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4 nishi 1 
/* $Id: ipc.c 5 2024-09-25 00:19:35Z nishi $ */
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#include "cm_ipc.h"
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#include <sys/socket.h>
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#include <sys/un.h>
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#include <string.h>
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#include <unistd.h>
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#include <stdio.h>
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#include <sys/stat.h>
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int cm_ipc_connect(void) {
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	struct sockaddr_un sun;
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	memset(&sun, 0, sizeof(sun));
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	int sock = socket(AF_LOCAL, SOCK_STREAM, 0);
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	if(sock == -1) {
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		return -1;
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	}
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	sun.sun_family = AF_LOCAL;
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	strcpy(sun.sun_path, SOCK_PATH);
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	int ret = connect(sock, (const struct sockaddr*)&sun, sizeof(sun));
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	if(ret == -1) {
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		close(sock);
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		return -1;
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	}
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	return sock;
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}
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int cm_ipc_create(void) {
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	struct sockaddr_un sun;
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	memset(&sun, 0, sizeof(sun));
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	int sock = socket(AF_LOCAL, SOCK_STREAM, 0);
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	if(sock == -1) {
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		return -1;
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	}
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	remove(SOCK_PATH);
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	sun.sun_family = AF_LOCAL;
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	strcpy(sun.sun_path, SOCK_PATH);
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	if(bind(sock, (const struct sockaddr*)&sun, sizeof(sun)) == -1) {
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		close(sock);
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		return -1;
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	}
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	if(listen(sock, 128) == -1) {
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		close(sock);
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		return -1;
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	}
5 nishi 47 
	chmod(sun.sun_path, 0660);
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	return sock;
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}