176adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker/* 276adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker * Copyright (C) 2014 The Android Open Source Project 376adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker * 476adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker * Licensed under the Apache License, Version 2.0 (the "License"); 576adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker * you may not use this file except in compliance with the License. 676adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker * You may obtain a copy of the License at 776adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker * 876adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker * http://www.apache.org/licenses/LICENSE-2.0 976adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker * 1076adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker * Unless required by applicable law or agreed to in writing, software 1176adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker * distributed under the License is distributed on an "AS IS" BASIS, 1276adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 1376adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker * See the License for the specific language governing permissions and 1476adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker * limitations under the License. 1576adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker */ 1676adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker 1776adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker// This program takes a file on an ext4 filesystem and produces a list 1876adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker// of the blocks that file occupies, which enables the file contents 1976adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker// to be read directly from the block device without mounting the 2076adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker// filesystem. 2176adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker// 2276adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker// If the filesystem is using an encrypted block device, it will also 2376adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker// read the file and rewrite it to the same blocks of the underlying 2476adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker// (unencrypted) block device, so the file contents can be read 2576adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker// without the need for the decryption key. 2676adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker// 2776adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker// The output of this program is a "block map" which looks like this: 2876adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker// 2976adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker// /dev/block/platform/msm_sdcc.1/by-name/userdata # block device 3076adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker// 49652 4096 # file size in bytes, block size 3176adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker// 3 # count of block ranges 3276adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker// 1000 1008 # block range 0 3376adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker// 2100 2102 # ... block range 1 3476adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker// 30 33 # ... block range 2 3576adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker// 3676adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker// Each block range represents a half-open interval; the line "30 33" 3776adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker// reprents the blocks [30, 31, 32]. 3876adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker// 3976adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker// Recovery can take this block map file and retrieve the underlying 4076adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker// file data to use as an update package. 4176adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker 423a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao/** 433a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao * In addition to the uncrypt work, uncrypt also takes care of setting and 443a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao * clearing the bootloader control block (BCB) at /misc partition. 453a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao * 463a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao * uncrypt is triggered as init services on demand. It uses socket to 473a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao * communicate with its caller (i.e. system_server). The socket is managed by 483a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao * init (i.e. created prior to the service starts, and destroyed when uncrypt 493a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao * exits). 503a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao * 513a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao * Below is the uncrypt protocol. 523a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao * 533a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao * a. caller b. init c. uncrypt 543a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao * --------------- ------------ -------------- 553a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao * a1. ctl.start: 563a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao * setup-bcb / 573a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao * clear-bcb / 583a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao * uncrypt 593a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao * 603a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao * b2. create socket at 613a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao * /dev/socket/uncrypt 623a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao * 633a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao * c3. listen and accept 643a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao * 653a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao * a4. send a 4-byte int 663a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao * (message length) 673a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao * c5. receive message length 683a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao * a6. send message 693a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao * c7. receive message 703a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao * c8. <do the work; may send 713a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao * the progress> 723a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao * a9. <may handle progress> 733a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao * c10. <upon finishing> 743a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao * send "100" or "-1" 753a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao * 763a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao * a11. receive status code 773a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao * a12. send a 4-byte int to 783a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao * ack the receive of the 793a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao * final status code 803a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao * c13. receive and exit 813a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao * 823a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao * b14. destroy the socket 833a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao * 843a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao * Note that a12 and c13 are necessary to ensure a11 happens before the socket 853a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao * gets destroyed in b14. 