Nikolay Sivov : ntdll: Support pinning module refcount with LdrAddRefDll() .

[Alexandre Julliard]

Module: wine
Branch: stable
Commit: b11f882ec24f2a17f278ccb65669c927138739b5
URL:    http://source.winehq.org/git/wine.git/?a=commit;h=b11f882ec24f2a17f278ccb65669c927138739b5

Author: Nikolay Sivov <nsivov at codeweavers.com>
Date:   Mon Oct 14 08:07:58 2013 +0400

ntdll: Support pinning module refcount with LdrAddRefDll().

(cherry picked from commit 146ff49161fb35095ae9ac6f4c40281cd8f748f4)

---

 dlls/ntdll/loader.c |    7 +++++--
 include/winternl.h  |    3 +++
 2 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/dlls/ntdll/loader.c b/dlls/ntdll/loader.c
index 9642f62..5c4121f 100644
--- a/dlls/ntdll/loader.c
+++ b/dlls/ntdll/loader.c
@@ -2130,13 +2130,16 @@ NTSTATUS WINAPI LdrAddRefDll( ULONG flags, HMODULE module )
     NTSTATUS ret = STATUS_SUCCESS;
     WINE_MODREF *wm;
 
-    if (flags) FIXME( "%p flags %x not implemented\n", module, flags );
+    if (flags & ~LDR_ADDREF_DLL_PIN) FIXME( "%p flags %x not implemented\n", module, flags );
 
     RtlEnterCriticalSection( &loader_section );
 
     if ((wm = get_modref( module )))
     {
-        if (wm->ldr.LoadCount != -1) wm->ldr.LoadCount++;
+        if (flags & LDR_ADDREF_DLL_PIN)
+            wm->ldr.LoadCount = -1;
+        else
+            if (wm->ldr.LoadCount != -1) wm->ldr.LoadCount++;
         TRACE( "(%s) ldr.LoadCount: %d\n", debugstr_w(wm->ldr.BaseDllName.Buffer), wm->ldr.LoadCount );
     }
     else ret = STATUS_INVALID_PARAMETER;
diff --git a/include/winternl.h b/include/winternl.h
index 2a0537c..85aec65 100644
--- a/include/winternl.h
+++ b/include/winternl.h
@@ -1970,6 +1970,9 @@ typedef struct _LDR_MODULE
 #define LDR_DONT_RESOLVE_REFS           0x40000000
 #define LDR_WINE_INTERNAL               0x80000000
 
+/* flag for LdrAddRefDll */
+#define LDR_ADDREF_DLL_PIN              0x00000001
+
 /* FIXME: to be checked */
 #define MAXIMUM_FILENAME_LENGTH 256