sysdeps/unix/sysv/gethostname.c

   1 /* Copyright (C) 1992, 1995 Free Software Foundation, Inc.
   2 This file is part of the GNU C Library.
   3
   4 The GNU C Library is free software; you can redistribute it and/or
   5 modify it under the terms of the GNU Library General Public License as
   6 published by the Free Software Foundation; either version 2 of the
   7 License, or (at your option) any later version.
   8
   9 The GNU C Library is distributed in the hope that it will be useful,
  10 but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12 Library General Public License for more details.
  13
  14 You should have received a copy of the GNU Library General Public
  15 License along with the GNU C Library; see the file COPYING.LIB.  If
  16 not, write to the Free Software Foundation, Inc., 675 Mass Ave,
  17 Cambridge, MA 02139, USA.  */
  18
  19 #include <ansidecl.h>
  20 #include <errno.h>
  21 #include <unistd.h>
  22 #include <sys/utsname.h>
  23
  24 /* Put the name of the current host in no more than LEN bytes of NAME.
  25    The result is null-terminated if LEN is large enough for the full
  26    name and the terminator.  */
  27 int
  28 DEFUN(__gethostname, (name, len),
  29       char *name AND size_t len)
  30 {
  31   struct utsname buf;
  32   if (uname (&buf))
  33     return -1;
  34   strncpy (name, buf.nodename, len);
  35   return 0;
  36 }
  37
  38 weak_alias (__gethostname, gethostname)