Jooyung Han | 21e9b92 | 2021-06-26 04:14:16 +0900 | [diff] [blame] | 1 | // Copyright 2021, The Android Open Source Project |
| 2 | // |
| 3 | // Licensed under the Apache License, Version 2.0 (the "License"); |
| 4 | // you may not use this file except in compliance with the License. |
| 5 | // You may obtain a copy of the License at |
| 6 | // |
| 7 | // http://www.apache.org/licenses/LICENSE-2.0 |
| 8 | // |
| 9 | // Unless required by applicable law or agreed to in writing, software |
| 10 | // distributed under the License is distributed on an "AS IS" BASIS, |
| 11 | // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 12 | // See the License for the specific language governing permissions and |
| 13 | // limitations under the License. |
| 14 | |
| 15 | //! Payload disk image |
| 16 | |
Jooyung Han | 44b02ab | 2021-07-16 03:19:13 +0900 | [diff] [blame] | 17 | use anyhow::{anyhow, Context, Result}; |
Jooyung Han | 21e9b92 | 2021-06-26 04:14:16 +0900 | [diff] [blame] | 18 | use microdroid_metadata::{ApexPayload, ApkPayload, Metadata}; |
| 19 | use microdroid_payload_config::ApexConfig; |
Jooyung Han | 9900f3d | 2021-07-06 10:27:54 +0900 | [diff] [blame] | 20 | use once_cell::sync::OnceCell; |
Jooyung Han | 44b02ab | 2021-07-16 03:19:13 +0900 | [diff] [blame] | 21 | use serde::Deserialize; |
| 22 | use serde_xml_rs::from_reader; |
Jooyung Han | 44b02ab | 2021-07-16 03:19:13 +0900 | [diff] [blame] | 23 | use std::fs::{File, OpenOptions}; |
Jooyung Han | 21e9b92 | 2021-06-26 04:14:16 +0900 | [diff] [blame] | 24 | use std::path::{Path, PathBuf}; |
Jooyung Han | 21e9b92 | 2021-06-26 04:14:16 +0900 | [diff] [blame] | 25 | use vmconfig::{DiskImage, Partition}; |
| 26 | |
Jooyung Han | 44b02ab | 2021-07-16 03:19:13 +0900 | [diff] [blame] | 27 | const APEX_INFO_LIST_PATH: &str = "/apex/apex-info-list.xml"; |
| 28 | |
Jooyung Han | 73bac24 | 2021-07-02 10:25:49 +0900 | [diff] [blame] | 29 | /// Represents the list of APEXes |
Jooyung Han | 44b02ab | 2021-07-16 03:19:13 +0900 | [diff] [blame] | 30 | #[derive(Debug, Deserialize)] |
Jooyung Han | 9900f3d | 2021-07-06 10:27:54 +0900 | [diff] [blame] | 31 | struct ApexInfoList { |
Jooyung Han | 44b02ab | 2021-07-16 03:19:13 +0900 | [diff] [blame] | 32 | #[serde(rename = "apex-info")] |
Jooyung Han | 73bac24 | 2021-07-02 10:25:49 +0900 | [diff] [blame] | 33 | list: Vec<ApexInfo>, |
| 34 | } |
| 35 | |
Jooyung Han | 44b02ab | 2021-07-16 03:19:13 +0900 | [diff] [blame] | 36 | #[derive(Debug, Deserialize)] |
Jooyung Han | 73bac24 | 2021-07-02 10:25:49 +0900 | [diff] [blame] | 37 | struct ApexInfo { |
Jooyung Han | 44b02ab | 2021-07-16 03:19:13 +0900 | [diff] [blame] | 38 | #[serde(rename = "moduleName")] |
Jooyung Han | 73bac24 | 2021-07-02 10:25:49 +0900 | [diff] [blame] | 39 | name: String, |
Jooyung Han | 44b02ab | 2021-07-16 03:19:13 +0900 | [diff] [blame] | 40 | #[serde(rename = "modulePath")] |
Jooyung Han | 73bac24 | 2021-07-02 10:25:49 +0900 | [diff] [blame] | 41 | path: PathBuf, |
| 42 | } |
| 43 | |
| 44 | impl ApexInfoList { |
| 45 | /// Loads ApexInfoList |
Jooyung Han | 9900f3d | 2021-07-06 10:27:54 +0900 | [diff] [blame] | 46 | fn load() -> Result<&'static ApexInfoList> { |
| 47 | static INSTANCE: OnceCell<ApexInfoList> = OnceCell::new(); |
| 48 | INSTANCE.get_or_try_init(|| { |
Jooyung Han | 44b02ab | 2021-07-16 03:19:13 +0900 | [diff] [blame] | 49 | let apex_info_list = File::open(APEX_INFO_LIST_PATH) |
| 50 | .context(format!("Failed to open {}", APEX_INFO_LIST_PATH))?; |
| 51 | let apex_info_list: ApexInfoList = from_reader(apex_info_list) |
| 52 | .context(format!("Failed to parse {}", APEX_INFO_LIST_PATH))?; |
| 53 | Ok(apex_info_list) |
Jooyung Han | 9900f3d | 2021-07-06 10:27:54 +0900 | [diff] [blame] | 54 | }) |
Jooyung Han | 73bac24 | 2021-07-02 10:25:49 +0900 | [diff] [blame] | 55 | } |
| 56 | |
| 57 | fn get_path_for(&self, apex_name: &str) -> Result<PathBuf> { |
| 58 | Ok(self |
