Volume.cpp revision 97ac40e4e6f3ed0bd5d6878d7d8d4a54fcaecb76
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 115cb4dac8a5243f6673b0590019b5b28a01bd3e343San Mehatvoid Volume::protectFromAutorunStupidity() { 116cb4dac8a5243f6673b0590019b5b28a01bd3e343San Mehat char filename[255]; 117cb4dac8a5243f6673b0590019b5b28a01bd3e343San Mehat 118cb4dac8a5243f6673b0590019b5b28a01bd3e343San Mehat snprintf(filename, sizeof(filename), "%s/autorun.inf", SEC_STGDIR); 119cb4dac8a5243f6673b0590019b5b28a01bd3e343San Mehat if (!access(filename, F_OK)) { 12097ac40e4e6f3ed0bd5d6878d7d8d4a54fcaecb76San Mehat SLOGW("Volume contains an autorun.inf! - removing"); 121cb4dac8a5243f6673b0590019b5b28a01bd3e343San Mehat /* 122cb4dac8a5243f6673b0590019b5b28a01bd3e343San Mehat * Ensure the filename is all lower-case so 123cb4dac8a5243f6673b0590019b5b28a01bd3e343San Mehat * the process killer can find the inode. 124cb4dac8a5243f6673b0590019b5b28a01bd3e343San Mehat * Probably being paranoid here but meh. 125cb4dac8a5243f6673b0590019b5b28a01bd3e343San Mehat */ 126cb4dac8a5243f6673b0590019b5b28a01bd3e343San Mehat rename(filename, filename); 127cb4dac8a5243f6673b0590019b5b28a01bd3e343San Mehat Process::killProcessesWithOpenFiles(filename, 2); 128cb4dac8a5243f6673b0590019b5b28a01bd3e343San Mehat if (unlink(filename)) { 12997ac40e4e6f3ed0bd5d6878d7d8d4a54fcaecb76San Mehat SLOGE("Failed to remove %s (%s)", filename, strerror(errno)); 130cb4dac8a5243f6673b0590019b5b28a01bd3e343San Mehat } 131cb4dac8a5243f6673b0590019b5b28a01bd3e343San Mehat } 132cb4dac8a5243f6673b0590019b5b28a01bd3e343San Mehat} 133cb4dac8a5243f6673b0590019b5b28a01bd3e343San Mehat 134d9a4e358614a0c5f60cc76c0636ee4bb02004a32San Mehatvoid Volume::setDebug(bool enable) { 135d9a4e358614a0c5f60cc76c0636ee4bb02004a32San Mehat mDebug = enable; 136d9a4e358614a0c5f60cc76c0636ee4bb02004a32San Mehat} 137d9a4e358614a0c5f60cc76c0636ee4bb02004a32San Mehat 138a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehatdev_t Volume::getDiskDevice() { 139a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return MKDEV(0, 0); 140a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat}; 141a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 142a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehatvoid Volume::handleVolumeShared() { 143a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat} 144a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 145a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehatvoid Volume::handleVolumeUnshared() { 146a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat} 147a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 148fd7f5875129adfe2845f4f3fffb17db3a89eea25San Mehatint Volume::handleBlockEvent(NetlinkEvent *evt) { 149f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat errno = ENOSYS; 150f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat return -1; 151f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat} 152f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat 153f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehatvoid Volume::setState(int state) { 154a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat char msg[255]; 155a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat int oldState = mState; 156a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 157a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat if (oldState == state) { 15897ac40e4e6f3ed0bd5d6878d7d8d4a54fcaecb76San Mehat SLOGW("Duplicate state (%d)\n", state); 159a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return; 160a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 161a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 162f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat mState = state; 163a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 16497ac40e4e6f3ed0bd5d6878d7d8d4a54fcaecb76San Mehat SLOGD("Volume %s state changing %d (%s) -> %d (%s)", mLabel, 165a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat oldState, stateToStr(oldState), mState, stateToStr(mState)); 166a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat snprintf(msg, sizeof(msg), 167a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat "Volume %s %s state changed from %d (%s) to %d (%s)", getLabel(), 168a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat getMountpoint(), oldState, stateToStr(oldState), mState, 169a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat stateToStr(mState)); 170a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 171a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat mVm->getBroadcaster()->sendBroadcast(ResponseCode::VolumeStateChange, 172a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat msg, false); 173f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat} 17449e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat 175dd9b8e92aaf330b48ddb40a7380588ef92b53de6San Mehatint Volume::createDeviceNode(const char *path, int major, int minor) { 176dd9b8e92aaf330b48ddb40a7380588ef92b53de6San Mehat mode_t mode = 0660 | S_IFBLK; 177dd9b8e92aaf330b48ddb40a7380588ef92b53de6San