| /* |
| * Copyright (c) 1988, 1993 |
| * 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. All advertising materials mentioning features or use of this software |
| * must display the following acknowledgement: |
| * This product includes software developed by the University of |
| * California, Berkeley and its contributors. |
| * 4. 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. |
| */ |
| |
| #if defined(LIBC_SCCS) && !defined(lint) |
| static char sccsid[] = "@(#)logout.c 8.1 (Berkeley) 6/4/93"; |
| #endif /* LIBC_SCCS and not lint */ |
| |
| #include <sys/types.h> |
| #include <sys/time.h> |
| |
| #include <fcntl.h> |
| #include <utmp.h> |
| #include <unistd.h> |
| #include <stdlib.h> |
| #include <string.h> |
| |
| typedef struct utmp UTMP; |
| |
| int |
| logout(line) |
| register const char *line; |
| { |
| register int fd; |
| UTMP ut; |
| int rval; |
| |
| if ((fd = open(_PATH_UTMP, O_RDWR, 0)) < 0) |
| return(0); |
| rval = 0; |
| while (read(fd, &ut, sizeof(UTMP)) == sizeof(UTMP)) { |
| if (!ut.ut_name[0] || strncmp(ut.ut_line, line, UT_LINESIZE)) |
| continue; |
| bzero(ut.ut_name, UT_NAMESIZE); |
| bzero(ut.ut_host, UT_HOSTSIZE); |
| (void)time(&ut.ut_time); |
| (void)lseek(fd, -(off_t)sizeof(UTMP), L_INCR); |
| (void)write(fd, &ut, sizeof(UTMP)); |
| rval = 1; |
| } |
| (void)close(fd); |
| return(rval); |
| } |