#include <err.h>
#include <fcntl.h>
#include <limits.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#define SCRIPTNAME "script"
#define SCRIPTBODY "#!/bin/sh\nexit 0\n"
int
main(void)
{
char *argv;
size_t size;
int fd;
fd = open(SCRIPTNAME, O_WRONLY | O_CREAT | O_TRUNC, 0700);
if (fd == -1)
err(1, "open");
if (write(fd, SCRIPTBODY, sizeof(SCRIPTBODY) - 1) !=
sizeof(SCRIPTBODY) - 1)
err(1, "write");
close(fd);
size = ARG_MAX / 2;
argv = malloc(size);
if (argv == NULL)
err(1, "malloc");
memset(argv, 'a', size - 1);
argv[size - 1] = '\0';
execve(SCRIPTNAME, (char *[]){ argv, NULL }, (char *[]){ NULL });
exit(1);
}
