fa1c677c1a
It's extremely difficult to test storage related logic on devices that don't have physical SD card slots. So to support better debugging and testing, add a new "virtual disk" feature which mounts a 512MB file through loop device. It relies on the kernel having the "loop.max_part" value set to something other than 0 via the boot command line, since that allows all the existing partition logic to fall into place. Bug: 34903607 Test: builds, boots, virtual disk works Change-Id: I04c5b33e37319d867542985a56b7999a9b7cf35d
42 lines
1.4 KiB
C++
42 lines
1.4 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 _LOOP_H
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#define _LOOP_H
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#include <string>
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#include <unistd.h>
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#include <linux/loop.h>
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class SocketClient;
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class Loop {
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public:
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static const int LOOP_MAX = 4096;
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public:
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static int lookupActive(const char *id, char *buffer, size_t len);
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static int lookupInfo(const char *loopDevice, struct asec_superblock *sb, unsigned long *nr_sec);
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static int create(const char *id, const char *loopFile, char *loopDeviceBuffer, size_t len);
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static int create(const std::string& file, std::string& out_device);
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static int destroyByDevice(const char *loopDevice);
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static int destroyByFile(const char *loopFile);
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static int createImageFile(const char *file, unsigned long numSectors);
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static int resizeImageFile(const char *file, unsigned long numSectors);
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static int dumpState(SocketClient *c);
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};
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#endif
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