Volume.cpp revision a4886f1f8ed72e24a302a91a0ab18bc54b6f585e
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 76fb7c4d5a8a1031cf0e493ff182dcf458e5fe8c77Kenny Root/* 77508c0e1605b795bbb51cb47d955b89f3df26ca94Kenny Root * Path to where OBBs are mounted 78fb7c4d5a8a1031cf0e493ff182dcf458e5fe8c77Kenny Root */ 79508c0e1605b795bbb51cb47d955b89f3df26ca94Kenny Rootconst char *Volume::LOOPDIR = "/mnt/obb"; 80fb7c4d5a8a1031cf0e493ff182dcf458e5fe8c77Kenny Root 81a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehatstatic const char *stateToStr(int state) { 82a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat if (state == Volume::State_Init) 83a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return "Initializing"; 84a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat else if (state == Volume::State_NoMedia) 85a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return "No-Media"; 86a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat else if (state == Volume::State_Idle) 87a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return "Idle-Unmounted"; 88a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat else if (state == Volume::State_Pending) 89a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return "Pending"; 90a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat else if (state == Volume::State_Mounted) 91a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return "Mounted"; 92a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat else if (state == Volume::State_Unmounting) 93a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return "Unmounting"; 94a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat else if (state == Volume::State_Checking) 95a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return "Checking"; 96a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat else if (state == Volume::State_Formatting) 97a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return "Formatting"; 98a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat else if (state == Volume::State_Shared) 99a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return "Shared-Unmounted"; 100a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat else if (state == Volume::State_SharedMnt) 101a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return "Shared-Mounted"; 102a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat else 103a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return "Unknown-Error"; 104a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat} 10549e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat 106a2677e4ad01f250b0765f04adf0acfa6627efc98San MehatVolume::Volume(VolumeManager *vm, const char *label, const char *mount_point) { 107a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat mVm = vm; 108d9a4e358614a0c5f60cc76c0636ee4bb02004a32San Mehat mDebug = false; 109f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat mLabel = strdup(label); 110f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat mMountpoint = strdup(mount_point); 111f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat mState = Volume::State_Init; 112a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat mCurrentlyMountedKdev = -1; 113a4886f1f8ed72e24a302a91a0ab18bc54b6f585eMike Lockwood mPartIdx = -1; 114f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat} 115f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat 116f1b736bc5605e92e917ab27f5abf3ba839be2270San MehatVolume::~Volume() { 117f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat free(mLabel); 118f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat free(mMountpoint); 119f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat} 120f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat 121cb4dac8a5243f6673b0590019b5b28a01bd3e343San Mehatvoid Volume::protectFromAutorunStupidity() { 122cb4dac8a5243f6673b0590019b5b28a01bd3e343San Mehat char filename[255]; 123cb4dac8a5243f6673b0590019b5b28a01bd3e343San Mehat 124cb4dac8a5243f6673b0590019b5b28a01bd3e343San Mehat snprintf(filename, sizeof(filename), "%s/autorun.inf", SEC_STGDIR); 125cb4dac8a5243f6673b0590019b5b28a01bd3e343San Mehat if (!access(filename, F_OK)) { 12697ac40e4e6f3ed0bd5d6878d7d8d4a54fcaecb76San Mehat SLOGW("Volume contains an autorun.inf! - removing"); 127cb4dac8a5243f6673b0590019b5b28a01bd3e343San Mehat /* 128cb4dac8a5243f6673b0590019b5b28a01bd3e343San Mehat * Ensure the filename is all lower-case so 129cb4dac8a5243f6673b0590019b5b28a01bd3e343San Mehat * the process killer can find the inode. 130cb4dac8a5243f6673b0590019b5b28a01bd3e343San Mehat * Probably being paranoid here but meh. 131cb4dac8a5243f6673b0590019b5b28a01bd3e343San Mehat */ 132cb4dac8a5243f6673b0590019b5b28a01bd3e343San Mehat rename(filename, filename); 133cb4dac8a5243f6673b0590019b5b28a01bd3e343San Mehat Process::killProcessesWithOpenFiles(filename, 2); 134cb4dac8a5243f6673b0590019b5b28a01bd3e343San Mehat if (unlink(filename)) { 13597ac40e4e6f3ed0bd5d6878d7d8d4a54fcaecb76San Mehat SLOGE("Failed to remove %s (%s)", filename, strerror(errno)); 136cb4dac8a5243f6673b0590019b5b28a01bd3e343San Mehat } 137cb4dac8a5243f6673b0590019b5b28a01bd3e343San Mehat } 138cb4dac8a5243f6673b0590019b5b28a01bd3e343San Mehat} 139cb4dac8a5243f6673b0590019b5b28a01bd3e343San Mehat 140d9a4e358614a0c5f60cc76c0636ee4bb02004a32San Mehatvoid Volume::setDebug(bool enable) { 141d9a4e358614a0c5f60cc76c0636ee4bb02004a32San Mehat mDebug = enable; 142d9a4e358614a0c5f60cc76c0636ee4bb02004a32San Mehat} 143d9a4e358614a0c5f60cc76c0636ee4bb02004a32San Mehat 144a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehatdev_t