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