705 lines
18 KiB
C
705 lines
18 KiB
C
/*
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* linux/fs/hpfs/super.c
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*
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* Mikulas Patocka (mikulas@artax.karlin.mff.cuni.cz), 1998-1999
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*
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* mounting, unmounting, error handling
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*/
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#include "hpfs_fn.h"
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#include <linux/module.h>
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#include <linux/parser.h>
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#include <linux/init.h>
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#include <linux/statfs.h>
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/* Mark the filesystem dirty, so that chkdsk checks it when os/2 booted */
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static void mark_dirty(struct super_block *s)
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{
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if (hpfs_sb(s)->sb_chkdsk && !(s->s_flags & MS_RDONLY)) {
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struct buffer_head *bh;
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struct hpfs_spare_block *sb;
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if ((sb = hpfs_map_sector(s, 17, &bh, 0))) {
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sb->dirty = 1;
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sb->old_wrote = 0;
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mark_buffer_dirty(bh);
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brelse(bh);
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}
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}
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}
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/* Mark the filesystem clean (mark it dirty for chkdsk if chkdsk==2 or if there
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were errors) */
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static void unmark_dirty(struct super_block *s)
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{
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struct buffer_head *bh;
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struct hpfs_spare_block *sb;
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if (s->s_flags & MS_RDONLY) return;
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if ((sb = hpfs_map_sector(s, 17, &bh, 0))) {
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sb->dirty = hpfs_sb(s)->sb_chkdsk > 1 - hpfs_sb(s)->sb_was_error;
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sb->old_wrote = hpfs_sb(s)->sb_chkdsk >= 2 && !hpfs_sb(s)->sb_was_error;
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mark_buffer_dirty(bh);
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brelse(bh);
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}
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}
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/* Filesystem error... */
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#define ERR_BUF_SIZE 1024
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void hpfs_error(struct super_block *s, char *m,...)
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{
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char *buf;
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va_list l;
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va_start(l, m);
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if (!(buf = kmalloc(ERR_BUF_SIZE, GFP_KERNEL)))
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printk("HPFS: No memory for error message '%s'\n",m);
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else if (vsprintf(buf, m, l) >= ERR_BUF_SIZE)
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printk("HPFS: Grrrr... Kernel memory corrupted ... going on, but it'll crash very soon :-(\n");
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printk("HPFS: filesystem error: ");
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if (buf) printk("%s", buf);
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else printk("%s\n",m);
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if (!hpfs_sb(s)->sb_was_error) {
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if (hpfs_sb(s)->sb_err == 2) {
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printk("; crashing the system because you wanted it\n");
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mark_dirty(s);
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panic("HPFS panic");
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} else if (hpfs_sb(s)->sb_err == 1) {
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if (s->s_flags & MS_RDONLY) printk("; already mounted read-only\n");
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else {
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printk("; remounting read-only\n");
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mark_dirty(s);
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s->s_flags |= MS_RDONLY;
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}
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} else if (s->s_flags & MS_RDONLY) printk("; going on - but anything won't be destroyed because it's read-only\n");
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else printk("; corrupted filesystem mounted read/write - your computer will explode within 20 seconds ... but you wanted it so!\n");
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} else printk("\n");
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kfree(buf);
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hpfs_sb(s)->sb_was_error = 1;
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}
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/*
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* A little trick to detect cycles in many hpfs structures and don't let the
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* kernel crash on corrupted filesystem. When first called, set c2 to 0.
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*
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* BTW. chkdsk doesn't detect cycles correctly. When I had 2 lost directories
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* nested each in other, chkdsk locked up happilly.
