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- Fix NtQueryDirectoryObject for empty directories.

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svn path=/trunk/; revision=10665
This commit is contained in:
Filip Navara 2004-08-24 17:07:27 +00:00
parent 1230297d02
commit aaa5aaec7e
1 changed files with 5 additions and 4 deletions
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9
reactos/ntoskrnl/ob/dirobj.c
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@ -1,4 +1,4 @@
/* $Id: dirobj.c,v 1.24 2004/08/20 22:38:10 gvg Exp $ /* $Id: dirobj.c,v 1.25 2004/08/24 17:07:27 navaraf Exp $
* *
* COPYRIGHT: See COPYING in the top level directory * COPYRIGHT: See COPYING in the top level directory
* PROJECT: ReactOS kernel * PROJECT: ReactOS kernel
@ -266,9 +266,11 @@ NtQueryDirectoryObject (IN HANDLE DirectoryHandle,
} }
/* /*
* If there's no room to even copy a single entry, return error status * If there's no room to even copy a single entry then return error
* status.
*/ */
if (0 == DirectoryCount) if (0 == DirectoryCount &&
!(IsListEmpty(&dir->head) && BufferLength >= RequiredSize))
{ {
KeReleaseSpinLock(&dir->Lock, OldLevel); KeReleaseSpinLock(&dir->Lock, OldLevel);
ObDereferenceObject(dir); ObDereferenceObject(dir);
@ -276,7 +278,6 @@ NtQueryDirectoryObject (IN HANDLE DirectoryHandle,
{ {
Status = MmCopyToCaller(UnsafeReturnLength, &RequiredSize, sizeof(ULONG)); Status = MmCopyToCaller(UnsafeReturnLength, &RequiredSize, sizeof(ULONG));
} }
return NT_SUCCESS(Status) ? STATUS_BUFFER_TOO_SMALL : Status; return NT_SUCCESS(Status) ? STATUS_BUFFER_TOO_SMALL : Status;
} }