dlls/hidclass.sys/main.c

   1 /*
   2  * WINE Hid device services
   3  *
   4  * Copyright 2015 Aric Stewart
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  */
  20
  21 #define NONAMELESSUNION
  22 #include <unistd.h>
  23 #include <stdarg.h>
  24 #include "hid.h"
  25 #include "wine/debug.h"
  26 #include "wine/unicode.h"
  27 #include "wine/list.h"
  28
  29 WINE_DEFAULT_DEBUG_CHANNEL(hid);
  30
  31 static struct list minidriver_list = LIST_INIT(minidriver_list);
  32
  33 static minidriver* find_minidriver(DRIVER_OBJECT *driver)
  34 {
  35     minidriver *md;
  36     LIST_FOR_EACH_ENTRY(md, &minidriver_list, minidriver, entry)
  37     {
  38         if (md->minidriver.DriverObject == driver)
  39             return md;
  40     }
  41     return NULL;
  42 }
  43
  44 static VOID WINAPI UnloadDriver(DRIVER_OBJECT *driver)
  45 {
  46     minidriver *md;
  47
  48     TRACE("Driver Unload\n");
  49     md = find_minidriver(driver);
  50     if (md)
  51     {
  52         if (md->DriverUnload)
  53             md->DriverUnload(md->minidriver.DriverObject);
  54         list_remove(&md->entry);
  55         HeapFree( GetProcessHeap(), 0, md );
  56     }
  57 }
  58
  59 NTSTATUS WINAPI HidRegisterMinidriver(HID_MINIDRIVER_REGISTRATION *registration)
  60 {
  61     minidriver *driver;
  62     driver = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(*driver));
  63
  64     if (!driver)
  65         return STATUS_NO_MEMORY;
  66
  67     driver->DriverUnload = registration->DriverObject->DriverUnload;
  68     registration->DriverObject->DriverUnload = UnloadDriver;
  69
  70     driver->minidriver = *registration;
  71     list_add_tail(&minidriver_list, &driver->entry);
  72
  73     return STATUS_SUCCESS;
  74 }