de2d6201ab
Do our own fork/exec rather than using a library. This leads to many improvements: - unite the output recording path with the other path - never concatenate arguments with spaces - never use the shell - move setexeccon after fork, so we don't need to take the lock - general code refactor while we're there My tests: - Ensure Marlin device boots and vold_prepare_subdirs is called successfully - Try adb shell sm set-virtual-disk true, see that eg sgdisk output is logged. weilongping@huawei.com's tests: - unlock a user's de and ce directory; - connect to a OTG storage device or a sdcard and ensure the mount logic be successful Bug: 26735063 Bug: 113796163 Test: details in commit Change-Id: I0976413529d7cbeebf5b8649660a385f9b036f04
98 lines
2.6 KiB
C++
98 lines
2.6 KiB
C++
/*
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* Copyright (C) 2015 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "F2fs.h"
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#include "Utils.h"
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#include <android-base/logging.h>
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#include <android-base/properties.h>
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#include <android-base/stringprintf.h>
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#include <fscrypt/fscrypt.h>
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#include <string>
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#include <vector>
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#include <sys/mount.h>
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using android::base::StringPrintf;
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namespace android {
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namespace vold {
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namespace f2fs {
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static const char* kMkfsPath = "/system/bin/make_f2fs";
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static const char* kFsckPath = "/system/bin/fsck.f2fs";
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bool IsSupported() {
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return access(kMkfsPath, X_OK) == 0 && access(kFsckPath, X_OK) == 0 &&
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IsFilesystemSupported("f2fs");
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}
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status_t Check(const std::string& source) {
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std::vector<std::string> cmd;
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cmd.push_back(kFsckPath);
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cmd.push_back("-a");
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cmd.push_back(source);
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// f2fs devices are currently always trusted
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return ForkExecvp(cmd, nullptr, sFsckContext);
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}
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status_t Mount(const std::string& source, const std::string& target) {
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const char* c_source = source.c_str();
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const char* c_target = target.c_str();
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unsigned long flags = MS_NOATIME | MS_NODEV | MS_NOSUID | MS_DIRSYNC;
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int res = mount(c_source, c_target, "f2fs", flags, NULL);
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if (res != 0) {
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PLOG(ERROR) << "Failed to mount " << source;
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if (errno == EROFS) {
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res = mount(c_source, c_target, "f2fs", flags | MS_RDONLY, NULL);
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if (res != 0) {
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PLOG(ERROR) << "Failed to mount read-only " << source;
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}
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}
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}
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return res;
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}
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status_t Format(const std::string& source) {
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std::vector<std::string> cmd;
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cmd.push_back(kMkfsPath);
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cmd.push_back("-f");
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cmd.push_back("-d1");
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if (android::base::GetBoolProperty("vold.has_quota", false)) {
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cmd.push_back("-O");
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cmd.push_back("quota");
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}
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if (fscrypt_is_native()) {
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cmd.push_back("-O");
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cmd.push_back("encrypt");
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}
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cmd.push_back("-O");
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cmd.push_back("verity");
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cmd.push_back(source);
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return ForkExecvp(cmd);
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}
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} // namespace f2fs
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} // namespace vold
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} // namespace android
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