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-rw-r--r--otautil/roots.cpp279
1 files changed, 0 insertions, 279 deletions
diff --git a/otautil/roots.cpp b/otautil/roots.cpp
deleted file mode 100644
index e098b4b77..000000000
--- a/otautil/roots.cpp
+++ /dev/null
@@ -1,279 +0,0 @@
-/*
- * Copyright (C) 2007 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include "otautil/roots.h"
-
-#include <fcntl.h>
-#include <stdint.h>
-#include <stdlib.h>
-#include <string.h>
-#include <sys/stat.h>
-#include <sys/types.h>
-#include <sys/wait.h>
-#include <unistd.h>
-
-#include <iostream>
-#include <string>
-#include <vector>
-
-#include <android-base/logging.h>
-#include <android-base/stringprintf.h>
-#include <android-base/unique_fd.h>
-#include <cryptfs.h>
-#include <ext4_utils/wipe.h>
-#include <fs_mgr.h>
-#include <fs_mgr/roots.h>
-
-#include "otautil/sysutil.h"
-
-using android::fs_mgr::Fstab;
-using android::fs_mgr::FstabEntry;
-using android::fs_mgr::ReadDefaultFstab;
-
-static Fstab fstab;
-
-constexpr const char* CACHE_ROOT = "/cache";
-
-void load_volume_table() {
- if (!ReadDefaultFstab(&fstab)) {
- LOG(ERROR) << "Failed to read default fstab";
- return;
- }
-
- fstab.emplace_back(FstabEntry{
- .mount_point = "/tmp", .fs_type = "ramdisk", .blk_device = "ramdisk", .length = 0 });
-
- std::cout << "recovery filesystem table" << std::endl << "=========================" << std::endl;
- for (size_t i = 0; i < fstab.size(); ++i) {
- const auto& entry = fstab[i];
- std::cout << " " << i << " " << entry.mount_point << " "
- << " " << entry.fs_type << " " << entry.blk_device << " " << entry.length
- << std::endl;
- }
- std::cout << std::endl;
-}
-
-Volume* volume_for_mount_point(const std::string& mount_point) {
- return android::fs_mgr::GetEntryForMountPoint(&fstab, mount_point);
-}
-
-// Mount the volume specified by path at the given mount_point.
-int ensure_path_mounted_at(const std::string& path, const std::string& mount_point) {
- return android::fs_mgr::EnsurePathMounted(&fstab, path, mount_point) ? 0 : -1;
-}
-
-int ensure_path_mounted(const std::string& path) {
- // Mount at the default mount point.
- return android::fs_mgr::EnsurePathMounted(&fstab, path) ? 0 : -1;
-}
-
-int ensure_path_unmounted(const std::string& path) {
- return android::fs_mgr::EnsurePathUnmounted(&fstab, path) ? 0 : -1;
-}
-
-static int exec_cmd(const std::vector<std::string>& args) {
- CHECK(!args.empty());
- auto argv = StringVectorToNullTerminatedArray(args);
-
- pid_t child;
- if ((child = fork()) == 0) {
- execv(argv[0], argv.data());
- _exit(EXIT_FAILURE);
- }
-
- int status;
- waitpid(child, &status, 0);
- if (!WIFEXITED(status) || WEXITSTATUS(status) != 0) {
- LOG(ERROR) << args[0] << " failed with status " << WEXITSTATUS(status);
- }
- return WEXITSTATUS(status);
-}
-
-static int64_t get_file_size(int fd, uint64_t reserve_len) {
- struct stat buf;
- int ret = fstat(fd, &buf);
- if (ret) return 0;
-
- int64_t computed_size;
- if (S_ISREG(buf.st_mode)) {
- computed_size = buf.st_size - reserve_len;
- } else if (S_ISBLK(buf.st_mode)) {
- uint64_t block_device_size = get_block_device_size(fd);
- if (block_device_size < reserve_len ||
- block_device_size > std::numeric_limits<int64_t>::max()) {
- computed_size = 0;
- } else {
- computed_size = block_device_size - reserve_len;
- }
- } else {
- computed_size = 0;
- }
-
- return computed_size;
-}
-
-int format_volume(const std::string& volume, const std::string& directory) {
- const FstabEntry* v = android::fs_mgr::GetEntryForPath(&fstab, volume);
- if (v == nullptr) {
- LOG(ERROR) << "unknown volume \"" << volume << "\"";
- return -1;
- }
- if (v->fs_type == "ramdisk") {
- LOG(ERROR) << "can't format_volume \"" << volume << "\"";
- return -1;
- }
- if (v->mount_point != volume) {
- LOG(ERROR) << "can't give path \"" << volume << "\" to format_volume";
- return -1;
- }
- if (ensure_path_unmounted(volume) != 0) {
- LOG(ERROR) << "format_volume: Failed to unmount \"" << v->mount_point << "\"";
- return -1;
- }
- if (v->fs_type != "ext4" && v->fs_type != "f2fs") {
- LOG(ERROR) << "format_volume: fs_type \"" << v->fs_type << "\" unsupported";
- return -1;
- }
-
- // If there's a key_loc that looks like a path, it should be a block device for storing encryption
- // metadata. Wipe it too.
