1 /* 2 * Copyright (c) 2005 The DragonFly Project. All rights reserved. 3 * 4 * This code is derived from software contributed to The DragonFly Project 5 * by Matthew Dillon <dillon@backplane.com> 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 * 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in 15 * the documentation and/or other materials provided with the 16 * distribution. 17 * 3. Neither the name of The DragonFly Project nor the names of its 18 * contributors may be used to endorse or promote products derived 19 * from this software without specific, prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 22 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 24 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 25 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 26 * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING, 27 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 28 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 29 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 30 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 31 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 * 34 * $DragonFly: src/usr.sbin/dntpd/log.c,v 1.3 2005/04/25 20:50:59 dillon Exp $ 35 */ 36 37 #include "defs.h" 38 39 static void vlogline(int level, int newline, const char *ctl, va_list va); 40 41 int log_stderr = 1; 42 43 void 44 logerr(const char *ctl, ...) 45 { 46 int saved_errno; 47 va_list va; 48 49 saved_errno = errno; 50 va_start(va, ctl); 51 vlogline(0, 0, ctl, va); 52 logerrstr(": %s", strerror(saved_errno)); 53 va_end(va); 54 55 } 56 57 void 58 logerrstr(const char *ctl, ...) 59 { 60 va_list va; 61 62 va_start(va, ctl); 63 vlogline(0, 1, ctl, va); 64 va_end(va); 65 } 66 67 /* 68 * logdebug() does not add the '\n', allowing multiple calls to generate 69 * a debugging log line. The buffer is accumulated until a newline is 70 * detected, then syslogged. 71 */ 72 void 73 _logdebug(int level, const char *ctl, ...) 74 { 75 va_list va; 76 77 if (level <= debug_level) { 78 va_start(va, ctl); 79 vlogline(level, 0, ctl, va); 80 va_end(va); 81 } 82 } 83 84 static void 85 vlogline(int level, int newline, const char *ctl, va_list va) 86 { 87 static char line_build[1024]; 88 static int line_index; 89 int priority; 90 91 /* 92 * Output to stderr directly but build the log line for syslog. 93 */ 94 if (level <= debug_level) { 95 if (log_stderr) { 96 vfprintf(stderr, ctl, va); 97 if (newline) 98 fprintf(stderr, "\n"); 99 fflush(stderr); 100 } 101 if (debug_opt == 0) { 102 vsnprintf(line_build + line_index, sizeof(line_build) - line_index, 103 ctl, va); 104 line_index += strlen(line_build + line_index); 105 if (line_index && line_build[line_index-1] == '\n') { 106 newline = 1; 107 --line_index; 108 } 109 if (newline) { 110 switch(level) { 111 case 0: 112 case 1: 113 case 2: 114 priority = LOG_NOTICE; 115 break; 116 case 3: 117 priority = LOG_INFO; 118 break; 119 default: 120 priority = LOG_DEBUG; 121 break; 122 } 123 syslog(priority, "%*.*s", line_index, line_index, line_build); 124 line_index = 0; 125 } 126 } 127 } 128 } 129 130