Volume::getDiskDevice() { 145a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return MKDEV(0, 0); 146a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat}; 147a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 1482dfe297ec47559dbe2297a72bea71cf515c03797Mike Lockwooddev_t Volume::getShareDevice() { 1492dfe297ec47559dbe2297a72bea71cf515c03797Mike Lockwood return getDiskDevice(); 1502dfe297ec47559dbe2297a72bea71cf515c03797Mike Lockwood} 1512dfe297ec47559dbe2297a72bea71cf515c03797Mike Lockwood 152a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehatvoid Volume::handleVolumeShared() { 153a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat} 154a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 155a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehatvoid Volume::handleVolumeUnshared() { 156a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat} 157a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 158fd7f5875129adfe2845f4f3fffb17db3a89eea25San Mehatint Volume::handleBlockEvent(NetlinkEvent *evt) { 159f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat errno = ENOSYS; 160f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat return -1; 161f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat} 162f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat 163f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehatvoid Volume::setState(int state) { 164a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat char msg[255]; 165a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat int oldState = mState; 166a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 167a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat if (oldState == state) { 16897ac40e4e6f3ed0bd5d6878d7d8d4a54fcaecb76San Mehat SLOGW("Duplicate state (%d)\n", state); 169a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return; 170a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 171a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 172f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat mState = state; 173a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 17497ac40e4e6f3ed0bd5d6878d7d8d4a54fcaecb76San Mehat SLOGD("Volume %s state changing %d (%s) -> %d (%s)", mLabel, 175a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat oldState, stateToStr(oldState), mState, stateToStr(mState)); 176a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat snprintf(msg, sizeof(msg), 177a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat "Volume %s %s state changed from %d (%s) to %d (%s)", getLabel(), 178a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat getMountpoint(), oldState, stateToStr(oldState), mState, 179a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat stateToStr(mState)); 180a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 181a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat mVm->getBroadcaster()->sendBroadcast(ResponseCode::VolumeStateChange, 182a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat msg, false); 183f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat} 18449e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat 185dd9b8e92aaf330b48ddb40a7380588ef92b53de6San Mehatint Volume::createDeviceNode(const char *path, int major, int minor) { 186dd9b8e92aaf330b48ddb40a7380588ef92b53de6San Mehat mode_t mode = 0660 | S_IFBLK; 187dd9b8e92aaf330b48ddb40a7380588ef92b53de6San Mehat dev_t dev = (major << 8) | minor; 188dd9b8e92aaf330b48ddb40a7380588ef92b53de6San Mehat if (mknod(path, mode, dev) < 0) { 189dd9b8e92aaf330b48ddb40a7380588ef92b53de6San Mehat if (errno != EEXIST) { 190dd9b8e92aaf330b48ddb40a7380588ef92b53de6San Mehat return -1; 191dd9b8e92aaf330b48ddb40a7380588ef92b53de6San Mehat } 192dd9b8e92aaf330b48ddb40a7380588ef92b53de6San Mehat } 193dd9b8e92aaf330b48ddb40a7380588ef92b53de6San Mehat return 0; 194dd9b8e92aaf330b48ddb40a7380588ef92b53de6San Mehat} 195dd9b8e92aaf330b48ddb40a7380588ef92b53de6San Mehat 196a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehatint Volume::formatVol() { 19749e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat 198a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat if (getState() == Volume::State_NoMedia) { 199a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat errno = ENODEV; 20049e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat return -1; 201a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } else if (getState() != Volume::State_Idle) { 202a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat errno = EBUSY; 203a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return -1; 204a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 205a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 206a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat if (isMountpointMounted(getMountpoint())) { 20797ac40e4e6f3ed0bd5d6878d7d8d4a54fcaecb76San Mehat SLOGW("Volume is idle but appears to be mounted - fixing"); 208a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat setState(Volume::State_Mounted); 209a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat // mCurrentlyMountedKdev = XXX 210a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat errno = EBUSY; 211a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return -1; 212a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 213a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 214a4886f1f8ed72e24a302a91a0ab18bc54b6f585eMike Lockwood bool formatEntireDevice = (mPartIdx == -1); 215a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat char devicePath[255]; 216a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat dev_t diskNode = getDiskDevice(); 217a4886f1f8ed72e24a302a91a0ab18bc54b6f585eMike Lockwood dev_t partNode = MKDEV(MAJOR(diskNode), (formatEntireDevice ? 