70 lines
1.8 KiB
C++
70 lines
1.8 KiB
C++
/*
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* Copyright 2021 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "gd/os/syslog.h"
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#include <syslog.h>
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#include <cstdarg>
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#include <memory>
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namespace {
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#define SYSLOG_IDENT "btadapterd"
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const char kSyslogIdent[] = SYSLOG_IDENT;
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// Map LOG_TAG_* to syslog mappings
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const int kTagMap[] = {
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/*LOG_TAG_VERBOSE=*/LOG_DEBUG,
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/*LOG_TAG_DEBUG=*/LOG_DEBUG,
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/*LOG_TAG_INFO=*/LOG_INFO,
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/*LOG_TAG_WARN=*/LOG_WARNING,
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/*LOG_TAG_ERROR=*/LOG_ERR,
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/*LOG_TAG_FATAL=*/LOG_CRIT,
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};
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static_assert(sizeof(kTagMap) / sizeof(kTagMap[0]) == LOG_TAG_FATAL + 1);
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class SyslogWrapper {
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public:
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SyslogWrapper() {
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openlog(kSyslogIdent, LOG_CONS | LOG_NDELAY | LOG_PID | LOG_PERROR, LOG_DAEMON);
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}
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~SyslogWrapper() {
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closelog();
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}
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};
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std::unique_ptr<SyslogWrapper> gSyslog;
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} // namespace
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void write_syslog(int tag, const char* format, ...) {
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if (!gSyslog) {
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gSyslog = std::make_unique<SyslogWrapper>();
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}
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// I don't expect to see incorrect tags but making the check anyway so we
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// don't go out of bounds in the array above.
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tag = tag <= LOG_TAG_FATAL ? tag : LOG_TAG_ERROR;
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int level = kTagMap[tag];
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va_list args;
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va_start(args, format);
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vsyslog(level, format, args);
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va_end(args);
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}
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