Mehat dev_t dev = (major << 8) | minor; 178dd9b8e92aaf330b48ddb40a7380588ef92b53de6San Mehat if (mknod(path, mode, dev) < 0) { 179dd9b8e92aaf330b48ddb40a7380588ef92b53de6San Mehat if (errno != EEXIST) { 180dd9b8e92aaf330b48ddb40a7380588ef92b53de6San Mehat return -1; 181dd9b8e92aaf330b48ddb40a7380588ef92b53de6San Mehat } 182dd9b8e92aaf330b48ddb40a7380588ef92b53de6San Mehat } 183dd9b8e92aaf330b48ddb40a7380588ef92b53de6San Mehat return 0; 184dd9b8e92aaf330b48ddb40a7380588ef92b53de6San Mehat} 185dd9b8e92aaf330b48ddb40a7380588ef92b53de6San Mehat 186a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehatint Volume::formatVol() { 18749e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat 188a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat if (getState() == Volume::State_NoMedia) { 189a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat errno = ENODEV; 19049e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat return -1; 191a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } else if (getState() != Volume::State_Idle) { 192a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat errno = EBUSY; 193a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return -1; 194a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 195a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 196a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat if (isMountpointMounted(getMountpoint())) { 19797ac40e4e6f3ed0bd5d6878d7d8d4a54fcaecb76San Mehat SLOGW("Volume is idle but appears to be mounted - fixing"); 198a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat setState(Volume::State_Mounted); 199a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat // mCurrentlyMountedKdev = XXX 200a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat errno = EBUSY; 201a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return -1; 202a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 203a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 204a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat char devicePath[255]; 205a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat dev_t diskNode = getDiskDevice(); 206a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat dev_t partNode = MKDEV(MAJOR(diskNode), 1); // XXX: Hmmm 207a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 208a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat sprintf(devicePath, "/dev/block/vold/%d:%d", 209a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat MAJOR(diskNode), MINOR(diskNode)); 210a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 211d9a4e358614a0c5f60cc76c0636ee4bb02004a32San Mehat if (mDebug) { 21297ac40e4e6f3ed0bd5d6878d7d8d4a54fcaecb76San Mehat SLOGI("Formatting volume %s (%s)", getLabel(), devicePath); 213d9a4e358614a0c5f60cc76c0636ee4bb02004a32San Mehat } 2142a5b8ce09b8836a8463ef9beaaff865c36ca5e6aSan Mehat setState(Volume::State_Formatting); 215a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 216a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat if (initializeMbr(devicePath)) { 21797ac40e4e6f3ed0bd5d6878d7d8d4a54fcaecb76San Mehat SLOGE("Failed to initialize MBR (%s)", strerror(errno)); 218a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat goto err; 219a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 220a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 221a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat sprintf(devicePath, "/dev/block/vold/%d:%d", 222a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat MAJOR(partNode), MINOR(partNode)); 223a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 224fcf24fe62f98c5d44431aa575555569c2c7a29b0San Mehat if (Fat::format(devicePath, 0)) { 22597ac40e4e6f3ed0bd5d6878d7d8d4a54fcaecb76San Mehat SLOGE("Failed to format (%s)", strerror(errno)); 226a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat goto err; 227a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 228a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 2292a5b8ce09b8836a8463ef9beaaff865c36ca5e6aSan Mehat setState(Volume::State_Idle); 230a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return 0; 231a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehaterr: 232a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return -1; 233a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat} 234a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 235a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehatbool Volume::isMountpointMounted(const char *path) { 236a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat char device[256]; 237a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat char mount_path[256]; 238a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat char rest[256]; 239a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat FILE *fp; 240a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat char line[1024]; 241a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 242a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat if (!