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*/
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int hpfs_stop_cycles(struct super_block *s, int key, int *c1, int *c2,
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char *msg)
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{
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if (*c2 && *c1 == key) {
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hpfs_error(s, "cycle detected on key %08x in %s", key, msg);
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return 1;
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}
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(*c2)++;
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if (!((*c2 - 1) & *c2)) *c1 = key;
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return 0;
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}
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static void hpfs_put_super(struct super_block *s)
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{
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struct hpfs_sb_info *sbi = hpfs_sb(s);
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kfree(sbi->sb_cp_table);
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kfree(sbi->sb_bmp_dir);
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unmark_dirty(s);
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s->s_fs_info = NULL;
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kfree(sbi);
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}
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unsigned hpfs_count_one_bitmap(struct super_block *s, secno secno)
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{
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struct quad_buffer_head qbh;
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unsigned *bits;
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unsigned i, count;
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if (!(bits = hpfs_map_4sectors(s, secno, &qbh, 4))) return 0;
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count = 0;
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for (i = 0; i < 2048 / sizeof(unsigned); i++) {
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unsigned b;
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if (!bits[i]) continue;
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for (b = bits[i]; b; b>>=1) count += b & 1;
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}
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hpfs_brelse4(&qbh);
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return count;
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}
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static unsigned count_bitmaps(struct super_block *s)
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{
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unsigned n, count, n_bands;
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n_bands = (hpfs_sb(s)->sb_fs_size + 0x3fff) >> 14;
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count = 0;
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for (n = 0; n < n_bands; n++)
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count += hpfs_count_one_bitmap(s, hpfs_sb(s)->sb_bmp_dir[n]);
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return count;
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}
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static int hpfs_statfs(struct dentry *dentry, struct kstatfs *buf)
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{
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struct super_block *s = dentry->d_sb;
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struct hpfs_sb_info *sbi = hpfs_sb(s);
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lock_kernel();
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/*if (sbi->sb_n_free == -1) {*/
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sbi->sb_n_free = count_bitmaps(s);
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sbi->sb_n_free_dnodes = hpfs_count_one_bitmap(s, sbi->sb_dmap);
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/*}*/
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buf->f_type = s->s_magic;
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buf->f_bsize = 512;
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buf->f_blocks = sbi->sb_fs_size;
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buf->f_bfree = sbi->sb_n_free;
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buf->f_bavail = sbi->sb_n_free;
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buf->f_files = sbi->sb_dirband_size / 4;
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buf->f_ffree = sbi->sb_n_free_dnodes;
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buf->f_namelen = 254;
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unlock_kernel();
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return 0;
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}
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static kmem_cache_t * hpfs_inode_cachep;
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static struct inode *hpfs_alloc_inode(struct super_block *sb)
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{
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struct hpfs_inode_info *ei;
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ei = (struct hpfs_inode_info *)kmem_cache_alloc(hpfs_inode_cachep, SLAB_NOFS);
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if (!ei)
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return NULL;
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ei->vfs_inode.i_version = 1;
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return &ei->vfs_inode;
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}
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static void hpfs_destroy_inode(struct inode *inode)
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{
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kmem_cache_free(hpfs_inode_cachep, hpfs_i(inode));
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}
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static void init_once(void * foo, kmem_cache_t * cachep, unsigned long flags)
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{
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struct hpfs_inode_info *ei = (struct hpfs_inode_info *) foo;
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if ((flags & (SLAB_CTOR_VERIFY|SLAB_CTOR_CONSTRUCTOR)) ==
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SLAB_CTOR_CONSTRUCTOR) {
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mutex_init(&ei->i_mutex);
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mutex_init(&ei->i_parent_mutex);
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inode_init_once(&ei->vfs_inode);
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}
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}
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static int init_inodecache(void)
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{
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hpfs_inode_cachep = kmem_cache_create("hpfs_inode_cache",
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sizeof(struct hpfs_inode_info),
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0, (SLAB_RECLAIM_ACCOUNT|
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SLAB_MEM_SPREAD),
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init_once, NULL);
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if (hpfs_inode_cachep == NULL)
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return -ENOMEM;
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return 0;
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}
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static void destroy_inodecache(void)
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{
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if (kmem_cache_destroy(hpfs_inode_cachep))
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printk(KERN_INFO "hpfs_inode_cache: not all structures were freed\n");
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}
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/*
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* A tiny parser for option strings, stolen from dosfs.
