|
Server : Apache/2.2.2 (Fedora) System : Linux App1.pathumtani.go.th 2.6.20-1.2320.fc5smp #1 SMP Tue Jun 12 19:40:16 EDT 2007 i686 User : apache ( 48) PHP Version : 5.2.9 Disable Function : NONE Directory : /proc/self/root/usr/include/linux/ |
Upload File : |
#ifndef _LINUX_LOOP_H
#define _LINUX_LOOP_H
#include <linux/kdev_t.h>
/*
* include/linux/loop.h
*
* Written by Theodore Ts'o, 3/29/93.
*
* Copyright 1993 by Theodore Ts'o. Redistribution of this file is
* permitted under the GNU General Public License.
*/
#define LO_NAME_SIZE 64
#define LO_KEY_SIZE 32
/*
* Loop flags
*/
#define LO_FLAGS_DO_BMAP 1
#define LO_FLAGS_READ_ONLY 2
/*
* Note that this structure gets the wrong offsets when directly used
* from a glibc program, because glibc has a 32bit dev_t.
* Prevent people from shooting in their own foot.
*/
#if __GLIBC__ >= 2 && !defined(dev_t)
#error "Wrong dev_t in loop.h"
#endif
/*
* This uses kdev_t because glibc currently has no appropiate
* conversion version for the loop ioctls.
* The situation is very unpleasant
*/
struct loop_info {
int lo_number; /* ioctl r/o */
dev_t lo_device; /* ioctl r/o */
unsigned long lo_inode; /* ioctl r/o */
dev_t lo_rdevice; /* ioctl r/o */
int lo_offset;
int lo_encrypt_type;
int lo_encrypt_key_size; /* ioctl w/o */
int lo_flags; /* ioctl r/o */
char lo_name[LO_NAME_SIZE];
unsigned char lo_encrypt_key[LO_KEY_SIZE]; /* ioctl w/o */
unsigned long lo_init[2];
char reserved[4];
};
/*
* Loop filter types
*/
#define LO_CRYPT_NONE 0
#define LO_CRYPT_XOR 1
#define LO_CRYPT_DES 2
#define LO_CRYPT_FISH2 3 /* Brand new Twofish encryption */
#define LO_CRYPT_BLOW 4
#define LO_CRYPT_CAST128 5
#define LO_CRYPT_IDEA 6
#define LO_CRYPT_DUMMY 9
#define LO_CRYPT_SKIPJACK 10
#define MAX_LO_CRYPT 20
/*
* IOCTL commands --- we will commandeer 0x4C ('L')
*/
#define LOOP_SET_FD 0x4C00
#define LOOP_CLR_FD 0x4C01
#define LOOP_SET_STATUS 0x4C02
#define LOOP_GET_STATUS 0x4C03
#endif