Volume.cpp revision 52c2ccb6d25b94b96685efd4803226727710fbae
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 33a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat#include "diskmbr.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; 103f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat mLabel = strdup(label); 104f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat mMountpoint = strdup(mount_point); 105f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat mState = Volume::State_Init; 106a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat mCurrentlyMountedKdev = -1; 107f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat} 108f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat 109f1b736bc5605e92e917ab27f5abf3ba839be2270San MehatVolume::~Volume() { 110f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat free(mLabel); 111f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat free(mMountpoint); 112f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat} 113f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat 114a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehatdev_t Volume::getDiskDevice() { 115a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return MKDEV(0, 0); 116a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat}; 117a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 118a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehatvoid Volume::handleVolumeShared() { 119a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat} 120a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 121a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehatvoid Volume::handleVolumeUnshared() { 122a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat} 123a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 124fd7f5875129adfe2845f4f3fffb17db3a89eea25San Mehatint Volume::handleBlockEvent(NetlinkEvent *evt) { 125f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat errno = ENOSYS; 126f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat return -1; 127f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat} 128f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat 129f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehatvoid Volume::setState(int state) { 130a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat char msg[255]; 131a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat int oldState = mState; 132a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 133a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat if (oldState == state) { 134a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat LOGW("Duplicate state (%d)\n", state); 135a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return; 136a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 137a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 138f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat mState = state; 139a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 140a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat LOGD("Volume %s state changing %d (%s) -> %d (%s)", mLabel, 141a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat oldState, stateToStr(oldState), mState, stateToStr(mState)); 142a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat snprintf(msg, sizeof(msg), 143a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat "Volume %s %s state changed from %d (%s) to %d (%s)", getLabel(), 144a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat getMountpoint(), oldState, stateToStr(oldState), mState, 145a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat stateToStr(mState)); 146a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 147a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat mVm->getBroadcaster()->sendBroadcast(ResponseCode::VolumeStateChange, 148a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat msg, false); 149f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat} 15049e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat 151dd9b8e92aaf330b48ddb40a7380588ef92b53de6San Mehatint Volume::createDeviceNode(const char *path, int major, int minor) { 152dd9b8e92aaf330b48ddb40a7380588ef92b53de6San Mehat mode_t mode = 0660 | S_IFBLK; 153dd9b8e92aaf330b48ddb40a7380588ef92b53de6San Mehat dev_t dev = (major << 8) | minor; 154dd9b8e92aaf330b48ddb40a7380588ef92b53de6San Mehat if (mknod(path, mode, dev) < 0) { 155dd9b8e92aaf330b48ddb40a7380588ef92b53de6San Mehat if (errno != EEXIST) { 156dd9b8e92aaf330b48ddb40a7380588ef92b53de6San Mehat return -1; 157dd9b8e92aaf330b48ddb40a7380588ef92b53de6San Mehat } 158dd9b8e92aaf330b48ddb40a7380588ef92b53de6San Mehat } 159dd9b8e92aaf330b48ddb40a7380588ef92b53de6San Mehat return 0; 160dd9b8e92aaf330b48ddb40a7380588ef92b53de6San Mehat} 161dd9b8e92aaf330b48ddb40a7380588ef92b53de6San Mehat 162a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehatint Volume::formatVol() { 16349e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat 164a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat if (getState() == Volume::State_NoMedia) { 165a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat errno = ENODEV; 16649e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat return -1; 167a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } else if (getState() != Volume::State_Idle) { 168a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat errno = EBUSY; 169a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return -1; 170a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 171a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 172a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat if (isMountpointMounted(getMountpoint())) { 173a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat LOGW("Volume is idle but appears to be mounted - fixing"); 174a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat setState(Volume::State_Mounted); 175a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat // mCurrentlyMountedKdev = XXX 176a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat errno = EBUSY; 177a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return -1; 178a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 179a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 180a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat char devicePath[255]; 181a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat dev_t diskNode = getDiskDevice(); 182a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat dev_t partNode = MKDEV(MAJOR(diskNode), 1); // XXX: Hmmm 183a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 184a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat sprintf(devicePath, "/dev/block/vold/%d:%d", 185a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat MAJOR(diskNode), MINOR(diskNode)); 186a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 18762e5dd245bd508eabcba56b5680e2b28bfc2caf6San Mehat LOGI("Formatting volume %s (%s)", getLabel(), devicePath); 188a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 189a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat if (initializeMbr(devicePath)) { 190a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat LOGE("Failed to initialize MBR (%s)", strerror(errno)); 191a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat goto err; 192a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 193a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 194a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat sprintf(devicePath, "/dev/block/vold/%d:%d", 195a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat MAJOR(partNode), MINOR(partNode)); 196a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 197bf04185c88161f13118b9975cdff7967d49a4fa0San Mehat if (Fat::format(devicePath)) { 198a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat LOGE("Failed to format (%s)", strerror(errno)); 199a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat goto err; 200a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 201a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 202a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return 0; 203a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehaterr: 204a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return -1; 205a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat} 206a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 207a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehatbool Volume::isMountpointMounted(const char *path) { 208a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat char device[256]; 209a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat char mount_path[256]; 210a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat char rest[256]; 211a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat FILE *fp; 212a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat char line[1024]; 213a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 214a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat if (!