[pschweitzer] 74781: [UDFS] Our current storage stack iteration considers that any CDROM is read-only and forces it. Reflect that fact in UDFS; we cannot assume that our device won't be readonly. C...

Author: pschweitzer
Date: Sat Jun  3 18:29:44 2017
New Revision: 74781

URL: http://svn.reactos.org/svn/reactos?rev=74781&view=rev
Log:
[UDFS]
Our current storage stack iteration considers that any CDROM is read-only and forces it.
Reflect that fact in UDFS; we cannot assume that our device won't be readonly.

CORE-4375

Modified:
    trunk/reactos/drivers/filesystems/udfs/volinfo.cpp

Modified: trunk/reactos/drivers/filesystems/udfs/volinfo.cpp
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/drivers/filesystems/udfs/v…
==============================================================================
--- trunk/reactos/drivers/filesystems/udfs/volinfo.cpp	[iso-8859-1] (original)
+++ trunk/reactos/drivers/filesystems/udfs/volinfo.cpp	[iso-8859-1] Sat Jun  3 18:29:44
2017
@@ -462,8 +462,15 @@
 
     KdPrint(("  UDFQueryFsDeviceInfo: \n"));
     //  Update the output buffer.
-    ASSERT(! (Vcb->TargetDeviceObject->Characteristics & (FILE_READ_ONLY_DEVICE
| FILE_WRITE_ONCE_MEDIA)));
-    Buffer->Characteristics = Vcb->TargetDeviceObject->Characteristics &
~(FILE_READ_ONLY_DEVICE | FILE_WRITE_ONCE_MEDIA);
+    if (Vcb->TargetDeviceObject->DeviceType != FILE_DEVICE_CD_ROM &&
Vcb->TargetDeviceObject->DeviceType != FILE_DEVICE_DVD)
+    {
+        ASSERT(! (Vcb->TargetDeviceObject->Characteristics &
(FILE_READ_ONLY_DEVICE | FILE_WRITE_ONCE_MEDIA)));
+        Buffer->Characteristics = Vcb->TargetDeviceObject->Characteristics &
~(FILE_READ_ONLY_DEVICE | FILE_WRITE_ONCE_MEDIA);
+    }
+    else
+    {
+        Buffer->Characteristics = Vcb->TargetDeviceObject->Characteristics;
+    }
     Buffer->DeviceType = Vcb->TargetDeviceObject->DeviceType;
     KdPrint(("    Characteristics %x, DeviceType %x\n",
Buffer->Characteristics, Buffer->DeviceType));
     //  Adjust the length variable