1 /* $OpenBSD: syslog.c,v 1.31 2011/05/30 18:48:33 martynas Exp $ */ 2 /* 3 * Copyright (c) 1983, 1988, 1993 4 * The Regents of the University of California. All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. Neither the name of the University nor the names of its contributors 15 * may be used to endorse or promote products derived from this software 16 * without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 */ 30 31 #include <sys/types.h> 32 #include <sys/socket.h> 33 #include <sys/syslog.h> 34 #include <sys/uio.h> 35 #include <sys/un.h> 36 #include <netdb.h> 37 38 #include <errno.h> 39 #include <fcntl.h> 40 #include <paths.h> 41 #include <stdio.h> 42 #include <string.h> 43 #include <time.h> 44 #include <unistd.h> 45 #include <stdarg.h> 46 47 static struct syslog_data sdata = SYSLOG_DATA_INIT; 48 49 void __vsyslog_r(int pri, struct syslog_data *, size_t (*)(char *, size_t), 50 const char *, va_list); 51 52 static size_t 53 gettime(char *buf, size_t maxsize) 54 { 55 time_t now; 56 57 (void)time(&now); 58 return (strftime(buf, maxsize, "%h %e %T ", localtime(&now))); 59 } 60 61 62 /* 63 * syslog, vsyslog -- 64 * print message on log file; output is intended for syslogd(8). 65 */ 66 /* PRINTFLIKE2 */ 67 void 68 syslog(int pri, const char *fmt, ...) 69 { 70 va_list ap; 71 72 va_start(ap, fmt); 73 vsyslog(pri, fmt, ap); 74 va_end(ap); 75 } 76 77 void 78 vsyslog(int pri, const char *fmt, va_list ap) 79 { 80 __vsyslog_r(pri, &sdata, &gettime, fmt, ap); 81 } 82 83 void 84 openlog(const char *ident, int logstat, int logfac) 85 { 86 openlog_r(ident, logstat, logfac, &sdata); 87 } 88 89 void 90 closelog(void) 91 { 92 closelog_r(&sdata); 93 } 94 95 /* setlogmask -- set the log mask level */ 96 int 97 setlogmask(int pmask) 98 { 99 return setlogmask_r(pmask, &sdata); 100 } 101 102 /* setlogmask -- set the log mask level */ 103 int 104 setlogmask_r(int pmask, struct syslog_data *data) 105 { 106 int omask; 107 108 omask = data->log_mask; 109 if (pmask != 0) 110 data->log_mask = pmask; 111 return (omask); 112 } 113