src/basic/hostname-util.h

   1 /* SPDX-License-Identifier: LGPL-2.1+ */
   2 #pragma once
   3
   4 /***
   5   This file is part of systemd.
   6
   7   Copyright 2010-2015 Lennart Poettering
   8
   9   systemd is free software; you can redistribute it and/or modify it
  10   under the terms of the GNU Lesser General Public License as published by
  11   the Free Software Foundation; either version 2.1 of the License, or
  12   (at your option) any later version.
  13
  14   systemd is distributed in the hope that it will be useful, but
  15   WITHOUT ANY WARRANTY; without even the implied warranty of
  16   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  17   Lesser General Public License for more details.
  18
  19   You should have received a copy of the GNU Lesser General Public License
  20   along with systemd; If not, see <http://www.gnu.org/licenses/>.
  21 ***/
  22
  23 #include <stdbool.h>
  24
  25 #include "macro.h"
  26
  27 bool hostname_is_set(void);
  28
  29 char* gethostname_malloc(void);
  30 int gethostname_strict(char **ret);
  31
  32 bool hostname_is_valid(const char *s, bool allow_trailing_dot) _pure_;
  33 char* hostname_cleanup(char *s);
  34
  35 #define machine_name_is_valid(s) hostname_is_valid(s, false)
  36
  37 bool is_localhost(const char *hostname);
  38 bool is_gateway_hostname(const char *hostname);
  39
  40 int sethostname_idempotent(const char *s);
  41
  42 int read_hostname_config(const char *path, char **hostname);