(fp = fopen("/proc/mounts", "r"))) { 215a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat LOGE("Error opening /proc/mounts (%s)", strerror(errno)); 216a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return false; 21749e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat } 21849e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat 219a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat while(fgets(line, sizeof(line), fp)) { 220a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat line[strlen(line)-1] = '\0'; 221a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat sscanf(line, "%255s %255s %255s\n", device, mount_path, rest); 222a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat if (!strcmp(mount_path, path)) { 223a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat fclose(fp); 224a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return true; 225a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 226dd9b8e92aaf330b48ddb40a7380588ef92b53de6San Mehat 227a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 228dd9b8e92aaf330b48ddb40a7380588ef92b53de6San Mehat 229a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat fclose(fp); 230a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return false; 231a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat} 232a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 233a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehatint Volume::mountVol() { 234a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat dev_t deviceNodes[4]; 235a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat int n, i, rc = 0; 236a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat char errmsg[255]; 237a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 238a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat if (getState() == Volume::State_NoMedia) { 239a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat snprintf(errmsg, sizeof(errmsg), 240a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat "Volume %s %s mount failed - no media", 241a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat getLabel(), getMountpoint()); 242a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat mVm->getBroadcaster()->sendBroadcast( 243a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat ResponseCode::VolumeMountFailedNoMedia, 244a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat errmsg, false); 245a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat errno = ENODEV; 246a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return -1; 247a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } else if (getState() != Volume::State_Idle) { 248a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat errno = EBUSY; 24949e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat return -1; 25049e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat } 25149e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat 252a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat if (isMountpointMounted(getMountpoint())) { 253a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat LOGW("Volume is idle but appears to be mounted - fixing"); 254a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat setState(Volume::State_Mounted); 255a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat // mCurrentlyMountedKdev = XXX 256a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return 0; 257a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 258a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 259a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat n = getDeviceNodes((dev_t *) &deviceNodes, 4); 260a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat if (!n) { 261a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat LOGE("Failed to get device nodes (%s)\n", strerror(errno)); 26249e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat return -1; 26349e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat } 26449e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat 265a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat for (i = 0; i < n; i++) { 266a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat char devicePath[255]; 267dd9b8e92aaf330b48ddb40a7380588ef92b53de6San Mehat 268a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat sprintf(devicePath, "/dev/block/vold/%d:%d", MAJOR(deviceNodes[i]), 269a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat MINOR(deviceNodes[i])); 270a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 271a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat LOGI("%s being considered for volume %s\n", devicePath, getLabel()); 272a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 273a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat errno = 0; 274bf04185c88161f13118b9975cdff7967d49a4fa0San Mehat setState(Volume::State_Checking); 275bf04185c88161f13118b9975cdff7967d49a4fa0San Mehat 2763bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat if (Fat::check(devicePath)) { 277a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat if (errno == ENODATA) { 278a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat LOGW("%s does not contain a FAT filesystem\n", devicePath); 279a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat continue; 280a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 281eba65e9d438a05f1c5dfd0f8d31bc463a5d08eeeSan Mehat errno = EIO; 282eba65e9d438a05f1c5dfd0f8d31bc463a5d08eeeSan Mehat /* Badness - abort the mount */ 283eba65e9d438a05f1c5dfd0f8d31bc463a5d08eeeSan Mehat LOGE("%s failed FS checks (%s)", devicePath, strerror(errno)); 284eba65e9d438a05f1c5dfd0f8d31bc463a5d08eeeSan Mehat setState(Volume::State_Idle); 285eba65e9d438a05f1c5dfd0f8d31bc463a5d08eeeSan Mehat return -1; 286a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 287a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 2883bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat /* 2893bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat * Mount the device on our internal staging mountpoint so we can 2903bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat * muck with it before exposing it to non priviledged users. 