53 lines
1.5 KiB
C
53 lines
1.5 KiB
C
/* gethostname emulation for SysV and POSIX.1.
|
|
|
|
Copyright (C) 1992, 2003, 2006 Free Software Foundation, Inc.
|
|
|
|
This program is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; either version 2, or (at your option)
|
|
any later version.
|
|
|
|
This program 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 General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program; if not, write to the Free Software Foundation,
|
|
Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
|
|
|
|
/* David MacKenzie <djm@gnu.ai.mit.edu> */
|
|
|
|
#include <config.h>
|
|
|
|
#ifdef HAVE_UNAME
|
|
# include <sys/utsname.h>
|
|
#endif
|
|
|
|
/* Put up to LEN chars of the host name into NAME.
|
|
Null terminate it if the name is shorter than LEN.
|
|
Return 0 if ok, -1 if error. */
|
|
|
|
#include <stddef.h>
|
|
|
|
int
|
|
gethostname (char *name, size_t len)
|
|
{
|
|
#ifdef HAVE_UNAME
|
|
struct utsname uts;
|
|
|
|
if (uname (&uts) == -1)
|
|
return -1;
|
|
if (len > sizeof (uts.nodename))
|
|
{
|
|
/* More space than we need is available. */
|
|
name[sizeof (uts.nodename)] = '\0';
|
|
len = sizeof (uts.nodename);
|
|
}
|
|
strncpy (name, uts.nodename, len);
|
|
#else
|
|
strcpy (name, ""); /* Hardcode your system name if you want. */
|
|
#endif
|
|
return 0;
|
|
}
|