/*      $NetBSD: syslog_private.h,v 1.4 2022/04/19 20:32:15 rillig Exp $        */

/*-
* Copyright (c) 2016 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Christos Zoulas.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
*    notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
*    notice, this list of conditions and the following disclaimer in the
*    documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/

#define DEC()                                                   \
       do {                                                    \
               if (prlen >= tbuf_left)                         \
                       prlen = tbuf_left - 1;                  \
               p += prlen;                                     \
               tbuf_left -= prlen;                             \
       } while (0)

struct syslog_fun {
       size_t (*timefun)(char *, size_t);
       int  (*errfun)(int, char *, size_t);
       int __sysloglike(3, 0) (*prfun)(char *, size_t, const char *, va_list);
       int (*lock)(const struct syslog_data *);
       int (*unlock)(const struct syslog_data *);
};

void _vxsyslogp_r(int, struct syslog_fun *, struct syslog_data *,
   const char *, const char *, const char *, va_list) __sysloglike(6, 0);
void _openlog_unlocked_r(const char *, int, int, struct syslog_data *);
void _closelog_unlocked_r(struct syslog_data *);

extern struct syslog_fun _syslog_ss_fun;