linux-imx

/*

 * super.c - NTFS kernel super block handling. Part of the Linux-NTFS project.

 *

 * Copyright (c) 2001-2012 Anton Altaparmakov and Tuxera Inc.

 * Copyright (c) 2001,2002 Richard Russon

 *

 * 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

 */

#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt

​

#include <linux/stddef.h>

#include <linux/init.h>

#include <linux/slab.h>

#include <linux/string.h>

#include <linux/spinlock.h>

#include <linux/blkdev.h>   /* For bdev_logical_block_size(). */

#include <linux/backing-dev.h>

#include <linux/buffer_head.h>

#include <linux/vfs.h>

#include <linux/moduleparam.h>

#include <linux/bitmap.h>

​

#include "sysctl.h"

#include "logfile.h"

#include "quota.h"

#include "usnjrnl.h"

#include "dir.h"

#include "debug.h"

#include "index.h"

#include "inode.h"

#include "aops.h"

#include "layout.h"

#include "malloc.h"

#include "ntfs.h"

​

/* Number of mounted filesystems which have compression enabled. */

static unsigned long ntfs_nr_compression_users;

​

/* A global default upcase table and a corresponding reference count. */

static ntfschar *default_upcase;

static unsigned long ntfs_nr_upcase_users;

​

/* Error constants/strings used in inode.c::ntfs_show_options(). */

typedef enum {

    /* One of these must be present, default is ON_ERRORS_CONTINUE. */

    ON_ERRORS_PANIC         = 0x01,

    ON_ERRORS_REMOUNT_RO        = 0x02,

    ON_ERRORS_CONTINUE      = 0x04,

    /* Optional, can be combined with any of the above. */

    ON_ERRORS_RECOVER       = 0x10,

} ON_ERRORS_ACTIONS;

​

const option_t on_errors_arr[] = {

    { ON_ERRORS_PANIC,  "panic" },

    { ON_ERRORS_REMOUNT_RO, "remount-ro", },

    { ON_ERRORS_CONTINUE,   "continue", },

    { ON_ERRORS_RECOVER,    "recover" },

    { 0,            NULL }

};

​

/**

 * simple_getbool -

 *

 * Copied from old ntfs driver (which copied from vfat driver).

 */

static int simple_getbool(char *s, bool *setval)

{

    if (s) {

        if (!strcmp(s, "1") || !strcmp(s, "yes") || !strcmp(s, "true"))

            *setval = true;

        else if (!strcmp(s, "0") || !strcmp(s, "no") ||

                            !strcmp(s, "false"))

            *setval = false;

        else

            return 0;

    } else

        *setval = true;

    return 1;

}