glibc/misc/logout.c
Roland McGrath 1d8dc4293f Mon Jan 22 10:40:40 1996 Roland McGrath <roland@churchy.gnu.ai.mit.edu>
* sysdeps/posix/getcwd.c [__GNU_LIBRARY__]: Include unistd.h.

	* io/fts.h (FTSENT): Define fts_compar member with prototype.

	* hurd/hurd.h: Use prototype in getcttyid decl.

	* stdlib/l64a.c: Fix typo in last change.

	* stdlib/drand48-iter.c: Test limits.h macros instead of sizeof
	for determining size of types.
	* stdlib/srand48_r.c: Likewise.

	* misc/utmp.h: Declare login, logout, logwtmp.
	* misc/logout.c: Declare argument as pointer to const.
	* misc/login.c: Likewise.
	* misc/logwtmp.c: Likewise.
	Include time.h, string.h.

	* misc/efgcvt_r.c: Include stdlib.h.

	* io/mknod.c: Include sys/types.h.

	* gmon/sys/gmon.h: Declare monstartup, _mcleanup.

	* csu/gmon-start.c (_start, etext): Declare with prototypes.

	* stdio-common/vfscanf.c (%[): Fix range handling.
1996-01-23 10:00:23 +00:00

73 lines
2.6 KiB
C

/*
* 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);
}