Peter Maydell | 884cdc4 | 2016-07-04 17:06:17 +0100 | [diff] [blame] | 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 | */ |
Markus Armbruster | 2a6a407 | 2016-06-29 13:47:03 +0200 | [diff] [blame] | 4 | |
| 5 | #ifndef LINUX_LOOP_H |
| 6 | #define LINUX_LOOP_H |
pbrook | d7e4036 | 2008-05-23 16:06:43 +0000 | [diff] [blame] | 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 |
Peter Maydell | 884cdc4 | 2016-07-04 17:06:17 +0100 | [diff] [blame] | 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 |
pbrook | d7e4036 | 2008-05-23 16:06:43 +0000 | [diff] [blame] | 104 | |
| 105 | #endif |