sysdeps/unix/sysv/gethostname.c

   1 /* Copyright (C) 1992, 1995, 1997 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 not,
  16    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  17    Boston, MA 02111-1307, USA.  */
  18
  19 #include <errno.h>
  20 #include <unistd.h>
  21 #include <sys/utsname.h>
  22
  23 /* Put the name of the current host in no more than LEN bytes of NAME.
  24    The result is null-terminated if LEN is large enough for the full
  25    name and the terminator.  */
  26 int
  27 __gethostname (name, len)
  28      char *name;
  29      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)