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/****************************************************************************
*
* Copyright (C) 2012 PX4 Development Team. 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.
* 3. Neither the name PX4 nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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
* COPYRIGHT OWNER 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.
*
****************************************************************************/
/**
* @file err.h
*
* Simple error/warning functions, heavily inspired by the BSD functions of
* the same names.
*
* The err() and warn() family of functions display a formatted error
* message on the standard error output. In all cases, the last
* component of the program name, a colon character, and a space are
* output. If the fmt argument is not NULL, the printf(3)-like formatted
* error message is output. The output is terminated by a newline
* character.
*
* The err(), errc(), verr(), verrc(), warn(), warnc(), vwarn(), and
* vwarnc() functions append an error message obtained from strerror(3)
* based on a supplied error code value or the global variable errno,
* preceded by another colon and space unless the fmt argument is NULL.
*
* In the case of the errc(), verrc(), warnc(), and vwarnc() functions,
* the code argument is used to look up the error message.
*
* The err(), verr(), warn(), and vwarn() functions use the global
* variable errno to look up the error message.
*
* The errx() and warnx() functions do not append an error message.
*
* The err(), verr(), errc(), verrc(), errx(), and verrx() functions do
* not return, but exit with the value of the argument eval.
*
*/
#ifndef _SYSTEMLIB_ERR_H
#define _SYSTEMLIB_ERR_H
#include <stdarg.h>
__BEGIN_DECLS
__EXPORT const char *getprogname(void);
__EXPORT void err(int eval, const char *fmt, ...) __attribute__((noreturn, format(printf, 2, 3)));
__EXPORT void verr(int eval, const char *fmt, va_list) __attribute__((noreturn, format(printf, 2, 0)));
__EXPORT void errc(int eval, int code, const char *fmt, ...) __attribute__((noreturn, format(printf, 3, 4)));
__EXPORT void verrc(int eval, int code, const char *fmt, va_list) __attribute__((noreturn, format(printf, 3, 0)));
__EXPORT void errx(int eval, const char *fmt, ...) __attribute__((noreturn, format(printf, 2, 3)));
__EXPORT void verrx(int eval, const char *fmt, va_list) __attribute__((noreturn, format(printf, 2, 0)));
__EXPORT void warn(const char *fmt, ...) __attribute__((format(printf, 1, 2)));
__EXPORT void vwarn(const char *fmt, va_list) __attribute__((format(printf, 1, 0)));
__EXPORT void warnc(int code, const char *fmt, ...) __attribute__((format(printf, 2, 3)));
__EXPORT void vwarnc(int code, const char *fmt, va_list) __attribute__((format(printf, 2, 0)));
__EXPORT void warnx(const char *fmt, ...) __attribute__((format(printf, 1, 2)));
__EXPORT void vwarnx(const char *fmt, va_list) __attribute__((format(printf, 1, 0)));
__END_DECLS
#endif
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