2008-06-08 14:39:49 -07:00
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#include <stdio.h>
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2008-02-27 13:01:30 -08:00
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#include <sys/types.h>
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2008-06-08 14:39:49 -07:00
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#include <unistd.h>
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2008-02-27 13:01:30 -08:00
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#define WIN32_LEAN_AND_MEAN
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#include <windows.h>
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#undef WIN32_LEAN_AND_MEAN
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#ifndef __CEGCC__
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# include <io.h>
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#endif /* ! __CEGCC__ */
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2008-09-13 14:19:22 -07:00
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#include "Evil.h"
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2008-06-08 14:39:49 -07:00
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2008-02-27 13:01:30 -08:00
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif /* HAVE_CONFIG_H */
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2008-04-26 09:27:46 -07:00
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#include "sys/mman.h"
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2008-02-27 13:01:30 -08:00
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#if HAVE___ATTRIBUTE__
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# define __UNUSED__ __attribute__((unused))
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#else
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# define __UNUSED__
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#endif /* HAVE___ATTRIBUTE__ */
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2008-03-05 01:19:38 -08:00
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#if defined(__CEGCC__)
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2008-02-27 13:01:30 -08:00
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# define _get_osfhandle get_osfhandle
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2008-03-05 03:22:46 -08:00
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# elif defined (__MINGW32CE__)
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2008-03-05 01:19:38 -08:00
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# define _get_osfhandle(FILEDES) ((long)FILEDES)
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#endif /* ! __CEGCC__ && ! __MINGW32CE__ */
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2008-02-27 13:01:30 -08:00
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2008-06-08 14:39:49 -07:00
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/***** API *****/
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2008-02-27 13:01:30 -08:00
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void *
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mmap(void *addr __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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2008-06-08 14:39:49 -07:00
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OSVERSIONINFO os_version;
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2008-02-27 13:01:30 -08:00
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2008-06-08 14:39:49 -07:00
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os_version.dwOSVersionInfoSize = sizeof(os_version);
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if (!GetVersionEx(&os_version))
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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] GetVersionEx 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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2008-02-27 13:01:30 -08:00
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2008-06-09 11:35:49 -07:00
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#ifdef _WIN32_WCE
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2008-06-08 14:39:49 -07:00
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if ((os_version.dwPlatformId == VER_PLATFORM_WIN32_CE) &&
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(os_version.dwMajorVersion < 5))
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2008-02-27 13:01:30 -08:00
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{
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2008-06-09 11:35:49 -07:00
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void *data;
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2008-06-08 14:39:49 -07:00
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size_t size;
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data = malloc(len);
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if (!data)
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2008-02-27 13:01:30 -08:00
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{
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2008-06-08 14:39:49 -07:00
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fprintf (stderr, "[Evil] [mmap] malloc failed\n");
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return MAP_FAILED;
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2008-02-27 13:01:30 -08:00
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}
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2008-06-08 14:39:49 -07:00
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size = read(fd, data, len);
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if (size != len)
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2008-02-27 13:01:30 -08:00
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{
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2008-06-08 14:39:49 -07:00
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fprintf (stderr, "[Evil] [mmap] read failed\n");
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free(data);
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return MAP_FAILED;
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}
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if (lseek(fd, 0, SEEK_SET) == -1)
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{
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fprintf (stderr, "[Evil] [mmap] lseek failed\n");
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free(data);
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return MAP_FAILED;
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2008-02-27 13:01:30 -08:00
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}
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2008-06-09 11:35:49 -07:00
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return data;
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2008-02-27 13:01:30 -08:00
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}
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else
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2008-06-09 11:35:49 -07:00
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#endif /* ! _WIN32_WCE */
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2008-02-27 13:01:30 -08:00
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{
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2008-06-08 14:39:49 -07:00
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HANDLE fm;
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DWORD protect = PAGE_NOACCESS;
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DWORD access = 0;
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HANDLE handle;
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2008-06-09 11:35:49 -07:00
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void *data;
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2008-06-08 14:39:49 -07:00
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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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2008-02-27 13:01:30 -08:00
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{
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2008-06-08 14:39:49 -07:00
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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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2008-02-27 13:01:30 -08:00
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else
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2008-06-08 14:39:49 -07:00
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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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2008-02-27 13:01:30 -08:00
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}
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2008-06-08 14:39:49 -07:00
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if (protect & PAGE_READWRITE)
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access = FILE_MAP_ALL_ACCESS;
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if (protect & PAGE_WRITECOPY)
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access = FILE_MAP_COPY;
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2008-02-27 13:01:30 -08:00
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#if 0
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2008-06-08 14:39:49 -07:00
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if (protect & (PAGE_EXECUTE_READWRITE | PAGE_EXECUTE_READ))
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access = FILE_MAP_EXECUTE;
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2008-02-27 13:01:30 -08:00
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#endif
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2008-06-08 14:39:49 -07:00
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if (protect & (PAGE_READWRITE | PAGE_READONLY))
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access = FILE_MAP_READ;
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else
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{
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if (protect & PAGE_READWRITE)
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access = FILE_MAP_WRITE;
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}
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2008-02-27 13:01:30 -08:00
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2008-06-08 14:39:49 -07:00
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data = MapViewOfFile(fm,
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access,
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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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2008-02-27 13:01:30 -08:00
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2008-06-08 14:39:49 -07:00
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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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2008-06-09 11:35:49 -07:00
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return data;
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}
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2008-02-27 13:01:30 -08:00
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}
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int
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munmap(void *addr,
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size_t len __UNUSED__)
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{
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2008-06-09 11:35:49 -07:00
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#ifdef _WIN32_WCE
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2008-06-08 14:39:49 -07:00
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OSVERSIONINFO os_version;
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2008-02-27 13:01:30 -08:00
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2008-06-08 14:39:49 -07:00
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os_version.dwOSVersionInfoSize = sizeof(os_version);
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if (!GetVersionEx(&os_version))
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{
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char *str;
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2008-02-27 13:01:30 -08:00
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2008-06-08 14:39:49 -07:00
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str = evil_last_error_get();
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fprintf(stderr, "[Evil] [munmap] GetVersionEx failed: %s\n", str);
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free(str);
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return -1;
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}
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if ((os_version.dwPlatformId == VER_PLATFORM_WIN32_CE) &&
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(os_version.dwMajorVersion < 5))
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{
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if (addr && (addr != MAP_FAILED))
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free(addr);
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return 0;
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}
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else
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2008-06-09 11:35:49 -07:00
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#endif /* ! _WIN32_WCE */
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2008-06-08 14:39:49 -07:00
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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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2008-02-27 13:01:30 -08:00
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}
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