/**
 * Example program cat'ing a file
 *
 * Compile with: $ gcc -Wall -o cat cat.c
 */
#include <stdio.h>
#include <stdint.h>
#include <unistd.h>
#include <fcntl.h>

typedef struct __blk128_t {
	uint64_t hi;
	uint64_t lo;
} blk128_t;

#define BUFSZ (sizeof(uint64_t) << 1)

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

	int fd = open(argv[1], O_RDONLY);
	if (fd == -1) {
		printf("Could not open file '%s'\n", argv[1]);
		return 1;
	}

	/* Declare buffer */
	blk128_t blk = {0, 0};

	size_t n = 0;
	size_t t = 0;
	for (; (n = read(fd, &blk, BUFSZ)) > 0; t += n) {
		write(STDOUT_FILENO, &blk, n);
	}
	printf("\nbytes: %lu\n", t);
	close(fd);
	return 0;
}