[tfaber] 70304: [FASTFAT] - Always use the full path name when looking for FCB hashes CORE-10483 #resolve

Author: tfaber
Date: Tue Dec  8 12:57:45 2015
New Revision: 70304

URL: http://svn.reactos.org/svn/reactos?rev=70304&view=rev
Log:
[FASTFAT]
- Always use the full path name when looking for FCB hashes
CORE-10483 #resolve

Modified:
    trunk/reactos/drivers/filesystems/fastfat/fcb.c

Modified: trunk/reactos/drivers/filesystems/fastfat/fcb.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/drivers/filesystems/fastfa…
==============================================================================
--- trunk/reactos/drivers/filesystems/fastfat/fcb.c	[iso-8859-1] (original)
+++ trunk/reactos/drivers/filesystems/fastfat/fcb.c	[iso-8859-1] Tue Dec  8 12:57:45 2015
@@ -437,6 +437,7 @@
 
     DPRINT("'%wZ'\n", PathNameU);
 
+    ASSERT(PathNameU->Length >= sizeof(WCHAR) && PathNameU->Buffer[0] ==
L'\\');
     Hash = vfatNameHash(0, PathNameU);
 
     entry = pVCB->FcbHashTable[Hash % pVCB->HashTableSize];
@@ -812,14 +813,15 @@
     DPRINT("vfatGetFCBForFile (%p,%p,%p,%wZ)\n",
            pVCB, pParentFCB, pFCB, pFileNameU);
 
-    FileNameU.Buffer = NameBuffer;
-    FileNameU.MaximumLength = sizeof(NameBuffer);
-    RtlCopyUnicodeString(&FileNameU, pFileNameU);
+    RtlInitEmptyUnicodeString(&FileNameU, NameBuffer, sizeof(NameBuffer));
 
     parentFCB = *pParentFCB;
 
     if (parentFCB == NULL)
     {
+        /* Passed-in name is the full name */
+        RtlCopyUnicodeString(&FileNameU, pFileNameU);
+
         //  Trivial case, open of the root directory on volume
         if (RtlEqualUnicodeString(&FileNameU, &RootNameU, FALSE))
         {
@@ -888,9 +890,20 @@
     }
     else
     {
+        /* Make absolute path */
+        RtlCopyUnicodeString(&FileNameU, &parentFCB->PathNameU);
+        curr = FileNameU.Buffer + FileNameU.Length / sizeof(WCHAR) - 1;
+        if (*curr != L'\\')
+        {
+            RtlAppendUnicodeToString(&FileNameU, L"\\");
+            curr++;
+        }
+        ASSERT(*curr == L'\\');
+        RtlAppendUnicodeStringToString(&FileNameU, pFileNameU);
+
         FCB = parentFCB;
         parentFCB = NULL;
-        prev = curr = FileNameU.Buffer - 1;
+        prev = curr;
         last = FileNameU.Buffer + FileNameU.Length / sizeof(WCHAR) - 1;
     }