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"
26 MODULE_DESCRIPTION("BeOS File System (BeFS) driver");
27 MODULE_AUTHOR("Will Dyson");
28 MODULE_LICENSE("GPL");
30 /* The units the vfs expects inode->i_blocks to be in */
31 #define VFS_BLOCK_SIZE 512
33 static int befs_readdir(struct file *, void *, filldir_t);
34 static int befs_get_block(struct inode *, sector_t, struct buffer_head *, int);
35 static int befs_readpage(struct file *file, struct page *page);
36 static sector_t befs_bmap(struct address_space *mapping, sector_t block);
37 static struct dentry *befs_lookup(struct inode *, struct dentry *, struct nameidata *);
38 static void befs_read_inode(struct inode *ino);
39 static struct inode *befs_alloc_inode(struct super_block *sb);
40 static void befs_destroy_inode(struct inode *inode);
41 static int befs_init_inodecache(void);
42 static void befs_destroy_inodecache(void);
43 static void *befs_follow_link(struct dentry *, struct nameidata *);
44 static void befs_put_link(struct dentry *, struct nameidata *, void *);
45 static int befs_utf2nls(struct super_block *sb, const char *in, int in_len,
46 char **out, int *out_len);
47 static int befs_nls2utf(struct super_block *sb, const char *in, int in_len,
48 char **out, int *out_len);
49 static void befs_put_super(struct super_block *);
50 static int befs_remount(struct super_block *, int *, char *);
51 static int befs_statfs(struct dentry *, struct kstatfs *);
52 static int parse_options(char *, befs_mount_options *);
54 static const struct super_operations befs_sops = {
55 .read_inode = befs_read_inode, /* initialize & read inode */
56 .alloc_inode = befs_alloc_inode, /* allocate a new inode */
57 .destroy_inode = befs_destroy_inode, /* deallocate an inode */
58 .put_super = befs_put_super, /* uninit super */
59 .statfs = befs_statfs, /* statfs */
60 .remount_fs = befs_remount,
63 /* slab cache for befs_inode_info objects */
64 static struct kmem_cache *befs_inode_cachep;
66 static const struct file_operations befs_dir_operations = {
67 .read = generic_read_dir,
68 .readdir = befs_readdir,
71 static const struct inode_operations befs_dir_inode_operations = {
72 .lookup = befs_lookup,
75 static const struct address_space_operations befs_aops = {
76 .readpage = befs_readpage,
77 .sync_page = block_sync_page,
81 static const struct inode_operations befs_symlink_inode_operations = {
82 .readlink = generic_readlink,
83 .follow_link = befs_follow_link,
84 .put_link = befs_put_link,
88 * Called by generic_file_read() to read a page of data
90 * In turn, simply calls a generic block read function and
91 * passes it the address of befs_get_block, for mapping file
92 * positions to disk blocks.
95 befs_readpage(struct file *file, struct page *page)
97 return block_read_full_page(page, befs_get_block);
101 befs_bmap(struct address_space *mapping, sector_t block)
103 return generic_block_bmap(mapping, block, befs_get_block);
107 * Generic function to map a file position (block) to a
108 * disk offset (passed back in bh_result).
110 * Used by many higher level functions.
112 * Calls befs_fblock2brun() in datastream.c to do the real work.
