Jacek Caban : ntoskrnl.exe: Reimplement PsGetCurrentProcessId and PsGetCurrentThreadId on top of KeGetCurrentThread.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: d9d55bb1d02f81d61f56bea511939508dd245275
URL:    https://source.winehq.org/git/wine.git/?a=commit;h=d9d55bb1d02f81d61f56bea51...

Author: Jacek Caban 
Date:   Mon Apr  8 14:04:29 2019 +0200

ntoskrnl.exe: Reimplement PsGetCurrentProcessId and PsGetCurrentThreadId on top of KeGetCurrentThread.

Signed-off-by: Jacek Caban 
Signed-off-by: Alexandre Julliard

---

dlls/ntoskrnl.exe/ntoskrnl.c         | 17 ++++++++---------
 dlls/ntoskrnl.exe/ntoskrnl_private.h |  1 +
 2 files changed, 9 insertions(+), 9 deletions(-)

diff --git a/dlls/ntoskrnl.exe/ntoskrnl.c b/dlls/ntoskrnl.exe/ntoskrnl.c
index 403c398..11c9f4a 100644
--- a/dlls/ntoskrnl.exe/ntoskrnl.c
+++ b/dlls/ntoskrnl.exe/ntoskrnl.c
@@ -93,9 +93,8 @@ static const WCHAR servicesW[] = {'\','R','e','g','i','s','t','r','y',
 /* tid of the thread running client request */
 static DWORD request_thread;

-/* pid/tid of the client thread */
+/* tid of the client thread */
 static DWORD client_tid;
-static DWORD client_pid;

struct wine_driver
 {
@@ -980,7 +979,6 @@ NTSTATUS CDECL wine_ntoskrnl_main_loop( HANDLE stop_event )
                 irp        = wine_server_ptr_handle( reply->next );
                 irp_params = reply->params;
                 client_tid = reply->client_tid;
-                client_pid = reply->client_pid;
                 in_size    = reply->in_size;
                 out_size   = reply->out_size;
             }
@@ -2482,12 +2480,17 @@ PEPROCESS WINAPI IoGetCurrentProcess(void)

static void *create_thread_object( HANDLE handle )
 {
+    THREAD_BASIC_INFORMATION info;
     struct _KTHREAD *thread;

if (!(thread = alloc_kernel_object( PsThreadType, handle, sizeof(*thread), 0 ))) return NULL;

thread->header.Type = 6;
     thread->header.WaitListHead.Blink = INVALID_HANDLE_VALUE; /* mark as kernel object */
+
+    if (!NtQueryInformationThread( handle, ThreadBasicInformation, &info, sizeof(info), NULL ))
+        thread->id = info.ClientId;
+
     return thread;
 }

@@ -2971,9 +2974,7 @@ NTSTATUS WINAPI PsCreateSystemThread(PHANDLE ThreadHandle, ULONG DesiredAccess,
  */
 HANDLE WINAPI PsGetCurrentProcessId(void)
 {
-    if (GetCurrentThreadId() == request_thread)
-        return UlongToHandle(client_pid);
-    return UlongToHandle(GetCurrentProcessId());
+    return KeGetCurrentThread()->id.UniqueProcess;
 }

@@ -2982,9 +2983,7 @@ HANDLE WINAPI PsGetCurrentProcessId(void)
  */
 HANDLE WINAPI PsGetCurrentThreadId(void)
 {
-    if (GetCurrentThreadId() == request_thread)
-        return UlongToHandle(client_tid);
-    return UlongToHandle(GetCurrentThreadId());
+    return KeGetCurrentThread()->id.UniqueThread;
 }

diff --git a/dlls/ntoskrnl.exe/ntoskrnl_private.h b/dlls/ntoskrnl.exe/ntoskrnl_private.h
index 4b58182..f5a7628 100644
--- a/dlls/ntoskrnl.exe/ntoskrnl_private.h
+++ b/dlls/ntoskrnl.exe/ntoskrnl_private.h
@@ -31,6 +31,7 @@ struct _OBJECT_TYPE
 struct _KTHREAD
 {
     DISPATCHER_HEADER header;
+    CLIENT_ID id;
 };

void *alloc_kernel_object( POBJECT_TYPE type, HANDLE handle, SIZE_T size, LONG ref ) DECLSPEC_HIDDEN;