[ekohl] 52184: [NTOSKRNL] - Do not create/open the CurrentVersion key in a single call to NtCreateKey because its parent key might not exist yet. See issue #6302 for more details.

Author: ekohl
Date: Sat Jun 11 11:58:46 2011
New Revision: 52184
URL: http://svn.reactos.org/svn/reactos?rev=52184&view=rev
Log:
[NTOSKRNL]
- Do not create/open the CurrentVersion key in a single call to NtCreateKey  because its
parent key might not exist yet.
See issue #6302 for more details.
Modified:
    trunk/reactos/ntoskrnl/config/cmsysini.c
Modified: trunk/reactos/ntoskrnl/config/cmsysini.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/ntoskrnl/config/cmsysini.c…
==============================================================================
--- trunk/reactos/ntoskrnl/config/cmsysini.c [iso-8859-1] (original)
+++ trunk/reactos/ntoskrnl/config/cmsysini.c [iso-8859-1] Sat Jun 11 11:58:46 2011
@@ -1946,13 +1946,16 @@
     UNICODE_STRING KeyName;
     UNICODE_STRING ValueName;
     UNICODE_STRING ValueData;
-    HANDLE KeyHandle;
+    HANDLE SoftwareKeyHandle = NULL;
+    HANDLE MicrosoftKeyHandle = NULL;
+    HANDLE WindowsNtKeyHandle = NULL;
+    HANDLE CurrentVersionKeyHandle = NULL;
     WCHAR Buffer[128];
     NTSTATUS Status;
     /* Open the 'CurrentVersion' key */
     RtlInitUnicodeString(&KeyName,
-                         L"\\REGISTRY\\MACHINE\\SOFTWARE\\Microsoft\\Windows
NT\\CurrentVersion");
+                         L"\\REGISTRY\\MACHINE\\SOFTWARE");
     InitializeObjectAttributes(&ObjectAttributes,
                                &KeyName,
@@ -1960,7 +1963,7 @@
                                NULL,
                                NULL);
-    Status = NtCreateKey(&KeyHandle,
+    Status = NtCreateKey(&SoftwareKeyHandle,
                          KEY_CREATE_SUB_KEY,
                          &ObjectAttributes,
                          0,
@@ -1973,6 +1976,75 @@
         return;
     }
+    /* Open the 'CurrentVersion' key */
+    RtlInitUnicodeString(&KeyName,
+                         L"Microsoft");
+
+    InitializeObjectAttributes(&ObjectAttributes,
+                               &KeyName,
+                               OBJ_CASE_INSENSITIVE,
+                               SoftwareKeyHandle,
+                               NULL);
+
+    Status = NtCreateKey(&MicrosoftKeyHandle,
+                         KEY_CREATE_SUB_KEY,
+                         &ObjectAttributes,
+                         0,
+                         NULL,
+                         0,
+                         NULL);
+    if (!NT_SUCCESS(Status))
+    {
+        DPRINT1("Failed to create key %wZ (Status: %08lx)\n", &KeyName,
Status);
+        goto done;
+    }
+
+    /* Open the 'CurrentVersion' key */
+    RtlInitUnicodeString(&KeyName,
+                         L"Windows NT");
+
+    InitializeObjectAttributes(&ObjectAttributes,
+                               &KeyName,
+                               OBJ_CASE_INSENSITIVE,
+                               MicrosoftKeyHandle,
+                               NULL);
+
+    Status = NtCreateKey(&WindowsNtKeyHandle,
+                         KEY_CREATE_SUB_KEY,
+                         &ObjectAttributes,
+                         0,
+                         NULL,
+                         0,
+                         NULL);
+    if (!NT_SUCCESS(Status))
+    {
+        DPRINT1("Failed to create key %wZ (Status: %08lx)\n", &KeyName,
Status);
+        goto done;
+    }
+
+    /* Open the 'CurrentVersion' key */
+    RtlInitUnicodeString(&KeyName,
+                         L"CurrentVersion");
+
+    InitializeObjectAttributes(&ObjectAttributes,
+                               &KeyName,
+                               OBJ_CASE_INSENSITIVE,
+                               WindowsNtKeyHandle,
+                               NULL);
+
+    Status = NtCreateKey(&CurrentVersionKeyHandle,
+                         KEY_CREATE_SUB_KEY | KEY_SET_VALUE,
+                         &ObjectAttributes,
+                         0,
+                         NULL,
+                         0,
+                         NULL);
+    if (!NT_SUCCESS(Status))
+    {
+        DPRINT1("Failed to create key %wZ (Status: %08lx)\n", &KeyName,
Status);
+        goto done;
+    }
+
     /* Set the 'CurrentType' value */
     RtlInitUnicodeString(&ValueName,
                          L"CurrentType");
@@ -1994,15 +2066,26 @@
     RtlInitUnicodeString(&ValueData,
                          Buffer);
-    NtSetValueKey(KeyHandle,
+    NtSetValueKey(CurrentVersionKeyHandle,
                   &ValueName,
                   0,
                   REG_SZ,
                   ValueData.Buffer,
                   ValueData.Length + sizeof(WCHAR));
-    /* Close the key */
-    NtClose(KeyHandle);
+done:;
+    /* Close the keys */
+    if (CurrentVersionKeyHandle != NULL)
+        NtClose(CurrentVersionKeyHandle);
+
+    if (WindowsNtKeyHandle != NULL)
+        NtClose(WindowsNtKeyHandle);
+
+    if (MicrosoftKeyHandle != NULL)
+        NtClose(MicrosoftKeyHandle);
+
+    if (SoftwareKeyHandle != NULL)
+        NtClose(SoftwareKeyHandle);
 }
 /* EOF */