2 * linux/fs/befs/linuxvfs.c
4 * Copyright (C) 2001 Will Dyson <will_dyson@pobox.com
8 #include <linux/module.h>
9 #include <linux/slab.h>
11 #include <linux/errno.h>
12 #include <linux/stat.h>
13 #include <linux/nls.h>
14 #include <linux/buffer_head.h>
15 #include <linux/vfs.h>
16 #include <linux/parser.h>
17 #include <linux/namei.h>
22 #include "datastream.h"
27 MODULE_DESCRIPTION("BeOS File System (BeFS) driver");
28 MODULE_AUTHOR("Will Dyson");
29 MODULE_LICENSE("GPL");
31 /* The units the vfs expects inode->i_blocks to be in */
32 #define VFS_BLOCK_SIZE 512
34 static int befs_readdir(struct file *, void *, filldir_t);
35 static int befs_get_block(struct inode *, sector_t, struct buffer_head *, int);
36 static int befs_readpage(struct file *file, struct page *page);
37 static sector_t befs_bmap(struct address_space *mapping, sector_t block);
38 static struct dentry *befs_lookup(struct inode *, struct dentry *, struct nameidata *);
39 static void befs_read_inode(struct inode *ino);
40 static struct inode *befs_alloc_inode(struct super_block *sb);
41 static void befs_destroy_inode(struct inode *inode);
42 static int befs_init_inodecache(void);
43 static void befs_destroy_inodecache(void);
44 static void *befs_follow_link(struct dentry *, struct nameidata *);
45 static void befs_put_link(struct dentry *, struct nameidata *, void *);
46 static int befs_utf2nls(struct super_block *sb, const char *in, int in_len,
47 char **out, int *out_len);
48 static int befs_nls2utf(struct super_block *sb, const char *in, int in_len,
49 char **out, int *out_len);
50 static void befs_put_super(struct super_block *);
51 static int befs_remount(struct super_block *, int *, char *);
52 static int befs_statfs(struct super_block *, struct kstatfs *);
53 static int parse_options(char *, befs_mount_options *);
55 static const struct super_operations befs_sops = {
56 .read_inode = befs_read_inode, /* initialize & read inode */
57 .alloc_inode = befs_alloc_inode, /* allocate a new inode */
58 .destroy_inode = befs_destroy_inode, /* deallocate an inode */
59 .put_super = befs_put_super, /* uninit super */
60 .statfs = befs_statfs, /* statfs */
61 .remount_fs = befs_remount,
64 /* slab cache for befs_inode_info objects */
65 static kmem_cache_t *befs_inode_cachep;
67 static struct file_operations befs_dir_operations = {
68 .read = generic_read_dir,
69 .readdir = befs_readdir,
72 static struct inode_operations befs_dir_inode_operations = {
73 .lookup = befs_lookup,
76 static struct file_operations befs_file_operations = {
77 .llseek = default_llseek,
78 .read = generic_file_read,
79 .mmap = generic_file_readonly_mmap,
82 static struct address_space_operations befs_aops = {
83 .readpage = befs_readpage,
84 .sync_page = block_sync_page,
88 static struct inode_operations befs_symlink_inode_operations = {
89 .readlink = generic_readlink,
90 .follow_link = befs_follow_link,
91 .put_link = befs_put_link,
95 * Called by generic_file_read() to read a page of data
97 * In turn, simply calls a generic block read function and
98 * passes it the address of befs_get_block, for mapping file
99 * positions to disk blocks.
102 befs_readpage(struct file *file, struct page *page)
104 return block_read_full_page(page, befs_get_block);
108 befs_bmap(struct address_space *mapping, sector_t block)
110 return generic_block_bmap(mapping, block, befs_get_block);
114 * Generic function to map a file position (block) to a
115 * disk offset (passed back in bh_result).
117 * Used by many higher level functions.
119 * Calls befs_fblock2brun() in datastream.c to do the real work.
