| | 1 | /* |
| | 2 | * Copyright (c) 2003-2010 Apple 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 <stdarg.h> |
| | 36 | #include "string.h" |
| | 37 | |
| | 38 | int (*vprintf_stderr_func)(const char *format, va_list ap); |
| | 39 | |
| | 40 | #define __STDERR_FILENO 2 |
| | 41 | int write(int fd, const char* cbuf, int nbyte); |
| | 42 | |
| | 43 | /* This function allows the writing of a mach error message to an |
| | 44 | * application-controllable output method, the default being to |
| | 45 | * use printf if no other method is specified by the application. |
| | 46 | * |
| | 47 | * To override, set the global function pointer vprintf_stderr to |
| | 48 | * a function which takes the same parameters as vprintf. |
| | 49 | */ |
| | 50 | |
| | 51 | __private_extern__ int |
| | 52 | fprintf_stderr(const char *format, ...) |
| | 53 | { |
| | 54 | va_list args; |
| | 55 | int retval; |
| | 56 | |
| | 57 | va_start(args, format); |
| | 58 | if (vprintf_stderr_func == NULL) { |
| | 59 | char buffer[1024]; |
| | 60 | retval = _mach_vsnprintf(buffer, sizeof(buffer), format, args); |
| | 61 | write(__STDERR_FILENO, buffer, retval); |
| | 62 | } else { |
| | 63 | retval = (*vprintf_stderr_func)(format, args); |
| | 64 | } |
| | 65 | va_end(args); |
| | 66 | |
| | 67 | return retval; |
| | 68 | } |
projects / apple / xnu.git / blame_incremental