1*8d741a5dSApple OSS Distributions /* 2*8d741a5dSApple OSS Distributions * Copyright (c) 2000-2024 Apple Inc. All rights reserved. 3*8d741a5dSApple OSS Distributions * 4*8d741a5dSApple OSS Distributions * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ 5*8d741a5dSApple OSS Distributions * 6*8d741a5dSApple OSS Distributions * This file contains Original Code and/or Modifications of Original Code 7*8d741a5dSApple OSS Distributions * as defined in and that are subject to the Apple Public Source License 8*8d741a5dSApple OSS Distributions * Version 2.0 (the 'License'). You may not use this file except in 9*8d741a5dSApple OSS Distributions * compliance with the License. The rights granted to you under the License 10*8d741a5dSApple OSS Distributions * may not be used to create, or enable the creation or redistribution of, 11*8d741a5dSApple OSS Distributions * unlawful or unlicensed copies of an Apple operating system, or to 12*8d741a5dSApple OSS Distributions * circumvent, violate, or enable the circumvention or violation of, any 13*8d741a5dSApple OSS Distributions * terms of an Apple operating system software license agreement. 14*8d741a5dSApple OSS Distributions * 15*8d741a5dSApple OSS Distributions * Please obtain a copy of the License at 16*8d741a5dSApple OSS Distributions * http://www.opensource.apple.com/apsl/ and read it before using this file. 17*8d741a5dSApple OSS Distributions * 18*8d741a5dSApple OSS Distributions * The Original Code and all software distributed under the License are 19*8d741a5dSApple OSS Distributions * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 20*8d741a5dSApple OSS Distributions * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 21*8d741a5dSApple OSS Distributions * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 22*8d741a5dSApple OSS Distributions * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 23*8d741a5dSApple OSS Distributions * Please see the License for the specific language governing rights and 24*8d741a5dSApple OSS Distributions * limitations under the License. 25*8d741a5dSApple OSS Distributions * 26*8d741a5dSApple OSS Distributions * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ 27*8d741a5dSApple OSS Distributions */ 28*8d741a5dSApple OSS Distributions 29*8d741a5dSApple OSS Distributions #ifndef _NET_SYSCTL_H_ 30*8d741a5dSApple OSS Distributions #define _NET_SYSCTL_H_ 31*8d741a5dSApple OSS Distributions 32*8d741a5dSApple OSS Distributions #include <sys/cdefs.h> 33*8d741a5dSApple OSS Distributions #include <sys/sysctl.h> 34*8d741a5dSApple OSS Distributions /* 35*8d741a5dSApple OSS Distributions * Helper utilities for the sysctl procedures used 36*8d741a5dSApple OSS Distributions * by bsd networking. 37*8d741a5dSApple OSS Distributions */ 38*8d741a5dSApple OSS Distributions 39*8d741a5dSApple OSS Distributions /* 40*8d741a5dSApple OSS Distributions * DECLARE_SYSCTL_HANDLER_ARG_ARRAY 41*8d741a5dSApple OSS Distributions * 42*8d741a5dSApple OSS Distributions * Helper macro to be invoked from a sysctl handler function. 43*8d741a5dSApple OSS Distributions * 44*8d741a5dSApple OSS Distributions * The macro compares the `arg2' sysctl handler argument 45*8d741a5dSApple OSS Distributions * with the `expected_array_size' macro parameter. 46*8d741a5dSApple OSS Distributions * 47*8d741a5dSApple OSS Distributions * If `arg2' is equal to `expected_array_size', the macro will 48*8d741a5dSApple OSS Distributions * define two local variables, the names of which are controlled 49*8d741a5dSApple OSS Distributions * by macro parameters: 50*8d741a5dSApple OSS Distributions * 51*8d741a5dSApple OSS Distributions * element_type *`array_var'; 52*8d741a5dSApple OSS Distributions * unsigned int `len_var'; 53*8d741a5dSApple OSS Distributions * 54*8d741a5dSApple OSS Distributions * The `array_var' local variable will be sized in accordance 55*8d741a5dSApple OSS Distributions * to the parameters. It does not use `__sized_by` annotation, 56*8d741a5dSApple OSS Distributions * to allow the body of the handler function to change the values, 57*8d741a5dSApple OSS Distributions * if needed. 58*8d741a5dSApple OSS Distributions * 59*8d741a5dSApple OSS Distributions * If `arg2' is not equal to `expected_array_size', the macro 60*8d741a5dSApple OSS Distributions * will return from the sysctl handler function with the 61*8d741a5dSApple OSS Distributions * EINVAL code. 62*8d741a5dSApple OSS Distributions */ 63*8d741a5dSApple OSS Distributions #define DECLARE_SYSCTL_HANDLER_ARG_ARRAY(element_type, \ 64*8d741a5dSApple OSS Distributions expected_array_size, \ 65*8d741a5dSApple OSS Distributions array_var, \ 66*8d741a5dSApple OSS Distributions len_var) \ 67*8d741a5dSApple OSS Distributions unsigned int len_var = (unsigned int)arg2; \ 68*8d741a5dSApple OSS Distributions if (len_var != (expected_array_size)) { \ 69*8d741a5dSApple OSS Distributions return EINVAL; \ 70*8d741a5dSApple OSS Distributions } \ 71*8d741a5dSApple OSS Distributions element_type * array_var = __unsafe_forge_bidi_indexable( \ 72*8d741a5dSApple OSS Distributions element_type *, arg1, len_var * sizeof(element_type)) 73*8d741a5dSApple OSS Distributions 74*8d741a5dSApple OSS Distributions 75*8d741a5dSApple OSS Distributions #endif /* _NET_SYSCTL_H_ */ 76