/*This file has been modified by Unisoc (Shanghai) Technologies Co., Ltd in 2024.
*
* Copyright (C) 2007
The Android Open Source Project
*
* Licensed under
the Apache License, Versi
on 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 C
ONDITI
ONS OF ANY KIND, ei
ther express or implied.
* See
the License for
the specific language governing permissi
ons and
* limitati
ons under
the License.
*/
#include "recovery_utils/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/file.h>
#include <android-
base/logging.h>
#include <android-
base/properties.h>
#include <android-
base/stringprintf.h>
#include <android-
base/unique_fd.h>
#include <ext4_utils/ext4_utils.h>
#include <ext4_utils/wipe.h>
#include <fs_mgr.h>
#include <fs_mgr/roots.h>
#include "otautil/sysutil.h"
//hook
#include <include/hook/librecovery_utils_stubs.h>
using android::fs_mgr::Fstab;
using android::fs_mgr::FstabEntry;
using android::fs_mgr::ReadDefaultFstab;
using android::
base::ReadFileToString;
static Fstab fstab;
c
onstexpr c
onst char* CACHE_ROOT = "/cache";
void load_volume_table() {
if (!ReadDefaultFstab(&fstab)) {
LOG(ERROR) << "Failed to read default fstab";
return;
}
fstab.emplace_back(FstabEntry{
.blk_device = "ramdisk",
.mount_point = "/tmp",
.fs_type = "ramdisk",
.length = 0,
});
std::cout << "recovery filesystem table" << std::endl << "=========================" << std::endl;
for (size_t i = 0; i < fstab.size(); ++i) {
auto& entry = fstab[i];
if (strcmp(entry.mount_point.c_str(), "/storage/sdcard0") == 0)
load_volume_table_impl(entry);
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(c
onst 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(c
onst std::string& path, c
onst std::string& mount_point) {
return android::fs_mgr::EnsurePathMounted(&fstab, path, mount_point) ? 0 : -1;
}
int ensure_path_mounted(c
onst std::string& path) {
// Mount at
the default mount point.
return android::fs_mgr::EnsurePathMounted(&fstab, path) ? 0 : -1;
}
int ensure_path_unmounted(c
onst std::string& path) {
return android::fs_mgr::EnsurePathUnmounted(&fstab, path) ? 0 : -1;
}
static int exec_cmd(c
onst std::vector<std::string>& args) {
CHECK(!args.empty());
auto argv = StringVectorT
oNullTerminatedArray(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;
}
//#wangfengqiu@HQ, 2024/03/28, Add for: nuovo shield recovery clear data plan start
bool forbiddenRecoveryByReserveProperty() {
std::string c
ontent;
std::vector<std::string> reserve2_property_path = {
"/nuovo/productinfo/nuovo_forbidden_recovery.prop", // 原Nuovo路径
"/nuovo/productinfo/MACROPAY_forbidden_recovery.prop", // 新增MACROPAY路径
};
//Fstab defFstab;
/*if (!ReadDefaultFstab(&defFstab)) {
printf("Failed to read default fstab productinfo\n");
return false;
}*/
//for (size_t i = 0; i < defFstab.size(); ++i) {
//c
onst auto& entry = defFstab[i];
//std::string::size_type pos = entry.blk_device.find("productinfo");
//if ((pos != std::string::npos) && (ensure_path_mounted(entry.mount_point.c_str()) == 0)) {
//printf("mount productinfo success,mount point is %s \n", entry.mount_point.c_str());
for (c
onst auto& path : reserve2_property_path) {
if (android::
base::ReadFileToString(path, &c
ontent)
&& (c
ontent.find("opporeserve.sys.custom.recovery.forbidden=1") != std::string::npos)) {
printf("found forbidden recovery prop in %s! \n", path.c_str());
return true;
}
/* if (android::
base::ReadFileToString(reserve2_property_path, &c
ontent) &&
(c
ontent.find("opporeserve.sys.custom.recovery.forbidden=1") != std::string::npos)) {
printf("reserve found forbidden recovery prop! \n");
return true;
}*/
//break;
//}
//}
}
printf("no forbidden prop found in reserve!\n");
return false;
}
//end of Start specific code
//#endif /* VENDOR_EDIT */
int format_volume(c
onst std::string& volume, c
onst std::string& directory,
std::string_view
new_fstype) {
c
onst 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;
}
bool needs_casefold = false;
if (volume == "/data") {
needs_casefold = android::
base::GetBoolProperty("external_storage.casefold.enabled", false);
}
int64_t length = 0;
if (v->length > 0) {
length = v->length;
} else if (v->length < 0) {
android::
base::unique_fd fd(open(v->blk_device.c_str(), O_RD
ONLY));
if (fd == -1) {
PLOG(ERROR) << "format_volume: failed to open " << v->blk_device;
return -1;
}
length = get_file_size(fd.get(), -v->length);
if (length <= 0) {
LOG(ERROR) << "get_file_size: invalid size " << length << " for " << v->blk_device;
return -1;
}
}
// If
the raw disk will be used as a metadata encrypted device mapper target,
// next boot will do encrypt_in_place
the raw disk. While fs_mgr mounts /data
// as RO to avoid write file operati
ons before encrypt_inplace, this code path
// is not well tested so we would like to avoid it if possible. For safety,
// let vold do
the formatting
on boot for metadata encrypted devices, except
// when user specified a
new fstype. Because init formats /data according
// to fstab, it's difficult to override
the fstab in init.
