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 struct inode *befs_iget(struct super_block *, unsigned long);
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 .alloc_inode = befs_alloc_inode, /* allocate a new inode */
56 .destroy_inode = befs_destroy_inode, /* deallocate an inode */
57 .put_super = befs_put_super, /* uninit super */
58 .statfs = befs_statfs, /* statfs */
59 .remount_fs = befs_remount,
62 /* slab cache for befs_inode_info objects */
63 static struct kmem_cache *befs_inode_cachep;
65 static const struct file_operations befs_dir_operations = {
66 .read = generic_read_dir,
67 .readdir = befs_readdir,
70 static const struct inode_operations befs_dir_inode_operations = {
71 .lookup = befs_lookup,
74 static const struct address_space_operations befs_aops = {
75 .readpage = befs_readpage,
76 .sync_page = block_sync_page,
80 static const struct inode_operations befs_symlink_inode_operations = {
81 .readlink = generic_readlink,
82 .follow_link = befs_follow_link,
83 .put_link = befs_put_link,
87 * Called by generic_file_read() to read a page of data
89 * In turn, simply calls a generic block read function and
90 * passes it the address of befs_get_block, for mapping file
91 * positions to disk blocks.
94 befs_readpage(struct file *file, struct page *page)
96 return block_read_full_page(page, befs_get_block);
100 befs_bmap(struct address_space *mapping, sector_t block)
102 return generic_block_bmap(mapping, block, befs_get_block);
106 * Generic function to map a file position (block) to a
107 * disk offset (passed back in bh_result).
109 * Used by many higher level functions.
111 * Calls befs_fblock2brun() in datastream.c to do the real work.
117 befs_get_block(struct inode *inode, sector_t block,
118 struct buffer_head *bh_result, int create)
120 struct super_block *sb = inode->i_sb;
121 befs_data_stream *ds = &BEFS_I(inode)->i_data.ds;
122 befs_block_run run = BAD_IADDR;
126 befs_debug(sb, "---> befs_get_block() for inode %lu, block %ld",
127 inode->i_ino, block);
130 befs_error(sb, "befs_get_block() was asked for a block "
131 "number less than zero: block %ld in inode %lu",
132 block, inode->i_ino);
137 befs_error(sb, "befs_get_block() was asked to write to "
138 "block %ld in inode %lu", block, inode->i_ino);
142 res = befs_fblock2brun(sb, ds, block, &run);
143 if (res != BEFS_OK) {
145 "<--- befs_get_block() for inode %lu, block "
146 "%ld ERROR", inode->i_ino, block);
150 disk_off = (ulong) iaddr2blockno(sb, &run);
152 map_bh(bh_result, inode->i_sb, disk_off);
154 befs_debug(sb, "<--- befs_get_block() for inode %lu, block %ld, "
155 "disk address %lu", inode->i_ino, block, disk_off);
160 static struct dentry *
161 befs_lookup(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
163 struct inode *inode = NULL;
164 struct super_block *sb = dir->i_sb;
165 befs_data_stream *ds = &BEFS_I(dir)->i_data.ds;
170 const char *name = dentry->d_name.name;
172 befs_debug(sb, "---> befs_lookup() "
173 "name %s inode %ld", dentry->d_name.name, dir->i_ino);
175 /* Convert to UTF-8 */
176 if (BEFS_SB(sb)->nls) {
178 befs_nls2utf(sb, name, strlen(name), &utfname, &utfnamelen);
180 befs_debug(sb, "<--- befs_lookup() ERROR");
183 ret = befs_btree_find(sb, ds, utfname, &offset);
187 ret = befs_btree_find(sb, ds, dentry->d_name.name, &offset);
190 if (ret == BEFS_BT_NOT_FOUND) {
