File: 002_test_open.c

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/*
open test */
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>

void writeandclose(int a) {
	write(a, "abc", 3);
	close(a);
}

int main(int argc, char **argv) {
	/* test that the three args work. */
	int a, b, c;

	if (argc < 4) {
		exit(1);
	}

	a = open(argv[1], O_RDONLY);
	b = open(argv[2], O_WRONLY);
	c = open(argv[3], O_RDWR);
	writeandclose(a);
	writeandclose(b);
	writeandclose(c);

	return 0;
}