Jeff Sharkey | d0640f6 | 2015-05-21 22:35:42 -0700 | [diff] [blame] | 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 |