191 befs_debug(sb, "<--- befs_lookup() %s not found",
192 dentry->d_name.name);
193 return ERR_PTR(-ENOENT);
195 } else if (ret != BEFS_OK || offset == 0) {
196 befs_warning(sb, "<--- befs_lookup() Error");
197 return ERR_PTR(-ENODATA);
200 inode = befs_iget(dir->i_sb, (ino_t) offset);
202 return ERR_CAST(inode);
204 d_add(dentry, inode);
206 befs_debug(sb, "<--- befs_lookup()");
212 befs_readdir(struct file *filp, void *dirent, filldir_t filldir)
214 struct inode *inode = filp->f_path.dentry->d_inode;
215 struct super_block *sb = inode->i_sb;
216 befs_data_stream *ds = &BEFS_I(inode)->i_data.ds;
220 unsigned char d_type;
221 char keybuf[BEFS_NAME_LEN + 1];
224 const char *dirname = filp->f_path.dentry->d_name.name;
226 befs_debug(sb, "---> befs_readdir() "
227 "name %s, inode %ld, filp->f_pos %Ld",
228 dirname, inode->i_ino, filp->f_pos);
230 result = befs_btree_read(sb, ds, filp->f_pos, BEFS_NAME_LEN + 1,
231 keybuf, &keysize, &value);
233 if (result == BEFS_ERR) {
234 befs_debug(sb, "<--- befs_readdir() ERROR");
235 befs_error(sb, "IO error reading %s (inode %lu)",
236 dirname, inode->i_ino);
239 } else if (result == BEFS_BT_END) {
240 befs_debug(sb, "<--- befs_readdir() END");
243 } else if (result == BEFS_BT_EMPTY) {
244 befs_debug(sb, "<--- befs_readdir() Empty directory");
251 if (BEFS_SB(sb)->nls) {
253 befs_utf2nls(sb, keybuf, keysize, &nlsname, &nlsnamelen);
255 befs_debug(sb, "<--- befs_readdir() ERROR");
258 result = filldir(dirent, nlsname, nlsnamelen, filp->f_pos,
259 (ino_t) value, d_type);
263 result = filldir(dirent, keybuf, keysize, filp->f_pos,
264 (ino_t) value, d_type);
269 befs_debug(sb, "<--- befs_readdir() filp->f_pos %Ld", filp->f_pos);
274 static struct inode *
275 befs_alloc_inode(struct super_block *sb)
277 struct befs_inode_info *bi;
278 bi = (struct befs_inode_info *)kmem_cache_alloc(befs_inode_cachep,
282 return &bi->vfs_inode;
286 befs_destroy_inode(struct inode *inode)
288 kmem_cache_free(befs_inode_cachep, BEFS_I(inode));
291 static void init_once(struct kmem_cache *cachep, void *foo)
293 struct befs_inode_info *bi = (struct befs_inode_info *) foo;
295 inode_init_once(&bi->vfs_inode);
298 static struct inode *befs_iget(struct super_block *sb, unsigned long ino)
300 struct buffer_head *bh = NULL;
301 befs_inode *raw_inode = NULL;
303 befs_sb_info *befs_sb = BEFS_SB(sb);
304 befs_inode_info *befs_ino = NULL;
308 befs_debug(sb, "---> befs_read_inode() " "inode = %lu", ino);
310 inode = iget_locked(sb, ino);
313 if (!(inode->i_state & I_NEW))
316 befs_ino = BEFS_I(inode);
318 /* convert from vfs's inode number to befs's inode number */
319 befs_ino->i_inode_num = blockno2iaddr(sb, inode->i_ino);
321 befs_debug(sb, " real inode number [%u, %hu, %hu]",
322 befs_ino->i_inode_num.allocation_group,
323 befs_ino->i_inode_num.start, befs_ino->i_inode_num.len);
325 bh = befs_bread(sb, inode->i_ino);
327 befs_error(sb, "unable to read inode block - "
328 "inode = %lu", inode->i_ino);
332 raw_inode = (befs_inode *) bh->b_data;
334 befs_dump_inode(sb, raw_inode);
336 if (befs_check_inode(sb, raw_inode, inode->i_ino) != BEFS_OK) {
337 befs_error(sb, "Bad inode: %lu", inode->i_ino);
341 inode->i_mode = (umode_t) fs32_to_cpu(sb, raw_inode->mode);
344 * set uid and gid. But since current BeOS is single user OS, so
345 * you can change by "uid" or "gid" options.