| 59 | .list |
| 60 | .iter() |
| 61 | .find(|apex| apex.name == apex_name) |
| 62 | .ok_or_else(|| anyhow!("{} not found.", apex_name))? |
| 63 | .path |
| 64 | .clone()) |
| 65 | } |
Jooyung Han | 21e9b92 | 2021-06-26 04:14:16 +0900 | [diff] [blame] | 66 | } |
| 67 | |
Jooyung Han | 21e9b92 | 2021-06-26 04:14:16 +0900 | [diff] [blame] | 68 | /// Creates a DiskImage with partitions: |
| 69 | /// metadata: metadata |
Jooyung Han | 9588463 | 2021-07-06 22:27:54 +0900 | [diff] [blame^] | 70 | /// microdroid-apex-0: apex 0 |
| 71 | /// microdroid-apex-1: apex 1 |
Jooyung Han | 21e9b92 | 2021-06-26 04:14:16 +0900 | [diff] [blame] | 72 | /// .. |
Jooyung Han | 9588463 | 2021-07-06 22:27:54 +0900 | [diff] [blame^] | 73 | /// microdroid-apk: apk |
Jooyung Han | 21e9b92 | 2021-06-26 04:14:16 +0900 | [diff] [blame] | 74 | /// microdroid-apk-idsig: idsig |
Jooyung Han | 73bac24 | 2021-07-02 10:25:49 +0900 | [diff] [blame] | 75 | pub fn make_payload_disk( |
Jooyung Han | 21e9b92 | 2021-06-26 04:14:16 +0900 | [diff] [blame] | 76 | apk_file: PathBuf, |
| 77 | idsig_file: PathBuf, |
| 78 | config_path: &str, |
| 79 | apexes: &[ApexConfig], |
| 80 | temporary_directory: &Path, |
| 81 | ) -> Result<DiskImage> { |
| 82 | let metadata_path = temporary_directory.join("metadata"); |
| 83 | let metadata = Metadata { |
| 84 | version: 1u32, |
| 85 | apexes: apexes |
| 86 | .iter() |
Jooyung Han | 35edb8f | 2021-07-01 16:17:16 +0900 | [diff] [blame] | 87 | .map(|apex| ApexPayload { name: apex.name.clone(), ..Default::default() }) |
Jooyung Han | 21e9b92 | 2021-06-26 04:14:16 +0900 | [diff] [blame] | 88 | .collect(), |
| 89 | apk: Some(ApkPayload { |
Jooyung Han | 35edb8f | 2021-07-01 16:17:16 +0900 | [diff] [blame] | 90 | name: "apk".to_owned(), |
| 91 | payload_partition_name: "microdroid-apk".to_owned(), |
| 92 | idsig_partition_name: "microdroid-apk-idsig".to_owned(), |
Jooyung Han | 21e9b92 | 2021-06-26 04:14:16 +0900 | [diff] [blame] | 93 | ..Default::default() |
| 94 | }) |
| 95 | .into(), |
| 96 | payload_config_path: format!("/mnt/apk/{}", config_path), |
| 97 | ..Default::default() |
| 98 | }; |
| 99 | let mut metadata_file = |
| 100 | OpenOptions::new().create_new(true).read(true).write(true).open(&metadata_path)?; |
| 101 | microdroid_metadata::write_metadata(&metadata, &mut metadata_file)?; |
| 102 | |
| 103 | // put metadata at the first partition |
| 104 | let mut partitions = vec![Partition { |
Jooyung Han | 14e5a8e | 2021-07-06 20:48:38 +0900 | [diff] [blame] | 105 | label: "payload-metadata".to_owned(), |
Jooyung Han | 54f422f | 2021-07-01 00:37:19 +0900 | [diff] [blame] | 106 | paths: vec![metadata_path], |
Jooyung Han | 21e9b92 | 2021-06-26 04:14:16 +0900 | [diff] [blame] | 107 | writable: false, |
| 108 | }]; |
| 109 | |
Jooyung Han | 9900f3d | 2021-07-06 10:27:54 +0900 | [diff] [blame] | 110 | let apex_info_list = ApexInfoList::load()?; |
Jooyung Han | 21e9b92 | 2021-06-26 04:14:16 +0900 | [diff] [blame] | 111 | for (i, apex) in apexes.iter().enumerate() { |
Jooyung Han | 9588463 | 2021-07-06 22:27:54 +0900 | [diff] [blame^] | 112 | partitions.push(Partition { |
| 113 | label: format!("microdroid-apex-{}", i), |
| 114 | paths: vec![apex_info_list.get_path_for(&apex.name)?], |
| 115 | writable: false, |
| 116 | }); |
Jooyung Han | 21e9b92 | 2021-06-26 04:14:16 +0900 | [diff] [blame] | 117 | } |
Jooyung Han | 9588463 | 2021-07-06 22:27:54 +0900 | [diff] [blame^] | 118 | partitions.push(Partition { |
| 119 | label: "microdroid-apk".to_owned(), |
| 120 | paths: vec![apk_file], |
| 121 | writable: false, |
| 122 | }); |
| 123 | partitions.push(Partition { |
| 124 | label: "microdroid-apk-idsig".to_owned(), |
| 125 | paths: vec![idsig_file], |
| 126 | writable: false, |
| 127 | }); |
Jooyung Han | 21e9b92 | 2021-06-26 04:14:16 +0900 | [diff] [blame] | 128 | |
| 129 | Ok(DiskImage { image: None, partitions, writable: false }) |
| 130 | } |