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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
70void hfsplus_cat_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
81 perms->userflags = HFSPLUS_I(inode)->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 if (S_ISREG(inode->i_mode))
87 perms->dev = cpu_to_be32(inode->i_nlink);
88 else if (S_ISBLK(inode->i_mode) || S_ISCHR(inode->i_mode))
89 perms->dev = cpu_to_be32(inode->i_rdev);
90 else
91 perms->dev = 0;
92}
93
94static int hfsplus_cat_build_record(hfsplus_cat_entry *entry,
95 u32 cnid, struct inode *inode)
96{
97 struct hfsplus_sb_info *sbi = HFSPLUS_SB(inode->i_sb);
98
99 if (S_ISDIR(inode->i_mode)) {
100 struct hfsplus_cat_folder *folder;
101
102 folder = &entry->folder;
103 memset(folder, 0, sizeof(*folder));
104 folder->type = cpu_to_be16(HFSPLUS_FOLDER);
105 folder->id = cpu_to_be32(inode->i_ino);
106 HFSPLUS_I(inode)->create_date =
107 folder->create_date =
108 folder->content_mod_date =
109 folder->attribute_mod_date =
110 folder->access_date = hfsp_now2mt();
111 hfsplus_cat_set_perms(inode, &folder->permissions);
112 if (inode == sbi->hidden_dir)
113
114 folder->user_info.frFlags = cpu_to_be16(0x5000);
115 return sizeof(*folder);
116 } else {
117 struct hfsplus_cat_file *file;
118
119 file = &entry->file;
120 memset(file, 0, sizeof(*file));
121 file->type = cpu_to_be16(HFSPLUS_FILE);
122 file->flags = cpu_to_be16(HFSPLUS_FILE_THREAD_EXISTS);
123 file->id = cpu_to_be32(cnid);
124 HFSPLUS_I(inode)->create_date =
125 file->create_date =
126 file->content_mod_date =
127 file->attribute_mod_date =
128 file->access_date = hfsp_now2mt();
129 if (cnid == inode->i_ino) {
130 hfsplus_cat_set_perms(inode, &file->permissions);
131 if (S_ISLNK(inode->i_mode)) {
132 file->user_info.fdType =
133 cpu_to_be32(HFSP_SYMLINK_TYPE);
134 file->user_info.fdCreator =
135 cpu_to_be32(HFSP_SYMLINK_CREATOR);
136 } else {
137 file->user_info.fdType =
138 cpu_to_be32(sbi->type);
139 file->user_info.fdCreator =
140 cpu_to_be32(sbi->creator);
141 }
142 if (HFSPLUS_FLG_IMMUTABLE &
143 (file->permissions.rootflags |
144 file->permissions.userflags))
145 file->flags |=
146 cpu_to_be16(HFSPLUS_FILE_LOCKED);
147 } else {
148 file->user_info.fdType =
149 cpu_to_be32(HFSP_HARDLINK_TYPE);
150 file->user_info.fdCreator =
151 cpu_to_be32(HFSP_HFSPLUS_CREATOR);
152 file->user_info.fdFlags =
153 cpu_to_be16(0x100);
154 file->create_date =
155 HFSPLUS_I(sbi->hidden_dir)->create_date;
156 file->permissions.dev =
157 cpu_to_be32(HFSPLUS_I(inode)->linkid);
158 }
159 return sizeof(*file);
160 }
161}
162
163static int hfsplus_fill_cat_thread(struct super_block *sb,
164 hfsplus_cat_entry *entry, int type,
165 u32 parentid, struct qstr *str)
166{
167 entry->type = cpu_to_be16(type);
168 entry->thread.reserved = 0;
169 entry->thread.parentID = cpu_to_be32(parentid);
170 hfsplus_asc2uni(sb, &entry->thread.nodeName, str->name, str->len);
171 return 10 + be16_to_cpu(entry->thread.nodeName.length) * 2;
172}
173
174
175int hfsplus_find_cat(struct super_block *sb, u32 cnid,
176 struct hfs_find_data *fd)
177{
178 hfsplus_cat_entry tmp;
179 int err;
180 u16 type;
181
182 hfsplus_cat_build_key(sb, fd->search_key, cnid, NULL);
183 err = hfs_brec_read(fd, &tmp, sizeof(hfsplus_cat_entry));
184 if (err)
185 return err;
186
187 type = be16_to_cpu(tmp.type);
188 if (type != HFSPLUS_FOLDER_THREAD && type != HFSPLUS_FILE_THREAD) {
189 printk(KERN_ERR "hfs: found bad thread record in catalog\n");
190 return -EIO;
191 }
192
193 if (be16_to_cpu(tmp.thread.nodeName.length) > 255) {
194 printk(KERN_ERR "hfs: catalog name length corrupted\n");
195 return -EIO;
196 }
197
198 hfsplus_cat_build_key_uni(fd->search_key,
199 be32_to_cpu(tmp.thread.parentID),
200 &tmp.thread.nodeName);
201 return hfs_brec_find(fd);
202}
203
204int hfsplus_create_cat(u32 cnid, struct inode *dir,
205 struct qstr *str, struct inode *inode)
206{
207 struct super_block *sb = dir->i_sb;
208 struct hfs_find_data fd;
209 hfsplus_cat_entry entry;
210 int entry_size;
211 int err;
212
213 dprint(DBG_CAT_MOD, "create_cat: %s,%u(%d)\n",
214 str->name, cnid, inode->i_nlink);
215 hfs_find_init(HFSPLUS_SB(sb)->cat_tree, &fd);
216
217 hfsplus_cat_build_key(sb, fd.search_key, cnid, NULL);
