1 /* hostname.c -- use uname() to get the name of the host 2 Copyright (C) 1992 Free Software Foundation, Inc. 3 4 This program is free software; you can redistribute it and/or modify 5 it under the terms of the GNU General Public License as published by 6 the Free Software Foundation; either version 2, or (at your option) 7 any later version. 8 9 This program 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 12 GNU General Public License for more details. 13 14 You should have received a copy of the GNU General Public License 15 along with this program; if not, write to the Free Software 16 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ 17 18 #ifdef HAVE_CONFIG_H 19 #include "config.h" 20 #endif 21 22 #if defined(STDC_HEADERS) || defined(USG) 23 #include <string.h> 24 #ifndef index 25 #define index strchr 26 #endif 27 #else 28 #include <strings.h> 29 #endif 30 31 #include <sys/utsname.h> 32 33 /* Put this host's name into NAME, using at most NAMELEN characters */ 34 35 int 36 gethostname(name, namelen) 37 char *name; 38 int namelen; 39 { 40 struct utsname ugnm; 41 42 if (uname(&ugnm) < 0) 43 return (-1); 44 45 (void) strncpy(name, ugnm.nodename, namelen-1); 46 name[namelen-1] = '\0'; 47 48 return (0); 49 } 50