863a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao */ 873a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao 883a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao#include <arpa/inet.h> 89d4d4c2456ac6649f65fd561998b2cb8eb2c97eddElliott Hughes#include <errno.h> 90752386319c0d9fb7e4e429a0644086b318d3b4b5Tao Bao#include <fcntl.h> 91b8df5fb90e4b7244fa7925b9706cdd218e18a2aaTao Bao#include <inttypes.h> 9225dd0386fe69460cd1d39de116197dd2c7bf9ec2Yabin Cui#include <libgen.h> 93752386319c0d9fb7e4e429a0644086b318d3b4b5Tao Bao#include <linux/fs.h> 94752386319c0d9fb7e4e429a0644086b318d3b4b5Tao Bao#include <stdarg.h> 9576adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker#include <stdio.h> 9676adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker#include <stdlib.h> 97cd3c55ab40efd12f5a2d396dbb57509e4d071641Elliott Hughes#include <string.h> 9876adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker#include <sys/mman.h> 993a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao#include <sys/socket.h> 100383b00d0e498e1f3b84e9dcfc6dddec6a76379d7Tao Bao#include <sys/stat.h> 101383b00d0e498e1f3b84e9dcfc6dddec6a76379d7Tao Bao#include <sys/types.h> 102752386319c0d9fb7e4e429a0644086b318d3b4b5Tao Bao#include <unistd.h> 10376adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker 10425dd0386fe69460cd1d39de116197dd2c7bf9ec2Yabin Cui#include <algorithm> 105c754792a07d340c30128b2fd064a58b1f15623daTao Bao#include <memory> 10625dd0386fe69460cd1d39de116197dd2c7bf9ec2Yabin Cui#include <vector> 107c754792a07d340c30128b2fd064a58b1f15623daTao Bao 1084b166f0e69d46858ff998414da2a01e0266fa339Elliott Hughes#include <android-base/file.h> 1092d46da57e19612b0a29ee0b8601146cf8fb9ff5eYabin Cui#include <android-base/logging.h> 11091e3aee9bdc1a503affdd925dd4da352a198abcaElliott Hughes#include <android-base/properties.h> 11125dd0386fe69460cd1d39de116197dd2c7bf9ec2Yabin Cui#include <android-base/stringprintf.h> 1124b166f0e69d46858ff998414da2a01e0266fa339Elliott Hughes#include <android-base/strings.h> 113bcabd0929316fdd022ea102cc86396547ad9f070Elliott Hughes#include <android-base/unique_fd.h> 1142f272c0551f984e83bc5abaf240e0dddb38a3326Yabin Cui#include <bootloader_message/bootloader_message.h> 115752386319c0d9fb7e4e429a0644086b318d3b4b5Tao Bao#include <cutils/android_reboot.h> 1163a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao#include <cutils/sockets.h> 11776adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker#include <fs_mgr.h> 11876adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker 1191fc5bf353a8719d16fd9ba29a661d211bad4038fTao Bao#include "otautil/error_code.h" 120da44cf18f3ce4bbffa85ad0a50bb25e9cb54a86dTianjie Xu 121bc42603a8daae62b158d159c97ef8acfaa39d70dTianjie Xustatic constexpr int WINDOW_SIZE = 5; 122bc42603a8daae62b158d159c97ef8acfaa39d70dTianjie Xustatic constexpr int FIBMAP_RETRY_LIMIT = 3; 123383b00d0e498e1f3b84e9dcfc6dddec6a76379d7Tao Bao 1243a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao// uncrypt provides three services: SETUP_BCB, CLEAR_BCB and UNCRYPT. 1253a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao// 1263a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao// SETUP_BCB and CLEAR_BCB services use socket communication and do not rely 1273a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao// on /cache partitions. They will handle requests to reboot into recovery 1283a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao// (for applying updates for non-A/B devices, or factory resets for all 1293a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao// devices). 1303a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao// 1313a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao// UNCRYPT service still needs files on /cache partition (UNCRYPT_PATH_FILE 1323a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao// and CACHE_BLOCK_MAP). It will be working (and needed) only for non-A/B 1333a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao// devices, on which /cache partitions always exist. 1342d46da57e19612b0a29ee0b8601146cf8fb9ff5eYabin Cuistatic const std::string CACHE_BLOCK_MAP = "/cache/recovery/block.map"; 1352d46da57e19612b0a29ee0b8601146cf8fb9ff5eYabin Cuistatic const std::string UNCRYPT_PATH_FILE = "/cache/recovery/uncrypt_file"; 136e16e799dfdff5392d2bdc460f41353100d082e96Tianjie Xustatic const std::string UNCRYPT_STATUS = "/cache/recovery/uncrypt_status"; 1373a2bb594df4b48c6afb1f029041dd6db0735de58Tao Baostatic const std::string UNCRYPT_SOCKET = "uncrypt"; 13876adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker 1393a2bb594df4b48c6afb1f029041dd6db0735de58Tao Baostatic struct fstab* fstab = nullptr; 1402efc9d994ce59f9ebfc2290c2adc5d760e8939c2Doug Zongker 141381f455cac0905b023dde79625b06c27b6165dd0Tao Baostatic int write_at_offset(unsigned char* buffer, size_t size, int wfd, off64_t offset) { 1427bad7c4646ee8fd8d6e6ed0ffd3ddbb0c1b41a2fElliott Hughes if (TEMP_FAILURE_RETRY(lseek64(wfd, offset, SEEK_SET)) == -1) { 143747781433fb01f745529c7e9dd97c5599070ad0dTianjie Xu PLOG(ERROR) << "error seeking to offset " << offset; 1447bad7c4646ee8fd8d6e6ed0ffd3ddbb0c1b41a2fElliott Hughes return -1; 1457bad7c4646ee8fd8d6e6ed0ffd3ddbb0c1b41a2fElliott Hughes } 14625dd0386fe69460cd1d39de116197dd2c7bf9ec2Yabin Cui if (!android::base::WriteFully(wfd, buffer, size)) { 147747781433fb01f745529c7e9dd97c5599070ad0dTianjie Xu PLOG(ERROR) << "error writing offset " << offset; 14825dd0386fe69460cd1d39de116197dd2c7bf9ec2Yabin Cui return -1; 14976adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker } 15076adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker return 0; 15176adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker} 15276adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker 15325dd0386fe69460cd1d39de116197dd2c7bf9ec2Yabin Cuistatic void add_block_to_ranges(std::vector<int>& ranges, int new_block) { 15425dd0386fe69460cd1d39de116197dd2c7bf9ec2Yabin Cui if (!ranges.empty() && new_block == ranges.back()) { 15576adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker // If the new block comes immediately after the current range, 15676adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker // all we have to do is extend the current range. 15725dd0386fe69460cd1d39de116197dd2c7bf9ec2Yabin Cui ++ranges.back(); 15876adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker } else { 15976adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker // We need to start a new range. 16025dd0386fe69460cd1d39de116197dd2c7bf9ec2Yabin Cui ranges.push_back(new_block); 16125dd0386fe69460cd1d39de116197dd2c7bf9ec2Yabin Cui ranges.push_back(new_block + 1); 16276adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker } 16376adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker} 16476adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker 165381f455cac0905b023dde79625b06c27b6165dd0Tao Baostatic struct fstab* read_fstab() { 166d13b6cf29c71412adac3b0dca5eddcd6c75f5163Bowgo Tsai fstab = fs_mgr_read_fstab_default(); 16776adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker if (!fstab) { 168d13b6cf29c71412adac3b0dca5eddcd6c75f5163Bowgo Tsai LOG(ERROR) << "failed to read default fstab"; 16976adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker return NULL; 17076adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker } 17176adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker 1722efc9d994ce59f9ebfc2290c2adc5d760e8939c2Doug Zongker return fstab; 1732efc9d994ce59f9ebfc2290c2adc5d760e8939c2Doug Zongker} 1742efc9d994ce59f9ebfc2290c2adc5d760e8939c2Doug Zongker 175848f227eea524a48208bdd4181f90fb63a31ed2bJaegeuk Kimstatic const char* find_block_device(const char* path, bool* encryptable, bool* encrypted, bool *f2fs_fs) { 17676adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker // Look for a volume whose mount point is the prefix of path and 17776adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker // return its block device. Set encrypted if it's currently 17876adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker // encrypted. 