118 befs_get_block(struct inode *inode, sector_t block,
119 struct buffer_head *bh_result, int create)
121 struct super_block *sb = inode->i_sb;
122 befs_data_stream *ds = &BEFS_I(inode)->i_data.ds;
123 befs_block_run run = BAD_IADDR;
127 befs_debug(sb, "---> befs_get_block() for inode %lu, block %ld",
128 inode->i_ino, block);
131 befs_error(sb, "befs_get_block() was asked for a block "
132 "number less than zero: block %ld in inode %lu",
133 block, inode->i_ino);
138 befs_error(sb, "befs_get_block() was asked to write to "
139 "block %ld in inode %lu", block, inode->i_ino);
143 res = befs_fblock2brun(sb, ds, block, &run);
144 if (res != BEFS_OK) {
146 "<--- befs_get_block() for inode %lu, block "
147 "%ld ERROR", inode->i_ino, block);
151 disk_off = (ulong) iaddr2blockno(sb, &run);
153 map_bh(bh_result, inode->i_sb, disk_off);
155 befs_debug(sb, "<--- befs_get_block() for inode %lu, block %ld, "
156 "disk address %lu", inode->i_ino, block, disk_off);
161 static struct dentry *
162 befs_lookup(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
164 struct inode *inode = NULL;
165 struct super_block *sb = dir->i_sb;
166 befs_data_stream *ds = &BEFS_I(dir)->i_data.ds;
171 const char *name = dentry->d_name.name;
173 befs_debug(sb, "---> befs_lookup() "
174 "name %s inode %ld", dentry->d_name.name, dir->i_ino);
176 /* Convert to UTF-8 */
177 if (BEFS_SB(sb)->nls) {
179 befs_nls2utf(sb, name, strlen(name), &utfname, &utfnamelen);
181 befs_debug(sb, "<--- befs_lookup() ERROR");
184 ret = befs_btree_find(sb, ds, utfname, &offset);
188 ret = befs_btree_find(sb, ds, dentry->d_name.name, &offset);
191 if (ret == BEFS_BT_NOT_FOUND) {
192 befs_debug(sb, "<--- befs_lookup() %s not found",
193 dentry->d_name.name);
194 return ERR_PTR(-ENOENT);
196 } else if (ret != BEFS_OK || offset == 0) {
197 befs_warning(sb, "<--- befs_lookup() Error");
198 return ERR_PTR(-ENODATA);
201 inode = iget(dir->i_sb, (ino_t) offset);
203 return ERR_PTR(-EACCES);
205 d_add(dentry, inode);
207 befs_debug(sb, "<--- befs_lookup()");
213 befs_readdir(struct file *filp, void *dirent, filldir_t filldir)
215 struct inode *inode = filp->f_path.dentry->d_inode;
216 struct super_block *sb = inode->i_sb;
217 befs_data_stream *ds = &BEFS_I(inode)->i_data.ds;
221 unsigned char d_type;
222 char keybuf[BEFS_NAME_LEN + 1];
225 const char *dirname = filp->f_path.dentry->d_name.name;
227 befs_debug(sb, "---> befs_readdir() "
228 "name %s, inode %ld, filp->f_pos %Ld",
229 dirname, inode->i_ino, filp->f_pos);
231 result = befs_btree_read(sb, ds, filp->f_pos, BEFS_NAME_LEN + 1,
232 keybuf, &keysize, &value);
234 if (result == BEFS_ERR) {
235 befs_debug(sb, "<--- befs_readdir() ERROR");
236 befs_error(sb, "IO error reading %s (inode %lu)",
237 dirname, inode->i_ino);
240 } else if (result == BEFS_BT_END) {
241 befs_debug(sb, "<--- befs_readdir() END");
244 } else if (result == BEFS_BT_EMPTY) {
245 befs_debug(sb, "<--- befs_readdir() Empty directory");
252 if (BEFS_SB(sb)->nls) {
254 befs_utf2nls(sb, keybuf, keysize, &nlsname, &nlsnamelen);
256 befs_debug(sb, "<--- befs_readdir() ERROR");
259 result = filldir(dirent, nlsname, nlsnamelen, filp->f_pos,
260 (ino_t) value, d_type);
264 result = filldir(dirent, keybuf, keysize, filp->f_pos,
265 (ino_t) value, d_type);
270 befs_debug(sb, "<--- befs_readdir() filp->f_pos %Ld", filp->f_pos);
275 static struct inode *
276 befs_alloc_inode(struct super_block *sb)
278 struct befs_inode_info *bi;
279 bi = (struct befs_inode_info *)kmem_cache_alloc(befs_inode_cachep,
283 return &bi->vfs_inode;
287 befs_destroy_inode(struct inode *inode)
289 kmem_cache_free(befs_inode_cachep, BEFS_I(inode));
292 static void init_once(void * foo, struct kmem_cache * cachep, unsigned long flags)
294 struct befs_inode_info *bi = (struct befs_inode_info *) foo;
296 if (flags & SLAB_CTOR_CONSTRUCTOR) {
297 inode_init_once(&bi->vfs_inode);
302 befs_read_inode(struct inode *inode)
304 struct buffer_head *bh = NULL;
305 befs_inode *raw_inode = NULL;
307 struct super_block *sb = inode->i_sb;
308 befs_sb_info *befs_sb = BEFS_SB(sb);
309 befs_inode_info *befs_ino = NULL;
311 befs_debug(sb, "---> befs_read_inode() " "inode = %lu", inode->i_ino);
313 befs_ino = BEFS_I(inode);
315 /* convert from vfs's inode number to befs's inode number */
316 befs_ino->i_inode_num = blockno2iaddr(sb, inode->i_ino);
318 befs_debug(sb, " real inode number [%u, %hu, %hu]",
319 befs_ino->i_inode_num.allocation_group,
320 befs_ino->i_inode_num.start, befs_ino->i_inode_num.len);
322 bh = befs_bread(sb, inode->i_ino);
324 befs_error(sb, "unable to read inode block - "
325 "inode = %lu", inode->i_ino);
329 raw_inode = (befs_inode *) bh->b_data;
331 befs_dump_inode(sb, raw_inode);
333 if (befs_check_inode(sb, raw_inode, inode->i_ino) != BEFS_OK) {
334 befs_error(sb, "Bad inode: %lu", inode->i_ino);
338 inode->i_mode = (umode_t) fs32_to_cpu(sb, raw_inode->mode);
341 * set uid and gid. But since current BeOS is single user OS, so
342 * you can change by "uid" or "gid" options.