2913bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat */ 292a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat errno = 0; 2933bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat if (Fat::doMount(devicePath, "/mnt/secure/staging", false, false, 1000, 1015, 0702, true)) { 2943bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat LOGE("%s failed to mount via VFAT (%s)\n", devicePath, strerror(errno)); 2953bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat continue; 296a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 297a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 2983bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat LOGI("Device %s, target %s mounted @ /mnt/secure/staging", devicePath, getMountpoint()); 2993bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat 3003bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat if (createBindMounts()) { 3013bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat LOGE("Failed to create bindmounts (%s)", strerror(errno)); 3023bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat umount("/mnt/secure/staging"); 3033bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat setState(Volume::State_Idle); 3043bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat return -1; 3053bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat } 3063bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat 3073bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat /* 3083bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat * Now that the bindmount trickery is done, atomically move the 3093bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat * whole subtree to expose it to non priviledged users. 3103bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat */ 3113bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat if (doMoveMount("/mnt/secure/staging", getMountpoint(), false)) { 3123bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat LOGE("Failed to move mount (%s)", strerror(errno)); 3133bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat umount("/mnt/secure/staging"); 3143bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat setState(Volume::State_Idle); 3153bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat return -1; 3163bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat } 3173bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat setState(Volume::State_Mounted); 3183bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat mCurrentlyMountedKdev = deviceNodes[i]; 3193bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat return 0; 320a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 321a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 322a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat LOGE("Volume %s found no suitable devices for mounting :(\n", getLabel()); 32349e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat setState(Volume::State_Idle); 324a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 325eba65e9d438a05f1c5dfd0f8d31bc463a5d08eeeSan Mehat return -1; 326a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat} 327a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 3283bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehatint Volume::createBindMounts() { 3293bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat unsigned long flags; 3303bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat 3313bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat /* 33252c2ccb6d25b94b96685efd4803226727710fbaeSan Mehat * Rename old /android_secure -> /.android_secure 33352c2ccb6d25b94b96685efd4803226727710fbaeSan Mehat */ 33452c2ccb6d25b94b96685efd4803226727710fbaeSan Mehat if (!access("/mnt/secure/staging/android_secure", R_OK | X_OK) && 33552c2ccb6d25b94b96685efd4803226727710fbaeSan Mehat access(SEC_STG_SECIMGDIR, R_OK | X_OK)) { 33652c2ccb6d25b94b96685efd4803226727710fbaeSan Mehat if (rename("/mnt/secure/staging/android_secure", SEC_STG_SECIMGDIR)) { 33752c2ccb6d25b94b96685efd4803226727710fbaeSan Mehat LOGE("Failed to rename legacy asec dir (%s)", strerror(errno)); 33852c2ccb6d25b94b96685efd4803226727710fbaeSan Mehat } 33952c2ccb6d25b94b96685efd4803226727710fbaeSan Mehat } 34052c2ccb6d25b94b96685efd4803226727710fbaeSan Mehat 34152c2ccb6d25b94b96685efd4803226727710fbaeSan Mehat /* 3423bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat * Ensure that /android_secure exists and is a directory 3433bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat */ 3443bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat if (access(SEC_STG_SECIMGDIR, R_OK | X_OK)) { 3453bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat if (errno == ENOENT) { 3463bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat if (mkdir(SEC_STG_SECIMGDIR, 0777)) { 3473bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat LOGE("Failed to create %s (%s)", SEC_STG_SECIMGDIR, strerror(errno)); 3483bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat return -1; 3493bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat } 3503bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat } else { 3513bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat LOGE("Failed to access %s (%s)", SEC_STG_SECIMGDIR, strerror(errno)); 3523bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat return -1; 3533bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat } 3543bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat } else { 3553bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat struct stat sbuf; 356a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 3573bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat if (stat(SEC_STG_SECIMGDIR, &sbuf)) { 3583bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat LOGE("Failed to stat %s (%s)", SEC_STG_SECIMGDIR, strerror(errno)); 3593bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat return -1; 3603bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat } 3613bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat if (!S_ISDIR(sbuf.st_mode)) { 3623bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat LOGE("%s is not a directory", SEC_STG_SECIMGDIR); 3633bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat errno = ENOTDIR; 3643bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat return -1; 3653bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat } 3663bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat } 3673bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat 3683bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat /* 3693bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat * Bind mount /mnt/secure/staging/android_secure -> /mnt/secure/asec so we'll 3703bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat * have a root only accessable mountpoint for it. 3713bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat */ 3723bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat if (mount(SEC_STG_SECIMGDIR, SEC_ASECDIR, "", MS_BIND, NULL)) { 3733bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat LOGE("Failed to bind mount points %s -> %s (%s)", 3743bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat SEC_STG_SECIMGDIR, SEC_ASECDIR, strerror(errno)); 375a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return -1; 376a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 377a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 3783bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat /* 3793bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat * Mount a read-only, zero-sized tmpfs on <mountpoint>/android_secure to 3803bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat * obscure the underlying directory from everybody - sneaky eh? ;) 3813bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat */ 3823bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat if (mount("tmpfs", SEC_STG_SECIMGDIR, "tmpfs", MS_RDONLY, "size=0,mode=000,uid=0,gid=0")) { 3833bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat LOGE("Failed to obscure %s (%s)", SEC_STG_SECIMGDIR, strerror(errno)); 3843bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat umount("/mnt/asec_secure"); 3853bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat return -1; 3863bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat } 3873bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat 3883bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat return 0; 3893bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat} 