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* Stolen again from read-only hpfs.
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* And updated for table-driven option parsing.
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*/
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enum {
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Opt_help, Opt_uid, Opt_gid, Opt_umask, Opt_case_lower, Opt_case_asis,
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Opt_conv_binary, Opt_conv_text, Opt_conv_auto,
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Opt_check_none, Opt_check_normal, Opt_check_strict,
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Opt_err_cont, Opt_err_ro, Opt_err_panic,
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Opt_eas_no, Opt_eas_ro, Opt_eas_rw,
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Opt_chkdsk_no, Opt_chkdsk_errors, Opt_chkdsk_always,
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Opt_timeshift, Opt_err,
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};
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static match_table_t tokens = {
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{Opt_help, "help"},
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{Opt_uid, "uid=%u"},
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{Opt_gid, "gid=%u"},
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{Opt_umask, "umask=%o"},
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{Opt_case_lower, "case=lower"},
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{Opt_case_asis, "case=asis"},
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{Opt_conv_binary, "conv=binary"},
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{Opt_conv_text, "conv=text"},
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{Opt_conv_auto, "conv=auto"},
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{Opt_check_none, "check=none"},
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{Opt_check_normal, "check=normal"},
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{Opt_check_strict, "check=strict"},
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{Opt_err_cont, "errors=continue"},
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{Opt_err_ro, "errors=remount-ro"},
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{Opt_err_panic, "errors=panic"},
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{Opt_eas_no, "eas=no"},
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{Opt_eas_ro, "eas=ro"},
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{Opt_eas_rw, "eas=rw"},
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{Opt_chkdsk_no, "chkdsk=no"},
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{Opt_chkdsk_errors, "chkdsk=errors"},
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{Opt_chkdsk_always, "chkdsk=always"},
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{Opt_timeshift, "timeshift=%d"},
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{Opt_err, NULL},
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};
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static int parse_opts(char *opts, uid_t *uid, gid_t *gid, umode_t *umask,
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int *lowercase, int *conv, int *eas, int *chk, int *errs,
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int *chkdsk, int *timeshift)
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{
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char *p;
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int option;
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if (!opts)
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return 1;
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/*printk("Parsing opts: '%s'\n",opts);*/
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while ((p = strsep(&opts, ",")) != NULL) {
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substring_t args[MAX_OPT_ARGS];
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int token;
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if (!*p)
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continue;
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token = match_token(p, tokens, args);
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switch (token) {
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case Opt_help:
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return 2;
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case Opt_uid:
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if (match_int(args, &option))
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return 0;
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*uid = option;
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break;
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case Opt_gid:
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if (match_int(args, &option))
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return 0;
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*gid = option;
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break;
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case Opt_umask:
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if (match_octal(args, &option))
