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 * static char sccsid[] = "@(#)logwtmp.c 5.2 (Berkeley) 9/20/88"; 18 */ 19 20 #ifndef lint 21 static char sccsid[] = "@(#)logwtmp.c 5.1 (Berkeley) 09/22/88"; 22 #endif /* 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 #define WTMPFILE "/usr/adm/wtmp" 31 32 logwtmp(line, name, host) 33 char *line, *name, *host; 34 { 35 struct utmp ut; 36 struct stat buf; 37 int fd; 38 time_t time(); 39 char *strncpy(); 40 41 if ((fd = open(WTMPFILE, O_WRONLY|O_APPEND, 0)) < 0) 42 return; 43 if (!fstat(fd, &buf)) { 44 (void)strncpy(ut.ut_line, line, sizeof(ut.ut_line)); 45 (void)strncpy(ut.ut_name, name, sizeof(ut.ut_name)); 46 (void)strncpy(ut.ut_host, host, sizeof(ut.ut_host)); 47 (void)time(&ut.ut_time); 48 if (write(fd, (char *)&ut, sizeof(struct utmp)) != 49 sizeof(struct utmp)) 50 (void)ftruncate(fd, buf.st_size); 51 } 52 (void)close(fd); 53 } 54