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dll: major overhaul of FSP_FILE_SYSTEM dispatching

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This commit is contained in:
Bill Zissimopoulos
2016-02-16 17:03:00 -08:00
parent f8d5273e04
commit d8c35f26b0
13 changed files with 337 additions and 476 deletions
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96
inc/winfsp/winfsp.h
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@ -29,8 +29,10 @@ extern "C" {
* File System
*/
typedef struct _FSP_FILE_SYSTEM FSP_FILE_SYSTEM;
typedef VOID FSP_FILE_SYSTEM_DISPATCHER(FSP_FILE_SYSTEM *, FSP_FSCTL_TRANSACT_REQ *);
typedef NTSTATUS FSP_FILE_SYSTEM_OPERATION(FSP_FILE_SYSTEM *, FSP_FSCTL_TRANSACT_REQ *);
typedef VOID FSP_FILE_SYSTEM_OPERATION_GUARD(FSP_FILE_SYSTEM *,
FSP_FSCTL_TRANSACT_REQ *, FSP_FSCTL_TRANSACT_RSP *);
typedef NTSTATUS FSP_FILE_SYSTEM_OPERATION(FSP_FILE_SYSTEM *,
FSP_FSCTL_TRANSACT_REQ *, FSP_FSCTL_TRANSACT_RSP *);
typedef struct _FSP_FILE_SYSTEM_INTERFACE
{
NTSTATUS (*GetVolumeInfo)(FSP_FILE_SYSTEM *FileSystem,
@ -89,31 +91,39 @@ typedef struct _FSP_FILE_SYSTEM
WCHAR VolumeName[FSP_FSCTL_VOLUME_NAME_SIZEMAX / sizeof(WCHAR)];
HANDLE VolumeHandle;
PVOID UserContext;
NTSTATUS DispatcherResult;
FSP_FILE_SYSTEM_DISPATCHER *Dispatcher;
FSP_FILE_SYSTEM_DISPATCHER *EnterOperation, *LeaveOperation;
FSP_FILE_SYSTEM_OPERATION_GUARD *EnterOperation, *LeaveOperation;
FSP_FILE_SYSTEM_OPERATION *Operations[FspFsctlTransactKindCount];
const FSP_FILE_SYSTEM_INTERFACE *Interface;
HANDLE DispatcherThread;
ULONG DispatcherThreadCount;
NTSTATUS DispatcherResult;
} FSP_FILE_SYSTEM;
FSP_API NTSTATUS FspFileSystemCreate(PWSTR DevicePath,
const FSP_FSCTL_VOLUME_PARAMS *VolumeParams,
const FSP_FILE_SYSTEM_INTERFACE *Interface,
FSP_FILE_SYSTEM **PFileSystem);
FSP_API VOID FspFileSystemDelete(FSP_FILE_SYSTEM *FileSystem);
FSP_API NTSTATUS FspFileSystemLoop(FSP_FILE_SYSTEM *FileSystem);
FSP_API VOID FspFileSystemDirectDispatcher(FSP_FILE_SYSTEM *FileSystem,
FSP_FSCTL_TRANSACT_REQ *Request);
FSP_API VOID FspFileSystemPoolDispatcher(FSP_FILE_SYSTEM *FileSystem,
FSP_FSCTL_TRANSACT_REQ *Request);
FSP_API NTSTATUS FspFileSystemStartDispatcher(FSP_FILE_SYSTEM *FileSystem, ULONG ThreadCount);
FSP_API VOID FspFileSystemStopDispatcher(FSP_FILE_SYSTEM *FileSystem);
static inline
VOID FspFileSystemSetDispatcher(FSP_FILE_SYSTEM *FileSystem,
FSP_FILE_SYSTEM_DISPATCHER *Dispatcher,
FSP_FILE_SYSTEM_DISPATCHER *EnterOperation,
FSP_FILE_SYSTEM_DISPATCHER *LeaveOperation)
VOID FspFileSystemEnterOperation(FSP_FILE_SYSTEM *FileSystem,
FSP_FSCTL_TRANSACT_REQ *Request, FSP_FSCTL_TRANSACT_RSP *Response)
{
if (0 != FileSystem->EnterOperation)
FileSystem->EnterOperation(FileSystem, Request, Response);
}
static inline
VOID FspFileSystemLeaveOperation(FSP_FILE_SYSTEM *FileSystem,
FSP_FSCTL_TRANSACT_REQ *Request, FSP_FSCTL_TRANSACT_RSP *Response)
{
if (0 != FileSystem->LeaveOperation)
FileSystem->LeaveOperation(FileSystem, Request, Response);
}
static inline
VOID FspFileSystemSetOperationGuard(FSP_FILE_SYSTEM *FileSystem,
FSP_FILE_SYSTEM_OPERATION_GUARD *EnterOperation,
FSP_FILE_SYSTEM_OPERATION_GUARD *LeaveOperation)
{
FileSystem->Dispatcher = Dispatcher;
FileSystem->EnterOperation = EnterOperation;
FileSystem->LeaveOperation = LeaveOperation;
}
@ -124,7 +134,6 @@ VOID FspFileSystemSetOperation(FSP_FILE_SYSTEM *FileSystem,
{
FileSystem->Operations[Index] = Operation;
}
static inline
VOID FspFileSystemGetDispatcherResult(FSP_FILE_SYSTEM *FileSystem,
