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