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https://github.com/freebsd/freebsd-src
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134e17798c
Approved by: trasz MFC after: 1 month Sponsored by: Conclusive Engineering (development), vStack.com (funding)
68 lines
2.0 KiB
C
68 lines
2.0 KiB
C
/*
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* Copyright 2016 Jakub Klama <jceel@FreeBSD.org>
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* All rights reserved
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted providing that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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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 <string.h>
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#include "log.h"
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static const char *l9p_log_level_names[] = {
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"DEBUG",
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"INFO",
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"WARN",
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"ERROR"
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};
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void
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l9p_logf(enum l9p_log_level level, const char *func, const char *fmt, ...)
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{
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const char *dest = NULL;
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static FILE *stream = NULL;
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va_list ap;
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if (stream == NULL) {
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dest = getenv("LIB9P_LOGGING");
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if (dest == NULL)
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return;
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else if (!strcmp(dest, "stderr"))
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stream = stderr;
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else {
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stream = fopen(dest, "a");
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if (stream == NULL)
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return;
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}
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}
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va_start(ap, fmt);
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fprintf(stream, "[%s]\t %s: ", l9p_log_level_names[level], func);
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vfprintf(stream, fmt, ap);
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fprintf(stream, "\n");
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fflush(stream);
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va_end(ap);
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}
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