1
2
3
4
5
6
7
8
9
10
11
12#include "hfsplus_fs.h"
13#include "hfsplus_raw.h"
14
15int hfsplus_cat_case_cmp_key(const hfsplus_btree_key *k1,
16 const hfsplus_btree_key *k2)
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
25 return hfsplus_strcasecmp(&k1->cat.name, &k2->cat.name);
26}
27
28int 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);
39}
40
41void 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) {
48 hfsplus_asc2uni(sb, &key->cat.name, str->name, str->len);
49 len = be16_to_cpu(key->cat.name.length);
50 } else {
51 key->cat.name.length = 0;
52 len = 0;
53 }
54 key->key_len = cpu_to_be16(6 + 2 * len);
55}
56
57static void hfsplus_cat_build_key_uni(hfsplus_btree_key *key, u32 parent,
58 struct hfsplus_unistr *name)
59{
60 int ustrlen;
61
62 ustrlen = be16_to_cpu(name->length);
63 key->cat.parent = cpu_to_be32(parent);
64 key->cat.name.length = cpu_to_be16(ustrlen);
65 ustrlen *= 2;
66 memcpy(key->cat.name.unicode, name->unicode, ustrlen);
67 key->key_len = cpu_to_be16(6 + ustrlen);
68}
69
70static void hfsplus_set_perms(struct inode *inode, struct hfsplus_perm *perms)
71{
72 if (inode->i_flags & S_IMMUTABLE)
73 perms->rootflags |= HFSPLUS_FLG_IMMUTABLE;
74 else
75 perms->rootflags &= ~HFSPLUS_FLG_IMMUTABLE;
76 if (inode->i_flags & S_APPEND)
77 perms->rootflags |= HFSPLUS_FLG_APPEND;
78 else
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);
85}
86
87static int hfsplus_cat_build_record(hfsplus_cat_entry *entry, u32 cnid, struct inode *inode)
88{
89 if (S_ISDIR(inode->i_mode)) {
90 struct hfsplus_cat_folder *folder;
91
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 =
97 folder->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
104 folder->user_info.frFlags = cpu_to_be16(0x5000);
105 return sizeof(*folder);
106 } else {
107 struct hfsplus_cat_file *file;
108
109 file = &entry->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 =
115 file->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);
124 } else {
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);
127 }
128 if ((file->permissions.rootflags | file->permissions.userflags) & HFSPLUS_FLG_IMMUTABLE)
129 file->flags |= cpu_to_be16(HFSPLUS_FILE_LOCKED);
130 } else {
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);
136 }
137 return sizeof(*file);
138 }
139}
140
141static int hfsplus_fill_cat_thread(struct super_block *sb,
142 hfsplus_cat_entry *entry, int type,
143 u32 parentid, struct qstr *str)
144{
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;
150}
151
152
153int hfsplus_find_cat(struct super_block *sb, u32 cnid,
154 struct hfs_find_data *fd)
155{
156 hfsplus_cat_entry tmp;
157 int err;
158 u16 type;
159
160 hfsplus_cat_build_key(sb, fd->search_key, cnid, NULL);
161 err = hfs_brec_read(fd, &tmp, sizeof(hfsplus_cat_entry));
162 if (err)
163 return err;
164
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");
168 return -EIO;
169 }
170
171 hfsplus_cat_build_key_uni(fd->search_key, be32_to_cpu(tmp.thread.parentID),
172 &tmp.thread.nodeName);
173 return hfs_brec_find(fd);
174}
175
176int hfsplus_create_cat(u32 cnid, struct inode *dir, struct qstr *str, struct inode *inode)
177{
178 struct hfs_find_data fd;
179 struct super_block *sb;
180 hfsplus_cat_entry entry;
181 int entry_size;
182 int err;
183
184 dprint(DBG_CAT_MOD, "create_cat: %s,%u(%d)\n", str->name, cnid, inode->i_nlink);
185 sb = dir->i_sb;
186 hfs_find_init(HFSPLUS_SB(sb).cat_tree, &fd);
187
188 hfsplus_cat_build_key(sb, fd.search_key, cnid, NULL);
189 entry_size = hfsplus_fill_cat_thread(sb, &entry, S_ISDIR(inode->i_mode) ?