345 inode->i_uid = befs_sb->mount_opts.use_uid ?
346 befs_sb->mount_opts.uid : (uid_t) fs32_to_cpu(sb, raw_inode->uid);
347 inode->i_gid = befs_sb->mount_opts.use_gid ?
348 befs_sb->mount_opts.gid : (gid_t) fs32_to_cpu(sb, raw_inode->gid);
353 * BEFS's time is 64 bits, but current VFS is 32 bits...
354 * BEFS don't have access time. Nor inode change time. VFS
355 * doesn't have creation time.
356 * Also, the lower 16 bits of the last_modified_time and
357 * create_time are just a counter to help ensure uniqueness
358 * for indexing purposes. (PFD, page 54)
361 inode->i_mtime.tv_sec =
362 fs64_to_cpu(sb, raw_inode->last_modified_time) >> 16;
363 inode->i_mtime.tv_nsec = 0; /* lower 16 bits are not a time */
364 inode->i_ctime = inode->i_mtime;
365 inode->i_atime = inode->i_mtime;
367 befs_ino->i_inode_num = fsrun_to_cpu(sb, raw_inode->inode_num);
368 befs_ino->i_parent = fsrun_to_cpu(sb, raw_inode->parent);
369 befs_ino->i_attribute = fsrun_to_cpu(sb, raw_inode->attributes);
370 befs_ino->i_flags = fs32_to_cpu(sb, raw_inode->flags);
372 if (S_ISLNK(inode->i_mode) && !(befs_ino->i_flags & BEFS_LONG_SYMLINK)){
374 inode->i_blocks = befs_sb->block_size / VFS_BLOCK_SIZE;
375 strncpy(befs_ino->i_data.symlink, raw_inode->data.symlink,
380 befs_ino->i_data.ds =
381 fsds_to_cpu(sb, raw_inode->data.datastream);
383 num_blks = befs_count_blocks(sb, &befs_ino->i_data.ds);
385 num_blks * (befs_sb->block_size / VFS_BLOCK_SIZE);
386 inode->i_size = befs_ino->i_data.ds.size;
389 inode->i_mapping->a_ops = &befs_aops;
391 if (S_ISREG(inode->i_mode)) {
392 inode->i_fop = &generic_ro_fops;
393 } else if (S_ISDIR(inode->i_mode)) {
394 inode->i_op = &befs_dir_inode_operations;
395 inode->i_fop = &befs_dir_operations;
396 } else if (S_ISLNK(inode->i_mode)) {
397 inode->i_op = &befs_symlink_inode_operations;
399 befs_error(sb, "Inode %lu is not a regular file, "
400 "directory or symlink. THAT IS WRONG! BeFS has no "
401 "on disk special files", inode->i_ino);
406 befs_debug(sb, "<--- befs_read_inode()");
413 make_bad_inode(inode);
414 befs_debug(sb, "<--- befs_read_inode() - Bad inode");
418 /* Initialize the inode cache. Called at fs setup.
420 * Taken from NFS implementation by Al Viro.
