Volume.cpp revision d9a4e358614a0c5f60cc76c0636ee4bb02004a32
1f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat/* 2f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat * Copyright (C) 2008 The Android Open Source Project 3f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat * 4f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat * Licensed under the Apache License, Version 2.0 (the "License"); 5f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat * you may not use this file except in compliance with the License. 6f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat * You may obtain a copy of the License at 7f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat * 8f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat * http://www.apache.org/licenses/LICENSE-2.0 9f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat * 10f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat * Unless required by applicable law or agreed to in writing, software 11f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat * distributed under the License is distributed on an "AS IS" BASIS, 12f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat * See the License for the specific language governing permissions and 14f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat * limitations under the License. 15f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat */ 16f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat 1749e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat#include <stdlib.h> 18f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat#include <string.h> 1949e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat#include <dirent.h> 2049e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat#include <errno.h> 2149e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat#include <fcntl.h> 2249e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat 2349e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat#include <sys/types.h> 2449e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat#include <sys/stat.h> 2549e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat#include <sys/types.h> 2649e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat#include <sys/mman.h> 27a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat#include <sys/mount.h> 28a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 29a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat#include <linux/kdev_t.h> 30a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 31a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat#include <cutils/properties.h> 32a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 332a5b8ce09b8836a8463ef9beaaff865c36ca5e6aSan Mehat#include <diskconfig/diskconfig.h> 34f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat 35f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat#define LOG_TAG "Vold" 36f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat 37f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat#include <cutils/log.h> 38f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat 39f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat#include "Volume.h" 40a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat#include "VolumeManager.h" 41a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat#include "ResponseCode.h" 42bf04185c88161f13118b9975cdff7967d49a4fa0San Mehat#include "Fat.h" 43586536c60b773e3517531ad8a6cb0de6722c67fcSan Mehat#include "Process.h" 44f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat 45a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehatextern "C" void dos_partition_dec(void const *pp, struct dos_partition *d); 46a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehatextern "C" void dos_partition_enc(void *pp, struct dos_partition *d); 4749e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat 483bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat 493bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat/* 503bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat * Secure directory - stuff that only root can see 513bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat */ 523bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehatconst char *Volume::SECDIR = "/mnt/secure"; 533bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat 543bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat/* 553bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat * Secure staging directory - where media is mounted for preparation 563bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat */ 573bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehatconst char *Volume::SEC_STGDIR = "/mnt/secure/staging"; 583bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat 593bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat/* 603bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat * Path to the directory on the media which contains publicly accessable 613bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat * asec imagefiles. This path will be obscured before the mount is 623bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat * exposed to non priviledged users. 633bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat */ 6452c2ccb6d25b94b96685efd4803226727710fbaeSan Mehatconst char *Volume::SEC_STG_SECIMGDIR = "/mnt/secure/staging/.android_secure"; 653bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat 663bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat/* 673bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat * Path to where *only* root can access asec imagefiles 683bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat */ 693bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehatconst char *Volume::SEC_ASECDIR = "/mnt/secure/asec"; 703bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat 713bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat/* 723bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat * Path to where secure containers are mounted 733bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat */ 743bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehatconst char *Volume::ASECDIR = "/mnt/asec"; 753bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat 76a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehatstatic const char *stateToStr(int state) { 77a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat if (state == Volume::State_Init) 78a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return "Initializing"; 79a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat else if (state == Volume::State_NoMedia) 80a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return "No-Media"; 81a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat else if (state == Volume::State_Idle) 82a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return "Idle-Unmounted"; 83a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat else if (state == Volume::State_Pending) 84a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return "Pending"; 85a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat else if (state == Volume::State_Mounted) 86a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return "Mounted"; 87a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat else if (state == Volume::State_Unmounting) 88a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return "Unmounting"; 89a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat else if (state == Volume::State_Checking) 90a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return "Checking"; 91a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat else if (state == Volume::State_Formatting) 92a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return "Formatting"; 93a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat else if (state == Volume::State_Shared) 94a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return "Shared-Unmounted"; 95a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat else if (state == Volume::State_SharedMnt) 96a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return "Shared-Mounted"; 97a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat else 98a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return "Unknown-Error"; 99a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat} 10049e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat 101a2677e4ad01f250b0765f04adf0acfa6627efc98San MehatVolume::Volume(VolumeManager *vm, const char *label, const char *mount_point) { 102a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat mVm = vm; 103d9a4e358614a0c5f60cc76c0636ee4bb02004a32San Mehat mDebug = false; 104f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat mLabel = strdup(label); 105f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat mMountpoint = strdup(mount_point); 106f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat mState = Volume::State_Init; 107a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat mCurrentlyMountedKdev = -1; 108f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat} 109f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat 110f1b736bc5605e92e917ab27f5abf3ba839be2270San MehatVolume::~Volume() { 111f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat free(mLabel); 112f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat free(mMountpoint); 113f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat} 114f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat 115d9a4e358614a0c5f60cc76c0636ee4bb02004a32San Mehatvoid Volume::setDebug(bool enable) { 116d9a4e358614a0c5f60cc76c0636ee4bb02004a32San Mehat mDebug = enable; 117d9a4e358614a0c5f60cc76c0636ee4bb02004a32San Mehat} 118d9a4e358614a0c5f60cc76c0636ee4bb02004a32San Mehat 119a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehatdev_t Volume::getDiskDevice() { 120a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return MKDEV(0, 0); 121a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat}; 122a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 123a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehatvoid Volume::handleVolumeShared() { 124a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat} 125a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 126a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehatvoid Volume::handleVolumeUnshared() { 127a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat} 128a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 129fd7f5875129adfe2845f4f3fffb17db3a89eea25San Mehatint Volume::handleBlockEvent(NetlinkEvent *evt) { 130f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat errno = ENOSYS; 131f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat return -1; 132f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat} 133f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat 134f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehatvoid Volume::setState(int state) { 135a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat char msg[255]; 136a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat int oldState = mState; 137a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 138a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat if (oldState == state) { 139a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat LOGW("Duplicate state (%d)\n", state); 140a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return; 141a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 142a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 143f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat mState = state; 144a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 145a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat LOGD("Volume %s state changing %d (%s) -> %d (%s)", mLabel, 146a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat oldState, stateToStr(oldState), mState, stateToStr(mState)); 147a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat snprintf(msg, sizeof(msg), 148a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat "Volume %s %s state changed from %d (%s) to %d (%s)", getLabel(), 149a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat getMountpoint(), oldState, stateToStr(oldState), mState, 150a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat stateToStr(mState)); 151a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 152a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat mVm->getBroadcaster()->sendBroadcast(ResponseCode::VolumeStateChange, 153a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat msg, false); 154f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat} 15549e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat 156dd9b8e92aaf330b48ddb40a7380588ef92b53de6San Mehatint Volume::createDeviceNode(const char *path, int major, int minor) { 157dd9b8e92aaf330b48ddb40a7380588ef92b53de6San Mehat mode_t mode = 0660 | S_IFBLK; 158dd9b8e92aaf330b48ddb40a7380588ef92b53de6San Mehat dev_t dev = (major << 8) | minor; 159dd9b8e92aaf330b48ddb40a7380588ef92b53de6San Mehat if (mknod(path, mode, dev) < 0) { 160dd9b8e92aaf330b48ddb40a7380588ef92b53de6San Mehat if (errno != EEXIST) { 161dd9b8e92aaf330b48ddb40a7380588ef92b53de6San Mehat return -1; 162dd9b8e92aaf330b48ddb40a7380588ef92b53de6San Mehat } 163dd9b8e92aaf330b48ddb40a7380588ef92b53de6San Mehat } 164dd9b8e92aaf330b48ddb40a7380588ef92b53de6San Mehat return 0; 165dd9b8e92aaf330b48ddb40a7380588ef92b53de6San Mehat} 166dd9b8e92aaf330b48ddb40a7380588ef92b53de6San Mehat 167a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehatint Volume::formatVol() { 16849e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat 169a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat if (getState() == Volume::State_NoMedia) { 170a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat errno = ENODEV; 17149e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat return -1; 172a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } else if (getState() != Volume::State_Idle) { 173a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat errno = EBUSY; 174a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return -1; 175a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 176a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 177a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat if (isMountpointMounted(getMountpoint())) { 178a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat LOGW("Volume is idle but appears to be mounted - fixing"); 179a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat setState(Volume::State_Mounted); 180a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat // mCurrentlyMountedKdev = XXX 181a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat errno = EBUSY; 182a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return -1; 183a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 184a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 185a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat char devicePath[255]; 186a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat dev_t diskNode = getDiskDevice(); 187a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat dev_t partNode = MKDEV(MAJOR(diskNode), 1); // XXX: Hmmm 188a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 189a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat sprintf(devicePath, "/dev/block/vold/%d:%d", 190a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat MAJOR(diskNode), MINOR(diskNode)); 191a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 192d9a4e358614a0c5f60cc76c0636ee4bb02004a32San Mehat if (mDebug) { 193d9a4e358614a0c5f60cc76c0636ee4bb02004a32San Mehat LOGI("Formatting volume %s (%s)", getLabel(), devicePath); 194d9a4e358614a0c5f60cc76c0636ee4bb02004a32San Mehat } 1952a5b8ce09b8836a8463ef9beaaff865c36ca5e6aSan Mehat setState(Volume::State_Formatting); 196a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 197a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat if (initializeMbr(devicePath)) { 198a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat LOGE("Failed to initialize MBR (%s)", strerror(errno)); 199a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat goto err; 200a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 201a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 202a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat sprintf(devicePath, "/dev/block/vold/%d:%d", 203a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat MAJOR(partNode), MINOR(partNode)); 204a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 205fcf24fe62f98c5d44431aa575555569c2c7a29b0San Mehat if (Fat::format(devicePath, 0)) { 206a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat LOGE("Failed to format (%s)", strerror(errno)); 207a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat goto err; 208a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 209a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 2102a5b8ce09b8836a8463ef9beaaff865c36ca5e6aSan Mehat setState(Volume::State_Idle); 211a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return 0; 212a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehaterr: 213a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return -1; 214a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat} 215a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 216a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehatbool Volume::isMountpointMounted(const char *path) { 217a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat char device[256]; 218a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat char mount_path[256]; 219a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat char rest[256]; 220a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat FILE *fp; 221a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat char line[1024]; 222a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 223a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat if (!