639 lines
17 KiB
C
639 lines
17 KiB
C
/*
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* Plug and Play support for hid devices found through udev
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*
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* Copyright 2016 CodeWeavers, Aric Stewart
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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#include "config.h"
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#include <errno.h>
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#include <fcntl.h>
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#include <stdarg.h>
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#include <stdlib.h>
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#ifdef HAVE_UNISTD_H
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# include <unistd.h>
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#endif
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#ifdef HAVE_POLL_H
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# include <poll.h>
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#endif
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#ifdef HAVE_SYS_POLL_H
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# include <sys/poll.h>
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#endif
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#ifdef HAVE_LIBUDEV_H
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# include <libudev.h>
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#endif
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#ifdef HAVE_LINUX_HIDRAW_H
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# include <linux/hidraw.h>
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#endif
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#ifdef HAVE_SYS_IOCTL_H
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# include <sys/ioctl.h>
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#endif
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#define NONAMELESSUNION
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#include "ntstatus.h"
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#define WIN32_NO_STATUS
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#include "windef.h"
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#include "winbase.h"
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#include "winnls.h"
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#include "winternl.h"
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#include "ddk/wdm.h"
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#include "ddk/hidtypes.h"
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#include "wine/debug.h"
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#include "wine/unicode.h"
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#include "bus.h"
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WINE_DEFAULT_DEBUG_CHANNEL(plugplay);
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#ifdef HAVE_UDEV
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WINE_DECLARE_DEBUG_CHANNEL(hid_report);
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static struct udev *udev_context = NULL;
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static DRIVER_OBJECT *udev_driver_obj = NULL;
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static const WCHAR hidraw_busidW[] = {'H','I','D','R','A','W',0};
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#include "initguid.h"
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DEFINE_GUID(GUID_DEVCLASS_HIDRAW, 0x3def44ad,0x242e,0x46e5,0x82,0x6d,0x70,0x72,0x13,0xf3,0xaa,0x81);
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struct platform_private
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{
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struct udev_device *udev_device;
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int device_fd;
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HANDLE report_thread;
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int control_pipe[2];
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};
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static inline struct platform_private *impl_from_DEVICE_OBJECT(DEVICE_OBJECT *device)
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{
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return (struct platform_private *)get_platform_private(device);
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}
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static inline WCHAR *strdupAtoW(const char *src)
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{
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WCHAR *dst;
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DWORD len;
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if (!src) return NULL;
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len = MultiByteToWideChar(CP_UNIXCP, 0, src, -1, NULL, 0);
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if ((dst = HeapAlloc(GetProcessHeap(), 0, len * sizeof(WCHAR))))
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MultiByteToWideChar(CP_UNIXCP, 0, src, -1, dst, len);
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return dst;
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}
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static DWORD get_sysattr_dword(struct udev_device *dev, const char *sysattr, int base)
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{
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const char *attr = udev_device_get_sysattr_value(dev, sysattr);
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if (!attr)
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{
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WARN("Could not get %s from device\n", sysattr);
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return 0;
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}
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return strtol(attr, NULL, base);
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}
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static WCHAR *get_sysattr_string(struct udev_device *dev, const char *sysattr)
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{
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const char *attr = udev_device_get_sysattr_value(dev, sysattr);
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if (!attr)
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{
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WARN("Could not get %s from device\n", sysattr);
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return NULL;
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}
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return strdupAtoW(attr);
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}
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static int compare_platform_device(DEVICE_OBJECT *device, void *platform_dev)
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{
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struct udev_device *dev1 = impl_from_DEVICE_OBJECT(device)->udev_device;
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struct udev_device *dev2 = platform_dev;
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return strcmp(udev_device_get_syspath(dev1), udev_device_get_syspath(dev2));
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}
