49 lines
1.7 KiB
C
49 lines
1.7 KiB
C
/*
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* Copyright (c) 2024 Frederick H. G. Wright II <fw@fwright.net>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#ifndef _MACPORTS_SYS_SOCKET_H_
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#define _MACPORTS_SYS_SOCKET_H_
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/* MP support header */
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#include "MacportsLegacySupport.h"
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/* Include the primary system sys/socket.h */
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#include_next <sys/socket.h>
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/*
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* OSX prior to 10.6 defines CMSG_DATA without properly considering 64-bit
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* builds, due to bad alignment assumptions, though it happens to work in
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* the 10.4 case and only actually fails in the 10.5 64-bit case.
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*
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* In those OS versions we substitute a version of the definition from 10.6.
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*/
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#if __MP_LEGACY_SUPPORT_CMSG_DATA_FIX__
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#define __DARWIN_ALIGNBYTES32 (sizeof(__uint32_t) - 1)
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#define __DARWIN_ALIGN32(p) \
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((size_t)((char *)(size_t)(p) \
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+ __DARWIN_ALIGNBYTES32) &~ __DARWIN_ALIGNBYTES32)
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/* given pointer to struct cmsghdr, return pointer to data */
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#undef CMSG_DATA
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#define CMSG_DATA(cmsg) ((unsigned char *)(cmsg) + \
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__DARWIN_ALIGN32(sizeof(struct cmsghdr)))
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#endif /* __MP_LEGACY_SUPPORT_CMSG_DATA_FIX__ */
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#endif /* _MACPORTS_SYS_SOCKET_H_ */
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