lighttpd 1.4.x
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69 lines
1.6 KiB
69 lines
1.6 KiB
#ifndef LI_SYS_MMAP_H
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#define LI_SYS_MMAP_H
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#include "first.h"
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#if defined(HAVE_SYS_MMAN_H)
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#include <sys/mman.h>
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#elif defined(_WIN32)
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#include <Windows.h>
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#include <HandleAPI.h>
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#include <io.h>
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#include <MemoryAPI.h>
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#ifndef MAP_FAILED
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#define MAP_FAILED ((void *)-1)
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#endif
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#ifndef MAP_PRIVATE
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#define MAP_PRIVATE 0
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#endif
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#ifndef MAP_SHARED
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#define MAP_SHARED 0
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#endif
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#ifndef PROT_READ
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#define PROT_READ PAGE_READONLY
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#endif
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#define munmap(addr, length) UnmapViewOfFile((LPCVOID)(addr))
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static inline void *
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mmap (void *addr, size_t length, int prot, int flags, int fd, off_t offset)
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{
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/* XXX: this limited implementation maps args only to read-only mmap */
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if (prot != PAGE_READONLY) /*(for PAGE_READONLY and FILE_MAP_READ)*/
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return MAP_FAILED;
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UNUSED(flags);
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HANDLE mh = CreateFileMapping((HANDLE) _get_osfhandle(fd),
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NULL, PAGE_READONLY,
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(sizeof(size_t) > 4) ? length >> 32 : 0,
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length & 0xffffffff, NULL);
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if (NULL == mh)
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return MAP_FAILED;
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LPVOID p = MapViewOfFileEx(mh, FILE_MAP_READ,
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(sizeof(off_t) > 4) ? offset >> 32 : 0,
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offset & 0xffffffff, length, addr);
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CloseHandle(mh);
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return (NULL != p) ? (void *)p : MAP_FAILED;
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}
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#else
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# define MAP_SHARED 0
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# define MAP_PRIVATE 0
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# define PROT_READ 0
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# define mmap(a, b, c, d, e, f) (-1)
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# define munmap(a, b) (-1)
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#endif /* HAVE_SYS_MMAN_H */
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/* NetBSD 1.3.x needs it; also make it available if mmap() is not present */
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#if !defined(MAP_FAILED)
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# define MAP_FAILED ((char*)-1)
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#endif
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#endif
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