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Don't crash when ObjectAttributes is NULL.

This commit is contained in:
Alexandre Julliard 2000-01-26 01:39:51 +00:00
parent eafa391081
commit fee65e4672
1 changed files with 71 additions and 102 deletions
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105
dlls/ntdll/sync.c
View File

@ -17,12 +17,12 @@
DEFAULT_DEBUG_CHANNEL(ntdll);
/* copy a key name into the request buffer */
static inline NTSTATUS copy_nameU( LPWSTR Dest, PUNICODE_STRING Name )
static inline NTSTATUS copy_nameU( LPWSTR Dest, const OBJECT_ATTRIBUTES *attr )
{
if (Name->Buffer)
if (attr && attr->ObjectName && attr->ObjectName->Buffer)
{
if ((Name->Length) > MAX_PATH) return STATUS_BUFFER_OVERFLOW;
lstrcpyW( Dest, Name->Buffer );
if ((attr->ObjectName->Length) > MAX_PATH) return STATUS_BUFFER_OVERFLOW;
lstrcpyW( Dest, attr->ObjectName->Buffer );
}
else Dest[0] = 0;
return STATUS_SUCCESS;
@ -43,11 +43,7 @@ NTSTATUS WINAPI NtCreateSemaphore(
IN ULONG MaximumCount)
{
struct create_semaphore_request *req = get_req_buffer();
HRESULT ret;
FIXME("(%p,0x%08lx,%p,0x%08lx,0x%08lx) stub!\n",
SemaphoreHandle, DesiredAccess, ObjectAttributes, InitialCount, MaximumCount);
dump_ObjectAttributes(ObjectAttributes);
NTSTATUS ret;
if ((MaximumCount <= 0) || (InitialCount < 0) || (InitialCount > MaximumCount))
return STATUS_INVALID_PARAMETER;
@ -55,35 +51,29 @@ NTSTATUS WINAPI NtCreateSemaphore(
*SemaphoreHandle = 0;
req->initial = InitialCount;
req->max = MaximumCount;
req->inherit = ObjectAttributes->Attributes & OBJ_INHERIT;
copy_nameU( req->name, ObjectAttributes->ObjectName );
if (!(ret = server_call_noerr( REQ_CREATE_SEMAPHORE )))
*SemaphoreHandle = req->handle;
req->inherit = ObjectAttributes && (ObjectAttributes->Attributes & OBJ_INHERIT);
if (!(ret = copy_nameU( req->name, ObjectAttributes )) &&
!(ret = server_call_noerr( REQ_CREATE_SEMAPHORE ))) *SemaphoreHandle = req->handle;
return ret;
}
/******************************************************************************
* NtOpenSemaphore
*
* FIXME
*/
NTSTATUS WINAPI NtOpenSemaphore(
IN HANDLE SemaphoreHandle,
OUT PHANDLE SemaphoreHandle,
IN ACCESS_MASK DesiredAcces,
IN POBJECT_ATTRIBUTES ObjectAttributes)
{
struct open_semaphore_request *req = get_req_buffer();
HRESULT ret;
FIXME("(0x%08x,0x%08lx,%p) stub!\n",
SemaphoreHandle, DesiredAcces, ObjectAttributes);
dump_ObjectAttributes(ObjectAttributes);
NTSTATUS ret;
*SemaphoreHandle = 0;
req->access = DesiredAcces;
req->inherit = ObjectAttributes->Attributes & OBJ_INHERIT;
copy_nameU( req->name, ObjectAttributes->ObjectName );
if ((ret = server_call_noerr( REQ_OPEN_SEMAPHORE )) != STATUS_SUCCESS) return -1;
return req->handle;
req->inherit = ObjectAttributes && (ObjectAttributes->Attributes & OBJ_INHERIT);
if (!(ret = copy_nameU( req->name, ObjectAttributes )) &&
!(ret = server_call_noerr( REQ_OPEN_SEMAPHORE ))) *SemaphoreHandle = req->handle;
return ret;
}
/******************************************************************************
@ -109,10 +99,7 @@ NTSTATUS WINAPI NtReleaseSemaphore(
IN PULONG PreviousCount)
{
struct release_semaphore_request *req = get_req_buffer();
HRESULT ret;
FIXME("(0x%08x,0x%08lx,%p,) stub!\n",
SemaphoreHandle, ReleaseCount, PreviousCount);
NTSTATUS ret;
if (ReleaseCount < 0) return STATUS_INVALID_PARAMETER;
@ -140,18 +127,14 @@ NTSTATUS WINAPI NtCreateEvent(
IN BOOLEAN InitialState)
{
struct create_event_request *req = get_req_buffer();
HRESULT ret;
FIXME("(%p,0x%08lx,%p,%08x,%08x): empty stub\n",
