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/*
* Copyright 2021 The Android Open Source Project
*
* Licensed 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.
*/
#include "gd/os/syslog.h"
#include <syslog.h>
#include <cstdarg>
#include <memory>
namespace {
#define SYSLOG_IDENT "btadapterd"
const char kSyslogIdent[] = SYSLOG_IDENT;
// Map LOG_TAG_* to syslog mappings
const int kTagMap[] = {
/*LOG_TAG_VERBOSE=*/LOG_DEBUG,
/*LOG_TAG_DEBUG=*/LOG_DEBUG,
/*LOG_TAG_INFO=*/LOG_INFO,
/*LOG_TAG_WARN=*/LOG_WARNING,
/*LOG_TAG_ERROR=*/LOG_ERR,
/*LOG_TAG_FATAL=*/LOG_CRIT,
};
static_assert(sizeof(kTagMap) / sizeof(kTagMap[0]) == LOG_TAG_FATAL + 1);
class SyslogWrapper {
public:
SyslogWrapper() {
openlog(kSyslogIdent, LOG_CONS | LOG_NDELAY | LOG_PID | LOG_PERROR, LOG_DAEMON);
}
~SyslogWrapper() {
closelog();
}
};
std::unique_ptr<SyslogWrapper> gSyslog;
} // namespace
void write_syslog(int tag, const char* format, ...) {
if (!gSyslog) {
gSyslog = std::make_unique<SyslogWrapper>();
}
// I don't expect to see incorrect tags but making the check anyway so we
// don't go out of bounds in the array above.
tag = tag <= LOG_TAG_FATAL ? tag : LOG_TAG_ERROR;
int level = kTagMap[tag];
va_list args;
va_start(args, format);
vsyslog(level, format, args);
va_end(args);
}
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