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

int main(int argc, char ** argv){
	if(argc < 2){
		printf("Usage:  %s pid\n", argv[0]);
		return 1;
	}

	int fd = open("/proc/process_info", O_RDONLY);
	if(fd < 0){
		perror("open");
		return 2;
	}

	unsigned long pid = atoi(argv[1]);
	if(!pid){
		printf("Invalid pid 0\n");
		return 3;
	}	
	
	long retval = ioctl(fd, 10, pid);
	if(retval) {
		perror("ioctl");
		return 4;
	}
	char report[4196];
	size_t readlen = read(fd, report, 4196);
	report[readlen] = 0;
	printf(report);

	close(fd);
	return 0;
}