1*1031c584SApple OSS Distributions /* 2*1031c584SApple OSS Distributions * Copyright (c) 2023 Apple Inc. All rights reserved. 3*1031c584SApple OSS Distributions * 4*1031c584SApple OSS Distributions * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ 5*1031c584SApple OSS Distributions * 6*1031c584SApple OSS Distributions * This file contains Original Code and/or Modifications of Original Code 7*1031c584SApple OSS Distributions * as defined in and that are subject to the Apple Public Source License 8*1031c584SApple OSS Distributions * Version 2.0 (the 'License'). You may not use this file except in 9*1031c584SApple OSS Distributions * compliance with the License. The rights granted to you under the License 10*1031c584SApple OSS Distributions * may not be used to create, or enable the creation or redistribution of, 11*1031c584SApple OSS Distributions * unlawful or unlicensed copies of an Apple operating system, or to 12*1031c584SApple OSS Distributions * circumvent, violate, or enable the circumvention or violation of, any 13*1031c584SApple OSS Distributions * terms of an Apple operating system software license agreement. 14*1031c584SApple OSS Distributions * 15*1031c584SApple OSS Distributions * Please obtain a copy of the License at 16*1031c584SApple OSS Distributions * http://www.opensource.apple.com/apsl/ and read it before using this file. 17*1031c584SApple OSS Distributions * 18*1031c584SApple OSS Distributions * The Original Code and all software distributed under the License are 19*1031c584SApple OSS Distributions * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 20*1031c584SApple OSS Distributions * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 21*1031c584SApple OSS Distributions * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 22*1031c584SApple OSS Distributions * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 23*1031c584SApple OSS Distributions * Please see the License for the specific language governing rights and 24*1031c584SApple OSS Distributions * limitations under the License. 25*1031c584SApple OSS Distributions * 26*1031c584SApple OSS Distributions * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ 27*1031c584SApple OSS Distributions */ 28*1031c584SApple OSS Distributions #ifndef _NET_SOCKADDRD_UTILS_H_ 29*1031c584SApple OSS Distributions #define _NET_SOCKADDRD_UTILS_H_ 30*1031c584SApple OSS Distributions 31*1031c584SApple OSS Distributions #ifdef XNU_KERNEL_PRIVATE 32*1031c584SApple OSS Distributions 33*1031c584SApple OSS Distributions #include <sys/mcache.h> 34*1031c584SApple OSS Distributions #include <sys/socket.h> 35*1031c584SApple OSS Distributions 36*1031c584SApple OSS Distributions /* 37*1031c584SApple OSS Distributions * Various helper routines for dealing with socket addreses. 38*1031c584SApple OSS Distributions */ 39*1031c584SApple OSS Distributions 40*1031c584SApple OSS Distributions /* 41*1031c584SApple OSS Distributions * Copy the contents of the sockadddr `from' into the memory pointed by `to', 42*1031c584SApple OSS Distributions * which has at least `len' bytes. 43*1031c584SApple OSS Distributions */ 44*1031c584SApple OSS Distributions #define SOCKADDR_COPY_LEN(from, to, len) do { \ 45*1031c584SApple OSS Distributions caddr_t from_bytes __bidi_indexable = NULL; \ 46*1031c584SApple OSS Distributions caddr_t to_bytes __bidi_indexable = NULL; \ 47*1031c584SApple OSS Distributions uint32_t from_len; \ 48*1031c584SApple OSS Distributions VERIFY((to) != NULL && (from) != NULL); \ 49*1031c584SApple OSS Distributions VERIFY(offsetof(struct sockaddr, sa_data) <= (len)); \ 50*1031c584SApple OSS Distributions from_len = *((uint8_t*)(void*)(from)); \ 51*1031c584SApple OSS Distributions VERIFY(from_len <= (len)); \ 52*1031c584SApple OSS Distributions from_bytes = __unsafe_forge_bidi_indexable(caddr_t, (from), from_len); \ 53*1031c584SApple OSS Distributions to_bytes = __unsafe_forge_bidi_indexable(caddr_t, (to), from_len); \ 54*1031c584SApple OSS Distributions *to_bytes = *from_bytes; \ 55*1031c584SApple OSS Distributions *(to_bytes + offsetof(struct sockaddr, sa_family)) = \ 56*1031c584SApple OSS Distributions *(from_bytes + offsetof(struct sockaddr, sa_family)); \ 57*1031c584SApple OSS Distributions if (offsetof(struct sockaddr, sa_data) < from_len) { \ 58*1031c584SApple OSS Distributions bcopy(from_bytes + offsetof(struct sockaddr, sa_data), \ 59*1031c584SApple OSS Distributions to_bytes + offsetof(struct sockaddr, sa_data), \ 60*1031c584SApple OSS Distributions from_len - offsetof(struct sockaddr, sa_data)); \ 61*1031c584SApple OSS Distributions } \ 62*1031c584SApple OSS Distributions } while(0) 63*1031c584SApple OSS Distributions 64*1031c584SApple OSS Distributions /* 65*1031c584SApple OSS Distributions * Copy the contents of the sockaddr `from' into the pointee of `to'. 66*1031c584SApple OSS Distributions */ 67*1031c584SApple OSS Distributions #define SOCKADDR_COPY(from, to) do { \ 68*1031c584SApple OSS Distributions VERIFY((to) != NULL && (from) != NULL); \ 69*1031c584SApple OSS Distributions SOCKADDR_COPY_LEN(from, to, sizeof(*(to))); \ 70*1031c584SApple OSS Distributions } while(0) 71*1031c584SApple OSS Distributions 72*1031c584SApple OSS Distributions #endif /* XNU_KERNEL_PRIVATE */ 73*1031c584SApple OSS Distributions 74*1031c584SApple OSS Distributions #endif /* _NET_SOCKADDRD_UTILS_H_ */ 75