1 /* 2 * Copyright (c) 1988 The Regents of the University of California. 3 * All rights reserved. 4 * 5 * %sccs.include.redist.c% 6 * 7 */ 8 9 #ifndef lint 10 static char sccsid[] = "@(#)logwtmp.c 5.6 (Berkeley) 06/01/90"; 11 #endif /* not lint */ 12 13 #include <sys/types.h> 14 #include <sys/file.h> 15 #include <sys/time.h> 16 #include <sys/stat.h> 17 #include <utmp.h> 18 19 static int fd = -1; 20 21 /* 22 * Modified version of logwtmp that holds wtmp file open 23 * after first call, for use with ftp (which may chroot 24 * after login, but before logout). 25 */ 26 logwtmp(line, name, host) 27 char *line, *name, *host; 28 { 29 struct utmp ut; 30 struct stat buf; 31 time_t time(); 32 char *strncpy(); 33 34 if (fd < 0 && (fd = open(_PATH_WTMP, O_WRONLY|O_APPEND, 0)) < 0) 35 return; 36 if (fstat(fd, &buf) == 0) { 37 (void)strncpy(ut.ut_line, line, sizeof(ut.ut_line)); 38 (void)strncpy(ut.ut_name, name, sizeof(ut.ut_name)); 39 (void)strncpy(ut.ut_host, host, sizeof(ut.ut_host)); 40 (void)time(&ut.ut_time); 41 if (write(fd, (char *)&ut, sizeof(struct utmp)) != 42 sizeof(struct utmp)) 43 (void)ftruncate(fd, buf.st_size); 44 } 45 } 46