Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * linux/fs/hfsplus/super.c | |
3 | * | |
4 | * Copyright (C) 2001 | |
5 | * Brad Boyer (flar@allandria.com) | |
6 | * (C) 2003 Ardis Technologies <roman@ardistech.com> | |
7 | * | |
8 | */ | |
9 | ||
10 | #include <linux/config.h> | |
11 | #include <linux/module.h> | |
12 | #include <linux/init.h> | |
13 | #include <linux/pagemap.h> | |
14 | #include <linux/fs.h> | |
15 | #include <linux/sched.h> | |
16 | #include <linux/slab.h> | |
1da177e4 LT |
17 | #include <linux/vfs.h> |
18 | #include <linux/nls.h> | |
19 | ||
20 | static struct inode *hfsplus_alloc_inode(struct super_block *sb); | |
21 | static void hfsplus_destroy_inode(struct inode *inode); | |
22 | ||
23 | #include "hfsplus_fs.h" | |
24 | ||
1da177e4 LT |
25 | static void hfsplus_read_inode(struct inode *inode) |
26 | { | |
27 | struct hfs_find_data fd; | |
28 | struct hfsplus_vh *vhdr; | |
29 | int err; | |
30 | ||
1da177e4 LT |
31 | INIT_LIST_HEAD(&HFSPLUS_I(inode).open_dir_list); |
32 | init_MUTEX(&HFSPLUS_I(inode).extents_lock); | |
33 | HFSPLUS_I(inode).flags = 0; | |
34 | HFSPLUS_I(inode).rsrc_inode = NULL; | |
94c1d318 | 35 | atomic_set(&HFSPLUS_I(inode).opencnt, 0); |
1da177e4 LT |
36 | |
37 | if (inode->i_ino >= HFSPLUS_FIRSTUSER_CNID) { | |
38 | read_inode: | |
39 | hfs_find_init(HFSPLUS_SB(inode->i_sb).cat_tree, &fd); | |
40 | err = hfsplus_find_cat(inode->i_sb, inode->i_ino, &fd); | |
41 | if (!err) | |
42 | err = hfsplus_cat_read_inode(inode, &fd); | |
43 | hfs_find_exit(&fd); | |
44 | if (err) | |
45 | goto bad_inode; | |
46 | return; | |
47 | } | |
48 | vhdr = HFSPLUS_SB(inode->i_sb).s_vhdr; | |
49 | switch(inode->i_ino) { | |
50 | case HFSPLUS_ROOT_CNID: | |
51 | goto read_inode; | |
52 | case HFSPLUS_EXT_CNID: | |
53 | hfsplus_inode_read_fork(inode, &vhdr->ext_file); | |
54 | inode->i_mapping->a_ops = &hfsplus_btree_aops; | |
55 | break; | |
56 | case HFSPLUS_CAT_CNID: | |
57 | hfsplus_inode_read_fork(inode, &vhdr->cat_file); | |
58 | inode->i_mapping->a_ops = &hfsplus_btree_aops; | |
59 | break; | |
60 | case HFSPLUS_ALLOC_CNID: | |
61 | hfsplus_inode_read_fork(inode, &vhdr->alloc_file); | |
62 | inode->i_mapping->a_ops = &hfsplus_aops; | |
63 | break; | |
64 | case HFSPLUS_START_CNID: | |
65 | hfsplus_inode_read_fork(inode, &vhdr->start_file); | |
66 | break; | |
67 | case HFSPLUS_ATTR_CNID: | |
68 | hfsplus_inode_read_fork(inode, &vhdr->attr_file); | |
69 | inode->i_mapping->a_ops = &hfsplus_btree_aops; | |
70 | break; | |
71 | default: | |
72 | goto bad_inode; | |
73 | } | |
74 | ||
75 | return; | |
76 | ||
77 | bad_inode: | |
78 | make_bad_inode(inode); | |
79 | } | |
80 | ||
81 | static int hfsplus_write_inode(struct inode *inode, int unused) | |
82 | { | |
83 | struct hfsplus_vh *vhdr; | |
84 | int ret = 0; | |
85 | ||
86 | dprint(DBG_INODE, "hfsplus_write_inode: %lu\n", inode->i_ino); | |