179848f227eea524a48208bdd4181f90fb63a31ed2bJaegeuk Kim 180848f227eea524a48208bdd4181f90fb63a31ed2bJaegeuk Kim // ensure f2fs_fs is set to 0 first. 181848f227eea524a48208bdd4181f90fb63a31ed2bJaegeuk Kim if (f2fs_fs) 182848f227eea524a48208bdd4181f90fb63a31ed2bJaegeuk Kim *f2fs_fs = false; 183381f455cac0905b023dde79625b06c27b6165dd0Tao Bao for (int i = 0; i < fstab->num_entries; ++i) { 18476adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker struct fstab_rec* v = &fstab->recs[i]; 185381f455cac0905b023dde79625b06c27b6165dd0Tao Bao if (!v->mount_point) { 186381f455cac0905b023dde79625b06c27b6165dd0Tao Bao continue; 187381f455cac0905b023dde79625b06c27b6165dd0Tao Bao } 18876adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker int len = strlen(v->mount_point); 18976adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker if (strncmp(path, v->mount_point, len) == 0 && 19076adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker (path[len] == '/' || path[len] == 0)) { 191381f455cac0905b023dde79625b06c27b6165dd0Tao Bao *encrypted = false; 192381f455cac0905b023dde79625b06c27b6165dd0Tao Bao *encryptable = false; 1937cf50c60b5c955010a8b8d0c23264f03ab673debTao Bao if (fs_mgr_is_encryptable(v) || fs_mgr_is_file_encrypted(v)) { 194381f455cac0905b023dde79625b06c27b6165dd0Tao Bao *encryptable = true; 19591e3aee9bdc1a503affdd925dd4da352a198abcaElliott Hughes if (android::base::GetProperty("ro.crypto.state", "") == "encrypted") { 196381f455cac0905b023dde79625b06c27b6165dd0Tao Bao *encrypted = true; 19776adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker } 19876adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker } 199848f227eea524a48208bdd4181f90fb63a31ed2bJaegeuk Kim if (f2fs_fs && strcmp(v->fs_type, "f2fs") == 0) 200848f227eea524a48208bdd4181f90fb63a31ed2bJaegeuk Kim *f2fs_fs = true; 20176adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker return v->blk_device; 20276adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker } 20376adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker } 20476adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker 20576adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker return NULL; 20676adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker} 20776adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker 2083a2bb594df4b48c6afb1f029041dd6db0735de58Tao Baostatic bool write_status_to_socket(int status, int socket) { 20928c1e5d3aa9610db6e141380b1435937fc7f07dbTianjie Xu // If socket equals -1, uncrypt is in debug mode without socket communication. 21028c1e5d3aa9610db6e141380b1435937fc7f07dbTianjie Xu // Skip writing and return success. 21128c1e5d3aa9610db6e141380b1435937fc7f07dbTianjie Xu if (socket == -1) { 21228c1e5d3aa9610db6e141380b1435937fc7f07dbTianjie Xu return true; 21328c1e5d3aa9610db6e141380b1435937fc7f07dbTianjie Xu } 2143a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao int status_out = htonl(status); 2153a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao return android::base::WriteFully(socket, &status_out, sizeof(int)); 2163a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao} 2173a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao 218383b00d0e498e1f3b84e9dcfc6dddec6a76379d7Tao Bao// Parse uncrypt_file to find the update package name. 2192d46da57e19612b0a29ee0b8601146cf8fb9ff5eYabin Cuistatic bool find_uncrypt_package(const std::string& uncrypt_path_file, std::string* package_name) { 2202d46da57e19612b0a29ee0b8601146cf8fb9ff5eYabin Cui CHECK(package_name != nullptr); 2212d46da57e19612b0a29ee0b8601146cf8fb9ff5eYabin Cui std::string uncrypt_path; 2222d46da57e19612b0a29ee0b8601146cf8fb9ff5eYabin Cui if (!android::base::ReadFileToString(uncrypt_path_file, &uncrypt_path)) { 223747781433fb01f745529c7e9dd97c5599070ad0dTianjie Xu PLOG(ERROR) << "failed to open \"" << uncrypt_path_file << "\""; 224383b00d0e498e1f3b84e9dcfc6dddec6a76379d7Tao Bao return false; 22576adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker } 22676adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker 227383b00d0e498e1f3b84e9dcfc6dddec6a76379d7Tao Bao // Remove the trailing '\n' if present. 2282d46da57e19612b0a29ee0b8601146cf8fb9ff5eYabin Cui *package_name = android::base::Trim(uncrypt_path); 229383b00d0e498e1f3b84e9dcfc6dddec6a76379d7Tao Bao return true; 23076adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker} 23176adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker 232bc42603a8daae62b158d159c97ef8acfaa39d70dTianjie Xustatic int retry_fibmap(const int fd, const char* name, int* block, const int head_block) { 233bc42603a8daae62b158d159c97ef8acfaa39d70dTianjie Xu CHECK(block != nullptr); 234bc42603a8daae62b158d159c97ef8acfaa39d70dTianjie Xu for (size_t i = 0; i < FIBMAP_RETRY_LIMIT; i++) { 235bc42603a8daae62b158d159c97ef8acfaa39d70dTianjie Xu if (fsync(fd) == -1) { 236bc42603a8daae62b158d159c97ef8acfaa39d70dTianjie Xu PLOG(ERROR) << "failed to fsync \"" << name << "\""; 237bc42603a8daae62b158d159c97ef8acfaa39d70dTianjie Xu return kUncryptFileSyncError; 238bc42603a8daae62b158d159c97ef8acfaa39d70dTianjie Xu } 239bc42603a8daae62b158d159c97ef8acfaa39d70dTianjie Xu if (ioctl(fd, FIBMAP, block) != 0) { 240bc42603a8daae62b158d159c97ef8acfaa39d70dTianjie Xu PLOG(ERROR) << "failed to find block " << head_block; 241bc42603a8daae62b158d159c97ef8acfaa39d70dTianjie Xu return kUncryptIoctlError; 242bc42603a8daae62b158d159c97ef8acfaa39d70dTianjie Xu } 243bc42603a8daae62b158d159c97ef8acfaa39d70dTianjie Xu if (*block != 0) { 244bc42603a8daae62b158d159c97ef8acfaa39d70dTianjie Xu return kUncryptNoError; 245bc42603a8daae62b158d159c97ef8acfaa39d70dTianjie Xu } 246bc42603a8daae62b158d159c97ef8acfaa39d70dTianjie Xu sleep(1); 247bc42603a8daae62b158d159c97ef8acfaa39d70dTianjie Xu } 248bc42603a8daae62b158d159c97ef8acfaa39d70dTianjie Xu LOG(ERROR) << "fibmap of " << head_block << "always returns 0"; 249bc42603a8daae62b158d159c97ef8acfaa39d70dTianjie Xu return kUncryptIoctlError; 250bc42603a8daae62b158d159c97ef8acfaa39d70dTianjie Xu} 251bc42603a8daae62b158d159c97ef8acfaa39d70dTianjie Xu 252381f455cac0905b023dde79625b06c27b6165dd0Tao Baostatic int produce_block_map(const char* path, const char* map_file, const char* blk_dev, 253848f227eea524a48208bdd4181f90fb63a31ed2bJaegeuk Kim bool encrypted, bool f2fs_fs, int socket) { 25425dd0386fe69460cd1d39de116197dd2c7bf9ec2Yabin Cui std::string err; 25525dd0386fe69460cd1d39de116197dd2c7bf9ec2Yabin Cui if (!android::base::RemoveFileIfExists(map_file, &err)) { 256747781433fb01f745529c7e9dd97c5599070ad0dTianjie Xu LOG(ERROR) << "failed to remove the existing map file " << map_file << ": " << err; 257da44cf18f3ce4bbffa85ad0a50bb25e9cb54a86dTianjie Xu return kUncryptFileRemoveError; 25825dd0386fe69460cd1d39de116197dd2c7bf9ec2Yabin Cui } 25925dd0386fe69460cd1d39de116197dd2c7bf9ec2Yabin Cui std::string tmp_map_file = std::string(map_file) + ".tmp"; 260bcabd0929316fdd022ea102cc86396547ad9f070Elliott Hughes android::base::unique_fd mapfd(open(tmp_map_file.c_str(), 261bcabd0929316fdd022ea102cc86396547ad9f070Elliott Hughes O_WRONLY | O_CREAT, S_IRUSR | S_IWUSR)); 262bcabd0929316fdd022ea102cc86396547ad9f070Elliott Hughes if (mapfd == -1) { 263747781433fb01f745529c7e9dd97c5599070ad0dTianjie Xu PLOG(ERROR) << "failed to open " << tmp_map_file; 264da44cf18f3ce4bbffa85ad0a50bb25e9cb54a86dTianjie Xu return kUncryptFileOpenError; 265a72512cd058da7de4cdb667776ed47fad873f12cSungmin Choi } 26676adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker 2673a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao // Make sure we can write to the socket. 