/*

* super.c - NTFS mounting, unmounting, error handling.

* Part of the Linux-NTFS project.

*

* Copyright (c) Mikulas Patocka (mikulas@artax.karlin.mff.cuni.cz), 1998-1999

*

* This program/include file is free software; you can redistribute it and/or

* modify it under the terms of the GNU General Public License as published

* by the Free Software Foundation; either version 2 of the License, or

* (at your option) any later version.

*

* This program/include file is distributed in the hope that it will be

* useful, but WITHOUT ANY WARRANTY; without even the implied warranty

* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

* GNU General Public License for more details.

*

* You should have received a copy of the GNU General Public License

* along with this program (in the main directory of the Linux-NTFS

* distribution in the file COPYING); if not, write to the Free Software

* Foundation,Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA

*/

#include "ntfs_fn.h"

#include <linux/module.h>

#include <linux/parser.h>

#include <linux/init.h>

#include <linux/statfs.h>

#include <linux/magic.h>

#include <linux/sched.h>

#include <linux/bitmap.h>

#include <linux/slab.h>

/* Mark the filesystem dirty, so that chkdsk checks it when os/2 booted */

static void mark_dirty(struct super_block *s, int remount)

{

if (ntfs_sb(s)->sb_chkdsk && (remount || !(s->s_flags & MS_RDONLY))) {

struct buffer_head *bh;

struct ntfs_spare_block *sb;

if ((sb = ntfs_map_sector(s, 17, &bh, 0))) {

sb->dirty = 1;

sb->old_wrote = 0;

mark_buffer_dirty(bh);

sync_dirty_buffer(bh);

brelse(bh);

}

}

}

/* Mark the filesystem clean (mark it dirty for chkdsk if chkdsk==2 or if there

were errors) */

static void unmark_dirty(struct super_block *s)

{

struct buffer_head *bh;

struct ntfs_spare_block *sb;

if (s->s_flags & MS_RDONLY) return;

sync_blockdev(s->s_bdev);

if ((sb = ntfs_map_sector(s, 17, &bh, 0))) {

sb->dirty = ntfs_sb(s)->sb_chkdsk > 1 - ntfs_sb(s)->sb_was_error;

sb->old_wrote = ntfs_sb(s)->sb_chkdsk >= 2 && !ntfs_sb(s)->sb_was_error;

mark_buffer_dirty(bh);

sync_dirty_buffer(bh);

brelse(bh);

}

}

/* Filesystem error... */

static char err_buf[1024];

void ntfs_error(struct super_block *s, const char *fmt, ...)

{

va_list args;

va_start(args, fmt);

vsnprintf(err_buf, sizeof(err_buf), fmt, args);

va_end(args);

printk("NTFS: filesystem error: %s", err_buf);

if (!ntfs_sb(s)->sb_was_error) {

if (ntfs_sb(s)->sb_err == 2) {

printk("; crashing the system because you wanted it\n");

mark_dirty(s, 0);

panic("NTFS panic");

} else if (ntfs_sb(s)->sb_err == 1) {

if (s->s_flags & MS_RDONLY) printk("; already mounted read-only\n");

else {

printk("; remounting read-only\n");

mark_dirty(s, 0);

s->s_flags |= MS_RDONLY;

}

} else if (s->s_flags & MS_RDONLY) printk("; going on - but anything won't be destroyed because it's read-only\n");

else printk("; corrupted filesystem mounted read/write - your computer will explode within 20 seconds ... but you wanted it so!\n");

} else printk("\n");

ntfs_sb(s)->sb_was_error = 1;

}

/*

* A little trick to detect cycles in many ntfs structures and don't let the

* kernel crash on corrupted filesystem. When first called, set c2 to 0.

*

* BTW. chkdsk doesn't detect cycles correctly. When I had 2 lost directories

* nested each in other, chkdsk locked up happilly.