3903bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat 3913bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehatint Volume::doMoveMount(const char *src, const char *dst, bool force) { 3923bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat unsigned int flags = MS_MOVE; 3933bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat int retries = 5; 3943bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat 3953bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat while(retries--) { 3963bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat if (!mount(src, dst, "", flags, NULL)) { 3973bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat LOGD("Moved mount %s -> %s sucessfully", src, dst); 3983bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat return 0; 3993bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat } else if (errno != EBUSY) { 4003bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat LOGE("Failed to move mount %s -> %s (%s)", src, dst, strerror(errno)); 4013bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat return -1; 4023bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat } 4033bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat int action = 0; 4043bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat 4053bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat if (force) { 4063bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat if (retries == 1) { 4073bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat action = 2; // SIGKILL 4083bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat } else if (retries == 2) { 4093bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat action = 1; // SIGHUP 4103bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat } 411a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 4123bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat LOGW("Failed to move %s -> %s (%s, retries %d, action %d)", 4133bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat src, dst, strerror(errno), retries, action); 4143bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat Process::killProcessesWithOpenFiles(src, action); 4153bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat usleep(1000*250); 4163bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat } 417a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 4183bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat errno = EBUSY; 4193bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat LOGE("Giving up on move %s -> %s (%s)", src, dst, strerror(errno)); 4203bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat return -1; 4213bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat} 4223bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat 4233bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehatint Volume::doUnmount(const char *path, bool force) { 4243bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat int retries = 10; 4253bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat 4263bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat while (retries--) { 4273bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat if (!umount(path) || errno == EINVAL || errno == ENOENT) { 4283bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat LOGI("%s sucessfully unmounted", path); 4293bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat return 0; 4303bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat } 4318c940ef7dbd423cadc92982b44a65ed1014389e2San Mehat 4324ba8948dc16463053e21cda5744f519a555080d0San Mehat int action = 0; 4338c940ef7dbd423cadc92982b44a65ed1014389e2San Mehat 4344ba8948dc16463053e21cda5744f519a555080d0San Mehat if (force) { 4353bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat if (retries == 1) { 4364ba8948dc16463053e21cda5744f519a555080d0San Mehat action = 2; // SIGKILL 4373bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat } else if (retries == 2) { 4384ba8948dc16463053e21cda5744f519a555080d0San Mehat action = 1; // SIGHUP 4394ba8948dc16463053e21cda5744f519a555080d0San Mehat } 4404ba8948dc16463053e21cda5744f519a555080d0San Mehat } 4418c940ef7dbd423cadc92982b44a65ed1014389e2San Mehat 4423bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat LOGW("Failed to unmount %s (%s, retries %d, action %d)", 4433bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat path, strerror(errno), retries, action); 4443bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat 4453bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat Process::killProcessesWithOpenFiles(path, action); 4464ba8948dc16463053e21cda5744f519a555080d0San Mehat usleep(1000*1000); 447a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 4483bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat errno = EBUSY; 4493bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat LOGE("Giving up on unmount %s (%s)", path, strerror(errno)); 4503bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat return -1; 4513bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat} 452a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 4533bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehatint Volume::unmountVol(bool force) { 4543bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat int i, rc; 4553bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat 4563bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat if (getState() != Volume::State_Mounted) { 4573bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat LOGE("Volume %s unmount request when not mounted", getLabel()); 4583bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat errno = EINVAL; 4593bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat return -1; 4603bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat } 4613bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat 4623bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat setState(Volume::State_Unmounting); 4633bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat usleep(1000 * 1000); // Give the framework some time to react 4643bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat 4653bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat /* 4663bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat * First move the mountpoint back to our internal staging point 4673bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat * so nobody else can muck with it while we work. 4683bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat */ 4693bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat if (doMoveMount(getMountpoint(), SEC_STGDIR, force)) { 4703bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat LOGE("Failed to move mount %s => %s (%s)", getMountpoint(), SEC_STGDIR, strerror(errno)); 4713bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat setState(Volume::State_Mounted); 4723bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat return -1; 4733bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat } 4743bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat 4753bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat /* 4763bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat * Unmount the tmpfs which was obscuring the asec image directory 4773bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat * from non root users 4783bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat */ 4793bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat 4803bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat if (doUnmount(Volume::SEC_STG_SECIMGDIR, force)) { 4813bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat LOGE("Failed to unmount tmpfs on %s (%s)", SEC_STG_SECIMGDIR, strerror(errno)); 4823bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat goto fail_republish; 4833bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat } 4843bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat 4853bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat /* 4863bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat * Remove the bindmount we were using to keep a reference to 4873bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat * the previously obscured directory. 