view libserial-linux/openport.c @ 745:9e3b1ef1f440

make-imeisv utility documented
author Mychaela Falconia <falcon@freecalypso.org>
date Mon, 19 Oct 2020 06:47:13 +0000
parents fd7b447b99e3
children
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/*
 * This module implements the basic serial port opening operation.
 */

#include <sys/types.h>
#include <sys/file.h>
#include <sys/ioctl.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>

int target_fd;

open_serial_port(ttyport)
	char *ttyport;
{
	target_fd = open(ttyport, O_RDWR|O_NONBLOCK);
	if (target_fd < 0) {
		perror(ttyport);
		exit(1);
	}
	ioctl(target_fd, TIOCEXCL);
	return 0;
}