Chris Fries | 79f3384 | 2013-09-05 13:19:21 -0500 | [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 <stdio.h> |
| 18 | #include <unistd.h> |
| 19 | #include <sys/types.h> |
| 20 | #include <sys/stat.h> |
| 21 | #include <fcntl.h> |
| 22 | #include <sys/wait.h> |
| 23 | #include <errno.h> |
| 24 | #include <cutils/partition_utils.h> |
| 25 | #include <sys/mount.h> |
William Roberts | 875476d | 2016-05-13 11:19:42 -0700 | [diff] [blame] | 26 | |
Daniel Rosenberg | 29bc5d4 | 2020-01-31 18:27:41 -0800 | [diff] [blame] | 27 | #include <android-base/properties.h> |
Tom Cherry | c3e7bd3 | 2018-12-06 10:28:26 -0800 | [diff] [blame] | 28 | #include <android-base/unique_fd.h> |
Tao Bao | 6d881d6 | 2016-10-05 17:53:30 -0700 | [diff] [blame] | 29 | #include <ext4_utils/ext4.h> |
Jin Qian | f71bc0c | 2017-04-21 16:56:34 -0700 | [diff] [blame] | 30 | #include <ext4_utils/ext4_utils.h> |
| 31 | #include <logwrap/logwrap.h> |
William Roberts | 875476d | 2016-05-13 11:19:42 -0700 | [diff] [blame] | 32 | #include <selinux/android.h> |
Jin Qian | f71bc0c | 2017-04-21 16:56:34 -0700 | [diff] [blame] | 33 | #include <selinux/label.h> |
| 34 | #include <selinux/selinux.h> |
William Roberts | 875476d | 2016-05-13 11:19:42 -0700 | [diff] [blame] | 35 | |
Chris Fries | 79f3384 | 2013-09-05 13:19:21 -0500 | [diff] [blame] | 36 | #include "fs_mgr_priv.h" |
| 37 | |
Tom Cherry | c3e7bd3 | 2018-12-06 10:28:26 -0800 | [diff] [blame] | 38 | using android::base::unique_fd; |
Chris Fries | 79f3384 | 2013-09-05 13:19:21 -0500 | [diff] [blame] | 39 | |
Tom Cherry | a3530e6 | 2019-01-30 13:25:35 -0800 | [diff] [blame] | 40 | // Realistically, this file should be part of the android::fs_mgr namespace; |
| 41 | using namespace android::fs_mgr; |
| 42 | |
Tom Cherry | c3e7bd3 | 2018-12-06 10:28:26 -0800 | [diff] [blame] | 43 | static int get_dev_sz(const std::string& fs_blkdev, uint64_t* dev_sz) { |
| 44 | unique_fd fd(TEMP_FAILURE_RETRY(open(fs_blkdev.c_str(), O_RDONLY | O_CLOEXEC))); |
| 45 | |
| 46 | if (fd < 0) { |
bowgotsai | 47878de | 2017-01-23 14:04:34 +0800 | [diff] [blame] | 47 | PERROR << "Cannot open block device"; |
Chris Fries | 79f3384 | 2013-09-05 13:19:21 -0500 | [diff] [blame] | 48 | return -1; |
| 49 | } |
| 50 | |
Jaegeuk Kim | a367430 | 2017-06-12 16:57:56 -0700 | [diff] [blame] | 51 | if ((ioctl(fd, BLKGETSIZE64, dev_sz)) == -1) { |
bowgotsai | 47878de | 2017-01-23 14:04:34 +0800 | [diff] [blame] | 52 | PERROR << "Cannot get block device size"; |
Chris Fries | 79f3384 | 2013-09-05 13:19:21 -0500 | [diff] [blame] | 53 | return -1; |
| 54 | } |
| 55 | |
Jaegeuk Kim | a367430 | 2017-06-12 16:57:56 -0700 | [diff] [blame] | 56 | return 0; |
| 57 | } |
| 58 | |
Tom Cherry | c3e7bd3 | 2018-12-06 10:28:26 -0800 | [diff] [blame] | 59 | static int format_ext4(const std::string& fs_blkdev, const std::string& fs_mnt_point, |
Eric Biggers | 4d0c5ef | 2021-11-08 16:38:54 -0800 | [diff] [blame] | 60 | bool needs_projid, bool needs_metadata_csum) { |
Jaegeuk Kim | a367430 | 2017-06-12 16:57:56 -0700 | [diff] [blame] | 61 | uint64_t dev_sz; |
| 62 | int rc = 0; |
Jaegeuk Kim | a367430 | 2017-06-12 16:57:56 -0700 | [diff] [blame] | 63 | |
| 64 | rc = get_dev_sz(fs_blkdev, &dev_sz); |
| 65 | if (rc) { |
| 66 | return rc; |
| 67 | } |
Chris Fries | 79f3384 | 2013-09-05 13:19:21 -0500 | [diff] [blame] | 68 | |
Jin Qian | f71bc0c | 2017-04-21 16:56:34 -0700 | [diff] [blame] | 69 | /* Format the partition using the calculated length */ |