2683a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao if (!write_status_to_socket(0, socket)) { 269747781433fb01f745529c7e9dd97c5599070ad0dTianjie Xu LOG(ERROR) << "failed to write to socket " << socket; 270da44cf18f3ce4bbffa85ad0a50bb25e9cb54a86dTianjie Xu return kUncryptSocketWriteError; 271383b00d0e498e1f3b84e9dcfc6dddec6a76379d7Tao Bao } 272383b00d0e498e1f3b84e9dcfc6dddec6a76379d7Tao Bao 273381f455cac0905b023dde79625b06c27b6165dd0Tao Bao struct stat sb; 274c754792a07d340c30128b2fd064a58b1f15623daTao Bao if (stat(path, &sb) != 0) { 275747781433fb01f745529c7e9dd97c5599070ad0dTianjie Xu LOG(ERROR) << "failed to stat " << path; 276da44cf18f3ce4bbffa85ad0a50bb25e9cb54a86dTianjie Xu return kUncryptFileStatError; 27776adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker } 27876adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker 279747781433fb01f745529c7e9dd97c5599070ad0dTianjie Xu LOG(INFO) << " block size: " << sb.st_blksize << " bytes"; 28076adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker 28176adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker int blocks = ((sb.st_size-1) / sb.st_blksize) + 1; 282747781433fb01f745529c7e9dd97c5599070ad0dTianjie Xu LOG(INFO) << " file size: " << sb.st_size << " bytes, " << blocks << " blocks"; 28376adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker 28425dd0386fe69460cd1d39de116197dd2c7bf9ec2Yabin Cui std::vector<int> ranges; 28576adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker 28654a2747ef305c10d07d8db393125dbcbb461c428Chih-Hung Hsieh std::string s = android::base::StringPrintf("%s\n%" PRId64 " %" PRId64 "\n", 28754a2747ef305c10d07d8db393125dbcbb461c428Chih-Hung Hsieh blk_dev, static_cast<int64_t>(sb.st_size), 28854a2747ef305c10d07d8db393125dbcbb461c428Chih-Hung Hsieh static_cast<int64_t>(sb.st_blksize)); 289bcabd0929316fdd022ea102cc86396547ad9f070Elliott Hughes if (!android::base::WriteStringToFd(s, mapfd)) { 290747781433fb01f745529c7e9dd97c5599070ad0dTianjie Xu PLOG(ERROR) << "failed to write " << tmp_map_file; 291da44cf18f3ce4bbffa85ad0a50bb25e9cb54a86dTianjie Xu return kUncryptWriteError; 29225dd0386fe69460cd1d39de116197dd2c7bf9ec2Yabin Cui } 29376adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker 29425dd0386fe69460cd1d39de116197dd2c7bf9ec2Yabin Cui std::vector<std::vector<unsigned char>> buffers; 29576adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker if (encrypted) { 29625dd0386fe69460cd1d39de116197dd2c7bf9ec2Yabin Cui buffers.resize(WINDOW_SIZE, std::vector<unsigned char>(sb.st_blksize)); 29776adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker } 29876adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker int head_block = 0; 29976adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker int head = 0, tail = 0; 30076adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker 301bcabd0929316fdd022ea102cc86396547ad9f070Elliott Hughes android::base::unique_fd fd(open(path, O_RDONLY)); 302bcabd0929316fdd022ea102cc86396547ad9f070Elliott Hughes if (fd == -1) { 303747781433fb01f745529c7e9dd97c5599070ad0dTianjie Xu PLOG(ERROR) << "failed to open " << path << " for reading"; 304da44cf18f3ce4bbffa85ad0a50bb25e9cb54a86dTianjie Xu return kUncryptFileOpenError; 30576adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker } 30676adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker 307bcabd0929316fdd022ea102cc86396547ad9f070Elliott Hughes android::base::unique_fd wfd; 30876adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker if (encrypted) { 309bcabd0929316fdd022ea102cc86396547ad9f070Elliott Hughes wfd.reset(open(blk_dev, O_WRONLY)); 310bcabd0929316fdd022ea102cc86396547ad9f070Elliott Hughes if (wfd == -1) { 311747781433fb01f745529c7e9dd97c5599070ad0dTianjie Xu PLOG(ERROR) << "failed to open " << blk_dev << " for writing"; 312da44cf18f3ce4bbffa85ad0a50bb25e9cb54a86dTianjie Xu return kUncryptBlockOpenError; 31376adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker } 31476adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker } 31576adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker 316848f227eea524a48208bdd4181f90fb63a31ed2bJaegeuk Kim#ifndef F2FS_IOC_SET_DONTMOVE 317848f227eea524a48208bdd4181f90fb63a31ed2bJaegeuk Kim#ifndef F2FS_IOCTL_MAGIC 318848f227eea524a48208bdd4181f90fb63a31ed2bJaegeuk Kim#define F2FS_IOCTL_MAGIC 0xf5 319848f227eea524a48208bdd4181f90fb63a31ed2bJaegeuk Kim#endif 320848f227eea524a48208bdd4181f90fb63a31ed2bJaegeuk Kim#define F2FS_IOC_SET_DONTMOVE _IO(F2FS_IOCTL_MAGIC, 13) 321848f227eea524a48208bdd4181f90fb63a31ed2bJaegeuk Kim#endif 322848f227eea524a48208bdd4181f90fb63a31ed2bJaegeuk Kim if (f2fs_fs && ioctl(fd, F2FS_IOC_SET_DONTMOVE) < 0) { 323848f227eea524a48208bdd4181f90fb63a31ed2bJaegeuk Kim PLOG(ERROR) << "Failed to set non-movable file for f2fs: " << path << " on " << blk_dev; 324848f227eea524a48208bdd4181f90fb63a31ed2bJaegeuk Kim return kUncryptIoctlError; 325848f227eea524a48208bdd4181f90fb63a31ed2bJaegeuk Kim } 326848f227eea524a48208bdd4181f90fb63a31ed2bJaegeuk Kim 327b8df5fb90e4b7244fa7925b9706cdd218e18a2aaTao Bao off64_t pos = 0; 328383b00d0e498e1f3b84e9dcfc6dddec6a76379d7Tao Bao int last_progress = 0; 32976adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker while (pos < sb.st_size) { 330383b00d0e498e1f3b84e9dcfc6dddec6a76379d7Tao Bao // Update the status file, progress must be between [0, 99]. 331383b00d0e498e1f3b84e9dcfc6dddec6a76379d7Tao Bao int progress = static_cast<int>(100 * (double(pos) / double(sb.st_size))); 332383b00d0e498e1f3b84e9dcfc6dddec6a76379d7Tao Bao if (progress > last_progress) { 3333a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao last_progress = progress; 3343a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao write_status_to_socket(progress, socket); 335383b00d0e498e1f3b84e9dcfc6dddec6a76379d7Tao Bao } 336383b00d0e498e1f3b84e9dcfc6dddec6a76379d7Tao Bao 33776adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker if ((tail+1) % WINDOW_SIZE == head) { 33876adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker // write out head buffer 33976adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker int block = head_block; 340bcabd0929316fdd022ea102cc86396547ad9f070Elliott Hughes if (ioctl(fd, FIBMAP, &block) != 0) { 341da44cf18f3ce4bbffa85ad0a50bb25e9cb54a86dTianjie Xu PLOG(ERROR) << "failed to find block " << head_block; 342da44cf18f3ce4bbffa85ad0a50bb25e9cb54a86dTianjie Xu return kUncryptIoctlError; 34376adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker } 344bc42603a8daae62b158d159c97ef8acfaa39d70dTianjie Xu 345bc42603a8daae62b158d159c97ef8acfaa39d70dTianjie Xu if (block == 0) { 346bc42603a8daae62b158d159c97ef8acfaa39d70dTianjie Xu LOG(ERROR) << "failed to find block " << head_block << ", retrying"; 347bc42603a8daae62b158d159c97ef8acfaa39d70dTianjie Xu int error = retry_fibmap(fd, path, &block, head_block); 348bc42603a8daae62b158d159c97ef8acfaa39d70dTianjie Xu if (error != kUncryptNoError) { 349bc42603a8daae62b158d159c97ef8acfaa39d70dTianjie Xu return error; 350bc42603a8daae62b158d159c97ef8acfaa39d70dTianjie Xu } 351bc42603a8daae62b158d159c97ef8acfaa39d70dTianjie Xu } 