forked from enlightenment/efl
153 lines
3.0 KiB
C
153 lines
3.0 KiB
C
#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif /* HAVE_CONFIG_H */
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#include <stdlib.h>
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#include <stdio.h>
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#include <sys/types.h>
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#ifndef _MSC_VER
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# include <unistd.h>
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#endif
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#ifndef WIN32_LEAN_AND_MEAN
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# define WIN32_LEAN_AND_MEAN
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#endif
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#include <windows.h>
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#undef WIN32_LEAN_AND_MEAN
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# include <io.h>
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#include "evil_macro.h"
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#include "sys/mman.h"
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#include "evil_util.h"
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#include "evil_private.h"
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/***** API *****/
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void *
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mmap(void *addr EVIL_UNUSED,
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size_t len,
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int prot,
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int flags,
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int fd,
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off_t offset)
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{
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HANDLE fm;
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DWORD protect = PAGE_NOACCESS;
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DWORD acs = 0;
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HANDLE handle;
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void *data;
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/* support only MAP_SHARED */
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if (!(flags & MAP_SHARED))
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return MAP_FAILED;
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if (prot & PROT_EXEC)
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{
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if (prot & PROT_READ)
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{
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if (prot & PROT_WRITE)
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protect = PAGE_EXECUTE_READWRITE;
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else
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protect = PAGE_EXECUTE_READ;
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}
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else
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{
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if (prot & PROT_WRITE)
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protect = PAGE_EXECUTE_WRITECOPY;
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else
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protect = PAGE_EXECUTE;
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}
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}
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else
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{
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if (prot & PROT_READ)
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{
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if (prot & PROT_WRITE)
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protect = PAGE_READWRITE;
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else
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protect = PAGE_READONLY;
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}
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else if (prot & PROT_WRITE)
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protect = PAGE_WRITECOPY;
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}
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handle = (HANDLE)_get_osfhandle(fd);
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if (handle == INVALID_HANDLE_VALUE)
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{
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fprintf(stderr, "[Evil] [mmap] _get_osfhandle failed\n");
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return MAP_FAILED;
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}
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fm = CreateFileMapping(handle, NULL, protect, 0, 0, NULL);
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if (!fm)
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{
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char *str;
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str = evil_last_error_get();
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fprintf(stderr, "[Evil] [mmap] CreateFileMapping failed: %s\n", str);
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free(str);
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return MAP_FAILED;
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}
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if ((protect & PAGE_READWRITE) == PAGE_READWRITE)
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acs = FILE_MAP_ALL_ACCESS;
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else if ((protect & PAGE_WRITECOPY) == PAGE_WRITECOPY)
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acs = FILE_MAP_COPY;
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#if 0
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if (protect & (PAGE_EXECUTE_READWRITE | PAGE_EXECUTE_READ))
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acs = FILE_MAP_EXECUTE;
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#endif
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else if (protect & (PAGE_READWRITE | PAGE_READONLY))
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acs = FILE_MAP_READ;
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else
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{
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if ((protect & PAGE_WRITECOPY) == PAGE_WRITECOPY)
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acs = FILE_MAP_WRITE;
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}
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data = MapViewOfFile(fm,
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acs,
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offset & 0xffff0000,
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offset & 0x0000ffff,
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len);
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CloseHandle(fm);
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if (!data)
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{
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char *str;
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str = evil_last_error_get();
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fprintf(stderr, "[Evil] [mmap] MapViewOfFile failed: %s\n", str);
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free(str);
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return MAP_FAILED;
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}
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return data;
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}
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int
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munmap(void *addr,
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size_t len EVIL_UNUSED)
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{
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BOOL res;
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res = UnmapViewOfFile(addr);
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if (!res)
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{
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char *str;
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str = evil_last_error_get();
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fprintf(stderr, "[Evil] [munmap] UnmapViewOfFile failed: %s\n", str);
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free(str);
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}
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return (res == 0) ? -1 : 0;
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}
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