if (!v->metadata_key_dir.empty() && length == 0 &&
new_fstype.empty()) {
android::
base::unique_fd fd(open(v->blk_device.c_str(), O_RDWR));
if (fd == -1) {
PLOG(ERROR) << "format_volume: failed to open " << v->blk_device;
return -1;
}
int64_t device_size = get_file_size(fd.get(), 0);
if (device_size > 0 && !wipe_block_device(fd.get(), device_size)) {
LOG(INFO) << "format_volume: wipe metadata encrypted " << v->blk_device << " with size "
<< device_size;
return 0;
}
}
if ((v->fs_type == "ext4" &&
new_fstype.empty()) ||
new_fstype == "ext4") {
LOG(INFO) << "Formatting " << v->blk_device << " as ext4";
static c
onstexpr int kBlockSize = 4096;
std::vector<std::string> mke2fs_args = {
"/system/bin/mke2fs", "-F", "-t", "ext4", "-b", std::to_string(kBlockSize),
};
// Following is added for Project ID's quota as
they require wider inodes.
//
The Quotas
themselves are enabled by tune2fs
on boot.
mke2fs_args.push_back("-I");
mke2fs_args.push_back("512");
if (v->fs_mgr_flags.ext_meta_csum) {
mke2fs_args.push_back("-O");
mke2fs_args.push_back("metadata_csum");
mke2fs_args.push_back("-O");
mke2fs_args.push_back("64bit");
mke2fs_args.push_back("-O");
mke2fs_args.push_back("extent");
}
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.
LOG(INFO) << "Formatting " << v->blk_device << " as f2fs";
static c
onstexpr int kSectorSize = 4096;
std::vector<std::string> make_f2fs_cmd = {
"/system/bin/make_f2fs",
"-g",
"android",
};
make_f2fs_cmd.push_back("-O");
make_f2fs_cmd.push_back("project_quota,extra_attr");
if (needs_casefold) {
make_f2fs_cmd.push_back("-O");
make_f2fs_cmd.push_back("casefold");
make_f2fs_cmd.push_back("-C");
make_f2fs_cmd.push_back("utf8");
}
if (v->fs_mgr_flags.fs_compress) {
make_f2fs_cmd.push_back("-O");
make_f2fs_cmd.push_back("compressi
on");
make_f2fs_cmd.push_back("-O");
make_f2fs_cmd.push_back("extra_attr");
}
make_f2fs_cmd.push_back(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(c
onst 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 (c
onst FstabEntry& entry : fstab) {
// We d
on't want to do anything with "/".
if (entry.mount_point == "/") {
c
ontinue;
}
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;
}
总览页的备注列从差异top改成增大大于1M的top5,并且只显示深层路径文件,例如
修改前：
"1. my_product: +730.66MB
2. my_product/app: +322.14MB
3. my_product/priv-app: +277.58MB
4. my_product/del-app-pre: +193.83MB
5. my_product/priv-app/GoogleVelvet_CTS: +187.39MB"
修改后：
1. my_product/priv-app/GoogleVelvet_CTS: +187.39MB"
博客内容提及感谢kommit，但未提供更多信息技术相关关键信息。
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