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Annotation of src/lib/libutil/logwtmp.c, Revision 1.3

1.1       cgd         1: /*
1.3     ! cgd         2:  * Copyright (c) 1988, 1993
        !             3:  *     The Regents of the University of California.  All rights reserved.
1.1       cgd         4:  *
                      5:  * Redistribution and use in source and binary forms, with or without
                      6:  * modification, are permitted provided that the following conditions
                      7:  * are met:
                      8:  * 1. Redistributions of source code must retain the above copyright
                      9:  *    notice, this list of conditions and the following disclaimer.
                     10:  * 2. Redistributions in binary form must reproduce the above copyright
                     11:  *    notice, this list of conditions and the following disclaimer in the
                     12:  *    documentation and/or other materials provided with the distribution.
                     13:  * 3. All advertising materials mentioning features or use of this software
                     14:  *    must display the following acknowledgement:
                     15:  *     This product includes software developed by the University of
                     16:  *     California, Berkeley and its contributors.
                     17:  * 4. Neither the name of the University nor the names of its contributors
                     18:  *    may be used to endorse or promote products derived from this software
                     19:  *    without specific prior written permission.
                     20:  *
                     21:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
                     22:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
                     23:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
                     24:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
                     25:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
                     26:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
                     27:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
                     28:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
                     29:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
                     30:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
                     31:  * SUCH DAMAGE.
                     32:  */
                     33:
                     34: #if defined(LIBC_SCCS) && !defined(lint)
1.3     ! cgd        35: /* from: static char sccsid[] = "@(#)logwtmp.c 8.1 (Berkeley) 6/4/93"; */
        !            36: static char *rcsid = "$Id$";
1.1       cgd        37: #endif /* LIBC_SCCS and not lint */
                     38:
                     39: #include <sys/types.h>
                     40: #include <sys/file.h>
                     41: #include <sys/time.h>
                     42: #include <sys/stat.h>
1.3     ! cgd        43:
        !            44: #include <unistd.h>
1.1       cgd        45: #include <utmp.h>
                     46:
                     47: logwtmp(line, name, host)
                     48:        char *line, *name, *host;
                     49: {
                     50:        struct utmp ut;
                     51:        struct stat buf;
                     52:        int fd;
                     53:        time_t time();
                     54:        char *strncpy();
                     55:
                     56:        if ((fd = open(_PATH_WTMP, O_WRONLY|O_APPEND, 0)) < 0)
                     57:                return;
                     58:        if (fstat(fd, &buf) == 0) {
                     59:                (void) strncpy(ut.ut_line, line, sizeof(ut.ut_line));
                     60:                (void) strncpy(ut.ut_name, name, sizeof(ut.ut_name));
                     61:                (void) strncpy(ut.ut_host, host, sizeof(ut.ut_host));
                     62:                (void) time(&ut.ut_time);
                     63:                if (write(fd, (char *)&ut, sizeof(struct utmp)) !=
                     64:                    sizeof(struct utmp))
                     65:                        (void) ftruncate(fd, buf.st_size);
                     66:        }
                     67:        (void) close(fd);
                     68: }