VolumeManager.cpp revision a2677e4ad01f250b0765f04adf0acfa6627efc98
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) { 82a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat const char *name = evt->findParam("SWITCH_NAME"); 83a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat const char *state = evt->findParam("SWITCH_STATE"); 84a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 85a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat if (!strcmp(name, "usb_mass_storage")) { 86a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 87a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat if (!strcmp(state, "online")) { 88a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat notifyUmsConnected(true); 89a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } else { 90a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat notifyUmsConnected(false); 91a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 92a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } else { 93a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat LOGW("Ignoring unknown switch '%s'", name); 94a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 95a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat} 96a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 97fd7f5875129adfe2845f4f3fffb17db3a89eea25San Mehatvoid VolumeManager::handleBlockEvent(NetlinkEvent *evt) { 98fd7f5875129adfe2845f4f3fffb17db3a89eea25San Mehat const char *devpath = evt->findParam("DEVPATH"); 99f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat 100fd7f5875129adfe2845f4f3fffb17db3a89eea25San Mehat /* Lookup a volume to handle this device */ 101f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat VolumeCollection::iterator it; 102f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat bool hit = false; 103f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat for (it = mVolumes->begin(); it != mVolumes->end(); ++it) { 104fd7f5875129adfe2845f4f3fffb17db3a89eea25San Mehat if (!(*it)->handleBlockEvent(evt)) { 105a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat#ifdef NETLINK_DEBUG 106a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat LOGD("Device '%s' event handled by volume %s\n", devpath, (*it)->getLabel()); 107a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat#endif 108f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat hit = true; 109f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat break; 110f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat } 111f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat } 112f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat 113f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat if (!hit) { 114a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat#ifdef NETLINK_DEBUG 115fd7f5875129adfe2845f4f3fffb17db3a89eea25San Mehat LOGW("No volumes handled block event for '%s'", devpath); 116a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat#endif 117f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat } 118f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat} 119f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat 120f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehatint VolumeManager::listVolumes(SocketClient *cli) { 121f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat VolumeCollection::iterator i; 122f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat 123f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat for (i = mVolumes->begin(); i != mVolumes->end(); ++i) { 124f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat char *buffer; 125f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat asprintf(&buffer, "%s %s %d", 126f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat (*i)->getLabel(), (*i)->getMountpoint(), 127f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat (*i)->getState()); 128a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat cli->sendMsg(ResponseCode::VolumeListResult, buffer, false); 129f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat free(buffer); 130f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat } 131a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat cli->sendMsg(ResponseCode::CommandOkay, "Volumes listed.", false); 132f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat return 0; 133f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat} 13449e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat 135a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehatint VolumeManager::formatVolume(const char *label) { 136a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat Volume *v = lookupVolume(label); 137a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 138a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat if (!v) { 139a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat errno = ENOENT; 140a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return -1; 141a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 142a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 143a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return v->formatVol(); 144a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat} 145a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 14649e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehatint VolumeManager::mountVolume(const char *label) { 14749e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat Volume *v = lookupVolume(label); 14849e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat 14949e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat if (!v) { 15049e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat errno = ENOENT; 15149e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat return -1; 15249e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat } 15349e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat 154a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return v->mountVol(); 155a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat} 156a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 157a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehatint VolumeManager::shareAvailable(const char *method, bool *avail) { 158a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 159a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat if (strcmp(method, "ums")) { 160a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat errno = ENOSYS; 161a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return -1; 162a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 163a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 164a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat if (mUsbMassStorageConnected) 165a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat *avail = true; 166a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat else 167a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat *avail = false; 168a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return 0; 169a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat} 170a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 171a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehatint VolumeManager::simulate(const char *cmd, const char *arg) { 172a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 173a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat if (!strcmp(cmd, "ums")) { 174a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat if (!strcmp(arg, "connect")) { 175a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat notifyUmsConnected(true); 176a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } else if (!strcmp(arg, "disconnect")) { 177a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat notifyUmsConnected(false); 178a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } else { 179a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat errno = EINVAL; 180a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return -1; 181a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 182a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } else { 183a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat errno = EINVAL; 184a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return -1; 185a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 186a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return 0; 187a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat} 188a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 189a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehatint VolumeManager::shareVolume(const char *label, const char *method) { 190a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat Volume *v = lookupVolume(label); 191a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 192a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat if (!v) { 193a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat errno = ENOENT; 194a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return -1; 195a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 196a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 197a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat /* 198a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat * Eventually, we'll want to support additional share back-ends, 199a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat * some of which may work while the media is mounted. For now, 200a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat * we just support UMS 201a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat */ 202a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat if (strcmp(method, "ums")) { 203a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat errno = ENOSYS; 204a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return -1; 205a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 206a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 207a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat if (v->getState() == Volume::State_NoMedia) { 208a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat errno = ENODEV; 209a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return -1; 210a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 211a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 21249e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat if (v->getState() != Volume::State_Idle) { 213a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat // You need to unmount manually befoe sharing 21449e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat errno = EBUSY; 21549e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat return -1; 21649e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat } 21749e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat 218a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat dev_t d = v->getDiskDevice(); 219a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat if ((MAJOR(d) == 0) && (MINOR(d) == 0)) { 220a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat // This volume does not support raw disk access 221a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat errno = EINVAL; 222a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return -1; 223a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 224a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 225a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat int fd; 226a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat char nodepath[255]; 227a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat snprintf(nodepath, 228a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat sizeof(nodepath), "/dev/block/vold/%d:%d", 229a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat MAJOR(d), MINOR(d)); 230a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 231a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat if ((fd = open("/sys/devices/platform/usb_mass_storage/lun0", O_WRONLY)) < 0) { 232a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat LOGE("Unable to open ums lunfile (%s)", strerror(errno)); 233a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return -1; 234a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 235a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 236a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat if (write(fd, nodepath, strlen(nodepath)) < 0) { 237a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat LOGE("Unable to write to ums lunfile (%s)", strerror(errno)); 238a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat close(fd); 239a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return -1; 240a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 241a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 242a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat close(fd); 243a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat v->handleVolumeShared(); 244a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return 0; 245a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat} 246a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 247a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehatint VolumeManager::unshareVolume(const char *label, const char *method) { 248a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat Volume *v = lookupVolume(label); 249a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 250a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat if (!v) { 251a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat errno = ENOENT; 252a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return -1; 253a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 254a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 255a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat if (strcmp(method, "ums")) { 256a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat errno = ENOSYS; 257a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return -1; 258a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 259a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 260a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat if (v->getState() != Volume::State_Shared) { 261a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat errno = EINVAL; 262a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return -1; 263a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 264a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 265a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat dev_t d = v->getDiskDevice(); 266a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 267a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat int fd; 268a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat char nodepath[255]; 269a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat snprintf(nodepath, 270a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat sizeof(nodepath), "/dev/block/vold/%d:%d", 271a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat MAJOR(d), MINOR(d)); 272a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 273a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat if ((fd = open("/sys/devices/platform/usb_mass_storage/lun0", O_WRONLY)) < 0) { 274a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat LOGE("Unable to open ums lunfile (%s)", strerror(errno)); 275a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return -1; 276a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 277a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 278a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat char ch = 0; 279a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat if (write(fd, &ch, 1) < 0) { 280a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat LOGE("Unable to write to ums lunfile (%s)", strerror(errno)); 281a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat close(fd); 282a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return -1; 283a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 284a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 285a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat close(fd); 286a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat v->handleVolumeUnshared(); 287a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return 0; 28849e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat} 28949e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat 29049e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehatint VolumeManager::unmountVolume(const char *label) { 29149e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat Volume *v = lookupVolume(label); 29249e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat 29349e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat if (!v) { 29449e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat errno = ENOENT; 29549e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat return -1; 29649e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat } 29749e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat 298a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat if (v->getState() == Volume::State_NoMedia) { 299a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat errno = ENODEV; 300a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return -1; 301a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 302a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 30349e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat if (v->getState() != Volume::State_Mounted) { 304a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat LOGW("Attempt to unmount volume which isn't mounted (%d)\n", 305a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat v->getState()); 30649e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat errno = EBUSY; 30749e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat return -1; 30849e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat } 30949e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat 310a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return v->unmountVol(); 31149e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat} 31249e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat 313a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat/* 314a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat * Looks up a volume by it's label or mount-point 315a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat */ 31649e2bce5b74129c26a35e25d4693cbfe98c4688eSan MehatVolume *VolumeManager::lookupVolume(const char *label) { 31749e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat VolumeCollection::iterator i; 31849e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat 31949e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat for (i = mVolumes->begin(); i != mVolumes->end(); ++i) { 320a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat if (label[0] == '/') { 321a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat if (!strcmp(label, (*i)->getMountpoint())) 322a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return (*i); 323a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } else { 324a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat if (!strcmp(label, (*i)->getLabel())) 325a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return (*i); 326a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 32749e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat } 32849e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat return NULL; 32949e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat} 330