[tkreuzer] 53982: [FREELDR] Fix a bug, when the memory for a file cluster chain record was freed from the heap although it was still in use. Instead free the buffer when the file is closed.

Author: tkreuzer
Date: Mon Oct  3 22:59:33 2011
New Revision: 53982
URL: http://svn.reactos.org/svn/reactos?rev=53982&view=rev
Log:
[FREELDR]
Fix a bug, when the memory for a file cluster chain record was freed from the heap
although it was still in use. Instead free the buffer when the file is closed.
Modified:
    trunk/reactos/boot/freeldr/freeldr/fs/fat.c
Modified: trunk/reactos/boot/freeldr/freeldr/fs/fat.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/boot/freeldr/freeldr/fs/fa…
==============================================================================
--- trunk/reactos/boot/freeldr/freeldr/fs/fat.c [iso-8859-1] (original)
+++ trunk/reactos/boot/freeldr/freeldr/fs/fat.c [iso-8859-1] Mon Oct  3 22:59:33 2011
@@ -804,8 +804,9 @@
                                return ENOTDIR;
                        }
                        DirectoryStartCluster = FatFileInfo.FileFatChain[0];
-               }
-               MmHeapFree(FatFileInfo.FileFatChain);
+                       MmHeapFree(FatFileInfo.FileFatChain);
+                       FatFileInfo.FileFatChain = NULL;
+               }
        }
        memcpy(FatFileInfoPointer, &FatFileInfo, sizeof(FAT_FILE_INFO));
@@ -1332,6 +1333,7 @@
 {
        PFAT_FILE_INFO FileHandle = FsGetDeviceSpecific(FileId);
+       if (FileHandle->FileFatChain) MmHeapFree(FileHandle->FileFatChain);
        MmHeapFree(FileHandle);
        return ESUCCESS;