423 befs_init_inodecache(void)
425 befs_inode_cachep = kmem_cache_create("befs_inode_cache",
426 sizeof (struct befs_inode_info),
427 0, (SLAB_RECLAIM_ACCOUNT|
430 if (befs_inode_cachep == NULL) {
431 printk(KERN_ERR "befs_init_inodecache: "
432 "Couldn't initalize inode slabcache\n");
439 /* Called at fs teardown.
441 * Taken from NFS implementation by Al Viro.
444 befs_destroy_inodecache(void)
446 kmem_cache_destroy(befs_inode_cachep);
450 * The inode of symbolic link is different to data stream.
451 * The data stream become link name. Unless the LONG_SYMLINK
455 befs_follow_link(struct dentry *dentry, struct nameidata *nd)
457 befs_inode_info *befs_ino = BEFS_I(dentry->d_inode);
460 if (befs_ino->i_flags & BEFS_LONG_SYMLINK) {
461 struct super_block *sb = dentry->d_sb;
462 befs_data_stream *data = &befs_ino->i_data.ds;
463 befs_off_t len = data->size;
465 befs_debug(sb, "Follow long symlink");
467 link = kmalloc(len, GFP_NOFS);
469 link = ERR_PTR(-ENOMEM);
470 } else if (befs_read_lsymlink(sb, data, link, len) != len) {
472 befs_error(sb, "Failed to read entire long symlink");
473 link = ERR_PTR(-EIO);
476 link = befs_ino->i_data.symlink;
479 nd_set_link(nd, link);
483 static void befs_put_link(struct dentry *dentry, struct nameidata *nd, void *p)
485 befs_inode_info *befs_ino = BEFS_I(dentry->d_inode);
486 if (befs_ino->i_flags & BEFS_LONG_SYMLINK) {
487 char *p = nd_get_link(nd);
494 * UTF-8 to NLS charset convert routine
497 * Changed 8/10/01 by Will Dyson. Now use uni2char() / char2uni() rather than
498 * the nls tables directly
502 befs_utf2nls(struct super_block *sb, const char *in,
503 int in_len, char **out, int *out_len)
505 struct nls_table *nls = BEFS_SB(sb)->nls;
510 /* The utf8->nls conversion won't make the final nls string bigger
511 * than the utf one, but if the string is pure ascii they'll have the
512 * same width and an extra char is needed to save the additional \0
514 int maxlen = in_len + 1;
516 befs_debug(sb, "---> utf2nls()");
519 befs_error(sb, "befs_utf2nls called with no NLS table loaded");
523 *out = result = kmalloc(maxlen, GFP_NOFS);
525 befs_error(sb, "befs_utf2nls() cannot allocate memory");
530 for (i = o = 0; i < in_len; i += utflen, o += unilen) {
532 /* convert from UTF-8 to Unicode */
533 utflen = utf8_mbtowc(&uni, &in[i], in_len - i);
538 /* convert from Unicode to nls */
539 unilen = nls->uni2char(uni, &result[o], in_len - o);
547 befs_debug(sb, "<--- utf2nls()");
552 befs_error(sb, "Name using character set %s contains a character that "
553 "cannot be converted to unicode.", nls->charset);
554 befs_debug(sb, "<--- utf2nls()");
560 * befs_nls2utf - Convert NLS string to utf8 encodeing
562 * @src: Input string buffer in NLS format
563 * @srclen: Length of input string in bytes
564 * @dest: The output string in UTF-8 format
565 * @destlen: Length of the output buffer
567 * Converts input string @src, which is in the format of the loaded NLS map,
568 * into a utf8 string.
570 * The destination string @dest is allocated by this function and the caller is
571 * responsible for freeing it with kfree()
573 * On return, *@destlen is the length of @dest in bytes.
575 * On success, the return value is the number of utf8 characters written to
576 * the output buffer @dest.
578 * On Failure, a negative number coresponding to the error code is returned.
