From 0b2bbd1125a935fb50e979812d3a34cfde500882 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Herm=C3=A8s=20B=C3=A9lusca-Ma=C3=AFto?=
 <hermes.belusca-maito@reactos.org>
Date: Mon, 13 Nov 2017 00:27:41 +0100
Subject: [PATCH] [NTOS] Addendum to da81345: Fix checks when a hive is opened
 in shared mode.

---
 ntoskrnl/config/cminit.c   | 14 ++++++++------
 ntoskrnl/config/cmsysini.c |  7 +++++--
 2 files changed, 13 insertions(+), 8 deletions(-)

diff --git a/ntoskrnl/config/cminit.c b/ntoskrnl/config/cminit.c
index 46ab61e4b30..bf055fd914d 100644
--- a/ntoskrnl/config/cminit.c
+++ b/ntoskrnl/config/cminit.c
@@ -38,15 +38,17 @@ CmpInitializeHive(OUT PCMHIVE *CmHive,
 
     /*
      * The following are invalid:
-     * An external hive that is also internal.
-     * A log hive that's not a primary hive too.
-     * A volatile hive that's linked to permanent storage.
-     * An in-memory initialization without hive data.
-     * A log hive that's not linked to a correct file type.
+     * - An external hive that is also internal.
+     * - A log hive that is not a primary hive too.
+     * - A volatile hive that is linked to permanent storage,
+     *   unless this hive is a shared system hive.
+     * - An in-memory initialization without hive data.
+     * - A log hive that is not linked to a correct file type.
      */
     if (((External) && ((Primary) || (Log))) ||
         ((Log) && !(Primary)) ||
-        ((HiveFlags & HIVE_VOLATILE) && ((Primary) || (External) || (Log))) ||
+        (!(CmpShareSystemHives) && (HiveFlags & HIVE_VOLATILE) &&
+            ((Primary) || (External) || (Log))) ||
         ((OperationType == HINIT_MEMORY) && (!HiveData)) ||
         ((Log) && (FileType != HFILE_TYPE_LOG)))
     {
diff --git a/ntoskrnl/config/cmsysini.c b/ntoskrnl/config/cmsysini.c
index 112543fac7c..a433485eb25 100644
--- a/ntoskrnl/config/cmsysini.c
+++ b/ntoskrnl/config/cmsysini.c
@@ -1297,9 +1297,12 @@ CmpLoadHiveThread(IN PVOID StartContext)
                                      &CmpMachineHiveList[i].Allocate,
                                      0);
         if (!(NT_SUCCESS(Status)) ||
-            (!(CmHive->FileHandles[HFILE_TYPE_LOG]) && !(CmpMiniNTBoot))) // HACK
+            (!(CmpShareSystemHives) && !(CmHive->FileHandles[HFILE_TYPE_LOG])))
         {
-            /* We failed or couldn't get a log file, raise a hard error */
+            /*
+             * We failed, or could not get a log file (unless
+             * the hive is shared), raise a hard error.
+             */
             ErrorParameters = &FileName;
             NtRaiseHardError(STATUS_CANNOT_LOAD_REGISTRY_FILE,
                              1,