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11#include <linux/sched.h>
12
13#include "hfsplus_fs.h"
14#include "hfsplus_raw.h"
15
16int hfsplus_cmp_cat_key(hfsplus_btree_key *k1, hfsplus_btree_key *k2)
17{
18 u32 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_unistrcmp(&k1->cat.name, &k2->cat.name);
26}
27
28void hfsplus_fill_cat_key(hfsplus_btree_key *key, u32 parent,
29 struct qstr *str)
30{
31 int len;
32
33 key->cat.parent = cpu_to_be32(parent);
34 if (str) {
35 hfsplus_asc2uni(&key->cat.name, str->name, str->len);
36 len = be16_to_cpu(key->cat.name.length);
37 } else
38 len = key->cat.name.length = 0;
39 key->key_len = cpu_to_be16(6 + 2 * len);
40}
41
42static void hfsplus_fill_cat_key_uni(hfsplus_btree_key *key, u32 parent,
43 hfsplus_unistr *name)
44{
45 int ustrlen;
46
47 ustrlen = be16_to_cpu(name->length);
48 key->cat.parent = cpu_to_be32(parent);
49 key->cat.name.length = cpu_to_be16(ustrlen);
50 ustrlen *= 2;
51 memcpy(key->cat.name.unicode, name->unicode, ustrlen);
52 key->key_len = cpu_to_be16(6 + ustrlen);
53}
54
55static void hfsplus_set_perms(struct inode *inode, hfsplus_perm *perms)
56{
57 perms->mode = cpu_to_be32(inode->i_mode);
58 perms->owner = cpu_to_be32(inode->i_uid);
59 perms->group = cpu_to_be32(inode->i_gid);
60}
61
62static int hfsplus_fill_cat_entry(hfsplus_cat_entry *entry, u32 cnid, struct inode *inode)
63{
64 if (S_ISDIR(inode->i_mode)) {
65 hfsplus_cat_folder *folder;
66
67 folder = &entry->folder;
68 memset(folder, 0, sizeof(*folder));
69 folder->type = cpu_to_be16(HFSPLUS_FOLDER);
70 folder->id = cpu_to_be32(inode->i_ino);
71 folder->create_date = folder->content_mod_date =
72 folder->attribute_mod_date = folder->access_date =
73 hfsp_now2mt();
74 hfsplus_set_perms(inode, &folder->permissions);
75 if (inode == HFSPLUS_SB(inode->i_sb).hidden_dir)
76
77 folder->user_info.frFlags = cpu_to_be16(0x5000);
78 return sizeof(*folder);
79 } else {
80 hfsplus_cat_file *file;
81
82 file = &entry->file;
83 memset(file, 0, sizeof(*file));
84 file->type = cpu_to_be16(HFSPLUS_FILE);
85 file->id = cpu_to_be32(cnid);
86 file->create_date = file->content_mod_date =
87 file->attribute_mod_date = file->access_date =
88 hfsp_now2mt();
89 if (cnid == inode->i_ino) {
90 hfsplus_set_perms(inode, &file->permissions);
91 file->user_info.fdType = cpu_to_be32(HFSPLUS_SB(inode->i_sb).type);
92 file->user_info.fdCreator = cpu_to_be32(HFSPLUS_SB(inode->i_sb).creator);
93 } else {
94 file->user_info.fdType = cpu_to_be32(HFSP_HARDLINK_TYPE);
95 file->user_info.fdCreator = cpu_to_be32(HFSP_HFSPLUS_CREATOR);
96 file->user_info.fdFlags = cpu_to_be16(0x100);
97 file->permissions.dev = cpu_to_be32(HFSPLUS_I(inode).dev);
98 }
99 return sizeof(*file);
100 }
101}
102
103static int hfsplus_fill_cat_thread(hfsplus_cat_entry *entry, int type,
104 u32 parentid, struct qstr *str)
105{
106 entry->type = cpu_to_be16(type);
107 entry->thread.reserved = 0;
108 entry->thread.parentID = cpu_to_be32(parentid);
109 hfsplus_asc2uni(&entry->thread.nodeName, str->name, str->len);
110 return 10 + be16_to_cpu(entry->thread.nodeName.length) * 2;
111}
112