1 : mPartIdx)); 218a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 2192a5b8ce09b8836a8463ef9beaaff865c36ca5e6aSan Mehat setState(Volume::State_Formatting); 220a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 221a4886f1f8ed72e24a302a91a0ab18bc54b6f585eMike Lockwood // Only initialize the MBR if we are formatting the entire device 222a4886f1f8ed72e24a302a91a0ab18bc54b6f585eMike Lockwood if (formatEntireDevice) { 223a4886f1f8ed72e24a302a91a0ab18bc54b6f585eMike Lockwood sprintf(devicePath, "/dev/block/vold/%d:%d", 224a4886f1f8ed72e24a302a91a0ab18bc54b6f585eMike Lockwood MAJOR(diskNode), MINOR(diskNode)); 225a4886f1f8ed72e24a302a91a0ab18bc54b6f585eMike Lockwood 226a4886f1f8ed72e24a302a91a0ab18bc54b6f585eMike Lockwood if (initializeMbr(devicePath)) { 227a4886f1f8ed72e24a302a91a0ab18bc54b6f585eMike Lockwood SLOGE("Failed to initialize MBR (%s)", strerror(errno)); 228a4886f1f8ed72e24a302a91a0ab18bc54b6f585eMike Lockwood goto err; 229a4886f1f8ed72e24a302a91a0ab18bc54b6f585eMike Lockwood } 230a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 231a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 232a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat sprintf(devicePath, "/dev/block/vold/%d:%d", 233a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat MAJOR(partNode), MINOR(partNode)); 234a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 235a4886f1f8ed72e24a302a91a0ab18bc54b6f585eMike Lockwood if (mDebug) { 236a4886f1f8ed72e24a302a91a0ab18bc54b6f585eMike Lockwood SLOGI("Formatting volume %s (%s)", getLabel(), devicePath); 237a4886f1f8ed72e24a302a91a0ab18bc54b6f585eMike Lockwood } 238a4886f1f8ed72e24a302a91a0ab18bc54b6f585eMike Lockwood 239fcf24fe62f98c5d44431aa575555569c2c7a29b0San Mehat if (Fat::format(devicePath, 0)) { 24097ac40e4e6f3ed0bd5d6878d7d8d4a54fcaecb76San Mehat SLOGE("Failed to format (%s)", strerror(errno)); 241a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat goto err; 242a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 243a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 2442a5b8ce09b8836a8463ef9beaaff865c36ca5e6aSan Mehat setState(Volume::State_Idle); 245a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return 0; 246a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehaterr: 247a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return -1; 248a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat} 249a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 250a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehatbool Volume::isMountpointMounted(const char *path) { 251a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat char device[256]; 252a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat char mount_path[256]; 253a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat char rest[256]; 254a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat FILE *fp; 255a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat char line[1024]; 256a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 257a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat if (!(fp = fopen("/proc/mounts", "r"))) { 25897ac40e4e6f3ed0bd5d6878d7d8d4a54fcaecb76San Mehat SLOGE("Error opening /proc/mounts (%s)", strerror(errno)); 259a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return false; 26049e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat } 26149e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat 262a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat while(fgets(line, sizeof(line), fp)) { 263a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat line[strlen(line)-1] = '\0'; 264a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat sscanf(line, "%255s %255s %255s\n", device, mount_path, rest); 265a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat if (!strcmp(mount_path, path)) { 266a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat fclose(fp); 267a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return true; 268a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 269dd9b8e92aaf330b48ddb40a7380588ef92b53de6San Mehat 270a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 271dd9b8e92aaf330b48ddb40a7380588ef92b53de6San Mehat 272a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat fclose(fp); 273a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return false; 274a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat} 275a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 276a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehatint Volume::mountVol() { 277a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat dev_t deviceNodes[4]; 278a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat int n, i, rc = 0; 279a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat char errmsg[255]; 280a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 281a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat if (getState() == Volume::State_NoMedia) { 282a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat snprintf(errmsg, sizeof(errmsg), 283a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat "Volume %s %s mount failed - no media", 284a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat getLabel(), getMountpoint()); 285a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat mVm->getBroadcaster()->sendBroadcast( 286a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat ResponseCode::VolumeMountFailedNoMedia, 