Differential D22012 Diff 110007 contrib/dhcpcd/src/logerr.h

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contrib/dhcpcd/src/logerr.h

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				/* SPDX-License-Identifier: BSD-2-Clause */
				/*
				* logerr: errx with logging
				* Copyright (c) 2006-2021 Roy Marples <roy@marples.name>
				* 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.
				*/

				#ifndef LOGERR_H
				#define LOGERR_H

				#include <sys/param.h>

				#ifndef __printflike
				#if __GNUC__ > 2 \|\| defined(__INTEL_COMPILER)
				#define __printflike(a, b) __attribute__((format(printf, a, b)))
				#else
				#define __printflike(a, b)
				#endif
				#endif /* !__printflike */

				/* Please do not call log_* functions directly, use macros below */
				__printflike(1, 2) void log_debug(const char *, ...);
				__printflike(1, 2) void log_debugx(const char *, ...);
				__printflike(1, 2) void log_info(const char *, ...);
				__printflike(1, 2) void log_infox(const char *, ...);
				__printflike(1, 2) void log_warn(const char *, ...);
				__printflike(1, 2) void log_warnx(const char *, ...);
				__printflike(1, 2) void log_err(const char *, ...);
				__printflike(1, 2) void log_errx(const char *, ...);
				#define LOGERROR logerr("%s: %d", __FILE__, __LINE__)

				__printflike(2, 3) void logmessage(int pri, const char *fmt, ...);
				__printflike(2, 3) void logerrmessage(int pri, const char *fmt, ...);

				/*
				* These are macros to prevent taking address of them so
				* __FILE__, __LINE__, etc can easily be added.
				*
				* We should be using
				* #define loginfox(fmt, __VA_OPT__(,) __VA_ARGS__)
				* but that requires gcc-8 or clang-6 and we still have a need to support
				* old OS's without modern compilers.
				*
				* Likewise, ##__VA_ARGS__ can't be used as that's a gcc only extension.
				*
				* The solution is to put fmt into __VA_ARGS__.
				* It's not pretty but it's 100% portable.
				*/
				#define logdebug(...) log_debug(__VA_ARGS__)
				#define logdebugx(...) log_debugx(__VA_ARGS__)
				#define loginfo(...) log_info(__VA_ARGS__)
				#define loginfox(...) log_infox(__VA_ARGS__)
				#define logwarn(...) log_warn(__VA_ARGS__)
				#define logwarnx(...) log_warnx(__VA_ARGS__)
				#define logerr(...) log_err(__VA_ARGS__)
				#define logerrx(...) log_errx(__VA_ARGS__)

				/* For logging in a chroot */
				int loggetfd(void);
				void logsetfd(int);
				int logreadfd(int);

				unsigned int loggetopts(void);
				void logsetopts(unsigned int);
				#define LOGERR_DEBUG (1U << 6)
				#define LOGERR_QUIET (1U << 7)
				#define LOGERR_LOG (1U << 11)
				#define LOGERR_LOG_DATE (1U << 12)
				#define LOGERR_LOG_HOST (1U << 13)
				#define LOGERR_LOG_TAG (1U << 14)
				#define LOGERR_LOG_PID (1U << 15)
				#define LOGERR_ERR (1U << 21)
				#define LOGERR_ERR_DATE (1U << 22)
				#define LOGERR_ERR_HOST (1U << 23)
				#define LOGERR_ERR_TAG (1U << 24)
				#define LOGERR_ERR_PID (1U << 25)

				/* To build tag support or not. */
				//#define LOGERR_TAG
				#if defined(LOGERR_TAG)
				void logsettag(const char *);
				#endif

				/* Can be called more than once. */
				int logopen(const char *);

				/* Should only be called at program exit. */
				void logclose(void);

				#endif