113
114int hfsplus_find_cat(struct super_block *sb, unsigned long cnid,
115 struct hfsplus_find_data *fd)
116{
117 hfsplus_cat_entry tmp;
118 int err;
119 u16 type;
120
121 hfsplus_fill_cat_key(fd->search_key, cnid, NULL);
122 err = hfsplus_btree_find_entry(fd, &tmp, sizeof(hfsplus_cat_entry));
123 if (err)
124 return err;
125
126 type = be16_to_cpu(tmp.type);
127 if (type != HFSPLUS_FOLDER_THREAD && type != HFSPLUS_FILE_THREAD) {
128 printk("HFS+-fs: Found bad thread record in catalog\n");
129 return -EIO;
130 }
131
132 hfsplus_fill_cat_key_uni(fd->search_key, be32_to_cpu(tmp.thread.parentID),
133 &tmp.thread.nodeName);
134 return hfsplus_btree_find(fd);
135}
136
137int hfsplus_create_cat(u32 cnid, struct inode *dir, struct qstr *str, struct inode *inode)
138{
139 struct hfsplus_find_data fd;
140 struct super_block *sb;
141 hfsplus_cat_entry entry;
142 int entry_size;
143 int err;
144
145 dprint(DBG_CAT_MOD, "create_cat: %s,%u(%d)\n", str->name, cnid, inode->i_nlink);
146 sb = dir->i_sb;
147 hfsplus_find_init(HFSPLUS_SB(sb).cat_tree, &fd);
148
149 hfsplus_fill_cat_key(fd.search_key, cnid, NULL);
150 entry_size = hfsplus_fill_cat_thread(&entry, S_ISDIR(inode->i_mode) ?
151 HFSPLUS_FOLDER_THREAD : HFSPLUS_FILE_THREAD,
152 dir->i_ino, str);
153 err = hfsplus_btree_find(&fd);
154 if (err != -ENOENT) {
155 if (!err)
156 err = -EEXIST;
157 goto out;
158 }
159 err = hfsplus_bnode_insert_rec(&fd, &entry, entry_size);
160 if (err)
161 goto out;
162
163 hfsplus_fill_cat_key(fd.search_key, dir->i_ino, str);
164 entry_size = hfsplus_fill_cat_entry(&entry, cnid, inode);
165 err = hfsplus_btree_find(&fd);
166 if (err != -ENOENT) {
167
168 if (!err)
169 err = -EEXIST;
170 goto out;
171 }
172 err = hfsplus_bnode_insert_rec(&fd, &entry, entry_size);
173 if (!err) {
174 dir->i_size++;
175 mark_inode_dirty(dir);
176 }
177out:
178 hfsplus_find_exit(&fd);
179
180 return err;
181}
182
183int hfsplus_delete_cat(u32 cnid, struct inode *dir, struct qstr *str)
184{
185 struct super_block *sb;
186 struct hfsplus_find_data fd;
187 hfsplus_fork_raw fork;
188 struct list_head *pos;
189 int err, off;
190 u16 type;
191
192 dprint(DBG_CAT_MOD, "delete_cat: %s,%u\n", str ? str->name : NULL, cnid);
193 sb = dir->i_sb;
194 hfsplus_find_init(HFSPLUS_SB(sb).cat_tree, &fd);
195
196 if (!str) {
197 int len;
198
199 hfsplus_fill_cat_key(fd.search_key, cnid, NULL);
200 err = hfsplus_btree_find(&fd);
201 if (err)
202 goto out;
203
204 off = fd.entryoffset + offsetof(hfsplus_cat_thread, nodeName);
205 fd.search_key->cat.parent = cpu_to_be32(dir->i_ino);
206 hfsplus_bnode_readbytes(fd.bnode, &fd.search_key->cat.name.length, off, 2);
207 len = be16_to_cpu(fd.search_key->cat.name.length) * 2;
208 hfsplus_bnode_readbytes(fd.bnode, &fd.search_key->cat.name.unicode, off + 2, len);
209 fd.search_key->key_len = cpu_to_be16(6 + len);
210 } else
211 hfsplus_fill_cat_key(fd.search_key, dir->i_ino, str);
212
213 err = hfsplus_btree_find(&fd);
214 if (err)
215 goto out;
216
217 type = hfsplus_bnode_read_u16(fd.bnode, fd.entryoffset);
218 if (type == HFSPLUS_FILE) {
219#if 0
