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

int main(int argc, char *argv[])
{
	int fd;
	char buf[50], buf2[] = "blah blah\n";

	fd = open("temp", O_RDONLY);
	if (fd < 0)
		perror("Error reading temp");
	else {
		read(fd, buf, 50);
		close(fd);
	}
	fd = open("temp", O_WRONLY);
	if (fd < 0)
		perror("Error writing temp");
	else {
		write(fd, buf2, strlen(buf));
		close(fd);
	}
	return 0;
}