init/initd/mksock.c

66 lines
1009 B
C

#include <sys/types.h>
#include <sys/socket.h>
#include <sys/stat.h>
#include <sys/un.h>
#include <unistd.h>
#include <string.h>
#include <fcntl.h>
#include <stdio.h>
#include "telinit.h"
#include "init.h"
int mksock(void)
{
struct sockaddr_un un;
int fd, flags;
fd = socket(AF_UNIX, SOCK_STREAM, 0);
if (fd < 0) {
perror("socket");
return -1;
}
flags = fcntl(fd, F_GETFD);
if (flags == -1) {
perror("socket F_GETFD");
goto fail;
}
if (fcntl(fd, F_SETFD, flags | O_CLOEXEC)) {
perror("socket F_SETFD");
goto fail;
}
memset(&un, 0, sizeof(un));
un.sun_family = AF_UNIX;
strcpy(un.sun_path, INITSOCK);
if (bind(fd, (struct sockaddr *)&un, sizeof(un))) {
perror("bind: " INITSOCK);
goto fail;
}
if (chown(INITSOCK, 0, 0)) {
perror("chown: " INITSOCK);
goto fail;
}
if (chmod(INITSOCK, 0770)) {
perror("chmod: " INITSOCK);
goto fail;
}
if (listen(fd, 10)) {
perror("listen");
goto fail;
}
return fd;
fail:
close(fd);
unlink(INITSOCK);
return -1;
}