1/* See LICENSE file for copyright and license details. */
 2
 3
 4#include <fcntl.h>
 5#include <stdio.h>
 6#include <unistd.h>
 7
 8// ?man nologin: politely refuse login
 9// ?man politely refuse a login attempt by exiting with status 1
10int
11main(void)
12{
13	int fd;
14	char buf[BUFSIZ];
15	ssize_t n;
16
17	fd = open("/etc/nologin.txt", O_RDONLY);
18	if (fd >= 0) {
19		while ((n = read(fd, buf, sizeof(buf))) > 0)
20			write(STDOUT_FILENO, buf, n);
21		close(fd);
22	} else {
23		printf("The account is currently unavailable.\n");
24	}
25	return 1;
26}