util.h

/* $Id$ */
/*
 * Copyright (c) 2012 KAMADA Ken'ichi.
 * All rights reserved.
 *
 * 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 AUTHOR 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 AUTHOR 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 LERR(...)	syslog(LOG_ERR, __VA_ARGS__)
#define LNOTICE(...)	syslog(LOG_NOTICE, __VA_ARGS__)
#define LINFO(...)	syslog(LOG_INFO, __VA_ARGS__)
#define LDEBUG(...)	do {						\
		if (options.debug > 0) {				\
			fprintf(stderr, __VA_ARGS__);			\
			fprintf(stderr, "\n");				\
		}							\
	} while (0 /* CONSTCOND */)

#define lengthof(array)		(sizeof(array) / sizeof((array)[0]))

struct pidfile {
	int fd;
	int dirfd;
	const char *name;
	char path[];
};

int run_as(const char *user);
struct pidfile *make_pidfile(const char *myname);
int write_pidfile(struct pidfile *pf);
void cleanup_pidfile(struct pidfile *pf);