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Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * linux/fs/affs/inode.c | |
3 | * | |
4 | * (c) 1996 Hans-Joachim Widmaier - Rewritten | |
5 | * | |
6 | * (C) 1993 Ray Burr - Modified for Amiga FFS filesystem. | |
7 | * | |
8 | * (C) 1992 Eric Youngdale Modified for ISO 9660 filesystem. | |
9 | * | |
10 | * (C) 1991 Linus Torvalds - minix filesystem | |
11 | */ | |
12 | ||
13 | #include <linux/module.h> | |
14 | #include <linux/init.h> | |
15 | #include <linux/statfs.h> | |
16 | #include <linux/parser.h> | |
e18fa700 | 17 | #include <linux/magic.h> |
1da177e4 LT |
18 | #include "affs.h" |
19 | ||
20 | extern struct timezone sys_tz; | |
21 | ||
726c3342 | 22 | static int affs_statfs(struct dentry *dentry, struct kstatfs *buf); |
1da177e4 LT |
23 | static int affs_remount (struct super_block *sb, int *flags, char *data); |
24 | ||
25 | static void | |
26 | affs_put_super(struct super_block *sb) | |
27 | { | |
28 | struct affs_sb_info *sbi = AFFS_SB(sb); | |
29 | pr_debug("AFFS: put_super()\n"); | |
30 | ||
31 | if (!(sb->s_flags & MS_RDONLY)) { | |
32 | AFFS_ROOT_TAIL(sb, sbi->s_root_bh)->bm_flag = cpu_to_be32(1); | |
33 | secs_to_datestamp(get_seconds(), | |
34 | &AFFS_ROOT_TAIL(sb, sbi->s_root_bh)->disk_change); | |
35 | affs_fix_checksum(sb, sbi->s_root_bh); | |
36 | mark_buffer_dirty(sbi->s_root_bh); | |
37 | } | |
38 | ||
f99d49ad | 39 | kfree(sbi->s_prefix); |
1da177e4 LT |
40 | affs_free_bitmap(sb); |
41 | affs_brelse(sbi->s_root_bh); | |
42 | kfree(sbi); | |
43 | sb->s_fs_info = NULL; | |
44 | return; | |
45 | } | |
46 | ||
47 | static void | |
48 | affs_write_super(struct super_block *sb) | |
49 | { | |
50 | int clean = 2; | |
51 | struct affs_sb_info *sbi = AFFS_SB(sb); | |
52 | ||
53 | if (!(sb->s_flags & MS_RDONLY)) { | |
54 | // if (sbi->s_bitmap[i].bm_bh) { | |
55 | // if (buffer_dirty(sbi->s_bitmap[i].bm_bh)) { | |
56 | // clean = 0; | |
57 | AFFS_ROOT_TAIL(sb, sbi->s_root_bh)->bm_flag = cpu_to_be32(clean); | |
58 | secs_to_datestamp(get_seconds(), | |
59 | &AFFS_ROOT_TAIL(sb, sbi->s_root_bh)->disk_change); | |
60 | affs_fix_checksum(sb, sbi->s_root_bh); | |
61 | mark_buffer_dirty(sbi->s_root_bh); | |
62 | sb->s_dirt = !clean; /* redo until bitmap synced */ | |
63 | } else | |
64 | sb->s_dirt = 0; | |
65 | ||
66 | pr_debug("AFFS: write_super() at %lu, clean=%d\n", get_seconds(), clean); | |
67 | } | |
68 | ||
e18b890b | 69 | static struct kmem_cache * affs_inode_cachep; |
1da177e4 LT |
70 | |
71 | static struct inode *affs_alloc_inode(struct super_block *sb) | |
72 | { | |
73 | struct affs_inode_info *ei; | |
e94b1766 | 74 | ei = (struct affs_inode_info *)kmem_cache_alloc(affs_inode_cachep, GFP_KERNEL); |
1da177e4 LT |
75 | if (!ei) |
76 | return NULL; | |
77 | ei->vfs_inode.i_version = 1; | |
78 | return &ei->vfs_inode; | |
79 | } | |
80 | ||
81 | static void affs_destroy_inode(struct inode *inode) | |
82 | { | |
83 | kmem_cache_free(affs_inode_cachep, AFFS_I(inode)); | |
84 | } | |
85 | ||
e18b890b | 86 | static void init_once(void * foo, struct kmem_cache * cachep, unsigned long flags) |
1da177e4 LT |
87 | { |
88 | struct affs_inode_info *ei = (struct affs_inode_info *) foo; | |