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return 0;
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*umask = option;
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break;
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case Opt_case_lower:
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*lowercase = 1;
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break;
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case Opt_case_asis:
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*lowercase = 0;
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break;
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case Opt_conv_binary:
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*conv = CONV_BINARY;
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break;
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case Opt_conv_text:
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*conv = CONV_TEXT;
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break;
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case Opt_conv_auto:
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*conv = CONV_AUTO;
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break;
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case Opt_check_none:
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*chk = 0;
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break;
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case Opt_check_normal:
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*chk = 1;
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break;
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case Opt_check_strict:
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*chk = 2;
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break;
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case Opt_err_cont:
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*errs = 0;
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break;
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case Opt_err_ro:
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*errs = 1;
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break;
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case Opt_err_panic:
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*errs = 2;
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break;
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case Opt_eas_no:
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*eas = 0;
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break;
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case Opt_eas_ro:
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*eas = 1;
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break;
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case Opt_eas_rw:
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*eas = 2;
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break;
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case Opt_chkdsk_no:
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*chkdsk = 0;
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break;
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case Opt_chkdsk_errors:
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*chkdsk = 1;
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break;
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case Opt_chkdsk_always:
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*chkdsk = 2;
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break;
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case Opt_timeshift:
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{
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int m = 1;
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char *rhs = args[0].from;
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if (!rhs || !*rhs)
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return 0;
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if (*rhs == '-') m = -1;
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if (*rhs == '+' || *rhs == '-') rhs++;
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*timeshift = simple_strtoul(rhs, &rhs, 0) * m;
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if (*rhs)
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return 0;
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break;
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}
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default:
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return 0;
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}
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}
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return 1;
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}
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static inline void hpfs_help(void)
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{
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printk("\n\
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HPFS filesystem options:\n\
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help do not mount and display this text\n\
