wineusb.sys: Move the libusb_cancel_transfer() call to a new Unix library.

dlls/wineusb.sys/Makefile.in

 EXTRADEFS = -DWINE_NO_LONG_TYPES
 MODULE    = wineusb.sys
+UNIXLIB   = wineusb.so
 IMPORTS   = ntoskrnl
 UNIX_LIBS    = $(USB_LIBS)
 UNIX_CFLAGS  = $(USB_CFLAGS)
@@ -7,6 +8,7 @@ UNIX_CFLAGS  = $(USB_CFLAGS)
 EXTRADLLFLAGS = -Wl,--subsystem,native -mcygwin
 
 C_SRCS = \
+	unixlib.c \
 	wineusb.c
 
 RC_SRCS = wineusb.rc

dlls/wineusb.sys/unixlib.c

+/*
+ * libusb backend
+ *
+ * Copyright 2020 Zebediah Figura
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
+ */
+
+#if 0
+#pragma makedep unix
+#endif
+
+#include <libusb.h>
+#include "ntstatus.h"
+#define WIN32_NO_STATUS
+#include "wine/debug.h"
+#include "wine/list.h"
+
+#include "unixlib.h"
+
+WINE_DEFAULT_DEBUG_CHANNEL(wineusb);
+
+static NTSTATUS usb_cancel_transfer(void *args)
+{
+    const struct usb_cancel_transfer_params *params = args;
+    int ret;
+
+    if ((ret = libusb_cancel_transfer(params->transfer)) < 0)
+        ERR("Failed to cancel transfer: %s\n", libusb_strerror(ret));
+
+    return STATUS_SUCCESS;
+}
+
+const unixlib_entry_t __wine_unix_call_funcs[] =
+{
+#define X(name) [unix_ ## name] = name
+    X(usb_cancel_transfer),
+};

dlls/wineusb.sys/unixlib.h

+/*
+ * wineusb Unix library interface
+ *
+ * Copyright 2022 Zebediah Figura for CodeWeavers
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
+ */
+
+#ifndef __WINE_WINEUSB_UNIXLIB_H
+#define __WINE_WINEUSB_UNIXLIB_H
+
+#include "windef.h"
+#include "winternl.h"
+#include "wine/unixlib.h"
+
+struct usb_cancel_transfer_params
+{
+    void *transfer;
+};
+
+enum unix_funcs
+{
+    unix_usb_cancel_transfer,
+};
+
+#endif

dlls/wineusb.sys/wineusb.c

@@ -36,6 +36,8 @@
 #include "wine/list.h"
 #include "wine/unicode.h"
 
+#include "unixlib.h"
+
 WINE_DEFAULT_DEBUG_CHANNEL(wineusb);
 
 #ifdef __ASM_USE_FASTCALL_WRAPPER
@@ -64,6 +66,8 @@ __ASM_STDCALL_FUNC( wrap_fastcall_func1, 8,
 
 DECLARE_CRITICAL_SECTION(wineusb_cs);
 
+static unixlib_handle_t unix_handle;
+
 static struct list device_list = LIST_INIT(device_list);
 
 struct usb_device
@@ -712,9 +716,12 @@ static NTSTATUS usb_submit_urb(struct usb_device *device, IRP *irp)
             for (entry = mark->Flink; entry != mark; entry = entry->Flink)
             {
                 IRP *queued_irp = CONTAINING_RECORD(entry, IRP, Tail.Overlay.ListEntry);
+                struct usb_cancel_transfer_params params =
+                {
+                    .transfer = queued_irp->Tail.Overlay.DriverContext[0],
+                };
 
-                if ((ret = libusb_cancel_transfer(queued_irp->Tail.Overlay.DriverContext[0])) < 0)
-                    ERR("Failed to cancel transfer: %s\n", libusb_strerror(ret));
+                __wine_unix_call(unix_handle, unix_usb_cancel_transfer, &params);
             }
             LeaveCriticalSection(&wineusb_cs);
 
@@ -930,10 +937,20 @@ static void WINAPI driver_unload(DRIVER_OBJECT *driver)
 
 NTSTATUS WINAPI DriverEntry(DRIVER_OBJECT *driver, UNICODE_STRING *path)
 {
+    NTSTATUS status;
+    void *instance;
     int err;
 
     TRACE("driver %p, path %s.\n", driver, debugstr_w(path->Buffer));
 
+    RtlPcToFileHeader(DriverEntry, &instance);
+    if ((status = NtQueryVirtualMemory(GetCurrentProcess(), instance,
+            MemoryWineUnixFuncs, &unix_handle, sizeof(unix_handle), NULL)))
+    {
+        ERR("Failed to initialize Unix library, status %#x.\n", status);
+        return status;
+    }
+
     driver_obj = driver;
 
     if ((err = libusb_init(NULL)))