89 | ||
a35afb83 CL |
90 | init_MUTEX(&ei->i_link_lock); |
91 | init_MUTEX(&ei->i_ext_lock); | |
92 | inode_init_once(&ei->vfs_inode); | |
1da177e4 LT |
93 | } |
94 | ||
95 | static int init_inodecache(void) | |
96 | { | |
97 | affs_inode_cachep = kmem_cache_create("affs_inode_cache", | |
98 | sizeof(struct affs_inode_info), | |
fffb60f9 PJ |
99 | 0, (SLAB_RECLAIM_ACCOUNT| |
100 | SLAB_MEM_SPREAD), | |
1da177e4 LT |
101 | init_once, NULL); |
102 | if (affs_inode_cachep == NULL) | |
103 | return -ENOMEM; | |
104 | return 0; | |
105 | } | |
106 | ||
107 | static void destroy_inodecache(void) | |
108 | { | |
1a1d92c1 | 109 | kmem_cache_destroy(affs_inode_cachep); |
1da177e4 LT |
110 | } |
111 | ||
ee9b6d61 | 112 | static const struct super_operations affs_sops = { |
1da177e4 LT |
113 | .alloc_inode = affs_alloc_inode, |
114 | .destroy_inode = affs_destroy_inode, | |
115 | .read_inode = affs_read_inode, | |
116 | .write_inode = affs_write_inode, | |
117 | .put_inode = affs_put_inode, | |
2be3c790 | 118 | .drop_inode = affs_drop_inode, |
1da177e4 LT |
119 | .delete_inode = affs_delete_inode, |
120 | .clear_inode = affs_clear_inode, | |
121 | .put_super = affs_put_super, | |
122 | .write_super = affs_write_super, | |
123 | .statfs = affs_statfs, | |
124 | .remount_fs = affs_remount, | |
125 | }; | |
126 | ||
127 | enum { | |
128 | Opt_bs, Opt_mode, Opt_mufs, Opt_prefix, Opt_protect, | |
129 | Opt_reserved, Opt_root, Opt_setgid, Opt_setuid, | |
130 | Opt_verbose, Opt_volume, Opt_ignore, Opt_err, | |
131 | }; | |
132 | ||
133 | static match_table_t tokens = { | |
134 | {Opt_bs, "bs=%u"}, | |
135 | {Opt_mode, "mode=%o"}, | |
136 | {Opt_mufs, "mufs"}, | |
137 | {Opt_prefix, "prefix=%s"}, | |
138 | {Opt_protect, "protect"}, | |
139 | {Opt_reserved, "reserved=%u"}, | |
140 | {Opt_root, "root=%u"}, | |
141 | {Opt_setgid, "setgid=%u"}, | |
142 | {Opt_setuid, "setuid=%u"}, | |
143 | {Opt_verbose, "verbose"}, | |
144 | {Opt_volume, "volume=%s"}, | |
145 | {Opt_ignore, "grpquota"}, | |
146 | {Opt_ignore, "noquota"}, | |
147 | {Opt_ignore, "quota"}, | |
148 | {Opt_ignore, "usrquota"}, | |
149 | {Opt_err, NULL}, | |
150 | }; | |
151 | ||
152 | static int | |
153 | parse_options(char *options, uid_t *uid, gid_t *gid, int *mode, int *reserved, s32 *root, | |
154 | int *blocksize, char **prefix, char *volume, unsigned long *mount_opts) | |
155 | { | |
156 | char *p; | |
157 | substring_t args[MAX_OPT_ARGS]; | |
158 | ||
159 | /* Fill in defaults */ | |
160 | ||
161 | *uid = current->uid; | |
162 | *gid = current->gid; | |
163 | *reserved = 2; | |
164 | *root = -1; | |
165 | *blocksize = -1; | |
166 | volume[0] = ':'; | |
167 | volume[1] = 0; | |
168 | *mount_opts = 0; | |
169 | if (!options) | |
170 | return 1; | |
171 | ||
172 | while ((p = strsep(&options, ",")) != NULL) { | |
173 | int token, n, option; | |
174 | if (!*p) | |
175 | continue; | |
176 | ||
177 | token = match_token(p, tokens, args); | |
178 | switch (token) { | |
179 | case Opt_bs: | |
180 | if (match_int(&args[0], &n)) | |
181 | return -EINVAL; | |
182 | if (n != 512 && n != 1024 && n != 2048 | |
183 | && n != 4096) { | |
184 | printk ("AFFS: Invalid blocksize (512, 1024, 2048, 4096 allowed)\n"); | |