125 befs_get_block(struct inode *inode, sector_t block,
126 struct buffer_head *bh_result, int create)
128 struct super_block *sb = inode->i_sb;
129 befs_data_stream *ds = &BEFS_I(inode)->i_data.ds;
130 befs_block_run run = BAD_IADDR;
134 befs_debug(sb, "---> befs_get_block() for inode %lu, block %ld",
135 inode->i_ino, block);
138 befs_error(sb, "befs_get_block() was asked for a block "
139 "number less than zero: block %ld in inode %lu",
140 block, inode->i_ino);
145 befs_error(sb, "befs_get_block() was asked to write to "
146 "block %ld in inode %lu", block, inode->i_ino);
150 res = befs_fblock2brun(sb, ds, block, &run);
151 if (res != BEFS_OK) {
153 "<--- befs_get_block() for inode %lu, block "
154 "%ld ERROR", inode->i_ino, block);
158 disk_off = (ulong) iaddr2blockno(sb, &run);
160 map_bh(bh_result, inode->i_sb, disk_off);
162 befs_debug(sb, "<--- befs_get_block() for inode %lu, block %ld, "
163 "disk address %lu", inode->i_ino, block, disk_off);
168 static struct dentry *
169 befs_lookup(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
171 struct inode *inode = NULL;
172 struct super_block *sb = dir->i_sb;
173 befs_data_stream *ds = &BEFS_I(dir)->i_data.ds;
178 const char *name = dentry->d_name.name;
180 befs_debug(sb, "---> befs_lookup() "
181 "name %s inode %ld", dentry->d_name.name, dir->i_ino);
183 /* Convert to UTF-8 */
184 if (BEFS_SB(sb)->nls) {
186 befs_nls2utf(sb, name, strlen(name), &utfname, &utfnamelen);
188 befs_debug(sb, "<--- befs_lookup() ERROR");
191 ret = befs_btree_find(sb, ds, utfname, &offset);
195 ret = befs_btree_find(sb, ds, dentry->d_name.name, &offset);
198 if (ret == BEFS_BT_NOT_FOUND) {
199 befs_debug(sb, "<--- befs_lookup() %s not found",
200 dentry->d_name.name);
201 return ERR_PTR(-ENOENT);
203 } else if (ret != BEFS_OK || offset == 0) {
204 befs_warning(sb, "<--- befs_lookup() Error");
205 return ERR_PTR(-ENODATA);
208 inode = iget(dir->i_sb, (ino_t) offset);
210 return ERR_PTR(-EACCES);
212 d_add(dentry, inode);
214 befs_debug(sb, "<--- befs_lookup()");
220 befs_readdir(struct file *filp, void *dirent, filldir_t filldir)
222 struct inode *inode = filp->f_dentry->d_inode;
223 struct super_block *sb = inode->i_sb;
224 befs_data_stream *ds = &BEFS_I(inode)->i_data.ds;
228 unsigned char d_type;
229 char keybuf[BEFS_NAME_LEN + 1];
232 const char *dirname = filp->f_dentry->d_name.name;
234 befs_debug(sb, "---> befs_readdir() "
235 "name %s, inode %ld, filp->f_pos %Ld",
236 dirname, inode->i_ino, filp->f_pos);
238 result = befs_btree_read(sb, ds, filp->f_pos, BEFS_NAME_LEN + 1,
239 keybuf, &keysize, &value);
241 if (result == BEFS_ERR) {
242 befs_debug(sb, "<--- befs_readdir() ERROR");
243 befs_error(sb, "IO error reading %s (inode %lu)",
244 dirname, inode->i_ino);
247 } else if (result == BEFS_BT_END) {
248 befs_debug(sb, "<--- befs_readdir() END");
251 } else if (result == BEFS_BT_EMPTY) {
252 befs_debug(sb, "<--- befs_readdir() Empty directory");
259 if (BEFS_SB(sb)->nls) {
261 befs_utf2nls(sb, keybuf, keysize, &nlsname, &nlsnamelen);
263 befs_debug(sb, "<--- befs_readdir() ERROR");
266 result = filldir(dirent, nlsname, nlsnamelen, filp->f_pos,
267 (ino_t) value, d_type);
271 result = filldir(dirent, keybuf, keysize, filp->f_pos,
272 (ino_t) value, d_type);
277 befs_debug(sb, "<--- befs_readdir() filp->f_pos %Ld", filp->f_pos);
282 static struct inode *
283 befs_alloc_inode(struct super_block *sb)
285 struct befs_inode_info *bi;
286 bi = (struct befs_inode_info *)kmem_cache_alloc(befs_inode_cachep,
290 return &bi->vfs_inode;
294 befs_destroy_inode(struct inode *inode)
296 kmem_cache_free(befs_inode_cachep, BEFS_I(inode));
