[tkreuzer] 61591: [NTOSKRNL] Implement CmpLinkKeyToHive and create missing HKLM\Security\SAM -> HKLM\SAM\SAM and HKU\S-1-5-18 -> HKU\.Default links.

Author: tkreuzer
Date: Sat Jan 11 23:13:48 2014
New Revision: 61591

URL: http://svn.reactos.org/svn/reactos?rev=61591&view=rev
Log:
[NTOSKRNL]
Implement CmpLinkKeyToHive and create missing HKLM\Security\SAM -> HKLM\SAM\SAM and
HKU\S-1-5-18 -> HKU\.Default links.

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 Jan 11 23:13:48 2014
@@ -35,6 +35,71 @@
 extern BOOLEAN CmFirstTime;
 
 /* FUNCTIONS ******************************************************************/
+
+BOOLEAN
+NTAPI
+CmpLinkKeyToHive(
+    _In_z_ PWSTR LinkKeyName,
+    _In_z_ PWSTR TargetKeyName)
+{
+    OBJECT_ATTRIBUTES ObjectAttributes;
+    UNICODE_STRING LinkKeyName_U;
+    HANDLE TargetKeyHandle;
+    ULONG Disposition;
+    NTSTATUS Status;
+    PAGED_CODE();
+
+    /* Initialize the object attributes */
+    RtlInitUnicodeString(&LinkKeyName_U, LinkKeyName);
+    InitializeObjectAttributes(&ObjectAttributes,
+                               &LinkKeyName_U,
+                               OBJ_CASE_INSENSITIVE | OBJ_KERNEL_HANDLE,
+                               NULL,
+                               NULL);
+
+    /* Create the link key */
+    Status = ZwCreateKey(&TargetKeyHandle,
+                         KEY_CREATE_LINK,
+                         &ObjectAttributes,
+                         0,
+                         NULL,
+                         REG_OPTION_VOLATILE | REG_OPTION_CREATE_LINK,
+                         &Disposition);
+    if (!NT_SUCCESS(Status))
+    {
+        DPRINT1("CM: CmpLinkKeyToHive: couldn't create %S Status =
0x%lx\n",
+                LinkKeyName, Status);
+        return FALSE;
+    }
+
+    /* Check if the new key was actually created */
+    if (Disposition != REG_CREATED_NEW_KEY)
+    {
+        DPRINT1("CM: CmpLinkKeyToHive: %S already exists!\n", LinkKeyName);
+        ZwClose(TargetKeyHandle);
+        return FALSE;
+    }
+
+    /* Set the target key name as link target */
+    Status = ZwSetValueKey(TargetKeyHandle,
+                           &CmSymbolicLinkValueName,
+                           0,
+                           REG_LINK,
+                           TargetKeyName,
+                           wcslen(TargetKeyName) * sizeof(WCHAR));
+
+    /* Close the link key handle */
+    ObCloseHandle(TargetKeyHandle, KernelMode);
+
+    if (!NT_SUCCESS(Status))
+    {
+        DPRINT1("CM: CmpLinkKeyToHive: couldn't create symbolic link for
%S\n",
+                TargetKeyName);
+        return FALSE;
+    }
+
+    return TRUE;
+}
 
 VOID
 NTAPI
@@ -1389,9 +1454,13 @@
     /* Get rid of the SD */
     ExFreePoolWithTag(SecurityDescriptor, TAG_CM);
 
-    /* FIXME: Link SECURITY to SAM */
-
-    /* FIXME: Link S-1-5-18 to .Default */
+    /* Link SECURITY to SAM */
+    CmpLinkKeyToHive(L"\\Registry\\Machine\\Security\\SAM",
+                     L"\\Registry\\Machine\\SAM\\SAM");
+
+    /* Link S-1-5-18 to .Default */
+    CmpLinkKeyToHive(L"\\Registry\\User\\S-1-5-18",
+                     L"\\Registry\\User\\.Default");
 }
 
 BOOLEAN