185 | return 0; | |
186 | } | |
187 | *blocksize = n; | |
188 | break; | |
189 | case Opt_mode: | |
190 | if (match_octal(&args[0], &option)) | |
191 | return 1; | |
192 | *mode = option & 0777; | |
193 | *mount_opts |= SF_SETMODE; | |
194 | break; | |
195 | case Opt_mufs: | |
196 | *mount_opts |= SF_MUFS; | |
197 | break; | |
198 | case Opt_prefix: | |
f99d49ad JJ |
199 | /* Free any previous prefix */ |
200 | kfree(*prefix); | |
201 | *prefix = NULL; | |
1da177e4 LT |
202 | *prefix = match_strdup(&args[0]); |
203 | if (!*prefix) | |
204 | return 0; | |
205 | *mount_opts |= SF_PREFIX; | |
206 | break; | |
207 | case Opt_protect: | |
208 | *mount_opts |= SF_IMMUTABLE; | |
209 | break; | |
210 | case Opt_reserved: | |
211 | if (match_int(&args[0], reserved)) | |
212 | return 1; | |
213 | break; | |
214 | case Opt_root: | |
215 | if (match_int(&args[0], root)) | |
216 | return 1; | |
217 | break; | |
218 | case Opt_setgid: | |
219 | if (match_int(&args[0], &option)) | |
220 | return 1; | |
221 | *gid = option; | |
222 | *mount_opts |= SF_SETGID; | |
223 | break; | |
224 | case Opt_setuid: | |
225 | if (match_int(&args[0], &option)) | |
226 | return -EINVAL; | |
227 | *uid = option; | |
228 | *mount_opts |= SF_SETUID; | |
229 | break; | |
230 | case Opt_verbose: | |
231 | *mount_opts |= SF_VERBOSE; | |
232 | break; | |
233 | case Opt_volume: { | |
234 | char *vol = match_strdup(&args[0]); | |
235 | strlcpy(volume, vol, 32); | |
236 | kfree(vol); | |
237 | break; | |
238 | } | |
239 | case Opt_ignore: | |
240 | /* Silently ignore the quota options */ | |
241 | break; | |
242 | default: | |
243 | printk("AFFS: Unrecognized mount option \"%s\" " | |
244 | "or missing value\n", p); | |
245 | return 0; | |
246 | } | |
247 | } | |
248 | return 1; | |
249 | } | |
250 | ||
251 | /* This function definitely needs to be split up. Some fine day I'll | |
252 | * hopefully have the guts to do so. Until then: sorry for the mess. | |
253 | */ | |
254 | ||
255 | static int affs_fill_super(struct super_block *sb, void *data, int silent) | |
256 | { | |
257 | struct affs_sb_info *sbi; | |
258 | struct buffer_head *root_bh = NULL; | |
259 | struct buffer_head *boot_bh; | |
260 | struct inode *root_inode = NULL; | |
261 | s32 root_block; | |
262 | int size, blocksize; | |
263 | u32 chksum; | |
264 | int num_bm; | |
265 | int i, j; | |
266 | s32 key; | |
267 | uid_t uid; | |
268 | gid_t gid; | |
269 | int reserved; | |
270 | unsigned long mount_flags; | |
271 | int tmp_flags; /* fix remount prototype... */ | |
2b943cf0 | 272 | u8 sig[4]; |
1da177e4 LT |
273 | |
274 | pr_debug("AFFS: read_super(%s)\n",data ? (const char *)data : "no options"); | |
275 | ||
276 | sb->s_magic = AFFS_SUPER_MAGIC; | |
277 | sb->s_op = &affs_sops; | |
278 | sb->s_flags |= MS_NODIRATIME; | |
279 | ||
f8314dc6 | 280 | sbi = kzalloc(sizeof(struct affs_sb_info), GFP_KERNEL); |
1da177e4 LT |
281 | if (!sbi) |
282 | return -ENOMEM; | |
283 | sb->s_fs_info = sbi; | |
1da177e4 LT |
284 | init_MUTEX(&sbi->s_bmlock); |
285 | ||
286 | if (!parse_options(data,&uid,&gid,&i,&reserved,&root_block, | |
287 | &blocksize,&sbi->s_prefix, | |
288 | sbi->s_volume, &mount_flags)) { | |
