1dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project/* 2dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * Copyright (C) 2008 The Android Open Source Project 3dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * 4dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * Licensed under the Apache License, Version 2.0 (the "License"); 5dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * you may not use this file except in compliance with the License. 6dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * You may obtain a copy of the License at 7dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * 8dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * http://www.apache.org/licenses/LICENSE-2.0 9dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * 10dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * Unless required by applicable law or agreed to in writing, software 11dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * distributed under the License is distributed on an "AS IS" BASIS, 12dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * See the License for the specific language governing permissions and 14dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * limitations under the License. 15dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 16dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 17dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <stdlib.h> 18dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <string.h> 19dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <dirent.h> 20dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <errno.h> 21dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <fcntl.h> 22dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 23dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <sys/types.h> 24dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <sys/stat.h> 25dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <sys/types.h> 26dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <sys/mman.h> 27dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <sys/mount.h> 28dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 29dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <linux/kdev_t.h> 30dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 31dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <cutils/properties.h> 32dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 33dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <diskconfig/diskconfig.h> 34dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 35dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#define LOG_TAG "Vold" 36dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 37dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <cutils/log.h> 38dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 39dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include "Volume.h" 40dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include "VolumeManager.h" 41dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include "ResponseCode.h" 42dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include "Fat.h" 43dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include "Process.h" 44dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 45dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectextern "C" void dos_partition_dec(void const *pp, struct dos_partition *d); 46dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectextern "C" void dos_partition_enc(void *pp, struct dos_partition *d); 47dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 48dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 49dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project/* 50dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * Secure directory - stuff that only root can see 51dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 52dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectconst char *Volume::SECDIR = "/mnt/secure"; 53dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 54dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project/* 55dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * Secure staging directory - where media is mounted for preparation 56dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 57dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectconst char *Volume::SEC_STGDIR = "/mnt/secure/staging"; 58dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 59dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project/* 60dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * Path to the directory on the media which contains publicly accessable 61dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * asec imagefiles. This path will be obscured before the mount is 62dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * exposed to non priviledged users. 63dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 64dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectconst char *Volume::SEC_STG_SECIMGDIR = "/mnt/secure/staging/.android_secure"; 65dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 66dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project/* 67dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * Path to where *only* root can access asec imagefiles 68dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 69dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectconst char *Volume::SEC_ASECDIR = "/mnt/secure/asec"; 70dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 71dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project/* 72dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * Path to where secure containers are mounted 73dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 74dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectconst char *Volume::ASECDIR = "/mnt/asec"; 75dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 76dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectstatic const char *stateToStr(int state) { 77dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (state == Volume::State_Init) 78dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return "Initializing"; 79dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project else if (state == Volume::State_NoMedia) 80dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return "No-Media"; 81dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project else if (state == Volume::State_Idle) 82dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return "Idle-Unmounted"; 83dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project else if (state == Volume::State_Pending) 84dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return "Pending"; 85dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project else if (state == Volume::State_Mounted) 86dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return "Mounted"; 87dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project else if (state == Volume::State_Unmounting) 88dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return "Unmounting"; 89dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project else if (state == Volume::State_Checking) 90dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return "Checking"; 91dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project else if (state == Volume::State_Formatting) 92dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return "Formatting"; 93dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project else if (state == Volume::State_Shared) 94dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return "Shared-Unmounted"; 95dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project else if (state == Volume::State_SharedMnt) 96dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return "Shared-Mounted"; 97dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project