1 /*
2 * Copyright (c) 1988, 1993
3 * The Regents of the University of California. All rights reserved.
4 *
5 * %sccs.include.redist.c%
6 */
7
8 #if defined(LIBC_SCCS) && !defined(lint)
9 static char sccsid[] = "@(#)logwtmp.c 8.1 (Berkeley) 06/04/93";
10 #endif /* LIBC_SCCS and not lint */
11
12 #include <sys/types.h>
13 #include <sys/file.h>
14 #include <sys/time.h>
15 #include <sys/stat.h>
16
17 #include <unistd.h>
18 #include <utmp.h>
19
logwtmp(line,name,host)20 logwtmp(line, name, host)
21 char *line, *name, *host;
22 {
23 struct utmp ut;
24 struct stat buf;
25 int fd;
26 time_t time();
27 char *strncpy();
28
29 if ((fd = open(_PATH_WTMP, O_WRONLY|O_APPEND, 0)) < 0)
30 return;
31 if (fstat(fd, &buf) == 0) {
32 (void) strncpy(ut.ut_line, line, sizeof(ut.ut_line));
33 (void) strncpy(ut.ut_name, name, sizeof(ut.ut_name));
34 (void) strncpy(ut.ut_host, host, sizeof(ut.ut_host));
35 (void) time(&ut.ut_time);
36 if (write(fd, (char *)&ut, sizeof(struct utmp)) !=
37 sizeof(struct utmp))
38 (void) ftruncate(fd, buf.st_size);
39 }
40 (void) close(fd);
41 }
42