348 inode->i_uid = befs_sb->mount_opts.use_uid ?
349 befs_sb->mount_opts.uid : (uid_t) fs32_to_cpu(sb, raw_inode->uid);
350 inode->i_gid = befs_sb->mount_opts.use_gid ?
351 befs_sb->mount_opts.gid : (gid_t) fs32_to_cpu(sb, raw_inode->gid);
356 * BEFS's time is 64 bits, but current VFS is 32 bits...
357 * BEFS don't have access time. Nor inode change time. VFS
358 * doesn't have creation time.
359 * Also, the lower 16 bits of the last_modified_time and
360 * create_time are just a counter to help ensure uniqueness
361 * for indexing purposes. (PFD, page 54)
364 inode->i_mtime.tv_sec =
365 fs64_to_cpu(sb, raw_inode->last_modified_time) >> 16;
366 inode->i_mtime.tv_nsec = 0; /* lower 16 bits are not a time */
367 inode->i_ctime = inode->i_mtime;
368 inode->i_atime = inode->i_mtime;
370 befs_ino->i_inode_num = fsrun_to_cpu(sb, raw_inode->inode_num);
371 befs_ino->i_parent = fsrun_to_cpu(sb, raw_inode->parent);
372 befs_ino->i_attribute = fsrun_to_cpu(sb, raw_inode->attributes);
373 befs_ino->i_flags = fs32_to_cpu(sb, raw_inode->flags);
375 if (S_ISLNK(inode->i_mode) && !(befs_ino->i_flags & BEFS_LONG_SYMLINK)){
377 inode->i_blocks = befs_sb->block_size / VFS_BLOCK_SIZE;
378 strncpy(befs_ino->i_data.symlink, raw_inode->data.symlink,
383 befs_ino->i_data.ds =
384 fsds_to_cpu(sb, raw_inode->data.datastream);
386 num_blks = befs_count_blocks(sb, &befs_ino->i_data.ds);
388 num_blks * (befs_sb->block_size / VFS_BLOCK_SIZE);
389 inode->i_size = befs_ino->i_data.ds.size;
392 inode->i_mapping->a_ops = &befs_aops;
394 if (S_ISREG(inode->i_mode)) {
395 inode->i_fop = &generic_ro_fops;
396 } else if (S_ISDIR(inode->i_mode)) {
397 inode->i_op = &befs_dir_inode_operations;
398 inode->i_fop = &befs_dir_operations;
399 } else if (S_ISLNK(inode->i_mode)) {
400 inode->i_op = &befs_symlink_inode_operations;
402 befs_error(sb, "Inode %lu is not a regular file, "
403 "directory or symlink. THAT IS WRONG! BeFS has no "
404 "on disk special files", inode->i_ino);
409 befs_debug(sb, "<--- befs_read_inode()");
410 unlock_new_inode(inode);
418 befs_debug(sb, "<--- befs_read_inode() - Bad inode");
422 /* Initialize the inode cache. Called at fs setup.
424 * Taken from NFS implementation by Al Viro.
427 befs_init_inodecache(void)
429 befs_inode_cachep = kmem_cache_create("befs_inode_cache",
430 sizeof (struct befs_inode_info),
431 0, (SLAB_RECLAIM_ACCOUNT|
434 if (befs_inode_cachep == NULL) {
435 printk(KERN_ERR "befs_init_inodecache: "
436 "Couldn't initalize inode slabcache\n");
443 /* Called at fs teardown.
445 * Taken from NFS implementation by Al Viro.
448 befs_destroy_inodecache(void)
450 kmem_cache_destroy(befs_inode_cachep);
454 * The inode of symbolic link is different to data stream.
