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Annotation of 43BSDReno/lib/libutil/logwtmp.c, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1988 The Regents of the University of California.
        !             3:  * All rights reserved.
        !             4:  *
        !             5:  * Redistribution and use in source and binary forms are permitted
        !             6:  * provided that: (1) source distributions retain this entire copyright
        !             7:  * notice and comment, and (2) distributions including binaries display
        !             8:  * the following acknowledgement:  ``This product includes software
        !             9:  * developed by the University of California, Berkeley and its contributors''
        !            10:  * in the documentation or other materials provided with the distribution
        !            11:  * and in all advertising materials mentioning features or use of this
        !            12:  * software. Neither the name of the University nor the names of its
        !            13:  * contributors may be used to endorse or promote products derived
        !            14:  * from this software without specific prior written permission.
        !            15:  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
        !            16:  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
        !            17:  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
        !            18:  */
        !            19: 
        !            20: #if defined(LIBC_SCCS) && !defined(lint)
        !            21: static char sccsid[] = "@(#)logwtmp.c  5.5 (Berkeley) 6/1/90";
        !            22: #endif /* LIBC_SCCS and not lint */
        !            23: 
        !            24: #include <sys/types.h>
        !            25: #include <sys/file.h>
        !            26: #include <sys/time.h>
        !            27: #include <sys/stat.h>
        !            28: #include <utmp.h>
        !            29: 
        !            30: logwtmp(line, name, host)
        !            31:        char *line, *name, *host;
        !            32: {
        !            33:        struct utmp ut;
        !            34:        struct stat buf;
        !            35:        int fd;
        !            36:        time_t time();
        !            37:        char *strncpy();
        !            38: 
        !            39:        if ((fd = open(_PATH_WTMP, O_WRONLY|O_APPEND, 0)) < 0)
        !            40:                return;
        !            41:        if (fstat(fd, &buf) == 0) {
        !            42:                (void) strncpy(ut.ut_line, line, sizeof(ut.ut_line));
        !            43:                (void) strncpy(ut.ut_name, name, sizeof(ut.ut_name));
        !            44:                (void) strncpy(ut.ut_host, host, sizeof(ut.ut_host));
        !            45:                (void) time(&ut.ut_time);
        !            46:                if (write(fd, (char *)&ut, sizeof(struct utmp)) !=
        !            47:                    sizeof(struct utmp))
        !            48:                        (void) ftruncate(fd, buf.st_size);
        !            49:        }
        !            50:        (void) close(fd);
        !            51: }

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