*/

int ntfs_stop_cycles(struct super_block *s, int key, int *c1, int *c2,

char *msg)

{

if (*c2 && *c1 == key) {

ntfs_error(s, "cycle detected on key %08x in %s", key, msg);

return 1;

}

(*c2)++;

if (!((*c2 - 1) & *c2)) *c1 = key;

return 0;

}

static void ntfs_put_super(struct super_block *s)

{

struct ntfs_sb_info *sbi = ntfs_sb(s);

ntfs_lock(s);

unmark_dirty(s);

ntfs_unlock(s);

kfree(sbi->sb_cp_table);

kfree(sbi->sb_bmp_dir);

s->s_fs_info = NULL;

kfree(sbi);

}

unsigned ntfs_count_one_bitmap(struct super_block *s, secno secno)

{

struct quad_buffer_head qbh;

unsigned long *bits;

unsigned count;

bits = ntfs_map_4sectors(s, secno, &qbh, 0);

if (!bits)

return 0;

count = bitmap_weight(bits, 2048 * BITS_PER_BYTE);

ntfs_brelse4(&qbh);

return count;

}

static unsigned count_bitmaps(struct super_block *s)

{

unsigned n, count, n_bands;

n_bands = (ntfs_sb(s)->sb_fs_size + 0x3fff) >> 14;

count = 0;

for (n = 0; n < COUNT_RD_AHEAD; n++) {

ntfs_prefetch_bitmap(s, n);

}

for (n = 0; n < n_bands; n++) {

ntfs_prefetch_bitmap(s, n + COUNT_RD_AHEAD);

count += ntfs_count_one_bitmap(s, le32_to_cpu(ntfs_sb(s)->sb_bmp_dir[n]));

}

return count;

}

static int ntfs_statfs(struct dentry *dentry, struct kstatfs *buf)

{

struct super_block *s = dentry->d_sb;

struct ntfs_sb_info *sbi = ntfs_sb(s);

u64 id = huge_encode_dev(s->s_bdev->bd_dev);

ntfs_lock(s);

/*if (sbi->sb_n_free == -1) {*/

sbi->sb_n_free = count_bitmaps(s);

sbi->sb_n_free_dnodes = ntfs_count_one_bitmap(s, sbi->sb_dmap);

/*}*/

buf->f_type = s->s_magic;

buf->f_bsize = 512;

buf->f_blocks = sbi->sb_fs_size;

buf->f_bfree = sbi->sb_n_free;

buf->f_bavail = sbi->sb_n_free;

buf->f_files = sbi->sb_dirband_size / 4;

buf->f_ffree = sbi->sb_n_free_dnodes;

buf->f_fsid.val[0] = (u32)id;

buf->f_fsid.val[1] = (u32)(id >> 32);

buf->f_namelen = 254;

ntfs_unlock(s);

return 0;

}

static struct kmem_cache * ntfs_inode_cachep;

static struct inode *ntfs_alloc_inode(struct super_block *sb)

{

struct ntfs_inode_info *ei;

ei = (struct ntfs_inode_info *)kmem_cache_alloc(ntfs_inode_cachep, GFP_NOFS);

if (!ei)

return NULL;

ei->vfs_inode.i_version = 1;

return &ei->vfs_inode;

}

static void ntfs_i_callback(struct rcu_head *head)

{

struct inode *inode = container_of(head, struct inode, i_rcu);

kmem_cache_free(ntfs_inode_cachep, ntfs_i(inode));

}

static void ntfs_destroy_inode(struct inode *inode)

{

call_rcu(&inode->i_rcu, ntfs_i_callback);

}

static void init_once(void *foo)

{

struct ntfs_inode_info *ei = (struct ntfs_inode_info *) foo;

inode_init_once(&ei->vfs_inode);

}

static int init_inodecache(void)

{

ntfs_inode_cachep = kmem_cache_create("ntfs_inode_cache",

sizeof(struct ntfs_inode_info),

0, (SLAB_RECLAIM_ACCOUNT|

SLAB_MEM_SPREAD),

init_once);

if (ntfs_inode_cachep == NULL)

return -ENOMEM;

return 0;

}

static void destroy_inodecache(void)

{

/*

* Make sure all delayed rcu free inodes are flushed before we

* destroy cache.

*/

rcu_barrier();

kmem_cache_destroy(ntfs_inode_cachep);

}

/*

* A tiny parser for option strings, stolen from dosfs.