455 * The data stream become link name. Unless the LONG_SYMLINK
459 befs_follow_link(struct dentry *dentry, struct nameidata *nd)
461 befs_inode_info *befs_ino = BEFS_I(dentry->d_inode);
464 if (befs_ino->i_flags & BEFS_LONG_SYMLINK) {
465 struct super_block *sb = dentry->d_sb;
466 befs_data_stream *data = &befs_ino->i_data.ds;
467 befs_off_t len = data->size;
469 befs_debug(sb, "Follow long symlink");
471 link = kmalloc(len, GFP_NOFS);
473 link = ERR_PTR(-ENOMEM);
474 } else if (befs_read_lsymlink(sb, data, link, len) != len) {
476 befs_error(sb, "Failed to read entire long symlink");
477 link = ERR_PTR(-EIO);
480 link = befs_ino->i_data.symlink;
483 nd_set_link(nd, link);
487 static void befs_put_link(struct dentry *dentry, struct nameidata *nd, void *p)
489 befs_inode_info *befs_ino = BEFS_I(dentry->d_inode);
490 if (befs_ino->i_flags & BEFS_LONG_SYMLINK) {
491 char *p = nd_get_link(nd);
498 * UTF-8 to NLS charset convert routine
501 * Changed 8/10/01 by Will Dyson. Now use uni2char() / char2uni() rather than
502 * the nls tables directly
506 befs_utf2nls(struct super_block *sb, const char *in,
507 int in_len, char **out, int *out_len)
509 struct nls_table *nls = BEFS_SB(sb)->nls;
514 /* The utf8->nls conversion won't make the final nls string bigger
515 * than the utf one, but if the string is pure ascii they'll have the
516 * same width and an extra char is needed to save the additional \0
518 int maxlen = in_len + 1;
520 befs_debug(sb, "---> utf2nls()");
523 befs_error(sb, "befs_utf2nls called with no NLS table loaded");
527 *out = result = kmalloc(maxlen, GFP_NOFS);
529 befs_error(sb, "befs_utf2nls() cannot allocate memory");
534 for (i = o = 0; i < in_len; i += utflen, o += unilen) {
536 /* convert from UTF-8 to Unicode */
537 utflen = utf8_mbtowc(&uni, &in[i], in_len - i);
542 /* convert from Unicode to nls */
543 unilen = nls->uni2char(uni, &result[o], in_len - o);
551 befs_debug(sb, "<--- utf2nls()");
556 befs_error(sb, "Name using character set %s contains a character that "
557 "cannot be converted to unicode.", nls->charset);
558 befs_debug(sb, "<--- utf2nls()");
564 * befs_nls2utf - Convert NLS string to utf8 encodeing
566 * @src: Input string buffer in NLS format
567 * @srclen: Length of input string in bytes
568 * @dest: The output string in UTF-8 format
569 * @destlen: Length of the output buffer
571 * Converts input string @src, which is in the format of the loaded NLS map,
572 * into a utf8 string.
574 * The destination string @dest is allocated by this function and the caller is
575 * responsible for freeing it with kfree()
577 * On return, *@destlen is the length of @dest in bytes.
579 * On success, the return value is the number of utf8 characters written to
580 * the output buffer @dest.
582 * On Failure, a negative number coresponding to the error code is returned.
