DirectVolume.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> 19f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat#include <string.h> 20fd7f5875129adfe2845f4f3fffb17db3a89eea25San Mehat#include <errno.h> 21f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat 22a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat#include <linux/kdev_t.h> 23a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 24a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat#define LOG_TAG "DirectVolume" 25f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat 26f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat#include <cutils/log.h> 27fd7f5875129adfe2845f4f3fffb17db3a89eea25San Mehat#include <sysutils/NetlinkEvent.h> 28f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat 29ae10b91044bf76b40b77d81c169e48e0bbdf6d75San Mehat#include "DirectVolume.h" 30a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat#include "VolumeManager.h" 31a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat#include "ResponseCode.h" 32a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 33a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat// #define PARTITION_DEBUG 34f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat 35a2677e4ad01f250b0765f04adf0acfa6627efc98San MehatDirectVolume::DirectVolume(VolumeManager *vm, const char *label, 36a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat const char *mount_point, int partIdx) : 37a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat Volume(vm, label, mount_point) { 38f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat mPartIdx = partIdx; 39a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 40f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat mPaths = new PathCollection(); 41dd9b8e92aaf330b48ddb40a7380588ef92b53de6San Mehat for (int i = 0; i < MAX_PARTITIONS; i++) 42dd9b8e92aaf330b48ddb40a7380588ef92b53de6San Mehat mPartMinors[i] = -1; 43a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat mPendingPartMap = 0; 44a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat mDiskMajor = -1; 45a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat mDiskMinor = -1; 46a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat mDiskNumParts = 0; 47a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 48a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat setState(Volume::State_NoMedia); 49f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat} 50f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat 51ae10b91044bf76b40b77d81c169e48e0bbdf6d75San MehatDirectVolume::~DirectVolume() { 52f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat PathCollection::iterator it; 53f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat 54f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat for (it = mPaths->begin(); it != mPaths->end(); ++it) 55f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat free(*it); 56f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat delete mPaths; 57f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat} 58f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat 59ae10b91044bf76b40b77d81c169e48e0bbdf6d75San Mehatint DirectVolume::addPath(const char *path) { 60f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat mPaths->push_back(strdup(path)); 61f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat return 0; 62f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat} 63f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat 64a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehatdev_t DirectVolume::getDiskDevice() { 65a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return MKDEV(mDiskMajor, mDiskMinor); 66a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat} 67a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 68a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehatvoid DirectVolume::handleVolumeShared() { 69a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat setState(Volume::State_Shared); 70a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat} 71a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 72a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehatvoid DirectVolume::handleVolumeUnshared() { 73a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat setState(Volume::State_Idle); 74a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat} 75a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 76ae10b91044bf76b40b77d81c169e48e0bbdf6d75San Mehatint DirectVolume::handleBlockEvent(NetlinkEvent *evt) { 77fd7f5875129adfe2845f4f3fffb17db3a89eea25San Mehat const char *dp = evt->findParam("DEVPATH"); 78f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat 79fd7f5875129adfe2845f4f3fffb17db3a89eea25San Mehat PathCollection::iterator it; 80f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat for (it = mPaths->begin(); it != mPaths->end(); ++it) { 81f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat if (!strncmp(dp, *it, strlen(*it))) { 82fd7f5875129adfe2845f4f3fffb17db3a89eea25San Mehat /* We can handle this disk */ 83fd7f5875129adfe2845f4f3fffb17db3a89eea25San Mehat int action = evt->getAction(); 84fd7f5875129adfe2845f4f3fffb17db3a89eea25San Mehat const char *devtype = evt->findParam("DEVTYPE"); 85fd7f5875129adfe2845f4f3fffb17db3a89eea25San Mehat 86a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat if (action == NetlinkEvent::NlActionAdd) { 87a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat