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 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