135457Sbostic /*
2*61344Sbostic * Copyright (c) 1988, 1993
3*61344Sbostic * The Regents of the University of California. All rights reserved.
435457Sbostic *
542662Sbostic * %sccs.include.redist.c%
635457Sbostic */
735457Sbostic
835457Sbostic #if defined(LIBC_SCCS) && !defined(lint)
9*61344Sbostic static char sccsid[] = "@(#)logout.c 8.1 (Berkeley) 06/04/93";
1035457Sbostic #endif /* LIBC_SCCS and not lint */
1135457Sbostic
1235457Sbostic #include <sys/types.h>
1335457Sbostic #include <sys/time.h>
1454586Sbostic
1554586Sbostic #include <fcntl.h>
1635457Sbostic #include <utmp.h>
1754586Sbostic #include <unistd.h>
1854586Sbostic #include <stdlib.h>
1954586Sbostic #include <string.h>
2035457Sbostic
2139179Sbostic typedef struct utmp UTMP;
2236826Sbostic
2354586Sbostic int
logout(line)2435457Sbostic logout(line)
2535457Sbostic register char *line;
2635457Sbostic {
2739179Sbostic register int fd;
2839179Sbostic UTMP ut;
2935457Sbostic int rval;
3035457Sbostic
3154586Sbostic if ((fd = open(_PATH_UTMP, O_RDWR, 0)) < 0)
3235457Sbostic return(0);
3336826Sbostic rval = 0;
3454586Sbostic while (read(fd, &ut, sizeof(UTMP)) == sizeof(UTMP)) {
3539179Sbostic if (!ut.ut_name[0] || strncmp(ut.ut_line, line, UT_LINESIZE))
3635457Sbostic continue;
3739179Sbostic bzero(ut.ut_name, UT_NAMESIZE);
3839179Sbostic bzero(ut.ut_host, UT_HOSTSIZE);
3935457Sbostic (void)time(&ut.ut_time);
4054586Sbostic (void)lseek(fd, -(off_t)sizeof(UTMP), L_INCR);
4154586Sbostic (void)write(fd, &ut, sizeof(UTMP));
4236826Sbostic rval = 1;
4335457Sbostic }
4439179Sbostic (void)close(fd);
4535457Sbostic return(rval);
4635457Sbostic }
47