NTSTATUS *PDispatcherResult)
@ -142,26 +151,6 @@ VOID FspFileSystemSetDispatcherResult(FSP_FILE_SYSTEM *FileSystem,
InterlockedCompareExchange(&FileSystem->DispatcherResult, DispatcherResult, 0);
}
static inline
VOID FspFileSystemEnterOperation(FSP_FILE_SYSTEM *FileSystem,
FSP_FSCTL_TRANSACT_REQ *Request)
{
if (0 != FileSystem->EnterOperation)
FileSystem->EnterOperation(FileSystem, Request);
}
static inline
VOID FspFileSystemLeaveOperation(FSP_FILE_SYSTEM *FileSystem,
FSP_FSCTL_TRANSACT_REQ *Request)
{
if (0 != FileSystem->LeaveOperation)
FileSystem->LeaveOperation(FileSystem, Request);
}
FSP_API NTSTATUS FspFileSystemSendResponse(FSP_FILE_SYSTEM *FileSystem,
FSP_FSCTL_TRANSACT_RSP *Response);
FSP_API NTSTATUS FspFileSystemSendResponseWithStatus(FSP_FILE_SYSTEM *FileSystem,
FSP_FSCTL_TRANSACT_REQ *Request, NTSTATUS Result);
/*
* File System Operations
*/
@ -178,36 +167,19 @@ FSP_API NTSTATUS FspAssignSecurity(FSP_FILE_SYSTEM *FileSystem,
FSP_API VOID FspDeleteSecurityDescriptor(PSECURITY_DESCRIPTOR SecurityDescriptor,
NTSTATUS (*CreateFunc)());
FSP_API NTSTATUS FspFileSystemOpCreate(FSP_FILE_SYSTEM *FileSystem,
FSP_FSCTL_TRANSACT_REQ *Request);
FSP_FSCTL_TRANSACT_REQ *Request, FSP_FSCTL_TRANSACT_RSP *Response);
FSP_API NTSTATUS FspFileSystemOpOverwrite(FSP_FILE_SYSTEM *FileSystem,
FSP_FSCTL_TRANSACT_REQ *Request);
FSP_FSCTL_TRANSACT_REQ *Request, FSP_FSCTL_TRANSACT_RSP *Response);
FSP_API NTSTATUS FspFileSystemOpCleanup(FSP_FILE_SYSTEM *FileSystem,
FSP_FSCTL_TRANSACT_REQ *Request);
FSP_FSCTL_TRANSACT_REQ *Request, FSP_FSCTL_TRANSACT_RSP *Response);
FSP_API NTSTATUS FspFileSystemOpClose(FSP_FILE_SYSTEM *FileSystem,
FSP_FSCTL_TRANSACT_REQ *Request);
FSP_FSCTL_TRANSACT_REQ *Request, FSP_FSCTL_TRANSACT_RSP *Response);
FSP_API NTSTATUS FspFileSystemOpQueryInformation(FSP_FILE_SYSTEM *FileSystem,
FSP_FSCTL_TRANSACT_REQ *Request);
FSP_FSCTL_TRANSACT_REQ *Request, FSP_FSCTL_TRANSACT_RSP *Response);
FSP_API NTSTATUS FspFileSystemOpSetInformation(FSP_FILE_SYSTEM *FileSystem,
FSP_FSCTL_TRANSACT_REQ *Request);
FSP_FSCTL_TRANSACT_REQ *Request, FSP_FSCTL_TRANSACT_RSP *Response);
FSP_API NTSTATUS FspFileSystemOpQueryVolumeInformation(FSP_FILE_SYSTEM *FileSystem,
FSP_FSCTL_TRANSACT_REQ *Request);
FSP_API NTSTATUS FspFileSystemSendCreateResponse(FSP_FILE_SYSTEM *FileSystem,
FSP_FSCTL_TRANSACT_REQ *Request, UINT_PTR Information,
PVOID FileNode, UINT32 GrantedAccess, const FSP_FSCTL_FILE_INFO *FileInfo);
FSP_API NTSTATUS FspFileSystemSendOverwriteResponse(FSP_FILE_SYSTEM *FileSystem,
FSP_FSCTL_TRANSACT_REQ *Request,
const FSP_FSCTL_FILE_INFO *FileInfo);
FSP_API NTSTATUS FspFileSystemSendCleanupResponse(FSP_FILE_SYSTEM *FileSystem,
FSP_FSCTL_TRANSACT_REQ *Request);
FSP_API NTSTATUS FspFileSystemSendCloseResponse(FSP_FILE_SYSTEM *FileSystem,
FSP_FSCTL_TRANSACT_REQ *Request);
FSP_API NTSTATUS FspFileSystemSendQueryInformationResponse(FSP_FILE_SYSTEM *FileSystem,
FSP_FSCTL_TRANSACT_REQ *Request, const FSP_FSCTL_FILE_INFO *FileInfo);
FSP_API NTSTATUS FspFileSystemSendSetInformationResponse(FSP_FILE_SYSTEM *FileSystem,
FSP_FSCTL_TRANSACT_REQ *Request, const FSP_FSCTL_FILE_INFO *FileInfo);
FSP_API NTSTATUS FspFileSystemSendQueryVolumeInformationResponse(FSP_FILE_SYSTEM *FileSystem,
FSP_FSCTL_TRANSACT_REQ *Request, const FSP_FSCTL_VOLUME_INFO *VolumeInfo);
FSP_FSCTL_TRANSACT_REQ *Request, FSP_FSCTL_TRANSACT_RSP *Response);
static inline
NTSTATUS FspAccessCheck(FSP_FILE_SYSTEM *FileSystem,
FSP_FSCTL_TRANSACT_REQ *Request,