218 entry_size = hfsplus_fill_cat_thread(sb, &entry,
219 S_ISDIR(inode->i_mode) ?
220 HFSPLUS_FOLDER_THREAD : HFSPLUS_FILE_THREAD,
221 dir->i_ino, str);
222 err = hfs_brec_find(&fd);
223 if (err != -ENOENT) {
224 if (!err)
225 err = -EEXIST;
226 goto err2;
227 }
228 err = hfs_brec_insert(&fd, &entry, entry_size);
229 if (err)
230 goto err2;
231
232 hfsplus_cat_build_key(sb, fd.search_key, dir->i_ino, str);
233 entry_size = hfsplus_cat_build_record(&entry, cnid, inode);
234 err = hfs_brec_find(&fd);
235 if (err != -ENOENT) {
236
237 if (!err)
238 err = -EEXIST;
239 goto err1;
240 }
241 err = hfs_brec_insert(&fd, &entry, entry_size);
242 if (err)
243 goto err1;
244
245 dir->i_size++;
246 dir->i_mtime = dir->i_ctime = CURRENT_TIME_SEC;
247 hfsplus_mark_inode_dirty(dir, HFSPLUS_I_CAT_DIRTY);
248
249 hfs_find_exit(&fd);
250 return 0;
251
252err1:
253 hfsplus_cat_build_key(sb, fd.search_key, cnid, NULL);
254 if (!hfs_brec_find(&fd))
255 hfs_brec_remove(&fd);
256err2:
257 hfs_find_exit(&fd);
258 return err;
259}
260
261int hfsplus_delete_cat(u32 cnid, struct inode *dir, struct qstr *str)
262{
263 struct super_block *sb = dir->i_sb;
264 struct hfs_find_data fd;
265 struct hfsplus_fork_raw fork;
266 struct list_head *pos;
267 int err, off;
268 u16 type;
269
270 dprint(DBG_CAT_MOD, "delete_cat: %s,%u\n",
271 str ? str->name : NULL, cnid);
272 hfs_find_init(HFSPLUS_SB(sb)->cat_tree, &fd);
273
274 if (!str) {
275 int len;
276
277 hfsplus_cat_build_key(sb, fd.search_key, cnid, NULL);
278 err = hfs_brec_find(&fd);
279 if (err)
280 goto out;
281
282 off = fd.entryoffset +
283 offsetof(struct hfsplus_cat_thread, nodeName);
284 fd.search_key->cat.parent = cpu_to_be32(dir->i_ino);
285 hfs_bnode_read(fd.bnode,
286 &fd.search_key->cat.name.length, off, 2);
287 len = be16_to_cpu(fd.search_key->cat.name.length) * 2;
288 hfs_bnode_read(fd.bnode,
289 &fd.search_key->cat.name.unicode,
290 off + 2, len);
291 fd.search_key->key_len = cpu_to_be16(6 + len);
292 } else
293 hfsplus_cat_build_key(sb, fd.search_key, dir->i_ino, str);
294
295 err = hfs_brec_find(&fd);
296 if (err)
297 goto out;
298
299 type = hfs_bnode_read_u16(fd.bnode, fd.entryoffset);
300 if (type == HFSPLUS_FILE) {
301#if 0
302 off = fd.entryoffset + offsetof(hfsplus_cat_file, data_fork);
303 hfs_bnode_read(fd.bnode, &fork, off, sizeof(fork));
304 hfsplus_free_fork(sb, cnid, &fork, HFSPLUS_TYPE_DATA);
305#endif
306
307 off = fd.entryoffset +
308 offsetof(struct hfsplus_cat_file, rsrc_fork);
309 hfs_bnode_read(fd.bnode, &fork, off, sizeof(fork));
310 hfsplus_free_fork(sb, cnid, &fork, HFSPLUS_TYPE_RSRC);
311 }
312
313 list_for_each(pos, &HFSPLUS_I(dir)->open_dir_list) {
314 struct hfsplus_readdir_data *rd =
315 list_entry(pos, struct hfsplus_readdir_data, list);
