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iis4_07.cab
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openf.h
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1997-10-25
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/*++
Copyright (c) 1995-1997 Microsoft Corporation
Module Name :
openf.h
Abstract:
This module defines functions for opening and closing files
and provides transparent caching for file handles
Project:
Internet Server API Extnensions Samples DLL
Revision History:
--*/
# ifndef _OPENF_HXX_
# define _OPENF_HXX_
/************************************************************
* Include Headers
************************************************************/
# include <windows.h>
# include <httpext.h>
/************************************************************
* Type Definitions
************************************************************/
//
// Doubly linked list structure. Can be used as either a list head, or
// as link words.
//
// typedef struct _LIST_ENTRY {
// struct _LIST_ENTRY * volatile Flink;
// struct _LIST_ENTRY * volatile Blink;
// } LIST_ENTRY, *PLIST_ENTRY, *RESTRICTED_POINTER PRLIST_ENTRY;
//
// Doubly-linked list manipulation routines. Implemented as macros
// but logically these are procedures.
//
//
// VOID
// InitializeListHead(
// PLIST_ENTRY ListHead
// );
//
#define InitializeListHead(ListHead) (\
(ListHead)->Flink = (ListHead)->Blink = (ListHead))
//
// BOOLEAN
// IsListEmpty(
// PLIST_ENTRY ListHead
// );
//
#define IsListEmpty(ListHead) \
((ListHead)->Flink == (ListHead))
//
// PLIST_ENTRY
// RemoveHeadList(
// PLIST_ENTRY ListHead
// );
//
#define RemoveHeadList(ListHead) \
(ListHead)->Flink;\
{RemoveEntryList((ListHead)->Flink)}
//
// PLIST_ENTRY
// RemoveTailList(
// PLIST_ENTRY ListHead
// );
//
#define RemoveTailList(ListHead) \
(ListHead)->Blink;\
{RemoveEntryList((ListHead)->Blink)}
//
// VOID
// RemoveEntryList(
// PLIST_ENTRY Entry
// );
//
#define RemoveEntryList(Entry) {\
PLIST_ENTRY _EX_Blink;\
PLIST_ENTRY _EX_Flink;\
_EX_Flink = (Entry)->Flink;\
_EX_Blink = (Entry)->Blink;\
_EX_Blink->Flink = _EX_Flink;\
_EX_Flink->Blink = _EX_Blink;\
}
//
// VOID
// InsertTailList(
// PLIST_ENTRY ListHead,
// PLIST_ENTRY Entry
// );
//
#define InsertTailList(ListHead,Entry) {\
PLIST_ENTRY _EX_Blink;\
PLIST_ENTRY _EX_ListHead;\
_EX_ListHead = (ListHead);\
_EX_Blink = _EX_ListHead->Blink;\
(Entry)->Flink = _EX_ListHead;\
(Entry)->Blink = _EX_Blink;\
_EX_Blink->Flink = (Entry);\
_EX_ListHead->Blink = (Entry);\
}
//
// VOID
// InsertHeadList(
// PLIST_ENTRY ListHead,
// PLIST_ENTRY Entry
// );
//
#define InsertHeadList(ListHead,Entry) {\
PLIST_ENTRY _EX_Flink;\
PLIST_ENTRY _EX_ListHead;\
_EX_ListHead = (ListHead);\
_EX_Flink = _EX_ListHead->Flink;\
(Entry)->Flink = _EX_Flink;\
(Entry)->Blink = _EX_ListHead;\
_EX_Flink->Blink = (Entry);\
_EX_ListHead->Flink = (Entry);\
}
/************************************************************
* Function Definitions
************************************************************/
//
// Initialization and cleanup functions
//
DWORD InitFileHandleCache(VOID);
DWORD CleanupFileHandleCache(VOID);
HANDLE FcOpenFile(IN EXTENSION_CONTROL_BLOCK * pecb, IN LPCSTR pszFile);
DWORD FcCloseFile(IN HANDLE hFile);
BOOL FcReadFromFile(
IN HANDLE hFile,
OUT CHAR * pchBuffer,
IN DWORD dwBufferSize,
OUT LPDWORD pcbRead,
IN OUT LPOVERLAPPED pov
);
# endif // _OPENF_HXX_
/************************ End of File ***********************/