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


void main(int argc, char *argv[]) {
    char buf[1024];
    int fd;
    char *filename = argv[1];

	if (access(filename, R_OK) != 0) {
        //printf("file '%s' not accessible by user\n", filename);
	    exit(-1); // original user lacks permission
	}

	// file at path `filename` exists and is readable
	// by the original user (i.e., not just by root)
    memset(buf, 0, 1024);
	fd = open(filename, O_RDONLY);
    if (fd == -1) {
        //perror("error in open()");
    } else {
        read(fd, buf, 1024); 
        printf("%s", buf);
    }
}