a9f423dd7e
There's a possibility that if something were messed up a call to NetlinkEvent::findParam could return a NULL. Passing NULL as the argument into atoi() would cause a null pointer dereference. Change-Id: Ib071afbbe2adc341108c245ffa596cc8730bd8fd
83 lines
2.4 KiB
C++
83 lines
2.4 KiB
C++
/*
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* Copyright (C) 2008 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef _DEVICEVOLUME_H
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#define _DEVICEVOLUME_H
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#include <utils/List.h>
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#include <sysutils/NetlinkEvent.h>
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#include "Volume.h"
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#define MAX_PARTS 4
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typedef android::List<char *> PathCollection;
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inline bool getMajorMinorNum(NetlinkEvent *evt, int *major, int *minor) {
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const char *major_str = evt->findParam("MAJOR");
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const char *minor_str = evt->findParam("MINOR");
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if (major_str == NULL || minor_str == NULL) {
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return false;
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}
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*major = atoi(major_str);
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*minor = atoi(minor_str);
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return true;
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}
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class DirectVolume : public Volume {
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public:
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static const int MAX_PARTITIONS = 4;
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protected:
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PathCollection *mPaths;
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int mPartIdx;
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int mDiskMajor;
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int mDiskMinor;
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int mPartMinors[MAX_PARTITIONS];
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int mDiskNumParts;
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unsigned char mPendingPartMap;
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public:
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DirectVolume(VolumeManager *vm, const char *label, const char *mount_point, int partIdx);
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virtual ~DirectVolume();
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int addPath(const char *path);
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int handleBlockEvent(NetlinkEvent *evt);
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dev_t getDiskDevice();
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void handleVolumeShared();
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void handleVolumeUnshared();
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protected:
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int getDeviceNodes(dev_t *devs, int max);
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private:
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void handleDiskAdded(const char *devpath, NetlinkEvent *evt);
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void handleDiskRemoved(const char *devpath, NetlinkEvent *evt);
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void handleDiskChanged(const char *devpath, NetlinkEvent *evt);
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void handlePartitionAdded(const char *devpath, NetlinkEvent *evt);
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void handlePartitionRemoved(const char *devpath, NetlinkEvent *evt);
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void handlePartitionChanged(const char *devpath, NetlinkEvent *evt);
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int doMountVfat(const char *deviceNode, const char *mountPoint);
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};
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typedef android::List<DirectVolume *> DirectVolumeCollection;
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#endif
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