[PATCH] ntdll: Add SystemKernelDebuggerInformationEx info class to NtQuerySystemInformation().

[Paul Gofman]

Signed-off-by: Paul Gofman 
---
 dlls/ntdll/tests/info.c  | 24 ++++++++++++++++++++++++
 dlls/ntdll/unix/system.c | 18 ++++++++++++++++++
 include/winternl.h       |  6 ++++++
 3 files changed, 48 insertions(+)

diff --git a/dlls/ntdll/tests/info.c b/dlls/ntdll/tests/info.c
index c873a224a7c..85e27e92663 100644
--- a/dlls/ntdll/tests/info.c
+++ b/dlls/ntdll/tests/info.c
@@ -979,6 +979,7 @@ static void test_query_kerndebug(void)
 {
     NTSTATUS status;
     ULONG ReturnLength;
+    SYSTEM_KERNEL_DEBUGGER_INFORMATION_EX skdi_ex;
     SYSTEM_KERNEL_DEBUGGER_INFORMATION skdi;

status = pNtQuerySystemInformation(SystemKernelDebuggerInformation, &skdi, 0, &ReturnLength);
@@ -991,6 +992,29 @@ static void test_query_kerndebug(void)
     status = pNtQuerySystemInformation(SystemKernelDebuggerInformation, &skdi, sizeof(skdi) + 2, &ReturnLength);
     ok( status == STATUS_SUCCESS, "Expected STATUS_SUCCESS, got %08x\n", status);
     ok( sizeof(skdi) == ReturnLength, "Inconsistent length %d\n", ReturnLength);
+
+    status = pNtQuerySystemInformation(SystemKernelDebuggerInformationEx, &skdi_ex, 0, &ReturnLength);
+    ok( status == STATUS_INFO_LENGTH_MISMATCH
+            || status == STATUS_NOT_IMPLEMENTED    /* before win7 */
+            || status == STATUS_INVALID_INFO_CLASS /* wow64 on Win10 */,
+            "Expected STATUS_INFO_LENGTH_MISMATCH, got %08x\n", status);
+
+    if (status != STATUS_INFO_LENGTH_MISMATCH)
+    {
+        win_skip( "NtQuerySystemInformation(SystemKernelDebuggerInformationEx) is not implemented.\n" );
+    }
+    else
+    {
+        status = pNtQuerySystemInformation(SystemKernelDebuggerInformationEx, &skdi_ex,
+                sizeof(skdi_ex), &ReturnLength);
+        ok( status == STATUS_SUCCESS, "Expected STATUS_SUCCESS, got %08x\n", status);
+        ok( sizeof(skdi_ex) == ReturnLength, "Inconsistent length %d\n", ReturnLength);
+
+        status = pNtQuerySystemInformation(SystemKernelDebuggerInformationEx, &skdi_ex,
+                sizeof(skdi_ex) + 2, &ReturnLength);
+        ok( status == STATUS_SUCCESS, "Expected STATUS_SUCCESS, got %08x\n", status);
+        ok( sizeof(skdi_ex) == ReturnLength, "Inconsistent length %d\n", ReturnLength);
+    }
 }

static void test_query_regquota(void)
diff --git a/dlls/ntdll/unix/system.c b/dlls/ntdll/unix/system.c
index 596eea251b6..5efb99aaf17 100644
--- a/dlls/ntdll/unix/system.c
+++ b/dlls/ntdll/unix/system.c
@@ -2595,6 +2595,24 @@ NTSTATUS WINAPI NtQuerySystemInformation( SYSTEM_INFORMATION_CLASS class,
         break;
     }

+    case SystemKernelDebuggerInformationEx:
+    {
+        SYSTEM_KERNEL_DEBUGGER_INFORMATION_EX skdi;
+
+        skdi.DebuggerAllowed = FALSE;
+        skdi.DebuggerEnabled = FALSE;
+        skdi.DebuggerPresent = FALSE;
+
+        len = sizeof(skdi);
+        if (size >= len)
+        {
+            if (!info) ret = STATUS_ACCESS_VIOLATION;
+            else memcpy( info, &skdi, len );
+        }
+        else ret = STATUS_INFO_LENGTH_MISMATCH;
+        break;
+    }
+
     case SystemRegistryQuotaInformation:  /* 37 */
     {
         /* Something to do with the size of the registry             *
diff --git a/include/winternl.h b/include/winternl.h
index f832729f985..c632328b322 100644
--- a/include/winternl.h
+++ b/include/winternl.h
@@ -2485,6 +2485,12 @@ typedef struct _SYSTEM_KERNEL_DEBUGGER_INFORMATION {
    BOOLEAN  DebuggerNotPresent;
 } SYSTEM_KERNEL_DEBUGGER_INFORMATION, *PSYSTEM_KERNEL_DEBUGGER_INFORMATION;

+typedef struct _SYSTEM_KERNEL_DEBUGGER_INFORMATION_EX {
+    BOOLEAN  DebuggerAllowed;
+    BOOLEAN  DebuggerEnabled;
+    BOOLEAN  DebuggerPresent;
+} SYSTEM_KERNEL_DEBUGGER_INFORMATION_EX, *PSYSTEM_KERNEL_DEBUGGER_INFORMATION_EX;
+
 typedef struct _VM_COUNTERS
 {
     SIZE_T PeakVirtualSize;