289 | printk(KERN_ERR "AFFS: Error parsing options\n"); | |
290 | return -EINVAL; | |
291 | } | |
292 | /* N.B. after this point s_prefix must be released */ | |
293 | ||
294 | sbi->s_flags = mount_flags; | |
295 | sbi->s_mode = i; | |
296 | sbi->s_uid = uid; | |
297 | sbi->s_gid = gid; | |
298 | sbi->s_reserved= reserved; | |
299 | ||
300 | /* Get the size of the device in 512-byte blocks. | |
301 | * If we later see that the partition uses bigger | |
302 | * blocks, we will have to change it. | |
303 | */ | |
304 | ||
305 | size = sb->s_bdev->bd_inode->i_size >> 9; | |
306 | pr_debug("AFFS: initial blocksize=%d, #blocks=%d\n", 512, size); | |
307 | ||
308 | affs_set_blocksize(sb, PAGE_SIZE); | |
309 | /* Try to find root block. Its location depends on the block size. */ | |
310 | ||
311 | i = 512; | |
312 | j = 4096; | |
313 | if (blocksize > 0) { | |
314 | i = j = blocksize; | |
315 | size = size / (blocksize / 512); | |
316 | } | |
317 | for (blocksize = i, key = 0; blocksize <= j; blocksize <<= 1, size >>= 1) { | |
318 | sbi->s_root_block = root_block; | |
319 | if (root_block < 0) | |
320 | sbi->s_root_block = (reserved + size - 1) / 2; | |
321 | pr_debug("AFFS: setting blocksize to %d\n", blocksize); | |
322 | affs_set_blocksize(sb, blocksize); | |
323 | sbi->s_partition_size = size; | |
324 | ||
325 | /* The root block location that was calculated above is not | |
326 | * correct if the partition size is an odd number of 512- | |
327 | * byte blocks, which will be rounded down to a number of | |
328 | * 1024-byte blocks, and if there were an even number of | |
329 | * reserved blocks. Ideally, all partition checkers should | |
330 | * report the real number of blocks of the real blocksize, | |
331 | * but since this just cannot be done, we have to try to | |
332 | * find the root block anyways. In the above case, it is one | |
333 | * block behind the calculated one. So we check this one, too. | |
334 | */ | |
335 | for (num_bm = 0; num_bm < 2; num_bm++) { | |
336 | pr_debug("AFFS: Dev %s, trying root=%u, bs=%d, " | |
337 | "size=%d, reserved=%d\n", | |
338 | sb->s_id, | |
339 | sbi->s_root_block + num_bm, | |
340 | blocksize, size, reserved); | |
341 | root_bh = affs_bread(sb, sbi->s_root_block + num_bm); | |
342 | if (!root_bh) | |
343 | continue; | |
344 | if (!affs_checksum_block(sb, root_bh) && | |
345 | be32_to_cpu(AFFS_ROOT_HEAD(root_bh)->ptype) == T_SHORT && | |
346 | be32_to_cpu(AFFS_ROOT_TAIL(sb, root_bh)->stype) == ST_ROOT) { | |
347 | sbi->s_hashsize = blocksize / 4 - 56; | |
348 | sbi->s_root_block += num_bm; | |
349 | key = 1; | |
350 | goto got_root; | |
351 | } | |
352 | affs_brelse(root_bh); | |
353 | root_bh = NULL; | |
354 | } | |
355 | } | |
356 | if (!silent) | |
357 | printk(KERN_ERR "AFFS: No valid root block on device %s\n", | |
358 | sb->s_id); | |
359 | goto out_error; | |
360 | ||
361 | /* N.B. after this point bh must be released */ | |
362 | got_root: | |
363 | root_block = sbi->s_root_block; | |
364 | ||
365 | /* Find out which kind of FS we have */ | |
366 | boot_bh = sb_bread(sb, 0); | |
367 | if (!boot_bh) { | |
368 | printk(KERN_ERR "AFFS: Cannot read boot block\n"); | |
369 | goto out_error; | |
370 | } | |
