From a71e1f3760bfaada8e3cc0fd4d0290dd6f7fc9c2 Mon Sep 17 00:00:00 2001
From: Pierre Schweitzer <pierre@reactos.org>
Date: Sun, 26 Oct 2014 20:29:00 +0000
Subject: [PATCH] [FASTFAT] Make sure the appropriate resource is exclusively
 acquired when playing with FCB references

svn path=/trunk/; revision=65033
---
 reactos/drivers/filesystems/fastfat/fcb.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/reactos/drivers/filesystems/fastfat/fcb.c b/reactos/drivers/filesystems/fastfat/fcb.c
index 0b5f24a345b..c698ba72efe 100644
--- a/reactos/drivers/filesystems/fastfat/fcb.c
+++ b/reactos/drivers/filesystems/fastfat/fcb.c
@@ -292,6 +292,8 @@ vfatGrabFCB(
     PDEVICE_EXTENSION pVCB,
     PVFATFCB pFCB)
 {
+    ASSERT(ExIsResourceAcquiredExclusive(&pVCB->DirResource));
+
     ++pFCB->RefCount;
 }
 
@@ -305,6 +307,8 @@ vfatReleaseFCB(
     DPRINT("releasing FCB at %p: %wZ, refCount:%d\n",
            pFCB, &pFCB->PathNameU, pFCB->RefCount);
 
+    ASSERT(ExIsResourceAcquiredExclusive(&pVCB->DirResource));
+
     while (pFCB)
     {
         pFCB->RefCount--;