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ntoskrnl.exe: Implement automatically generated device names. 

Signed-off-by: Zebediah Figura <z.figura12@gmail.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
stable
Zebediah Figura 2019-06-06 11:12:53 -04:00 committed by Alexandre Julliard
parent 9392aaa17f
commit 365f162fb1
1 changed files with 29 additions and 7 deletions
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36
dlls/ntoskrnl.exe/ntoskrnl.c
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@ -1466,9 +1466,12 @@ NTSTATUS WINAPI IoCreateDevice( DRIVER_OBJECT *driver, ULONG ext_size,
ULONG characteristics, BOOLEAN exclusive,
DEVICE_OBJECT **ret_device )
{
static const WCHAR auto_format[] = {'\\','D','e','v','i','c','e','\\','%','0','8','x',0};
NTSTATUS status;
DEVICE_OBJECT *device;
HANDLE manager = get_device_manager();
static unsigned int auto_idx = 0;
WCHAR autoW[17];
TRACE( "(%p, %u, %s, %u, %x, %u, %p)\n",
driver, ext_size, debugstr_us(name), type, characteristics, exclusive, ret_device );
@ -1481,15 +1484,34 @@ NTSTATUS WINAPI IoCreateDevice( DRIVER_OBJECT *driver, ULONG ext_size,
device->DeviceType = type;
device->StackSize = 1;
SERVER_START_REQ( create_device )
if (characteristics & FILE_AUTOGENERATED_DEVICE_NAME)
{
req->rootdir = 0;
req->manager = wine_server_obj_handle( manager );
req->user_ptr = wine_server_client_ptr( device );
if (name) wine_server_add_data( req, name->Buffer, name->Length );
status = wine_server_call( req );
do
{
sprintfW( autoW, auto_format, auto_idx++ );
SERVER_START_REQ( create_device )
{
req->rootdir = 0;
req->manager = wine_server_obj_handle( manager );
req->user_ptr = wine_server_client_ptr( device );
wine_server_add_data( req, autoW, strlenW(autoW) * sizeof(WCHAR) );
status = wine_server_call( req );
}
SERVER_END_REQ;
} while (status == STATUS_OBJECT_NAME_COLLISION);
}
else
{
SERVER_START_REQ( create_device )
{
req->rootdir = 0;
req->manager = wine_server_obj_handle( manager );
req->user_ptr = wine_server_client_ptr( device );
if (name) wine_server_add_data( req, name->Buffer, name->Length );
status = wine_server_call( req );
}
SERVER_END_REQ;
}
SERVER_END_REQ;
if (status)
{