/*
 * This module contains the code for passing the serial channel to a
 * second program, used by fc-iram and fc-xram.
 */

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

extern char **passon_argv;
extern int passon_argc;

exec_2nd_prog()
{
	char **execp_argv;
	char **sp, **dp;
	extern int target_fd;
	char desc_arg[16];

	sprintf(desc_arg, "-d%d", target_fd);
	execp_argv = (char **) malloc(sizeof(char *) * (passon_argc + 2));
	if (!execp_argv) {
		perror("malloc argv for execvp");
		exit(1);
	}
	sp = passon_argv;
	dp = execp_argv;
	*dp++ = *sp++;
	*dp++ = desc_arg;
	while (*sp)
		*dp++ = *sp++;
	*dp = NULL;
	execvp(execp_argv[0], execp_argv);
	fprintf(stderr, "Unable to execvp %s\n", passon_argv[0]);
	exit(1);
}