* Stolen again from read-only ntfs.

* And updated for table-driven option parsing.

*/

enum {

Opt_help, Opt_uid, Opt_gid, Opt_umask, Opt_case_lower, Opt_case_asis,

Opt_check_none, Opt_check_normal, Opt_check_strict,

Opt_err_cont, Opt_err_ro, Opt_err_panic,

Opt_eas_no, Opt_eas_ro, Opt_eas_rw,

Opt_chkdsk_no, Opt_chkdsk_errors, Opt_chkdsk_always,

Opt_timeshift, Opt_err,

};

static const match_table_t tokens = {

{Opt_help, "help"},

{Opt_uid, "uid=%u"},

{Opt_gid, "gid=%u"},

{Opt_umask, "umask=%o"},

{Opt_case_lower, "case=lower"},

{Opt_case_asis, "case=asis"},

{Opt_check_none, "check=none"},

{Opt_check_normal, "check=normal"},

{Opt_check_strict, "check=strict"},

{Opt_err_cont, "errors=continue"},

{Opt_err_ro, "errors=remount-ro"},

{Opt_err_panic, "errors=panic"},

{Opt_eas_no, "eas=no"},

{Opt_eas_ro, "eas=ro"},

{Opt_eas_rw, "eas=rw"},

{Opt_chkdsk_no, "chkdsk=no"},

{Opt_chkdsk_errors, "chkdsk=errors"},

{Opt_chkdsk_always, "chkdsk=always"},

{Opt_timeshift, "timeshift=%d"},

{Opt_err, NULL},

};

static int parse_opts(char *opts, kuid_t *uid, kgid_t *gid, umode_t *umask,

int *lowercase, int *eas, int *chk, int *errs,

int *chkdsk, int *timeshift)

{

char *p;

int option;

if (!opts)

return 1;

/*printk("Parsing opts: '%s'\n",opts);*/

while ((p = strsep(&opts, ",")) != NULL) {

substring_t args[MAX_OPT_ARGS];

int token;

if (!*p)

continue;

token = match_token(p, tokens, args);

switch (token) {

case Opt_help:

return 2;

case Opt_uid:

if (match_int(args, &option))

return 0;

*uid = make_kuid(current_user_ns(), option);

if (!uid_valid(*uid))

return 0;

break;

case Opt_gid:

if (match_int(args, &option))

return 0;

*gid = make_kgid(current_user_ns(), option);

if (!gid_valid(*gid))

return 0;

break;

case Opt_umask:

if (match_octal(args, &option))

return 0;

*umask = option;

break;

case Opt_case_lower:

*lowercase = 1;

break;

case Opt_case_asis:

*lowercase = 0;

break;

case Opt_check_none:

*chk = 0;

break;

case Opt_check_normal:

*chk = 1;

break;

case Opt_check_strict:

*chk = 2;

break;

case Opt_err_cont:

*errs = 0;

break;

case Opt_err_ro:

*errs = 1;

break;

case Opt_err_panic:

*errs = 2;

break;

case Opt_eas_no:

*eas = 0;

break;

case Opt_eas_ro:

*eas = 1;

break;

case Opt_eas_rw:

*eas = 2;

break;

case Opt_chkdsk_no:

*chkdsk = 0;

break;

case Opt_chkdsk_errors:

*chkdsk = 1;

break;

case Opt_chkdsk_always:

*chkdsk = 2;

break;

case Opt_timeshift:

{

int m = 1;

char *rhs = args[0].from;

if (!rhs || !*rhs)

return 0;

if (*rhs == '-') m = -1;

if (*rhs == '+' || *rhs == '-') rhs++;

*timeshift = simple_strtoul(rhs, &rhs, 0) * m;

if (*rhs)

return 0;

break;

}

default:

return 0;

}

}

return 1;

}

static inline void ntfs_help(void)

