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https://github.com/darlinghq/darling-xnu.git
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69 lines
2.2 KiB
C
69 lines
2.2 KiB
C
/*
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* Copyright (c) 2003-2010 Apple Inc. All rights reserved.
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*
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* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
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*
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* This file contains Original Code and/or Modifications of Original Code
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* as defined in and that are subject to the Apple Public Source License
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* Version 2.0 (the 'License'). You may not use this file except in
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* compliance with the License. The rights granted to you under the License
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* may not be used to create, or enable the creation or redistribution of,
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* unlawful or unlicensed copies of an Apple operating system, or to
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* circumvent, violate, or enable the circumvention or violation of, any
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* terms of an Apple operating system software license agreement.
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*
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* Please obtain a copy of the License at
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* http://www.opensource.apple.com/apsl/ and read it before using this file.
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*
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* The Original Code and all software distributed under the License are
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* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
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* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
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* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
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* Please see the License for the specific language governing rights and
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* limitations under the License.
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*
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* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
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*/
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/*
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* @OSF_FREE_COPYRIGHT@
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*
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*/
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#include <mach/mach.h>
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#include <mach/mach_init.h>
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#include <stdarg.h>
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#include "string.h"
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int (*vprintf_stderr_func)(const char *format, va_list ap);
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#define __STDERR_FILENO 2
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int write(int fd, const char* cbuf, int nbyte);
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/* This function allows the writing of a mach error message to an
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* application-controllable output method, the default being to
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* use printf if no other method is specified by the application.
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*
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* To override, set the global function pointer vprintf_stderr to
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* a function which takes the same parameters as vprintf.
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*/
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__private_extern__ int
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fprintf_stderr(const char *format, ...)
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{
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va_list args;
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int retval;
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va_start(args, format);
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if (vprintf_stderr_func == NULL) {
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char buffer[1024];
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retval = _mach_vsnprintf(buffer, sizeof(buffer), format, args);
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write(__STDERR_FILENO, buffer, retval);
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} else {
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retval = (*vprintf_stderr_func)(format, args);
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}
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va_end(args);
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return retval;
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}
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