352bc42603a8daae62b158d159c97ef8acfaa39d70dTianjie Xu 35325dd0386fe69460cd1d39de116197dd2c7bf9ec2Yabin Cui add_block_to_ranges(ranges, block); 35476adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker if (encrypted) { 355bcabd0929316fdd022ea102cc86396547ad9f070Elliott Hughes if (write_at_offset(buffers[head].data(), sb.st_blksize, wfd, 356bcabd0929316fdd022ea102cc86396547ad9f070Elliott Hughes static_cast<off64_t>(sb.st_blksize) * block) != 0) { 357da44cf18f3ce4bbffa85ad0a50bb25e9cb54a86dTianjie Xu return kUncryptWriteError; 35876adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker } 35976adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker } 36076adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker head = (head + 1) % WINDOW_SIZE; 36176adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker ++head_block; 36276adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker } 36376adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker 36476adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker // read next block to tail 36576adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker if (encrypted) { 36625dd0386fe69460cd1d39de116197dd2c7bf9ec2Yabin Cui size_t to_read = static_cast<size_t>( 36725dd0386fe69460cd1d39de116197dd2c7bf9ec2Yabin Cui std::min(static_cast<off64_t>(sb.st_blksize), sb.st_size - pos)); 368bcabd0929316fdd022ea102cc86396547ad9f070Elliott Hughes if (!android::base::ReadFully(fd, buffers[tail].data(), to_read)) { 369747781433fb01f745529c7e9dd97c5599070ad0dTianjie Xu PLOG(ERROR) << "failed to read " << path; 370da44cf18f3ce4bbffa85ad0a50bb25e9cb54a86dTianjie Xu return kUncryptReadError; 37176adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker } 37225dd0386fe69460cd1d39de116197dd2c7bf9ec2Yabin Cui pos += to_read; 37376adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker } else { 37476adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker // If we're not encrypting; we don't need to actually read 37576adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker // anything, just skip pos forward as if we'd read a 37676adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker // block. 37776adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker pos += sb.st_blksize; 37876adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker } 37976adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker tail = (tail+1) % WINDOW_SIZE; 38076adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker } 38176adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker 38276adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker while (head != tail) { 38376adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker // write out head buffer 38476adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker int block = head_block; 385bcabd0929316fdd022ea102cc86396547ad9f070Elliott Hughes if (ioctl(fd, FIBMAP, &block) != 0) { 386da44cf18f3ce4bbffa85ad0a50bb25e9cb54a86dTianjie Xu PLOG(ERROR) << "failed to find block " << head_block; 387da44cf18f3ce4bbffa85ad0a50bb25e9cb54a86dTianjie Xu return kUncryptIoctlError; 38876adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker } 389bc42603a8daae62b158d159c97ef8acfaa39d70dTianjie Xu 390bc42603a8daae62b158d159c97ef8acfaa39d70dTianjie Xu if (block == 0) { 391bc42603a8daae62b158d159c97ef8acfaa39d70dTianjie Xu LOG(ERROR) << "failed to find block " << head_block << ", retrying"; 392bc42603a8daae62b158d159c97ef8acfaa39d70dTianjie Xu int error = retry_fibmap(fd, path, &block, head_block); 393bc42603a8daae62b158d159c97ef8acfaa39d70dTianjie Xu if (error != kUncryptNoError) { 394bc42603a8daae62b158d159c97ef8acfaa39d70dTianjie Xu return error; 395bc42603a8daae62b158d159c97ef8acfaa39d70dTianjie Xu } 396bc42603a8daae62b158d159c97ef8acfaa39d70dTianjie Xu } 397bc42603a8daae62b158d159c97ef8acfaa39d70dTianjie Xu 39825dd0386fe69460cd1d39de116197dd2c7bf9ec2Yabin Cui add_block_to_ranges(ranges, block); 39976adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker if (encrypted) { 400bcabd0929316fdd022ea102cc86396547ad9f070Elliott Hughes if (write_at_offset(buffers[head].data(), sb.st_blksize, wfd, 401bcabd0929316fdd022ea102cc86396547ad9f070Elliott Hughes static_cast<off64_t>(sb.st_blksize) * block) != 0) { 402da44cf18f3ce4bbffa85ad0a50bb25e9cb54a86dTianjie Xu return kUncryptWriteError; 40376adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker } 40476adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker } 40576adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker head = (head + 1) % WINDOW_SIZE; 40676adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker ++head_block; 40776adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker } 40876adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker 40925dd0386fe69460cd1d39de116197dd2c7bf9ec2Yabin Cui if (!android::base::WriteStringToFd( 410bcabd0929316fdd022ea102cc86396547ad9f070Elliott Hughes android::base::StringPrintf("%zu\n", ranges.size() / 2), mapfd)) { 411747781433fb01f745529c7e9dd97c5599070ad0dTianjie Xu PLOG(ERROR) << "failed to write " << tmp_map_file; 412da44cf18f3ce4bbffa85ad0a50bb25e9cb54a86dTianjie Xu return kUncryptWriteError; 41325dd0386fe69460cd1d39de116197dd2c7bf9ec2Yabin Cui } 41425dd0386fe69460cd1d39de116197dd2c7bf9ec2Yabin Cui for (size_t i = 0; i < ranges.size(); i += 2) { 41525dd0386fe69460cd1d39de116197dd2c7bf9ec2Yabin Cui if (!android::base::WriteStringToFd( 416bcabd0929316fdd022ea102cc86396547ad9f070Elliott Hughes android::base::StringPrintf("%d %d\n", ranges[i], ranges[i+1]), mapfd)) { 417747781433fb01f745529c7e9dd97c5599070ad0dTianjie Xu PLOG(ERROR) << "failed to write " << tmp_map_file; 418da44cf18f3ce4bbffa85ad0a50bb25e9cb54a86dTianjie Xu return kUncryptWriteError; 41925dd0386fe69460cd1d39de116197dd2c7bf9ec2Yabin Cui } 42076adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker } 42176adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker 422bcabd0929316fdd022ea102cc86396547ad9f070Elliott Hughes if (fsync(mapfd) == -1) { 423747781433fb01f745529c7e9dd97c5599070ad0dTianjie Xu PLOG(ERROR) << "failed to fsync \"" << tmp_map_file << "\""; 424da44cf18f3ce4bbffa85ad0a50bb25e9cb54a86dTianjie Xu return kUncryptFileSyncError; 42525dd0386fe69460cd1d39de116197dd2c7bf9ec2Yabin Cui } 426bcabd0929316fdd022ea102cc86396547ad9f070Elliott Hughes if (close(mapfd.release()) == -1) { 427747781433fb01f745529c7e9dd97c5599070ad0dTianjie Xu PLOG(ERROR) << "failed to close " << tmp_map_file; 428da44cf18f3ce4bbffa85ad0a50bb25e9cb54a86dTianjie Xu return kUncryptFileCloseError; 429fb4ccef1df4f0bd8fa830c750f2970dd2df9e51bTao Bao } 43025dd0386fe69460cd1d39de116197dd2c7bf9ec2Yabin Cui 43176adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker if (encrypted) { 432bcabd0929316fdd022ea102cc86396547ad9f070Elliott Hughes if (fsync(wfd) == -1) { 433747781433fb01f745529c7e9dd97c5599070ad0dTianjie Xu PLOG(ERROR) << "failed to fsync \"" << blk_dev << "\""; 434da44cf18f3ce4bbffa85ad0a50bb25e9cb54a86dTianjie Xu return kUncryptFileSyncError; 435fb4ccef1df4f0bd8fa830c750f2970dd2df9e51bTao Bao } 436bcabd0929316fdd022ea102cc86396547ad9f070Elliott Hughes if (close(wfd.release()) == -1) { 437747781433fb01f745529c7e9dd97c5599070ad0dTianjie Xu PLOG(ERROR) << "failed to close " << blk_dev; 438da44cf18f3ce4bbffa85ad0a50bb25e9cb54a86dTianjie Xu return kUncryptFileCloseError; 43925dd0386fe69460cd1d39de116197dd2c7bf9ec2Yabin Cui } 44076adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker } 44176adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker 44225dd0386fe69460cd1d39de116197dd2c7bf9ec2Yabin Cui if (rename(tmp_map_file.c_str(), map_file) == -1) { 443747781433fb01f745529c7e9dd97c5599070ad0dTianjie Xu