190 HFSPLUS_FOLDER_THREAD : HFSPLUS_FILE_THREAD,
191 dir->i_ino, str);
192 err = hfs_brec_find(&fd);
193 if (err != -ENOENT) {
194 if (!err)
195 err = -EEXIST;
196 goto err2;
197 }
198 err = hfs_brec_insert(&fd, &entry, entry_size);
199 if (err)
200 goto err2;
201
202 hfsplus_cat_build_key(sb, fd.search_key, dir->i_ino, str);
203 entry_size = hfsplus_cat_build_record(&entry, cnid, inode);
204 err = hfs_brec_find(&fd);
205 if (err != -ENOENT) {
206
207 if (!err)
208 err = -EEXIST;
209 goto err1;
210 }
211 err = hfs_brec_insert(&fd, &entry, entry_size);
212 if (err)
213 goto err1;
214
215 dir->i_size++;
216 dir->i_mtime = dir->i_ctime = CURRENT_TIME_SEC;
217 mark_inode_dirty(dir);
218 hfs_find_exit(&fd);
219 return 0;
220
221err1:
222 hfsplus_cat_build_key(sb, fd.search_key, cnid, NULL);
223 if (!hfs_brec_find(&fd))
224 hfs_brec_remove(&fd);
225err2:
226 hfs_find_exit(&fd);
227 return err;
228}
229
230int hfsplus_delete_cat(u32 cnid, struct inode *dir, struct qstr *str)
231{
232 struct super_block *sb;
233 struct hfs_find_data fd;
234 struct hfsplus_fork_raw fork;
235 struct list_head *pos;
236 int err, off;
237 u16 type;
238
239 dprint(DBG_CAT_MOD, "delete_cat: %s,%u\n", str ? str->name : NULL, cnid);
240 sb = dir->i_sb;
241 hfs_find_init(HFSPLUS_SB(sb).cat_tree, &fd);
242
243 if (!str) {
244 int len;
245
246 hfsplus_cat_build_key(sb, fd.search_key, cnid, NULL);
247 err = hfs_brec_find(&fd);
248 if (err)
249 goto out;
250
251 off = fd.entryoffset + offsetof(struct hfsplus_cat_thread, nodeName);
252 fd.search_key->cat.parent = cpu_to_be32(dir->i_ino);
253 hfs_bnode_read(fd.bnode, &fd.search_key->cat.name.length, off, 2);
254 len = be16_to_cpu(fd.search_key->cat.name.length) * 2;
255 hfs_bnode_read(fd.bnode, &fd.search_key->cat.name.unicode, off + 2, len);
256 fd.search_key->key_len = cpu_to_be16(6 + len);
257 } else
258 hfsplus_cat_build_key(sb, fd.search_key, dir->i_ino, str);
259
260 err = hfs_brec_find(&fd);
261 if (err)
262 goto out;
263
264 type = hfs_bnode_read_u16(fd.bnode, fd.entryoffset);
265 if (type == HFSPLUS_FILE) {
266#if 0
267 off = fd.entryoffset + offsetof(hfsplus_cat_file, data_fork);
268 hfs_bnode_read(fd.bnode, &fork, off, sizeof(fork));
269 hfsplus_free_fork(sb, cnid, &fork, HFSPLUS_TYPE_DATA);
270#endif
271
272 off = fd.entryoffset + offsetof(struct hfsplus_cat_file, rsrc_fork);
273 hfs_bnode_read(fd.bnode, &fork, off, sizeof(fork));
274 hfsplus_free_fork(sb, cnid, &fork, HFSPLUS_TYPE_RSRC);
275 }
276
277 list_for_each(pos, &HFSPLUS_I(dir).open_dir_list) {
278 struct hfsplus_readdir_data *rd =
279 list_entry(pos, struct hfsplus_readdir_data, list);