220 off = fd.entryoffset + offsetof(hfsplus_cat_file, data_fork);
221 hfsplus_bnode_readbytes(fd.bnode, &fork, off, sizeof(fork));
222 hfsplus_free_fork(sb, cnid, &fork, HFSPLUS_TYPE_DATA);
223#endif
224
225 off = fd.entryoffset + offsetof(hfsplus_cat_file, rsrc_fork);
226 hfsplus_bnode_readbytes(fd.bnode, &fork, off, sizeof(fork));
227 hfsplus_free_fork(sb, cnid, &fork, HFSPLUS_TYPE_RSRC);
228 }
229
230 list_for_each(pos, &HFSPLUS_I(dir).open_dir_list) {
231 struct hfsplus_readdir_data *rd =
232 list_entry(pos, struct hfsplus_readdir_data, list);
233 if (fd.tree->keycmp(fd.search_key, (void *)&rd->key) < 0)
234 rd->file->f_pos--;
235 }
236
237 err = hfsplus_bnode_remove_rec(&fd);
238 if (err)
239 goto out;
240
241 hfsplus_fill_cat_key(fd.search_key, cnid, NULL);
242 err = hfsplus_btree_find(&fd);
243 if (err)
244 goto out;
245
246 err = hfsplus_bnode_remove_rec(&fd);
247 if (err)
248 goto out;
249
250 dir->i_size--;
251 mark_inode_dirty(dir);
252out:
253 hfsplus_find_exit(&fd);
254
255 return err;
256}
257
258int hfsplus_rename_cat(u32 cnid,
259 struct inode *src_dir, struct qstr *src_name,
260 struct inode *dst_dir, struct qstr *dst_name)
261{
262 struct super_block *sb;
263 struct hfsplus_find_data src_fd, dst_fd;
264 hfsplus_cat_entry entry;
265 int entry_size, type;
266 int err = 0;
267
268 dprint(DBG_CAT_MOD, "rename_cat: %u - %lu,%s - %lu,%s\n", cnid, src_dir->i_ino, src_name->name,
269 dst_dir->i_ino, dst_name->name);
270 sb = src_dir->i_sb;
271 hfsplus_find_init(HFSPLUS_SB(sb).cat_tree, &src_fd);
272 dst_fd = src_fd;
273
274
275 hfsplus_fill_cat_key(src_fd.search_key, src_dir->i_ino, src_name);
276 err = hfsplus_btree_find(&src_fd);
277 if (err)
278 goto out;
279
280 hfsplus_bnode_readbytes(src_fd.bnode, &entry, src_fd.entryoffset,
281 src_fd.entrylength);
282
283
284 hfsplus_fill_cat_key(dst_fd.search_key, dst_dir->i_ino, dst_name);
285 err = hfsplus_btree_find(&dst_fd);
286 if (err != -ENOENT) {
287 if (!err)
288 err = -EEXIST;
289 goto out;
290 }
291
292 err = hfsplus_bnode_insert_rec(&dst_fd, &entry, src_fd.entrylength);
293 if (err)
294 goto out;
295 dst_dir->i_size++;
296 mark_inode_dirty(dst_dir);
297
298
299 hfsplus_fill_cat_key(src_fd.search_key, src_dir->i_ino, src_name);
300 err = hfsplus_btree_find(&src_fd);
301 if (err)
302 goto out;
303 err = hfsplus_bnode_remove_rec(&src_fd);
304 if (err)
305 goto out;
306 src_dir->i_size--;
307 mark_inode_dirty(src_dir);
308
309
310 hfsplus_fill_cat_key(src_fd.search_key, cnid, NULL);
311 err = hfsplus_btree_find(&src_fd);
312 if (err)
313 goto out;
314 type = hfsplus_bnode_read_u16(src_fd.bnode, src_fd.entryoffset);
315 err = hfsplus_bnode_remove_rec(&src_fd);
316 if (err)
317 goto out;
318
319
320 hfsplus_fill_cat_key(dst_fd.search_key, cnid, NULL);
321 entry_size = hfsplus_fill_cat_thread(&entry, type, dst_dir->i_ino, dst_name);
322 err = hfsplus_btree_find(&dst_fd);
323 if (err != -ENOENT) {
324 if (!err)
325 err = -EEXIST;
326 goto out;
327 }
328 err = hfsplus_bnode_insert_rec(&dst_fd, &entry, entry_size);
329out:
330 hfsplus_put_bnode(dst_fd.bnode);
331 hfsplus_find_exit(&src_fd);
332 return err;
333}
334
