[reactos] 11/30: [NTOS:KD64] Improve KdSystemDebugControl

[Hervé Poussineau]

https://git.reactos.org/?p=reactos.git;a=commitdiff;h=0f36ef3392ac3cc446404…
commit 0f36ef3392ac3cc446404c6d1bf13aabeb19b6d9
Author:     Hervé Poussineau <hpoussin(a)reactos.org>
AuthorDate: Sat Sep 14 08:32:40 2024 +0200
Commit:     Hermès Bélusca-Maïto <hermes.belusca-maito(a)reactos.org>
CommitDate: Tue Jan 28 22:00:37 2025 +0100
    [NTOS:KD64] Improve KdSystemDebugControl
    - Explicitly return STATUS_NOT_IMPLEMENTED on not implemented classes
    - Return STATUS_INVALID_INFO_CLASS on all other classes
---
 ntoskrnl/kd64/kdapi.c | 35 ++++++++++++++++++++++++++++++++---
 1 file changed, 32 insertions(+), 3 deletions(-)
diff --git a/ntoskrnl/kd64/kdapi.c b/ntoskrnl/kd64/kdapi.c
index 36600e4beac..e2dce3491e6 100644
--- a/ntoskrnl/kd64/kdapi.c
+++ b/ntoskrnl/kd64/kdapi.c
@@ -2222,6 +2222,9 @@ KdSystemDebugControl(
     _Out_opt_ PULONG ReturnLength,
     _In_ KPROCESSOR_MODE PreviousMode)
 {
+    NTSTATUS Status;
+    ULONG Length = 0;
+
     /* Handle some internal commands */
     switch ((ULONG)Command)
     {
@@ -2285,9 +2288,35 @@ KdSystemDebugControl(
             break;
     }
-    /* Local kernel debugging is not yet supported */
-    DbgPrint("KdSystemDebugControl is unimplemented!\n");
-    return STATUS_NOT_IMPLEMENTED;
+    switch (Command)
+    {
+        case SysDbgQueryVersion:
+        case SysDbgReadVirtual:
+        case SysDbgWriteVirtual:
+        case SysDbgReadPhysical:
+        case SysDbgWritePhysical:
+        case SysDbgReadControlSpace:
+        case SysDbgWriteControlSpace:
+        case SysDbgReadIoSpace:
+        case SysDbgWriteIoSpace:
+        case SysDbgReadMsr:
+        case SysDbgWriteMsr:
+        case SysDbgReadBusData:
+        case SysDbgWriteBusData:
+        case SysDbgCheckLowMemory:
+            UNIMPLEMENTED;
+            Status = STATUS_NOT_IMPLEMENTED;
+            break;
+
+        default:
+            Status = STATUS_INVALID_INFO_CLASS;
+            break;
+    }
+
+    if (ReturnLength)
+        *ReturnLength = Length;
+
+    return Status;
 }
 /*