11590Srgrimes/*- 21590Srgrimes * Copyright (c) 1991, 1993, 1994 31590Srgrimes * The Regents of the University of California. All rights reserved. 41590Srgrimes * 51590Srgrimes * Redistribution and use in source and binary forms, with or without 61590Srgrimes * modification, are permitted provided that the following conditions 71590Srgrimes * are met: 81590Srgrimes * 1. Redistributions of source code must retain the above copyright 91590Srgrimes * notice, this list of conditions and the following disclaimer. 101590Srgrimes * 2. Redistributions in binary form must reproduce the above copyright 111590Srgrimes * notice, this list of conditions and the following disclaimer in the 121590Srgrimes * documentation and/or other materials provided with the distribution. 131590Srgrimes * 4. Neither the name of the University nor the names of its contributors 141590Srgrimes * may be used to endorse or promote products derived from this software 151590Srgrimes * without specific prior written permission. 161590Srgrimes * 171590Srgrimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 181590Srgrimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 191590Srgrimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 201590Srgrimes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 211590Srgrimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 221590Srgrimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 231590Srgrimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 241590Srgrimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 251590Srgrimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 261590Srgrimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 271590Srgrimes * SUCH DAMAGE. 281590Srgrimes */ 291590Srgrimes 301590Srgrimes#ifndef lint 3187287Sdwmalonestatic const char copyright[] = 321590Srgrimes"@(#) Copyright (c) 1991, 1993, 1994\n\ 331590Srgrimes The Regents of the University of California. All rights reserved.\n"; 341590Srgrimes#endif /* not lint */ 351590Srgrimes 361590Srgrimes#ifndef lint 3787287Sdwmalonestatic const char sccsid[] = "@(#)logname.c 8.2 (Berkeley) 4/3/94"; 381590Srgrimes#endif /* not lint */ 3999112Sobrien#include <sys/cdefs.h> 4099112Sobrien__FBSDID("$FreeBSD$"); 411590Srgrimes 421590Srgrimes#include <err.h> 431590Srgrimes#include <unistd.h> 441590Srgrimes#include <stdio.h> 451590Srgrimes#include <stdlib.h> 461590Srgrimes 4792920Simpvoid usage(void); 481590Srgrimes 491590Srgrimesint 50102944Sdwmalonemain(int argc, char *argv[] __unused) 511590Srgrimes{ 521590Srgrimes char *p; 531590Srgrimes 5477789Sphk if (argc != 1) 5577789Sphk usage(); 561590Srgrimes if ((p = getlogin()) == NULL) 571590Srgrimes err(1, NULL); 581590Srgrimes (void)printf("%s\n", p); 591590Srgrimes exit(0); 601590Srgrimes} 611590Srgrimes 621590Srgrimesvoid 63102944Sdwmaloneusage(void) 641590Srgrimes{ 651590Srgrimes (void)fprintf(stderr, "usage: logname\n"); 661590Srgrimes exit(1); 671590Srgrimes} 68