securityd/src/SharedMemoryServer.h

/*
 * Copyright (c) 2016 Apple Inc. All Rights Reserved.
 *
 * @APPLE_LICENSE_HEADER_START@
 *
 * This file contains Original Code and/or Modifications of Original Code
 * as defined in and that are subject to the Apple Public Source License
 * Version 2.0 (the 'License'). You may not use this file except in
 * compliance with the License. Please obtain a copy of the License at
 * http://www.opensource.apple.com/apsl/ and read it before using this
 * file.
 *
 * The Original Code and all software distributed under the License are
 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
 * Please see the License for the specific language governing rights and
 * limitations under the License.
 *
 * @APPLE_LICENSE_HEADER_END@
 */

#ifndef __SHARED_MEMORY_SERVER__
#define __SHARED_MEMORY_SERVER__

#include <stdlib.h>
#include <string>
#include "SharedMemoryCommon.h"

class SharedMemoryServer
{
protected:
	std::string mSegmentName, mFileName;
	size_t mSegmentSize;
    uid_t mUID;

    u_int8_t* mSegment;
	u_int8_t* mDataArea;
	u_int8_t* mDataPtr;
	u_int8_t* mDataMax;

    int mBackingFile;

	void WriteOffset (SegmentOffsetType offset);
	void WriteData (const void* data, SegmentOffsetType length);


public:
	SharedMemoryServer (const char* segmentName, SegmentOffsetType segmentSize, uid_t uid = 0, gid_t gid = 0);
	virtual ~SharedMemoryServer ();

	void WriteMessage (SegmentOffsetType domain, SegmentOffsetType event, const void *message, SegmentOffsetType messageLength);

	const char* GetSegmentName ();
	size_t GetSegmentSize ();

	void SetProducerOffset (SegmentOffsetType producerOffset);
};


#endif
Commit	Line	Data
	1	/*
	2	* Copyright (c) 2016 Apple Inc. All Rights Reserved.
	3	*
	4	* @APPLE_LICENSE_HEADER_START@
	5	*
	6	* This file contains Original Code and/or Modifications of Original Code
	7	* as defined in and that are subject to the Apple Public Source License
	8	* Version 2.0 (the 'License'). You may not use this file except in
	9	* compliance with the License. Please obtain a copy of the License at
	10	* http://www.opensource.apple.com/apsl/ and read it before using this
	11	* file.
	12	*
	13	* The Original Code and all software distributed under the License are
	14	* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
	15	* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
	16	* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
	17	* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
	18	* Please see the License for the specific language governing rights and
	19	* limitations under the License.
	20	*
	21	* @APPLE_LICENSE_HEADER_END@
	22	*/
	23
	24	#ifndef __SHARED_MEMORY_SERVER__
	25	#define __SHARED_MEMORY_SERVER__
	26
	27	#include <stdlib.h>
	28	#include <string>
	29	#include "SharedMemoryCommon.h"
	30
	31	class SharedMemoryServer
	32	{
	33	protected:
	34	std::string mSegmentName, mFileName;
	35	size_t mSegmentSize;
	36	uid_t mUID;
	37
	38	u_int8_t* mSegment;
	39	u_int8_t* mDataArea;
	40	u_int8_t* mDataPtr;
	41	u_int8_t* mDataMax;
	42
	43	int mBackingFile;
	44
	45	void WriteOffset (SegmentOffsetType offset);
	46	void WriteData (const void* data, SegmentOffsetType length);
	47
	48
	49	public:
	50	SharedMemoryServer (const char* segmentName, SegmentOffsetType segmentSize, uid_t uid = 0, gid_t gid = 0);
	51	virtual ~SharedMemoryServer ();
	52
	53	void WriteMessage (SegmentOffsetType domain, SegmentOffsetType event, const void *message, SegmentOffsetType messageLength);
	54
	55	const char* GetSegmentName ();
	56	size_t GetSegmentSize ();
	57
	58	void SetProducerOffset (SegmentOffsetType producerOffset);
	59	};
	60
	61
	62
	63	#endif