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/*
* Copyright (C) 2015 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 "F2fs.h"
#include "Utils.h"
#include <android-base/logging.h>
#include <android-base/properties.h>
#include <android-base/stringprintf.h>
#include <fscrypt/fscrypt.h>
#include <private/android_filesystem_config.h>
#include <string>
#include <vector>
#include <sys/stat.h>
#include <sys/mount.h>
using android::base::StringPrintf;
namespace android {
namespace vold {
namespace f2fs {
static const char* kMkfsPath = "/system/bin/make_f2fs";
static const char* kFsckPath = "/system/bin/fsck.f2fs";
bool IsSupported() {
return access(kMkfsPath, X_OK) == 0 && access(kFsckPath, X_OK) == 0 &&
IsFilesystemSupported("f2fs");
}
status_t Check(const std::string& source, bool trusted) {
std::vector<std::string> cmd;
cmd.push_back(kFsckPath);
cmd.push_back("-a");
cmd.push_back(source);
return ForkExecvp(cmd, nullptr, trusted ? sFsckContext : sFsckUntrustedContext);
}
status_t Mount(const std::string& source, const std::string& target,
const std::string& opts /* = "" */, bool trusted, bool portable) {
std::string data(opts);
if (portable) {
if (!data.empty()) {
data += ",";
}
data += "context=u:object_r:sdcard_posix:s0";
}
const char* c_source = source.c_str();
const char* c_target = target.c_str();
const char* c_data = data.c_str();
unsigned long flags = MS_NOATIME | MS_NODEV | MS_NOSUID;
// Only use MS_DIRSYNC if we're not mounting adopted storage
if (!trusted) {
flags |= MS_DIRSYNC;
}
int res = mount(c_source, c_target, "f2fs", flags, c_data);
if (portable && res == 0) {
chown(c_target, AID_MEDIA_RW, AID_MEDIA_RW);
chmod(c_target, 0775);
}
if (res != 0) {
PLOG(ERROR) << "Failed to mount " << source;
if (errno == EROFS) {
res = mount(c_source, c_target, "f2fs", flags | MS_RDONLY, c_data);
if (res != 0) {
PLOG(ERROR) << "Failed to mount read-only " << source;
}
}
}
return res;
}
status_t Format(const std::string& source) {
std::vector<std::string> cmd;
cmd.push_back(kMkfsPath);
cmd.push_back("-f");
cmd.push_back("-d1");
if (android::base::GetBoolProperty("vold.has_quota", false)) {
cmd.push_back("-O");
cmd.push_back("quota");
}
if (fscrypt_is_native()) {
cmd.push_back("-O");
cmd.push_back("encrypt");
}
cmd.push_back("-O");
cmd.push_back("verity");
cmd.push_back(source);
return ForkExecvp(cmd);
}
} // namespace f2fs
} // namespace vold
} // namespace android
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