287a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat errmsg, false); 288a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat errno = ENODEV; 289a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return -1; 290a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } else if (getState() != Volume::State_Idle) { 291a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat errno = EBUSY; 29249e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat return -1; 29349e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat } 29449e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat 295a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat if (isMountpointMounted(getMountpoint())) { 29697ac40e4e6f3ed0bd5d6878d7d8d4a54fcaecb76San Mehat SLOGW("Volume is idle but appears to be mounted - fixing"); 297a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat setState(Volume::State_Mounted); 298a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat // mCurrentlyMountedKdev = XXX 299a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return 0; 300a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 301a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 302a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat n = getDeviceNodes((dev_t *) &deviceNodes, 4); 303a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat if (!n) { 30497ac40e4e6f3ed0bd5d6878d7d8d4a54fcaecb76San Mehat SLOGE("Failed to get device nodes (%s)\n", strerror(errno)); 30549e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat return -1; 30649e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat } 30749e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat 308a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat for (i = 0; i < n; i++) { 309a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat char devicePath[255]; 310dd9b8e92aaf330b48ddb40a7380588ef92b53de6San Mehat 311a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat sprintf(devicePath, "/dev/block/vold/%d:%d", MAJOR(deviceNodes[i]), 312a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat MINOR(deviceNodes[i])); 313a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 31497ac40e4e6f3ed0bd5d6878d7d8d4a54fcaecb76San Mehat SLOGI("%s being considered for volume %s\n", devicePath, getLabel()); 315a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 316a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat errno = 0; 317bf04185c88161f13118b9975cdff7967d49a4fa0San Mehat setState(Volume::State_Checking); 318bf04185c88161f13118b9975cdff7967d49a4fa0San Mehat 3193bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat if (Fat::check(devicePath)) { 320a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat if (errno == ENODATA) { 32197ac40e4e6f3ed0bd5d6878d7d8d4a54fcaecb76San Mehat SLOGW("%s does not contain a FAT filesystem\n", devicePath); 322a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat continue; 323a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 324eba65e9d438a05f1c5dfd0f8d31bc463a5d08eeeSan Mehat errno = EIO; 325eba65e9d438a05f1c5dfd0f8d31bc463a5d08eeeSan Mehat /* Badness - abort the mount */ 32697ac40e4e6f3ed0bd5d6878d7d8d4a54fcaecb76San Mehat SLOGE("%s failed FS checks (%s)", devicePath, strerror(errno)); 327eba65e9d438a05f1c5dfd0f8d31bc463a5d08eeeSan Mehat setState(Volume::State_Idle); 328eba65e9d438a05f1c5dfd0f8d31bc463a5d08eeeSan Mehat return -1; 329a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 330a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 3313bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat /* 3323bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat * Mount the device on our internal staging mountpoint so we can 3333bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat * muck with it before exposing it to non priviledged users. 3343bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat */ 335a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat errno = 0; 336a3e06084564c86ff618c40f185f3676b8b629b94Kenny Root if (Fat::doMount(devicePath, "/mnt/secure/staging", false, false, false, 337a3e06084564c86ff618c40f185f3676b8b629b94Kenny Root 1000, 1015, 0702, true)) { 33897ac40e4e6f3ed0bd5d6878d7d8d4a54fcaecb76San Mehat SLOGE("%s failed to mount via VFAT (%s)\n", devicePath, strerror(errno)); 3393bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat continue; 340a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 341a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 34297ac40e4e6f3ed0bd5d6878d7d8d4a54fcaecb76San Mehat SLOGI("Device %s, target %s mounted @ /mnt/secure/staging", devicePath, getMountpoint()); 3433bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat 344cb4dac8a5243f6673b0590019b5b28a01bd3e343San Mehat protectFromAutorunStupidity(); 345cb4dac8a5243f6673b0590019b5b28a01bd3e343San Mehat 3463bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat if (createBindMounts()) { 34797ac40e4e6f3ed0bd5d6878d7d8d4a54fcaecb76San Mehat SLOGE("Failed to create bindmounts (%s)", strerror(errno)); 3483bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat umount("/mnt/secure/staging"); 3493bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat setState(Volume::State_Idle); 3503bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat return -1; 3513bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat } 3523bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat 3533bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat /* 3543bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat * Now that the bindmount trickery is done, atomically move the 3553bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat * whole subtree to expose it to non priviledged users. 