(fp = fopen("/proc/mounts", "r"))) { 224a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat LOGE("Error opening /proc/mounts (%s)", strerror(errno)); 225a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return false; 22649e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat } 22749e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat 228a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat while(fgets(line, sizeof(line), fp)) { 229a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat line[strlen(line)-1] = '\0'; 230a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat sscanf(line, "%255s %255s %255s\n", device, mount_path, rest); 231a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat if (!strcmp(mount_path, path)) { 232a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat fclose(fp); 233a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return true; 234a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 235dd9b8e92aaf330b48ddb40a7380588ef92b53de6San Mehat 236a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 237dd9b8e92aaf330b48ddb40a7380588ef92b53de6San Mehat 238a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat fclose(fp); 239a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return false; 240a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat} 241a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 242a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehatint Volume::mountVol() { 243a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat dev_t deviceNodes[4]; 244a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat int n, i, rc = 0; 245a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat char errmsg[255]; 246a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 247a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat if (getState() == Volume::State_NoMedia) { 248a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat snprintf(errmsg, sizeof(errmsg), 249a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat "Volume %s %s mount failed - no media", 250a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat getLabel(), getMountpoint()); 251a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat mVm->getBroadcaster()->sendBroadcast( 252a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat ResponseCode::VolumeMountFailedNoMedia, 253a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat errmsg, false); 254a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat errno = ENODEV; 255a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return -1; 256a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } else if (getState() != Volume::State_Idle) { 257a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat errno = EBUSY; 25849e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat return -1; 25949e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat } 26049e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat 261a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat if (isMountpointMounted(getMountpoint())) { 262a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat LOGW("Volume is idle but appears to be mounted - fixing"); 263a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat setState(Volume::State_Mounted); 264a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat // mCurrentlyMountedKdev = XXX 265a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return 0; 266a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 267a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 268a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat n = getDeviceNodes((dev_t *) &deviceNodes, 4); 269a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat if (!n) { 270a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat LOGE("Failed to get device nodes (%s)\n", strerror(errno)); 27149e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat return -1; 27249e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat } 27349e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat 274a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat for (i = 0; i < n; i++) { 275a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat char devicePath[255]; 276dd9b8e92aaf330b48ddb40a7380588ef92b53de6San Mehat 277a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat sprintf(devicePath, "/dev/block/vold/%d:%d", MAJOR(deviceNodes[i]), 278a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat MINOR(deviceNodes[i])); 279a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 280a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat LOGI("%s being considered for volume %s\n", devicePath, getLabel()); 281a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 282a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat errno = 0; 283bf04185c88161f13118b9975cdff7967d49a4fa0San Mehat setState(Volume::State_Checking); 284bf04185c88161f13118b9975cdff7967d49a4fa0San Mehat 2853bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat if (Fat::check(devicePath)) { 286a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat if (errno == ENODATA) { 287a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat LOGW("%s does not contain a FAT filesystem\n", devicePath); 288a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat continue; 289a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 290eba65e9d438a05f1c5dfd0f8d31bc463a5d08eeeSan Mehat errno = EIO; 291eba65e9d438a05f1c5dfd0f8d31bc463a5d08eeeSan Mehat /* Badness - abort the mount */ 292eba65e9d438a05f1c5dfd0f8d31bc463a5d08eeeSan Mehat LOGE("%s failed FS checks (%s)", devicePath, strerror(errno)); 293eba65e9d438a05f1c5dfd0f8d31bc463a5d08eeeSan Mehat setState(Volume::State_Idle); 294eba65e9d438a05f1c5dfd0f8d31bc463a5d08eeeSan Mehat return -1; 295a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 296a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 2973bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat /* 2983bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat * Mount the device on our internal staging mountpoint so we can 2993bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat * muck with it before exposing it to non priviledged users. 