87 | hfsplus_ext_write_extent(inode); | |
88 | if (inode->i_ino >= HFSPLUS_FIRSTUSER_CNID) { | |
89 | return hfsplus_cat_write_inode(inode); | |
90 | } | |
91 | vhdr = HFSPLUS_SB(inode->i_sb).s_vhdr; | |
92 | switch (inode->i_ino) { | |
93 | case HFSPLUS_ROOT_CNID: | |
94 | ret = hfsplus_cat_write_inode(inode); | |
95 | break; | |
96 | case HFSPLUS_EXT_CNID: | |
97 | if (vhdr->ext_file.total_size != cpu_to_be64(inode->i_size)) { | |
98 | HFSPLUS_SB(inode->i_sb).flags |= HFSPLUS_SB_WRITEBACKUP; | |
99 | inode->i_sb->s_dirt = 1; | |
100 | } | |
101 | hfsplus_inode_write_fork(inode, &vhdr->ext_file); | |
102 | hfs_btree_write(HFSPLUS_SB(inode->i_sb).ext_tree); | |
103 | break; | |
104 | case HFSPLUS_CAT_CNID: | |
105 | if (vhdr->cat_file.total_size != cpu_to_be64(inode->i_size)) { | |
106 | HFSPLUS_SB(inode->i_sb).flags |= HFSPLUS_SB_WRITEBACKUP; | |
107 | inode->i_sb->s_dirt = 1; | |
108 | } | |
109 | hfsplus_inode_write_fork(inode, &vhdr->cat_file); | |
110 | hfs_btree_write(HFSPLUS_SB(inode->i_sb).cat_tree); | |
111 | break; | |
112 | case HFSPLUS_ALLOC_CNID: | |
113 | if (vhdr->alloc_file.total_size != cpu_to_be64(inode->i_size)) { | |
114 | HFSPLUS_SB(inode->i_sb).flags |= HFSPLUS_SB_WRITEBACKUP; | |
115 | inode->i_sb->s_dirt = 1; | |
116 | } | |
117 | hfsplus_inode_write_fork(inode, &vhdr->alloc_file); | |
118 | break; | |
119 | case HFSPLUS_START_CNID: | |
120 | if (vhdr->start_file.total_size != cpu_to_be64(inode->i_size)) { | |
121 | HFSPLUS_SB(inode->i_sb).flags |= HFSPLUS_SB_WRITEBACKUP; | |
122 | inode->i_sb->s_dirt = 1; | |
123 | } | |
124 | hfsplus_inode_write_fork(inode, &vhdr->start_file); | |
125 | break; | |
126 | case HFSPLUS_ATTR_CNID: | |
127 | if (vhdr->attr_file.total_size != cpu_to_be64(inode->i_size)) { | |
128 | HFSPLUS_SB(inode->i_sb).flags |= HFSPLUS_SB_WRITEBACKUP; | |
129 | inode->i_sb->s_dirt = 1; | |
130 | } | |
131 | hfsplus_inode_write_fork(inode, &vhdr->attr_file); | |
132 | hfs_btree_write(HFSPLUS_SB(inode->i_sb).attr_tree); | |
133 | break; | |
134 | } | |
135 | return ret; | |
136 | } | |
137 | ||
138 | static void hfsplus_clear_inode(struct inode *inode) | |
139 | { | |
140 | dprint(DBG_INODE, "hfsplus_clear_inode: %lu\n", inode->i_ino); | |
1da177e4 LT |
141 | if (HFSPLUS_IS_RSRC(inode)) { |
142 | HFSPLUS_I(HFSPLUS_I(inode).rsrc_inode).rsrc_inode = NULL; | |
143 | iput(HFSPLUS_I(inode).rsrc_inode); | |
144 | } | |
1da177e4 LT |
145 | } |
146 | ||
147 | static void hfsplus_write_super(struct super_block *sb) | |
148 | { | |
149 | struct hfsplus_vh *vhdr = HFSPLUS_SB(sb).s_vhdr; | |
150 | ||
151 | dprint(DBG_SUPER, "hfsplus_write_super\n"); | |
152 | sb->s_dirt = 0; | |
153 | if (sb->s_flags & MS_RDONLY) | |
154 | /* warn? */ | |
155 | return; | |
156 | ||
157 | vhdr->free_blocks = cpu_to_be32(HFSPLUS_SB(sb).free_blocks); | |
158 | vhdr->next_alloc = cpu_to_be32(HFSPLUS_SB(sb).next_alloc); | |
