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/*
* Copyright (C) 2021 SUSE LLC
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License version
* 2 as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
*
* This file implements basic logging functionality.
*/
#include <sys/types.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include <stdbool.h>
#include <syslog.h>
#include <unistd.h>
#include <time.h>
#define LOG_FUNCNAME 1
#include "log.h"
#include "cleanup.h"
#ifndef LOG_CLOCK
#define LOG_CLOCK CLOCK_MONOTONIC
#endif
int log_level = DEFAULT_LOGLEVEL;
bool log_timestamp;
bool log_pid;
void __attribute__((format(printf, 3, 4)))
__msg(int lvl, const char *func, const char *format, ...)
{
va_list ap;
char pidbuf[16];
char timebuf[32];
static const char *const formats[] = {
"%s%s%s",
"%s%s%s: ",
"%s<%s>%s ",
"%s<%s> %s: ",
"[%s] %s%s ",
"[%s]%s %s: ",
"[%s] <%s>%s ",
"[%s] <%s> %s: ",
};
char *header __cleanup__(cleanup_charp) = NULL;
char *message __cleanup__(cleanup_charp) = NULL;
int idx;
if (lvl > log_level)
return;
if (log_timestamp) {
struct timespec now;
clock_gettime(LOG_CLOCK, &now);
snprintf(timebuf, sizeof(timebuf), "%6ld.%06ld",
(long)now.tv_sec, now.tv_nsec / 1000);
} else
*timebuf = '\0';
if (log_pid)
snprintf(pidbuf, sizeof(pidbuf), "%ld", (long)getpid());
else
*pidbuf = '\0';
idx = ((log_timestamp ? 1 : 0) << 2) |
((log_pid ? 1 : 0) << 1) | (func ? 1 : 0);
if (asprintf(&header, formats[idx], timebuf, pidbuf, func ? func : "")
== -1)
header = NULL;
va_start(ap, format);
if (vasprintf(&message, format, ap) == -1)
message = NULL;
va_end(ap);
fprintf(stderr, "%s%s", header ? header : "<error>",
message ? message : "<error>");
}
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