{

printk("\n\

NTFS filesystem options:\n\

help do not mount and display this text\n\

uid=xxx set uid of files that don't have uid specified in eas\n\

gid=xxx set gid of files that don't have gid specified in eas\n\

umask=xxx set mode of files that don't have mode specified in eas\n\

case=lower lowercase all files\n\

case=asis do not lowercase files (default)\n\

check=none no fs checks - kernel may crash on corrupted filesystem\n\

check=normal do some checks - it should not crash (default)\n\

check=strict do extra time-consuming checks, used for debugging\n\

errors=continue continue on errors\n\

errors=remount-ro remount read-only if errors found (default)\n\

errors=panic panic on errors\n\

chkdsk=no do not mark fs for chkdsking even if there were errors\n\

chkdsk=errors mark fs dirty if errors found (default)\n\

chkdsk=always always mark fs dirty - used for debugging\n\

eas=no ignore extended attributes\n\

eas=ro read but do not write extended attributes\n\

eas=rw r/w eas => enables chmod, chown, mknod, ln -s (default)\n\

timeshift=nnn add nnn seconds to file times\n\

\n");

}

static int ntfs_remount_fs(struct super_block *s, int *flags, char *data)

{

kuid_t uid;

kgid_t gid;

umode_t umask;

int lowercase, eas, chk, errs, chkdsk, timeshift;

int o;

struct ntfs_sb_info *sbi = ntfs_sb(s);

char *new_opts = kstrdup(data, GFP_KERNEL);

*flags |= MS_NOATIME;

ntfs_lock(s);

uid = sbi->sb_uid; gid = sbi->sb_gid;

umask = 0777 & ~sbi->sb_mode;

lowercase = sbi->sb_lowercase;

eas = sbi->sb_eas; chk = sbi->sb_chk; chkdsk = sbi->sb_chkdsk;

errs = sbi->sb_err; timeshift = sbi->sb_timeshift;

if (!(o = parse_opts(data, &uid, &gid, &umask, &lowercase,

&eas, &chk, &errs, &chkdsk, &timeshift))) {

printk("NTFS: bad mount options.\n");

goto out_err;

}

if (o == 2) {

ntfs_help();

goto out_err;

}

if (timeshift != sbi->sb_timeshift) {

printk("NTFS: timeshift can't be changed using remount.\n");

goto out_err;

}

unmark_dirty(s);

sbi->sb_uid = uid; sbi->sb_gid = gid;

sbi->sb_mode = 0777 & ~umask;

sbi->sb_lowercase = lowercase;

sbi->sb_eas = eas; sbi->sb_chk = chk; sbi->sb_chkdsk = chkdsk;

sbi->sb_err = errs; sbi->sb_timeshift = timeshift;

if (!(*flags & MS_RDONLY)) mark_dirty(s, 1);

replace_mount_options(s, new_opts);

ntfs_unlock(s);

return 0;

out_err:

ntfs_unlock(s);

kfree(new_opts);

return -EINVAL;

}

/* Super operations */

static const struct super_operations ntfs_sops =

{

.alloc_inode = ntfs_alloc_inode,

.destroy_inode = ntfs_destroy_inode,

.evict_inode = ntfs_evict_inode,

.put_super = ntfs_put_super,

.statfs = ntfs_statfs,

.remount_fs = ntfs_remount_fs,

.show_options = generic_show_options,

};

static int ntfs_fill_super(struct super_block *s, void *options, int silent)

{

struct buffer_head *bh0, *bh1, *bh2;

struct ntfs_boot_block *bootblock;

struct ntfs_super_block *superblock;

struct ntfs_spare_block *spareblock;

struct ntfs_sb_info *sbi;

struct inode *root;

kuid_t uid;

kgid_t gid;

umode_t umask;

int lowercase, eas, chk, errs, chkdsk, timeshift;

dnode_secno root_dno;

struct ntfs_dirent *de = NULL;

struct quad_buffer_head qbh;

int o;

save_mount_options(s, options);

sbi = kzalloc(sizeof(*sbi), GFP_KERNEL);

if (!sbi) {

return -ENOMEM;