159 | vhdr->next_cnid = cpu_to_be32(HFSPLUS_SB(sb).next_cnid); | |
160 | vhdr->folder_count = cpu_to_be32(HFSPLUS_SB(sb).folder_count); | |
161 | vhdr->file_count = cpu_to_be32(HFSPLUS_SB(sb).file_count); | |
162 | ||
163 | mark_buffer_dirty(HFSPLUS_SB(sb).s_vhbh); | |
164 | if (HFSPLUS_SB(sb).flags & HFSPLUS_SB_WRITEBACKUP) { | |
165 | if (HFSPLUS_SB(sb).sect_count) { | |
166 | struct buffer_head *bh; | |
167 | u32 block, offset; | |
168 | ||
169 | block = HFSPLUS_SB(sb).blockoffset; | |
170 | block += (HFSPLUS_SB(sb).sect_count - 2) >> (sb->s_blocksize_bits - 9); | |
171 | offset = ((HFSPLUS_SB(sb).sect_count - 2) << 9) & (sb->s_blocksize - 1); | |
634725a9 | 172 | printk(KERN_DEBUG "hfs: backup: %u,%u,%u,%u\n", HFSPLUS_SB(sb).blockoffset, |
1da177e4 LT |
173 | HFSPLUS_SB(sb).sect_count, block, offset); |
174 | bh = sb_bread(sb, block); | |
175 | if (bh) { | |
176 | vhdr = (struct hfsplus_vh *)(bh->b_data + offset); | |
177 | if (be16_to_cpu(vhdr->signature) == HFSPLUS_VOLHEAD_SIG) { | |
178 | memcpy(vhdr, HFSPLUS_SB(sb).s_vhdr, sizeof(*vhdr)); | |
179 | mark_buffer_dirty(bh); | |
180 | brelse(bh); | |
181 | } else | |
634725a9 | 182 | printk(KERN_WARNING "hfs: backup not found!\n"); |
1da177e4 LT |
183 | } |
184 | } | |
185 | HFSPLUS_SB(sb).flags &= ~HFSPLUS_SB_WRITEBACKUP; | |
186 | } | |
187 | } | |
188 | ||
189 | static void hfsplus_put_super(struct super_block *sb) | |
190 | { | |
191 | dprint(DBG_SUPER, "hfsplus_put_super\n"); | |
945b0920 CL |
192 | if (!sb->s_fs_info) |
193 | return; | |
194 | if (!(sb->s_flags & MS_RDONLY) && HFSPLUS_SB(sb).s_vhdr) { | |
1da177e4 LT |
195 | struct hfsplus_vh *vhdr = HFSPLUS_SB(sb).s_vhdr; |
196 | ||
197 | vhdr->modify_date = hfsp_now2mt(); | |
198 | vhdr->attributes |= cpu_to_be32(HFSPLUS_VOL_UNMNT); | |
199 | vhdr->attributes &= cpu_to_be32(~HFSPLUS_VOL_INCNSTNT); | |
200 | mark_buffer_dirty(HFSPLUS_SB(sb).s_vhbh); | |
e39f07c8 | 201 | sync_dirty_buffer(HFSPLUS_SB(sb).s_vhbh); |
1da177e4 LT |
202 | } |
203 | ||
204 | hfs_btree_close(HFSPLUS_SB(sb).cat_tree); | |
205 | hfs_btree_close(HFSPLUS_SB(sb).ext_tree); | |
206 | iput(HFSPLUS_SB(sb).alloc_file); | |
207 | iput(HFSPLUS_SB(sb).hidden_dir); | |
208 | brelse(HFSPLUS_SB(sb).s_vhbh); | |
209 | if (HFSPLUS_SB(sb).nls) | |
210 | unload_nls(HFSPLUS_SB(sb).nls); | |
945b0920 CL |
211 | kfree(sb->s_fs_info); |
212 | sb->s_fs_info = NULL; | |
1da177e4 LT |
213 | } |
214 | ||
215 | static int hfsplus_statfs(struct super_block *sb, struct kstatfs *buf) | |
216 | { | |
217 | buf->f_type = HFSPLUS_SUPER_MAGIC; | |
218 | buf->f_bsize = sb->s_blocksize; | |
219 | buf->f_blocks = HFSPLUS_SB(sb).total_blocks << HFSPLUS_SB(sb).fs_shift; | |
220 | buf->f_bfree = HFSPLUS_SB(sb).free_blocks << HFSPLUS_SB(sb).fs_shift; | |
221 | buf->f_bavail = buf->f_bfree; | |
222 | buf->f_files = 0xFFFFFFFF; | |
