112 lines
3.3 KiB
C
112 lines
3.3 KiB
C
/* $NetBSD: users.c,v 1.16 2012/03/20 20:34:59 matt Exp $ */
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/*
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* Copyright (c) 1980, 1987, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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#ifndef lint
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__COPYRIGHT("@(#) Copyright (c) 1980, 1987, 1993\
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The Regents of the University of California. All rights reserved.");
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#endif /* not lint */
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#ifndef lint
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#if 0
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static char sccsid[] = "@(#)users.c 8.1 (Berkeley) 6/6/93";
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#endif
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__RCSID("$NetBSD: users.c,v 1.16 2012/03/20 20:34:59 matt Exp $");
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#endif /* not lint */
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#include <sys/types.h>
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#include <err.h>
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#include <time.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include "utmpentry.h"
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int main(int, char **);
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int
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main(int argc, char **argv)
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{
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int ncnt = 0;
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int ch;
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struct utmpentry *from, *ehead, *save, **nextp;
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while ((ch = getopt(argc, argv, "")) != -1)
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switch(ch) {
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case '?':
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default:
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(void)fprintf(stderr, "usage: %s\n", getprogname());
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exit(1);
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}
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argc -= optind;
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argv += optind;
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ncnt = getutentries(NULL, &ehead);
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if (ncnt == 0)
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return 0;
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/*
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* XXX the utmp list belongs to getutentries and we shouldn't
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* sort it in place. Since we don't call endutentries and we
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* don't call getutentries again it doesn't matter, but it's
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* untidy. Maybe give getutentries a sort function? It has to
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* sort anyway if it's merging utmp and utmpx data.
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*/
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from = ehead;
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ehead = NULL;
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while (from != NULL) {
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for (nextp = &ehead;
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(*nextp) && strcmp(from->name, (*nextp)->name) > 0;
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nextp = &(*nextp)->next)
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continue;
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save = from;
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from = from->next;
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save->next = *nextp;
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*nextp = save;
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}
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save = ehead;
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(void)printf("%s", ehead->name);
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for (from = ehead->next; from; from = from->next)
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if (strcmp(save->name, from->name) != 0) {
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(void)printf(" %s", from->name);
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save = from;
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}
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(void)printf("\n");
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exit(0);
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}
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