280 if (fd.tree->keycmp(fd.search_key, (void *)&rd->key) < 0)
281 rd->file->f_pos--;
282 }
283
284 err = hfs_brec_remove(&fd);
285 if (err)
286 goto out;
287
288 hfsplus_cat_build_key(sb, fd.search_key, cnid, NULL);
289 err = hfs_brec_find(&fd);
290 if (err)
291 goto out;
292
293 err = hfs_brec_remove(&fd);
294 if (err)
295 goto out;
296
297 dir->i_size--;
298 dir->i_mtime = dir->i_ctime = CURRENT_TIME_SEC;
299 mark_inode_dirty(dir);
300out:
301 hfs_find_exit(&fd);
302
303 return err;
304}
305
306int hfsplus_rename_cat(u32 cnid,
307 struct inode *src_dir, struct qstr *src_name,
308 struct inode *dst_dir, struct qstr *dst_name)
309{
310 struct super_block *sb;
311 struct hfs_find_data src_fd, dst_fd;
312 hfsplus_cat_entry entry;
313 int entry_size, type;
314 int err = 0;
315
316 dprint(DBG_CAT_MOD, "rename_cat: %u - %lu,%s - %lu,%s\n", cnid, src_dir->i_ino, src_name->name,
317 dst_dir->i_ino, dst_name->name);
318 sb = src_dir->i_sb;
319 hfs_find_init(HFSPLUS_SB(sb).cat_tree, &src_fd);
320 dst_fd = src_fd;
321
322
323 hfsplus_cat_build_key(sb, src_fd.search_key, src_dir->i_ino, src_name);
324 err = hfs_brec_find(&src_fd);
325 if (err)
326 goto out;
327
328 hfs_bnode_read(src_fd.bnode, &entry, src_fd.entryoffset,
329 src_fd.entrylength);
330
331
332 hfsplus_cat_build_key(sb, dst_fd.search_key, dst_dir->i_ino, dst_name);
333 err = hfs_brec_find(&dst_fd);
334 if (err != -ENOENT) {
335 if (!err)
336 err = -EEXIST;
337 goto out;
338 }
339
340 err = hfs_brec_insert(&dst_fd, &entry, src_fd.entrylength);
341 if (err)
342 goto out;
343 dst_dir->i_size++;
344 dst_dir->i_mtime = dst_dir->i_ctime = CURRENT_TIME_SEC;
345 mark_inode_dirty(dst_dir);
346
347
348 hfsplus_cat_build_key(sb, src_fd.search_key, src_dir->i_ino, src_name);
349 err = hfs_brec_find(&src_fd);
350 if (err)
351 goto out;
352 err = hfs_brec_remove(&src_fd);
353 if (err)
354 goto out;
355 src_dir->i_size--;
356 src_dir->i_mtime = src_dir->i_ctime = CURRENT_TIME_SEC;
357 mark_inode_dirty(src_dir);
358
359
360 hfsplus_cat_build_key(sb, src_fd.search_key, cnid, NULL);
361 err = hfs_brec_find(&src_fd);
362 if (err)
363 goto out;
364 type = hfs_bnode_read_u16(src_fd.bnode, src_fd.entryoffset);
365 err = hfs_brec_remove(&src_fd);
366 if (err)
367 goto out;
368
369
370 hfsplus_cat_build_key(sb, dst_fd.search_key, cnid, NULL);
371 entry_size = hfsplus_fill_cat_thread(sb, &entry, type, dst_dir->i_ino, dst_name);
372 err = hfs_brec_find(&dst_fd);
373 if (err != -ENOENT) {
374 if (!err)
375 err = -EEXIST;
376 goto out;
377 }
378 err = hfs_brec_insert(&dst_fd, &entry, entry_size);
379out:
380 hfs_bnode_put(dst_fd.bnode);
381 hfs_find_exit(&src_fd);
382 return err;
383}
384
