135457Sbostic /* 235457Sbostic * Copyright (c) 1988 The Regents of the University of California. 335457Sbostic * All rights reserved. 435457Sbostic * 542662Sbostic * %sccs.include.redist.c% 635457Sbostic */ 735457Sbostic 835457Sbostic #if defined(LIBC_SCCS) && !defined(lint) 9*54586Sbostic static char sccsid[] = "@(#)logout.c 5.6 (Berkeley) 07/01/92"; 1035457Sbostic #endif /* LIBC_SCCS and not lint */ 1135457Sbostic 1235457Sbostic #include <sys/types.h> 1335457Sbostic #include <sys/time.h> 14*54586Sbostic 15*54586Sbostic #include <fcntl.h> 1635457Sbostic #include <utmp.h> 17*54586Sbostic #include <unistd.h> 18*54586Sbostic #include <stdlib.h> 19*54586Sbostic #include <string.h> 2035457Sbostic 2139179Sbostic typedef struct utmp UTMP; 2236826Sbostic 23*54586Sbostic int 2435457Sbostic logout(line) 2535457Sbostic register char *line; 2635457Sbostic { 2739179Sbostic register int fd; 2839179Sbostic UTMP ut; 2935457Sbostic int rval; 3035457Sbostic 31*54586Sbostic if ((fd = open(_PATH_UTMP, O_RDWR, 0)) < 0) 3235457Sbostic return(0); 3336826Sbostic rval = 0; 34*54586Sbostic 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); 40*54586Sbostic (void)lseek(fd, -(off_t)sizeof(UTMP), L_INCR); 41*54586Sbostic (void)write(fd, &ut, sizeof(UTMP)); 4236826Sbostic rval = 1; 4335457Sbostic } 4439179Sbostic (void)close(fd); 4535457Sbostic return(rval); 4635457Sbostic } 47