1/* 2 * Copyright (c) 2003 Apple Computer, Inc. All rights reserved. 3 * 4 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ 5 * 6 * This file contains Original Code and/or Modifications of Original Code 7 * as defined in and that are subject to the Apple Public Source License 8 * Version 2.0 (the 'License'). You may not use this file except in 9 * compliance with the License. The rights granted to you under the License 10 * may not be used to create, or enable the creation or redistribution of, 11 * unlawful or unlicensed copies of an Apple operating system, or to 12 * circumvent, violate, or enable the circumvention or violation of, any 13 * terms of an Apple operating system software license agreement. 14 * 15 * Please obtain a copy of the License at 16 * http://www.opensource.apple.com/apsl/ and read it before using this file. 17 * 18 * The Original Code and all software distributed under the License are 19 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 20 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 21 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 22 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 23 * Please see the License for the specific language governing rights and 24 * limitations under the License. 25 * 26 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ 27 */ 28/* 29 * @OSF_FREE_COPYRIGHT@ 30 * 31 */ 32 33#include <mach/mach.h> 34#include <mach/mach_init.h> 35#include <stdio.h> 36#include <stdarg.h> 37 38int (*vprintf_stderr_func)(const char *format, va_list ap); 39 40 41/* This function allows the writing of a mach error message to an 42 * application-controllable output method, the default being to 43 * use printf if no other method is specified by the application. 44 * 45 * To override, set the global (static) function pointer vprintf_stderr to 46 * a function which takes the same parameters as vprintf. 47 */ 48 49int fprintf_stderr(const char *format, ...) 50{ 51 va_list args; 52 int retval; 53 54 va_start(args, format); 55 if (vprintf_stderr_func == NULL) 56 retval = vprintf(format, args); 57 else 58 retval = (*vprintf_stderr_func)(format, args); 59 va_end(args); 60 61 return retval; 62} 63