VolumeManager.cpp revision 0cde53ce7b44ce189d0bc6fa81c0036e096deb51
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 17f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat#include <stdio.h> 18fd7f5875129adfe2845f4f3fffb17db3a89eea25San Mehat#include <stdlib.h> 19fd7f5875129adfe2845f4f3fffb17db3a89eea25San Mehat#include <string.h> 20f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat#include <errno.h> 21a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat#include <fcntl.h> 22a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat#include <linux/kdev_t.h> 23f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat 24f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat#define LOG_TAG "Vold" 25f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat 26f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat#include <cutils/log.h> 27f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat 28fd7f5875129adfe2845f4f3fffb17db3a89eea25San Mehat#include <sysutils/NetlinkEvent.h> 29fd7f5875129adfe2845f4f3fffb17db3a89eea25San Mehat 30f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat#include "VolumeManager.h" 31ae10b91044bf76b40b77d81c169e48e0bbdf6d75San Mehat#include "DirectVolume.h" 32a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat#include "ResponseCode.h" 33f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat 34f1b736bc5605e92e917ab27f5abf3ba839be2270San MehatVolumeManager *VolumeManager::sInstance = NULL; 35f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat 36f1b736bc5605e92e917ab27f5abf3ba839be2270San MehatVolumeManager *VolumeManager::Instance() { 37f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat if (!sInstance) 38f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat sInstance = new VolumeManager(); 39f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat return sInstance; 40f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat} 41f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat 42f1b736bc5605e92e917ab27f5abf3ba839be2270San MehatVolumeManager::VolumeManager() { 43f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat mBlockDevices = new BlockDeviceCollection(); 44f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat mVolumes = new VolumeCollection(); 45f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat mBroadcaster = NULL; 46a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat mUsbMassStorageConnected = false; 47f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat} 48f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat 49f1b736bc5605e92e917ab27f5abf3ba839be2270San MehatVolumeManager::~VolumeManager() { 50f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat delete mBlockDevices; 51f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat} 52f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat 53f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehatint VolumeManager::start() { 54f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat return 0; 55f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat} 56f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat 57f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehatint VolumeManager::stop() { 58f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat return 0; 59f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat} 60f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat 61f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehatint VolumeManager::addVolume(Volume *v) { 62f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat mVolumes->push_back(v); 63f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat return 0; 64f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat} 65f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat 66a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehatvoid VolumeManager::notifyUmsConnected(bool connected) { 67a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat char msg[255]; 68a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 69a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat if (connected) { 70a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat mUsbMassStorageConnected = true; 71a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } else { 72a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat mUsbMassStorageConnected = false; 73a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 74a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat snprintf(msg, sizeof(msg), "Share method ums now %s", 75a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat (connected ? "available" : "unavailable")); 76a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 77a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat getBroadcaster()->sendBroadcast(ResponseCode::ShareAvailabilityChange, 78a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat msg, false); 79a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat} 80a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 81a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehatvoid VolumeManager::handleSwitchEvent(NetlinkEvent *evt) { 820cde53ce7b44ce189d0bc6fa81c0036e096deb51San Mehat const char *devpath = evt->findParam("DEVPATH"); 83a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat const char *name = evt->findParam("SWITCH_NAME"); 84a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat const char *state = evt->findParam("SWITCH_STATE"); 85a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 860cde53ce7b44ce189d0bc6fa81c0036e096deb51San Mehat if (!name || !state) { 870cde53ce7b44ce189d0bc6fa81c0036e096deb51San Mehat LOGW("Switch %s event missing name/state info", devpath); 880cde53ce7b44ce189d0bc6fa81c0036e096deb51San Mehat return; 890cde53ce7b44ce189d0bc6fa81c0036e096deb51San Mehat } 900cde53ce7b44ce189d0bc6fa81c0036e096deb51San Mehat 91a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat if (!strcmp(name, "usb_mass_storage")) { 92a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 93a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat if (!strcmp(state, "online")) { 94a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat notifyUmsConnected(true); 95a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } else { 96a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat notifyUmsConnected(false); 97a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 98a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } else { 99a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat LOGW("Ignoring unknown switch '%s'", name); 100a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 101a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat} 102a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 103fd7f5875129adfe2845f4f3fffb17db3a89eea25San Mehatvoid VolumeManager::handleBlockEvent(NetlinkEvent *evt) { 104fd7f5875129adfe2845f4f3fffb17db3a89eea25San Mehat const char *devpath = evt->findParam("DEVPATH"); 105f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat 106fd7f5875129adfe2845f4f3fffb17db3a89eea25San Mehat /* Lookup a volume to handle this device */ 107f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat VolumeCollection::iterator it; 108f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat bool hit = false; 109f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat for (it = mVolumes->begin(); it != mVolumes->end(); ++it) { 110fd7f5875129adfe2845f4f3fffb17db3a89eea25San Mehat if (!