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static NTSTATUS hidraw_get_reportdescriptor(DEVICE_OBJECT *device, BYTE *buffer, DWORD length, DWORD *out_length)
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{
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#ifdef HAVE_LINUX_HIDRAW_H
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struct hidraw_report_descriptor descriptor;
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struct platform_private *private = impl_from_DEVICE_OBJECT(device);
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if (ioctl(private->device_fd, HIDIOCGRDESCSIZE, &descriptor.size) == -1)
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{
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WARN("ioctl(HIDIOCGRDESCSIZE) failed: %d %s\n", errno, strerror(errno));
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return STATUS_UNSUCCESSFUL;
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}
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*out_length = descriptor.size;
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if (length < descriptor.size)
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return STATUS_BUFFER_TOO_SMALL;
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if (!descriptor.size)
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return STATUS_SUCCESS;
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if (ioctl(private->device_fd, HIDIOCGRDESC, &descriptor) == -1)
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{
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WARN("ioctl(HIDIOCGRDESC) failed: %d %s\n", errno, strerror(errno));
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return STATUS_UNSUCCESSFUL;
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}
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memcpy(buffer, descriptor.value, descriptor.size);
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return STATUS_SUCCESS;
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#else
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return STATUS_NOT_IMPLEMENTED;
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#endif
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}
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static NTSTATUS hidraw_get_string(DEVICE_OBJECT *device, DWORD index, WCHAR *buffer, DWORD length)
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{
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struct udev_device *usbdev;
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struct platform_private *private = impl_from_DEVICE_OBJECT(device);
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WCHAR *str = NULL;
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usbdev = udev_device_get_parent_with_subsystem_devtype(private->udev_device, "usb", "usb_device");
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if (usbdev)
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{
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switch (index)
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{
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case HID_STRING_ID_IPRODUCT:
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str = get_sysattr_string(usbdev, "product");
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break;
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case HID_STRING_ID_IMANUFACTURER:
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str = get_sysattr_string(usbdev, "manufacturer");
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break;
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case HID_STRING_ID_ISERIALNUMBER:
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str = get_sysattr_string(usbdev, "serial");
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break;
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default:
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ERR("Unhandled string index %08x\n", index);
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return STATUS_NOT_IMPLEMENTED;
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}
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}
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else
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{
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#ifdef HAVE_LINUX_HIDRAW_H
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switch (index)
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{
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case HID_STRING_ID_IPRODUCT:
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{
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char buf[MAX_PATH];
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if (ioctl(private->device_fd, HIDIOCGRAWNAME(MAX_PATH), buf) == -1)
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WARN("ioctl(HIDIOCGRAWNAME) failed: %d %s\n", errno, strerror(errno));
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else
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str = strdupAtoW(buf);
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break;
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}
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case HID_STRING_ID_IMANUFACTURER:
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break;
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case HID_STRING_ID_ISERIALNUMBER:
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break;
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default:
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ERR("Unhandled string index %08x\n", index);
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return STATUS_NOT_IMPLEMENTED;
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}
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#else
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return STATUS_NOT_IMPLEMENTED;
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#endif
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}
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if (!str)
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{
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if (!length) return STATUS_BUFFER_TOO_SMALL;
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buffer[0] = 0;
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return STATUS_SUCCESS;
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}
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if (length <= strlenW(str))
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{
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HeapFree(GetProcessHeap(), 0, str);
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return STATUS_BUFFER_TOO_SMALL;
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}
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strcpyW(buffer, str);
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HeapFree(GetProcessHeap(), 0, str);
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return STATUS_SUCCESS;
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}
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static DWORD CALLBACK device_report_thread(void *args)
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{
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DEVICE_OBJECT *device = (DEVICE_OBJECT*)args;
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struct platform_private *private = impl_from_DEVICE_OBJECT(device);