3003bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat */ 301a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat errno = 0; 3023bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat if (Fat::doMount(devicePath, "/mnt/secure/staging", false, false, 1000, 1015, 0702, true)) { 3033bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat LOGE("%s failed to mount via VFAT (%s)\n", devicePath, strerror(errno)); 3043bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat continue; 305a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 306a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 3073bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat LOGI("Device %s, target %s mounted @ /mnt/secure/staging", devicePath, getMountpoint()); 3083bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat 3093bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat if (createBindMounts()) { 3103bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat LOGE("Failed to create bindmounts (%s)", strerror(errno)); 3113bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat umount("/mnt/secure/staging"); 3123bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat setState(Volume::State_Idle); 3133bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat return -1; 3143bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat } 3153bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat 3163bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat /* 3173bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat * Now that the bindmount trickery is done, atomically move the 3183bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat * whole subtree to expose it to non priviledged users. 3193bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat */ 3203bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat if (doMoveMount("/mnt/secure/staging", getMountpoint(), false)) { 3213bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat LOGE("Failed to move mount (%s)", strerror(errno)); 3223bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat umount("/mnt/secure/staging"); 3233bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat setState(Volume::State_Idle); 3243bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat return -1; 3253bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat } 3263bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat setState(Volume::State_Mounted); 3273bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat mCurrentlyMountedKdev = deviceNodes[i]; 3283bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat return 0; 329a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 330a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 331a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat LOGE("Volume %s found no suitable devices for mounting :(\n", getLabel()); 33249e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat setState(Volume::State_Idle); 333a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 334eba65e9d438a05f1c5dfd0f8d31bc463a5d08eeeSan Mehat return -1; 335a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat} 336a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 3373bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehatint Volume::createBindMounts() { 3383bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat unsigned long flags; 3393bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat 3403bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat /* 34152c2ccb6d25b94b96685efd4803226727710fbaeSan Mehat * Rename old /android_secure -> /.android_secure 34252c2ccb6d25b94b96685efd4803226727710fbaeSan Mehat */ 34352c2ccb6d25b94b96685efd4803226727710fbaeSan Mehat if (!access("/mnt/secure/staging/android_secure", R_OK | X_OK) && 34452c2ccb6d25b94b96685efd4803226727710fbaeSan Mehat access(SEC_STG_SECIMGDIR, R_OK | X_OK)) { 34552c2ccb6d25b94b96685efd4803226727710fbaeSan Mehat if (rename("/mnt/secure/staging/android_secure", SEC_STG_SECIMGDIR)) { 34652c2ccb6d25b94b96685efd4803226727710fbaeSan Mehat LOGE("Failed to rename legacy asec dir (%s)", strerror(errno)); 34752c2ccb6d25b94b96685efd4803226727710fbaeSan Mehat } 34852c2ccb6d25b94b96685efd4803226727710fbaeSan Mehat } 34952c2ccb6d25b94b96685efd4803226727710fbaeSan Mehat 35052c2ccb6d25b94b96685efd4803226727710fbaeSan Mehat /* 3513bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat * Ensure that /android_secure exists and is a directory 3523bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat */ 3533bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat if (access(SEC_STG_SECIMGDIR, R_OK | X_OK)) { 3543bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat if (errno == ENOENT) { 3553bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat if (mkdir(SEC_STG_SECIMGDIR, 0777)) { 3563bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat LOGE("Failed to create %s (%s)", SEC_STG_SECIMGDIR, strerror(errno)); 3573bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat return -1; 3583bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat } 3593bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat } else { 3603bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat LOGE("Failed to access %s (%s)", SEC_STG_SECIMGDIR, strerror(errno)); 3613bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat return -1; 3623bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat } 3633bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat } else { 3643bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat struct stat sbuf; 365a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 3663bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat if (stat(SEC_STG_SECIMGDIR, &sbuf)) { 3673bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat LOGE("Failed to stat %s (%s)", SEC_STG_SECIMGDIR, strerror(errno)); 3683bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat return -1; 3693bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat } 3703bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat if (!S_ISDIR(sbuf.st_mode)) { 