}

s->s_fs_info = sbi;

sbi->sb_bmp_dir = NULL;

sbi->sb_cp_table = NULL;

mutex_init(&sbi->ntfs_mutex);

ntfs_lock(s);

uid = current_uid();

gid = current_gid();

umask = current_umask();

lowercase = 0;

eas = 2;

chk = 1;

errs = 1;

chkdsk = 1;

timeshift = 0;

if (!(o = parse_opts(options, &uid, &gid, &umask, &lowercase,

&eas, &chk, &errs, &chkdsk, &timeshift))) {

printk("NTFS: bad mount options.\n");

goto bail0;

}

if (o==2) {

ntfs_help();

goto bail0;

}

/*sbi->sb_mounting = 1;*/

sb_set_blocksize(s, 512);

sbi->sb_fs_size = -1;

if (!(bootblock = ntfs_map_sector(s, 0, &bh0, 0))) goto bail1;

if (!(superblock = ntfs_map_sector(s, 16, &bh1, 1))) goto bail2;

if (!(spareblock = ntfs_map_sector(s, 17, &bh2, 0))) goto bail3;

/* Check magics */

if (/*le16_to_cpu(bootblock->magic) != BB_MAGIC

||*/ le32_to_cpu(superblock->magic) != SB_MAGIC

|| le32_to_cpu(spareblock->magic) != SP_MAGIC) {

if (!silent) printk("NTFS: Bad magic ... probably not NTFS\n");

goto bail4;

}

/* Check version */

if (!(s->s_flags & MS_RDONLY) &&

superblock->funcversion != 2 && superblock->funcversion != 3) {

printk("NTFS: Bad version %d,%d. Mount readonly to go around\n",

(int)superblock->version, (int)superblock->funcversion);

printk("NTFS: please try recent version of NTFS driver at http://artax.karlin.mff.cuni.cz/~mikulas/vyplody/ntfs/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 = NTFS_SUPER_MAGIC;

s->s_op = &ntfs_sops;

s->s_d_op = &ntfs_dentry_operations;

sbi->sb_root = le32_to_cpu(superblock->root);

sbi->sb_fs_size = le32_to_cpu(superblock->n_sectors);

sbi->sb_bitmaps = le32_to_cpu(superblock->bitmaps);

sbi->sb_dirband_start = le32_to_cpu(superblock->dir_band_start);

sbi->sb_dirband_size = le32_to_cpu(superblock->n_dir_band);

sbi->sb_dmap = le32_to_cpu(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_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;

if (sbi->sb_fs_size >= 0x80000000) {

ntfs_error(s, "invalid size in superblock: %08x",

(unsigned)sbi->sb_fs_size);

goto bail4;

}

/* Load bitmap directory */

if (!(sbi->sb_bmp_dir = ntfs_load_bitmap_directory(s, le32_to_cpu(superblock->bitmaps))))

goto bail4;

/* Check for general fs errors*/

if (spareblock->dirty && !spareblock->old_wrote) {

if (errs == 2) {

printk("NTFS: Improperly stopped, not mounted\n");

goto bail4;

}

ntfs_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("NTFS: Hotfixes not supported here, try chkdsk\n");

mark_dirty(s, 0);

goto bail4;

}

ntfs_error(s, "hotfixes not supported here, try chkdsk");

if (errs == 0) printk("NTFS: Proceeding, but your filesystem will be probably corrupted by this driver...\n");

else printk("NTFS: This driver may read bad files or crash when operating on disk with hotfixes.\n");

}

if (le32_to_cpu(spareblock->n_dnode_spares) != le32_to_cpu(spareblock->n_dnode_spares_free)) {

if (errs >= 2) {

printk("NTFS: Spare dnodes used, try chkdsk\n");

mark_dirty(s, 0);

goto bail4;

}

ntfs_error(s, "warning: spare dnodes used, try chkdsk");

if (errs == 0) printk("NTFS: Proceeding, but your filesystem could be corrupted if you delete files or directories\n");

