thread, nodeName);
257 fd.search_key->cat.parent = cpu_to_be32(dir->i_ino);
258 hfs_bnode_read(fd.bnode, &fd.search_key->cat.name.length, off, 2);
259 len = be16_to_cpu(fd.search_key->cat.name.length) * 2;
260 hfs_bnode_read(fd.bnode, &fd.search_key->cat.name.unicode, off + 2, len);
261 fd.search_key->key_len = cpu_to_be16(6 + len);
263 hfsplus_cat_build_key(sb, fd.search_key, dir->i_ino, str);
265 err = hfs_brec_find(&fd);
269 type = hfs_bnode_read_u16(fd.bnode, fd.entryoffset);
270 if (type == HFSPLUS_FILE) {
272 off = fd.entryoffset + offsetof(hfsplus_cat_file, data_fork);
273 hfs_bnode_read(fd.bnode, &fork, off, sizeof(fork));
274 hfsplus_free_fork(sb, cnid, &fork, HFSPLUS_TYPE_DATA);
277 off = fd.entryoffset + offsetof(struct hfsplus_cat_file, rsrc_fork);
278 hfs_bnode_read(fd.bnode, &fork, off, sizeof(fork));
279 hfsplus_free_fork(sb, cnid, &fork, HFSPLUS_TYPE_RSRC);
282 list_for_each(pos, &HFSPLUS_I(dir).open_dir_list) {
283 struct hfsplus_readdir_data *rd =
284 list_entry(pos, struct hfsplus_readdir_data, list);
285 if (fd.tree->keycmp(fd.search_key, (void *)&rd->key) < 0)
289 err = hfs_brec_remove(&fd);
293 hfsplus_cat_build_key(sb, fd.search_key, cnid, NULL);
294 err = hfs_brec_find(&fd);
298 err = hfs_brec_remove(&fd);
303 dir->i_mtime = dir->i_ctime = CURRENT_TIME_SEC;
304 mark_inode_dirty(dir);
311 int hfsplus_rename_cat(u32 cnid,
312 struct inode *src_dir, struct qstr *src_name,
313 struct inode *dst_dir, struct qstr *dst_name)
315 struct super_block *sb;
316 struct hfs_find_data src_fd, dst_fd;
317 hfsplus_cat_entry entry;
318 int entry_size, type;
321 dprint(DBG_CAT_MOD, "rename_cat: %u - %lu,%s - %lu,%s\n", cnid, src_dir->i_ino, src_name->name,
322 dst_dir->i_ino, dst_name->name);
324 hfs_find_init(HFSPLUS_SB(sb).cat_tree, &src_fd);
327 /* find the old dir entry and read the data */
328 hfsplus_cat_build_key(sb, src_fd.search_key, src_dir->i_ino, src_name);
329 err = hfs_brec_find(&src_fd);
333 hfs_bnode_read(src_fd.bnode, &entry, src_fd.entryoffset,
336 /* create new dir entry with the data from the old entry */
337 hfsplus_cat_build_key(sb, dst_fd.search_key, dst_dir->i_ino, dst_name);
338 err = hfs_brec_find(&dst_fd);
339 if (err != -ENOENT) {
345 err = hfs_brec_insert(&dst_fd, &entry, src_fd.entrylength);
349 dst_dir->i_mtime = dst_dir->i_ctime = CURRENT_TIME_SEC;
350 mark_inode_dirty(dst_dir);
352 /* finally remove the old entry */
353 hfsplus_cat_build_key(sb, src_fd.search_key, src_dir->i_ino, src_name);
354 err = hfs_brec_find(&src_fd);
357 err = hfs_brec_remove(&src_fd);
361 src_dir->i_mtime = src_dir->i_ctime = CURRENT_TIME_SEC;
362 mark_inode_dirty(src_dir);
364 /* remove old thread entry */
365 hfsplus_cat_build_key(sb, src_fd.search_key, cnid, NULL);
366 err = hfs_brec_find(&src_fd);
369 type = hfs_bnode_read_u16(src_fd.bnode, src_fd.entryoffset);
370 err = hfs_brec_remove(&src_fd);
374 /* create new thread entry */
375 hfsplus_cat_build_key(sb, dst_fd.search_key, cnid, NULL);
376 entry_size = hfsplus_fill_cat_thread(sb, &entry, type, dst_dir->i_ino, dst_name);
377 err = hfs_brec_find(&dst_fd);
378 if (err != -ENOENT) {
383 err = hfs_brec_insert(&dst_fd, &entry, entry_size);
385 hfs_bnode_put(dst_fd.bnode);
386 hfs_find_exit(&src_fd);