299 static void init_once(void * foo, kmem_cache_t * cachep, unsigned long flags)
301 struct befs_inode_info *bi = (struct befs_inode_info *) foo;
303 if ((flags & (SLAB_CTOR_VERIFY|SLAB_CTOR_CONSTRUCTOR)) ==
304 SLAB_CTOR_CONSTRUCTOR) {
305 inode_init_once(&bi->vfs_inode);
310 befs_read_inode(struct inode *inode)
312 struct buffer_head *bh = NULL;
313 befs_inode *raw_inode = NULL;
315 struct super_block *sb = inode->i_sb;
316 befs_sb_info *befs_sb = BEFS_SB(sb);
317 befs_inode_info *befs_ino = NULL;
319 befs_debug(sb, "---> befs_read_inode() " "inode = %lu", inode->i_ino);
321 befs_ino = BEFS_I(inode);
323 /* convert from vfs's inode number to befs's inode number */
324 befs_ino->i_inode_num = blockno2iaddr(sb, inode->i_ino);
326 befs_debug(sb, " real inode number [%u, %hu, %hu]",
327 befs_ino->i_inode_num.allocation_group,
328 befs_ino->i_inode_num.start, befs_ino->i_inode_num.len);
330 bh = befs_bread(sb, inode->i_ino);
332 befs_error(sb, "unable to read inode block - "
333 "inode = %lu", inode->i_ino);
337 raw_inode = (befs_inode *) bh->b_data;
339 befs_dump_inode(sb, raw_inode);
341 if (befs_check_inode(sb, raw_inode, inode->i_ino) != BEFS_OK) {
342 befs_error(sb, "Bad inode: %lu", inode->i_ino);
346 inode->i_mode = (umode_t) fs32_to_cpu(sb, raw_inode->mode);
349 * set uid and gid. But since current BeOS is single user OS, so
350 * you can change by "uid" or "gid" options.
353 inode->i_uid = befs_sb->mount_opts.use_uid ?
354 befs_sb->mount_opts.uid : (uid_t) fs32_to_cpu(sb, raw_inode->uid);
355 inode->i_gid = befs_sb->mount_opts.use_gid ?
356 befs_sb->mount_opts.gid : (gid_t) fs32_to_cpu(sb, raw_inode->gid);
361 * BEFS's time is 64 bits, but current VFS is 32 bits...
362 * BEFS don't have access time. Nor inode change time. VFS
363 * doesn't have creation time.
364 * Also, the lower 16 bits of the last_modified_time and
365 * create_time are just a counter to help ensure uniqueness
366 * for indexing purposes. (PFD, page 54)
369 inode->i_mtime.tv_sec =
370 fs64_to_cpu(sb, raw_inode->last_modified_time) >> 16;
371 inode->i_mtime.tv_nsec = 0; /* lower 16 bits are not a time */
372 inode->i_ctime = inode->i_mtime;
373 inode->i_atime = inode->i_mtime;
374 inode->i_blksize = befs_sb->block_size;
376 befs_ino->i_inode_num = fsrun_to_cpu(sb, raw_inode->inode_num);
377 befs_ino->i_parent = fsrun_to_cpu(sb, raw_inode->parent);
378 befs_ino->i_attribute = fsrun_to_cpu(sb, raw_inode->attributes);
379 befs_ino->i_flags = fs32_to_cpu(sb, raw_inode->flags);
381 if (S_ISLNK(inode->i_mode) && !(befs_ino->i_flags & BEFS_LONG_SYMLINK)){
383 inode->i_blocks = befs_sb->block_size / VFS_BLOCK_SIZE;
384 strncpy(befs_ino->i_data.symlink, raw_inode->data.symlink,
389 befs_ino->i_data.ds =
390 fsds_to_cpu(sb, raw_inode->data.datastream);
392 num_blks = befs_count_blocks(sb, &befs_ino->i_data.ds);
394 num_blks * (befs_sb->block_size / VFS_BLOCK_SIZE);
395 inode->i_size = befs_ino->i_data.ds.size;
398 inode->i_mapping->a_ops = &befs_aops;
400 if (S_ISREG(inode->i_mode)) {
401 inode->i_fop = &befs_file_operations;
402 } else if (S_ISDIR(inode->i_mode)) {
403 inode->i_op = &befs_dir_inode_operations;
404 inode->i_fop = &befs_dir_operations;
405 } else if (S_ISLNK(inode->i_mode)) {
406 inode->i_op = &befs_symlink_inode_operations;
408 befs_error(sb, "Inode %lu is not a regular file, "
409 "directory or symlink. THAT IS WRONG! BeFS has no "
410 "on disk special files", inode->i_ino);
415 befs_debug(sb, "<--- befs_read_inode()");
422 make_bad_inode(inode);
423 befs_debug(sb, "<--- befs_read_inode() - Bad inode");
427 /* Initialize the inode cache. Called at fs setup.