(fp = fopen("/proc/mounts", "r"))) { 24397ac40e4e6f3ed0bd5d6878d7d8d4a54fcaecb76San Mehat SLOGE("Error opening /proc/mounts (%s)", strerror(errno)); 244a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return false; 24549e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat } 24649e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat 247a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat while(fgets(line, sizeof(line), fp)) { 248a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat line[strlen(line)-1] = '\0'; 249a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat sscanf(line, "%255s %255s %255s\n", device, mount_path, rest); 250a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat if (!strcmp(mount_path, path)) { 251a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat fclose(fp); 252a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return true; 253a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 254dd9b8e92aaf330b48ddb40a7380588ef92b53de6San Mehat 255a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 256dd9b8e92aaf330b48ddb40a7380588ef92b53de6San Mehat 257a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat fclose(fp); 258a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return false; 259a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat} 260a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 261a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehatint Volume::mountVol() { 262a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat dev_t deviceNodes[4]; 263a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat int n, i, rc = 0; 264a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat char errmsg[255]; 265a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 266a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat if (getState() == Volume::State_NoMedia) { 267a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat snprintf(errmsg, sizeof(errmsg), 268a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat "Volume %s %s mount failed - no media", 269a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat getLabel(), getMountpoint()); 270a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat mVm->getBroadcaster()->sendBroadcast( 271a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat ResponseCode::VolumeMountFailedNoMedia, 272a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat errmsg, false); 273a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat errno = ENODEV; 274a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return -1; 275a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } else if (getState() != Volume::State_Idle) { 276a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat errno = EBUSY; 27749e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat return -1; 27849e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat } 27949e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat 280a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat if (isMountpointMounted(getMountpoint())) { 28197ac40e4e6f3ed0bd5d6878d7d8d4a54fcaecb76San Mehat SLOGW("Volume is idle but appears to be mounted - fixing"); 282a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat setState(Volume::State_Mounted); 283a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat // mCurrentlyMountedKdev = XXX 284a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return 0; 285a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 286a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 287a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat n = getDeviceNodes((dev_t *) &deviceNodes, 4); 288a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat if (!n) { 28997ac40e4e6f3ed0bd5d6878d7d8d4a54fcaecb76San Mehat SLOGE("Failed to get device nodes (%s)\n", strerror(errno)); 29049e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat return -1; 29149e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat } 29249e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat 293a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat for (i = 0; i < n; i++) { 294a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat char devicePath[255]; 295dd9b8e92aaf330b48ddb40a7380588ef92b53de6San Mehat 296a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat sprintf(devicePath, "/dev/block/vold/%d:%d", MAJOR(deviceNodes[i]), 297a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat MINOR(deviceNodes[i])); 298a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 29997ac40e4e6f3ed0bd5d6878d7d8d4a54fcaecb76San Mehat SLOGI("%s being considered for volume %s\n", devicePath, getLabel()); 300a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 301a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat errno = 0; 302bf04185c88161f13118b9975cdff7967d49a4fa0San Mehat setState(Volume::State_Checking); 303bf04185c88161f13118b9975cdff7967d49a4fa0San Mehat 3043bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat if (Fat::check(devicePath)) { 305a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat if (errno == ENODATA) { 30697ac40e4e6f3ed0bd5d6878d7d8d4a54fcaecb76San