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- Formatting fixes
- Add SEH to NtRaiseHardError. svn path=/trunk/; revision=20429
This commit is contained in:
Alex Ionescu
parent
ba6ca2fce0
commit
c505e93418
1 changed files with 197 additions and 27 deletions
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@ -1,10 +1,9 @@
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/*
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* COPYRIGHT: See COPYING in the top level directory
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* PROJECT: ReactOS kernel
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* PROJECT: ReactOS Kernel
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* FILE: ntoskrnl/ex/error.c
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* PURPOSE: Error Functions and Status/Exception Dispatching/Raising
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*
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* PROGRAMMERS: Alex Ionescu (alex@relsoft.net) - Created File
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* PROGRAMMERS: Alex Ionescu (alex@relsoft.net)
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*/
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/* INCLUDES *****************************************************************/
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@ -13,6 +12,8 @@
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#define NDEBUG
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#include <internal/debug.h>
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#define TAG_ERR TAG('E', 'r', 'r', ' ')
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/* GLOBALS ****************************************************************/
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BOOLEAN ExReadyForErrors = FALSE;
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@ -21,11 +22,23 @@ PEPROCESS ExpDefaultErrorPortProcess = NULL;
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/* FUNCTIONS ****************************************************************/
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VOID
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NTAPI
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ExpRaiseHardError(IN NTSTATUS ErrorStatus,
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IN ULONG NumberOfParameters,
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IN ULONG UnicodeStringParameterMask,
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IN PULONG_PTR Parameters,
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IN ULONG ValidResponseOptions,
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OUT PULONG Response)
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{
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UNIMPLEMENTED;
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}
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/*
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* @implemented
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*/
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VOID
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STDCALL
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NTAPI
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ExRaiseAccessViolation(VOID)
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{
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/* Raise the Right Status */
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@ -36,7 +49,7 @@ ExRaiseAccessViolation(VOID)
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* @implemented
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*/
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VOID
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STDCALL
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NTAPI
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ExRaiseDatatypeMisalignment (VOID)
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{
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/* Raise the Right Status */
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@ -47,17 +60,18 @@ ExRaiseDatatypeMisalignment (VOID)
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* @implemented
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*/
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LONG
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STDCALL
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NTAPI
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ExSystemExceptionFilter(VOID)
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{
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return KeGetPreviousMode() != KernelMode ? EXCEPTION_EXECUTE_HANDLER : EXCEPTION_CONTINUE_SEARCH;
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return KeGetPreviousMode() != KernelMode ?
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EXCEPTION_EXECUTE_HANDLER : EXCEPTION_CONTINUE_SEARCH;
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}
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/*
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* @unimplemented
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*/
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VOID
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STDCALL
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NTAPI
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ExRaiseHardError(IN NTSTATUS ErrorStatus,
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IN ULONG NumberOfParameters,
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IN ULONG UnicodeStringParameterMask,
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@ -65,11 +79,19 @@ ExRaiseHardError(IN NTSTATUS ErrorStatus,
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IN ULONG ValidResponseOptions,
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OUT PULONG Response)
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{
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UNIMPLEMENTED;
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/* FIXME: Capture to user-mode! */
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/* Now call the worker function */
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ExpRaiseHardError(ErrorStatus,
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NumberOfParameters,
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UnicodeStringParameterMask,
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Parameters,
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ValidResponseOptions,
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Response);
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}
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NTSTATUS
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STDCALL
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NTAPI
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NtRaiseHardError(IN NTSTATUS ErrorStatus,
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IN ULONG NumberOfParameters,
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IN ULONG UnicodeStringParameterMask,
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@ -77,37 +99,184 @@ NtRaiseHardError(IN NTSTATUS ErrorStatus,
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IN ULONG ValidResponseOptions,
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OUT PULONG Response)
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{
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NTSTATUS Status;
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PULONG_PTR SafeParams = NULL;
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ULONG SafeResponse;
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UNICODE_STRING SafeString;
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ULONG i;
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ULONG ParamSize;
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KPROCESSOR_MODE PreviousMode = ExGetPreviousMode();
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DPRINT1("Hard error %x\n", ErrorStatus);
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/* Call the Executive Function (WE SHOULD PUT SEH HERE/CAPTURE!) */
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ExRaiseHardError(ErrorStatus,
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NumberOfParameters,
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UnicodeStringParameterMask,
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Parameters,
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ValidResponseOptions,
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Response);
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/* Validate parameter count */
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if (NumberOfParameters > MAXIMUM_HARDERROR_PARAMETERS)
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{
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/* Fail */
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DPRINT1("Invalid parameters\n");
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return STATUS_INVALID_PARAMETER_2;
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}
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/* Return Success */
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return STATUS_SUCCESS;
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/* Make sure we have some at least */
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if ((Parameters) && !(NumberOfParameters))
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{
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/* Fail */
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DPRINT1("Invalid parameters\n");
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return STATUS_INVALID_PARAMETER_2;
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}
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/* Check if we were called from user-mode */
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if (PreviousMode != KernelMode)
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{
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/* First validate the responses */
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switch (ValidResponseOptions)
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{
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/* Check all valid cases */
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case OptionAbortRetryIgnore:
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case OptionOk:
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case OptionOkCancel:
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case OptionRetryCancel:
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case OptionYesNo:
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case OptionYesNoCancel:
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case OptionShutdownSystem:
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break;
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/* Anything else is invalid */
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default:
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return STATUS_INVALID_PARAMETER_4;
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}
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/* Enter SEH Block */
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_SEH_TRY
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{
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/* Validate the response pointer */
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ProbeForWriteUlong(Response);
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/* Check if we have parameters */
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if (Parameters)
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{
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/* Validate the parameter pointers */
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ParamSize = sizeof(ULONG_PTR) * NumberOfParameters;
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ProbeForRead(Parameters, ParamSize, sizeof(ULONG_PTR));
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/* Allocate a safe buffer */
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SafeParams = ExAllocatePoolWithTag(PagedPool,
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ParamSize,
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TAG_ERR);
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/* Copy them */
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RtlMoveMemory(SafeParams, Parameters, ParamSize);
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/* Nowo check if there's strings in it */
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if (UnicodeStringParameterMask)
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{
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/* Loop every string */
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for (i = 0; i < NumberOfParameters; i++)
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{
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/* Check if this parameter is a string */
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if (UnicodeStringParameterMask & (1 << i))
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{
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/* Probe the structure */
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ProbeForRead((PVOID)SafeParams[i],
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sizeof(UNICODE_STRING),
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sizeof(ULONG_PTR));
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/* Capture it */
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RtlMoveMemory(&SafeString,
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(PVOID)SafeParams[i],
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sizeof(UNICODE_STRING));
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/* Probe the buffer */
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ProbeForRead(SafeString.Buffer,
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SafeString.MaximumLength,
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sizeof(UCHAR));
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}
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}
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}
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}
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}
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_SEH_EXCEPT(_SEH_ExSystemExceptionFilter)
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{
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/* Free captured buffer */
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if (SafeParams) ExFreePool(SafeParams);
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Status = _SEH_GetExceptionCode();
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}
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_SEH_END;
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/* If we failed to capture/probe, bail out */
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if (!NT_SUCCESS(Status)) return Status;
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/* Call the system function directly, because we probed */
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ExpRaiseHardError(ErrorStatus,
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NumberOfParameters,
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UnicodeStringParameterMask,
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SafeParams,
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ValidResponseOptions,
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&SafeResponse);
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}
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else
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{
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/* Reuse variable */
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SafeParams = Parameters;
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/*
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* Call the Executive Function. It will probe and copy pointers to
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* user-mode
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*/
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ExRaiseHardError(ErrorStatus,
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NumberOfParameters,
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UnicodeStringParameterMask,
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SafeParams,
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ValidResponseOptions,
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&SafeResponse);
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}
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/* Check if we were called in user-mode */
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if (PreviousMode != KernelMode)
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{
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/* That means we have a buffer to free */
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if (SafeParams) ExFreePool(SafeParams);
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/* Enter SEH Block for return */
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_SEH_TRY
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{
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/* Return the response */
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*Response = SafeResponse;
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}
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_SEH_EXCEPT(_SEH_ExSystemExceptionFilter)
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{
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Status = _SEH_GetExceptionCode();
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}
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_SEH_END;
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}
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else
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{
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/* Return the response */
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*Response = SafeResponse;
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}
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/* Return status */
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return Status;
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}
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NTSTATUS
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STDCALL
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NTAPI
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NtSetDefaultHardErrorPort(IN HANDLE PortHandle)
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{
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KPROCESSOR_MODE PreviousMode = ExGetPreviousMode();
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NTSTATUS Status = STATUS_UNSUCCESSFUL;
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/* Check if we have the Privilege */
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if(!SeSinglePrivilegeCheck(SeTcbPrivilege, PreviousMode)) {
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DPRINT1("NtSetDefaultHardErrorPort: Caller requires the SeTcbPrivilege privilege!\n");
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if(!SeSinglePrivilegeCheck(SeTcbPrivilege, PreviousMode))
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{
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DPRINT1("NtSetDefaultHardErrorPort: Caller requires "
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"the SeTcbPrivilege privilege!\n");
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return STATUS_PRIVILEGE_NOT_HELD;
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}
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/* Only called once during bootup, make sure we weren't called yet */
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if(!ExReadyForErrors) {
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if(!ExReadyForErrors)
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{
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/* Reference the port */
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Status = ObReferenceObjectByHandle(PortHandle,
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0,
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LpcPortObjectType,
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@ -116,14 +285,15 @@ NtSetDefaultHardErrorPort(IN HANDLE PortHandle)
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NULL);
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/* Check for Success */
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if(NT_SUCCESS(Status)) {
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if(NT_SUCCESS(Status))
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{
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/* Save the data */
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ExpDefaultErrorPortProcess = PsGetCurrentProcess();
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ExReadyForErrors = TRUE;
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}
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}
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/* Return status to caller */
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return Status;
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}
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