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struct pollfd plfds[2];
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plfds[0].fd = private->device_fd;
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plfds[0].events = POLLIN;
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plfds[0].revents = 0;
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plfds[1].fd = private->control_pipe[0];
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plfds[1].events = POLLIN;
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plfds[1].revents = 0;
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while (1)
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{
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int size;
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BYTE report_buffer[1024];
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if (poll(plfds, 2, -1) <= 0) continue;
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if (plfds[1].revents)
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break;
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size = read(plfds[0].fd, report_buffer, sizeof(report_buffer));
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if (size == -1)
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TRACE_(hid_report)("Read failed. Likely an unplugged device\n");
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else if (size == 0)
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TRACE_(hid_report)("Failed to read report\n");
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else
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process_hid_report(device, report_buffer, size);
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}
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return 0;
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}
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static NTSTATUS begin_report_processing(DEVICE_OBJECT *device)
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{
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struct platform_private *private = impl_from_DEVICE_OBJECT(device);
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if (private->report_thread)
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return STATUS_SUCCESS;
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if (pipe(private->control_pipe) != 0)
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{
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ERR("Control pipe creation failed\n");
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return STATUS_UNSUCCESSFUL;
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}
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private->report_thread = CreateThread(NULL, 0, device_report_thread, device, 0, NULL);
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if (!private->report_thread)
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{
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ERR("Unable to create device report thread\n");
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close(private->control_pipe[0]);
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close(private->control_pipe[1]);
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return STATUS_UNSUCCESSFUL;
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}
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else
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return STATUS_SUCCESS;
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}
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static NTSTATUS hidraw_set_output_report(DEVICE_OBJECT *device, UCHAR id, BYTE *report, DWORD length, ULONG_PTR *written)
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{
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struct platform_private* ext = impl_from_DEVICE_OBJECT(device);
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ssize_t rc;
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if (id != 0)
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rc = write(ext->device_fd, report, length);
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else
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{
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BYTE report_buffer[1024];
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if (length + 1 > sizeof(report_buffer))
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{
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ERR("Output report buffer too small\n");
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return STATUS_UNSUCCESSFUL;
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}
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report_buffer[0] = 0;
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memcpy(&report_buffer[1], report, length);
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rc = write(ext->device_fd, report_buffer, length + 1);
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}
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if (rc > 0)
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{
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*written = rc;
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return STATUS_SUCCESS;
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}
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else
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{
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*written = 0;
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return STATUS_UNSUCCESSFUL;
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}
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}
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static NTSTATUS hidraw_get_feature_report(DEVICE_OBJECT *device, UCHAR id, BYTE *report, DWORD length, ULONG_PTR *read)
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{
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#if defined(HAVE_LINUX_HIDRAW_H) && defined(HIDIOCGFEATURE)
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int rc;
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struct platform_private* ext = impl_from_DEVICE_OBJECT(device);
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report[0] = id;
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length = min(length, 0x1fff);
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rc = ioctl(ext->device_fd, HIDIOCGFEATURE(length), report);
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if (rc >= 0)
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{
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*read = rc;
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return STATUS_SUCCESS;
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}
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else
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{
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*read = 0;
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return STATUS_UNSUCCESSFUL;
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}
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#else
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*read = 0;
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return STATUS_NOT_IMPLEMENTED;
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#endif
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}