Mehat SLOGW("%s does not contain a FAT filesystem\n", devicePath); 307a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat continue; 308a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 309eba65e9d438a05f1c5dfd0f8d31bc463a5d08eeeSan Mehat errno = EIO; 310eba65e9d438a05f1c5dfd0f8d31bc463a5d08eeeSan Mehat /* Badness - abort the mount */ 31197ac40e4e6f3ed0bd5d6878d7d8d4a54fcaecb76San Mehat SLOGE("%s failed FS checks (%s)", devicePath, strerror(errno)); 312eba65e9d438a05f1c5dfd0f8d31bc463a5d08eeeSan Mehat setState(Volume::State_Idle); 313eba65e9d438a05f1c5dfd0f8d31bc463a5d08eeeSan Mehat return -1; 314a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 315a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 3163bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat /* 3173bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat * Mount the device on our internal staging mountpoint so we can 3183bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat * muck with it before exposing it to non priviledged users. 3193bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat */ 320a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat errno = 0; 3213bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat if (Fat::doMount(devicePath, "/mnt/secure/staging", false, false, 1000, 1015, 0702, true)) { 32297ac40e4e6f3ed0bd5d6878d7d8d4a54fcaecb76San Mehat SLOGE("%s failed to mount via VFAT (%s)\n", devicePath, strerror(errno)); 3233bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat continue; 324a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 325a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 32697ac40e4e6f3ed0bd5d6878d7d8d4a54fcaecb76San Mehat SLOGI("Device %s, target %s mounted @ /mnt/secure/staging", devicePath, getMountpoint()); 3273bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat 328cb4dac8a5243f6673b0590019b5b28a01bd3e343San Mehat protectFromAutorunStupidity(); 329cb4dac8a5243f6673b0590019b5b28a01bd3e343San Mehat 3303bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat if (createBindMounts()) { 33197ac40e4e6f3ed0bd5d6878d7d8d4a54fcaecb76San Mehat SLOGE("Failed to create bindmounts (%s)", strerror(errno)); 3323bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat umount("/mnt/secure/staging"); 3333bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat setState(Volume::State_Idle); 3343bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat return -1; 3353bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat } 3363bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat 3373bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat /* 3383bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat * Now that the bindmount trickery is done, atomically move the 3393bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat * whole subtree to expose it to non priviledged users. 3403bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat */ 3413bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat if (doMoveMount("/mnt/secure/staging", getMountpoint(), false)) { 34297ac40e4e6f3ed0bd5d6878d7d8d4a54fcaecb76San Mehat SLOGE("Failed to move mount (%s)", strerror(errno)); 3433bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat umount("/mnt/secure/staging"); 3443bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat setState(Volume::State_Idle); 3453bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat return -1; 3463bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat } 3473bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat setState(Volume::State_Mounted); 3483bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat mCurrentlyMountedKdev = deviceNodes[i]; 3493bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat return 0; 350a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 351a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 35297ac40e4e6f3ed0bd5d6878d7d8d4a54fcaecb76San Mehat SLOGE("Volume %s found no suitable devices for mounting :(\n", getLabel()); 35349e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat setState(Volume::State_Idle); 354a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 355eba65e9d438a05f1c5dfd0f8d31bc463a5d08eeeSan Mehat return -1; 356a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat} 357a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 3583bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehatint Volume::createBindMounts() { 3593bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat unsigned long flags; 3603bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat 3613bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat /* 36252c2ccb6d25b94b96685efd4803226727710fbaeSan Mehat * Rename old /android_secure -> /.android_secure 36352c2ccb6d25b94b96685efd4803226727710fbaeSan Mehat */ 36452c2ccb6d25b94b96685efd4803226727710fbaeSan Mehat if (!access("/mnt/secure/staging/android_secure", R_OK | X_OK) && 36552c2ccb6d25b94b96685efd4803226727710fbaeSan Mehat access(SEC_STG_SECIMGDIR, R_OK | X_OK)) { 36652c2ccb6d25b94b96685efd4803226727710fbaeSan