PLOG(ERROR) << "failed to rename " << tmp_map_file << " to " << map_file; 444da44cf18f3ce4bbffa85ad0a50bb25e9cb54a86dTianjie Xu return kUncryptFileRenameError; 44525dd0386fe69460cd1d39de116197dd2c7bf9ec2Yabin Cui } 44625dd0386fe69460cd1d39de116197dd2c7bf9ec2Yabin Cui // Sync dir to make rename() result written to disk. 44725dd0386fe69460cd1d39de116197dd2c7bf9ec2Yabin Cui std::string file_name = map_file; 44825dd0386fe69460cd1d39de116197dd2c7bf9ec2Yabin Cui std::string dir_name = dirname(&file_name[0]); 449bcabd0929316fdd022ea102cc86396547ad9f070Elliott Hughes android::base::unique_fd dfd(open(dir_name.c_str(), O_RDONLY | O_DIRECTORY)); 450bcabd0929316fdd022ea102cc86396547ad9f070Elliott Hughes if (dfd == -1) { 451747781433fb01f745529c7e9dd97c5599070ad0dTianjie Xu PLOG(ERROR) << "failed to open dir " << dir_name; 452da44cf18f3ce4bbffa85ad0a50bb25e9cb54a86dTianjie Xu return kUncryptFileOpenError; 45325dd0386fe69460cd1d39de116197dd2c7bf9ec2Yabin Cui } 454bcabd0929316fdd022ea102cc86396547ad9f070Elliott Hughes if (fsync(dfd) == -1) { 455747781433fb01f745529c7e9dd97c5599070ad0dTianjie Xu PLOG(ERROR) << "failed to fsync " << dir_name; 456da44cf18f3ce4bbffa85ad0a50bb25e9cb54a86dTianjie Xu return kUncryptFileSyncError; 45725dd0386fe69460cd1d39de116197dd2c7bf9ec2Yabin Cui } 458bcabd0929316fdd022ea102cc86396547ad9f070Elliott Hughes if (close(dfd.release()) == -1) { 459747781433fb01f745529c7e9dd97c5599070ad0dTianjie Xu PLOG(ERROR) << "failed to close " << dir_name; 460da44cf18f3ce4bbffa85ad0a50bb25e9cb54a86dTianjie Xu return kUncryptFileCloseError; 46125dd0386fe69460cd1d39de116197dd2c7bf9ec2Yabin Cui } 46276adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker return 0; 46376adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker} 46476adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker 4653a2bb594df4b48c6afb1f029041dd6db0735de58Tao Baostatic int uncrypt(const char* input_path, const char* map_file, const int socket) { 466747781433fb01f745529c7e9dd97c5599070ad0dTianjie Xu LOG(INFO) << "update package is \"" << input_path << "\""; 467f449db2f30235a0c2fef4bc7bc41776e271a60a0Doug Zongker 4688b8e23d5cc38d4f9139b3b3cdca4a9c5ec51139eTianjie Xu // Turn the name of the file we're supposed to convert into an absolute path, so we can find 4698b8e23d5cc38d4f9139b3b3cdca4a9c5ec51139eTianjie Xu // what filesystem it's on. 47076adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker char path[PATH_MAX+1]; 4718b8e23d5cc38d4f9139b3b3cdca4a9c5ec51139eTianjie Xu if (realpath(input_path, path) == nullptr) { 472747781433fb01f745529c7e9dd97c5599070ad0dTianjie Xu PLOG(ERROR) << "failed to convert \"" << input_path << "\" to absolute path"; 4738b8e23d5cc38d4f9139b3b3cdca4a9c5ec51139eTianjie Xu return kUncryptRealpathFindError; 47476adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker } 47576adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker 476381f455cac0905b023dde79625b06c27b6165dd0Tao Bao bool encryptable; 477381f455cac0905b023dde79625b06c27b6165dd0Tao Bao bool encrypted; 478848f227eea524a48208bdd4181f90fb63a31ed2bJaegeuk Kim bool f2fs_fs; 479848f227eea524a48208bdd4181f90fb63a31ed2bJaegeuk Kim const char* blk_dev = find_block_device(path, &encryptable, &encrypted, &f2fs_fs); 4808b8e23d5cc38d4f9139b3b3cdca4a9c5ec51139eTianjie Xu if (blk_dev == nullptr) { 481747781433fb01f745529c7e9dd97c5599070ad0dTianjie Xu LOG(ERROR) << "failed to find block device for " << path; 4828b8e23d5cc38d4f9139b3b3cdca4a9c5ec51139eTianjie Xu return kUncryptBlockDeviceFindError; 48376adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker } 48476adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker 48576adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker // If the filesystem it's on isn't encrypted, we only produce the 48676adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker // block map, we don't rewrite the file contents (it would be 48776adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker // pointless to do so). 488747781433fb01f745529c7e9dd97c5599070ad0dTianjie Xu LOG(INFO) << "encryptable: " << (encryptable ? "yes" : "no"); 489747781433fb01f745529c7e9dd97c5599070ad0dTianjie Xu LOG(INFO) << " encrypted: " << (encrypted ? "yes" : "no"); 49076adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker 491574443d8956802f35347cac7fae7eb16240e3c16Doug Zongker // Recovery supports installing packages from 3 paths: /cache, 492574443d8956802f35347cac7fae7eb16240e3c16Doug Zongker // /data, and /sdcard. (On a particular device, other locations 493574443d8956802f35347cac7fae7eb16240e3c16Doug Zongker // may work, but those are three we actually expect.) 494574443d8956802f35347cac7fae7eb16240e3c16Doug Zongker // 495574443d8956802f35347cac7fae7eb16240e3c16Doug Zongker // On /data we want to convert the file to a block map so that we 496574443d8956802f35347cac7fae7eb16240e3c16Doug Zongker // can read the package without mounting the partition. On /cache 497574443d8956802f35347cac7fae7eb16240e3c16Doug Zongker // and /sdcard we leave the file alone. 498383b00d0e498e1f3b84e9dcfc6dddec6a76379d7Tao Bao if (strncmp(path, "/data/", 6) == 0) { 499747781433fb01f745529c7e9dd97c5599070ad0dTianjie Xu LOG(INFO) << "writing block map " << map_file; 500848f227eea524a48208bdd4181f90fb63a31ed2bJaegeuk Kim return produce_block_map(path, map_file, blk_dev, encrypted, f2fs_fs, socket); 50176adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker } 50276adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker 503383b00d0e498e1f3b84e9dcfc6dddec6a76379d7Tao Bao return 0; 504383b00d0e498e1f3b84e9dcfc6dddec6a76379d7Tao Bao} 505383b00d0e498e1f3b84e9dcfc6dddec6a76379d7Tao Bao 50668fc81e860ab58a5147a48093e57daab38ee84a3Tianjie Xustatic void log_uncrypt_error_code(UncryptErrorCode error_code) { 507da44cf18f3ce4bbffa85ad0a50bb25e9cb54a86dTianjie Xu if (!android::base::WriteStringToFile(android::base::StringPrintf( 50868fc81e860ab58a5147a48093e57daab38ee84a3Tianjie Xu "uncrypt_error: %d\n", error_code), UNCRYPT_STATUS)) { 509da44cf18f3ce4bbffa85ad0a50bb25e9cb54a86dTianjie Xu PLOG(WARNING) << "failed to write to " << UNCRYPT_STATUS; 510da44cf18f3ce4bbffa85ad0a50bb25e9cb54a86dTianjie Xu } 51168fc81e860ab58a5147a48093e57daab38ee84a3Tianjie Xu} 51268fc81e860ab58a5147a48093e57daab38ee84a3Tianjie Xu 51368fc81e860ab58a5147a48093e57daab38ee84a3Tianjie Xustatic bool uncrypt_wrapper(const char* input_path, const char* map_file, const int socket) { 51468fc81e860ab58a5147a48093e57daab38ee84a3Tianjie Xu // Initialize the uncrypt error to kUncryptErrorPlaceholder. 51568fc81e860ab58a5147a48093e57daab38ee84a3Tianjie Xu log_uncrypt_error_code(kUncryptErrorPlaceholder); 516da44cf18f3ce4bbffa85ad0a50bb25e9cb54a86dTianjie Xu 5172d46da57e19612b0a29ee0b8601146cf8fb9ff5eYabin Cui std::string package; 5182d46da57e19612b0a29ee0b8601146cf8fb9ff5eYabin Cui if (input_path == nullptr) { 5192d46da57e19612b0a29ee0b8601146cf8fb9ff5eYabin Cui if (!find_uncrypt_package(UNCRYPT_PATH_FILE, &package)) { 5203a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao write_status_to_socket(-1, socket); 521da44cf18f3ce4bbffa85ad0a50bb25e9cb54a86dTianjie Xu // Overwrite the error message. 