msgsimple.h
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msgsimple.h
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	#ifndef __MSG_SIMPLE_H
	#define __MSG_SIMPLE_H

	#include <errno.h>
	#include <stdint.h>
	#include <resgroup.h>

	typedef struct __attribute__ ((packed)) {
	uint32_t gh_magic;
	uint32_t gh_length;
	uint32_t gh_command;
	uint32_t gh_arg1;
	uint32_t gh_arg2;
	/* XXX alignment issue on ia64 */
	} generic_msg_hdr;

	#define swab_generic_msg_hdr(ptr)\
	{\
	swab32((ptr)->gh_magic);\
	swab32((ptr)->gh_length);\
	swab32((ptr)->gh_command);\
	swab32((ptr)->gh_arg1);\
	swab32((ptr)->gh_arg2);\
	}

	typedef struct __attribute__ ((packed)) {
	generic_msg_hdr sm_hdr;
	struct {
	char d_svcName[64];
	uint32_t d_action;
	uint32_t d_svcState;
	uint64_t d_svcOwner;
	int32_t d_ret;
	uint32_t d_pad;
	} sm_data;
	} SmMessageSt;

	#define swab_SmMessageSt(ptr) \
	{\
	swab_generic_msg_hdr(&((ptr)->sm_hdr));\
	swab32((ptr)->sm_data.d_action);\
	swab32((ptr)->sm_data.d_svcState);\
	swab64((ptr)->sm_data.d_svcOwner);\
	swab32((ptr)->sm_data.d_ret);\
	}

	typedef struct __attribute__ ((packed)) {
	generic_msg_hdr rsm_hdr;
	rg_state_t rsm_state;
	} rg_state_msg_t;

	#define swab_rg_state_msg_t(ptr) \
	{\
	swab_generic_msg_hdr(&((ptr)->rsm_hdr));\
	swab_rg_state_t(&((ptr)->rsm_state));\
	}


	#define GENERIC_HDR_MAGIC 0x123abc00
	#define GENERIC_HDR_MAGICV2 0x123abc02

	int msg_send_simple(int fd, int cmd, int arg1, int arg2);
	int msg_receive_simple(int fd, generic_msg_hdr ** buf, int timeout);

	#endif