3563bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat */ 3573bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat if (doMoveMount("/mnt/secure/staging", getMountpoint(), false)) { 35897ac40e4e6f3ed0bd5d6878d7d8d4a54fcaecb76San Mehat SLOGE("Failed to move mount (%s)", strerror(errno)); 3593bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat umount("/mnt/secure/staging"); 3603bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat setState(Volume::State_Idle); 3613bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat return -1; 3623bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat } 3633bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat setState(Volume::State_Mounted); 3643bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat mCurrentlyMountedKdev = deviceNodes[i]; 3653bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat return 0; 366a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 367a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 36897ac40e4e6f3ed0bd5d6878d7d8d4a54fcaecb76San Mehat SLOGE("Volume %s found no suitable devices for mounting :(\n", getLabel()); 36949e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat setState(Volume::State_Idle); 370a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 371eba65e9d438a05f1c5dfd0f8d31bc463a5d08eeeSan Mehat return -1; 372a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat} 373a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 3743bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehatint Volume::createBindMounts() { 3753bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat unsigned long flags; 3763bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat 3773bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat /* 37852c2ccb6d25b94b96685efd4803226727710fbaeSan Mehat * Rename old /android_secure -> /.android_secure 37952c2ccb6d25b94b96685efd4803226727710fbaeSan Mehat */ 38052c2ccb6d25b94b96685efd4803226727710fbaeSan Mehat if (!access("/mnt/secure/staging/android_secure", R_OK | X_OK) && 38152c2ccb6d25b94b96685efd4803226727710fbaeSan Mehat access(SEC_STG_SECIMGDIR, R_OK | X_OK)) { 38252c2ccb6d25b94b96685efd4803226727710fbaeSan Mehat if (rename("/mnt/secure/staging/android_secure", SEC_STG_SECIMGDIR)) { 38397ac40e4e6f3ed0bd5d6878d7d8d4a54fcaecb76San Mehat SLOGE("Failed to rename legacy asec dir (%s)", strerror(errno)); 38452c2ccb6d25b94b96685efd4803226727710fbaeSan Mehat } 38552c2ccb6d25b94b96685efd4803226727710fbaeSan Mehat } 38652c2ccb6d25b94b96685efd4803226727710fbaeSan Mehat 38752c2ccb6d25b94b96685efd4803226727710fbaeSan Mehat /* 3883bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat * Ensure that /android_secure exists and is a directory 3893bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat */ 3903bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat if (access(SEC_STG_SECIMGDIR, R_OK | X_OK)) { 3913bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat if (errno == ENOENT) { 3923bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat if (mkdir(SEC_STG_SECIMGDIR, 0777)) { 39397ac40e4e6f3ed0bd5d6878d7d8d4a54fcaecb76San Mehat SLOGE("Failed to create %s (%s)", SEC_STG_SECIMGDIR, strerror(errno)); 3943bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat return -1; 3953bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat } 3963bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat } else { 39797ac40e4e6f3ed0bd5d6878d7d8d4a54fcaecb76San Mehat SLOGE("Failed to access %s (%s)", SEC_STG_SECIMGDIR, strerror(errno)); 3983bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat return -1; 3993bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat } 4003bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat } else { 4013bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat struct stat sbuf; 402a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 4033bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat if (stat(SEC_STG_SECIMGDIR, &sbuf)) { 40497ac40e4e6f3ed0bd5d6878d7d8d4a54fcaecb76San Mehat SLOGE("Failed to stat %s (%s)", SEC_STG_SECIMGDIR, strerror(errno)); 4053bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat return -1; 4063bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat } 4073bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat if (!S_ISDIR(sbuf.st_mode)) { 40897ac40e4e6f3ed0bd5d6878d7d8d4a54fcaecb76San Mehat SLOGE("%s is not a directory", SEC_STG_SECIMGDIR); 4093bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat errno = ENOTDIR; 4103bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat return -1; 4113bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat } 4123bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat } 4133bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat 4143bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat /* 4153bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat * Bind mount /mnt/secure/staging/android_secure -> /mnt/secure/asec so we'll 4163bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat * have a root only accessable mountpoint for it. 4173bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat */ 4183bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat if (mount(SEC_STG_SECIMGDIR, SEC_ASECDIR, "", MS_BIND, NULL)) { 41997ac40e4e6f3ed0bd5d6878d7d8d4a54fcaecb76San Mehat SLOGE("Failed to bind mount points %s -> %s (%s)", 4203bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat SEC_STG_SECIMGDIR, SEC_ASECDIR, strerror(errno)); 421a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return -1; 