429 * Taken from NFS implementation by Al Viro.
432 befs_init_inodecache(void)
434 befs_inode_cachep = kmem_cache_create("befs_inode_cache",
435 sizeof (struct befs_inode_info),
436 0, SLAB_RECLAIM_ACCOUNT,
438 if (befs_inode_cachep == NULL) {
439 printk(KERN_ERR "befs_init_inodecache: "
440 "Couldn't initalize inode slabcache\n");
447 /* Called at fs teardown.
449 * Taken from NFS implementation by Al Viro.
452 befs_destroy_inodecache(void)
454 if (kmem_cache_destroy(befs_inode_cachep))
455 printk(KERN_ERR "befs_destroy_inodecache: "
456 "not all structures were freed\n");
460 * The inode of symbolic link is different to data stream.
461 * The data stream become link name. Unless the LONG_SYMLINK
465 befs_follow_link(struct dentry *dentry, struct nameidata *nd)
467 befs_inode_info *befs_ino = BEFS_I(dentry->d_inode);
470 if (befs_ino->i_flags & BEFS_LONG_SYMLINK) {
471 struct super_block *sb = dentry->d_sb;
472 befs_data_stream *data = &befs_ino->i_data.ds;
473 befs_off_t len = data->size;
475 befs_debug(sb, "Follow long symlink");
477 link = kmalloc(len, GFP_NOFS);
479 link = ERR_PTR(-ENOMEM);
480 } else if (befs_read_lsymlink(sb, data, link, len) != len) {
482 befs_error(sb, "Failed to read entire long symlink");
483 link = ERR_PTR(-EIO);
486 link = befs_ino->i_data.symlink;
489 nd_set_link(nd, link);
493 static void befs_put_link(struct dentry *dentry, struct nameidata *nd, void *p)
495 befs_inode_info *befs_ino = BEFS_I(dentry->d_inode);
496 if (befs_ino->i_flags & BEFS_LONG_SYMLINK) {
497 char *p = nd_get_link(nd);
504 * UTF-8 to NLS charset convert routine
507 * Changed 8/10/01 by Will Dyson. Now use uni2char() / char2uni() rather than
508 * the nls tables directly
512 befs_utf2nls(struct super_block *sb, const char *in,
513 int in_len, char **out, int *out_len)
515 struct nls_table *nls = BEFS_SB(sb)->nls;
520 int maxlen = in_len; /* The utf8->nls conversion can't make more chars */
522 befs_debug(sb, "---> utf2nls()");
525 befs_error(sb, "befs_utf2nls called with no NLS table loaded");
529 *out = result = kmalloc(maxlen, GFP_NOFS);
531 befs_error(sb, "befs_utf2nls() cannot allocate memory");
536 for (i = o = 0; i < in_len; i += utflen, o += unilen) {
538 /* convert from UTF-8 to Unicode */
539 utflen = utf8_mbtowc(&uni, &in[i], in_len - i);
544 /* convert from Unicode to nls */
545 unilen = nls->uni2char(uni, &result[o], in_len - o);
553 befs_debug(sb, "<--- utf2nls()");
558 befs_error(sb, "Name using character set %s contains a character that "
559 "cannot be converted to unicode.", nls->charset);
560 befs_debug(sb, "<--- utf2nls()");
566 * befs_nls2utf - Convert NLS string to utf8 encodeing
568 * @src: Input string buffer in NLS format
569 * @srclen: Length of input string in bytes
570 * @dest: The output string in UTF8 format
571 * @destlen: Length of the output buffer
573 * Converts input string @src, which is in the format of the loaded NLS map,
574 * into a utf8 string.
576 * The destination string @dest is allocated by this function and the caller is
577 * responsible for freeing it with kfree()
579 * On return, *@destlen is the length of @dest in bytes.
581 * On success, the return value is the number of utf8 characters written to
582 * the output buffer @dest.
584 * On Failure, a negative number coresponding to the error code is returned.
