Kenny Root | 344ca10 | 2012-04-03 17:23:01 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2012 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 <stdlib.h> |
| 19 | #include <fcntl.h> |
| 20 | #include <unistd.h> |
| 21 | #include <errno.h> |
| 22 | #include <string.h> |
| 23 | #include <dirent.h> |
| 24 | #include <errno.h> |
| 25 | #include <fcntl.h> |
| 26 | |
| 27 | #include <sys/types.h> |
| 28 | #include <sys/stat.h> |
| 29 | #include <sys/types.h> |
| 30 | #include <sys/mman.h> |
| 31 | #include <sys/mount.h> |
Rom Lemarchand | 2ba45aa | 2013-01-16 12:29:28 -0800 | [diff] [blame] | 32 | #include <sys/wait.h> |
Kenny Root | 344ca10 | 2012-04-03 17:23:01 -0700 | [diff] [blame] | 33 | |
| 34 | #include <linux/kdev_t.h> |
Kenny Root | 344ca10 | 2012-04-03 17:23:01 -0700 | [diff] [blame] | 35 | |
| 36 | #define LOG_TAG "Vold" |
| 37 | |
| 38 | #include <cutils/log.h> |
| 39 | #include <cutils/properties.h> |
| 40 | |
Rom Lemarchand | 2ba45aa | 2013-01-16 12:29:28 -0800 | [diff] [blame] | 41 | #include <logwrap/logwrap.h> |
| 42 | |
Kenny Root | 344ca10 | 2012-04-03 17:23:01 -0700 | [diff] [blame] | 43 | #include "Ext4.h" |
Rom Lemarchand | 5593c85 | 2012-12-21 12:41:43 -0800 | [diff] [blame] | 44 | #include "VoldUtil.h" |
Kenny Root | 344ca10 | 2012-04-03 17:23:01 -0700 | [diff] [blame] | 45 | |
| 46 | #define MKEXT4FS_PATH "/system/bin/make_ext4fs"; |
| 47 | |
Kenny Root | 344ca10 | 2012-04-03 17:23:01 -0700 | [diff] [blame] | 48 | int Ext4::doMount(const char *fsPath, const char *mountPoint, bool ro, bool remount, |
| 49 | bool executable) { |
| 50 | int rc; |
| 51 | unsigned long flags; |
| 52 | |
| 53 | flags = MS_NOATIME | MS_NODEV | MS_NOSUID | MS_DIRSYNC; |
| 54 | |
| 55 | flags |= (executable ? 0 : MS_NOEXEC); |
| 56 | flags |= (ro ? MS_RDONLY : 0); |
| 57 | flags |= (remount ? MS_REMOUNT : 0); |
| 58 | |
| 59 | rc = mount(fsPath, mountPoint, "ext4", flags, NULL); |
| 60 | |
| 61 | if (rc && errno == EROFS) { |
| 62 | SLOGE("%s appears to be a read only filesystem - retrying mount RO", fsPath); |
| 63 | flags |= MS_RDONLY; |
| 64 | rc = mount(fsPath, mountPoint, "ext4", flags, NULL); |
| 65 | } |
| 66 | |
| 67 | return rc; |
| 68 | } |
| 69 | |
Daniel Rosenberg | 6a74dca | 2014-05-23 13:47:00 -0700 | [diff] [blame] | 70 | int Ext4::format(const char *fsPath, unsigned int numSectors, const char *mountpoint) { |
Kenny Root | 344ca10 | 2012-04-03 17:23:01 -0700 | [diff] [blame] | 71 | int fd; |
Daniel Rosenberg | 6a74dca | 2014-05-23 13:47:00 -0700 | [diff] [blame] | 72 | const char *args[7]; |
Kenny Root | 344ca10 | 2012-04-03 17:23:01 -0700 | [diff] [blame] | 73 | int rc; |
Rom Lemarchand | 2ba45aa | 2013-01-16 12:29:28 -0800 | [diff] [blame] | 74 | int status; |
Kenny Root | 344ca10 | 2012-04-03 17:23:01 -0700 | [diff] [blame] | 75 | |
| 76 | args[0] = MKEXT4FS_PATH; |
| 77 | args[1] = "-J"; |
rpcraig | a54e13a | 2012-09-21 14:17:08 -0400 | [diff] [blame] | 78 | args[2] = "-a"; |
| 79 | args[3] = mountpoint; |
Daniel Rosenberg | 6a74dca | 2014-05-23 13:47:00 -0700 | [diff] [blame] | 80 | if (numSectors) { |
| 81 | char tmp[32]; |
| 82 | snprintf(tmp, sizeof(tmp), "%u", numSectors * 512); |
| 83 | const char *size = tmp; |
| 84 | args[4] = "-l"; |
| 85 | args[5] = size; |
| 86 | args[6] = fsPath; |
| 87 | rc = android_fork_execvp(ARRAY_SIZE(args), (char **)args, &status, false, true); |
| 88 | } else { |
| 89 | args[4] = fsPath; |
| 90 | rc = android_fork_execvp(5, (char **)args, &status, false, true); |
| 91 | } |
Rom Lemarchand | 2ba45aa | 2013-01-16 12:29:28 -0800 | [diff] [blame] | 92 | rc = android_fork_execvp(ARRAY_SIZE(args), (char **)args, &status, false, |
| 93 | true); |
| 94 | if (rc != 0) { |
| 95 | SLOGE("Filesystem (ext4) format failed due to logwrap error"); |
| 96 | errno = EIO; |
| 97 | return -1; |
| 98 | } |
Kenny Root | 344ca10 | 2012-04-03 17:23:01 -0700 | [diff] [blame] | 99 | |
Rom Lemarchand | 2ba45aa | 2013-01-16 12:29:28 -0800 | [diff] [blame] | 100 | if (!WIFEXITED(status)) { |
| 101 | SLOGE("Filesystem (ext4) format did not exit properly"); |
| 102 | errno = EIO; |
| 103 | return -1; |
| 104 | } |
| 105 | |
| 106 | status = WEXITSTATUS(status); |
| 107 | |
| 108 | if (status == 0) { |
Kenny Root | 344ca10 | 2012-04-03 17:23:01 -0700 | [diff] [blame] | 109 | SLOGI("Filesystem (ext4) formatted OK"); |
| 110 | return 0; |
| 111 | } else { |
Rom Lemarchand | 2ba45aa | 2013-01-16 12:29:28 -0800 | [diff] [blame] | 112 | SLOGE("Format (ext4) failed (unknown exit code %d)", status); |
Kenny Root | 344ca10 | 2012-04-03 17:23:01 -0700 | [diff] [blame] | 113 | errno = EIO; |
| 114 | return -1; |
| 115 | } |
| 116 | return 0; |
| 117 | } |