422a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 423a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 4243bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat /* 4253bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat * Mount a read-only, zero-sized tmpfs on <mountpoint>/android_secure to 4263bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat * obscure the underlying directory from everybody - sneaky eh? ;) 4273bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat */ 4283bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat if (mount("tmpfs", SEC_STG_SECIMGDIR, "tmpfs", MS_RDONLY, "size=0,mode=000,uid=0,gid=0")) { 42997ac40e4e6f3ed0bd5d6878d7d8d4a54fcaecb76San Mehat SLOGE("Failed to obscure %s (%s)", SEC_STG_SECIMGDIR, strerror(errno)); 4303bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat umount("/mnt/asec_secure"); 4313bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat return -1; 4323bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat } 4333bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat 4343bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat return 0; 4353bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat} 4363bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat 4373bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehatint Volume::doMoveMount(const char *src, const char *dst, bool force) { 4383bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat unsigned int flags = MS_MOVE; 4393bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat int retries = 5; 4403bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat 4413bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat while(retries--) { 4423bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat if (!mount(src, dst, "", flags, NULL)) { 443d9a4e358614a0c5f60cc76c0636ee4bb02004a32San Mehat if (mDebug) { 44497ac40e4e6f3ed0bd5d6878d7d8d4a54fcaecb76San Mehat SLOGD("Moved mount %s -> %s sucessfully", src, dst); 445d9a4e358614a0c5f60cc76c0636ee4bb02004a32San Mehat } 4463bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat return 0; 4473bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat } else if (errno != EBUSY) { 44897ac40e4e6f3ed0bd5d6878d7d8d4a54fcaecb76San Mehat SLOGE("Failed to move mount %s -> %s (%s)", src, dst, strerror(errno)); 4493bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat return -1; 4503bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat } 4513bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat int action = 0; 4523bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat 4533bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat if (force) { 4543bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat if (retries == 1) { 4553bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat action = 2; // SIGKILL 4563bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat } else if (retries == 2) { 4573bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat action = 1; // SIGHUP 4583bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat } 459a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 46097ac40e4e6f3ed0bd5d6878d7d8d4a54fcaecb76San Mehat SLOGW("Failed to move %s -> %s (%s, retries %d, action %d)", 4613bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat src, dst, strerror(errno), retries, action); 4623bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat Process::killProcessesWithOpenFiles(src, action); 4633bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat usleep(1000*250); 4643bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat } 465a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 4663bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat errno = EBUSY; 46797ac40e4e6f3ed0bd5d6878d7d8d4a54fcaecb76San Mehat SLOGE("Giving up on move %s -> %s (%s)", src, dst, strerror(errno)); 4683bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat return -1; 4693bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat} 4703bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat 4713bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehatint Volume::doUnmount(const char *path, bool force) { 4723bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat int retries = 10; 4733bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat 474d9a4e358614a0c5f60cc76c0636ee4bb02004a32San Mehat if (mDebug) { 47597ac40e4e6f3ed0bd5d6878d7d8d4a54fcaecb76San Mehat SLOGD("Unmounting {%s}, force = %d", path, force); 476d9a4e358614a0c5f60cc76c0636ee4bb02004a32San Mehat } 477d9a4e358614a0c5f60cc76c0636ee4bb02004a32San Mehat 4783bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat while (retries--) { 4793bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat if (!umount(path) || errno == EINVAL || errno == ENOENT) { 48097ac40e4e6f3ed0bd5d6878d7d8d4a54fcaecb76San Mehat SLOGI("%s sucessfully unmounted", path); 4813bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat return 0; 4823bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat } 4838c940ef7dbd423cadc92982b44a65ed1014389e2San Mehat 4844ba8948dc16463053e21cda5744f519a555080d0San Mehat int action = 0; 4858c940ef7dbd423cadc92982b44a65ed1014389e2San Mehat 4864ba8948dc16463053e21cda5744f519a555080d0San Mehat if (force) { 4873bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat if (retries == 1) { 4884ba8948dc16463053e21cda5744f519a555080d0San Mehat action = 2; // SIGKILL 4893bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat } else if (retries == 2) { 4904ba8948dc16463053e21cda5744f519a555080d0San Mehat action = 1; // SIGHUP 4914ba8948dc16463053e21cda5744f519a555080d0San