Mehat if (rename("/mnt/secure/staging/android_secure", SEC_STG_SECIMGDIR)) { 36797ac40e4e6f3ed0bd5d6878d7d8d4a54fcaecb76San Mehat SLOGE("Failed to rename legacy asec dir (%s)", strerror(errno)); 36852c2ccb6d25b94b96685efd4803226727710fbaeSan Mehat } 36952c2ccb6d25b94b96685efd4803226727710fbaeSan Mehat } 37052c2ccb6d25b94b96685efd4803226727710fbaeSan Mehat 37152c2ccb6d25b94b96685efd4803226727710fbaeSan Mehat /* 3723bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat * Ensure that /android_secure exists and is a directory 3733bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat */ 3743bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat if (access(SEC_STG_SECIMGDIR, R_OK | X_OK)) { 3753bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat if (errno == ENOENT) { 3763bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat if (mkdir(SEC_STG_SECIMGDIR, 0777)) { 37797ac40e4e6f3ed0bd5d6878d7d8d4a54fcaecb76San Mehat SLOGE("Failed to create %s (%s)", SEC_STG_SECIMGDIR, strerror(errno)); 3783bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat return -1; 3793bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat } 3803bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat } else { 38197ac40e4e6f3ed0bd5d6878d7d8d4a54fcaecb76San Mehat SLOGE("Failed to access %s (%s)", SEC_STG_SECIMGDIR, strerror(errno)); 3823bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat return -1; 3833bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat } 3843bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat } else { 3853bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat struct stat sbuf; 386a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 3873bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat if (stat(SEC_STG_SECIMGDIR, &sbuf)) { 38897ac40e4e6f3ed0bd5d6878d7d8d4a54fcaecb76San Mehat SLOGE("Failed to stat %s (%s)", SEC_STG_SECIMGDIR, strerror(errno)); 3893bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat return -1; 3903bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat } 3913bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat if (!S_ISDIR(sbuf.st_mode)) { 39297ac40e4e6f3ed0bd5d6878d7d8d4a54fcaecb76San Mehat SLOGE("%s is not a directory", SEC_STG_SECIMGDIR); 3933bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat errno = ENOTDIR; 3943bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat return -1; 3953bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat } 3963bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat } 3973bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat 3983bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat /* 3993bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat * Bind mount /mnt/secure/staging/android_secure -> /mnt/secure/asec so we'll 4003bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat * have a root only accessable mountpoint for it. 4013bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat */ 4023bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat if (mount(SEC_STG_SECIMGDIR, SEC_ASECDIR, "", MS_BIND, NULL)) { 40397ac40e4e6f3ed0bd5d6878d7d8d4a54fcaecb76San Mehat SLOGE("Failed to bind mount points %s -> %s (%s)", 4043bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat SEC_STG_SECIMGDIR, SEC_ASECDIR, strerror(errno)); 405a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return -1; 406a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 407a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 4083bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat /* 4093bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat * Mount a read-only, zero-sized tmpfs on <mountpoint>/android_secure to 4103bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat * obscure the underlying directory from everybody - sneaky eh? ;) 4113bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat */ 4123bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat if (mount("tmpfs", SEC_STG_SECIMGDIR, "tmpfs", MS_RDONLY, "size=0,mode=000,uid=0,gid=0")) { 41397ac40e4e6f3ed0bd5d6878d7d8d4a54fcaecb76San Mehat SLOGE("Failed to obscure %s (%s)", SEC_STG_SECIMGDIR, strerror(errno)); 4143bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat umount("/mnt/asec_secure"); 4153bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat return -1; 4163bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat } 4173bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat 4183bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat return 0; 4193bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat} 4203bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat 4213bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehatint Volume::doMoveMount(const char *src, const char *dst, bool force) { 4223bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat unsigned int flags = MS_MOVE; 4233bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat int retries = 5; 4243bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat 4253bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat while(retries--) { 