223 | buf->f_ffree = 0xFFFFFFFF - HFSPLUS_SB(sb).next_cnid; | |
224 | buf->f_namelen = HFSPLUS_MAX_STRLEN; | |
225 | ||
226 | return 0; | |
227 | } | |
228 | ||
229 | static int hfsplus_remount(struct super_block *sb, int *flags, char *data) | |
230 | { | |
231 | if ((*flags & MS_RDONLY) == (sb->s_flags & MS_RDONLY)) | |
232 | return 0; | |
233 | if (!(*flags & MS_RDONLY)) { | |
234 | struct hfsplus_vh *vhdr = HFSPLUS_SB(sb).s_vhdr; | |
b0b623c3 RZ |
235 | struct hfsplus_sb_info sbi; |
236 | ||
237 | memset(&sbi, 0, sizeof(struct hfsplus_sb_info)); | |
238 | sbi.nls = HFSPLUS_SB(sb).nls; | |
239 | if (!hfsplus_parse_options(data, &sbi)) | |
240 | return -EINVAL; | |
1da177e4 LT |
241 | |
242 | if (!(vhdr->attributes & cpu_to_be32(HFSPLUS_VOL_UNMNT))) { | |
634725a9 | 243 | printk(KERN_WARNING "hfs: filesystem was not cleanly unmounted, " |
1da177e4 LT |
244 | "running fsck.hfsplus is recommended. leaving read-only.\n"); |
245 | sb->s_flags |= MS_RDONLY; | |
246 | *flags |= MS_RDONLY; | |
b0b623c3 RZ |
247 | } else if (sbi.flags & HFSPLUS_SB_FORCE) { |
248 | /* nothing */ | |
1da177e4 | 249 | } else if (vhdr->attributes & cpu_to_be32(HFSPLUS_VOL_SOFTLOCK)) { |
634725a9 | 250 | printk(KERN_WARNING "hfs: filesystem is marked locked, leaving read-only.\n"); |
1da177e4 LT |
251 | sb->s_flags |= MS_RDONLY; |
252 | *flags |= MS_RDONLY; | |
b0b623c3 | 253 | } else if (vhdr->attributes & cpu_to_be32(HFSPLUS_VOL_JOURNALED)) { |
634725a9 | 254 | printk(KERN_WARNING "hfs: filesystem is marked journaled, leaving read-only.\n"); |
b0b623c3 RZ |
255 | sb->s_flags |= MS_RDONLY; |
256 | *flags |= MS_RDONLY; | |
1da177e4 LT |
257 | } |
258 | } | |
259 | return 0; | |
260 | } | |
261 | ||
262 | static struct super_operations hfsplus_sops = { | |
263 | .alloc_inode = hfsplus_alloc_inode, | |
264 | .destroy_inode = hfsplus_destroy_inode, | |
265 | .read_inode = hfsplus_read_inode, | |
266 | .write_inode = hfsplus_write_inode, | |
267 | .clear_inode = hfsplus_clear_inode, | |
268 | .put_super = hfsplus_put_super, | |
269 | .write_super = hfsplus_write_super, | |
270 | .statfs = hfsplus_statfs, | |
271 | .remount_fs = hfsplus_remount, | |
717dd80e | 272 | .show_options = hfsplus_show_options, |
1da177e4 LT |
273 | }; |
274 | ||
275 | static int hfsplus_fill_super(struct super_block *sb, void *data, int silent) | |
276 | { | |
277 | struct hfsplus_vh *vhdr; | |
278 | struct hfsplus_sb_info *sbi; | |
279 | hfsplus_cat_entry entry; | |
280 | struct hfs_find_data fd; | |
281 | struct inode *root; | |
282 | struct qstr str; | |
283 | struct nls_table *nls = NULL; | |
284 | int err = -EINVAL; | |
285 | ||
286 | sbi = kmalloc(sizeof(struct hfsplus_sb_info), GFP_KERNEL); | |
287 | if (!sbi) | |
288 | return -ENOMEM; | |
289 | ||
290 | memset(sbi, 0, sizeof(HFSPLUS_SB(sb))); | |
291 | sb->s_fs_info = sbi; | |
292 | INIT_HLIST_HEAD(&sbi->rsrc_inodes); | |