4883bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat */ 4893bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat 4903bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat if (doUnmount(Volume::SEC_ASECDIR, force)) { 4913bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat LOGE("Failed to remove bindmount on %s (%s)", SEC_ASECDIR, strerror(errno)); 4923bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat goto fail_remount_tmpfs; 4933bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat } 4943bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat 4953bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat /* 4963bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat * Finally, unmount the actual block device from the staging dir 4973bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat */ 4983bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat if (doUnmount(Volume::SEC_STGDIR, force)) { 4993bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat LOGE("Failed to unmount %s (%s)", SEC_STGDIR, strerror(errno)); 5003bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat goto fail_recreate_bindmount; 5013bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat } 5023bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat 5033bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat LOGI("%s unmounted sucessfully", getMountpoint()); 5043bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat 5053bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat setState(Volume::State_Idle); 5063bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat mCurrentlyMountedKdev = -1; 5073bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat return 0; 5083bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat 5093bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat /* 5103bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat * Failure handling - try to restore everything back the way it was 5113bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat */ 5123bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehatfail_recreate_bindmount: 5133bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat if (mount(SEC_STG_SECIMGDIR, SEC_ASECDIR, "", MS_BIND, NULL)) { 5143bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat LOGE("Failed to restore bindmount after failure! - Storage will appear offline!"); 5153bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat goto out_nomedia; 5163bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat } 5173bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehatfail_remount_tmpfs: 5183bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat if (mount("tmpfs", SEC_STG_SECIMGDIR, "tmpfs", MS_RDONLY, "size=0,mode=0,uid=0,gid=0")) { 5193bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat LOGE("Failed to restore tmpfs after failure! - Storage will appear offline!"); 5203bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat goto out_nomedia; 5213bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat } 5223bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehatfail_republish: 5233bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat if (doMoveMount(SEC_STGDIR, getMountpoint(), force)) { 5243bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat LOGE("Failed to republish mount after failure! - Storage will appear offline!"); 5253bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat goto out_nomedia; 526a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 527a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 528a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat setState(Volume::State_Mounted); 529a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return -1; 5303bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat 5313bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehatout_nomedia: 5323bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat setState(Volume::State_NoMedia); 5333bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat return -1; 534a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat} 535a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 536a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehatint Volume::initializeMbr(const char *deviceNode) { 537a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat int fd, rc; 538a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat unsigned char block[512]; 539a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat struct dos_partition part; 540a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat unsigned int nr_sec; 541a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 542a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat if ((fd = open(deviceNode, O_RDWR)) < 0) { 543a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat LOGE("Error opening disk file (%s)", strerror(errno)); 544a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return -1; 545a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 546a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 547a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat if (ioctl(fd, BLKGETSIZE, &nr_sec)) { 548a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat LOGE("Unable to get device size (%s)", strerror(errno)); 549a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat close(fd); 550a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return -1; 551a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 552a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 553a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat memset(&part, 0, sizeof(part)); 554a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat part.dp_flag = 0x80; 555a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat part.dp_typ = 0xc; 556a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat part.dp_start = ((1024 * 64) / 512) + 1; 557a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat part.dp_size = nr_sec - part.dp_start; 558a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 559a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat memset(block, 0, sizeof(block)); 560a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat block[0x1fe] = 0x55; 561a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat block[0x1ff] = 0xaa; 562a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 563a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat dos_partition_enc(block + DOSPARTOFF, &part); 564a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 565a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat if (write(fd, block, sizeof(block)) < 0) { 566a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat LOGE("Error writing MBR (%s)", strerror(errno)); 567a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat close(fd); 568a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return -1; 569a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 570a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 571a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat if (ioctl(fd, BLKRRPART, NULL) < 0) { 572a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat LOGE("Error re-reading partition table (%s)", strerror(errno)); 573a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat close(fd); 574a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return -1; 575a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 576a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat close(fd); 577a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return 0; 578a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat} 579