/**************************************************************************** * drivers/syslog/vsyslog.c * * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. The * ASF licenses this file to you under the Apache License, Version 2.0 (the * "License"); you may not use this file except in compliance with the * License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the * License for the specific language governing permissions and limitations * under the License. * ****************************************************************************/ /**************************************************************************** * Included Files ****************************************************************************/ #include #include #include #include #include #include #include #include #include "syslog.h" /**************************************************************************** * Private Data ****************************************************************************/ #if defined(CONFIG_SYSLOG_PRIORITY) static FAR const char * g_priority_str[] = { "EMERG", "ALERT", "CRIT", "ERROR", "WARN", "NOTICE", "INFO", "DEBUG" }; #endif /**************************************************************************** * Public Functions ****************************************************************************/ /**************************************************************************** * Name: nx_vsyslog * * Description: * nx_vsyslog() handles the system logging system calls. It is functionally * equivalent to vsyslog() except that (1) the per-process priority * filtering has already been performed and the va_list parameter is * passed by reference. That is because the va_list is a structure in * some compilers and passing of structures in the NuttX sycalls does * not work. * ****************************************************************************/ int nx_vsyslog(int priority, FAR const IPTR char *fmt, FAR va_list *ap) { struct lib_syslogstream_s stream; int ret = 0; #if CONFIG_TASK_NAME_SIZE > 0 && defined(CONFIG_SYSLOG_PROCESS_NAME) struct tcb_s *tcb; #endif #ifdef CONFIG_SYSLOG_TIMESTAMP struct timespec ts; #if defined(CONFIG_SYSLOG_TIMESTAMP_FORMATTED) struct tm tm; char date_buf[CONFIG_SYSLOG_TIMESTAMP_BUFFER]; #endif #endif /* Wrap the low-level output in a stream object and let lib_vsprintf * do the work. */ syslogstream_create(&stream); #ifdef CONFIG_SYSLOG_TIMESTAMP ts.tv_sec = 0; ts.tv_nsec = 0; #if defined(CONFIG_SYSLOG_TIMESTAMP_FORMATTED) memset(&tm, 0, sizeof(tm)); #endif /* Get the current time. Since debug output may be generated very early * in the start-up sequence, hardware timer support may not yet be * available. */ if (OSINIT_HW_READY()) { #if defined(CONFIG_SYSLOG_TIMESTAMP_REALTIME) /* Use CLOCK_REALTIME if so configured */ clock_gettime(CLOCK_REALTIME, &ts); #else /* Prefer monotonic when enabled, as it can be synchronized to * RTC with clock_resynchronize. */ clock_gettime(CLOCK_MONOTONIC, &ts); #endif /* Prepend the message with the current time, if available */ #if defined(CONFIG_SYSLOG_TIMESTAMP_FORMATTED) #if defined(CONFIG_SYSLOG_TIMESTAMP_LOCALTIME) localtime_r(&ts.tv_sec, &tm); #else gmtime_r(&ts.tv_sec, &tm); #endif #endif } #if defined(CONFIG_SYSLOG_TIMESTAMP_FORMATTED) ret = strftime(date_buf, CONFIG_SYSLOG_TIMESTAMP_BUFFER, CONFIG_SYSLOG_TIMESTAMP_FORMAT, &tm); if (ret > 0) { #if defined(CONFIG_SYSLOG_TIMESTAMP_FORMAT_MICROSECOND) ret = lib_sprintf(&stream.public, "[%s.%06ld] ", date_buf, ts.tv_nsec / NSEC_PER_USEC); #else ret = lib_sprintf(&stream.public, "[%s] ", date_buf); #endif } #else ret = lib_sprintf(&stream.public, "[%5jd.%06ld] ", (uintmax_t)ts.tv_sec, ts.tv_nsec / NSEC_PER_USEC); #endif #endif #if defined(CONFIG_SMP) ret += lib_sprintf(&stream.public, "[CPU%d] ", up_cpu_index()); #endif #if defined(CONFIG_SYSLOG_PROCESSID) /* Prepend the Process ID */ ret += lib_sprintf(&stream.public, "[%2d] ", (int)getpid()); #endif #if defined(CONFIG_SYSLOG_COLOR_OUTPUT) /* Set the terminal style according to message priority. */ switch (priority) { case LOG_EMERG: /* Red, Bold, Blinking */ ret += lib_sprintf(&stream.public, "\e[31;1;5m"); break; case LOG_ALERT: /* Red, Bold */ ret += lib_sprintf(&stream.public, "\e[31;1m"); break; case LOG_CRIT: /* Red, Bold */ ret += lib_sprintf(&stream.public, "\e[31;1m"); break; case LOG_ERR: /* Red */ ret += lib_sprintf(&stream.public, "\e[31m"); break; case LOG_WARNING: /* Yellow */ ret += lib_sprintf(&stream.public, "\e[33m"); break; case LOG_NOTICE: /* Bold */ ret += lib_sprintf(&stream.public, "\e[1m"); break; case LOG_INFO: /* Normal */ break; case LOG_DEBUG: /* Dim */ ret += lib_sprintf(&stream.public, "\e[2m"); break; } #endif #if defined(CONFIG_SYSLOG_PRIORITY) /* Prepend the message priority. */ ret += lib_sprintf(&stream.public, "[%6s] ", g_priority_str[priority]); #endif #if defined(CONFIG_SYSLOG_PREFIX) /* Prepend the prefix, if available */ ret += lib_sprintf(&stream.public, "[%s] ", CONFIG_SYSLOG_PREFIX_STRING); #endif #if CONFIG_TASK_NAME_SIZE > 0 && defined(CONFIG_SYSLOG_PROCESS_NAME) /* Prepend the process name */ tcb = nxsched_get_tcb(getpid()); ret += lib_sprintf(&stream.public, "%s: ", (tcb != NULL) ? tcb->name : "(null)"); #endif /* Generate the output */ ret += lib_vsprintf(&stream.public, fmt, *ap); #if defined(CONFIG_SYSLOG_COLOR_OUTPUT) /* Reset the terminal style back to normal. */ ret += lib_sprintf(&stream.public, "\e[0m"); #endif #ifdef CONFIG_SYSLOG_BUFFER /* Flush and destroy the syslog stream buffer */ syslogstream_destroy(&stream); #endif return ret; }