52268fc81e860ab58a5147a48093e57daab38ee84a3Tianjie Xu log_uncrypt_error_code(kUncryptPackageMissingError); 5233a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao return false; 524383b00d0e498e1f3b84e9dcfc6dddec6a76379d7Tao Bao } 5252d46da57e19612b0a29ee0b8601146cf8fb9ff5eYabin Cui input_path = package.c_str(); 5262d46da57e19612b0a29ee0b8601146cf8fb9ff5eYabin Cui } 5272d46da57e19612b0a29ee0b8601146cf8fb9ff5eYabin Cui CHECK(map_file != nullptr); 528e16e799dfdff5392d2bdc460f41353100d082e96Tianjie Xu 529e16e799dfdff5392d2bdc460f41353100d082e96Tianjie Xu auto start = std::chrono::system_clock::now(); 5303a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao int status = uncrypt(input_path, map_file, socket); 531da44cf18f3ce4bbffa85ad0a50bb25e9cb54a86dTianjie Xu std::chrono::duration<double> duration = std::chrono::system_clock::now() - start; 532da44cf18f3ce4bbffa85ad0a50bb25e9cb54a86dTianjie Xu int count = static_cast<int>(duration.count()); 533da44cf18f3ce4bbffa85ad0a50bb25e9cb54a86dTianjie Xu 534da44cf18f3ce4bbffa85ad0a50bb25e9cb54a86dTianjie Xu std::string uncrypt_message = android::base::StringPrintf("uncrypt_time: %d\n", count); 5352d46da57e19612b0a29ee0b8601146cf8fb9ff5eYabin Cui if (status != 0) { 536da44cf18f3ce4bbffa85ad0a50bb25e9cb54a86dTianjie Xu // Log the time cost and error code if uncrypt fails. 537da44cf18f3ce4bbffa85ad0a50bb25e9cb54a86dTianjie Xu uncrypt_message += android::base::StringPrintf("uncrypt_error: %d\n", status); 538da44cf18f3ce4bbffa85ad0a50bb25e9cb54a86dTianjie Xu if (!android::base::WriteStringToFile(uncrypt_message, UNCRYPT_STATUS)) { 539da44cf18f3ce4bbffa85ad0a50bb25e9cb54a86dTianjie Xu PLOG(WARNING) << "failed to write to " << UNCRYPT_STATUS; 540da44cf18f3ce4bbffa85ad0a50bb25e9cb54a86dTianjie Xu } 541da44cf18f3ce4bbffa85ad0a50bb25e9cb54a86dTianjie Xu 5423a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao write_status_to_socket(-1, socket); 5433a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao return false; 5442d46da57e19612b0a29ee0b8601146cf8fb9ff5eYabin Cui } 545e16e799dfdff5392d2bdc460f41353100d082e96Tianjie Xu 546da44cf18f3ce4bbffa85ad0a50bb25e9cb54a86dTianjie Xu if (!android::base::WriteStringToFile(uncrypt_message, UNCRYPT_STATUS)) { 547e16e799dfdff5392d2bdc460f41353100d082e96Tianjie Xu PLOG(WARNING) << "failed to write to " << UNCRYPT_STATUS; 548e16e799dfdff5392d2bdc460f41353100d082e96Tianjie Xu } 549e16e799dfdff5392d2bdc460f41353100d082e96Tianjie Xu 5503a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao write_status_to_socket(100, socket); 551e16e799dfdff5392d2bdc460f41353100d082e96Tianjie Xu 5523a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao return true; 5532d46da57e19612b0a29ee0b8601146cf8fb9ff5eYabin Cui} 554ac6aa7ede0b0b1df18b4149fdb9846c3e486918aTao Bao 5553a2bb594df4b48c6afb1f029041dd6db0735de58Tao Baostatic bool clear_bcb(const int socket) { 556a58a6dbe3d06aace0d1419838e162aa5267a4fc0Yabin Cui std::string err; 557a58a6dbe3d06aace0d1419838e162aa5267a4fc0Yabin Cui if (!clear_bootloader_message(&err)) { 558747781433fb01f745529c7e9dd97c5599070ad0dTianjie Xu LOG(ERROR) << "failed to clear bootloader message: " << err; 5593a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao write_status_to_socket(-1, socket); 5603a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao return false; 5612d46da57e19612b0a29ee0b8601146cf8fb9ff5eYabin Cui } 5623a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao write_status_to_socket(100, socket); 5633a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao return true; 5642d46da57e19612b0a29ee0b8601146cf8fb9ff5eYabin Cui} 5652d46da57e19612b0a29ee0b8601146cf8fb9ff5eYabin Cui 5663a2bb594df4b48c6afb1f029041dd6db0735de58Tao Baostatic bool setup_bcb(const int socket) { 5673a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao // c5. receive message length 5683a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao int length; 5693a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao if (!android::base::ReadFully(socket, &length, 4)) { 570747781433fb01f745529c7e9dd97c5599070ad0dTianjie Xu PLOG(ERROR) << "failed to read the length"; 5713a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao return false; 5722d46da57e19612b0a29ee0b8601146cf8fb9ff5eYabin Cui } 5733a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao length = ntohl(length); 5743a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao 5753a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao // c7. receive message 5762d46da57e19612b0a29ee0b8601146cf8fb9ff5eYabin Cui std::string content; 5773a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao content.resize(length); 5783a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao if (!android::base::ReadFully(socket, &content[0], length)) { 57910334088017c9bfcf1b171567e7c4794876c33c9Tao Bao PLOG(ERROR) << "failed to read the message"; 5803a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao return false; 5812d46da57e19612b0a29ee0b8601146cf8fb9ff5eYabin Cui } 582747781433fb01f745529c7e9dd97c5599070ad0dTianjie Xu LOG(INFO) << " received command: [" << content << "] (" << content.size() << ")"; 5836faf0265c9b58db2c15b53f6d29025629d52f882Yabin Cui std::vector<std::string> options = android::base::Split(content, "\n"); 5846faf0265c9b58db2c15b53f6d29025629d52f882Yabin Cui std::string wipe_package; 5856faf0265c9b58db2c15b53f6d29025629d52f882Yabin Cui for (auto& option : options) { 5866faf0265c9b58db2c15b53f6d29025629d52f882Yabin Cui if (android::base::StartsWith(option, "--wipe_package=")) { 5876faf0265c9b58db2c15b53f6d29025629d52f882Yabin Cui std::string path = option.substr(strlen("--wipe_package=")); 5886faf0265c9b58db2c15b53f6d29025629d52f882Yabin Cui if (!android::base::ReadFileToString(path, &wipe_package)) { 589747781433fb01f745529c7e9dd97c5599070ad0dTianjie Xu PLOG(ERROR) << "failed to read " << path; 5906faf0265c9b58db2c15b53f6d29025629d52f882Yabin Cui return false; 5916faf0265c9b58db2c15b53f6d29025629d52f882Yabin Cui } 5926faf0265c9b58db2c15b53f6d29025629d52f882Yabin Cui option = android::base::StringPrintf("--wipe_package_size=%zu", wipe_package.size()); 5936faf0265c9b58db2c15b53f6d29025629d52f882Yabin Cui } 5946faf0265c9b58db2c15b53f6d29025629d52f882Yabin Cui } 5953a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao 5963a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao // c8. setup the bcb command 597a58a6dbe3d06aace0d1419838e162aa5267a4fc0Yabin Cui std::string err; 5986faf0265c9b58db2c15b53f6d29025629d52f882Yabin Cui if (!write_bootloader_message(options, &err)) { 599747781433fb01f745529c7e9dd97c5599070ad0dTianjie Xu LOG(ERROR) << "failed to set bootloader message: " << err; 6003a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao write_status_to_socket(-1, socket); 6013a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao return false; 6022d46da57e19612b0a29ee0b8601146cf8fb9ff5eYabin Cui } 6036faf0265c9b58db2c15b53f6d29025629d52f882Yabin Cui if (!wipe_package.empty() && !write_wipe_package(wipe_package, &err)) { 604747781433fb01f745529c7e9dd97c5599070ad0dTianjie Xu PLOG(ERROR) << "failed to set wipe package: " << err; 6056faf0265c9b58db2c15b53f6d29025629d52f882Yabin Cui write_status_to_socket(-1, socket); 6066faf0265c9b58db2c15b53f6d29025629d52f882Yabin Cui return false; 6076faf0265c9b58db2c15b53f6d29025629d52f882Yabin Cui } 6083a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao // c10. send "100" status 6093a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao write_status_to_socket(100, socket); 6103a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao return true; 6112d46da57e19612b0a29ee0b8601146cf8fb9ff5eYabin Cui} 612c5631fc09666a9542d2882299d40500d18d1f68cDaniel Micay 6132d46da57e19612b0a29ee0b8601146cf8fb9ff5eYabin Cuistatic void usage(const char* exename) { 6142d46da57e19612b0a29ee0b8601146cf8fb9ff5eYabin Cui fprintf(stderr, "Usage of %s:\n", exename); 6152d46da57e19612b0a29ee0b8601146cf8fb9ff5eYabin Cui fprintf(stderr, "%s [<package_path> <map_file>] Uncrypt ota package.\n", exename); 6162d46da57e19612b0a29ee0b8601146cf8fb9ff5eYabin Cui fprintf(stderr, "%s --clear-bcb Clear BCB data in misc partition.