Jin Qian | f71bc0c | 2017-04-21 16:56:34 -0700 | [diff] [blame] | 70 | |
| 71 | std::string size_str = std::to_string(dev_sz / 4096); |
Jin Qian | f71bc0c | 2017-04-21 16:56:34 -0700 | [diff] [blame] | 72 | |
Daniel Rosenberg | 29bc5d4 | 2020-01-31 18:27:41 -0800 | [diff] [blame] | 73 | std::vector<const char*> mke2fs_args = {"/system/bin/mke2fs", "-t", "ext4", "-b", "4096"}; |
| 74 | |
| 75 | // Project ID's require wider inodes. The Quotas themselves are enabled by tune2fs during boot. |
| 76 | if (needs_projid) { |
| 77 | mke2fs_args.push_back("-I"); |
| 78 | mke2fs_args.push_back("512"); |
| 79 | } |
| 80 | // casefolding is enabled via tune2fs during boot. |
| 81 | |
Jaegeuk Kim | 78f040c | 2020-02-11 15:22:46 -0800 | [diff] [blame] | 82 | if (needs_metadata_csum) { |
| 83 | mke2fs_args.push_back("-O"); |
| 84 | mke2fs_args.push_back("metadata_csum"); |
| 85 | // tune2fs recommends to enable 64bit and extent: |
| 86 | // Extents are not enabled. The file extent tree can be checksummed, |
| 87 | // whereas block maps cannot. Not enabling extents reduces the coverage |
| 88 | // of metadata checksumming. Re-run with -O extent to rectify. |
| 89 | // 64-bit filesystem support is not enabled. The larger fields afforded |
| 90 | // by this feature enable full-strength checksumming. Run resize2fs -b to rectify. |
| 91 | mke2fs_args.push_back("-O"); |
| 92 | mke2fs_args.push_back("64bit"); |
| 93 | mke2fs_args.push_back("-O"); |
| 94 | mke2fs_args.push_back("extent"); |
| 95 | } |
| 96 | |
Daniel Rosenberg | 29bc5d4 | 2020-01-31 18:27:41 -0800 | [diff] [blame] | 97 | mke2fs_args.push_back(fs_blkdev.c_str()); |
| 98 | mke2fs_args.push_back(size_str.c_str()); |
| 99 | |
Wei Wang | 02e89ec | 2020-02-14 14:22:16 -0800 | [diff] [blame] | 100 | rc = logwrap_fork_execvp(mke2fs_args.size(), mke2fs_args.data(), nullptr, false, LOG_KLOG, |
| 101 | false, nullptr); |
Jin Qian | f71bc0c | 2017-04-21 16:56:34 -0700 | [diff] [blame] | 102 | if (rc) { |
| 103 | LERROR << "mke2fs returned " << rc; |
| 104 | return rc; |
| 105 | } |
| 106 | |
| 107 | const char* const e2fsdroid_args[] = { |
Tom Cherry | c3e7bd3 | 2018-12-06 10:28:26 -0800 | [diff] [blame] | 108 | "/system/bin/e2fsdroid", "-e", "-a", fs_mnt_point.c_str(), fs_blkdev.c_str(), nullptr}; |
Jin Qian | f71bc0c | 2017-04-21 16:56:34 -0700 | [diff] [blame] | 109 | |
Tom Cherry | 3a803eb | 2019-09-25 16:23:50 -0700 | [diff] [blame] | 110 | rc = logwrap_fork_execvp(arraysize(e2fsdroid_args), e2fsdroid_args, nullptr, false, LOG_KLOG, |
Wei Wang | 02e89ec | 2020-02-14 14:22:16 -0800 | [diff] [blame] | 111 | false, nullptr); |
Jin Qian | f71bc0c | 2017-04-21 16:56:34 -0700 | [diff] [blame] | 112 | if (rc) { |
| 113 | LERROR << "e2fsdroid returned " << rc; |
William Roberts | 875476d | 2016-05-13 11:19:42 -0700 | [diff] [blame] | 114 | } |
| 115 | |
Chris Fries | 79f3384 | 2013-09-05 13:19:21 -0500 | [diff] [blame] | 116 | return rc; |
| 117 | } |
| 118 | |
Eric Biggers | 4d0c5ef | 2021-11-08 16:38:54 -0800 | [diff] [blame] | 119 | static int format_f2fs(const std::string& fs_blkdev, uint64_t dev_sz, bool needs_projid, |
| 120 | bool needs_casefold, bool fs_compress) { |
Jaegeuk Kim | a367430 | 2017-06-12 16:57:56 -0700 | [diff] [blame] | 121 | if (!dev_sz) { |
| 122 | int rc = get_dev_sz(fs_blkdev, &dev_sz); |
| 123 | if (rc) { |
| 124 | return rc; |
| 125 | } |
| 126 | } |
| 127 | |
| 128 | /* Format the partition using the calculated length */ |