717dd80e RZ |
293 | hfsplus_fill_defaults(sbi); |
294 | if (!hfsplus_parse_options(data, sbi)) { | |
634725a9 | 295 | printk(KERN_ERR "hfs: unable to parse mount options\n"); |
1da177e4 LT |
296 | err = -EINVAL; |
297 | goto cleanup; | |
298 | } | |
299 | ||
300 | /* temporarily use utf8 to correctly find the hidden dir below */ | |
301 | nls = sbi->nls; | |
302 | sbi->nls = load_nls("utf8"); | |
bd6a59b2 | 303 | if (!sbi->nls) { |
634725a9 | 304 | printk(KERN_ERR "hfs: unable to load nls for utf8\n"); |
1da177e4 LT |
305 | err = -EINVAL; |
306 | goto cleanup; | |
307 | } | |
308 | ||
309 | /* Grab the volume header */ | |
310 | if (hfsplus_read_wrapper(sb)) { | |
311 | if (!silent) | |
634725a9 | 312 | printk(KERN_WARNING "hfs: unable to find HFS+ superblock\n"); |
1da177e4 LT |
313 | err = -EINVAL; |
314 | goto cleanup; | |
315 | } | |
316 | vhdr = HFSPLUS_SB(sb).s_vhdr; | |
317 | ||
318 | /* Copy parts of the volume header into the superblock */ | |
319 | sb->s_magic = be16_to_cpu(vhdr->signature); | |
320 | if (be16_to_cpu(vhdr->version) != HFSPLUS_CURRENT_VERSION) { | |
634725a9 | 321 | printk(KERN_ERR "hfs: wrong filesystem version\n"); |
1da177e4 LT |
322 | goto cleanup; |
323 | } | |
324 | HFSPLUS_SB(sb).total_blocks = be32_to_cpu(vhdr->total_blocks); | |
325 | HFSPLUS_SB(sb).free_blocks = be32_to_cpu(vhdr->free_blocks); | |
326 | HFSPLUS_SB(sb).next_alloc = be32_to_cpu(vhdr->next_alloc); | |
327 | HFSPLUS_SB(sb).next_cnid = be32_to_cpu(vhdr->next_cnid); | |
328 | HFSPLUS_SB(sb).file_count = be32_to_cpu(vhdr->file_count); | |
329 | HFSPLUS_SB(sb).folder_count = be32_to_cpu(vhdr->folder_count); | |
330 | HFSPLUS_SB(sb).data_clump_blocks = be32_to_cpu(vhdr->data_clump_sz) >> HFSPLUS_SB(sb).alloc_blksz_shift; | |
331 | if (!HFSPLUS_SB(sb).data_clump_blocks) | |
332 | HFSPLUS_SB(sb).data_clump_blocks = 1; | |
333 | HFSPLUS_SB(sb).rsrc_clump_blocks = be32_to_cpu(vhdr->rsrc_clump_sz) >> HFSPLUS_SB(sb).alloc_blksz_shift; | |
334 | if (!HFSPLUS_SB(sb).rsrc_clump_blocks) | |
335 | HFSPLUS_SB(sb).rsrc_clump_blocks = 1; | |
336 | ||
337 | /* Set up operations so we can load metadata */ | |
338 | sb->s_op = &hfsplus_sops; | |
339 | sb->s_maxbytes = MAX_LFS_FILESIZE; | |
340 | ||
341 | if (!(vhdr->attributes & cpu_to_be32(HFSPLUS_VOL_UNMNT))) { | |
634725a9 RZ |
342 | printk(KERN_WARNING "hfs: Filesystem was not cleanly unmounted, " |
343 | "running fsck.hfsplus is recommended. mounting read-only.\n"); | |
1da177e4 | 344 | sb->s_flags |= MS_RDONLY; |
b0b623c3 RZ |
345 | } else if (sbi->flags & HFSPLUS_SB_FORCE) { |
346 | /* nothing */ | |
1da177e4 | 347 | } else if (vhdr->attributes & cpu_to_be32(HFSPLUS_VOL_SOFTLOCK)) { |
634725a9 | 348 | printk(KERN_WARNING "hfs: Filesystem is marked locked, mounting read-only.\n"); |
1da177e4 | 349 | sb->s_flags |= MS_RDONLY; |
b0b623c3 | 350 | } else if (vhdr->attributes & cpu_to_be32(HFSPLUS_VOL_JOURNALED)) { |
