1 files changed, 160 insertions, 0 deletions
diff --git a/private/nw/rdr/except.c b/private/nw/rdr/except.c
new file mode 100644
index 000000000..0c82cc863
--- /dev/null
+++ b/private/nw/rdr/except.c
@@ -0,0 +1,160 @@
+/*++
+
+Copyright (c) 1992  Microsoft Corporation
+
+Module Name:
+
+    Except.c
+
+Abstract:
+
+    This module implements the exception handling for the NetWare
+    redirector called by the dispatch driver.
+
+Author:
+
+    Colin Watson    [ColinW]    19-Dec-1992
+
+Revision History:
+
+--*/
+
+#include "Procs.h"
+
+//
+//  The debug trace level
+//
+
+#define Dbg                              (DEBUG_TRACE_CATCH_EXCEPTIONS)
+
+#if 0  // Not pageable
+NwExceptionFilter
+NwProcessException
+#endif
+
+LONG
+NwExceptionFilter (
+    IN PIRP Irp,
+    IN PEXCEPTION_POINTERS ExceptionPointer
+    )
+
+/*++
+
+Routine Description:
+
+    This routine is used to decide if we should or should not handle
+    an exception status that is being raised.  It inserts the status
+    into the IrpContext and either indicates that we should handle
+    the exception or bug check the system.
+
+Arguments:
+
+    ExceptionCode - Supplies the exception code to being checked.
+
+Return Value:
+
+    ULONG - returns EXCEPTION_EXECUTE_HANDLER or bugchecks
+
+--*/
+
+{
+    NTSTATUS ExceptionCode;
+#ifdef NWDBG
+    PVOID ExceptionAddress;
+    ExceptionAddress = ExceptionPointer->ExceptionRecord->ExceptionAddress;
+#endif
+
+    ExceptionCode = ExceptionPointer->ExceptionRecord->ExceptionCode;
+    DebugTrace(0, DEBUG_TRACE_UNWIND, "NwExceptionFilter %X\n", ExceptionCode);
+#ifdef NWDBG
+    DebugTrace(0, DEBUG_TRACE_UNWIND, "                  %X\n", ExceptionAddress);
+#endif
+
+    //
+    // If the exception is STATUS_IN_PAGE_ERROR, get the I/O error code
+    // from the exception record.
+    //
+
+    if (ExceptionCode == STATUS_IN_PAGE_ERROR) {
+        if (ExceptionPointer->ExceptionRecord->NumberParameters >= 3) {
+            ExceptionCode = ExceptionPointer->ExceptionRecord->ExceptionInformation[2];
+        }
+    }
+
+    if (FsRtlIsNtstatusExpected( ExceptionCode )) {
+
+        DebugTrace(0, DEBUG_TRACE_UNWIND, "Exception expected\n", 0);
+        return EXCEPTION_EXECUTE_HANDLER;
+
+    } else {
+
+        return EXCEPTION_CONTINUE_SEARCH;
+    }
+}
+
+NTSTATUS
+NwProcessException (
+    IN PIRP_CONTEXT IrpContext,
+    IN NTSTATUS ExceptionCode
+    )
+
+/*++
+
+Routine Description:
+
+    This routine process an exception.  It either completes the request
+    with the saved exception status or it sends it off to IoRaiseHardError()
+
+Arguments:
+
+    IrpContext - Supplies the Irp being processed
+
+    ExceptionCode - Supplies the normalized exception status being handled
+
+Return Value:
+
+    NTSTATUS - Returns the results of either posting the Irp or the
+        saved completion status.
+
+--*/
+
+{
+    NTSTATUS Status;
+    PIRP Irp;
+
+    DebugTrace(0, Dbg, "NwProcessException\n", 0);
+
+    Irp = IrpContext->pOriginalIrp;
+    Irp->IoStatus.Status = ExceptionCode;
+
+    //
+    //  If the error is a hard error, or verify required, then we will complete
+    //  it if this is a recursive Irp, or with a top-level Irp, either send
+    //  it to the Fsp for verification, or send it to IoRaiseHardError, who
+    //  will deal with it.
+    //
+
+    if (ExceptionCode == STATUS_CANT_WAIT) {
+
+        Status = NwPostToFsp( IrpContext, TRUE );
+
+    } else {
+
+        //
+        //  We got an error, so zero out the information field before
+        //  completing the request if this was an input operation.
+        //  Otherwise IopCompleteRequest will try to copy to the user's buffer.
+        //
+
+        if ( FlagOn(Irp->Flags, IRP_INPUT_OPERATION) ) {
+
+            Irp->IoStatus.Information = 0;
+        }
+
+        Status = ExceptionCode;
+
+    }
+
+    return Status;
+}
+