int major = atoi(evt->findParam("MAJOR")); 88a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat int minor = atoi(evt->findParam("MINOR")); 89a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat char nodepath[255]; 90a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 91a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat snprintf(nodepath, 92a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat sizeof(nodepath), "/dev/block/vold/%d:%d", 93a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat major, minor); 94a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat if (createDeviceNode(nodepath, major, minor)) { 95a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat LOGE("Error making device node '%s' (%s)", nodepath, 96a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat strerror(errno)); 97a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 98a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat if (!strcmp(devtype, "disk")) { 99fd7f5875129adfe2845f4f3fffb17db3a89eea25San Mehat handleDiskAdded(dp, evt); 100a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } else { 101fd7f5875129adfe2845f4f3fffb17db3a89eea25San Mehat handlePartitionAdded(dp, evt); 102a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 103a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } else if (action == NetlinkEvent::NlActionRemove) { 104a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat if (!strcmp(devtype, "disk")) { 105a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat handleDiskRemoved(dp, evt); 106a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } else { 107fd7f5875129adfe2845f4f3fffb17db3a89eea25San Mehat handlePartitionRemoved(dp, evt); 108a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 109a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } else if (action == NetlinkEvent::NlActionChange) { 110a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat if (!strcmp(devtype, "disk")) { 111a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat handleDiskChanged(dp, evt); 112a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } else { 113a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat handlePartitionChanged(dp, evt); 114a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 115a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } else { 116a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat LOGW("Ignoring non add/remove/change event"); 117f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat } 118fd7f5875129adfe2845f4f3fffb17db3a89eea25San Mehat 119f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat return 0; 120f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat } 121f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat } 122f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat errno = ENODEV; 123f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat return -1; 124f1b736bc5605e92e917ab27f5abf3ba839be2270San Mehat} 125fd7f5875129adfe2845f4f3fffb17db3a89eea25San Mehat 126ae10b91044bf76b40b77d81c169e48e0bbdf6d75San Mehatvoid DirectVolume::handleDiskAdded(const char *devpath, NetlinkEvent *evt) { 127dd9b8e92aaf330b48ddb40a7380588ef92b53de6San Mehat mDiskMajor = atoi(evt->findParam("MAJOR")); 128a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat mDiskMinor = atoi(evt->findParam("MINOR")); 129fd7f5875129adfe2845f4f3fffb17db3a89eea25San Mehat mDiskNumParts = atoi(evt->findParam("NPARTS")); 130a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat char msg[255]; 131fd7f5875129adfe2845f4f3fffb17db3a89eea25San Mehat 132fd7f5875129adfe2845f4f3fffb17db3a89eea25San Mehat int partmask = 0; 133fd7f5875129adfe2845f4f3fffb17db3a89eea25San Mehat int i; 13459abc3c56b432089abfe868c04cdbc3b6d28aee2San Mehat for (i = 1; i <= mDiskNumParts; i++) { 135fd7f5875129adfe2845f4f3fffb17db3a89eea25San Mehat partmask |= (1 << i); 136fd7f5875129adfe2845f4f3fffb17db3a89eea25San Mehat } 137fd7f5875129adfe2845f4f3fffb17db3a89eea25San Mehat mPendingPartMap = partmask; 138fd7f5875129adfe2845f4f3fffb17db3a89eea25San Mehat 139fd7f5875129adfe2845f4f3fffb17db3a89eea25San Mehat if (mDiskNumParts == 0) { 140a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat#ifdef PARTITION_DEBUG 141fd7f5875129adfe2845f4f3fffb17db3a89eea25San Mehat LOGD("Dv::diskIns - No partitions - good to go son!"); 142a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat#endif 143fd7f5875129adfe2845f4f3fffb17db3a89eea25San Mehat setState(Volume::State_Idle); 144fd7f5875129adfe2845f4f3fffb17db3a89eea25San Mehat } else { 145a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat#ifdef PARTITION_DEBUG 146fd7f5875129adfe2845f4f3fffb17db3a89eea25San Mehat LOGD("Dv::diskIns - waiting for %d partitions (mask 0x%x)", 147fd7f5875129adfe2845f4f3fffb17db3a89eea25San Mehat mDiskNumParts, mPendingPartMap); 148a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat#endif 149fd7f5875129adfe2845f4f3fffb17db3a89eea25San Mehat setState(Volume::State_Pending); 150fd7f5875129adfe2845f4f3fffb17db3a89eea25San Mehat } 151a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 152a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat snprintf(msg, sizeof(msg), "Volume %s %s disk inserted (%d:%d)", 153a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat getLabel(), getMountpoint(), mDiskMajor, mDiskMinor); 154a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat mVm->getBroadcaster()->sendBroadcast(ResponseCode::VolumeDiskInserted, 