else 98dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return "Unknown-Error"; 99dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 100dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 101dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source ProjectVolume::Volume(VolumeManager *vm, const char *label, const char *mount_point) { 102dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project mVm = vm; 103dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project mDebug = false; 104dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project mLabel = strdup(label); 105dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project mMountpoint = strdup(mount_point); 106dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project mState = Volume::State_Init; 107dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project mCurrentlyMountedKdev = -1; 108dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 109dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 110dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source ProjectVolume::~Volume() { 111dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project free(mLabel); 112dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project free(mMountpoint); 113dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 114dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 115dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectvoid Volume::protectFromAutorunStupidity() { 116dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project char filename[255]; 117dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 118dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project snprintf(filename, sizeof(filename), "%s/autorun.inf", SEC_STGDIR); 119dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (!access(filename, F_OK)) { 120dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project SLOGW("Volume contains an autorun.inf! - removing"); 121dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* 122dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * Ensure the filename is all lower-case so 123dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * the process killer can find the inode. 124dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * Probably being paranoid here but meh. 125dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 126dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project rename(filename, filename); 127dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project Process::killProcessesWithOpenFiles(filename, 2); 128dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (unlink(filename)) { 129dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project SLOGE("Failed to remove %s (%s)", filename, strerror(errno)); 130dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 131dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 132dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 133dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 134dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectvoid Volume::setDebug(bool enable) { 135dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project mDebug = enable; 136dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 137dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 138dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectdev_t Volume::getDiskDevice() { 139dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return MKDEV(0, 0); 140dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project}; 141dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 142dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectvoid Volume::handleVolumeShared() { 143dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 144dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 145dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectvoid Volume::handleVolumeUnshared() { 146dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 147dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 148dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectint Volume::handleBlockEvent(NetlinkEvent *evt) { 149dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project errno = ENOSYS; 150dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return -1; 151dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 152dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 153dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectvoid Volume::setState(int state) { 154dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project char msg[255]; 155dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int oldState = mState; 156dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 157dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (oldState == state) { 158dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project SLOGW("Duplicate state (%d)\n", state); 159dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return; 160dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 161dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 162dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project mState = state; 163dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 164dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project SLOGD("Volume %s state changing %d (%s) -> %d (%s)", mLabel, 165dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project oldState, stateToStr(oldState), mState, stateToStr(mState)); 166dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project snprintf(msg, sizeof(msg), 167dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project "Volume %s %s state changed from %d (%s) to %d (%s)", getLabel(), 168dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project getMountpoint(), oldState, stateToStr(oldState), mState, 169dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project stateToStr(mState)); 170dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 171dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project mVm->getBroadcaster()->sendBroadcast(ResponseCode::VolumeStateChange, 172dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project msg, false); 173dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 174dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 175dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectint Volume::createDeviceNode(const char *path, int major, int minor) { 176dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project mode_t mode = 0660 | S_IFBLK; 177dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project dev_t dev = (major << 8) | minor; 178dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (mknod(path, mode, dev) < 0) { 179dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (errno != EEXIST) { 180dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return -1; 181dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 182dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 183dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return 0; 184dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 185dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 186dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectint Volume::formatVol() { 187dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 188dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (getState() == Volume::State_NoMedia) { 189dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project errno = ENODEV; 190dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return -1; 191dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } else if (getState() != Volume::State_Idle) { 192dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project errno = EBUSY; 193dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return -1; 194dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 195dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 196dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (isMountpointMounted(getMountpoint())) { 197dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project SLOGW("Volume is idle but appears to be mounted - fixing"); 198dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project setState(Volume::State_Mounted); 199dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project // mCurrentlyMountedKdev = XXX 200dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project errno = EBUSY; 201dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return -1; 202dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 203dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 204dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project char devicePath[255]; 205dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project dev_t diskNode = getDiskDevice(); 206dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project dev_t partNode = MKDEV(MAJOR(diskNode), 1); // XXX: Hmmm 207dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 208dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project sprintf(devicePath, "/dev/block/vold/%d:%d", 209dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project MAJOR(diskNode), MINOR(diskNode)); 210dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 211dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (mDebug) { 212dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project SLOGI("Formatting volume %s (%s)", getLabel(), devicePath); 213dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 214dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project setState(Volume::State_Formatting); 215dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 216dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (initializeMbr(devicePath)) { 217dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project SLOGE("Failed to initialize MBR (%s)", strerror(errno)); 218dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project goto err; 219dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 220dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 221dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project sprintf(devicePath, "/dev/block/vold/%d:%d", 222dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project MAJOR(partNode), MINOR(partNode)); 223dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 224dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (Fat::format(devicePath, 0)) { 225dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project SLOGE("Failed to format (%s)", strerror(errno)); 226dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project goto err; 227dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 228dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 229dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project setState(Volume::State_Idle); 230dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return 0; 231dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projecterr: 232dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return -1; 233dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 234dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 235dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectbool Volume::isMountpointMounted(const char *path) { 236dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project char device[256]; 237dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project char mount_path[256]; 238dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project char rest[256]; 239dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project FILE *fp; 240dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project char line[1024]; 241dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 242dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (!(fp = fopen("/proc/mounts", "r"))) { 243dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project SLOGE("Error opening /proc/mounts (%s)", strerror(errno)); 244dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return false; 245dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 246dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 247dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project while(fgets(line, sizeof(line), fp)) { 248dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project line[strlen(line)-1] = '\0'; 249dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project sscanf(line, "%255s %255s %255s\n", device, mount_path, rest); 250dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (!strcmp(mount_path, path)) { 251dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project fclose(fp); 252dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return true; 253dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 254dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 255dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 256dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 257dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project fclose(fp); 258dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return false; 259dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 260dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 261dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectint Volume::mountVol() { 262dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project dev_t deviceNodes[4]; 263dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int n, i, rc = 0; 264dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project char errmsg[255]; 265dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 266dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (getState() == Volume::State_NoMedia) { 267dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project snprintf(errmsg, sizeof(errmsg), 268dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project "Volume %s %s mount failed - no media", 269dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project getLabel(), getMountpoint()); 270dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project mVm->getBroadcaster()->sendBroadcast( 271dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ResponseCode::VolumeMountFailedNoMedia, 272dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project errmsg, false); 273dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project errno = ENODEV; 274dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return -1; 275dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } else if (getState() != Volume::State_Idle) { 276dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project errno = EBUSY; 277dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return -1; 278dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 279dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 280dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (isMountpointMounted(getMountpoint())) { 281dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project SLOGW("Volume is idle but appears to be mounted - fixing"); 282dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project setState(Volume::State_Mounted); 283dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project // mCurrentlyMountedKdev = XXX 284dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return 0; 285dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 286dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 287dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project n = getDeviceNodes((dev_t *) &deviceNodes, 4); 288dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (!n) { 289dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project SLOGE("Failed to get device nodes (%s)\n", strerror(errno)); 290dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return -1; 291dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 292dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 293dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project for (i = 0; i < n; i++) { 294dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project char devicePath[255]; 295dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 296dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project sprintf(devicePath, "/dev/block/vold/%d:%d", MAJOR(deviceNodes[i]), 297dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project MINOR(deviceNodes[i])); 298dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 299dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project SLOGI("%s being considered for volume %s\n", devicePath, getLabel()); 300dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 301dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project errno = 0; 302dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project setState(Volume::State_Checking); 303dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 304dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (Fat::check(devicePath)) { 305dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (errno == ENODATA) { 306dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project SLOGW("%s does not contain a FAT filesystem\n", devicePath); 307dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project continue; 308dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 309dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project errno = EIO; 310dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* Badness - abort the mount */ 311dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project SLOGE("%s failed FS checks (%s)", devicePath, strerror(errno)); 312dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project setState(Volume::State_Idle); 313dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return -1; 314dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 315dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 316dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* 317dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * Mount the device on our internal staging mountpoint so we can 318dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * muck with it before exposing it to non priviledged users. 319dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 320dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project errno = 0; 321dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (Fat::doMount(devicePath, "/mnt/secure/staging", false, false, 1000, 1015, 0702, true)) { 322dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project SLOGE("%s failed to mount via VFAT (%s)\n", devicePath, strerror(errno)); 323dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project continue; 324dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 325dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 326dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project SLOGI("Device %s, target %s mounted @ /mnt/secure/staging", devicePath, getMountpoint()); 327dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 328dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project protectFromAutorunStupidity(); 329dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 330dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (createBindMounts()) { 331dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project SLOGE("Failed to create bindmounts (%s)", strerror(errno)); 332dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project umount("/mnt/secure/staging"); 333dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project setState(Volume::State_Idle); 334dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return -1; 335dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 336dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 337dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* 338dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * Now that the bindmount trickery is done, atomically move the 339dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * whole subtree to expose it to non priviledged users. 340dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 341dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (doMoveMount("/mnt/secure/staging", getMountpoint(), false)) { 342dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project SLOGE("Failed to move mount (%s)", strerror(errno)); 343dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project umount("/mnt/secure/staging"); 344dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project setState(Volume::State_Idle); 345dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return -1; 346dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 347dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project setState(Volume::State_Mounted); 348dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project mCurrentlyMountedKdev = deviceNodes[i]; 349dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return 0; 350dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 351dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 352dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project SLOGE("Volume %s found no suitable devices for mounting :(\n", getLabel()); 353dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project setState(Volume::State_Idle); 354dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 355dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return -1; 356dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 357dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 358dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectint Volume::createBindMounts() { 359dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project unsigned long flags; 360dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 361dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* 362dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * Rename old /android_secure -> /.android_secure 363dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 364dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (!access("/mnt/secure/staging/android_secure", R_OK | X_OK) && 365dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project access(SEC_STG_SECIMGDIR, R_OK | X_OK)) { 366dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (rename("/mnt/secure/staging/android_secure", SEC_STG_SECIMGDIR)) { 367dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project SLOGE("Failed to rename legacy asec dir (%s)", strerror(errno)); 368dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 369dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 370dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 371dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* 372dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * Ensure that /android_secure exists and is a directory 373dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 374dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (access(SEC_STG_SECIMGDIR, R_OK | X_OK)) { 375dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (errno == ENOENT) { 376dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (mkdir(SEC_STG_SECIMGDIR, 0777)) { 377dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project SLOGE("Failed to create %s (%s)", SEC_STG_SECIMGDIR, strerror(errno)); 378dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return -1; 379dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 380dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } else { 381dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project SLOGE("Failed to access %s (%s)", SEC_STG_SECIMGDIR, strerror(errno)); 382dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return -1; 383dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 384dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } else { 385dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project struct stat sbuf; 386dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 387dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (stat(SEC_STG_SECIMGDIR, &sbuf)) { 388dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project SLOGE("Failed to stat %s (%s)", SEC_STG_SECIMGDIR, strerror(errno)); 389dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return -1; 390dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 391dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (!S_ISDIR(sbuf.st_mode)) { 392dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project SLOGE("%s is not a directory", SEC_STG_SECIMGDIR); 393dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project errno = ENOTDIR; 394dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return -1; 395dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 396dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 397dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 398dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* 399dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * Bind mount /mnt/secure/staging/android_secure -> /mnt/secure/asec so we'll 400dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * have a root only accessable mountpoint for it. 401dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 402dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (mount(SEC_STG_SECIMGDIR, SEC_ASECDIR, "", MS_BIND, NULL)) { 403dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project SLOGE("Failed to bind mount points %s -> %s (%s)", 404dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project SEC_STG_SECIMGDIR, SEC_ASECDIR, strerror(errno)); 405dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return -1; 406dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 407dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 408dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* 409dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * Mount a read-only, zero-sized tmpfs on <mountpoint>/android_secure to 410dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * obscure the underlying directory from everybody - sneaky eh? ;) 411dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 412dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (mount("tmpfs", SEC_STG_SECIMGDIR, "tmpfs", MS_RDONLY, "size=0,mode=000,uid=0,gid=0")) { 413 SLOGE("Failed to obscure %s (%s)", SEC_STG_SECIMGDIR, strerror(errno)); 414 umount("/mnt/asec_secure"); 415 return -1; 416 } 417 418 return 0; 419} 420 421int Volume::doMoveMount(const char *src, const char *dst, bool force) { 422 unsigned int flags = MS_MOVE; 423 int retries = 5; 424 425 while(retries--) { 426 if (!mount(src, dst, "", flags, NULL)) { 427 if (mDebug) { 428 SLOGD("Moved mount %s -> %s sucessfully", src, dst); 429 } 430 return 0; 431 } else if (errno != EBUSY) { 432 SLOGE("Failed to move mount %s -> %s (%s)", src, dst, strerror(errno)); 433 return -1; 434 } 435 int action = 0; 436 437 if (force) { 438 if (retries == 1) { 439 action = 2; // SIGKILL 440 } else if (retries == 2) { 441 action = 1; // SIGHUP 442 } 443 } 444 SLOGW("Failed to move %s -> %s (%s, retries %d, action %d)", 445 src, dst, strerror(errno), retries, action); 446 Process::killProcessesWithOpenFiles(src, action); 447 usleep(1000*250); 448 } 449 450 errno = EBUSY; 451 SLOGE("Giving up on move %s -> %s (%s)", src, dst, strerror(errno)); 452 return -1; 453} 454 455int Volume::doUnmount(const char *path, bool force) { 456 int retries = 10; 457 458 if (mDebug) { 459 SLOGD("Unmounting {%s}, force = %d", path, force); 460 } 461 462 while (retries--) { 463 if (!umount(path) || errno == EINVAL || errno == ENOENT) { 464 SLOGI("%s sucessfully unmounted", path); 465 return 0; 466 } 467 468 int action = 0; 469 470 if (force) { 471 if (retries == 1) { 472 action = 2; // SIGKILL 473 } else if (retries == 2) { 474 action = 1; // SIGHUP 475 } 476 } 477 478 SLOGW("Failed to unmount %s (%s, retries %d, action %d)", 479 path, strerror(errno), retries, action); 480 481 Process::killProcessesWithOpenFiles(path, action); 482 usleep(1000*1000); 483 } 484 errno = EBUSY; 485 SLOGE("Giving up on unmount %s (%s)", path, strerror(errno)); 486 return -1; 487} 488 489int Volume::unmountVol(bool force) { 490 int i, rc; 491 492 if (getState() != Volume::State_Mounted) { 493 SLOGE("Volume %s unmount request when not mounted", getLabel()); 494 errno = EINVAL; 495 return -1; 496 } 497 498 setState(Volume::State_Unmounting); 499 usleep(1000 * 1000); // Give the framework some time to react 500 501 /* 502 * First move the mountpoint back to our internal staging point 503 * so nobody else can muck with it while we work. 504 */ 505 if (doMoveMount(getMountpoint(), SEC_STGDIR, force)) { 506 SLOGE("Failed to move mount %s => %s (%s)", getMountpoint(), SEC_STGDIR, strerror(errno)); 507 setState(Volume::State_Mounted); 508 return -1; 509 } 510 511 protectFromAutorunStupidity(); 512 513 /* 514 * Unmount the tmpfs which was obscuring the asec image directory 515 * from non root users 516 */ 517 518 if (doUnmount(Volume::SEC_STG_SECIMGDIR, force)) { 519 SLOGE("Failed to unmount tmpfs on %s (%s)", SEC_STG_SECIMGDIR, strerror(errno)); 520 goto fail_republish; 521 } 522 523 /* 524 * Remove the bindmount we were using to keep a reference to 525 * the previously obscured directory. 526 */ 527 528 if (doUnmount(Volume::SEC_ASECDIR, force)) { 529 SLOGE("Failed to remove bindmount on %s (%s)", SEC_ASECDIR, strerror(errno)); 530 goto fail_remount_tmpfs; 531 } 532 533 /* 534 * Finally, unmount the actual block device from the staging dir 535 */ 536 if (doUnmount(Volume::SEC_STGDIR, force)) { 537 SLOGE("Failed to unmount %s (%s)", SEC_STGDIR, strerror(errno)); 538 goto fail_recreate_bindmount; 539 } 540 541 SLOGI("%s unmounted sucessfully", getMountpoint()); 542 543 setState(Volume::State_Idle); 544 mCurrentlyMountedKdev = -1; 545 return 0; 546 547 /* 548 * Failure handling - try to restore everything back the way it was 549 */ 550fail_recreate_bindmount: 551 if (mount(SEC_STG_SECIMGDIR, SEC_ASECDIR, "", MS_BIND, NULL)) { 552 SLOGE("Failed to restore bindmount after failure! - Storage will appear offline!"); 553 goto out_nomedia; 554 } 555fail_remount_tmpfs: 556 if (mount("tmpfs", SEC_STG_SECIMGDIR, "tmpfs", MS_RDONLY, "size=0,mode=0,uid=0,gid=0")) { 557 SLOGE("Failed to restore tmpfs after failure! - Storage will appear offline!"); 558 goto out_nomedia; 559 } 560fail_republish: 561 if (doMoveMount(SEC_STGDIR, getMountpoint(), force)) { 562 SLOGE("Failed to republish mount after failure! - Storage will appear offline!"); 563 goto out_nomedia; 564 } 565 566 setState(Volume::State_Mounted); 567 return -1; 568 569out_nomedia: 570 setState(Volume::State_NoMedia); 571 return -1; 572} 573 574int Volume::initializeMbr(const char *deviceNode) { 575 struct disk_info dinfo; 576 577 memset(&dinfo, 0, sizeof(dinfo)); 578 579 if (!(dinfo.part_lst = (struct part_info *) malloc(MAX_NUM_PARTS * sizeof(struct part_info)))) { 580 SLOGE("Failed to malloc prt_lst"); 581 return -1; 582 } 583 584 memset(dinfo.part_lst, 0, MAX_NUM_PARTS * sizeof(struct part_info)); 585 dinfo.device = strdup(deviceNode); 586 dinfo.scheme = PART_SCHEME_MBR; 587 dinfo.sect_size = 512; 588 dinfo.skip_lba = 2048; 589 dinfo.num_lba = 0; 590 dinfo.num_parts = 1; 591 592 struct part_info *pinfo = &dinfo.part_lst[0]; 593 594 pinfo->name = strdup("android_sdcard"); 595 pinfo->flags |= PART_ACTIVE_FLAG; 596 pinfo->type = PC_PART_TYPE_FAT32; 597 pinfo->len_kb = -1; 598 599 int rc = apply_disk_config(&dinfo, 0); 600 601 if (rc) { 602 SLOGE("Failed to apply disk configuration (%d)", rc); 603 goto out; 604 } 605 606 out: 607 free(pinfo->name); 608 free(dinfo.device); 609 free(dinfo.part_lst); 610 611 return rc; 612} 613