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62 lines
2.4 KiB
C
62 lines
2.4 KiB
C
/*
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* Copyright (c) 2003 The FreeBSD Project
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#include <sys/types.h>
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#include <sys/mman.h>
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typedef int32_t l_long;
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typedef unsigned int l_uint;
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typedef l_long l_off_t;
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typedef l_uint l_size_t;
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/* mmap options */
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#define LINUX_MAP_SHARED 0x0001
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#define LINUX_MAP_PRIVATE 0x0002
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#define LINUX_MAP_FIXED 0x0010
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#define LINUX_MAP_ANON 0x0020
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#define LINUX_MAP_GROWSDOWN 0x0100
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void *
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Mmap(void *addr, l_size_t len, int prot, int flags, int fd, l_off_t offset)
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{
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int bsd_flags = 0;
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if (flags & LINUX_MAP_SHARED ) bsd_flags |= MAP_SHARED;
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if (flags & LINUX_MAP_PRIVATE) bsd_flags |= MAP_PRIVATE;
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if (flags & LINUX_MAP_FIXED ) bsd_flags |= MAP_FIXED;
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if (flags & LINUX_MAP_ANON ) bsd_flags |= MAP_ANON;
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else bsd_flags |= MAP_NOSYNC;
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if (flags & LINUX_MAP_GROWSDOWN) bsd_flags |= MAP_STACK;
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prot |= PROT_READ; /* always required */
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if (flags & LINUX_MAP_ANON)
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fd = -1;
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return mmap(addr, (size_t) len, prot, bsd_flags, fd, (off_t) offset);
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}
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