4263bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat if (!mount(src, dst, "", flags, NULL)) { 427d9a4e358614a0c5f60cc76c0636ee4bb02004a32San Mehat if (mDebug) { 42897ac40e4e6f3ed0bd5d6878d7d8d4a54fcaecb76San Mehat SLOGD("Moved mount %s -> %s sucessfully", src, dst); 429d9a4e358614a0c5f60cc76c0636ee4bb02004a32San Mehat } 4303bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat return 0; 4313bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat } else if (errno != EBUSY) { 43297ac40e4e6f3ed0bd5d6878d7d8d4a54fcaecb76San Mehat SLOGE("Failed to move mount %s -> %s (%s)", src, dst, strerror(errno)); 4333bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat return -1; 4343bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat } 4353bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat int action = 0; 4363bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat 4373bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat if (force) { 4383bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat if (retries == 1) { 4393bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat action = 2; // SIGKILL 4403bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat } else if (retries == 2) { 4413bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat action = 1; // SIGHUP 4423bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat } 443a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 44497ac40e4e6f3ed0bd5d6878d7d8d4a54fcaecb76San Mehat SLOGW("Failed to move %s -> %s (%s, retries %d, action %d)", 4453bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat src, dst, strerror(errno), retries, action); 4463bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat Process::killProcessesWithOpenFiles(src, action); 4473bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat usleep(1000*250); 4483bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat } 449a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 4503bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat errno = EBUSY; 45197ac40e4e6f3ed0bd5d6878d7d8d4a54fcaecb76San Mehat SLOGE("Giving up on move %s -> %s (%s)", src, dst, strerror(errno)); 4523bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat return -1; 4533bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat} 4543bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat 4553bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehatint Volume::doUnmount(const char *path, bool force) { 4563bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat int retries = 10; 4573bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat 458d9a4e358614a0c5f60cc76c0636ee4bb02004a32San Mehat if (mDebug) { 45997ac40e4e6f3ed0bd5d6878d7d8d4a54fcaecb76San Mehat SLOGD("Unmounting {%s}, force = %d", path, force); 460d9a4e358614a0c5f60cc76c0636ee4bb02004a32San Mehat } 461d9a4e358614a0c5f60cc76c0636ee4bb02004a32San Mehat 4623bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat while (retries--) { 4633bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat if (!umount(path) || errno == EINVAL || errno == ENOENT) { 46497ac40e4e6f3ed0bd5d6878d7d8d4a54fcaecb76San Mehat SLOGI("%s sucessfully unmounted", path); 4653bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat return 0; 4663bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat } 4678c940ef7dbd423cadc92982b44a65ed1014389e2San Mehat 4684ba8948dc16463053e21cda5744f519a555080d0San Mehat int action = 0; 4698c940ef7dbd423cadc92982b44a65ed1014389e2San Mehat 4704ba8948dc16463053e21cda5744f519a555080d0San Mehat if (force) { 4713bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat if (retries == 1) { 4724ba8948dc16463053e21cda5744f519a555080d0San Mehat action = 2; // SIGKILL 4733bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat } else if (retries == 2) { 4744ba8948dc16463053e21cda5744f519a555080d0San Mehat action = 1; // SIGHUP 4754ba8948dc16463053e21cda5744f519a555080d0San Mehat } 4764ba8948dc16463053e21cda5744f519a555080d0San Mehat } 4778c940ef7dbd423cadc92982b44a65ed1014389e2San Mehat 47897ac40e4e6f3ed0bd5d6878d7d8d4a54fcaecb76San Mehat SLOGW("Failed to unmount %s (%s, retries %d, action %d)", 4793bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat path, strerror(errno), retries, action); 4803bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat 4813bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat Process::killProcessesWithOpenFiles(path, action); 4824ba8948dc16463053e21cda5744f519a555080d0San Mehat usleep(1000*1000); 483a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 4843bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat errno = EBUSY; 48597ac40e4e6f3ed0bd5d6878d7d8d4a54fcaecb76San Mehat SLOGE("Giving up on unmount %s (%s)", path, strerror(errno)); 4863bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat return -1; 4873bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat} 488a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 4893bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehatint Volume::unmountVol(bool force) { 4903bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat int i, rc; 4913bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat 4923bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat if (getState() != Volume::State_Mounted) { 49397ac40e4e6f3ed0bd5d6878d7d8d4a54fcaecb76San Mehat SLOGE("Volume %s unmount request when not mounted", getLabel()); 4943bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat errno = EINVAL; 4953bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat return -1; 4963bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat } 4973bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat 4983bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat setState(Volume::State_Unmounting); 4993bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat usleep(1000 * 1000); // Give the framework some time to react 5003bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat 5013bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat /* 5023bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat * First move the mountpoint back to our internal staging point 5033bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat * so nobody else can muck with it while we work. 5043bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat */ 5053bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat if (doMoveMount(getMountpoint(), SEC_STGDIR, force)) { 50697ac40e4e6f3ed0bd5d6878d7d8d4a54fcaecb76San Mehat SLOGE("Failed to move mount %s => %s (%s)", getMountpoint(), SEC_STGDIR, strerror(errno)); 5073bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat setState(Volume::State_Mounted); 5083bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat return -1; 5093bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat } 5103bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat 511cb4dac8a5243f6673b0590019b5b28a01bd3e343San Mehat protectFromAutorunStupidity(); 512cb4dac8a5243f6673b0590019b5b28a01bd3e343San Mehat 5133bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat /* 5143bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat * Unmount the tmpfs which was obscuring the asec image directory 5153bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat * from non root users 5163bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat */ 5173bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat 5183bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat if (doUnmount(Volume::SEC_STG_SECIMGDIR, force)) { 51997ac40e4e6f3ed0bd5d6878d7d8d4a54fcaecb76San Mehat SLOGE("Failed to unmount tmpfs on %s (%s)", SEC_STG_SECIMGDIR, strerror(errno)); 5203bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat goto fail_republish; 5213bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat } 5223bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat 5233bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat /* 5243bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat * Remove the bindmount we were using to keep a reference to 5253bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat * the previously obscured directory. 5263bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat */ 5273bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat 5283bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat if (doUnmount(Volume::SEC_ASECDIR, force)) { 52997ac40e4e6f3ed0bd5d6878d7d8d4a54fcaecb76San Mehat SLOGE("Failed to remove bindmount on %s (%s)", SEC_ASECDIR, strerror(errno)); 5303bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat goto fail_remount_tmpfs; 5313bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat } 5323bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat 5333bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat /* 5343bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat * Finally, unmount the actual block device from the staging dir 5353bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat */ 5363bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat if (doUnmount(Volume::SEC_STGDIR, force)) { 53797ac40e4e6f3ed0bd5d6878d7d8d4a54fcaecb76San Mehat SLOGE("Failed to unmount %s (%s)", SEC_STGDIR, strerror(errno)); 5383bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat goto fail_recreate_bindmount; 5393bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat } 5403bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat 54197ac40e4e6f3ed0bd5d6878d7d8d4a54fcaecb76San Mehat SLOGI("%s unmounted sucessfully", getMountpoint()); 5423bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat 5433bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat setState(Volume::State_Idle); 5443bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat mCurrentlyMountedKdev = -1; 5453bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat return 0; 5463bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat 5473bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat /* 5483bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat * Failure handling - try to restore everything back the way it was 5493bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat */ 5503bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehatfail_recreate_bindmount: 5513bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat if (mount(SEC_STG_SECIMGDIR, SEC_ASECDIR, "", MS_BIND, NULL)) { 55297ac40e4e6f3ed0bd5d6878d7d8d4a54fcaecb76San Mehat SLOGE("Failed to restore bindmount after failure! - Storage will appear offline!"); 5533bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat goto out_nomedia; 5543bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat } 5553bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehatfail_remount_tmpfs: 5563bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat if (mount("tmpfs", SEC_STG_SECIMGDIR, "tmpfs", MS_RDONLY, "size=0,mode=0,uid=0,gid=0")) { 55797ac40e4e6f3ed0bd5d6878d7d8d4a54fcaecb76San Mehat SLOGE("Failed to restore tmpfs after failure! - Storage will appear offline!"); 5583bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat goto out_nomedia; 5593bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat } 5603bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehatfail_republish: 5613bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat if (doMoveMount(SEC_STGDIR, getMountpoint(), force)) { 56297ac40e4e6f3ed0bd5d6878d7d8d4a54fcaecb76San Mehat SLOGE("Failed to republish mount after failure! - Storage will appear offline!"); 5633bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat goto out_nomedia; 564a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 565a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 566a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat setState(Volume::State_Mounted); 567a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return -1; 5683bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat 5693bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehatout_nomedia: 5703bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat setState(Volume::State_NoMedia); 5713bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat return -1; 572a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat} 573a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 574a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehatint Volume::initializeMbr(const char *deviceNode) { 5752a5b8ce09b8836a8463ef9beaaff865c36ca5e6aSan Mehat struct disk_info dinfo; 576a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 5772a5b8ce09b8836a8463ef9beaaff865c36ca5e6aSan Mehat memset(&dinfo, 0, sizeof(dinfo)); 578a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 5792a5b8ce09b8836a8463ef9beaaff865c36ca5e6aSan Mehat if (!(dinfo.part_lst = (struct part_info *) malloc(MAX_NUM_PARTS * sizeof(struct part_info)))) { 58097ac40e4e6f3ed0bd5d6878d7d8d4a54fcaecb76San Mehat SLOGE("Failed to malloc prt_lst"); 581a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return -1; 582a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 583a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 5842a5b8ce09b8836a8463ef9beaaff865c36ca5e6aSan Mehat memset(dinfo.part_lst, 0, MAX_NUM_PARTS * sizeof(struct part_info)); 5852a5b8ce09b8836a8463ef9beaaff865c36ca5e6aSan Mehat dinfo.device = strdup(deviceNode); 5862a5b8ce09b8836a8463ef9beaaff865c36ca5e6aSan Mehat dinfo.scheme = PART_SCHEME_MBR; 5872a5b8ce09b8836a8463ef9beaaff865c36ca5e6aSan Mehat dinfo.sect_size = 512; 5882a5b8ce09b8836a8463ef9beaaff865c36ca5e6aSan Mehat dinfo.skip_lba = 2048; 5892a5b8ce09b8836a8463ef9beaaff865c36ca5e6aSan Mehat dinfo.num_lba = 0; 5902a5b8ce09b8836a8463ef9beaaff865c36ca5e6aSan Mehat dinfo.num_parts = 1; 591a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 5922a5b8ce09b8836a8463ef9beaaff865c36ca5e6aSan Mehat struct part_info *pinfo = &dinfo.part_lst[0]; 593a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 5942a5b8ce09b8836a8463ef9beaaff865c36ca5e6aSan Mehat pinfo->name = strdup("android_sdcard"); 5952a5b8ce09b8836a8463ef9beaaff865c36ca5e6aSan Mehat pinfo->flags |= PART_ACTIVE_FLAG; 5962a5b8ce09b8836a8463ef9beaaff865c36ca5e6aSan Mehat pinfo->type = PC_PART_TYPE_FAT32; 5972a5b8ce09b8836a8463ef9beaaff865c36ca5e6aSan Mehat pinfo->len_kb = -1; 598a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 5992a5b8ce09b8836a8463ef9beaaff865c36ca5e6aSan Mehat int rc = apply_disk_config(&dinfo, 0); 600a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 6012a5b8ce09b8836a8463ef9beaaff865c36ca5e6aSan Mehat if (rc) { 60297ac40e4e6f3ed0bd5d6878d7d8d4a54fcaecb76San Mehat SLOGE("Failed to apply disk configuration (%d)", rc); 6032a5b8ce09b8836a8463ef9beaaff865c36ca5e6aSan Mehat goto out; 604a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 6052a5b8ce09b8836a8463ef9beaaff865c36ca5e6aSan Mehat 6062a5b8ce09b8836a8463ef9beaaff865c36ca5e6aSan Mehat out: 6072a5b8ce09b8836a8463ef9beaaff865c36ca5e6aSan Mehat free(pinfo->name); 6082a5b8ce09b8836a8463ef9beaaff865c36ca5e6aSan Mehat free(dinfo.device); 6092a5b8ce09b8836a8463ef9beaaff865c36ca5e6aSan Mehat free(dinfo.part_lst); 6102a5b8ce09b8836a8463ef9beaaff865c36ca5e6aSan Mehat 6112a5b8ce09b8836a8463ef9beaaff865c36ca5e6aSan Mehat return rc; 612a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat} 613