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 #ifdef HAVE_CONFIG_H 15 #include "config.h" 16 #endif 17 18 #if defined(STDC_HEADERS) || defined(USG) 19 #include <string.h> 20 #ifndef index 21 #define index strchr 22 #endif 23 #else 24 #include <strings.h> 25 #endif 26 27 #include <sys/utsname.h> 28 29 /* Put this host's name into NAME, using at most NAMELEN characters */ 30 31 int 32 gethostname(name, namelen) 33 char *name; 34 int namelen; 35 { 36 struct utsname ugnm; 37 38 if (uname(&ugnm) < 0) 39 return (-1); 40 41 (void) strncpy(name, ugnm.nodename, namelen-1); 42 name[namelen-1] = '\0'; 43 44 return (0); 45 } 46