582 befs_nls2utf(struct super_block *sb, const char *in,
583 int in_len, char **out, int *out_len)
585 struct nls_table *nls = BEFS_SB(sb)->nls;
590 /* There're nls characters that will translate to 3-chars-wide UTF-8
591 * characters, a additional byte is needed to save the final \0
592 * in special cases */
593 int maxlen = (3 * in_len) + 1;
595 befs_debug(sb, "---> nls2utf()\n");
598 befs_error(sb, "befs_nls2utf called with no NLS table loaded.");
602 *out = result = kmalloc(maxlen, GFP_NOFS);
604 befs_error(sb, "befs_nls2utf() cannot allocate memory");
609 for (i = o = 0; i < in_len; i += unilen, o += utflen) {
611 /* convert from nls to unicode */
612 unilen = nls->char2uni(&in[i], in_len - i, &uni);
617 /* convert from unicode to UTF-8 */
618 utflen = utf8_wctomb(&result[o], uni, 3);
627 befs_debug(sb, "<--- nls2utf()");
632 befs_error(sb, "Name using charecter set %s contains a charecter that "
633 "cannot be converted to unicode.", nls->charset);
634 befs_debug(sb, "<--- nls2utf()");
644 Opt_uid, Opt_gid, Opt_charset, Opt_debug, Opt_err,
647 static match_table_t befs_tokens = {
650 {Opt_charset, "iocharset=%s"},
651 {Opt_debug, "debug"},
656 parse_options(char *options, befs_mount_options * opts)
659 substring_t args[MAX_OPT_ARGS];
662 /* Initialize options */
667 opts->iocharset = NULL;
673 while ((p = strsep(&options, ",")) != NULL) {
678 token = match_token(p, befs_tokens, args);
681 if (match_int(&args[0], &option))
684 printk(KERN_ERR "BeFS: Invalid uid %d, "
685 "using default\n", option);
692 if (match_int(&args[0], &option))
695 printk(KERN_ERR "BeFS: Invalid gid %d, "
696 "using default\n", option);
703 kfree(opts->iocharset);
704 opts->iocharset = match_strdup(&args[0]);
705 if (!opts->iocharset) {
706 printk(KERN_ERR "BeFS: allocation failure for "
707 "iocharset string\n");
715 printk(KERN_ERR "BeFS: Unrecognized mount option \"%s\" "
716 "or missing value\n", p);
723 /* This function has the responsibiltiy of getting the
724 * filesystem ready for unmounting.
725 * Basicly, we free everything that we allocated in
729 befs_put_super(struct super_block *sb)
731 kfree(BEFS_SB(sb)->mount_opts.iocharset);
732 BEFS_SB(sb)->mount_opts.iocharset = NULL;
734 if (BEFS_SB(sb)->nls) {
735 unload_nls(BEFS_SB(sb)->nls);
736 BEFS_SB(sb)->nls = NULL;
739 kfree(sb->s_fs_info);
740 sb->s_fs_info = NULL;
744 /* Allocate private field of the superblock, fill it.
746 * Finish filling the public superblock fields
747 * Make the root directory
748 * Load a set of NLS translations if needed.
751 befs_fill_super(struct super_block *sb, void *data, int silent)
753 struct buffer_head *bh;
754 befs_sb_info *befs_sb;
755 befs_super_block *disk_sb;
758 const unsigned long sb_block = 0;
759 const off_t x86_sb_off = 512;
761 sb->s_fs_info = kmalloc(sizeof (*befs_sb), GFP_KERNEL);
762 if (sb->s_fs_info == NULL) {
764 "BeFS(%s): Unable to allocate memory for private "
765 "portion of superblock. Bailing.\n", sb->s_id);
768 befs_sb = BEFS_SB(sb);
769 memset(befs_sb, 0, sizeof(befs_sb_info));
771 if (!parse_options((char *) data, &befs_sb->mount_opts)) {
772 befs_error(sb, "cannot parse mount options");
773 goto unacquire_priv_sbp;
776 befs_debug(sb, "---> befs_fill_super()");
778 #ifndef CONFIG_BEFS_RW
779 if (!(sb->s_flags & MS_RDONLY)) {
781 "No write support. Marking filesystem read-only");
782 sb->s_flags |= MS_RDONLY;
784 #endif /* CONFIG_BEFS_RW */
787 * Set dummy blocksize to read super block.
788 * Will be set to real fs blocksize later.
790 * Linux 2.4.10 and later refuse to read blocks smaller than
791 * the hardsect size for the device. But we also need to read at
792 * least 1k to get the second 512 bytes of the volume.