634725a9 RZ |
351 | printk(KERN_WARNING "hfs: write access to a jounaled filesystem is not supported, " |
352 | "use the force option at your own risk, mounting read-only.\n"); | |
b0b623c3 | 353 | sb->s_flags |= MS_RDONLY; |
1da177e4 | 354 | } |
b0b623c3 | 355 | sbi->flags &= ~HFSPLUS_SB_FORCE; |
1da177e4 LT |
356 | |
357 | /* Load metadata objects (B*Trees) */ | |
358 | HFSPLUS_SB(sb).ext_tree = hfs_btree_open(sb, HFSPLUS_EXT_CNID); | |
359 | if (!HFSPLUS_SB(sb).ext_tree) { | |
634725a9 | 360 | printk(KERN_ERR "hfs: failed to load extents file\n"); |
1da177e4 LT |
361 | goto cleanup; |
362 | } | |
363 | HFSPLUS_SB(sb).cat_tree = hfs_btree_open(sb, HFSPLUS_CAT_CNID); | |
364 | if (!HFSPLUS_SB(sb).cat_tree) { | |
634725a9 | 365 | printk(KERN_ERR "hfs: failed to load catalog file\n"); |
1da177e4 LT |
366 | goto cleanup; |
367 | } | |
368 | ||
369 | HFSPLUS_SB(sb).alloc_file = iget(sb, HFSPLUS_ALLOC_CNID); | |
370 | if (!HFSPLUS_SB(sb).alloc_file) { | |
634725a9 | 371 | printk(KERN_ERR "hfs: failed to load allocation file\n"); |
1da177e4 LT |
372 | goto cleanup; |
373 | } | |
374 | ||
375 | /* Load the root directory */ | |
376 | root = iget(sb, HFSPLUS_ROOT_CNID); | |
377 | sb->s_root = d_alloc_root(root); | |
378 | if (!sb->s_root) { | |
634725a9 | 379 | printk(KERN_ERR "hfs: failed to load root directory\n"); |
1da177e4 LT |
380 | iput(root); |
381 | goto cleanup; | |
382 | } | |
383 | ||
384 | str.len = sizeof(HFSP_HIDDENDIR_NAME) - 1; | |
385 | str.name = HFSP_HIDDENDIR_NAME; | |
386 | hfs_find_init(HFSPLUS_SB(sb).cat_tree, &fd); | |
387 | hfsplus_cat_build_key(sb, fd.search_key, HFSPLUS_ROOT_CNID, &str); | |
388 | if (!hfs_brec_read(&fd, &entry, sizeof(entry))) { | |
389 | hfs_find_exit(&fd); | |
390 | if (entry.type != cpu_to_be16(HFSPLUS_FOLDER)) | |
391 | goto cleanup; | |
392 | HFSPLUS_SB(sb).hidden_dir = iget(sb, be32_to_cpu(entry.folder.id)); | |
393 | if (!HFSPLUS_SB(sb).hidden_dir) | |
394 | goto cleanup; | |
395 | } else | |
396 | hfs_find_exit(&fd); | |
397 | ||
398 | if (sb->s_flags & MS_RDONLY) | |
399 | goto out; | |
400 | ||
401 | /* H+LX == hfsplusutils, H+Lx == this driver, H+lx is unused | |
402 | * all three are registered with Apple for our use | |
403 | */ | |
404 | vhdr->last_mount_vers = cpu_to_be32(HFSP_MOUNT_VERSION); | |
405 | vhdr->modify_date = hfsp_now2mt(); | |
406 | vhdr->write_count = cpu_to_be32(be32_to_cpu(vhdr->write_count) + 1); | |
407 | vhdr->attributes &= cpu_to_be32(~HFSPLUS_VOL_UNMNT); | |
408 | vhdr->attributes |= cpu_to_be32(HFSPLUS_VOL_INCNSTNT); | |
409 | mark_buffer_dirty(HFSPLUS_SB(sb).s_vhbh); | |
e39f07c8 | 410 | sync_dirty_buffer(HFSPLUS_SB(sb).s_vhbh); |
1da177e4 LT |
411 | |
412 | if (!HFSPLUS_SB(sb).hidden_dir) { | |
634725a9 | 413 | printk(KERN_DEBUG "hfs: create hidden dir...\n"); |
1da177e4 LT |
414 | HFSPLUS_SB(sb).hidden_dir = hfsplus_new_inode(sb, S_IFDIR); |
