crypto/external/bsd/heimdal/dist/lib/roken/gethostname.c

   1 /*      $NetBSD: gethostname.c,v 1.1.1.1 2011/04/13 18:15:41 elric Exp $        */
   2
   3 /*
   4  * Copyright (c) 1995, 1996, 1997 Kungliga Tekniska Högskolan
   5  * (Royal Institute of Technology, Stockholm, Sweden).
   6  * All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  *
  12  * 1. Redistributions of source code must retain the above copyright
  13  *    notice, this list of conditions and the following disclaimer.
  14  *
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  *
  19  * 3. Neither the name of the Institute nor the names of its contributors
  20  *    may be used to endorse or promote products derived from this software
  21  *    without specific prior written permission.
  22  *
  23  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
  24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
  27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  33  * SUCH DAMAGE.
  34  */
  35
  36 #include <config.h>
  37 #include <krb5/roken.h>
  38
  39 #ifndef HAVE_GETHOSTNAME
  40
  41 #ifdef HAVE_SYS_UTSNAME_H
  42 #include <sys/utsname.h>
  43 #endif
  44
  45 /*
  46  * Return the local host's name in "name", up to "namelen" characters.
  47  * "name" will be null-terminated if "namelen" is big enough.
  48  * The return code is 0 on success, -1 on failure.  (The calling
  49  * interface is identical to gethostname(2).)
  50  */
  51
  52 ROKEN_LIB_FUNCTION int ROKEN_LIB_CALL
  53 gethostname(char *name, int namelen)
  54 {
  55 #if defined(HAVE_UNAME)
  56     {
  57         struct utsname utsname;
  58         int ret;
  59
  60         ret = uname (&utsname);
  61         if (ret < 0)
  62             return ret;
  63         strlcpy (name, utsname.nodename, namelen);
  64         return 0;
  65     }
  66 #else
  67     strlcpy (name, "some.random.host", namelen);
  68     return 0;
  69 #endif
  70 }
  71
  72 #endif /* GETHOSTNAME */