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File: [local] / src / usr.bin / logname / logname.c (download)
Revision 1.10, Thu Oct 13 11:51:02 2016 UTC (7 years, 8 months ago) by schwarze
delete useless call to setlocale(3); while here, polish style: sort headers, static __dead usage(), return from main etc... based on a more intrusive diff by tedu@, reminded by Jan Stary <hans at stare dot cz>, using feedback from millert@; OK tedu@, deraadt@ |
/* $OpenBSD: logname.c,v 1.10 2016/10/13 11:51:02 schwarze Exp $ */ /* $NetBSD: logname.c,v 1.6 1994/12/22 06:39:32 jtc Exp $ */ /*- * Copyright (c) 1991, 1993, 1994 * The Regents of the University of California. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #include <err.h> #include <stdio.h> #include <stdlib.h> #include <unistd.h> static void __dead usage(void) { (void)fprintf(stderr, "usage: logname\n"); exit(1); } int main(int argc, char *argv[]) { int ch; char *p; if (pledge("stdio", NULL) == -1) err(1, "pledge"); while ((ch = getopt(argc, argv, "")) != -1) switch (ch) { default: usage(); } if (argc != optind) usage(); if ((p = getlogin()) == NULL) err(1, NULL); (void)printf("%s\n", p); return 0; }