1884cdc48SPeter Maydell /* Copied from 2.6.25 kernel headers to avoid problems on older hosts, 2884cdc48SPeter Maydell * and subsequently updated to match newer additions to the API. 3884cdc48SPeter Maydell */ 42a6a4076SMarkus Armbruster 52a6a4076SMarkus Armbruster #ifndef LINUX_LOOP_H 62a6a4076SMarkus Armbruster #define LINUX_LOOP_H 7d7e4036eSpbrook 8d7e4036eSpbrook /* 9d7e4036eSpbrook * include/linux/loop.h 10d7e4036eSpbrook * 11d7e4036eSpbrook * Written by Theodore Ts'o, 3/29/93. 12d7e4036eSpbrook * 13d7e4036eSpbrook * Copyright 1993 by Theodore Ts'o. Redistribution of this file is 14d7e4036eSpbrook * permitted under the GNU General Public License. 15d7e4036eSpbrook */ 16d7e4036eSpbrook 17d7e4036eSpbrook #define LO_NAME_SIZE 64 18d7e4036eSpbrook #define LO_KEY_SIZE 32 19d7e4036eSpbrook 20d7e4036eSpbrook 21d7e4036eSpbrook /* 22d7e4036eSpbrook * Loop flags 23d7e4036eSpbrook */ 24d7e4036eSpbrook enum { 25d7e4036eSpbrook LO_FLAGS_READ_ONLY = 1, 26d7e4036eSpbrook LO_FLAGS_USE_AOPS = 2, 27d7e4036eSpbrook LO_FLAGS_AUTOCLEAR = 4, 28d7e4036eSpbrook }; 29d7e4036eSpbrook 30d7e4036eSpbrook #include <linux/version.h> 31d7e4036eSpbrook #include <asm/posix_types.h> /* for __kernel_old_dev_t */ 32d7e4036eSpbrook #include <asm/types.h> /* for __u64 */ 33d7e4036eSpbrook 34d7e4036eSpbrook #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0) /* This is a guess. */ 35d7e4036eSpbrook #define __kernel_old_dev_t __kernel_dev_t 36d7e4036eSpbrook #endif 37d7e4036eSpbrook 38d7e4036eSpbrook /* Backwards compatibility version */ 39d7e4036eSpbrook struct loop_info { 40d7e4036eSpbrook int lo_number; /* ioctl r/o */ 41d7e4036eSpbrook __kernel_old_dev_t lo_device; /* ioctl r/o */ 42d7e4036eSpbrook unsigned long lo_inode; /* ioctl r/o */ 43d7e4036eSpbrook __kernel_old_dev_t lo_rdevice; /* ioctl r/o */ 44d7e4036eSpbrook int lo_offset; 45d7e4036eSpbrook int lo_encrypt_type; 46d7e4036eSpbrook int lo_encrypt_key_size; /* ioctl w/o */ 47d7e4036eSpbrook int lo_flags; /* ioctl r/o */ 48d7e4036eSpbrook char lo_name[LO_NAME_SIZE]; 49d7e4036eSpbrook unsigned char lo_encrypt_key[LO_KEY_SIZE]; /* ioctl w/o */ 50d7e4036eSpbrook unsigned long lo_init[2]; 51d7e4036eSpbrook char reserved[4]; 52d7e4036eSpbrook }; 53d7e4036eSpbrook 54d7e4036eSpbrook struct loop_info64 { 55d7e4036eSpbrook __u64 lo_device; /* ioctl r/o */ 56d7e4036eSpbrook __u64 lo_inode; /* ioctl r/o */ 57d7e4036eSpbrook __u64 lo_rdevice; /* ioctl r/o */ 58d7e4036eSpbrook __u64 lo_offset; 59d7e4036eSpbrook __u64 lo_sizelimit;/* bytes, 0 == max available */ 60d7e4036eSpbrook __u32 lo_number; /* ioctl r/o */ 61d7e4036eSpbrook __u32 lo_encrypt_type; 62d7e4036eSpbrook __u32 lo_encrypt_key_size; /* ioctl w/o */ 63d7e4036eSpbrook __u32 lo_flags; /* ioctl r/o */ 64d7e4036eSpbrook __u8 lo_file_name[LO_NAME_SIZE]; 65d7e4036eSpbrook __u8 lo_crypt_name[LO_NAME_SIZE]; 66d7e4036eSpbrook __u8 lo_encrypt_key[LO_KEY_SIZE]; /* ioctl w/o */ 67d7e4036eSpbrook __u64 lo_init[2]; 68d7e4036eSpbrook }; 69d7e4036eSpbrook 70d7e4036eSpbrook /* 71d7e4036eSpbrook * Loop filter types 72d7e4036eSpbrook */ 73d7e4036eSpbrook 74d7e4036eSpbrook #define LO_CRYPT_NONE 0 75d7e4036eSpbrook #define LO_CRYPT_XOR 1 76d7e4036eSpbrook #define LO_CRYPT_DES 2 77d7e4036eSpbrook #define LO_CRYPT_FISH2 3 /* Twofish encryption */ 78d7e4036eSpbrook #define LO_CRYPT_BLOW 4 79d7e4036eSpbrook #define LO_CRYPT_CAST128 5 80d7e4036eSpbrook #define LO_CRYPT_IDEA 6 81d7e4036eSpbrook #define LO_CRYPT_DUMMY 9 82d7e4036eSpbrook #define LO_CRYPT_SKIPJACK 10 83d7e4036eSpbrook #define LO_CRYPT_CRYPTOAPI 18 84d7e4036eSpbrook #define MAX_LO_CRYPT 20 85d7e4036eSpbrook 86d7e4036eSpbrook /* 87d7e4036eSpbrook * IOCTL commands --- we will commandeer 0x4C ('L') 88d7e4036eSpbrook */ 89d7e4036eSpbrook 90d7e4036eSpbrook #define LOOP_SET_FD 0x4C00 91d7e4036eSpbrook #define LOOP_CLR_FD 0x4C01 92d7e4036eSpbrook #define LOOP_SET_STATUS 0x4C02 93d7e4036eSpbrook #define LOOP_GET_STATUS 0x4C03 94d7e4036eSpbrook #define LOOP_SET_STATUS64 0x4C04 95d7e4036eSpbrook #define LOOP_GET_STATUS64 0x4C05 96d7e4036eSpbrook #define LOOP_CHANGE_FD 0x4C06 97884cdc48SPeter Maydell #define LOOP_SET_CAPACITY 0x4C07 98884cdc48SPeter Maydell #define LOOP_SET_DIRECT_IO 0x4C08 99*0a761ce3SAndreas Schwab #define LOOP_SET_BLOCK_SIZE 0x4C09 100*0a761ce3SAndreas Schwab #define LOOP_CONFIGURE 0x4C0A 101884cdc48SPeter Maydell 102884cdc48SPeter Maydell /* /dev/loop-control interface */ 103884cdc48SPeter Maydell #define LOOP_CTL_ADD 0x4C80 104884cdc48SPeter Maydell #define LOOP_CTL_REMOVE 0x4C81 105884cdc48SPeter Maydell #define LOOP_CTL_GET_FREE 0x4C82 106d7e4036eSpbrook 107d7e4036eSpbrook #endif 108