| Jiyong Park | 86c9b08 | 2021-06-04 19:03:48 +0900 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright (C) 2021 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | use bitflags::bitflags; |
| 18 | |
| 19 | // This UAPI is copied and converted from include/uapi/linux/loop.h Note that this module doesn't |
| 20 | // implement all the features introduced in loop(4). Only the features that are required to support |
| 21 | // the `apkdmverity` use cases are implemented. |
| 22 | |
| 23 | pub const LOOP_CONTROL: &str = "/dev/loop-control"; |
| 24 | |
| 25 | pub const LOOP_CTL_GET_FREE: libc::c_ulong = 0x4C82; |
| 26 | pub const LOOP_CONFIGURE: libc::c_ulong = 0x4C0A; |
| 27 | pub const LOOP_CLR_FD: libc::c_ulong = 0x4C01; |
| 28 | |
| 29 | #[repr(C)] |
| 30 | pub struct loop_config { |
| 31 | pub fd: u32, |
| 32 | pub block_size: u32, |
| 33 | pub info: loop_info64, |
| 34 | pub reserved: [u64; 8], |
| 35 | } |
| 36 | |
| 37 | #[repr(C)] |
| 38 | pub struct loop_info64 { |
| 39 | pub lo_device: u64, |
| 40 | pub lo_inode: u64, |
| 41 | pub lo_rdevice: u64, |
| 42 | pub lo_offset: u64, |
| 43 | pub lo_sizelimit: u64, |
| 44 | pub lo_number: u32, |
| 45 | pub lo_encrypt_type: u32, |
| 46 | pub lo_encrypt_key_size: u32, |
| 47 | pub lo_flags: Flag, |
| 48 | pub lo_file_name: [u8; LO_NAME_SIZE], |
| 49 | pub lo_crypt_name: [u8; LO_NAME_SIZE], |
| 50 | pub lo_encrypt_key: [u8; LO_KEY_SIZE], |
| 51 | pub lo_init: [u64; 2], |
| 52 | } |
| 53 | |
| 54 | bitflags! { |
| 55 | pub struct Flag: u32 { |
| 56 | const LO_FLAGS_READ_ONLY = 1 << 0; |
| 57 | const LO_FLAGS_AUTOCLEAR = 1 << 2; |
| 58 | const LO_FLAGS_PARTSCAN = 1 << 3; |
| 59 | const LO_FLAGS_DIRECT_IO = 1 << 4; |
| 60 | } |
| 61 | } |
| 62 | |
| 63 | pub const LO_NAME_SIZE: usize = 64; |
| 64 | pub const LO_KEY_SIZE: usize = 32; |