/*

  FUSE: Filesystem in Userspace

  Copyright (C) 2019  Red Hat, Inc.

  Logging API.

  This program can be distributed under the terms of the GNU LGPLv2.

  See the file LGPL2.txt

*/

#include "fuse_log.h"

#include <stdio.h>

#include <stdbool.h>

#include <syslog.h>

#include <stdarg.h>

#define MAX_SYSLOG_LINE_LEN 512

static bool to_syslog = false;

static void default_log_func(enum fuse_log_level level, const char *fmt, va_list ap)

{

  if (to_syslog)

    vsyslog(level, fmt, ap);

  else

    vfprintf(stderr, fmt, ap);

}

static fuse_log_func_t log_func = default_log_func;

void fuse_set_log_func(fuse_log_func_t func)

{

  if (!func)

    func = default_log_func;

  log_func = func;

}

void fuse_log(enum fuse_log_level level, const char *fmt, ...)

{

  va_list ap;

  va_start(ap, fmt);

  log_func(level, fmt, ap);

  va_end(ap);

}

void fuse_log_enable_syslog(const char *ident, int option, int facility)

{

  to_syslog = true;

  openlog(ident, option, facility);

}

void fuse_log_close_syslog(void)

{

  closelog();

}