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uid=xxx set uid of files that don't have uid specified in eas\n\
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gid=xxx set gid of files that don't have gid specified in eas\n\
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umask=xxx set mode of files that don't have mode specified in eas\n\
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case=lower lowercase all files\n\
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case=asis do not lowercase files (default)\n\
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conv=binary do not convert CR/LF -> LF (default)\n\
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conv=auto convert only files with known text extensions\n\
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conv=text convert all files\n\
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check=none no fs checks - kernel may crash on corrupted filesystem\n\
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check=normal do some checks - it should not crash (default)\n\
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check=strict do extra time-consuming checks, used for debugging\n\
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errors=continue continue on errors\n\
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errors=remount-ro remount read-only if errors found (default)\n\
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errors=panic panic on errors\n\
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chkdsk=no do not mark fs for chkdsking even if there were errors\n\
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chkdsk=errors mark fs dirty if errors found (default)\n\
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chkdsk=always always mark fs dirty - used for debugging\n\
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eas=no ignore extended attributes\n\
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eas=ro read but do not write extended attributes\n\
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eas=rw r/w eas => enables chmod, chown, mknod, ln -s (default)\n\
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timeshift=nnn add nnn seconds to file times\n\
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\n");
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}
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static int hpfs_remount_fs(struct super_block *s, int *flags, char *data)
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{
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uid_t uid;
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gid_t gid;
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umode_t umask;
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int lowercase, conv, eas, chk, errs, chkdsk, timeshift;
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int o;
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struct hpfs_sb_info *sbi = hpfs_sb(s);
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*flags |= MS_NOATIME;
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uid = sbi->sb_uid; gid = sbi->sb_gid;
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umask = 0777 & ~sbi->sb_mode;
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lowercase = sbi->sb_lowercase; conv = sbi->sb_conv;
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eas = sbi->sb_eas; chk = sbi->sb_chk; chkdsk = sbi->sb_chkdsk;
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errs = sbi->sb_err; timeshift = sbi->sb_timeshift;
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if (!(o = parse_opts(data, &uid, &gid, &umask, &lowercase, &conv,
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&eas, &chk, &errs, &chkdsk, ×hift))) {
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printk("HPFS: bad mount options.\n");
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return 1;
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}
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if (o == 2) {
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hpfs_help();
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return 1;
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}
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if (timeshift != sbi->sb_timeshift) {
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printk("HPFS: timeshift can't be changed using remount.\n");
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return 1;
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}
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unmark_dirty(s);
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sbi->sb_uid = uid; sbi->sb_gid = gid;
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sbi->sb_mode = 0777 & ~umask;
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sbi->sb_lowercase = lowercase; sbi->sb_conv = conv;
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sbi->sb_eas = eas; sbi->sb_chk = chk; sbi->sb_chkdsk = chkdsk;
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sbi->sb_err = errs; sbi->sb_timeshift = timeshift;
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if (!(*flags & MS_RDONLY)) mark_dirty(s);
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return 0;
