GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: lib/libutil/logout.c Lines: 13 14 92.9 %
Date: 2017-11-13 Branches: 7 8 87.5 %

Line Branch Exec Source
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/*	$OpenBSD: logout.c,v 1.9 2015/12/28 20:11:36 guenther Exp $	*/
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/*
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 * Copyright (c) 1988, 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/types.h>
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#include <sys/time.h>
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#include <fcntl.h>
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#include <utmp.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <string.h>
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#include "util.h"
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typedef struct utmp UTMP;
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int
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logout(const char *line)
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{
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	int fd, rval;
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	UTMP ut;
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	if ((fd = open(_PATH_UTMP, O_RDWR|O_CLOEXEC)) < 0)
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		return(0);
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	rval = 0;
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	while (read(fd, &ut, sizeof(UTMP)) == sizeof(UTMP)) {
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		if (!ut.ut_name[0] || strncmp(ut.ut_line, line, UT_LINESIZE))
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			continue;
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		memset(ut.ut_name, 0, UT_NAMESIZE);
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		memset(ut.ut_host, 0, UT_HOSTSIZE);
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		(void)time(&ut.ut_time);
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		(void)lseek(fd, -(off_t)sizeof(UTMP), SEEK_CUR);
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		(void)write(fd, &ut, sizeof(UTMP));
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		rval = 1;
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	}
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	(void)close(fd);
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	return(rval);
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}