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

#include <sys/types.h>
#include <sys/stat.h>
#include <sys/ptrace.h>
#include <sys/wait.h>

#include <unistd.h>

#include <err.h>

int
main(int argc, char *argv[]) {

	int rc;
	int status;
	pid_t pid;

	if (argc < 2) {
		fprintf(stderr, "usage: %s <pid>\n", argv[0]);
		exit(1);
	}

	pid=(pid_t)atoi(argv[1]);

	if (ptrace(PT_ATTACH, pid, 0, 0) == -1) {
		perror("ptrace(attach)");
		exit(1);
	}

	printf("[+] Attaching pid %s\n", argv[1]);

	printf("[+] Sleeping 10s\n");
	sleep(10);

	if (waitpid(pid, &status, WUNTRACED) == -1)
		errx(1, "waitpid()");

	if (ptrace(PT_DETACH, pid, 0, 0) == -1) {
		perror("ptrace(detach)");
		exit(1);
	}
	printf("[+] Detaching pid %s\n", argv[1]);

	return (0);
}