1/*- 2 * Copyright (c) 1988, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34#include <sys/cdefs.h> 35__FBSDID("$FreeBSD: src/lib/libutil/logout.c,v 1.11 2003/10/18 10:04:16 markm Exp $"); 36 37#if defined(LIBC_SCCS) && !defined(lint) 38#if 0 39static char sccsid[] = "@(#)logout.c 8.1 (Berkeley) 6/4/93"; 40#endif 41#endif /* LIBC_SCCS and not lint */ 42 43#include <sys/types.h> 44#include <sys/time.h> 45 46#include <fcntl.h> 47#include <libutil.h> 48#include <stdlib.h> 49#include <string.h> 50#include <timeconv.h> 51#include <unistd.h> 52#include <utmp.h> 53 54typedef struct utmp UTMP; 55 56int 57logout(const char *line) 58{ 59 int fd; 60 UTMP ut; 61 int rval; 62 63 if ((fd = open(_PATH_UTMP, O_RDWR, 0)) < 0) 64 return(0); 65 rval = 0; 66 while (read(fd, &ut, sizeof(UTMP)) == sizeof(UTMP)) { 67 if (!ut.ut_name[0] || strncmp(ut.ut_line, line, UT_LINESIZE)) 68 continue; 69 bzero(ut.ut_name, UT_NAMESIZE); 70 bzero(ut.ut_host, UT_HOSTSIZE); 71 ut.ut_time = _time_to_time32(time(NULL)); 72 (void)lseek(fd, -(off_t)sizeof(UTMP), L_INCR); 73 (void)write(fd, &ut, sizeof(UTMP)); 74 rval = 1; 75 } 76 (void)close(fd); 77 return(rval); 78} 79