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/*
* Copyright (C) 2008 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#define LOG_TAG "Vold"
#include <cutils/log.h>
#include <sysutils/NetlinkEvent.h>
#include "DirectVolume.h"
DirectVolume::DirectVolume(const char *label, const char *mount_point, int partIdx) :
Volume(label, mount_point) {
mPartIdx = partIdx;
mPaths = new PathCollection();
for (int i = 0; i < MAX_PARTITIONS; i++)
mPartMinors[i] = -1;
}
DirectVolume::~DirectVolume() {
PathCollection::iterator it;
for (it = mPaths->begin(); it != mPaths->end(); ++it)
free(*it);
delete mPaths;
}
int DirectVolume::addPath(const char *path) {
mPaths->push_back(strdup(path));
return 0;
}
int DirectVolume::handleBlockEvent(NetlinkEvent *evt) {
const char *dp = evt->findParam("DEVPATH");
PathCollection::iterator it;
for (it = mPaths->begin(); it != mPaths->end(); ++it) {
if (!strncmp(dp, *it, strlen(*it))) {
/* We can handle this disk */
int action = evt->getAction();
const char *devtype = evt->findParam("DEVTYPE");
if (!strcmp(devtype, "disk")) {
if (action == NetlinkEvent::NlActionAdd)
handleDiskAdded(dp, evt);
else if (action == NetlinkEvent::NlActionRemove)
handleDiskRemoved(dp, evt);
else
LOGD("Ignoring non add/remove event");
} else {
if (action == NetlinkEvent::NlActionAdd)
handlePartitionAdded(dp, evt);
else if (action == NetlinkEvent::NlActionRemove)
handlePartitionRemoved(dp, evt);
else
LOGD("Ignoring non add/remove event");
}
return 0;
}
}
errno = ENODEV;
return -1;
}
void DirectVolume::handleDiskAdded(const char *devpath, NetlinkEvent *evt) {
mDiskMajor = atoi(evt->findParam("MAJOR"));
mDiskMinor = atoi(evt->findParam("MAJOR"));
mDiskNumParts = atoi(evt->findParam("NPARTS"));
int partmask = 0;
int i;
for (i = 1; i <= mDiskNumParts; i++) {
partmask |= (1 << i);
}
mPendingPartMap = partmask;
if (mDiskNumParts == 0) {
LOGD("Dv::diskIns - No partitions - good to go son!");
setState(Volume::State_Idle);
} else {
LOGD("Dv::diskIns - waiting for %d partitions (mask 0x%x)",
mDiskNumParts, mPendingPartMap);
setState(Volume::State_Pending);
}
}
void DirectVolume::handlePartitionAdded(const char *devpath, NetlinkEvent *evt) {
int major = atoi(evt->findParam("MAJOR"));
int minor = atoi(evt->findParam("MINOR"));
int part_num = atoi(evt->findParam("PARTN"));
if (major != mDiskMajor) {
LOGE("Partition '%s' has a different major than its disk!", devpath);
return;
}
mPartMinors[part_num -1] = minor;
mPendingPartMap &= ~(1 << part_num);
if (!mPendingPartMap) {
LOGD("Dv:partAdd: Got all partitions - ready to rock!");
setState(Volume::State_Idle);
} else {
LOGD("Dv:partAdd: pending mask now = 0x%x", mPendingPartMap);
}
}
void DirectVolume::handleDiskRemoved(const char *devpath, NetlinkEvent *evt) {
}
void DirectVolume::handlePartitionRemoved(const char *devpath, NetlinkEvent *evt) {
}
/*
* Called from Volume to determine the major/minor numbers
* to be used for mounting
*/
int DirectVolume::prepareToMount(int *major, int *minor) {
*major = mDiskMajor;
if (mPartIdx == -1) {
/* No specific partition specified */
if (!mDiskNumParts) {
*minor = mDiskMinor;
return 0;
}
/*
* XXX: Use first partition for now.
* The right thing to do would be to choose
* this based on the partition type.
*
*/
*minor = mPartMinors[0];
return 0;
}
if (mPartIdx - 1 > mDiskNumParts) {
errno = EINVAL;
return -1;
}
*minor = mPartMinors[mPartIdx-1];
return 0;
}
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