src/user-sessions/user-sessions.c

   1 /* SPDX-License-Identifier: LGPL-2.1+ */
   2 /***
   3   Copyright 2010 Lennart Poettering
   4 ***/
   5
   6 #include <errno.h>
   7 #include <unistd.h>
   8
   9 #include "fileio.h"
  10 #include "fileio-label.h"
  11 #include "fs-util.h"
  12 #include "log.h"
  13 #include "selinux-util.h"
  14 #include "string-util.h"
  15 #include "util.h"
  16
  17 int main(int argc, char*argv[]) {
  18         int r, k;
  19
  20         if (argc != 2) {
  21                 log_error("This program requires one argument.");
  22                 return EXIT_FAILURE;
  23         }
  24
  25         log_set_target(LOG_TARGET_AUTO);
  26         log_parse_environment();
  27         log_open();
  28
  29         umask(0022);
  30
  31         mac_selinux_init();
  32
  33         if (streq(argv[1], "start")) {
  34                 r = unlink_or_warn("/run/nologin");
  35                 k = unlink_or_warn("/etc/nologin");
  36                 if (k < 0 && r >= 0)
  37                         r = k;
  38
  39         } else if (streq(argv[1], "stop"))
  40                 r = create_shutdown_run_nologin_or_warn();
  41         else {
  42                 log_error("Unknown verb '%s'.", argv[1]);
  43                 r = -EINVAL;
  44         }
  45
  46         mac_selinux_finish();
  47         return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
  48 }