[ros-diffs] [reactos] 01/07: [NTOSKRNL] Implement ObIsLUIDDeviceMapsEnabled and call it in NtQueryInformationProcess

[Pierre Schweitzer]

https://git.reactos.org/?p=reactos.git;a=commitdiff;h=b16a07fa6913184abe2d2…

commit b16a07fa6913184abe2d2bee321f8f7aef919808
Author:     Pierre Schweitzer <pierre(a)reactos.org>
AuthorDate: Sat Jun 1 14:56:28 2019 +0200
Commit:     Pierre Schweitzer <pierre(a)reactos.org>
CommitDate: Sat Jun 1 14:56:28 2019 +0200

    [NTOSKRNL] Implement ObIsLUIDDeviceMapsEnabled and call it in
NtQueryInformationProcess
---
 ntoskrnl/include/internal/ob.h |  7 +++++++
 ntoskrnl/ob/devicemap.c        | 11 +++++++++++
 ntoskrnl/ob/obdir.c            |  3 +--
 ntoskrnl/ob/obname.c           |  3 ---
 ntoskrnl/ps/query.c            |  4 ++--
 5 files changed, 21 insertions(+), 7 deletions(-)

diff --git a/ntoskrnl/include/internal/ob.h b/ntoskrnl/include/internal/ob.h
index ddbfeb42d92..132b47f5a6b 100644
--- a/ntoskrnl/include/internal/ob.h
+++ b/ntoskrnl/include/internal/ob.h
@@ -429,6 +429,12 @@ ObpCreateDosDevicesDirectory(
     VOID
 );
 
+ULONG
+NTAPI
+ObIsLUIDDeviceMapsEnabled(
+    VOID
+);
+
 //
 // Security descriptor cache functions
 //
@@ -621,6 +627,7 @@ extern ULONG ObpUnsecureGlobalNamesLength;
 extern ULONG ObpObjectSecurityMode;
 extern ULONG ObpProtectionMode;
 extern ULONG ObpLUIDDeviceMapsDisabled;
+extern ULONG ObpLUIDDeviceMapsEnabled;
 
 //
 // Inlined Functions
diff --git a/ntoskrnl/ob/devicemap.c b/ntoskrnl/ob/devicemap.c
index dd501f134f8..a4cd5afbfae 100644
--- a/ntoskrnl/ob/devicemap.c
+++ b/ntoskrnl/ob/devicemap.c
@@ -13,6 +13,9 @@
 #define NDEBUG
 #include <debug.h>
 
+ULONG ObpLUIDDeviceMapsDisabled;
+ULONG ObpLUIDDeviceMapsEnabled;
+
 /* PRIVATE FUNCTIONS ******************************************************/
 
 NTSTATUS
@@ -249,6 +252,14 @@ ObQueryDeviceMapInformation(IN PEPROCESS Process,
 }
 
 
+ULONG
+NTAPI
+ObIsLUIDDeviceMapsEnabled(VOID)
+{
+    return ObpLUIDDeviceMapsEnabled;
+}
+
+
 #if 0
 NTSTATUS
 NTAPI
diff --git a/ntoskrnl/ob/obdir.c b/ntoskrnl/ob/obdir.c
index 3c62411fed5..f8e3a36a06a 100644
--- a/ntoskrnl/ob/obdir.c
+++ b/ntoskrnl/ob/obdir.c
@@ -17,7 +17,6 @@
 #define NDEBUG
 #include <debug.h>
 
-BOOLEAN ObpLUIDDeviceMapsEnabled;
 POBJECT_TYPE ObpDirectoryObjectType = NULL;
 
 /* PRIVATE FUNCTIONS ******************************************************/
@@ -141,7 +140,7 @@ ObpLookupEntryDirectory(IN POBJECT_DIRECTORY Directory,
     PAGED_CODE();
 
     /* Check if we should search the shadow directory */
-    if (!ObpLUIDDeviceMapsEnabled) SearchShadow = FALSE;
+    if (ObpLUIDDeviceMapsEnabled == 0) SearchShadow = FALSE;
 
     /* Fail if we don't have a directory or name */
     if (!(Directory) || !(Name)) goto Quickie;
diff --git a/ntoskrnl/ob/obname.c b/ntoskrnl/ob/obname.c
index f05a06805d0..5700d43d5ca 100644
--- a/ntoskrnl/ob/obname.c
+++ b/ntoskrnl/ob/obname.c
@@ -32,9 +32,6 @@ UNICODE_STRING ObpDosDevicesShortName =
 WCHAR ObpUnsecureGlobalNamesBuffer[128] = {0};
 ULONG ObpUnsecureGlobalNamesLength = sizeof(ObpUnsecureGlobalNamesBuffer);
 
-ULONG ObpLUIDDeviceMapsDisabled;
-ULONG ObpLUIDDeviceMapsEnabled;
-
 /* PRIVATE FUNCTIONS *********************************************************/
 
 INIT_FUNCTION
diff --git a/ntoskrnl/ps/query.c b/ntoskrnl/ps/query.c
index 1f605be3349..12036fb01a1 100644
--- a/ntoskrnl/ps/query.c
+++ b/ntoskrnl/ps/query.c
@@ -911,8 +911,8 @@ NtQueryInformationProcess(IN HANDLE ProcessHandle,
             /* Protect write in SEH */
             _SEH2_TRY
             {
-                /* Return FALSE -- we don't support this */
-                *(PULONG)ProcessInformation = FALSE;
+                /* Query Ob */
+                *(PULONG)ProcessInformation = ObIsLUIDDeviceMapsEnabled();
             }
             _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
             {