LXR qemu/linux-user/linux

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