2b943cf0 | 371 | memcpy(sig, boot_bh->b_data, 4); |
1da177e4 | 372 | brelse(boot_bh); |
2b943cf0 | 373 | chksum = be32_to_cpu(*(__be32 *)sig); |
1da177e4 LT |
374 | |
375 | /* Dircache filesystems are compatible with non-dircache ones | |
376 | * when reading. As long as they aren't supported, writing is | |
377 | * not recommended. | |
378 | */ | |
379 | if ((chksum == FS_DCFFS || chksum == MUFS_DCFFS || chksum == FS_DCOFS | |
380 | || chksum == MUFS_DCOFS) && !(sb->s_flags & MS_RDONLY)) { | |
381 | printk(KERN_NOTICE "AFFS: Dircache FS - mounting %s read only\n", | |
382 | sb->s_id); | |
383 | sb->s_flags |= MS_RDONLY; | |
384 | } | |
385 | switch (chksum) { | |
386 | case MUFS_FS: | |
387 | case MUFS_INTLFFS: | |
388 | case MUFS_DCFFS: | |
389 | sbi->s_flags |= SF_MUFS; | |
390 | /* fall thru */ | |
391 | case FS_INTLFFS: | |
392 | case FS_DCFFS: | |
393 | sbi->s_flags |= SF_INTL; | |
394 | break; | |
395 | case MUFS_FFS: | |
396 | sbi->s_flags |= SF_MUFS; | |
397 | break; | |
398 | case FS_FFS: | |
399 | break; | |
400 | case MUFS_OFS: | |
401 | sbi->s_flags |= SF_MUFS; | |
402 | /* fall thru */ | |
403 | case FS_OFS: | |
404 | sbi->s_flags |= SF_OFS; | |
405 | sb->s_flags |= MS_NOEXEC; | |
406 | break; | |
407 | case MUFS_DCOFS: | |
408 | case MUFS_INTLOFS: | |
409 | sbi->s_flags |= SF_MUFS; | |
410 | case FS_DCOFS: | |
411 | case FS_INTLOFS: | |
412 | sbi->s_flags |= SF_INTL | SF_OFS; | |
413 | sb->s_flags |= MS_NOEXEC; | |
414 | break; | |
415 | default: | |
416 | printk(KERN_ERR "AFFS: Unknown filesystem on device %s: %08X\n", | |
417 | sb->s_id, chksum); | |
418 | goto out_error; | |
419 | } | |
420 | ||
421 | if (mount_flags & SF_VERBOSE) { | |
2b943cf0 AV |
422 | u8 len = AFFS_ROOT_TAIL(sb, root_bh)->disk_name[0]; |
423 | printk(KERN_NOTICE "AFFS: Mounting volume \"%.*s\": Type=%.3s\\%c, Blocksize=%d\n", | |
424 | len > 31 ? 31 : len, | |
1da177e4 | 425 | AFFS_ROOT_TAIL(sb, root_bh)->disk_name + 1, |
2b943cf0 | 426 | sig, sig[3] + '0', blocksize); |
1da177e4 LT |
427 | } |
428 | ||
429 | sb->s_flags |= MS_NODEV | MS_NOSUID; | |
430 | ||
431 | sbi->s_data_blksize = sb->s_blocksize; | |
432 | if (sbi->s_flags & SF_OFS) | |
433 | sbi->s_data_blksize -= 24; | |
434 | ||
435 | /* Keep super block in cache */ | |
436 | sbi->s_root_bh = root_bh; | |
437 | /* N.B. after this point s_root_bh must be released */ | |
438 | ||
439 | tmp_flags = sb->s_flags; | |
440 | if (affs_init_bitmap(sb, &tmp_flags)) | |
441 | goto out_error; | |
442 | sb->s_flags = tmp_flags; | |
443 | ||
444 | /* set up enough so that it can read an inode */ | |
445 | ||
446 | root_inode = iget(sb, root_block); | |
447 | sb->s_root = d_alloc_root(root_inode); | |
448 | if (!sb->s_root) { | |
449 | printk(KERN_ERR "AFFS: Get root inode failed\n"); | |
450 | goto out_error; | |
451 | } | |
452 | sb->s_root->d_op = &affs_dentry_operations; | |
453 | ||
454 | pr_debug("AFFS: s_flags=%lX\n",sb->s_flags); | |
455 | return 0; | |
456 | ||
457 | /* | |
458 | * Begin the cascaded cleanup ... | |
459 | */ | |
460 | out_error: | |
461 | if (root_inode) | |
462 | iput(root_inode); | |
f99d49ad | 463 | kfree(sbi->s_bitmap); |
1da177e4 | 464 | affs_brelse(root_bh); |
f99d49ad | 465 | kfree(sbi->s_prefix); |