795 sb_min_blocksize(sb, 1024);
797 if (!(bh = sb_bread(sb, sb_block))) {
798 befs_error(sb, "unable to read superblock");
799 goto unacquire_priv_sbp;
802 /* account for offset of super block on x86 */
803 disk_sb = (befs_super_block *) bh->b_data;
804 if ((le32_to_cpu(disk_sb->magic1) == BEFS_SUPER_MAGIC1) ||
805 (be32_to_cpu(disk_sb->magic1) == BEFS_SUPER_MAGIC1)) {
806 befs_debug(sb, "Using PPC superblock location");
808 befs_debug(sb, "Using x86 superblock location");
810 (befs_super_block *) ((void *) bh->b_data + x86_sb_off);
813 if (befs_load_sb(sb, disk_sb) != BEFS_OK)
816 befs_dump_super_block(sb, disk_sb);
820 if (befs_check_sb(sb) != BEFS_OK)
821 goto unacquire_priv_sbp;
823 if( befs_sb->num_blocks > ~((sector_t)0) ) {
824 befs_error(sb, "blocks count: %Lu "
825 "is larger than the host can use",
826 befs_sb->num_blocks);
827 goto unacquire_priv_sbp;
831 * set up enough so that it can read an inode
832 * Fill in kernel superblock fields from private sb
834 sb->s_magic = BEFS_SUPER_MAGIC;
835 /* Set real blocksize of fs */
836 sb_set_blocksize(sb, (ulong) befs_sb->block_size);
837 sb->s_op = (struct super_operations *) &befs_sops;
838 root = iget(sb, iaddr2blockno(sb, &(befs_sb->root_dir)));
839 sb->s_root = d_alloc_root(root);
842 befs_error(sb, "get root inode failed");
843 goto unacquire_priv_sbp;
846 /* load nls library */
847 if (befs_sb->mount_opts.iocharset) {
848 befs_debug(sb, "Loading nls: %s",
849 befs_sb->mount_opts.iocharset);
850 befs_sb->nls = load_nls(befs_sb->mount_opts.iocharset);
852 befs_warning(sb, "Cannot load nls %s"
853 " loading default nls",
854 befs_sb->mount_opts.iocharset);
855 befs_sb->nls = load_nls_default();
857 /* load default nls if none is specified in mount options */
859 befs_debug(sb, "Loading default nls");
860 befs_sb->nls = load_nls_default();
869 kfree(sb->s_fs_info);
872 sb->s_fs_info = NULL;
877 befs_remount(struct super_block *sb, int *flags, char *data)
879 if (!(*flags & MS_RDONLY))
885 befs_statfs(struct dentry *dentry, struct kstatfs *buf)
887 struct super_block *sb = dentry->d_sb;
889 befs_debug(sb, "---> befs_statfs()");
891 buf->f_type = BEFS_SUPER_MAGIC;
892 buf->f_bsize = sb->s_blocksize;
893 buf->f_blocks = BEFS_SB(sb)->num_blocks;
894 buf->f_bfree = BEFS_SB(sb)->num_blocks - BEFS_SB(sb)->used_blocks;
895 buf->f_bavail = buf->f_bfree;
896 buf->f_files = 0; /* UNKNOWN */
897 buf->f_ffree = 0; /* UNKNOWN */
898 buf->f_namelen = BEFS_NAME_LEN;
900 befs_debug(sb, "<--- befs_statfs()");
906 befs_get_sb(struct file_system_type *fs_type, int flags, const char *dev_name,
907 void *data, struct vfsmount *mnt)
909 return get_sb_bdev(fs_type, flags, dev_name, data, befs_fill_super,
913 static struct file_system_type befs_fs_type = {
914 .owner = THIS_MODULE,
916 .get_sb = befs_get_sb,
917 .kill_sb = kill_block_super,
918 .fs_flags = FS_REQUIRES_DEV,
926 printk(KERN_INFO "BeFS version: %s\n", BEFS_VERSION);
928 err = befs_init_inodecache();
932 err = register_filesystem(&befs_fs_type);
934 goto unacquire_inodecache;
938 unacquire_inodecache:
939 befs_destroy_inodecache();
948 befs_destroy_inodecache();
950 unregister_filesystem(&befs_fs_type);
954 Macros that typecheck the init and exit functions,
955 ensures that they are called at init and cleanup,
956 and eliminates warnings about unused functions.
958 module_init(init_befs_fs)
959 module_exit(exit_befs_fs)