3713bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat LOGE("%s is not a directory", SEC_STG_SECIMGDIR); 3723bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat errno = ENOTDIR; 3733bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat return -1; 3743bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat } 3753bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat } 3763bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat 3773bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat /* 3783bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat * Bind mount /mnt/secure/staging/android_secure -> /mnt/secure/asec so we'll 3793bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat * have a root only accessable mountpoint for it. 3803bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat */ 3813bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat if (mount(SEC_STG_SECIMGDIR, SEC_ASECDIR, "", MS_BIND, NULL)) { 3823bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat LOGE("Failed to bind mount points %s -> %s (%s)", 3833bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat SEC_STG_SECIMGDIR, SEC_ASECDIR, strerror(errno)); 384a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return -1; 385a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 386a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 3873bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat /* 3883bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat * Mount a read-only, zero-sized tmpfs on <mountpoint>/android_secure to 3893bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat * obscure the underlying directory from everybody - sneaky eh? ;) 3903bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat */ 3913bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat if (mount("tmpfs", SEC_STG_SECIMGDIR, "tmpfs", MS_RDONLY, "size=0,mode=000,uid=0,gid=0")) { 3923bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat LOGE("Failed to obscure %s (%s)", SEC_STG_SECIMGDIR, strerror(errno)); 3933bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat umount("/mnt/asec_secure"); 3943bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat return -1; 3953bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat } 3963bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat 3973bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat return 0; 3983bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat} 3993bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat 4003bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehatint Volume::doMoveMount(const char *src, const char *dst, bool force) { 4013bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat unsigned int flags = MS_MOVE; 4023bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat int retries = 5; 4033bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat 4043bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat while(retries--) { 4053bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat if (!mount(src, dst, "", flags, NULL)) { 406d9a4e358614a0c5f60cc76c0636ee4bb02004a32San Mehat if (mDebug) { 407d9a4e358614a0c5f60cc76c0636ee4bb02004a32San Mehat LOGD("Moved mount %s -> %s sucessfully", src, dst); 408d9a4e358614a0c5f60cc76c0636ee4bb02004a32San Mehat } 4093bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat return 0; 4103bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat } else if (errno != EBUSY) { 4113bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat LOGE("Failed to move mount %s -> %s (%s)", src, dst, strerror(errno)); 4123bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat return -1; 4133bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat } 4143bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat int action = 0; 4153bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat 4163bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat if (force) { 4173bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat if (retries == 1) { 4183bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat action = 2; // SIGKILL 4193bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat } else if (retries == 2) { 4203bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat action = 1; // SIGHUP 4213bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat } 422a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 4233bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat LOGW("Failed to move %s -> %s (%s, retries %d, action %d)", 4243bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat src, dst, strerror(errno), retries, action); 4253bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat Process::killProcessesWithOpenFiles(src, action); 4263bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat usleep(1000*250); 4273bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat } 428a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 4293bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat errno = EBUSY; 4303bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat LOGE("Giving up on move %s -> %s (%s)", src, dst, strerror(errno)); 4313bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat return -1; 4323bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat} 4333bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat 4343bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehatint Volume::doUnmount(const char *path, bool force) { 4353bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat int retries = 10; 4363bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat 437d9a4e358614a0c5f60cc76c0636ee4bb02004a32San Mehat if (mDebug) { 438d9a4e358614a0c5f60cc76c0636ee4bb02004a32San Mehat LOGD("Unmounting {%s}, force = %d", path, force); 439d9a4e358614a0c5f60cc76c0636ee4bb02004a32San Mehat } 440d9a4e358614a0c5f60cc76c0636ee4bb02004a32San Mehat 4413bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat while (retries--) { 4423bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat if (!umount(path) || errno == EINVAL || errno == ENOENT) { 4433bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat LOGI("%s sucessfully unmounted", path); 4443bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat return 0; 4453bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat } 4468c940ef7dbd423cadc92982b44a65ed1014389e2San Mehat 4474ba8948dc16463053e21cda5744f519a555080d0San Mehat int action = 0; 4488c940ef7dbd423cadc92982b44a65ed1014389e2San Mehat 4494ba8948dc16463053e21cda5744f519a555080d0San Mehat if (force) { 4503bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat if (retries == 1) { 4514ba8948dc16463053e21cda5744f519a555080d0San Mehat action = 2; // SIGKILL 4523bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat } else if (retries == 2) { 4534ba8948dc16463053e21cda5744f519a555080d0San Mehat action = 1; // SIGHUP 4544ba8948dc16463053e21cda5744f519a555080d0San Mehat } 4554ba8948dc16463053e21cda5744f519a555080d0San Mehat } 4568c940ef7dbd423cadc92982b44a65ed1014389e2San Mehat 4573bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat LOGW("Failed to unmount %s (%s, retries %d, action %d)", 4583bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat path, strerror(errno), retries, action); 4593bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat 4603bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat Process::killProcessesWithOpenFiles(path, action); 4614ba8948dc16463053e21cda5744f519a555080d0San Mehat usleep(1000*1000); 462a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 4633bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat errno = EBUSY; 4643bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat LOGE("Giving up on unmount %s (%s)", path, strerror(errno)); 4653bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat return -1; 4663bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat} 467a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 4683bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehatint Volume::unmountVol(bool force) { 4693bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat int i, rc; 4703bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat 4713bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat if (getState() != Volume::State_Mounted) { 4723bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat LOGE("Volume %s unmount request when not mounted", getLabel()); 4733bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat errno = EINVAL; 4743bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat return -1; 4753bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat } 4763bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat 4773bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat setState(Volume::State_Unmounting); 4783bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat usleep(1000 * 1000); // Give the framework some time to react 4793bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat 4803bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat /* 4813bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat * First move the mountpoint back to our internal staging point 4823bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat * so nobody else can muck with it while we work. 4833bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat */ 4843bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat if (doMoveMount(getMountpoint(), SEC_STGDIR, force)) { 4853bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat LOGE("Failed to move mount %s => %s (%s)", getMountpoint(), SEC_STGDIR, strerror(errno)); 4863bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat setState(Volume::State_Mounted); 4873bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat return -1; 4883bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat } 4893bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat 4903bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat /* 4913bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat * Unmount the tmpfs which was obscuring the asec image directory 4923bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat * from non root users 4933bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat */ 4943bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat 4953bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat if (doUnmount(Volume::SEC_STG_SECIMGDIR, force)) { 4963bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat LOGE("Failed to unmount tmpfs on %s (%s)", SEC_STG_SECIMGDIR, strerror(errno)); 4973bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat goto fail_republish; 4983bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat } 4993bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat 5003bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat /* 5013bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat * Remove the bindmount we were using to keep a reference to 5023bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat * the previously obscured directory. 5033bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat */ 5043bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat 5053bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat if (doUnmount(Volume::SEC_ASECDIR, force)) { 5063bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat LOGE("Failed to remove bindmount on %s (%s)", SEC_ASECDIR, strerror(errno)); 5073bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat goto fail_remount_tmpfs; 5083bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat } 5093bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat 5103bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat /* 5113bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat * Finally, unmount the actual block device from the staging dir 5123bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat */ 5133bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat if (doUnmount(Volume::SEC_STGDIR, force)) { 5143bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat LOGE("Failed to unmount %s (%s)", SEC_STGDIR, strerror(errno)); 