diff options
Diffstat (limited to 'libbsd/logout.c')
-rw-r--r-- | libbsd/logout.c | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/libbsd/logout.c b/libbsd/logout.c new file mode 100644 index 0000000..43b96c5 --- /dev/null +++ b/libbsd/logout.c @@ -0,0 +1,71 @@ +/* + * Copyright (c) 1988 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 5.5 (Berkeley) 6/1/90"; +#endif /* LIBC_SCCS and not lint */ + +#include <string.h> +#include <sys/types.h> +#include <sys/file.h> +#include <time.h> +#include <unistd.h> +#include <utmp.h> + + +typedef struct utmp UTMP; + +logout(line) + register char *line; +{ + register int fd; + UTMP ut; + int rval; + off_t lseek(); + time_t time(); + + if ((fd = open(_PATH_UTMP, O_RDWR)) < 0) + return(0); + rval = 0; + while (read(fd, (char *)&ut, sizeof(UTMP)) == sizeof(UTMP)) { + if (!ut.ut_user[0] || strncmp(ut.ut_line, line, UT_LINESIZE)) + continue; + ut.ut_type = DEAD_PROCESS; + (void)time(&ut.ut_time); + (void)lseek(fd, -(long)sizeof(UTMP), L_INCR); + (void)write(fd, (char *)&ut, sizeof(UTMP)); + rval = 1; + } + (void)close(fd); + return(rval); +} |