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Added testing for inheritable objects in NtDuplicateObject/ObCreateHandleTable.

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Modified ObCreateHandleTable. The target handle table has now the same layout as the source table.

svn path=/trunk/; revision=2933
This commit is contained in:
Hartmut Birr 2002-05-07 22:38:29 +00:00
parent 136a40d069
commit 8844bece5a
1 changed files with 46 additions and 34 deletions
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80
reactos/ntoskrnl/ob/handle.c
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@ -16,7 +16,7 @@
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/* $Id: handle.c,v 1.36 2002/04/07 09:24:36 sedwards Exp $
/* $Id: handle.c,v 1.37 2002/05/07 22:38:29 hbirr Exp $
*
* COPYRIGHT: See COPYING in the top level directory
* PROJECT: ReactOS kernel
@ -81,7 +81,7 @@ static PHANDLE_REP ObpGetObjectByHandle(PHANDLE_TABLE HandleTable, HANDLE h)
*/
{
PLIST_ENTRY current;
unsigned int handle = (((unsigned int)h) - 1) >> 2;
unsigned int handle = (((unsigned int)h) >> 2) - 1;
unsigned int count=handle/HANDLE_BLOCK_ENTRIES;
HANDLE_BLOCK* blk = NULL;
unsigned int i;
@ -192,6 +192,14 @@ NTSTATUS STDCALL NtDuplicateObject (IN HANDLE SourceProcessHandle,
KeReleaseSpinLock(&SourceProcess->HandleTable.ListLock, oldIrql);
if (!SourceHandleRep->Inherit)
{
ObDereferenceObject(TargetProcess);
ObDereferenceObject(SourceProcess);
ObDereferenceObject(ObjectBody);
return STATUS_INVALID_HANDLE;
}
ObCreateHandle(TargetProcess,
ObjectBody,
DesiredAccess,
@ -255,7 +263,7 @@ VOID ObCloseAllHandles(PEPROCESS Process)
0,
NULL,
UserMode);
Header->HandleCount--;
InterlockedDecrement(&Header->HandleCount);
current->handles[i].ObjectBody = NULL;
KeReleaseSpinLock(&HandleTable->ListLock, oldIrql);
@ -320,11 +328,12 @@ VOID ObCreateHandleTable(PEPROCESS Parent,
* Process = Process whose handle table is to be created
*/
{
PHANDLE_TABLE ParentHandleTable;
PHANDLE_TABLE ParentHandleTable, HandleTable;
KIRQL oldIrql;
PLIST_ENTRY parent_current;
ULONG i;
PHANDLE_BLOCK current_block, new_block;
DPRINT("ObCreateHandleTable(Parent %x, Inherit %d, Process %x)\n",
Parent,Inherit,Process);
@ -334,41 +343,44 @@ VOID ObCreateHandleTable(PEPROCESS Parent,
if (Parent != NULL)
{
ParentHandleTable = &Parent->HandleTable;
HandleTable = &Process->HandleTable;
KeAcquireSpinLock(&Parent->HandleTable.ListLock, &oldIrql);
KeAcquireSpinLockAtDpcLevel(&Process->HandleTable.ListLock);
parent_current = ParentHandleTable->ListHead.Flink;
while (parent_current != &ParentHandleTable->ListHead)
{
HANDLE_BLOCK* current_block = CONTAINING_RECORD(parent_current,
HANDLE_BLOCK,
entry);
HANDLE NewHandle;
current_block = CONTAINING_RECORD(parent_current,
HANDLE_BLOCK,
entry);
new_block = ExAllocatePoolWithTag(NonPagedPool,
sizeof(HANDLE_BLOCK),
TAG_HANDLE_TABLE);
if (new_block == NULL)
{
break;
}
RtlZeroMemory(new_block, sizeof(HANDLE_BLOCK));
for (i=0; i<HANDLE_BLOCK_ENTRIES; i++)
{
if (Inherit || current_block->handles[i].Inherit)
{
ObCreateHandle(Process,
current_block->handles[i].ObjectBody,
current_block->handles[i].GrantedAccess,
current_block->handles[i].Inherit,
&NewHandle);
}
else
{
ObCreateHandle(Process,
NULL,
0,
current_block->handles[i].Inherit,
&NewHandle);
}
}
{
if (current_block->handles[i].ObjectBody)
{
if (current_block->handles[i].Inherit && Inherit)
{
new_block->handles[i].ObjectBody = current_block->handles[i].ObjectBody;
new_block->handles[i].GrantedAccess = current_block->handles[i].GrantedAccess;
new_block->handles[i].Inherit = TRUE;
InterlockedIncrement(&(BODY_TO_HEADER(current_block->handles[i].ObjectBody)->HandleCount));
}
}
}
InsertTailList(&(Process->HandleTable.ListHead), &new_block->entry);
parent_current = parent_current->Flink;
}
KeReleaseSpinLockFromDpcLevel(&Process->HandleTable.ListLock);
KeReleaseSpinLock(&Parent->HandleTable.ListLock, oldIrql);
}
}
@ -400,7 +412,7 @@ PVOID ObDeleteHandle(PEPROCESS Process, HANDLE Handle)
if (ObjectBody != NULL)
{
Header = BODY_TO_HEADER(ObjectBody);
BODY_TO_HEADER(ObjectBody)->HandleCount--;
InterlockedDecrement(&(BODY_TO_HEADER(ObjectBody)->HandleCount));
ObReferenceObjectByPointer(ObjectBody,
0,
NULL,
@ -451,7 +463,7 @@ NTSTATUS ObCreateHandle(PEPROCESS Process,
if (ObjectBody != NULL)
{
BODY_TO_HEADER(ObjectBody)->HandleCount++;
InterlockedIncrement(&(BODY_TO_HEADER(ObjectBody)->HandleCount));
}
HandleTable = &Process->HandleTable;
KeAcquireSpinLock(&HandleTable->ListLock, &oldlvl);
@ -498,10 +510,10 @@ NTSTATUS ObCreateHandle(PEPROCESS Process,
RtlZeroMemory(new_blk,sizeof(HANDLE_BLOCK));
InsertTailList(&(Process->HandleTable.ListHead),
&new_blk->entry);
KeReleaseSpinLock(&HandleTable->ListLock, oldlvl);
new_blk->handles[0].ObjectBody = ObjectBody;
new_blk->handles[0].GrantedAccess = GrantedAccess;
new_blk->handles[0].Inherit = Inherit;
KeReleaseSpinLock(&HandleTable->ListLock, oldlvl);
*HandleReturn = (HANDLE)(handle << 2);
return(STATUS_SUCCESS);
}