586 befs_nls2utf(struct super_block *sb, const char *in,
587 int in_len, char **out, int *out_len)
589 struct nls_table *nls = BEFS_SB(sb)->nls;
594 /* There're nls characters that will translate to 3-chars-wide UTF-8
595 * characters, a additional byte is needed to save the final \0
596 * in special cases */
597 int maxlen = (3 * in_len) + 1;
599 befs_debug(sb, "---> nls2utf()\n");
602 befs_error(sb, "befs_nls2utf called with no NLS table loaded.");
606 *out = result = kmalloc(maxlen, GFP_NOFS);
608 befs_error(sb, "befs_nls2utf() cannot allocate memory");
613 for (i = o = 0; i < in_len; i += unilen, o += utflen) {
615 /* convert from nls to unicode */
616 unilen = nls->char2uni(&in[i], in_len - i, &uni);
621 /* convert from unicode to UTF-8 */
622 utflen = utf8_wctomb(&result[o], uni, 3);
631 befs_debug(sb, "<--- nls2utf()");
636 befs_error(sb, "Name using charecter set %s contains a charecter that "
637 "cannot be converted to unicode.", nls->charset);
638 befs_debug(sb, "<--- nls2utf()");
648 Opt_uid, Opt_gid, Opt_charset, Opt_debug, Opt_err,
651 static match_table_t befs_tokens = {
654 {Opt_charset, "iocharset=%s"},
655 {Opt_debug, "debug"},
660 parse_options(char *options, befs_mount_options * opts)
663 substring_t args[MAX_OPT_ARGS];
666 /* Initialize options */
671 opts->iocharset = NULL;
677 while ((p = strsep(&options, ",")) != NULL) {
682 token = match_token(p, befs_tokens, args);
685 if (match_int(&args[0], &option))
688 printk(KERN_ERR "BeFS: Invalid uid %d, "
689 "using default\n", option);
696 if (match_int(&args[0], &option))
699 printk(KERN_ERR "BeFS: Invalid gid %d, "
700 "using default\n", option);
707 kfree(opts->iocharset);
708 opts->iocharset = match_strdup(&args[0]);
709 if (!opts->iocharset) {
710 printk(KERN_ERR "BeFS: allocation failure for "
711 "iocharset string\n");
719 printk(KERN_ERR "BeFS: Unrecognized mount option \"%s\" "
720 "or missing value\n", p);
727 /* This function has the responsibiltiy of getting the
728 * filesystem ready for unmounting.
729 * Basicly, we free everything that we allocated in
733 befs_put_super(struct super_block *sb)
735 kfree(BEFS_SB(sb)->mount_opts.iocharset);
736 BEFS_SB(sb)->mount_opts.iocharset = NULL;
738 if (BEFS_SB(sb)->nls) {
739 unload_nls(BEFS_SB(sb)->nls);
740 BEFS_SB(sb)->nls = NULL;
743 kfree(sb->s_fs_info);
744 sb->s_fs_info = NULL;
748 /* Allocate private field of the superblock, fill it.
750 * Finish filling the public superblock fields
751 * Make the root directory
752 * Load a set of NLS translations if needed.
755 befs_fill_super(struct super_block *sb, void *data, int silent)
757 struct buffer_head *bh;
758 befs_sb_info *befs_sb;
759 befs_super_block *disk_sb;
763 const unsigned long sb_block = 0;
764 const off_t x86_sb_off = 512;
766 sb->s_fs_info = kmalloc(sizeof (*befs_sb), GFP_KERNEL);
767 if (sb->s_fs_info == NULL) {
769 "BeFS(%s): Unable to allocate memory for private "
770 "portion of superblock. Bailing.\n", sb->s_id);
773 befs_sb = BEFS_SB(sb);
774 memset(befs_sb, 0, sizeof(befs_sb_info));
776 if (!parse_options((char *) data, &befs_sb->mount_opts)) {
777 befs_error(sb, "cannot parse mount options");
778 goto unacquire_priv_sbp;
781 befs_debug(sb, "---> befs_fill_super()");
783 #ifndef CONFIG_BEFS_RW
784 if (!(sb->s_flags & MS_RDONLY)) {
786 "No write support. Marking filesystem read-only");
787 sb->s_flags |= MS_RDONLY;
789 #endif /* CONFIG_BEFS_RW */
792 * Set dummy blocksize to read super block.
793 * Will be set to real fs blocksize later.
795 * Linux 2.4.10 and later refuse to read blocks smaller than
796 * the hardsect size for the device. But we also need to read at
797 * least 1k to get the second 512 bytes of the volume.
