projects / mirror_ubuntu-bionic-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| 607ca46e DH |
1 | /* |
| 2 | * include/linux/loop.h | |
| 3 | * | |
| 4 | * Written by Theodore Ts'o, 3/29/93. | |
| 5 | * | |
| 6 | * Copyright 1993 by Theodore Ts'o. Redistribution of this file is | |
| 7 | * permitted under the GNU General Public License. | |
| 8 | */ | |
| 9 | #ifndef _UAPI_LINUX_LOOP_H | |
| 10 | #define _UAPI_LINUX_LOOP_H | |
| 11 | ||
| 12 | ||
| 13 | #define LO_NAME_SIZE 64 | |
| 14 | #define LO_KEY_SIZE 32 | |
| 15 | ||
| 16 | ||
| 17 | /* | |
| 18 | * Loop flags | |
| 19 | */ | |
| 20 | enum { | |
| 21 | LO_FLAGS_READ_ONLY = 1, | |
| 22 | LO_FLAGS_AUTOCLEAR = 4, | |
| 23 | LO_FLAGS_PARTSCAN = 8, | |
| 24 | }; | |
| 25 | ||
| 26 | #include <asm/posix_types.h> /* for __kernel_old_dev_t */ | |
| 27 | #include <linux/types.h> /* for __u64 */ | |
| 28 | ||
| 29 | /* Backwards compatibility version */ | |
| 30 | struct loop_info { | |
| 31 | int lo_number; /* ioctl r/o */ | |
| 32 | __kernel_old_dev_t lo_device; /* ioctl r/o */ | |
| 33 | unsigned long lo_inode; /* ioctl r/o */ | |
| 34 | __kernel_old_dev_t lo_rdevice; /* ioctl r/o */ | |
| 35 | int lo_offset; | |
| 36 | int lo_encrypt_type; | |
| 37 | int lo_encrypt_key_size; /* ioctl w/o */ | |
| 38 | int lo_flags; /* ioctl r/o */ | |
| 39 | char lo_name[LO_NAME_SIZE]; | |
| 40 | unsigned char lo_encrypt_key[LO_KEY_SIZE]; /* ioctl w/o */ | |
| 41 | unsigned long lo_init[2]; | |
| 42 | char reserved[4]; | |
| 43 | }; | |
| 44 | ||
| 45 | struct loop_info64 { | |
| 46 | __u64 lo_device; /* ioctl r/o */ | |
| 47 | __u64 lo_inode; /* ioctl r/o */ | |
| 48 | __u64 lo_rdevice; /* ioctl r/o */ | |
| 49 | __u64 lo_offset; | |
| 50 | __u64 lo_sizelimit;/* bytes, 0 == max available */ | |
| 51 | __u32 lo_number; /* ioctl r/o */ | |
| 52 | __u32 lo_encrypt_type; | |
| 53 | __u32 lo_encrypt_key_size; /* ioctl w/o */ | |
| 54 | __u32 lo_flags; /* ioctl r/o */ | |
| 55 | __u8 lo_file_name[LO_NAME_SIZE]; | |
| 56 | __u8 lo_crypt_name[LO_NAME_SIZE]; | |
| 57 | __u8 lo_encrypt_key[LO_KEY_SIZE]; /* ioctl w/o */ | |
| 58 | __u64 lo_init[2]; | |
| 59 | }; | |
| 60 | ||
| 61 | /* | |
| 62 | * Loop filter types | |
| 63 | */ | |
| 64 | ||
| 65 | #define LO_CRYPT_NONE 0 | |
| 66 | #define LO_CRYPT_XOR 1 | |
| 67 | #define LO_CRYPT_DES 2 | |
| 68 | #define LO_CRYPT_FISH2 3 /* Twofish encryption */ | |
| 69 | #define LO_CRYPT_BLOW 4 | |
| 70 | #define LO_CRYPT_CAST128 5 | |
| 71 | #define LO_CRYPT_IDEA 6 | |
| 72 | #define LO_CRYPT_DUMMY 9 | |
| 73 | #define LO_CRYPT_SKIPJACK 10 | |
| 74 | #define LO_CRYPT_CRYPTOAPI 18 | |
| 75 | #define MAX_LO_CRYPT 20 | |
| 76 | ||
| 77 | /* | |
| 78 | * IOCTL commands --- we will commandeer 0x4C ('L') | |
| 79 | */ | |
| 80 | ||
| 81 | #define LOOP_SET_FD 0x4C00 | |
| 82 | #define LOOP_CLR_FD 0x4C01 | |
| 83 | #define LOOP_SET_STATUS 0x4C02 | |
| 84 | #define LOOP_GET_STATUS 0x4C03 | |
| 85 | #define LOOP_SET_STATUS64 0x4C04 | |
| 86 | #define LOOP_GET_STATUS64 0x4C05 | |
| 87 | #define LOOP_CHANGE_FD 0x4C06 | |
| 88 | #define LOOP_SET_CAPACITY 0x4C07 | |
| 89 | ||
| 90 | /* /dev/loop-control interface */ | |
| 91 | #define LOOP_CTL_ADD 0x4C80 | |
| 92 | #define LOOP_CTL_REMOVE 0x4C81 | |
| 93 | #define LOOP_CTL_GET_FREE 0x4C82 | |
| 94 | #endif /* _UAPI_LINUX_LOOP_H */ |