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static NTSTATUS hidraw_set_feature_report(DEVICE_OBJECT *device, UCHAR id, BYTE *report, DWORD length, ULONG_PTR *written)
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{
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#if defined(HAVE_LINUX_HIDRAW_H) && defined(HIDIOCSFEATURE)
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int rc;
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struct platform_private* ext = impl_from_DEVICE_OBJECT(device);
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BYTE *feature_buffer;
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BYTE buffer[1024];
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if (id == 0)
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{
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if (length + 1 > sizeof(buffer))
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{
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ERR("Output feature buffer too small\n");
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return STATUS_UNSUCCESSFUL;
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}
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buffer[0] = 0;
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memcpy(&buffer[1], report, length);
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feature_buffer = buffer;
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length = length + 1;
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}
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else
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feature_buffer = report;
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length = min(length, 0x1fff);
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rc = ioctl(ext->device_fd, HIDIOCSFEATURE(length), feature_buffer);
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if (rc >= 0)
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{
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*written = rc;
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return STATUS_SUCCESS;
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}
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else
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{
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*written = 0;
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return STATUS_UNSUCCESSFUL;
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}
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#else
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*written = 0;
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return STATUS_NOT_IMPLEMENTED;
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#endif
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}
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static const platform_vtbl hidraw_vtbl =
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{
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compare_platform_device,
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hidraw_get_reportdescriptor,
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hidraw_get_string,
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begin_report_processing,
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hidraw_set_output_report,
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hidraw_get_feature_report,
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hidraw_set_feature_report,
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};
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static void try_add_device(struct udev_device *dev)
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{
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DWORD vid = 0, pid = 0, version = 0;
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struct udev_device *usbdev;
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DEVICE_OBJECT *device = NULL;
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const char *subsystem;
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const char *devnode;
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WCHAR *serial = NULL;
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int fd;
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if (!(devnode = udev_device_get_devnode(dev)))
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return;
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if ((fd = open(devnode, O_RDWR)) == -1)
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{
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WARN("Unable to open udev device %s: %s\n", debugstr_a(devnode), strerror(errno));
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return;
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}
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usbdev = udev_device_get_parent_with_subsystem_devtype(dev, "usb", "usb_device");
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if (usbdev)
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{
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vid = get_sysattr_dword(usbdev, "idVendor", 16);
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pid = get_sysattr_dword(usbdev, "idProduct", 16);
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version = get_sysattr_dword(usbdev, "version", 10);
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serial = get_sysattr_string(usbdev, "serial");
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}
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TRACE("Found udev device %s (vid %04x, pid %04x, version %u, serial %s)\n",
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debugstr_a(devnode), vid, pid, version, debugstr_w(serial));
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subsystem = udev_device_get_subsystem(dev);
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if (strcmp(subsystem, "hidraw") == 0)
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{
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device = bus_create_hid_device(udev_driver_obj, hidraw_busidW, vid, pid, version, 0, serial, FALSE,
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&GUID_DEVCLASS_HIDRAW, &hidraw_vtbl, sizeof(struct platform_private));
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}
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if (device)
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{
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struct platform_private *private = impl_from_DEVICE_OBJECT(device);
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private->udev_device = udev_device_ref(dev);
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private->device_fd = fd;
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IoInvalidateDeviceRelations(device, BusRelations);
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}
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else
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{
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WARN("Ignoring device %s with subsystem %s\n", debugstr_a(devnode), subsystem);
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close(fd);
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}
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HeapFree(GetProcessHeap(), 0, serial);
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}
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static void try_remove_device(struct udev_device *dev)