5153bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat goto fail_recreate_bindmount; 5163bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat } 5173bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat 5183bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat LOGI("%s unmounted sucessfully", getMountpoint()); 5193bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat 5203bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat setState(Volume::State_Idle); 5213bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat mCurrentlyMountedKdev = -1; 5223bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat return 0; 5233bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat 5243bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat /* 5253bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat * Failure handling - try to restore everything back the way it was 5263bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat */ 5273bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehatfail_recreate_bindmount: 5283bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat if (mount(SEC_STG_SECIMGDIR, SEC_ASECDIR, "", MS_BIND, NULL)) { 5293bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat LOGE("Failed to restore bindmount after failure! - Storage will appear offline!"); 5303bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat goto out_nomedia; 5313bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat } 5323bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehatfail_remount_tmpfs: 5333bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat if (mount("tmpfs", SEC_STG_SECIMGDIR, "tmpfs", MS_RDONLY, "size=0,mode=0,uid=0,gid=0")) { 5343bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat LOGE("Failed to restore tmpfs after failure! - Storage will appear offline!"); 5353bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat goto out_nomedia; 5363bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat } 5373bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehatfail_republish: 5383bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat if (doMoveMount(SEC_STGDIR, getMountpoint(), force)) { 5393bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat LOGE("Failed to republish mount after failure! - Storage will appear offline!"); 5403bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat goto out_nomedia; 541a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 542a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 543a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat setState(Volume::State_Mounted); 544a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return -1; 5453bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat 5463bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehatout_nomedia: 5473bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat setState(Volume::State_NoMedia); 5483bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat return -1; 549a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat} 550a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 551a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehatint Volume::initializeMbr(const char *deviceNode) { 5522a5b8ce09b8836a8463ef9beaaff865c36ca5e6aSan Mehat struct disk_info dinfo; 553a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 5542a5b8ce09b8836a8463ef9beaaff865c36ca5e6aSan Mehat memset(&dinfo, 0, sizeof(dinfo)); 555a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 5562a5b8ce09b8836a8463ef9beaaff865c36ca5e6aSan Mehat if (!(dinfo.part_lst = (struct part_info *) malloc(MAX_NUM_PARTS * sizeof(struct part_info)))) { 5572a5b8ce09b8836a8463ef9beaaff865c36ca5e6aSan Mehat LOGE("Failed to malloc prt_lst"); 558a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return -1; 559a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 560a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 5612a5b8ce09b8836a8463ef9beaaff865c36ca5e6aSan Mehat memset(dinfo.part_lst, 0, MAX_NUM_PARTS * sizeof(struct part_info)); 5622a5b8ce09b8836a8463ef9beaaff865c36ca5e6aSan Mehat dinfo.device = strdup(deviceNode); 5632a5b8ce09b8836a8463ef9beaaff865c36ca5e6aSan Mehat dinfo.scheme = PART_SCHEME_MBR; 5642a5b8ce09b8836a8463ef9beaaff865c36ca5e6aSan Mehat dinfo.sect_size = 512; 5652a5b8ce09b8836a8463ef9beaaff865c36ca5e6aSan Mehat dinfo.skip_lba = 2048; 5662a5b8ce09b8836a8463ef9beaaff865c36ca5e6aSan Mehat dinfo.num_lba = 0; 5672a5b8ce09b8836a8463ef9beaaff865c36ca5e6aSan Mehat dinfo.num_parts = 1; 568a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 5692a5b8ce09b8836a8463ef9beaaff865c36ca5e6aSan Mehat struct part_info *pinfo = &dinfo.part_lst[0]; 570a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 5712a5b8ce09b8836a8463ef9beaaff865c36ca5e6aSan Mehat pinfo->name = strdup("android_sdcard"); 5722a5b8ce09b8836a8463ef9beaaff865c36ca5e6aSan Mehat pinfo->flags |= PART_ACTIVE_FLAG; 5732a5b8ce09b8836a8463ef9beaaff865c36ca5e6aSan Mehat pinfo->type = PC_PART_TYPE_FAT32; 5742a5b8ce09b8836a8463ef9beaaff865c36ca5e6aSan Mehat pinfo->len_kb = -1; 575a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 5762a5b8ce09b8836a8463ef9beaaff865c36ca5e6aSan Mehat int rc = apply_disk_config(&dinfo, 0); 577a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 5782a5b8ce09b8836a8463ef9beaaff865c36ca5e6aSan Mehat if (rc) { 5792a5b8ce09b8836a8463ef9beaaff865c36ca5e6aSan Mehat LOGE("Failed to apply disk configuration (%d)", rc); 5802a5b8ce09b8836a8463ef9beaaff865c36ca5e6aSan Mehat goto out; 581a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 5822a5b8ce09b8836a8463ef9beaaff865c36ca5e6aSan Mehat 5832a5b8ce09b8836a8463ef9beaaff865c36ca5e6aSan Mehat out: 5842a5b8ce09b8836a8463ef9beaaff865c36ca5e6aSan Mehat free(pinfo->name); 5852a5b8ce09b8836a8463ef9beaaff865c36ca5e6aSan Mehat free(dinfo.device); 5862a5b8ce09b8836a8463ef9beaaff865c36ca5e6aSan Mehat free(dinfo.part_lst); 5872a5b8ce09b8836a8463ef9beaaff865c36ca5e6aSan Mehat 5882a5b8ce09b8836a8463ef9beaaff865c36ca5e6aSan Mehat return rc; 589a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat} 590