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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 | |||||