}

if (chk) {

unsigned a;

if (le32_to_cpu(superblock->dir_band_end) - le32_to_cpu(superblock->dir_band_start) + 1 != le32_to_cpu(superblock->n_dir_band) ||

le32_to_cpu(superblock->dir_band_end) < le32_to_cpu(superblock->dir_band_start) || le32_to_cpu(superblock->n_dir_band) > 0x4000) {

ntfs_error(s, "dir band size mismatch: dir_band_start==%08x, dir_band_end==%08x, n_dir_band==%08x",

le32_to_cpu(superblock->dir_band_start), le32_to_cpu(superblock->dir_band_end), le32_to_cpu(superblock->n_dir_band));

goto bail4;

}

a = sbi->sb_dirband_size;

sbi->sb_dirband_size = 0;

if (ntfs_chk_sectors(s, le32_to_cpu(superblock->dir_band_start), le32_to_cpu(superblock->n_dir_band), "dir_band") ||

ntfs_chk_sectors(s, le32_to_cpu(superblock->dir_band_bitmap), 4, "dir_band_bitmap") ||

ntfs_chk_sectors(s, le32_to_cpu(superblock->bitmaps), 4, "bitmaps")) {

mark_dirty(s, 0);

goto bail4;

}

sbi->sb_dirband_size = a;

} else printk("NTFS: You really don't want any checks? You are crazy...\n");

/* Load code page table */

if (le32_to_cpu(spareblock->n_code_pages))

if (!(sbi->sb_cp_table = ntfs_load_code_page(s, le32_to_cpu(spareblock->code_page_dir))))

printk("NTFS: Warning: code page support is disabled\n");

brelse(bh2);

brelse(bh1);

brelse(bh0);

root = iget_locked(s, sbi->sb_root);

if (!root)

goto bail0;

ntfs_init_inode(root);

ntfs_read_inode(root);

unlock_new_inode(root);

s->s_root = d_make_root(root);

if (!s->s_root)

goto bail0;

/*

* find the root directory's . pointer & finish filling in the inode

*/

root_dno = ntfs_fnode_dno(s, sbi->sb_root);

if (root_dno)

de = map_dirent(root, root_dno, "\001\001", 2, NULL, &qbh);

if (!de)

ntfs_error(s, "unable to find root dir");

else {

root->i_atime.tv_sec = local_to_gmt(s, le32_to_cpu(de->read_date));

root->i_atime.tv_nsec = 0;

root->i_mtime.tv_sec = local_to_gmt(s, le32_to_cpu(de->write_date));

root->i_mtime.tv_nsec = 0;

root->i_ctime.tv_sec = local_to_gmt(s, le32_to_cpu(de->creation_date));

root->i_ctime.tv_nsec = 0;

ntfs_i(root)->i_ea_size = le32_to_cpu(de->ea_size);

ntfs_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;

ntfs_brelse4(&qbh);

}

ntfs_unlock(s);

return 0;

bail4: brelse(bh2);

bail3: brelse(bh1);

bail2: brelse(bh0);

bail1:

bail0:

ntfs_unlock(s);

kfree(sbi->sb_bmp_dir);

kfree(sbi->sb_cp_table);

s->s_fs_info = NULL;

kfree(sbi);

return -EINVAL;

}

static struct dentry *ntfs_mount(struct file_system_type *fs_type,

int flags, const char *dev_name, void *data)

{

return mount_bdev(fs_type, flags, dev_name, data, ntfs_fill_super);

}

static struct file_system_type ntfs_fs_type = {

.owner = THIS_MODULE,

.name = "ntfs",

.mount = ntfs_mount,

.kill_sb = kill_block_super,

.fs_flags = FS_REQUIRES_DEV,

};

MODULE_ALIAS_FS("ntfs");

static int __init init_ntfs_fs(void)

{

int err = init_inodecache();

if (err)

goto out1;

err = register_filesystem(&ntfs_fs_type);

if (err)

goto out;

return 0;

out:

destroy_inodecache();

out1:

return err;

}

static void __exit exit_ntfs_fs(void)

{

unregister_filesystem(&ntfs_fs_type);

destroy_inodecache();

}

module_init(init_ntfs_fs)

module_exit(exit_ntfs_fs)

MODULE_AUTHOR("Mikulas Patocka <mikulas@artax.karlin.mff.cuni.cz>");

MODULE_LICENSE("GPL");