Jaegeuk Kim | a367430 | 2017-06-12 16:57:56 -0700 | [diff] [blame] | 129 | |
| 130 | std::string size_str = std::to_string(dev_sz / 4096); |
Chris Fries | 79f3384 | 2013-09-05 13:19:21 -0500 | [diff] [blame] | 131 | |
Daniel Rosenberg | 29bc5d4 | 2020-01-31 18:27:41 -0800 | [diff] [blame] | 132 | std::vector<const char*> args = {"/system/bin/make_f2fs", "-g", "android"}; |
| 133 | if (needs_projid) { |
| 134 | args.push_back("-O"); |
| 135 | args.push_back("project_quota,extra_attr"); |
| 136 | } |
| 137 | if (needs_casefold) { |
| 138 | args.push_back("-O"); |
| 139 | args.push_back("casefold"); |
| 140 | args.push_back("-C"); |
| 141 | args.push_back("utf8"); |
| 142 | } |
Jaegeuk Kim | 4076dc9 | 2020-01-13 11:02:28 -0800 | [diff] [blame] | 143 | if (fs_compress) { |
| 144 | args.push_back("-O"); |
| 145 | args.push_back("compression"); |
| 146 | args.push_back("-O"); |
| 147 | args.push_back("extra_attr"); |
| 148 | } |
Daniel Rosenberg | 29bc5d4 | 2020-01-31 18:27:41 -0800 | [diff] [blame] | 149 | args.push_back(fs_blkdev.c_str()); |
| 150 | args.push_back(size_str.c_str()); |
| 151 | |
Wei Wang | 02e89ec | 2020-02-14 14:22:16 -0800 | [diff] [blame] | 152 | return logwrap_fork_execvp(args.size(), args.data(), nullptr, false, LOG_KLOG, false, nullptr); |
Chris Fries | 79f3384 | 2013-09-05 13:19:21 -0500 | [diff] [blame] | 153 | } |
| 154 | |
Eric Biggers | 4d0c5ef | 2021-11-08 16:38:54 -0800 | [diff] [blame] | 155 | int fs_mgr_do_format(const FstabEntry& entry) { |
Tom Cherry | 23319eb | 2018-11-30 16:16:05 -0800 | [diff] [blame] | 156 | LERROR << __FUNCTION__ << ": Format " << entry.blk_device << " as '" << entry.fs_type << "'"; |
Chris Fries | 79f3384 | 2013-09-05 13:19:21 -0500 | [diff] [blame] | 157 | |
Daniel Rosenberg | 29bc5d4 | 2020-01-31 18:27:41 -0800 | [diff] [blame] | 158 | bool needs_casefold = false; |
Shikha Malhotra | bc9b847 | 2021-12-29 16:26:18 +0000 | [diff] [blame] | 159 | bool needs_projid = true; |
Daniel Rosenberg | 29bc5d4 | 2020-01-31 18:27:41 -0800 | [diff] [blame] | 160 | |
| 161 | if (entry.mount_point == "/data") { |
Martijn Coenen | ea751d9 | 2020-04-15 11:45:05 +0200 | [diff] [blame] | 162 | needs_casefold = android::base::GetBoolProperty("external_storage.casefold.enabled", false); |
Daniel Rosenberg | 29bc5d4 | 2020-01-31 18:27:41 -0800 | [diff] [blame] | 163 | } |
| 164 | |
Tom Cherry | 23319eb | 2018-11-30 16:16:05 -0800 | [diff] [blame] | 165 | if (entry.fs_type == "f2fs") { |
Eric Biggers | 4d0c5ef | 2021-11-08 16:38:54 -0800 | [diff] [blame] | 166 | return format_f2fs(entry.blk_device, entry.length, needs_projid, needs_casefold, |
| 167 | entry.fs_mgr_flags.fs_compress); |
Tom Cherry | 23319eb | 2018-11-30 16:16:05 -0800 | [diff] [blame] | 168 | } else if (entry.fs_type == "ext4") { |
Eric Biggers | 4d0c5ef | 2021-11-08 16:38:54 -0800 | [diff] [blame] | 169 | return format_ext4(entry.blk_device, entry.mount_point, needs_projid, |
Jaegeuk Kim | 78f040c | 2020-02-11 15:22:46 -0800 | [diff] [blame] | 170 | entry.fs_mgr_flags.ext_meta_csum); |
Chris Fries | 79f3384 | 2013-09-05 13:19:21 -0500 | [diff] [blame] | 171 | } else { |
Tom Cherry | 23319eb | 2018-11-30 16:16:05 -0800 | [diff] [blame] | 172 | LERROR << "File system type '" << entry.fs_type << "' is not supported"; |
| 173 | return -EINVAL; |
Chris Fries | 79f3384 | 2013-09-05 13:19:21 -0500 | [diff] [blame] | 174 | } |
Tom Cherry | 23319eb | 2018-11-30 16:16:05 -0800 | [diff] [blame] | 175 | } |