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#include <fcntl.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/socket.h>
#include <sys/types.h>
#include <sys/un.h>
#include <unistd.h>
static int open_unix_socket(char * socket_name)
int fd = socket(AF_UNIX, SOCK_DGRAM, 0);
if(fd == -1)
struct sockaddr_un saddr;
memset(&saddr, 0, sizeof(struct sockaddr_un));
saddr.sun_family = AF_UNIX;
strncpy(saddr.sun_path, socket_name, strlen(socket_name));
bind(fd, (struct sockaddr *) &saddr, sizeof(struct sockaddr_un));
return fd;
static int open_kmsg(char * node_name)
return open(node_name, O_WRONLY);
int main(int argc, char * argv[])
int src = open_unix_socket(argv[1]);
int dst = open_kmsg(argv[2]);
char buf[2048];
int bytes;
bytes = recvfrom(src, buf, 2048, 0, NULL, 0);
write(dst, buf, bytes);
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