/** * * $Id: gethostname.c,v 1.1 2004/08/28 19:25:45 dannybackx Exp $ * * Based on gethostname.c from GNU sh-utils 1.12. * * gethostname emulation for SysV and POSIX.1. * * Copyright (C) 1992, 1996 Free Software Foundation, Inc. * Copyright (C) 1996-2001 LessTif Development Team * * This file is part of the GNU LessTif Library. * * 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., 675 Mass Ave, Cambridge, MA 02139, USA. * **/ /* David MacKenzie */ #include #ifndef HAVE_GETHOSTNAME #include #include #ifdef HAVE_UNAME #include #else #ifdef HAVE_SYS_SYSTEMINFO_H #include #endif #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. */ extern 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 #ifdef HAVE_SYS_SYSTEMINFO_H sysinfo(SI_HOSTNAME, name, len); #else #error You lose. #endif /* HAVE_SYS_SYSTEMINFO_H */ #endif /* HAVE_UNAME */ return 0; } #endif /* !HAVE_GETHOSTNAME */