(*it)->handleBlockEvent(evt)) { 111a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat#ifdef NETLINK_DEBUG 112a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat LOGD("Device '%s' event handled by volume %s\n", devpath, (*it)->getLabel()); 113a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat#endif 114f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat hit = true; 115f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat break; 116f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat } 117f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat } 118f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat 119f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat if (!hit) { 120a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat#ifdef NETLINK_DEBUG 121fd7f5875129adfe2845f4f3fffb17db3a89eea25San Mehat LOGW("No volumes handled block event for '%s'", devpath); 122a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat#endif 123f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat } 124f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat} 125f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat 126f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehatint VolumeManager::listVolumes(SocketClient *cli) { 127f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat VolumeCollection::iterator i; 128f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat 129f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat for (i = mVolumes->begin(); i != mVolumes->end(); ++i) { 130f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat char *buffer; 131f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat asprintf(&buffer, "%s %s %d", 132f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat (*i)->getLabel(), (*i)->getMountpoint(), 133f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat (*i)->getState()); 134a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat cli->sendMsg(ResponseCode::VolumeListResult, buffer, false); 135f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat free(buffer); 136f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat } 137a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat cli->sendMsg(ResponseCode::CommandOkay, "Volumes listed.", false); 138f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat return 0; 139f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat} 14049e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat 141a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehatint VolumeManager::formatVolume(const char *label) { 142a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat Volume *v = lookupVolume(label); 143a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 144a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat if (!v) { 145a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat errno = ENOENT; 146a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return -1; 147a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 148a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 149a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return v->formatVol(); 150a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat} 151a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 15249e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehatint VolumeManager::mountVolume(const char *label) { 15349e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat Volume *v = lookupVolume(label); 15449e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat 15549e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat if (!v) { 15649e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat errno = ENOENT; 15749e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat return -1; 15849e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat } 15949e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat 160a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return v->mountVol(); 161a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat} 162a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 163a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehatint VolumeManager::shareAvailable(const char *method, bool *avail) { 164a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 165a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat if (strcmp(method, "ums")) { 166a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat errno = ENOSYS; 167a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return -1; 168a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 169a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 170a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat if (mUsbMassStorageConnected) 171a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat *avail = true; 172a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat else 173a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat *avail = false; 174a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return 0; 175a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat} 176a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 177a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehatint VolumeManager::simulate(const char *cmd, const char *arg) { 178a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 179a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat if (!strcmp(cmd, "ums")) { 180a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat if (!strcmp(arg, "connect")) { 181a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat notifyUmsConnected(true); 182a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } else if (!strcmp(arg, "disconnect")) { 183a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat notifyUmsConnected(false); 184a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } else { 185a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat errno = EINVAL; 186a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return -1; 187a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 188a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } else { 189a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat errno = EINVAL; 190a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return -1; 191a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 192a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return 0; 193a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat} 194a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 195a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehatint VolumeManager::shareVolume(const char *label, const char *method) { 196a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat Volume *v = lookupVolume(label); 197a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 198a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat if (!v) { 199a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat errno = ENOENT; 200a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return -1; 201a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 202a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 203a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat /* 204a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat * Eventually, we'll want to support additional share back-ends, 205a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat * some of which may work while the media is mounted. For now, 206a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat * we just support UMS 207a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat */ 208a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat if (strcmp(method, "ums")) { 209a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat errno = ENOSYS; 210a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return -1; 211a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 212a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 213a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat if (v->getState() == Volume::State_NoMedia) { 214a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat errno = ENODEV; 215a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return -1; 216a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 217a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 21849e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat if (v->getState() != Volume::State_Idle) { 219a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat // You need to unmount manually befoe sharing 22049e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat errno = EBUSY; 22149e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat return -1; 22249e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat } 22349e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat 224a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat dev_t d = v->getDiskDevice(); 225a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat if ((MAJOR(d) == 0) && (MINOR(d) == 0)) { 226a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat // This volume does not support raw disk access 227a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat errno = EINVAL; 228a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return -1; 