588 befs_nls2utf(struct super_block *sb, const char *in,
589 int in_len, char **out, int *out_len)
591 struct nls_table *nls = BEFS_SB(sb)->nls;
596 int maxlen = 3 * in_len;
598 befs_debug(sb, "---> nls2utf()\n");
601 befs_error(sb, "befs_nls2utf called with no NLS table loaded.");
605 *out = result = kmalloc(maxlen, GFP_NOFS);
607 befs_error(sb, "befs_nls2utf() cannot allocate memory");
612 for (i = o = 0; i < in_len; i += unilen, o += utflen) {
614 /* convert from nls to unicode */
615 unilen = nls->char2uni(&in[i], in_len - i, &uni);
620 /* convert from unicode to UTF-8 */
621 utflen = utf8_wctomb(&result[o], uni, 3);
630 befs_debug(sb, "<--- nls2utf()");
635 befs_error(sb, "Name using charecter set %s contains a charecter that "
636 "cannot be converted to unicode.", nls->charset);
637 befs_debug(sb, "<--- nls2utf()");
647 Opt_uid, Opt_gid, Opt_charset, Opt_debug, Opt_err,
650 static match_table_t befs_tokens = {
653 {Opt_charset, "iocharset=%s"},
654 {Opt_debug, "debug"},
659 parse_options(char *options, befs_mount_options * opts)
662 substring_t args[MAX_OPT_ARGS];
665 /* Initialize options */
670 opts->iocharset = NULL;
676 while ((p = strsep(&options, ",")) != NULL) {
681 token = match_token(p, befs_tokens, args);
684 if (match_int(&args[0], &option))
687 printk(KERN_ERR "BeFS: Invalid uid %d, "
688 "using default\n", option);
695 if (match_int(&args[0], &option))
698 printk(KERN_ERR "BeFS: Invalid gid %d, "
699 "using default\n", option);
706 kfree(opts->iocharset);
707 opts->iocharset = match_strdup(&args[0]);
708 if (!opts->iocharset) {
709 printk(KERN_ERR "BeFS: allocation failure for "
710 "iocharset string\n");
718 printk(KERN_ERR "BeFS: Unrecognized mount option \"%s\" "
719 "or missing value\n", p);
726 /* This function has the responsibiltiy of getting the
727 * filesystem ready for unmounting.
728 * Basicly, we free everything that we allocated in
732 befs_put_super(struct super_block *sb)
734 if (BEFS_SB(sb)->mount_opts.iocharset) {
735 kfree(BEFS_SB(sb)->mount_opts.iocharset);
736 BEFS_SB(sb)->mount_opts.iocharset = NULL;
739 if (BEFS_SB(sb)->nls) {
740 unload_nls(BEFS_SB(sb)->nls);
741 BEFS_SB(sb)->nls = NULL;
745 kfree(sb->s_fs_info);
746 sb->s_fs_info = NULL;
751 /* Allocate private field of the superblock, fill it.
753 * Finish filling the public superblock fields
754 * Make the root directory
755 * Load a set of NLS translations if needed.
758 befs_fill_super(struct super_block *sb, void *data, int silent)
760 struct buffer_head *bh;
761 befs_sb_info *befs_sb;
762 befs_super_block *disk_sb;
765 const unsigned long sb_block = 0;
766 const off_t x86_sb_off = 512;
768 sb->s_fs_info = kmalloc(sizeof (*befs_sb), GFP_KERNEL);
769 if (sb->s_fs_info == NULL) {
771 "BeFS(%s): Unable to allocate memory for private "
772 "portion of superblock. Bailing.\n", sb->s_id);
775 befs_sb = BEFS_SB(sb);
776 memset(befs_sb, 0, sizeof(befs_sb_info));
778 if (!parse_options((char *) data, &befs_sb->mount_opts)) {
779 befs_error(sb, "cannot parse mount options");
780 goto unaquire_priv_sbp;
783 befs_debug(sb, "---> befs_fill_super()");
785 #ifndef CONFIG_BEFS_RW
786 if (!(sb->s_flags & MS_RDONLY)) {
788 "No write support. Marking filesystem read-only");
789 sb->s_flags |= MS_RDONLY;
791 #endif /* CONFIG_BEFS_RW */
794 * Set dummy blocksize to read super block.
795 * Will be set to real fs blocksize later.
797 * Linux 2.4.10 and later refuse to read blocks smaller than
798 * the hardsect size for the device. But we also need to read at
799 * least 1k to get the second 512 bytes of the volume.