\n", exename); 6172d46da57e19612b0a29ee0b8601146cf8fb9ff5eYabin Cui fprintf(stderr, "%s --setup-bcb Setup BCB data by command file.\n", exename); 6182d46da57e19612b0a29ee0b8601146cf8fb9ff5eYabin Cui} 6192d46da57e19612b0a29ee0b8601146cf8fb9ff5eYabin Cui 6202d46da57e19612b0a29ee0b8601146cf8fb9ff5eYabin Cuiint main(int argc, char** argv) { 62128c1e5d3aa9610db6e141380b1435937fc7f07dbTianjie Xu enum { UNCRYPT, SETUP_BCB, CLEAR_BCB, UNCRYPT_DEBUG } action; 6223a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao const char* input_path = nullptr; 6233a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao const char* map_file = CACHE_BLOCK_MAP.c_str(); 6243a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao 6253a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao if (argc == 2 && strcmp(argv[1], "--clear-bcb") == 0) { 6263a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao action = CLEAR_BCB; 6273a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao } else if (argc == 2 && strcmp(argv[1], "--setup-bcb") == 0) { 6283a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao action = SETUP_BCB; 6293a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao } else if (argc == 1) { 6303a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao action = UNCRYPT; 6313a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao } else if (argc == 3) { 6323a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao input_path = argv[1]; 6333a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao map_file = argv[2]; 63428c1e5d3aa9610db6e141380b1435937fc7f07dbTianjie Xu action = UNCRYPT_DEBUG; 6353a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao } else { 6363a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao usage(argv[0]); 6373a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao return 2; 6383a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao } 6393a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao 6403a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao if ((fstab = read_fstab()) == nullptr) { 64168fc81e860ab58a5147a48093e57daab38ee84a3Tianjie Xu log_uncrypt_error_code(kUncryptFstabReadError); 6423a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao return 1; 6433a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao } 6443a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao 64528c1e5d3aa9610db6e141380b1435937fc7f07dbTianjie Xu if (action == UNCRYPT_DEBUG) { 646747781433fb01f745529c7e9dd97c5599070ad0dTianjie Xu LOG(INFO) << "uncrypt called in debug mode, skip socket communication"; 64728c1e5d3aa9610db6e141380b1435937fc7f07dbTianjie Xu bool success = uncrypt_wrapper(input_path, map_file, -1); 64828c1e5d3aa9610db6e141380b1435937fc7f07dbTianjie Xu if (success) { 649747781433fb01f745529c7e9dd97c5599070ad0dTianjie Xu LOG(INFO) << "uncrypt succeeded"; 65028c1e5d3aa9610db6e141380b1435937fc7f07dbTianjie Xu } else{ 651747781433fb01f745529c7e9dd97c5599070ad0dTianjie Xu LOG(INFO) << "uncrypt failed"; 65228c1e5d3aa9610db6e141380b1435937fc7f07dbTianjie Xu } 65328c1e5d3aa9610db6e141380b1435937fc7f07dbTianjie Xu return success ? 0 : 1; 65428c1e5d3aa9610db6e141380b1435937fc7f07dbTianjie Xu } 65528c1e5d3aa9610db6e141380b1435937fc7f07dbTianjie Xu 6563a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao // c3. The socket is created by init when starting the service. uncrypt 6573a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao // will use the socket to communicate with its caller. 658d6ac68665dcef6c12d44ee6bcd7d938ab5028150Elliott Hughes android::base::unique_fd service_socket(android_get_control_socket(UNCRYPT_SOCKET.c_str())); 659d6ac68665dcef6c12d44ee6bcd7d938ab5028150Elliott Hughes if (service_socket == -1) { 660747781433fb01f745529c7e9dd97c5599070ad0dTianjie Xu PLOG(ERROR) << "failed to open socket \"" << UNCRYPT_SOCKET << "\""; 66168fc81e860ab58a5147a48093e57daab38ee84a3Tianjie Xu log_uncrypt_error_code(kUncryptSocketOpenError); 6623a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao return 1; 6633a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao } 664d6ac68665dcef6c12d44ee6bcd7d938ab5028150Elliott Hughes fcntl(service_socket, F_SETFD, FD_CLOEXEC); 6653a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao 666d6ac68665dcef6c12d44ee6bcd7d938ab5028150Elliott Hughes if (listen(service_socket, 1) == -1) { 667747781433fb01f745529c7e9dd97c5599070ad0dTianjie Xu PLOG(ERROR) << "failed to listen on socket " << service_socket.get(); 66868fc81e860ab58a5147a48093e57daab38ee84a3Tianjie Xu log_uncrypt_error_code(kUncryptSocketListenError); 6693a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao return 1; 6703a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao } 6713a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao 672d6ac68665dcef6c12d44ee6bcd7d938ab5028150Elliott Hughes android::base::unique_fd socket_fd(accept4(service_socket, nullptr, nullptr, SOCK_CLOEXEC)); 673d6ac68665dcef6c12d44ee6bcd7d938ab5028150Elliott Hughes if (socket_fd == -1) { 674747781433fb01f745529c7e9dd97c5599070ad0dTianjie Xu PLOG(ERROR) << "failed to accept on socket " << service_socket.get(); 67568fc81e860ab58a5147a48093e57daab38ee84a3Tianjie Xu log_uncrypt_error_code(kUncryptSocketAcceptError); 6763a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao return 1; 6773a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao } 6783a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao 6793a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao bool success = false; 6803a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao switch (action) { 6813a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao case UNCRYPT: 682d6ac68665dcef6c12d44ee6bcd7d938ab5028150Elliott Hughes success = uncrypt_wrapper(input_path, map_file, socket_fd); 6833a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao break; 6843a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao case SETUP_BCB: 685d6ac68665dcef6c12d44ee6bcd7d938ab5028150Elliott Hughes success = setup_bcb(socket_fd); 6863a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao break; 6873a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao case CLEAR_BCB: 688d6ac68665dcef6c12d44ee6bcd7d938ab5028150Elliott Hughes success = clear_bcb(socket_fd); 6893a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao break; 6903a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao default: // Should never happen. 691747781433fb01f745529c7e9dd97c5599070ad0dTianjie Xu LOG(ERROR) << "Invalid uncrypt action code: " << action; 6923a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao return 1; 6933a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao } 6943a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao 6953a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao // c13. Read a 4-byte code from the client before uncrypt exits. This is to 6963a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao // ensure the client to receive the last status code before the socket gets 6973a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao // destroyed. 6983a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao int code; 699d6ac68665dcef6c12d44ee6bcd7d938ab5028150Elliott Hughes if (android::base::ReadFully(socket_fd, &code, 4)) { 700747781433fb01f745529c7e9dd97c5599070ad0dTianjie Xu LOG(INFO) << " received " << code << ", exiting now"; 7013a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao } else { 702747781433fb01f745529c7e9dd97c5599070ad0dTianjie Xu PLOG(ERROR) << "failed to read the code"; 703381f455cac0905b023dde79625b06c27b6165dd0Tao Bao } 7043a2bb594df4b48c6afb1f029041dd6db0735de58Tao Bao return success ? 0 : 1; 70576adfc5309936a07218ce53b5ab284d5746fa84cDoug Zongker} 706