view calypso/targetfd.c @ 44:0bc89d61fc59

top Makefile: add serial
author Mychaela Falconia <falcon@freecalypso.org>
date Sat, 20 Mar 2021 21:53:31 +0000
parents deeeef558279
children
line wrap: on
line source

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>

int target_fd;

parse_target_fd_opt(argc, argv)
	char **argv;
{
	extern char *optarg;
	int c;

	while ((c = getopt(argc, argv, "C:")) != EOF) {
		switch (c) {
		case 'C':
			target_fd = atoi(optarg);
			continue;
		case '?':
		default:
			/* error msg already printed */
			exit(1);
		}
	}
	if (!target_fd) {
		fprintf(stderr, "error: target fd must be given with -C\n");
		exit(1);
	}
	return(0);
}