linux-user/linux_loop.h

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