802 sb_min_blocksize(sb, 1024);
804 if (!(bh = sb_bread(sb, sb_block))) {
805 befs_error(sb, "unable to read superblock");
806 goto unaquire_priv_sbp;
809 /* account for offset of super block on x86 */
810 disk_sb = (befs_super_block *) bh->b_data;
811 if ((le32_to_cpu(disk_sb->magic1) == BEFS_SUPER_MAGIC1) ||
812 (be32_to_cpu(disk_sb->magic1) == BEFS_SUPER_MAGIC1)) {
813 befs_debug(sb, "Using PPC superblock location");
815 befs_debug(sb, "Using x86 superblock location");
817 (befs_super_block *) ((void *) bh->b_data + x86_sb_off);
820 if (befs_load_sb(sb, disk_sb) != BEFS_OK)
823 befs_dump_super_block(sb, disk_sb);
827 if (befs_check_sb(sb) != BEFS_OK)
828 goto unaquire_priv_sbp;
830 if( befs_sb->num_blocks > ~((sector_t)0) ) {
831 befs_error(sb, "blocks count: %Lu "
832 "is larger than the host can use",
833 befs_sb->num_blocks);
834 goto unaquire_priv_sbp;
838 * set up enough so that it can read an inode
839 * Fill in kernel superblock fields from private sb
841 sb->s_magic = BEFS_SUPER_MAGIC;
842 /* Set real blocksize of fs */
843 sb_set_blocksize(sb, (ulong) befs_sb->block_size);
844 sb->s_op = (struct super_operations *) &befs_sops;
845 root = iget(sb, iaddr2blockno(sb, &(befs_sb->root_dir)));
846 sb->s_root = d_alloc_root(root);
849 befs_error(sb, "get root inode failed");
850 goto unaquire_priv_sbp;
853 /* load nls library */
854 if (befs_sb->mount_opts.iocharset) {
855 befs_debug(sb, "Loading nls: %s",
856 befs_sb->mount_opts.iocharset);
857 befs_sb->nls = load_nls(befs_sb->mount_opts.iocharset);
859 befs_warning(sb, "Cannot load nls %s"
860 " loading default nls",
861 befs_sb->mount_opts.iocharset);
862 befs_sb->nls = load_nls_default();
864 /* load default nls if none is specified in mount options */
866 befs_debug(sb, "Loading default nls");
867 befs_sb->nls = load_nls_default();
876 kfree(sb->s_fs_info);
879 sb->s_fs_info = NULL;
884 befs_remount(struct super_block *sb, int *flags, char *data)
886 if (!(*flags & MS_RDONLY))
892 befs_statfs(struct super_block *sb, struct kstatfs *buf)
895 befs_debug(sb, "---> befs_statfs()");
897 buf->f_type = BEFS_SUPER_MAGIC;
898 buf->f_bsize = sb->s_blocksize;
899 buf->f_blocks = BEFS_SB(sb)->num_blocks;
900 buf->f_bfree = BEFS_SB(sb)->num_blocks - BEFS_SB(sb)->used_blocks;
901 buf->f_bavail = buf->f_bfree;
902 buf->f_files = 0; /* UNKNOWN */
903 buf->f_ffree = 0; /* UNKNOWN */
904 buf->f_namelen = BEFS_NAME_LEN;
906 befs_debug(sb, "<--- befs_statfs()");
911 static struct super_block *
912 befs_get_sb(struct file_system_type *fs_type, int flags, const char *dev_name,
915 return get_sb_bdev(fs_type, flags, dev_name, data, befs_fill_super);
918 static struct file_system_type befs_fs_type = {
919 .owner = THIS_MODULE,
921 .get_sb = befs_get_sb,
922 .kill_sb = kill_block_super,
923 .fs_flags = FS_REQUIRES_DEV,
931 printk(KERN_INFO "BeFS version: %s\n", BEFS_VERSION);
933 err = befs_init_inodecache();
937 err = register_filesystem(&befs_fs_type);
939 goto unaquire_inodecache;
944 befs_destroy_inodecache();
953 befs_destroy_inodecache();
955 unregister_filesystem(&befs_fs_type);
959 Macros that typecheck the init and exit functions,
960 ensures that they are called at init and cleanup,
961 and eliminates warnings about unused functions.
963 module_init(init_befs_fs)
964 module_exit(exit_befs_fs)