| #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_AUTOCLEAR = 4, |
| LO_FLAGS_PARTSCAN = 8, |
| }; |
| |
| #include <asm/posix_types.h> /* for __kernel_old_dev_t */ |
| #include <linux/types.h> /* for __u64 */ |
| |
| /* 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 |
| |
| /* /dev/loop-control interface */ |
| #define LOOP_CTL_ADD 0x4C80 |
| #define LOOP_CTL_REMOVE 0x4C81 |
| #define LOOP_CTL_GET_FREE 0x4C82 |
| #endif |