- if (!v->key_loc.empty() && v->key_loc[0] == '/') {
- LOG(INFO) << "Wiping " << v->key_loc;
- int fd = open(v->key_loc.c_str(), O_WRONLY | O_CREAT, 0644);
- if (fd == -1) {
- PLOG(ERROR) << "format_volume: Failed to open " << v->key_loc;
- return -1;
- }
- wipe_block_device(fd, get_file_size(fd));
- close(fd);
- }
-
- int64_t length = 0;
- if (v->length > 0) {
- length = v->length;
- } else if (v->length < 0 || v->key_loc == "footer") {
- android::base::unique_fd fd(open(v->blk_device.c_str(), O_RDONLY));
- if (fd == -1) {
- PLOG(ERROR) << "format_volume: failed to open " << v->blk_device;
- return -1;
- }
- length = get_file_size(fd.get(), v->length ? -v->length : CRYPT_FOOTER_OFFSET);
- if (length <= 0) {
- LOG(ERROR) << "get_file_size: invalid size " << length << " for " << v->blk_device;
- return -1;
- }
- }
-
- if (v->fs_type == "ext4") {
- static constexpr int kBlockSize = 4096;
- std::vector<std::string> mke2fs_args = {
- "/system/bin/mke2fs", "-F", "-t", "ext4", "-b", std::to_string(kBlockSize),
- };
-
- int raid_stride = v->logical_blk_size / kBlockSize;
- int raid_stripe_width = v->erase_blk_size / kBlockSize;
- // stride should be the max of 8KB and logical block size
- if (v->logical_blk_size != 0 && v->logical_blk_size < 8192) {
- raid_stride = 8192 / kBlockSize;
- }
- if (v->erase_blk_size != 0 && v->logical_blk_size != 0) {
- mke2fs_args.push_back("-E");
- mke2fs_args.push_back(
- android::base::StringPrintf("stride=%d,stripe-width=%d", raid_stride, raid_stripe_width));
- }
- mke2fs_args.push_back(v->blk_device);
- if (length != 0) {
- mke2fs_args.push_back(std::to_string(length / kBlockSize));
- }
-
- int result = exec_cmd(mke2fs_args);
- if (result == 0 && !directory.empty()) {
- std::vector<std::string> e2fsdroid_args = {
- "/system/bin/e2fsdroid", "-e", "-f", directory, "-a", volume, v->blk_device,
- };
- result = exec_cmd(e2fsdroid_args);
- }
-
- if (result != 0) {
- PLOG(ERROR) << "format_volume: Failed to make ext4 on " << v->blk_device;
- return -1;
- }
- return 0;
- }
-
- // Has to be f2fs because we checked earlier.
- static constexpr int kSectorSize = 4096;
- std::vector<std::string> make_f2fs_cmd = {
- "/system/bin/make_f2fs",
- "-g",
- "android",
- v->blk_device,
- };
- if (length >= kSectorSize) {
- make_f2fs_cmd.push_back(std::to_string(length / kSectorSize));
- }
-
- if (exec_cmd(make_f2fs_cmd) != 0) {
- PLOG(ERROR) << "format_volume: Failed to make_f2fs on " << v->blk_device;
- return -1;
- }
- if (!directory.empty()) {
- std::vector<std::string> sload_f2fs_cmd = {
- "/system/bin/sload_f2fs", "-f", directory, "-t", volume, v->blk_device,
- };
- if (exec_cmd(sload_f2fs_cmd) != 0) {
- PLOG(ERROR) << "format_volume: Failed to sload_f2fs on " << v->blk_device;
- return -1;
- }
- }
- return 0;
-}
-
-int format_volume(const std::string& volume) {
- return format_volume(volume, "");
-}
-
-int setup_install_mounts() {
- if (fstab.empty()) {
- LOG(ERROR) << "can't set up install mounts: no fstab loaded";
- return -1;
- }
- for (const FstabEntry& entry : fstab) {
- // We don't want to do anything with "/".
- if (entry.mount_point == "/") {
- continue;
- }
-
- if (entry.mount_point == "/tmp" || entry.mount_point == "/cache") {
- if (ensure_path_mounted(entry.mount_point) != 0) {
- LOG(ERROR) << "Failed to mount " << entry.mount_point;
- return -1;
- }
- } else {
- if (ensure_path_unmounted(entry.mount_point) != 0) {
- LOG(ERROR) << "Failed to unmount " << entry.mount_point;
- return -1;
- }
- }
- }
- return 0;
-}
-
-bool HasCache() {
- CHECK(!fstab.empty());
- static bool has_cache = volume_for_mount_point(CACHE_ROOT) != nullptr;
- return has_cache;
-}
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