415 | hfsplus_create_cat(HFSPLUS_SB(sb).hidden_dir->i_ino, sb->s_root->d_inode, | |
416 | &str, HFSPLUS_SB(sb).hidden_dir); | |
417 | mark_inode_dirty(HFSPLUS_SB(sb).hidden_dir); | |
418 | } | |
419 | out: | |
420 | unload_nls(sbi->nls); | |
421 | sbi->nls = nls; | |
422 | return 0; | |
423 | ||
424 | cleanup: | |
425 | hfsplus_put_super(sb); | |
426 | if (nls) | |
427 | unload_nls(nls); | |
428 | return err; | |
429 | } | |
430 | ||
431 | MODULE_AUTHOR("Brad Boyer"); | |
432 | MODULE_DESCRIPTION("Extended Macintosh Filesystem"); | |
433 | MODULE_LICENSE("GPL"); | |
434 | ||
435 | static kmem_cache_t *hfsplus_inode_cachep; | |
436 | ||
437 | static struct inode *hfsplus_alloc_inode(struct super_block *sb) | |
438 | { | |
439 | struct hfsplus_inode_info *i; | |
440 | ||
441 | i = kmem_cache_alloc(hfsplus_inode_cachep, SLAB_KERNEL); | |
442 | return i ? &i->vfs_inode : NULL; | |
443 | } | |
444 | ||
445 | static void hfsplus_destroy_inode(struct inode *inode) | |
446 | { | |
447 | kmem_cache_free(hfsplus_inode_cachep, &HFSPLUS_I(inode)); | |
448 | } | |
449 | ||
450 | #define HFSPLUS_INODE_SIZE sizeof(struct hfsplus_inode_info) | |
451 | ||
452 | static struct super_block *hfsplus_get_sb(struct file_system_type *fs_type, | |
453 | int flags, const char *dev_name, void *data) | |
454 | { | |
455 | return get_sb_bdev(fs_type, flags, dev_name, data, hfsplus_fill_super); | |
456 | } | |
457 | ||
458 | static struct file_system_type hfsplus_fs_type = { | |
459 | .owner = THIS_MODULE, | |
460 | .name = "hfsplus", | |
461 | .get_sb = hfsplus_get_sb, | |
462 | .kill_sb = kill_block_super, | |
463 | .fs_flags = FS_REQUIRES_DEV, | |
464 | }; | |
465 | ||
466 | static void hfsplus_init_once(void *p, kmem_cache_t *cachep, unsigned long flags) | |
467 | { | |
468 | struct hfsplus_inode_info *i = p; | |
469 | ||
470 | if ((flags & (SLAB_CTOR_VERIFY|SLAB_CTOR_CONSTRUCTOR)) == SLAB_CTOR_CONSTRUCTOR) | |
471 | inode_init_once(&i->vfs_inode); | |
472 | } | |
473 | ||
474 | static int __init init_hfsplus_fs(void) | |
475 | { | |
476 | int err; | |
477 | ||
478 | hfsplus_inode_cachep = kmem_cache_create("hfsplus_icache", | |
479 | HFSPLUS_INODE_SIZE, 0, SLAB_HWCACHE_ALIGN, | |
480 | hfsplus_init_once, NULL); | |
481 | if (!hfsplus_inode_cachep) | |
482 | return -ENOMEM; | |
483 | err = register_filesystem(&hfsplus_fs_type); | |
484 | if (err) | |
485 | kmem_cache_destroy(hfsplus_inode_cachep); | |
486 | return err; | |
487 | } | |
488 | ||
489 | static void __exit exit_hfsplus_fs(void) | |
490 | { | |
491 | unregister_filesystem(&hfsplus_fs_type); | |
492 | if (kmem_cache_destroy(hfsplus_inode_cachep)) | |
634725a9 | 493 | printk(KERN_ERR "hfsplus_inode_cache: not all structures were freed\n"); |
1da177e4 LT |
494 | } |
495 | ||
496 | module_init(init_hfsplus_fs) | |
497 | module_exit(exit_hfsplus_fs) |