800 sb_min_blocksize(sb, 1024);
802 if (!(bh = sb_bread(sb, sb_block))) {
803 befs_error(sb, "unable to read superblock");
804 goto unacquire_priv_sbp;
807 /* account for offset of super block on x86 */
808 disk_sb = (befs_super_block *) bh->b_data;
809 if ((le32_to_cpu(disk_sb->magic1) == BEFS_SUPER_MAGIC1) ||
810 (be32_to_cpu(disk_sb->magic1) == BEFS_SUPER_MAGIC1)) {
811 befs_debug(sb, "Using PPC superblock location");
813 befs_debug(sb, "Using x86 superblock location");
815 (befs_super_block *) ((void *) bh->b_data + x86_sb_off);
818 if (befs_load_sb(sb, disk_sb) != BEFS_OK)
821 befs_dump_super_block(sb, disk_sb);
825 if (befs_check_sb(sb) != BEFS_OK)
826 goto unacquire_priv_sbp;
828 if( befs_sb->num_blocks > ~((sector_t)0) ) {
829 befs_error(sb, "blocks count: %Lu "
830 "is larger than the host can use",
831 befs_sb->num_blocks);
832 goto unacquire_priv_sbp;
836 * set up enough so that it can read an inode
837 * Fill in kernel superblock fields from private sb
839 sb->s_magic = BEFS_SUPER_MAGIC;
840 /* Set real blocksize of fs */
841 sb_set_blocksize(sb, (ulong) befs_sb->block_size);
842 sb->s_op = (struct super_operations *) &befs_sops;
843 root = befs_iget(sb, iaddr2blockno(sb, &(befs_sb->root_dir)));
846 goto unacquire_priv_sbp;
848 sb->s_root = d_alloc_root(root);
851 befs_error(sb, "get root inode failed");
852 goto unacquire_priv_sbp;
855 /* load nls library */
856 if (befs_sb->mount_opts.iocharset) {
857 befs_debug(sb, "Loading nls: %s",
858 befs_sb->mount_opts.iocharset);
859 befs_sb->nls = load_nls(befs_sb->mount_opts.iocharset);
861 befs_warning(sb, "Cannot load nls %s"
862 " loading default nls",
863 befs_sb->mount_opts.iocharset);
864 befs_sb->nls = load_nls_default();
866 /* load default nls if none is specified in mount options */
868 befs_debug(sb, "Loading default nls");
869 befs_sb->nls = load_nls_default();
878 kfree(sb->s_fs_info);
881 sb->s_fs_info = NULL;
886 befs_remount(struct super_block *sb, int *flags, char *data)
888 if (!(*flags & MS_RDONLY))
894 befs_statfs(struct dentry *dentry, struct kstatfs *buf)
896 struct super_block *sb = dentry->d_sb;
898 befs_debug(sb, "---> befs_statfs()");
900 buf->f_type = BEFS_SUPER_MAGIC;
901 buf->f_bsize = sb->s_blocksize;
902 buf->f_blocks = BEFS_SB(sb)->num_blocks;
903 buf->f_bfree = BEFS_SB(sb)->num_blocks - BEFS_SB(sb)->used_blocks;
904 buf->f_bavail = buf->f_bfree;
905 buf->f_files = 0; /* UNKNOWN */
906 buf->f_ffree = 0; /* UNKNOWN */
907 buf->f_namelen = BEFS_NAME_LEN;
909 befs_debug(sb, "<--- befs_statfs()");
915 befs_get_sb(struct file_system_type *fs_type, int flags, const char *dev_name,
916 void *data, struct vfsmount *mnt)
918 return get_sb_bdev(fs_type, flags, dev_name, data, befs_fill_super,
922 static struct file_system_type befs_fs_type = {
923 .owner = THIS_MODULE,
925 .get_sb = befs_get_sb,
926 .kill_sb = kill_block_super,
927 .fs_flags = FS_REQUIRES_DEV,
935 printk(KERN_INFO "BeFS version: %s\n", BEFS_VERSION);
937 err = befs_init_inodecache();
941 err = register_filesystem(&befs_fs_type);
943 goto unacquire_inodecache;
947 unacquire_inodecache:
948 befs_destroy_inodecache();
957 befs_destroy_inodecache();
959 unregister_filesystem(&befs_fs_type);
963 Macros that typecheck the init and exit functions,
964 ensures that they are called at init and cleanup,
965 and eliminates warnings about unused functions.
967 module_init(init_befs_fs)
968 module_exit(exit_befs_fs)