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 struct hfsplus_sb_info *sbi = HFSPLUS_SB(inode->i_sb);
91 if (S_ISDIR(inode->i_mode)) {
92 struct hfsplus_cat_folder *folder;
94 folder = &entry->folder;
95 memset(folder, 0, sizeof(*folder));
96 folder->type = cpu_to_be16(HFSPLUS_FOLDER);
97 folder->id = cpu_to_be32(inode->i_ino);
98 HFSPLUS_I(inode)->create_date =
100 folder->content_mod_date =
101 folder->attribute_mod_date =
102 folder->access_date = hfsp_now2mt();
103 hfsplus_set_perms(inode, &folder->permissions);
104 if (inode == sbi->hidden_dir)
105 /* invisible and namelocked */
106 folder->user_info.frFlags = cpu_to_be16(0x5000);
107 return sizeof(*folder);
109 struct hfsplus_cat_file *file;
112 memset(file, 0, sizeof(*file));
113 file->type = cpu_to_be16(HFSPLUS_FILE);
114 file->flags = cpu_to_be16(HFSPLUS_FILE_THREAD_EXISTS);
115 file->id = cpu_to_be32(cnid);
116 HFSPLUS_I(inode)->create_date =
118 file->content_mod_date =
119 file->attribute_mod_date =
120 file->access_date = hfsp_now2mt();
121 if (cnid == inode->i_ino) {
122 hfsplus_set_perms(inode, &file->permissions);
123 if (S_ISLNK(inode->i_mode)) {
124 file->user_info.fdType = cpu_to_be32(HFSP_SYMLINK_TYPE);
125 file->user_info.fdCreator = cpu_to_be32(HFSP_SYMLINK_CREATOR);
127 file->user_info.fdType = cpu_to_be32(sbi->type);
128 file->user_info.fdCreator = cpu_to_be32(sbi->creator);
130 if ((file->permissions.rootflags | file->permissions.userflags) & HFSPLUS_FLG_IMMUTABLE)
131 file->flags |= cpu_to_be16(HFSPLUS_FILE_LOCKED);
133 file->user_info.fdType = cpu_to_be32(HFSP_HARDLINK_TYPE);
134 file->user_info.fdCreator = cpu_to_be32(HFSP_HFSPLUS_CREATOR);
135 file->user_info.fdFlags = cpu_to_be16(0x100);
136 file->create_date = HFSPLUS_I(sbi->hidden_dir)->create_date;
137 file->permissions.dev = cpu_to_be32(HFSPLUS_I(inode)->dev);
139 return sizeof(*file);
143 static int hfsplus_fill_cat_thread(struct super_block *sb,
144 hfsplus_cat_entry *entry, int type,
145 u32 parentid, struct qstr *str)
147 entry->type = cpu_to_be16(type);
148 entry->thread.reserved = 0;
149 entry->thread.parentID = cpu_to_be32(parentid);
150 hfsplus_asc2uni(sb, &entry->thread.nodeName, str->name, str->len);
151 return 10 + be16_to_cpu(entry->thread.nodeName.length) * 2;
154 /* Try to get a catalog entry for given catalog id */
155 int hfsplus_find_cat(struct super_block *sb, u32 cnid,
156 struct hfs_find_data *fd)
158 hfsplus_cat_entry tmp;
162 hfsplus_cat_build_key(sb, fd->search_key, cnid, NULL);
163 err = hfs_brec_read(fd, &tmp, sizeof(hfsplus_cat_entry));
167 type = be16_to_cpu(tmp.type);
168 if (type != HFSPLUS_FOLDER_THREAD && type != HFSPLUS_FILE_THREAD) {
169 printk(KERN_ERR "hfs: found bad thread record in catalog\n");
173 if (be16_to_cpu(tmp.thread.nodeName.length) > 255) {
174 printk(KERN_ERR "hfs: catalog name length corrupted\n");
178 hfsplus_cat_build_key_uni(fd->search_key, be32_to_cpu(tmp.thread.parentID),
179 &tmp.thread.nodeName);
180 return hfs_brec_find(fd);
183 int hfsplus_create_cat(u32 cnid, struct inode *dir, struct qstr *str, struct inode *inode)
185 struct super_block *sb = dir->i_sb;
186 struct hfs_find_data fd;
187 hfsplus_cat_entry entry;
191 dprint(DBG_CAT_MOD, "create_cat: %s,%u(%d)\n", str->name, cnid, inode->i_nlink);
192 hfs_find_init(HFSPLUS_SB(sb)->cat_tree, &fd);
194 hfsplus_cat_build_key(sb, fd.search_key, cnid, NULL);
195 entry_size = hfsplus_fill_cat_thread(sb, &entry, S_ISDIR(inode->i_mode) ?