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}
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/* Super operations */
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static struct super_operations hpfs_sops =
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{
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.alloc_inode = hpfs_alloc_inode,
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.destroy_inode = hpfs_destroy_inode,
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.delete_inode = hpfs_delete_inode,
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.put_super = hpfs_put_super,
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.statfs = hpfs_statfs,
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.remount_fs = hpfs_remount_fs,
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};
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static int hpfs_fill_super(struct super_block *s, void *options, int silent)
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{
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struct buffer_head *bh0, *bh1, *bh2;
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struct hpfs_boot_block *bootblock;
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struct hpfs_super_block *superblock;
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struct hpfs_spare_block *spareblock;
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struct hpfs_sb_info *sbi;
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struct inode *root;
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uid_t uid;
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gid_t gid;
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umode_t umask;
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int lowercase, conv, eas, chk, errs, chkdsk, timeshift;
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dnode_secno root_dno;
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struct hpfs_dirent *de = NULL;
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struct quad_buffer_head qbh;
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int o;
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sbi = kmalloc(sizeof(*sbi), GFP_KERNEL);
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if (!sbi)
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return -ENOMEM;
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s->s_fs_info = sbi;
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memset(sbi, 0, sizeof(*sbi));
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sbi->sb_bmp_dir = NULL;
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sbi->sb_cp_table = NULL;
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init_MUTEX(&sbi->hpfs_creation_de);
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uid = current->uid;
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gid = current->gid;
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umask = current->fs->umask;
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lowercase = 0;
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conv = CONV_BINARY;
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eas = 2;
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chk = 1;
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errs = 1;
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chkdsk = 1;
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timeshift = 0;
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if (!(o = parse_opts(options, &uid, &gid, &umask, &lowercase, &conv,
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&eas, &chk, &errs, &chkdsk, ×hift))) {
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printk("HPFS: bad mount options.\n");
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goto bail0;
|
|
}
|
|
if (o==2) {
|
|
hpfs_help();
|
|
goto bail0;
|
|
}
|
|
|
|
/*sbi->sb_mounting = 1;*/
|
|
sb_set_blocksize(s, 512);
|
|
sbi->sb_fs_size = -1;
|
|
if (!(bootblock = hpfs_map_sector(s, 0, &bh0, 0))) goto bail1;
|
|
if (!(superblock = hpfs_map_sector(s, 16, &bh1, 1))) goto bail2;
|
|
if (!(spareblock = hpfs_map_sector(s, 17, &bh2, 0))) goto bail3;
|
|
|
|
/* Check magics */
|
|
if (/*bootblock->magic != BB_MAGIC
|
|
||*/ superblock->magic != SB_MAGIC
|
|
|| spareblock->magic != SP_MAGIC) {
|
|
if (!silent) printk("HPFS: Bad magic ... probably not HPFS\n");
|
|
goto bail4;
|
|
}
|
|
|
|
/* Check version */
|
|
if (!(s->s_flags & MS_RDONLY) &&
|
|
superblock->funcversion != 2 && superblock->funcversion != 3) {
|
|
printk("HPFS: Bad version %d,%d. Mount readonly to go around\n",
|
|
(int)superblock->version, (int)superblock->funcversion);
|
|
printk("HPFS: please try recent version of HPFS driver at http://artax.karlin.mff.cuni.cz/~mikulas/vyplody/hpfs/index-e.cgi and if it still can't understand this format, contact author - mikulas@artax.karlin.mff.cuni.cz\n");
|
|
goto bail4;
|
|
}
|
|
|
|
s->s_flags |= MS_NOATIME;
|
|
|
|
/* Fill superblock stuff */
|
|
s->s_magic = HPFS_SUPER_MAGIC;
|
|
s->s_op = &hpfs_sops;
|
|
|
|
sbi->sb_root = superblock->root;
|
|
sbi->sb_fs_size = superblock->n_sectors;
|
|
sbi->sb_bitmaps = superblock->bitmaps;
|
|
sbi->sb_dirband_start = superblock->dir_band_start;
|
|
