ReactOS Project - reactos.git/commit

author	Pierre Schweitzer <pierre@reactos.org>
	Thu, 28 Mar 2019 21:29:22 +0000 (22:29 +0100)
committer	Pierre Schweitzer <pierre@reactos.org>
	Thu, 28 Mar 2019 21:39:38 +0000 (22:39 +0100)
commit	ce6488df31de64092f41aa78bb87e829ded3dc6b
tree	536a3ca2f678d4fc988c5e35a7dfdf3dac26f67c	tree
parent	f8e0b4675f1293acf6f5b5fcddb5083636ee3d12	commit \| diff

[NTOSKRNL] Add a quick path for FileFsDeviceInformation in NtQueryVolumeInformationFile

This allows querying volume information without issuing an IRP to the owner device.
The kernel is supposed to already have all the required information to return
to the caller.

Side effect: this allows querying volume information for devices not implementing
IRP_MJ_QUERY_VOLUME_INFORMATION such as null.sys
This fixes opening null device in Python.

Fix based on debugging by Maxim Smirnov in PR #1442

CORE-14551