196 HFSPLUS_FOLDER_THREAD : HFSPLUS_FILE_THREAD,
198 err = hfs_brec_find(&fd);
199 if (err != -ENOENT) {
204 err = hfs_brec_insert(&fd, &entry, entry_size);
208 hfsplus_cat_build_key(sb, fd.search_key, dir->i_ino, str);
209 entry_size = hfsplus_cat_build_record(&entry, cnid, inode);
210 err = hfs_brec_find(&fd);
211 if (err != -ENOENT) {
217 err = hfs_brec_insert(&fd, &entry, entry_size);
222 dir->i_mtime = dir->i_ctime = CURRENT_TIME_SEC;
223 mark_inode_dirty(dir);
228 hfsplus_cat_build_key(sb, fd.search_key, cnid, NULL);
229 if (!hfs_brec_find(&fd))
230 hfs_brec_remove(&fd);
236 int hfsplus_delete_cat(u32 cnid, struct inode *dir, struct qstr *str)
238 struct super_block *sb = dir->i_sb;
239 struct hfs_find_data fd;
240 struct hfsplus_fork_raw fork;
241 struct list_head *pos;
245 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 = src_dir->i_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);
323 hfs_find_init(HFSPLUS_SB(sb)->cat_tree, &src_fd);
326 /* find the old dir entry and read the data */
327 hfsplus_cat_build_key(sb, src_fd.search_key, src_dir->i_ino, src_name);
328 err = hfs_brec_find(&src_fd);
332 hfs_bnode_read(src_fd.bnode, &entry, src_fd.entryoffset,
335 /* create new dir entry with the data from the old entry */
336 hfsplus_cat_build_key(sb, dst_fd.search_key, dst_dir->i_ino, dst_name);
337 err = hfs_brec_find(&dst_fd);
338 if (err != -ENOENT) {
344 err = hfs_brec_insert(&dst_fd, &entry, src_fd.entrylength);
348 dst_dir->i_mtime = dst_dir->i_ctime = CURRENT_TIME_SEC;
349 mark_inode_dirty(dst_dir);
351 /* finally remove the old entry */
352 hfsplus_cat_build_key(sb, src_fd.search_key, src_dir->i_ino, src_name);
353 err = hfs_brec_find(&src_fd);
356 err = hfs_brec_remove(&src_fd);
360 src_dir->i_mtime = src_dir->i_ctime = CURRENT_TIME_SEC;
361 mark_inode_dirty(src_dir);
363 /* remove old thread entry */
364 hfsplus_cat_build_key(sb, src_fd.search_key, cnid, NULL);
365 err = hfs_brec_find(&src_fd);
368 type = hfs_bnode_read_u16(src_fd.bnode, src_fd.entryoffset);
369 err = hfs_brec_remove(&src_fd);
373 /* create new thread entry */
374 hfsplus_cat_build_key(sb, dst_fd.search_key, cnid, NULL);
375 entry_size = hfsplus_fill_cat_thread(sb, &entry, type, dst_dir->i_ino, dst_name);
376 err = hfs_brec_find(&dst_fd);
377 if (err != -ENOENT) {
382 err = hfs_brec_insert(&dst_fd, &entry, entry_size);
384 hfs_bnode_put(dst_fd.bnode);
385 hfs_find_exit(&src_fd);