109 lines
3 KiB
C++
109 lines
3 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 "Exfat.h"
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#include "Utils.h"
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#include <android-base/logging.h>
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#include <android-base/stringprintf.h>
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#include <vector>
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#include <string>
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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 exfat {
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#ifdef MINIVOLD
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static const char* kMkfsPath = "/sbin/mkfs.exfat";
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static const char* kFsckPath = "/sbin/fsck.exfat";
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#ifdef CONFIG_KERNEL_HAVE_EXFAT
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static const char* kMountPath = "/sbin/mount";
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#else
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static const char* kMountPath = "/sbin/mount.exfat";
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#endif
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#else
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static const char* kMkfsPath = "/system/bin/mkfs.exfat";
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static const char* kFsckPath = "/system/bin/fsck.exfat";
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#ifdef CONFIG_KERNEL_HAVE_EXFAT
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static const char* kMountPath = "/system/bin/mount";
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#else
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static const char* kMountPath = "/system/bin/mount.exfat";
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#endif
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#endif
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bool IsSupported() {
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return access(kMkfsPath, X_OK) == 0
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&& access(kFsckPath, X_OK) == 0
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&& access(kMountPath, X_OK) == 0
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&& IsFilesystemSupported("exfat");
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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(source);
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// Exfat devices are currently always untrusted
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return ForkExecvp(cmd, sFsckUntrustedContext);
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}
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status_t Mount(const std::string& source, const std::string& target, bool ro,
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bool remount, bool executable, int ownerUid, int ownerGid, int permMask) {
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char mountData[255];
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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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sprintf(mountData,
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#ifdef CONFIG_KERNEL_HAVE_EXFAT
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"noatime,nodev,nosuid,uid=%d,gid=%d,fmask=%o,dmask=%o,%s,%s",
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#else
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"noatime,nodev,nosuid,dirsync,uid=%d,gid=%d,fmask=%o,dmask=%o,%s,%s",
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#endif
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ownerUid, ownerGid, permMask, permMask,
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(executable ? "exec" : "noexec"),
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(ro ? "ro" : "rw"));
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std::vector<std::string> cmd;
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cmd.push_back(kMountPath);
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#ifdef CONFIG_KERNEL_HAVE_EXFAT
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cmd.push_back("-t");
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cmd.push_back("exfat");
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#endif
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cmd.push_back("-o");
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cmd.push_back(mountData);
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cmd.push_back(c_source);
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cmd.push_back(c_target);
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return ForkExecvp(cmd);
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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(source);
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return ForkExecvp(cmd);
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}
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} // namespace exfat
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} // namespace vold
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} // namespace android
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