229a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 230a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 231a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat int fd; 232a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat char nodepath[255]; 233a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat snprintf(nodepath, 234a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat sizeof(nodepath), "/dev/block/vold/%d:%d", 235a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat MAJOR(d), MINOR(d)); 236a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 2370cde53ce7b44ce189d0bc6fa81c0036e096deb51San Mehat if ((fd = open("/sys/devices/platform/usb_mass_storage/lun0/file", 2380cde53ce7b44ce189d0bc6fa81c0036e096deb51San Mehat O_WRONLY)) < 0) { 239a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat LOGE("Unable to open ums lunfile (%s)", strerror(errno)); 240a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return -1; 241a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 242a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 243a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat if (write(fd, nodepath, strlen(nodepath)) < 0) { 244a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat LOGE("Unable to write to ums lunfile (%s)", strerror(errno)); 245a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat close(fd); 246a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return -1; 247a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 248a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 249a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat close(fd); 250a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat v->handleVolumeShared(); 251a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return 0; 252a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat} 253a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 254a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehatint VolumeManager::unshareVolume(const char *label, const char *method) { 255a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat Volume *v = lookupVolume(label); 256a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 257a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat if (!v) { 258a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat errno = ENOENT; 259a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return -1; 260a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 261a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 262a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat if (strcmp(method, "ums")) { 263a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat errno = ENOSYS; 264a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return -1; 265a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 266a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 267a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat if (v->getState() != Volume::State_Shared) { 268a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat errno = EINVAL; 269a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return -1; 270a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 271a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 272a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat dev_t d = v->getDiskDevice(); 273a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 274a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat int fd; 275a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat char nodepath[255]; 276a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat snprintf(nodepath, 277a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat sizeof(nodepath), "/dev/block/vold/%d:%d", 278a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat MAJOR(d), MINOR(d)); 279a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 2800cde53ce7b44ce189d0bc6fa81c0036e096deb51San Mehat if ((fd = open("/sys/devices/platform/usb_mass_storage/lun0/file", O_WRONLY)) < 0) { 281a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat LOGE("Unable to open ums lunfile (%s)", strerror(errno)); 282a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return -1; 283a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 284a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 285a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat char ch = 0; 286a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat if (write(fd, &ch, 1) < 0) { 287a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat LOGE("Unable to write to ums lunfile (%s)", strerror(errno)); 288a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat close(fd); 289a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return -1; 290a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 291a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 292a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat close(fd); 293a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat v->handleVolumeUnshared(); 294a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return 0; 29549e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat} 29649e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat 29749e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehatint VolumeManager::unmountVolume(const char *label) { 29849e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat Volume *v = lookupVolume(label); 29949e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat 30049e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat if (!v) { 30149e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat errno = ENOENT; 30249e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat return -1; 30349e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat } 30449e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat 305a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat if (v->getState() == Volume::State_NoMedia) { 306a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat errno = ENODEV; 307a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return -1; 308a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 309a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 31049e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat if (v->getState() != Volume::State_Mounted) { 311a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat LOGW("Attempt to unmount volume which isn't mounted (%d)\n", 312a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat v->getState()); 31349e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat errno = EBUSY; 31449e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat return -1; 31549e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat } 31649e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat 317a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return v->unmountVol(); 31849e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat} 31949e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat 320a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat/* 321a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat * Looks up a volume by it's label or mount-point 322a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat */ 32349e2bce5b74129c26a35e25d4693cbfe98c4688eSan MehatVolume *VolumeManager::lookupVolume(const char *label) { 32449e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat VolumeCollection::iterator i; 32549e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat 32649e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat for (i = mVolumes->begin(); i != mVolumes->end(); ++i) { 327a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat if (label[0] == '/') { 328a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat if (!strcmp(label, (*i)->getMountpoint())) 329a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return (*i); 330a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } else { 331a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat if (!strcmp(label, (*i)->getLabel())) 332a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return (*i); 333a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 33449e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat } 33549e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat return NULL; 33649e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat} 337