155a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat msg, false); 156fd7f5875129adfe2845f4f3fffb17db3a89eea25San Mehat} 157fd7f5875129adfe2845f4f3fffb17db3a89eea25San Mehat 158ae10b91044bf76b40b77d81c169e48e0bbdf6d75San Mehatvoid DirectVolume::handlePartitionAdded(const char *devpath, NetlinkEvent *evt) { 159fd7f5875129adfe2845f4f3fffb17db3a89eea25San Mehat int major = atoi(evt->findParam("MAJOR")); 160fd7f5875129adfe2845f4f3fffb17db3a89eea25San Mehat int minor = atoi(evt->findParam("MINOR")); 161fd7f5875129adfe2845f4f3fffb17db3a89eea25San Mehat int part_num = atoi(evt->findParam("PARTN")); 16259abc3c56b432089abfe868c04cdbc3b6d28aee2San Mehat 163dd9b8e92aaf330b48ddb40a7380588ef92b53de6San Mehat if (major != mDiskMajor) { 164dd9b8e92aaf330b48ddb40a7380588ef92b53de6San Mehat LOGE("Partition '%s' has a different major than its disk!", devpath); 165dd9b8e92aaf330b48ddb40a7380588ef92b53de6San Mehat return; 166dd9b8e92aaf330b48ddb40a7380588ef92b53de6San Mehat } 167a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat#ifdef PARTITION_DEBUG 168a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat LOGD("Dv:partAdd: part_num = %d, minor = %d\n", part_num, minor); 169a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat#endif 170dd9b8e92aaf330b48ddb40a7380588ef92b53de6San Mehat mPartMinors[part_num -1] = minor; 171dd9b8e92aaf330b48ddb40a7380588ef92b53de6San Mehat 17259abc3c56b432089abfe868c04cdbc3b6d28aee2San Mehat mPendingPartMap &= ~(1 << part_num); 17359abc3c56b432089abfe868c04cdbc3b6d28aee2San Mehat if (!mPendingPartMap) { 174a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat#ifdef PARTITION_DEBUG 17559abc3c56b432089abfe868c04cdbc3b6d28aee2San Mehat LOGD("Dv:partAdd: Got all partitions - ready to rock!"); 176a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat#endif 17759abc3c56b432089abfe868c04cdbc3b6d28aee2San Mehat setState(Volume::State_Idle); 17859abc3c56b432089abfe868c04cdbc3b6d28aee2San Mehat } else { 179a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat#ifdef PARTITION_DEBUG 18059abc3c56b432089abfe868c04cdbc3b6d28aee2San Mehat LOGD("Dv:partAdd: pending mask now = 0x%x", mPendingPartMap); 181a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat#endif 182a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 183a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat} 184a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 185a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehatvoid DirectVolume::handleDiskChanged(const char *devpath, NetlinkEvent *evt) { 186a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat int major = atoi(evt->findParam("MAJOR")); 187a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat int minor = atoi(evt->findParam("MINOR")); 188a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 189a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat if ((major != mDiskMajor) || (minor != mDiskMinor)) { 190a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return; 191a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 192a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 193a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat LOGI("Volume %s disk has changed", getLabel()); 194a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat mDiskNumParts = atoi(evt->findParam("NPARTS")); 195a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat int partmask = 0; 196a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat int i; 197a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat for (i = 1; i <= mDiskNumParts; i++) { 198a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat partmask |= (1 << i); 199a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 200a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat mPendingPartMap = partmask; 201a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 202a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat if (mDiskNumParts == 0) { 203a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat setState(Volume::State_Idle); 204a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } else { 205a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat setState(Volume::State_Pending); 20659abc3c56b432089abfe868c04cdbc3b6d28aee2San Mehat } 207a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 208a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat} 209a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 210a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehatvoid DirectVolume::handlePartitionChanged(const char *devpath, NetlinkEvent *evt) { 211fd7f5875129adfe2845f4f3fffb17db3a89eea25San Mehat} 212fd7f5875129adfe2845f4f3fffb17db3a89eea25San Mehat 213ae10b91044bf76b40b77d81c169e48e0bbdf6d75San Mehatvoid DirectVolume::handleDiskRemoved(const char *devpath, NetlinkEvent *evt) { 214a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat int major = atoi(evt->findParam("MAJOR")); 215a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat int minor = atoi(evt->findParam("MINOR")); 216a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat char msg[255]; 217a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 218a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat LOGD("Volume %s %s disk %d:%d removed\n", getLabel(), getMountpoint(), major, minor); 219a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat snprintf(msg, sizeof(msg), "Volume %s %s disk removed (%d:%d)", 220a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat