types.h

linux 内核源代码

/*
 * types.h - Defines for NTFS Linux kernel driver specific types.
 *	     Part of the Linux-NTFS project.
 *
 * Copyright (c) 2001-2005 Anton Altaparmakov
 *
 * 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
 */

#ifndef _LINUX_NTFS_TYPES_H
#define _LINUX_NTFS_TYPES_H

#include <linux/types.h>

typedef __le16 le16;
typedef __le32 le32;
typedef __le64 le64;
typedef __u16 __bitwise sle16;
typedef __u32 __bitwise sle32;
typedef __u64 __bitwise sle64;

/* 2-byte Unicode character type. */
typedef le16 ntfschar;
#define UCHAR_T_SIZE_BITS 1

/*
 * Clusters are signed 64-bit values on NTFS volumes. We define two types, LCN
 * and VCN, to allow for type checking and better code readability.
 */
typedef s64 VCN;
typedef sle64 leVCN;
typedef s64 LCN;
typedef sle64 leLCN;

/*
 * The NTFS journal $LogFile uses log sequence numbers which are signed 64-bit
 * values.  We define our own type LSN, to allow for type checking and better
 * code readability.
 */
typedef s64 LSN;
typedef sle64 leLSN;

/*
 * The NTFS transaction log $UsnJrnl uses usn which are signed 64-bit values.
 * We define our own type USN, to allow for type checking and better code
 * readability.
 */
typedef s64 USN;
typedef sle64 leUSN;

typedef enum {
	CASE_SENSITIVE = 0,
	IGNORE_CASE = 1,
} IGNORE_CASE_BOOL;

#endif /* _LINUX_NTFS_TYPES_H */