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Fix for issue with closing non-existent or already closed handle

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svn path=/trunk/; revision=1165
This commit is contained in:
David Welch 2000-05-27 12:48:59 +00:00
parent 06784b2b11
commit 279b8390a0
3 changed files with 39 additions and 19 deletions
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2
reactos/ChangeLog
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@ -1,3 +1,5 @@
27/5/00: Fixed issue with closing non-existent or already closed handle
26/1/99: ZwCreateProcess now maps ntdll rather than the user-mode code
9/6/99: Implemented ZwOpenProcess

4
reactos/lib/ntdll/ldr/startup.c
View file

@ -1,4 +1,4 @@
/* $Id: startup.c,v 1.24 2000/05/25 15:51:16 ekohl Exp $
/* $Id: startup.c,v 1.25 2000/05/27 12:48:59 dwelch Exp $
*
* COPYRIGHT: See COPYING in the top level directory
* PROJECT: ReactOS kernel
@ -18,7 +18,7 @@
#include <csrss/csrss.h>
#include <ntdll/csr.h>
//#define NDEBUG
#define NDEBUG
#include <ntdll/ntdll.h>

52
reactos/ntoskrnl/ob/handle.c
View file

@ -1,4 +1,4 @@
/* $Id: handle.c,v 1.21 2000/05/09 21:30:06 ekohl Exp $
/* $Id: handle.c,v 1.22 2000/05/27 12:48:59 dwelch Exp $
*
* COPYRIGHT: See COPYING in the top level directory
* PROJECT: ReactOS kernel
@ -336,21 +336,35 @@ PVOID ObDeleteHandle(PEPROCESS Process, HANDLE Handle)
KeAcquireSpinLock(&HandleTable->ListLock, &oldIrql);
Rep = ObpGetObjectByHandle(HandleTable, Handle);
ObjectBody = Rep->ObjectBody;
Header = BODY_TO_HEADER(ObjectBody);
BODY_TO_HEADER(ObjectBody)->HandleCount--;
ObReferenceObjectByPointer(ObjectBody,
GENERIC_ALL,
NULL,
UserMode);
Rep->ObjectBody = NULL;
KeReleaseSpinLock(&HandleTable->ListLock, oldIrql);
if ((Header->ObjectType != NULL) &&
(Header->ObjectType->Close != NULL))
if (Rep == NULL)
{
Header->ObjectType->Close(ObjectBody, Header->HandleCount);
KeReleaseSpinLock(&HandleTable->ListLock, oldIrql);
return(NULL);
}
ObjectBody = Rep->ObjectBody;
DPRINT("ObjectBody %x\n", ObjectBody);
if (ObjectBody != NULL)
{
Header = BODY_TO_HEADER(ObjectBody);
BODY_TO_HEADER(ObjectBody)->HandleCount--;
ObReferenceObjectByPointer(ObjectBody,
GENERIC_ALL,
NULL,
UserMode);
Rep->ObjectBody = NULL;
KeReleaseSpinLock(&HandleTable->ListLock, oldIrql);
if ((Header->ObjectType != NULL) &&
(Header->ObjectType->Close != NULL))
{
Header->ObjectType->Close(ObjectBody, Header->HandleCount);
}
}
else
{
KeReleaseSpinLock(&HandleTable->ListLock, oldIrql);
}
DPRINT("Finished ObDeleteHandle()\n");
@ -576,13 +590,17 @@ NTSTATUS STDCALL NtClose(HANDLE Handle)
DPRINT("NtClose(Handle %x)\n",Handle);
ObjectBody = ObDeleteHandle(PsGetCurrentProcess(), Handle);
if (ObjectBody == NULL)
{
return(STATUS_HANDLES_CLOSED);
}
Header = BODY_TO_HEADER(ObjectBody);
DPRINT("Dereferencing %x\n", ObjectBody);
ObDereferenceObject(ObjectBody);
return STATUS_SUCCESS;
return(STATUS_SUCCESS);
}