2 * Copyright (c) 1988 The Regents of the University of California.
5 * Redistribution and use in source and binary forms are permitted
6 * provided that the above copyright notice and this paragraph are
7 * duplicated in all such forms and that any documentation,
8 * advertising materials, and other materials related to such
9 * distribution and use acknowledge that the software was developed
10 * by the University of California, Berkeley. The name of the
11 * University may not be used to endorse or promote products derived
12 * from this software without specific prior written permission.
13 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
14 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
15 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
18 #include <afsconfig.h>
19 #include <afs/param.h>
24 #include <sys/types.h>
28 #define L_INCR SEEK_CUR
37 #define L_INCR SEEK_CUR
40 #define UTMPFILE "/etc/utmp"
42 /* 0 on failure, 1 on success */
51 if (!(fp = fopen(UTMPFILE, "r+")))
54 while (fread((char *)&ut, sizeof(struct utmp), 1, fp) == 1) {
55 if (!ut.ut_name[0] || strncmp(ut.ut_line, line, sizeof(ut.ut_line)))
57 memset(ut.ut_name, 0, sizeof(ut.ut_name));
58 #if !defined(AIX) && !defined(AFS_SUN5_ENV)
59 memset(ut.ut_host, 0, sizeof(ut.ut_host));
61 (void)time(&ut.ut_time);
62 (void)fseek(fp, (long)-sizeof(struct utmp), L_INCR);
63 (void)fwrite((char *)&ut, sizeof(struct utmp), 1, fp);
64 (void)fseek(fp, (long)0, L_INCR);