74 lines
2 KiB
C
74 lines
2 KiB
C
#ifndef lint
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#ifndef NOID
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static char elsieid[] = "@(#)logwtmp.c 7.7";
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/* As received from UCB, with include reordering and OLD_TIME condition. */
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#endif /* !defined NOID */
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#endif /* !defined lint */
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/*
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* Copyright (c) 1988 The Regents of the University of California.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms are permitted
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* provided that the above copyright notice and this paragraph are
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* duplicated in all such forms and that any documentation,
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* advertising materials, and other materials related to such
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* distribution and use acknowledge that the software was developed
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* by the University of California, Berkeley. The name of the
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* University may not be used to endorse or promote products derived
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* from this software without specific prior written permission.
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
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* WARRANTIES OF MERCHANT[A]BILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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*/
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#ifndef lint
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#ifdef LIBC_SCCS
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static char sccsid[] = "@(#)logwtmp.c 5.2 (Berkeley) 9/20/88";
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#endif /* defined LIBC_SCCS */
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#endif /* !defined lint */
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#include <sys/types.h>
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#include <time.h>
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#include <utmp.h>
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#include <fcntl.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <string.h>
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#ifdef OLD_TIME
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char dummy_to_keep_linker_happy;
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#endif /* defined OLD_TIME */
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#ifndef OLD_TIME
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#include <sys/file.h>
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#include <sys/time.h>
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#include <sys/stat.h>
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#define WTMPFILE "/usr/adm/wtmp"
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void logwtmp( char *line, char *name, char *host)
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{
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struct utmp ut;
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struct stat buf;
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int fd;
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if ((fd = open(WTMPFILE, O_WRONLY|O_APPEND, 0)) < 0)
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return;
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if (!fstat(fd, &buf)) {
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(void)strncpy(ut.ut_line, line, sizeof(ut.ut_line));
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(void)strncpy(ut.ut_name, name, sizeof(ut.ut_name));
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(void)strncpy(ut.ut_host, host, sizeof(ut.ut_host));
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(void)time(&ut.ut_time);
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if (write(fd, (char *)&ut, sizeof(struct utmp)) !=
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sizeof(struct utmp))
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(void)ftruncate(fd, buf.st_size);
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}
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(void)close(fd);
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}
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#endif /* !defined OLD_TIME */
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