[qemu.git] / linux-user / linux_loop.h

/* Copied from 2.6.25 kernel headers to avoid problems on older hosts,
 * and subsequently updated to match newer additions to the API.
 */

#ifndef LINUX_LOOP_H
#define LINUX_LOOP_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
 */
enum {
	LO_FLAGS_READ_ONLY	= 1,
	LO_FLAGS_USE_AOPS	= 2,
	LO_FLAGS_AUTOCLEAR	= 4,
};

#include <linux/version.h>
#include <asm/posix_types.h>	/* for __kernel_old_dev_t */
#include <asm/types.h>		/* for __u64 */

#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0) /* This is a guess.  */
#define __kernel_old_dev_t __kernel_dev_t
#endif

/* Backwards compatibility version */
struct loop_info {
	int		   lo_number;		/* ioctl r/o */
	__kernel_old_dev_t lo_device; 		/* ioctl r/o */
	unsigned long	   lo_inode; 		/* ioctl r/o */
	__kernel_old_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];
};

struct loop_info64 {
	__u64		   lo_device;			/* ioctl r/o */
	__u64		   lo_inode;			/* ioctl r/o */
	__u64		   lo_rdevice;			/* ioctl r/o */
	__u64		   lo_offset;
	__u64		   lo_sizelimit;/* bytes, 0 == max available */
	__u32		   lo_number;			/* ioctl r/o */
	__u32		   lo_encrypt_type;
	__u32		   lo_encrypt_key_size;		/* ioctl w/o */
	__u32		   lo_flags;			/* ioctl r/o */
	__u8		   lo_file_name[LO_NAME_SIZE];
	__u8		   lo_crypt_name[LO_NAME_SIZE];
	__u8		   lo_encrypt_key[LO_KEY_SIZE]; /* ioctl w/o */
	__u64		   lo_init[2];
};

/*
 * Loop filter types
 */

#define LO_CRYPT_NONE		0
#define LO_CRYPT_XOR		1
#define LO_CRYPT_DES		2
#define LO_CRYPT_FISH2		3    /* 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 LO_CRYPT_CRYPTOAPI	18
#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
#define LOOP_SET_STATUS64	0x4C04
#define LOOP_GET_STATUS64	0x4C05
#define LOOP_CHANGE_FD		0x4C06
#define LOOP_SET_CAPACITY       0x4C07
#define LOOP_SET_DIRECT_IO      0x4C08

/* /dev/loop-control interface */
#define LOOP_CTL_ADD            0x4C80
#define LOOP_CTL_REMOVE         0x4C81
#define LOOP_CTL_GET_FREE       0x4C82

#endif
Commit	Line	Data
884cdc48 PM	1	/* Copied from 2.6.25 kernel headers to avoid problems on older hosts,
	2	* and subsequently updated to match newer additions to the API.
	3	*/
2a6a4076 MA	4
	5	#ifndef LINUX_LOOP_H
	6	#define LINUX_LOOP_H
d7e4036e PB	7
	8	/*
	9	* include/linux/loop.h
	10	*
	11	* Written by Theodore Ts'o, 3/29/93.
	12	*
	13	* Copyright 1993 by Theodore Ts'o. Redistribution of this file is
	14	* permitted under the GNU General Public License.
	15	*/
	16
	17	#define LO_NAME_SIZE 64
	18	#define LO_KEY_SIZE 32
	19
	20
	21	/*
	22	* Loop flags
	23	*/
	24	enum {
	25	LO_FLAGS_READ_ONLY = 1,
	26	LO_FLAGS_USE_AOPS = 2,
	27	LO_FLAGS_AUTOCLEAR = 4,
	28	};
	29
	30	#include <linux/version.h>
	31	#include <asm/posix_types.h> /* for __kernel_old_dev_t */
	32	#include <asm/types.h> /* for __u64 */
	33
	34	#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0) /* This is a guess. */
	35	#define __kernel_old_dev_t __kernel_dev_t
	36	#endif
	37
	38	/* Backwards compatibility version */
	39	struct loop_info {
	40	int lo_number; /* ioctl r/o */
	41	__kernel_old_dev_t lo_device; /* ioctl r/o */
	42	unsigned long lo_inode; /* ioctl r/o */
	43	__kernel_old_dev_t lo_rdevice; /* ioctl r/o */
	44	int lo_offset;
	45	int lo_encrypt_type;
	46	int lo_encrypt_key_size; /* ioctl w/o */
	47	int lo_flags; /* ioctl r/o */
	48	char lo_name[LO_NAME_SIZE];
	49	unsigned char lo_encrypt_key[LO_KEY_SIZE]; /* ioctl w/o */
	50	unsigned long lo_init[2];
	51	char reserved[4];
	52	};
	53
	54	struct loop_info64 {
	55	__u64 lo_device; /* ioctl r/o */
	56	__u64 lo_inode; /* ioctl r/o */
	57	__u64 lo_rdevice; /* ioctl r/o */
	58	__u64 lo_offset;
	59	__u64 lo_sizelimit;/* bytes, 0 == max available */
	60	__u32 lo_number; /* ioctl r/o */
	61	__u32 lo_encrypt_type;
	62	__u32 lo_encrypt_key_size; /* ioctl w/o */
	63	__u32 lo_flags; /* ioctl r/o */
	64	__u8 lo_file_name[LO_NAME_SIZE];
	65	__u8 lo_crypt_name[LO_NAME_SIZE];
	66	__u8 lo_encrypt_key[LO_KEY_SIZE]; /* ioctl w/o */
	67	__u64 lo_init[2];
	68	};
	69
	70	/*
71	* Loop filter types
72	*/
73
74	#define LO_CRYPT_NONE 0
75	#define LO_CRYPT_XOR 1
76	#define LO_CRYPT_DES 2
77	#define LO_CRYPT_FISH2 3 /* Twofish encryption */
78	#define LO_CRYPT_BLOW 4
79	#define LO_CRYPT_CAST128 5
80	#define LO_CRYPT_IDEA 6
81	#define LO_CRYPT_DUMMY 9
82	#define LO_CRYPT_SKIPJACK 10
83	#define LO_CRYPT_CRYPTOAPI 18
84	#define MAX_LO_CRYPT 20
85
86	/*
87	* IOCTL commands --- we will commandeer 0x4C ('L')
88	*/
89
90	#define LOOP_SET_FD 0x4C00
91	#define LOOP_CLR_FD 0x4C01
92	#define LOOP_SET_STATUS 0x4C02
93	#define LOOP_GET_STATUS 0x4C03
94	#define LOOP_SET_STATUS64 0x4C04
95	#define LOOP_GET_STATUS64 0x4C05
96	#define LOOP_CHANGE_FD 0x4C06
884cdc48 PM	97	#define LOOP_SET_CAPACITY 0x4C07
	98	#define LOOP_SET_DIRECT_IO 0x4C08
	99
	100	/* /dev/loop-control interface */
	101	#define LOOP_CTL_ADD 0x4C80
	102	#define LOOP_CTL_REMOVE 0x4C81
	103	#define LOOP_CTL_GET_FREE 0x4C82
d7e4036e PB	104
d7e4036e PB	105	#endif