sbi->sb_dirband_size = superblock->n_dir_band;
|
|
sbi->sb_dmap = superblock->dir_band_bitmap;
|
|
sbi->sb_uid = uid;
|
|
sbi->sb_gid = gid;
|
|
sbi->sb_mode = 0777 & ~umask;
|
|
sbi->sb_n_free = -1;
|
|
sbi->sb_n_free_dnodes = -1;
|
|
sbi->sb_lowercase = lowercase;
|
|
sbi->sb_conv = conv;
|
|
sbi->sb_eas = eas;
|
|
sbi->sb_chk = chk;
|
|
sbi->sb_chkdsk = chkdsk;
|
|
sbi->sb_err = errs;
|
|
sbi->sb_timeshift = timeshift;
|
|
sbi->sb_was_error = 0;
|
|
sbi->sb_cp_table = NULL;
|
|
sbi->sb_c_bitmap = -1;
|
|
sbi->sb_max_fwd_alloc = 0xffffff;
|
|
|
|
/* Load bitmap directory */
|
|
if (!(sbi->sb_bmp_dir = hpfs_load_bitmap_directory(s, superblock->bitmaps)))
|
|
goto bail4;
|
|
|
|
/* Check for general fs errors*/
|
|
if (spareblock->dirty && !spareblock->old_wrote) {
|
|
if (errs == 2) {
|
|
printk("HPFS: Improperly stopped, not mounted\n");
|
|
goto bail4;
|
|
}
|
|
hpfs_error(s, "improperly stopped");
|
|
}
|
|
|
|
if (!(s->s_flags & MS_RDONLY)) {
|
|
spareblock->dirty = 1;
|
|
spareblock->old_wrote = 0;
|
|
mark_buffer_dirty(bh2);
|
|
}
|
|
|
|
if (spareblock->hotfixes_used || spareblock->n_spares_used) {
|
|
if (errs >= 2) {
|
|
printk("HPFS: Hotfixes not supported here, try chkdsk\n");
|
|
mark_dirty(s);
|
|
goto bail4;
|
|
}
|
|
hpfs_error(s, "hotfixes not supported here, try chkdsk");
|
|
if (errs == 0) printk("HPFS: Proceeding, but your filesystem will be probably corrupted by this driver...\n");
|
|
else printk("HPFS: This driver may read bad files or crash when operating on disk with hotfixes.\n");
|
|
}
|
|
if (spareblock->n_dnode_spares != spareblock->n_dnode_spares_free) {
|
|
if (errs >= 2) {
|
|
printk("HPFS: Spare dnodes used, try chkdsk\n");
|
|
mark_dirty(s);
|
|
goto bail4;
|
|
}
|
|
hpfs_error(s, "warning: spare dnodes used, try chkdsk");
|
|
if (errs == 0) printk("HPFS: Proceeding, but your filesystem could be corrupted if you delete files or directories\n");
|
|
}
|
|
if (chk) {
|
|
unsigned a;
|
|
if (superblock->dir_band_end - superblock->dir_band_start + 1 != superblock->n_dir_band ||
|
|
superblock->dir_band_end < superblock->dir_band_start || superblock->n_dir_band > 0x4000) {
|
|
hpfs_error(s, "dir band size mismatch: dir_band_start==%08x, dir_band_end==%08x, n_dir_band==%08x",
|
|
superblock->dir_band_start, superblock->dir_band_end, superblock->n_dir_band);
|
|
goto bail4;
|
|
}
|
|
a = sbi->sb_dirband_size;
|
|
sbi->sb_dirband_size = 0;
|
|
if (hpfs_chk_sectors(s, superblock->dir_band_start, superblock->n_dir_band, "dir_band") ||
|
|
hpfs_chk_sectors(s, superblock->dir_band_bitmap, 4, "dir_band_bitmap") ||
|
|
hpfs_chk_sectors(s, superblock->bitmaps, 4, "bitmaps")) {
|
|
mark_dirty(s);
|
|
goto bail4;
|
|
}
|
|
sbi->sb_dirband_size = a;
|
|
} else printk("HPFS: You really don't want any checks? You are crazy...\n");
|
|
|
|
/* Load code page table */
|
|
if (spareblock->n_code_pages)
|
|
if (!(sbi->sb_cp_table = hpfs_load_code_page(s, spareblock->code_page_dir)))
|
|
printk("HPFS: Warning: code page support is disabled\n");
|
|
|
|
brelse(bh2);
|
|
brelse(bh1);
|
|
brelse(bh0);
|
|
|
|
root = iget_locked(s, sbi->sb_root);
|
|
if (!root)
|
|
goto bail0;
|
|
hpfs_init_inode(root);
|
|
hpfs_read_inode(root);
|
|
unlock_new_inode(root);
|
|
s->s_root = d_alloc_root(root);
|
|
if (!s->s_root) {
|
|
iput(root);
|
|
goto bail0;
|
|
}
|
|
hpfs_set_dentry_operations(s->s_root);
|
|
|
|
/*
|
|
* find the root directory's . pointer & finish filling in the inode
|
|
*/
|
|
|
|
root_dno = hpfs_fnode_dno(s, sbi->sb_root);
|
|
if (root_dno)
|
|
de = map_dirent(root, root_dno, "\001\001", 2, NULL, &qbh);
|
|
if (!de)
|
|
hpfs_error(s, "unable to find root dir");
|
|
else {
|
|
root->i_atime.tv_sec = local_to_gmt(s, de->read_date);
|
|
root->i_atime.tv_nsec = 0;
|
|
root->i_mtime.tv_sec = local_to_gmt(s, de->write_date);
|
|
root->i_mtime.tv_nsec = 0;
|
|
root->i_ctime.tv_sec = local_to_gmt(s, de->creation_date);
|
|
root->i_ctime.tv_nsec = 0;
|
|
hpfs_i(root)->i_ea_size = de->ea_size;
|
|
hpfs_i(root)->i_parent_dir = root->i_ino;
|
|
if (root->i_size == -1)
|
|
root->i_size = 2048;
|
|
if (root->i_blocks == -1)
|
|
root->i_blocks = 5;
|
|
hpfs_brelse4(&qbh);
|
|
}
|
|
return 0;
|
|
|
|
bail4: brelse(bh2);
|
|
bail3: brelse(bh1);
|
|
bail2: brelse(bh0);
|
|
bail1:
|
|
bail0:
|
|
kfree(sbi->sb_bmp_dir);
|
|
kfree(sbi->sb_cp_table);
|
|
s->s_fs_info = NULL;
|
|
kfree(sbi);
|
|
return -EINVAL;
|
|
}
|
|
|
|
static int hpfs_get_sb(struct file_system_type *fs_type,
|
|
int flags, const char *dev_name, void *data, struct vfsmount *mnt)
|
|
{
|
|
return get_sb_bdev(fs_type, flags, dev_name, data, hpfs_fill_super,
|
|
mnt);
|
|
}
|
|
|
|
static struct file_system_type hpfs_fs_type = {
|
|
.owner = THIS_MODULE,
|
|
.name = "hpfs",
|
|
.get_sb = hpfs_get_sb,
|
|
.kill_sb = kill_block_super,
|
|
.fs_flags = FS_REQUIRES_DEV,
|
|
};
|
|
|
|
static int __init init_hpfs_fs(void)
|
|
{
|
|
int err = init_inodecache();
|
|
if (err)
|
|
goto out1;
|
|
err = register_filesystem(&hpfs_fs_type);
|
|
if (err)
|
|
goto out;
|
|
return 0;
|
|
out:
|
|
destroy_inodecache();
|
|
out1:
|
|
return err;
|
|
}
|
|
|
|
static void __exit exit_hpfs_fs(void)
|
|
{
|
|
unregister_filesystem(&hpfs_fs_type);
|
|
destroy_inodecache();
|
|
}
|
|
|
|
module_init(init_hpfs_fs)
|
|
module_exit(exit_hpfs_fs)
|
|
MODULE_LICENSE("GPL");
|