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 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. 16 */ 17 18 #if defined(LIBC_SCCS) && !defined(lint) 19 static char sccsid[] = "@(#)logwtmp.c 5.2 (Berkeley) 09/20/88"; 20 #endif /* LIBC_SCCS and not lint */ 21 22 #include <sys/types.h> 23 #include <sys/file.h> 24 #include <sys/time.h> 25 #include <sys/stat.h> 26 #include <utmp.h> 27 28 #define WTMPFILE "/usr/adm/wtmp" 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(WTMPFILE, O_WRONLY|O_APPEND, 0)) < 0) 40 return; 41 if (!fstat(fd, &buf)) { 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 } 52