1 /* $NetBSD: logwtmp.c,v 1.12 2002/07/27 23:49:23 christos Exp $ */ 2 3 /* 4 * Copyright (c) 1988, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the University of 18 * California, Berkeley and its contributors. 19 * 4. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36 #include <sys/cdefs.h> 37 #if defined(LIBC_SCCS) && !defined(lint) 38 #if 0 39 static char sccsid[] = "@(#)logwtmp.c 8.1 (Berkeley) 6/4/93"; 40 #else 41 __RCSID("$NetBSD: logwtmp.c,v 1.12 2002/07/27 23:49:23 christos Exp $"); 42 #endif 43 #endif /* LIBC_SCCS and not lint */ 44 45 #include <sys/types.h> 46 #include <sys/file.h> 47 #include <sys/time.h> 48 #include <sys/stat.h> 49 #include <sys/wait.h> 50 51 #include <assert.h> 52 #include <string.h> 53 #include <time.h> 54 #include <unistd.h> 55 #include <utmp.h> 56 #include <utmpx.h> 57 #include <util.h> 58 59 void 60 logwtmp(const char *line, const char *name, const char *host) 61 { 62 struct utmp ut; 63 struct stat buf; 64 int fd; 65 66 _DIAGASSERT(line != NULL); 67 _DIAGASSERT(name != NULL); 68 _DIAGASSERT(host != NULL); 69 70 if ((fd = open(_PATH_WTMP, O_WRONLY|O_APPEND, 0)) < 0) 71 return; 72 if (fstat(fd, &buf) == 0) { 73 (void) strncpy(ut.ut_line, line, sizeof(ut.ut_line)); 74 (void) strncpy(ut.ut_name, name, sizeof(ut.ut_name)); 75 (void) strncpy(ut.ut_host, host, sizeof(ut.ut_host)); 76 (void) time(&ut.ut_time); 77 if (write(fd, &ut, sizeof(struct utmp)) != sizeof(struct utmp)) 78 (void) ftruncate(fd, buf.st_size); 79 } 80 (void) close(fd); 81 } 82 83 void 84 logwtmpx(const char *line, const char *name, const char *host, int status, 85 int type) 86 { 87 struct utmpx ut; 88 89 _DIAGASSERT(line != NULL); 90 _DIAGASSERT(name != NULL); 91 _DIAGASSERT(host != NULL); 92 93 (void)memset(&ut, 0, sizeof(ut)); 94 (void)strncpy(ut.ut_line, line, sizeof(ut.ut_line)); 95 (void)strncpy(ut.ut_name, name, sizeof(ut.ut_name)); 96 (void)strncpy(ut.ut_host, host, sizeof(ut.ut_host)); 97 ut.ut_type = type; 98 if (WIFEXITED(status)) 99 ut.ut_exit.e_exit = (uint16_t)WEXITSTATUS(status); 100 if (WIFSIGNALED(status)) 101 ut.ut_exit.e_termination = (uint16_t)WTERMSIG(status); 102 (void)gettimeofday(&ut.ut_tv, NULL); 103 (void)updwtmpx(_PATH_WTMPX, &ut); 104 } 105