Exemple #1
0
static int ufs_sync_fs(struct super_block *sb, int wait)
{
	struct ufs_sb_private_info * uspi;
	struct ufs_super_block_first * usb1;
	struct ufs_super_block_third * usb3;
	unsigned flags;

	mutex_lock(&UFS_SB(sb)->s_lock);

	UFSD("ENTER\n");

	flags = UFS_SB(sb)->s_flags;
	uspi = UFS_SB(sb)->s_uspi;
	usb1 = ubh_get_usb_first(uspi);
	usb3 = ubh_get_usb_third(uspi);

	usb1->fs_time = cpu_to_fs32(sb, get_seconds());
	if ((flags & UFS_ST_MASK) == UFS_ST_SUN  ||
	    (flags & UFS_ST_MASK) == UFS_ST_SUNOS ||
	    (flags & UFS_ST_MASK) == UFS_ST_SUNx86)
		ufs_set_fs_state(sb, usb1, usb3,
				UFS_FSOK - fs32_to_cpu(sb, usb1->fs_time));
	ufs_put_cstotal(sb);

	UFSD("EXIT\n");
	mutex_unlock(&UFS_SB(sb)->s_lock);

	return 0;
}
Exemple #2
0
static void ufs_write_super(struct super_block *sb)
{
    struct ufs_sb_private_info * uspi;
    struct ufs_super_block_first * usb1;
    struct ufs_super_block_third * usb3;
    unsigned flags;

    lock_kernel();
    UFSD("ENTER\n");
    flags = UFS_SB(sb)->s_flags;
    uspi = UFS_SB(sb)->s_uspi;
    usb1 = ubh_get_usb_first(uspi);
    usb3 = ubh_get_usb_third(uspi);

    if (!(sb->s_flags & MS_RDONLY)) {
        usb1->fs_time = cpu_to_fs32(sb, get_seconds());
        if ((flags & UFS_ST_MASK) == UFS_ST_SUN
                || (flags & UFS_ST_MASK) == UFS_ST_SUNx86)
            ufs_set_fs_state(sb, usb1, usb3,
                             UFS_FSOK - fs32_to_cpu(sb, usb1->fs_time));
        ufs_put_cstotal(sb);
    }
    sb->s_dirt = 0;
    UFSD("EXIT\n");
    unlock_kernel();
}
Exemple #3
0
static int ufs_remount (struct super_block *sb, int *mount_flags, char *data)
{
	struct ufs_sb_private_info * uspi;
	struct ufs_super_block_first * usb1;
	struct ufs_super_block_third * usb3;
	unsigned new_mount_opt, ufstype;
	unsigned flags;

	sync_filesystem(sb);
	mutex_lock(&UFS_SB(sb)->s_lock);
	uspi = UFS_SB(sb)->s_uspi;
	flags = UFS_SB(sb)->s_flags;
	usb1 = ubh_get_usb_first(uspi);
	usb3 = ubh_get_usb_third(uspi);
	
	/*
	 * Allow the "check" option to be passed as a remount option.
	 * It is not possible to change ufstype option during remount
	 */
	ufstype = UFS_SB(sb)->s_mount_opt & UFS_MOUNT_UFSTYPE;
	new_mount_opt = 0;
	ufs_set_opt (new_mount_opt, ONERROR_LOCK);
	if (!ufs_parse_options (data, &new_mount_opt)) {
		mutex_unlock(&UFS_SB(sb)->s_lock);
		return -EINVAL;
	}
	if (!(new_mount_opt & UFS_MOUNT_UFSTYPE)) {
		new_mount_opt |= ufstype;
	} else if ((new_mount_opt & UFS_MOUNT_UFSTYPE) != ufstype) {
		pr_err("ufstype can't be changed during remount\n");
		mutex_unlock(&UFS_SB(sb)->s_lock);
		return -EINVAL;
	}

	if ((*mount_flags & MS_RDONLY) == (sb->s_flags & MS_RDONLY)) {
		UFS_SB(sb)->s_mount_opt = new_mount_opt;
		mutex_unlock(&UFS_SB(sb)->s_lock);
		return 0;
	}
	
	/*
	 * fs was mouted as rw, remounting ro
	 */
	if (*mount_flags & MS_RDONLY) {
		ufs_put_super_internal(sb);
		usb1->fs_time = cpu_to_fs32(sb, get_seconds());
		if ((flags & UFS_ST_MASK) == UFS_ST_SUN
		  || (flags & UFS_ST_MASK) == UFS_ST_SUNOS
		  || (flags & UFS_ST_MASK) == UFS_ST_SUNx86) 
			ufs_set_fs_state(sb, usb1, usb3,
				UFS_FSOK - fs32_to_cpu(sb, usb1->fs_time));
		ubh_mark_buffer_dirty (USPI_UBH(uspi));
		sb->s_flags |= MS_RDONLY;
	} else {
	/*
	 * fs was mounted as ro, remounting rw
	 */
#ifndef CONFIG_UFS_FS_WRITE
		pr_err("ufs was compiled with read-only support, can't be mounted as read-write\n");
		mutex_unlock(&UFS_SB(sb)->s_lock);
		return -EINVAL;
#else
		if (ufstype != UFS_MOUNT_UFSTYPE_SUN && 
		    ufstype != UFS_MOUNT_UFSTYPE_SUNOS &&
		    ufstype != UFS_MOUNT_UFSTYPE_44BSD &&
		    ufstype != UFS_MOUNT_UFSTYPE_SUNx86 &&
		    ufstype != UFS_MOUNT_UFSTYPE_UFS2) {
			pr_err("this ufstype is read-only supported\n");
			mutex_unlock(&UFS_SB(sb)->s_lock);
			return -EINVAL;
		}
		if (!ufs_read_cylinder_structures(sb)) {
			pr_err("failed during remounting\n");
			mutex_unlock(&UFS_SB(sb)->s_lock);
			return -EPERM;
		}
		sb->s_flags &= ~MS_RDONLY;
#endif
	}
	UFS_SB(sb)->s_mount_opt = new_mount_opt;
	mutex_unlock(&UFS_SB(sb)->s_lock);
	return 0;
}