316 if (fd.tree->keycmp(fd.search_key, (void *)&rd->key) < 0)
317 rd->file->f_pos--;
318 }
319
320 err = hfs_brec_remove(&fd);
321 if (err)
322 goto out;
323
324 hfsplus_cat_build_key(sb, fd.search_key, cnid, NULL);
325 err = hfs_brec_find(&fd);
326 if (err)
327 goto out;
328
329 err = hfs_brec_remove(&fd);
330 if (err)
331 goto out;
332
333 dir->i_size--;
334 dir->i_mtime = dir->i_ctime = CURRENT_TIME_SEC;
335 hfsplus_mark_inode_dirty(dir, HFSPLUS_I_CAT_DIRTY);
336out:
337 hfs_find_exit(&fd);
338
339 return err;
340}
341
342int hfsplus_rename_cat(u32 cnid,
343 struct inode *src_dir, struct qstr *src_name,
344 struct inode *dst_dir, struct qstr *dst_name)
345{
346 struct super_block *sb = src_dir->i_sb;
347 struct hfs_find_data src_fd, dst_fd;
348 hfsplus_cat_entry entry;
349 int entry_size, type;
350 int err = 0;
351
352 dprint(DBG_CAT_MOD, "rename_cat: %u - %lu,%s - %lu,%s\n",
353 cnid, src_dir->i_ino, src_name->name,
354 dst_dir->i_ino, dst_name->name);
355 hfs_find_init(HFSPLUS_SB(sb)->cat_tree, &src_fd);
356 dst_fd = src_fd;
357
358
359 hfsplus_cat_build_key(sb, src_fd.search_key, src_dir->i_ino, src_name);
360 err = hfs_brec_find(&src_fd);
361 if (err)
362 goto out;
363
364 hfs_bnode_read(src_fd.bnode, &entry, src_fd.entryoffset,
365 src_fd.entrylength);
366
367
368 hfsplus_cat_build_key(sb, dst_fd.search_key, dst_dir->i_ino, dst_name);
369 err = hfs_brec_find(&dst_fd);
370 if (err != -ENOENT) {
371 if (!err)
372 err = -EEXIST;
373 goto out;
374 }
375
376 err = hfs_brec_insert(&dst_fd, &entry, src_fd.entrylength);
377 if (err)
378 goto out;
379 dst_dir->i_size++;
380 dst_dir->i_mtime = dst_dir->i_ctime = CURRENT_TIME_SEC;
381
382
383 hfsplus_cat_build_key(sb, src_fd.search_key, src_dir->i_ino, src_name);
384 err = hfs_brec_find(&src_fd);
385 if (err)
386 goto out;
387 err = hfs_brec_remove(&src_fd);
388 if (err)
389 goto out;
390 src_dir->i_size--;
391 src_dir->i_mtime = src_dir->i_ctime = CURRENT_TIME_SEC;
392
393
394 hfsplus_cat_build_key(sb, src_fd.search_key, cnid, NULL);
395 err = hfs_brec_find(&src_fd);
396 if (err)
397 goto out;
398 type = hfs_bnode_read_u16(src_fd.bnode, src_fd.entryoffset);
399 err = hfs_brec_remove(&src_fd);
400 if (err)
401 goto out;
402
403
404 hfsplus_cat_build_key(sb, dst_fd.search_key, cnid, NULL);
405 entry_size = hfsplus_fill_cat_thread(sb, &entry, type,
406 dst_dir->i_ino, dst_name);
407 err = hfs_brec_find(&dst_fd);
408 if (err != -ENOENT) {
409 if (!err)
410 err = -EEXIST;
411 goto out;
412 }
413 err = hfs_brec_insert(&dst_fd, &entry, entry_size);
414
415 hfsplus_mark_inode_dirty(dst_dir, HFSPLUS_I_CAT_DIRTY);
416 hfsplus_mark_inode_dirty(src_dir, HFSPLUS_I_CAT_DIRTY);
417out:
418 hfs_bnode_put(dst_fd.bnode);
419 hfs_find_exit(&src_fd);
420 return err;
421}
422
