diff -cpr head/src/include/port.h win32_o_direct/src/include/port.h
*** head/src/include/port.h	Thu Jan 11 14:25:43 2007
--- win32_o_direct/src/include/port.h	Fri Jan 12 10:28:00 2007
*************** extern bool rmtree(char *path, bool rmto
*** 273,278 ****
--- 273,279 ----
  /* open() and fopen() replacements to allow deletion of open files and
   * passing of other special options.
   */
+ #define		O_DIRECT	0x80000000
  extern int	pgwin32_open(const char *, int,...);
  extern FILE *pgwin32_fopen(const char *, const char *);
  
diff -cpr head/src/port/open.c win32_o_direct/src/port/open.c
*** head/src/port/open.c	Thu Jan 11 14:25:43 2007
--- win32_o_direct/src/port/open.c	Fri Jan 12 10:28:00 2007
*************** openFlagsToCreateFileFlags(int openFlags
*** 50,56 ****
  
  /*
   *	 - file attribute setting, based on fileMode?
-  *	 - handle other flags? (eg FILE_FLAG_NO_BUFFERING/FILE_FLAG_WRITE_THROUGH)
   */
  int
  pgwin32_open(const char *fileName, int fileFlags,...)
--- 50,55 ----
*************** pgwin32_open(const char *fileName, int f
*** 62,68 ****
  	/* Check that we can handle the request */
  	assert((fileFlags & ((O_RDONLY | O_WRONLY | O_RDWR) | O_APPEND |
  						 (O_RANDOM | O_SEQUENTIAL | O_TEMPORARY) |
! 						 _O_SHORT_LIVED | O_DSYNC |
  		  (O_CREAT | O_TRUNC | O_EXCL) | (O_TEXT | O_BINARY))) == fileFlags);
  
  	sa.nLength = sizeof(sa);
--- 61,67 ----
  	/* Check that we can handle the request */
  	assert((fileFlags & ((O_RDONLY | O_WRONLY | O_RDWR) | O_APPEND |
  						 (O_RANDOM | O_SEQUENTIAL | O_TEMPORARY) |
! 						 _O_SHORT_LIVED | O_DSYNC | O_DIRECT |
  		  (O_CREAT | O_TRUNC | O_EXCL) | (O_TEXT | O_BINARY))) == fileFlags);
  
  	sa.nLength = sizeof(sa);
*************** pgwin32_open(const char *fileName, int f
*** 82,88 ****
  			   ((fileFlags & O_SEQUENTIAL) ? FILE_FLAG_SEQUENTIAL_SCAN : 0) |
  			  ((fileFlags & _O_SHORT_LIVED) ? FILE_ATTRIBUTE_TEMPORARY : 0) |
  				((fileFlags & O_TEMPORARY) ? FILE_FLAG_DELETE_ON_CLOSE : 0) |
! 						((fileFlags & O_DSYNC) ? FILE_FLAG_WRITE_THROUGH : 0),
  						NULL)) == INVALID_HANDLE_VALUE)
  	{
  		switch (GetLastError())
--- 81,88 ----
  			   ((fileFlags & O_SEQUENTIAL) ? FILE_FLAG_SEQUENTIAL_SCAN : 0) |
  			  ((fileFlags & _O_SHORT_LIVED) ? FILE_ATTRIBUTE_TEMPORARY : 0) |
  				((fileFlags & O_TEMPORARY) ? FILE_FLAG_DELETE_ON_CLOSE : 0) |
! 					  ((fileFlags & O_DIRECT) ? FILE_FLAG_NO_BUFFERING : 0) |
! 					  ((fileFlags & O_DSYNC) ? FILE_FLAG_WRITE_THROUGH : 0),
  						NULL)) == INVALID_HANDLE_VALUE)
  	{
  		switch (GetLastError())