EventHandle,DesiredAccess,ObjectAttributes,ManualReset,InitialState);
dump_ObjectAttributes(ObjectAttributes);
NTSTATUS ret;
*EventHandle = 0;
req->manual_reset = ManualReset;
req->initial_state = InitialState;
req->inherit = ObjectAttributes->Attributes & OBJ_INHERIT;
copy_nameU( req->name, ObjectAttributes->ObjectName );
if (!(ret = server_call_noerr( REQ_CREATE_EVENT ))) *EventHandle = req->handle;
req->inherit = ObjectAttributes && (ObjectAttributes->Attributes & OBJ_INHERIT);
if (!(ret = copy_nameU( req->name, ObjectAttributes )) &&
!(ret = server_call_noerr( REQ_CREATE_EVENT ))) *EventHandle = req->handle;
return ret;
}
@ -164,35 +147,16 @@ NTSTATUS WINAPI NtOpenEvent(
IN POBJECT_ATTRIBUTES ObjectAttributes)
{
struct open_event_request *req = get_req_buffer();
HRESULT ret;
FIXME("(%p,0x%08lx,%p),stub!\n",
EventHandle,DesiredAccess,ObjectAttributes);
dump_ObjectAttributes(ObjectAttributes);
NTSTATUS ret;
*EventHandle = 0;
req->access = DesiredAccess;
req->inherit = ObjectAttributes->Attributes & OBJ_INHERIT;
copy_nameU( req->name, ObjectAttributes->ObjectName );
if (!(ret = server_call_noerr( REQ_OPEN_EVENT ))) *EventHandle = req->handle;
req->inherit = ObjectAttributes && (ObjectAttributes->Attributes & OBJ_INHERIT);
if (!(ret = copy_nameU( req->name, ObjectAttributes )) &&
!(ret = server_call_noerr( REQ_OPEN_EVENT ))) *EventHandle = req->handle;
return ret;
}
/***********************************************************************
* EVENT_Operation
*
* Execute an event operation (set,reset,pulse).
*/
static NTSTATUS EVENT_Operation(
HANDLE handle,
PULONG NumberOfThreadsReleased,
enum event_op op )
{
struct event_op_request *req = get_req_buffer();
req->handle = handle;
req->op = op;
return server_call_noerr( REQ_EVENT_OP );
}
/******************************************************************************
* NtSetEvent
@ -201,9 +165,11 @@ NTSTATUS WINAPI NtSetEvent(
IN HANDLE EventHandle,
PULONG NumberOfThreadsReleased)
{
struct event_op_request *req = get_req_buffer();
FIXME("(0x%08x,%p)\n", EventHandle, NumberOfThreadsReleased);
return EVENT_Operation(EventHandle, NumberOfThreadsReleased, SET_EVENT);
req->handle = EventHandle;
req->op = SET_EVENT;
return server_call_noerr( REQ_EVENT_OP );
}
/******************************************************************************
@ -213,9 +179,11 @@ NTSTATUS WINAPI NtResetEvent(
IN HANDLE EventHandle,
PULONG NumberOfThreadsReleased)
{
struct event_op_request *req = get_req_buffer();
FIXME("(0x%08x,%p)\n", EventHandle, NumberOfThreadsReleased);
return EVENT_Operation(EventHandle, NumberOfThreadsReleased, RESET_EVENT);
req->handle = EventHandle;
req->op = RESET_EVENT;
return server_call_noerr( REQ_EVENT_OP );
}
/******************************************************************************
@ -227,8 +195,7 @@ NTSTATUS WINAPI NtResetEvent(
NTSTATUS WINAPI NtClearEvent (
IN HANDLE EventHandle)
{
FIXME("(0x%08x)\n", EventHandle);
return EVENT_Operation(EventHandle, NULL, RESET_EVENT);
return NtResetEvent( EventHandle, NULL );
}
/******************************************************************************
@ -241,9 +208,11 @@ NTSTATUS WINAPI NtPulseEvent(
IN HANDLE EventHandle,
IN PULONG PulseCount)
{
struct event_op_request *req = get_req_buffer();
FIXME("(0x%08x,%p)\n", EventHandle, PulseCount);
return EVENT_Operation(EventHandle, NULL, PULSE_EVENT);
req->handle = EventHandle;
req->op = PULSE_EVENT;
return server_call_noerr( REQ_EVENT_OP );
}
/******************************************************************************