getLabel(), getMountpoint(), major, minor); 221a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat mVm->getBroadcaster()->sendBroadcast(ResponseCode::VolumeDiskRemoved, 222a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat msg, false); 223a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat setState(Volume::State_NoMedia); 224fd7f5875129adfe2845f4f3fffb17db3a89eea25San Mehat} 225fd7f5875129adfe2845f4f3fffb17db3a89eea25San Mehat 226ae10b91044bf76b40b77d81c169e48e0bbdf6d75San Mehatvoid DirectVolume::handlePartitionRemoved(const char *devpath, NetlinkEvent *evt) { 227a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat int major = atoi(evt->findParam("MAJOR")); 228a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat int minor = atoi(evt->findParam("MINOR")); 229a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat int part_num = atoi(evt->findParam("PARTN")); 230a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat char msg[255]; 231a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 232a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat LOGD("Volume %s %s partition %d:%d removed\n", getLabel(), getMountpoint(), major, minor); 233a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 234a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat /* 235a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat * The framework doesn't need to get notified of 236a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat * partition removal unless it's mounted. Otherwise 237a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat * the removal notification will be sent on the Disk 238a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat * itself 239a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat */ 240a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat if (getState() != Volume::State_Mounted) { 241a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return; 242a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 243a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 244a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat if ((dev_t) MKDEV(major, minor) == mCurrentlyMountedKdev) { 245a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat /* 246a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat * Yikes, our mounted partition is going away! 247a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat */ 248a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat 249a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat snprintf(msg, sizeof(msg), "Volume %s %s bad removal (%d:%d)", 250a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat getLabel(), getMountpoint(), major, minor); 251a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat mVm->getBroadcaster()->sendBroadcast(ResponseCode::VolumeBadRemoval, 252a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat msg, false); 253a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat if (Volume::unmountVol()) { 254a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat LOGE("Failed to unmount volume on bad removal (%s)", 255a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat strerror(errno)); 256a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat // XXX: At this point we're screwed for now 257a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } else { 258a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat LOGD("Crisis averted"); 259a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 260a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 261fd7f5875129adfe2845f4f3fffb17db3a89eea25San Mehat} 26249e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat 263dd9b8e92aaf330b48ddb40a7380588ef92b53de6San Mehat/* 264a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat * Called from base to get a list of devicenodes for mounting 265dd9b8e92aaf330b48ddb40a7380588ef92b53de6San Mehat */ 266a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehatint DirectVolume::getDeviceNodes(dev_t *devs, int max) { 267dd9b8e92aaf330b48ddb40a7380588ef92b53de6San Mehat 268dd9b8e92aaf330b48ddb40a7380588ef92b53de6San Mehat if (mPartIdx == -1) { 269a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat // If the disk has no partitions, try the disk itself 270dd9b8e92aaf330b48ddb40a7380588ef92b53de6San Mehat if (!mDiskNumParts) { 271a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat devs[0] = MKDEV(mDiskMajor, mDiskMinor); 272a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return 1; 273dd9b8e92aaf330b48ddb40a7380588ef92b53de6San Mehat } 274dd9b8e92aaf330b48ddb40a7380588ef92b53de6San Mehat 275a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat int i; 276a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat for (i = 0; i < mDiskNumParts; i++) { 277a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat if (i == max) 278a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat break; 279a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat devs[i] = MKDEV(mDiskMajor, mPartMinors[i]); 280a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat } 281a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return mDiskNumParts; 282dd9b8e92aaf330b48ddb40a7380588ef92b53de6San Mehat } 283a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat devs[0] = MKDEV(mDiskMajor, mPartMinors[mPartIdx -1]); 284a2677e4ad01f250b0765f04adf0acfa6627efc98San Mehat return 1; 28549e2bce5b74129c26a35e25d4693cbfe98c4688eSan Mehat} 286