118 lines
2.5 KiB
C
118 lines
2.5 KiB
C
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/*++
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Copyright (c) 1989 Microsoft Corporation
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Module Name:
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NpData.c
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Abstract:
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This module declares the global data used by the Named Pipe file system.
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Author:
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Gary Kimura [GaryKi] 28-Dec-1989
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Revision History:
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--*/
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#include "NpProcs.h"
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//
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// The Bug check file id for this module
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//
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#define BugCheckFileId (NPFS_BUG_CHECK_NPDATA)
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//
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// Local debug trace level
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//
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#define Dbg (DEBUG_TRACE_CATCH_EXCEPTIONS)
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#ifdef ALLOC_PRAGMA
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#pragma alloc_text(PAGE, NpExceptionFilter)
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#pragma alloc_text(PAGE, NpProcessException)
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#endif
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PVCB NpVcb = NULL;
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FAST_IO_DISPATCH NpFastIoDispatch = { sizeof(FAST_IO_DISPATCH),
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NULL, // FastIoCheck
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NpFastRead, // Read
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NpFastWrite, // Write
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NULL, // QueryBasicInfo
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NULL, // QueryStandardInfo
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NULL, // Lock
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NULL, // UnlockSingle
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NULL, // UnlockAll
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NULL }; // UnlockAllByKey
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//
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// Lists of pipe name aliases.
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//
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SINGLE_LIST_ENTRY NpAliasListByLength[(MAX_LENGTH_ALIAS_ARRAY-MIN_LENGTH_ALIAS_ARRAY)/sizeof(WCHAR)+1] = {NULL};
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SINGLE_LIST_ENTRY NpAliasList = {NULL};
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PVOID NpAliases = NULL; // single allocation containing all aliases
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#ifdef NPDBG
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LONG NpDebugTraceLevel = 0x00000000;
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LONG NpDebugTraceIndent = 0;
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#endif // NPDBG
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LONG
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NpExceptionFilter (
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IN NTSTATUS ExceptionCode
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)
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{
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PAGED_CODE();
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DebugTrace(0, Dbg, "NpExceptionFilter %08lx\n", ExceptionCode);
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DebugDump("", Dbg, NULL );
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if (FsRtlIsNtstatusExpected( ExceptionCode )) {
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return EXCEPTION_EXECUTE_HANDLER;
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} else {
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return EXCEPTION_CONTINUE_SEARCH;
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}
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}
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NTSTATUS
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NpProcessException (
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IN PNPFS_DEVICE_OBJECT NpfsDeviceObject,
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IN PIRP Irp,
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IN NTSTATUS ExceptionCode
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)
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{
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NTSTATUS FinalExceptionCode;
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PAGED_CODE();
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FinalExceptionCode = ExceptionCode;
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if (FsRtlIsNtstatusExpected( ExceptionCode )) {
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if ( FlagOn(Irp->Flags, IRP_INPUT_OPERATION) ) {
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Irp->IoStatus.Information = 0;
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}
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NpCompleteRequest( Irp, ExceptionCode );
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} else {
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NpBugCheck( ExceptionCode, 0, 0 );
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}
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return FinalExceptionCode;
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}
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