1da177e4 LT |
466 | kfree(sbi); |
467 | sb->s_fs_info = NULL; | |
468 | return -EINVAL; | |
469 | } | |
470 | ||
471 | static int | |
472 | affs_remount(struct super_block *sb, int *flags, char *data) | |
473 | { | |
474 | struct affs_sb_info *sbi = AFFS_SB(sb); | |
475 | int blocksize; | |
476 | uid_t uid; | |
477 | gid_t gid; | |
478 | int mode; | |
479 | int reserved; | |
480 | int root_block; | |
481 | unsigned long mount_flags; | |
482 | int res = 0; | |
483 | ||
484 | pr_debug("AFFS: remount(flags=0x%x,opts=\"%s\")\n",*flags,data); | |
485 | ||
486 | *flags |= MS_NODIRATIME; | |
487 | ||
488 | if (!parse_options(data,&uid,&gid,&mode,&reserved,&root_block, | |
489 | &blocksize,&sbi->s_prefix,sbi->s_volume,&mount_flags)) | |
490 | return -EINVAL; | |
491 | sbi->s_flags = mount_flags; | |
492 | sbi->s_mode = mode; | |
493 | sbi->s_uid = uid; | |
494 | sbi->s_gid = gid; | |
495 | ||
496 | if ((*flags & MS_RDONLY) == (sb->s_flags & MS_RDONLY)) | |
497 | return 0; | |
498 | if (*flags & MS_RDONLY) { | |
499 | sb->s_dirt = 1; | |
500 | while (sb->s_dirt) | |
501 | affs_write_super(sb); | |
502 | affs_free_bitmap(sb); | |
503 | } else | |
504 | res = affs_init_bitmap(sb, flags); | |
505 | ||
506 | return res; | |
507 | } | |
508 | ||
509 | static int | |
726c3342 | 510 | affs_statfs(struct dentry *dentry, struct kstatfs *buf) |
1da177e4 | 511 | { |
726c3342 | 512 | struct super_block *sb = dentry->d_sb; |
1da177e4 LT |
513 | int free; |
514 | ||
515 | pr_debug("AFFS: statfs() partsize=%d, reserved=%d\n",AFFS_SB(sb)->s_partition_size, | |
516 | AFFS_SB(sb)->s_reserved); | |
517 | ||
518 | free = affs_count_free_blocks(sb); | |
519 | buf->f_type = AFFS_SUPER_MAGIC; | |
520 | buf->f_bsize = sb->s_blocksize; | |
521 | buf->f_blocks = AFFS_SB(sb)->s_partition_size - AFFS_SB(sb)->s_reserved; | |
522 | buf->f_bfree = free; | |
523 | buf->f_bavail = free; | |
524 | return 0; | |
525 | } | |
526 | ||
454e2398 DH |
527 | static int affs_get_sb(struct file_system_type *fs_type, |
528 | int flags, const char *dev_name, void *data, struct vfsmount *mnt) | |
1da177e4 | 529 | { |
454e2398 DH |
530 | return get_sb_bdev(fs_type, flags, dev_name, data, affs_fill_super, |
531 | mnt); | |
1da177e4 LT |
532 | } |
533 | ||
534 | static struct file_system_type affs_fs_type = { | |
535 | .owner = THIS_MODULE, | |
536 | .name = "affs", | |
537 | .get_sb = affs_get_sb, | |
538 | .kill_sb = kill_block_super, | |
539 | .fs_flags = FS_REQUIRES_DEV, | |
540 | }; | |
541 | ||
542 | static int __init init_affs_fs(void) | |
543 | { | |
544 | int err = init_inodecache(); | |
545 | if (err) | |
546 | goto out1; | |
547 | err = register_filesystem(&affs_fs_type); | |
548 | if (err) | |
549 | goto out; | |
550 | return 0; | |
551 | out: | |
552 | destroy_inodecache(); | |
553 | out1: | |
554 | return err; | |
555 | } | |
556 | ||
557 | static void __exit exit_affs_fs(void) | |
558 | { | |
559 | unregister_filesystem(&affs_fs_type); | |
560 | destroy_inodecache(); | |
561 | } | |
562 | ||
563 | MODULE_DESCRIPTION("Amiga filesystem support for Linux"); | |
564 | MODULE_LICENSE("GPL"); | |
565 | ||
566 | module_init(init_affs_fs) | |
567 | module_exit(exit_affs_fs) |