1 /* 2 * Copyright (C) 2015 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #include "F2fs.h" 18 #include "Utils.h" 19 20 #include <base/logging.h> 21 #include <base/stringprintf.h> 22 23 #include <vector> 24 #include <string> 25 26 #include <sys/mount.h> 27 28 using android::base::StringPrintf; 29 30 namespace android { 31 namespace vold { 32 namespace f2fs { 33 34 static const char* kMkfsPath = "/system/bin/make_f2fs"; 35 static const char* kFsckPath = "/system/bin/fsck.f2fs"; 36 37 bool IsSupported() { 38 return access(kMkfsPath, X_OK) == 0 39 && access(kFsckPath, X_OK) == 0 40 && IsFilesystemSupported("f2fs"); 41 } 42 43 status_t Check(const std::string& source) { 44 std::vector<std::string> cmd; 45 cmd.push_back(kFsckPath); 46 cmd.push_back("-f"); 47 cmd.push_back(source); 48 49 // f2fs devices are currently always trusted 50 return ForkExecvp(cmd, sFsckContext); 51 } 52 53 status_t Mount(const std::string& source, const std::string& target) { 54 const char* c_source = source.c_str(); 55 const char* c_target = target.c_str(); 56 unsigned long flags = MS_NOATIME | MS_NODEV | MS_NOSUID | MS_DIRSYNC; 57 58 int res = mount(c_source, c_target, "f2fs", flags, NULL); 59 if (res != 0) { 60 PLOG(ERROR) << "Failed to mount " << source; 61 if (errno == EROFS) { 62 res = mount(c_source, c_target, "f2fs", flags | MS_RDONLY, NULL); 63 if (res != 0) { 64 PLOG(ERROR) << "Failed to mount read-only " << source; 65 } 66 } 67 } 68 69 return res; 70 } 71 72 status_t Format(const std::string& source) { 73 std::vector<std::string> cmd; 74 cmd.push_back(kMkfsPath); 75 cmd.push_back(source); 76 77 return ForkExecvp(cmd); 78 } 79 80 } // namespace f2fs 81 } // namespace vold 82 } // namespace android 83