Mehat } 4924ba8948dc16463053e21cda5744f519a555080d0San Mehat } 4938c940ef7dbd423cadc92982b44a65ed1014389e2San Mehat 49497ac40e4e6f3ed0bd5d6878d7d8d4a54fcaecb76San Mehat SLOGW("Failed to unmount %s (%s, retries %d, action %d)", 4953bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat path, strerror(errno), retries, action); 4963bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat 4973bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat Process::killProcessesWithOpenFiles(path, action); 4984ba8948dc16463053e21cda5744f519a555080d0San Mehat usleep(1000*1000); 499a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 5003bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat errno = EBUSY; 50197ac40e4e6f3ed0bd5d6878d7d8d4a54fcaecb76San Mehat SLOGE("Giving up on unmount %s (%s)", path, strerror(errno)); 5023bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat return -1; 5033bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat} 504a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 5053bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehatint Volume::unmountVol(bool force) { 5063bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat int i, rc; 5073bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat 5083bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat if (getState() != Volume::State_Mounted) { 50997ac40e4e6f3ed0bd5d6878d7d8d4a54fcaecb76San Mehat SLOGE("Volume %s unmount request when not mounted", getLabel()); 5103bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat errno = EINVAL; 5113bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat return -1; 5123bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat } 5133bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat 5143bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat setState(Volume::State_Unmounting); 5153bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat usleep(1000 * 1000); // Give the framework some time to react 5163bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat 5173bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat /* 5183bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat * First move the mountpoint back to our internal staging point 5193bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat * so nobody else can muck with it while we work. 5203bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat */ 5213bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat if (doMoveMount(getMountpoint(), SEC_STGDIR, force)) { 52297ac40e4e6f3ed0bd5d6878d7d8d4a54fcaecb76San Mehat SLOGE("Failed to move mount %s => %s (%s)", getMountpoint(), SEC_STGDIR, strerror(errno)); 5233bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat setState(Volume::State_Mounted); 5243bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat return -1; 5253bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat } 5263bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat 527cb4dac8a5243f6673b0590019b5b28a01bd3e343San Mehat protectFromAutorunStupidity(); 528cb4dac8a5243f6673b0590019b5b28a01bd3e343San Mehat 5293bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat /* 5303bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat * Unmount the tmpfs which was obscuring the asec image directory 5313bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat * from non root users 5323bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat */ 5333bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat 5343bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat if (doUnmount(Volume::SEC_STG_SECIMGDIR, force)) { 53597ac40e4e6f3ed0bd5d6878d7d8d4a54fcaecb76San Mehat SLOGE("Failed to unmount tmpfs on %s (%s)", SEC_STG_SECIMGDIR, strerror(errno)); 5363bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat goto fail_republish; 5373bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat } 5383bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat 5393bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat /* 5403bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat * Remove the bindmount we were using to keep a reference to 5413bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat * the previously obscured directory. 5423bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat */ 5433bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat 5443bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat if (doUnmount(Volume::SEC_ASECDIR, force)) { 54597ac40e4e6f3ed0bd5d6878d7d8d4a54fcaecb76San Mehat SLOGE("Failed to remove bindmount on %s (%s)", SEC_ASECDIR, strerror(errno)); 5463bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat goto fail_remount_tmpfs; 5473bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat } 5483bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat 5493bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat /* 5503bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat * Finally, unmount the actual block device from the staging dir 5513bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat */ 5523bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat if (doUnmount(Volume::SEC_STGDIR, force)) { 55397ac40e4e6f3ed0bd5d6878d7d8d4a54fcaecb76San Mehat SLOGE("Failed to unmount %s (%s)", SEC_STGDIR, strerror(errno)); 5543bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat goto fail_recreate_bindmount; 5553bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat } 5563bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat 55797ac40e4e6f3ed0bd5d6878d7d8d4a54fcaecb76San Mehat SLOGI("%s unmounted sucessfully", getMountpoint()); 5583bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat 5593bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat setState(Volume::State_Idle); 5603bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat mCurrentlyMountedKdev = -1; 5613bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat return 0; 5623bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat 5633bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat /* 5643bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat * Failure handling - try to restore everything back the way it was 5653bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat */ 5663bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehatfail_recreate_bindmount: 5673bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat if (mount(SEC_STG_SECIMGDIR, SEC_ASECDIR, "", MS_BIND, NULL)) { 56897ac40e4e6f3ed0bd5d6878d7d8d4a54fcaecb76San Mehat SLOGE("Failed to restore bindmount after failure! - Storage will appear offline!"); 5693bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat goto out_nomedia; 5703bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat } 5713bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehatfail_remount_tmpfs: 5723bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat if (mount("tmpfs", SEC_STG_SECIMGDIR, "tmpfs", MS_RDONLY, "size=0,mode=0,uid=0,gid=0")) { 57397ac40e4e6f3ed0bd5d6878d7d8d4a54fcaecb76San Mehat SLOGE("Failed to restore tmpfs after failure! - Storage will appear offline!"); 5743bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat goto out_nomedia; 5753bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat } 5763bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehatfail_republish: 5773bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat if (doMoveMount(SEC_STGDIR, getMountpoint(), force)) { 57897ac40e4e6f3ed0bd5d6878d7d8d4a54fcaecb76San Mehat SLOGE("Failed to republish mount after failure! - Storage will appear offline!"); 5793bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat goto out_nomedia; 580a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 581a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 582a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat setState(Volume::State_Mounted); 583a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return -1; 5843bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat 5853bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehatout_nomedia: 5863bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat setState(Volume::State_NoMedia); 5873bb6020e461e8872e8df0775cba6eb32e06b93ecSan Mehat return -1; 588a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat} 589a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehatint Volume::initializeMbr(const char *deviceNode) { 5902a5b8ce09b8836a8463ef9beaaff865c36ca5e6aSan Mehat struct disk_info dinfo; 591a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 5922a5b8ce09b8836a8463ef9beaaff865c36ca5e6aSan Mehat memset(&dinfo, 0, sizeof(dinfo)); 593a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 5942a5b8ce09b8836a8463ef9beaaff865c36ca5e6aSan Mehat if (!(dinfo.part_lst = (struct part_info *) malloc(MAX_NUM_PARTS * sizeof(struct part_info)))) { 59597ac40e4e6f3ed0bd5d6878d7d8d4a54fcaecb76San Mehat SLOGE("Failed to malloc prt_lst"); 596a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return -1; 597a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 598a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 5992a5b8ce09b8836a8463ef9beaaff865c36ca5e6aSan Mehat memset(dinfo.part_lst, 0, MAX_NUM_PARTS * sizeof(struct part_info)); 6002a5b8ce09b8836a8463ef9beaaff865c36ca5e6aSan Mehat dinfo.device = strdup(deviceNode); 6012a5b8ce09b8836a8463ef9beaaff865c36ca5e6aSan Mehat dinfo.scheme = PART_SCHEME_MBR; 6022a5b8ce09b8836a8463ef9beaaff865c36ca5e6aSan Mehat dinfo.sect_size = 512; 6032a5b8ce09b8836a8463ef9beaaff865c36ca5e6aSan Mehat dinfo.skip_lba = 2048; 6042a5b8ce09b8836a8463ef9beaaff865c36ca5e6aSan Mehat dinfo.num_lba = 0; 6052a5b8ce09b8836a8463ef9beaaff865c36ca5e6aSan Mehat dinfo.num_parts = 1; 606a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 6072a5b8ce09b8836a8463ef9beaaff865c36ca5e6aSan Mehat struct part_info *pinfo = &dinfo.part_lst[0]; 608a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 6092a5b8ce09b8836a8463ef9beaaff865c36ca5e6aSan Mehat pinfo->name = strdup("android_sdcard"); 6102a5b8ce09b8836a8463ef9beaaff865c36ca5e6aSan Mehat pinfo->flags |= PART_ACTIVE_FLAG; 6112a5b8ce09b8836a8463ef9beaaff865c36ca5e6aSan Mehat pinfo->type = PC_PART_TYPE_FAT32; 6122a5b8ce09b8836a8463ef9beaaff865c36ca5e6aSan Mehat pinfo->len_kb = -1; 613a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 6142a5b8ce09b8836a8463ef9beaaff865c36ca5e6aSan Mehat int rc = apply_disk_config(&dinfo, 0); 615a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 6162a5b8ce09b8836a8463ef9beaaff865c36ca5e6aSan Mehat if (rc) { 61797ac40e4e6f3ed0bd5d6878d7d8d4a54fcaecb76San Mehat SLOGE("Failed to apply disk configuration (%d)", rc); 6182a5b8ce09b8836a8463ef9beaaff865c36ca5e6aSan Mehat goto out; 619a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 6202a5b8ce09b8836a8463ef9beaaff865c36ca5e6aSan Mehat 6212a5b8ce09b8836a8463ef9beaaff865c36ca5e6aSan Mehat out: 6222a5b8ce09b8836a8463ef9beaaff865c36ca5e6aSan Mehat free(pinfo->name); 6232a5b8ce09b8836a8463ef9beaaff865c36ca5e6aSan Mehat free(dinfo.device); 6242a5b8ce09b8836a8463ef9beaaff865c36ca5e6aSan Mehat free(dinfo.part_lst); 6252a5b8ce09b8836a8463ef9beaaff865c36ca5e6aSan Mehat 6262a5b8ce09b8836a8463ef9beaaff865c36ca5e6aSan Mehat return rc; 627a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat} 628