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/* Copyright (C) 1992, 1995, 1996, 1997 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If not,
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#include <errno.h>
#include <string.h>
#include <unistd.h>
#include <sys/utsname.h>
/* Put the name of the current host in no more than LEN bytes of NAME.
The result is null-terminated if LEN is large enough for the full
name and the terminator. */
int
__gethostname (name, len)
char *name;
size_t len;
{
struct utsname buf;
size_t node_len;
if (name == NULL)
{
__set_errno (EINVAL);
return -1;
}
if (uname (&buf))
return -1;
node_len = strlen (buf.nodename) + 1;
if (node_len > len)
{
__set_errno (EINVAL);
return -1;
}
memcpy (name, buf.nodename, node_len);
return 0;
}
weak_alias (__gethostname, gethostname)
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