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{
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DEVICE_OBJECT *device = bus_find_hid_device(&hidraw_vtbl, dev);
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struct platform_private *private;
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if (!device) return;
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IoInvalidateDeviceRelations(device, RemovalRelations);
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private = impl_from_DEVICE_OBJECT(device);
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if (private->report_thread)
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{
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write(private->control_pipe[1], "q", 1);
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WaitForSingleObject(private->report_thread, INFINITE);
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close(private->control_pipe[0]);
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close(private->control_pipe[1]);
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CloseHandle(private->report_thread);
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}
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dev = private->udev_device;
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close(private->device_fd);
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bus_remove_hid_device(device);
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udev_device_unref(dev);
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}
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static void build_initial_deviceset(void)
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{
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struct udev_enumerate *enumerate;
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struct udev_list_entry *devices, *dev_list_entry;
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enumerate = udev_enumerate_new(udev_context);
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if (!enumerate)
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{
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WARN("Unable to create udev enumeration object\n");
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return;
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}
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if (udev_enumerate_add_match_subsystem(enumerate, "hidraw") < 0)
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WARN("Failed to add subsystem 'hidraw' to enumeration\n");
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if (udev_enumerate_scan_devices(enumerate) < 0)
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WARN("Enumeration scan failed\n");
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devices = udev_enumerate_get_list_entry(enumerate);
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udev_list_entry_foreach(dev_list_entry, devices)
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{
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struct udev_device *dev;
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const char *path;
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path = udev_list_entry_get_name(dev_list_entry);
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if ((dev = udev_device_new_from_syspath(udev_context, path)))
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{
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try_add_device(dev);
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udev_device_unref(dev);
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}
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}
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udev_enumerate_unref(enumerate);
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}
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static struct udev_monitor *create_monitor(struct pollfd *pfd)
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{
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struct udev_monitor *monitor;
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monitor = udev_monitor_new_from_netlink(udev_context, "udev");
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if (!monitor)
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{
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WARN("Unable to get udev monitor object\n");
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return NULL;
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}
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if (udev_monitor_filter_add_match_subsystem_devtype(monitor, "hidraw", NULL) < 0)
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WARN("Failed to add subsystem 'hidraw' to monitor\n");
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if (udev_monitor_enable_receiving(monitor) < 0)
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goto error;
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if ((pfd->fd = udev_monitor_get_fd(monitor)) >= 0)
|
|
{
|
|
pfd->events = POLLIN;
|
|
return monitor;
|
|
}
|
|
|
|
error:
|
|
WARN("Failed to start monitoring\n");
|
|
udev_monitor_unref(monitor);
|
|
return NULL;
|
|
}
|
|
|
|
static void process_monitor_event(struct udev_monitor *monitor)
|
|
{
|
|
struct udev_device *dev;
|
|
const char *action;
|
|
|
|
dev = udev_monitor_receive_device(monitor);
|
|
if (!dev)
|
|
{
|
|
FIXME("Failed to get device that has changed\n");
|
|
return;
|
|
}
|
|
|
|
action = udev_device_get_action(dev);
|
|
TRACE("Received action %s for udev device %s\n", debugstr_a(action),
|
|
debugstr_a(udev_device_get_devnode(dev)));
|
|
|
|
if (!action)
|
|
WARN("No action received\n");
|
|
else if (strcmp(action, "add") == 0)
|
|
try_add_device(dev);
|
|
else if (strcmp(action, "remove") == 0)
|
|
try_remove_device(dev);
|
|
else
|
|
WARN("Unhandled action %s\n", debugstr_a(action));
|
|
|
|
udev_device_unref(dev);
|
|
}
|
|
|
|
static DWORD CALLBACK deviceloop_thread(void *args)
|
|
{
|
|
struct udev_monitor *monitor;
|
|
HANDLE init_done = args;
|
|
struct pollfd pfd;
|
|
|
|
monitor = create_monitor(&pfd);
|
|
build_initial_deviceset();
|
|
SetEvent(init_done);
|
|
|
|
while (monitor)
|
|
{
|
|
if (poll(&pfd, 1, -1) <= 0) continue;
|
|
process_monitor_event(monitor);
|
|
}
|
|
|
|
TRACE("Monitor thread exiting\n");
|
|
if (monitor)
|
|
udev_monitor_unref(monitor);
|
|
return 0;
|
|
}
|
|
|
|
NTSTATUS WINAPI udev_driver_init(DRIVER_OBJECT *driver, UNICODE_STRING *registry_path)
|
|
{
|
|
HANDLE events[2];
|
|
DWORD result;
|
|
|
|
TRACE("(%p, %s)\n", driver, debugstr_w(registry_path->Buffer));
|
|
|
|
if (!(udev_context = udev_new()))
|
|
{
|
|
ERR("Can't create udev object\n");
|
|
return STATUS_UNSUCCESSFUL;
|
|
}
|
|
|
|
udev_driver_obj = driver;
|
|
driver->MajorFunction[IRP_MJ_PNP] = common_pnp_dispatch;
|
|
driver->MajorFunction[IRP_MJ_INTERNAL_DEVICE_CONTROL] = hid_internal_dispatch;
|
|
|
|
if (!(events[0] = CreateEventW(NULL, TRUE, FALSE, NULL)))
|
|
goto error;
|
|
if (!(events[1] = CreateThread(NULL, 0, deviceloop_thread, events[0], 0, NULL)))
|
|
{
|
|
CloseHandle(events[0]);
|
|
goto error;
|
|
}
|
|
|
|
result = WaitForMultipleObjects(2, events, FALSE, INFINITE);
|
|
CloseHandle(events[0]);
|
|
CloseHandle(events[1]);
|
|
if (result == WAIT_OBJECT_0)
|
|
{
|
|
TRACE("Initialization successful\n");
|
|
return STATUS_SUCCESS;
|
|
}
|
|
|
|
error:
|
|
ERR("Failed to initialize udev device thread\n");
|
|
udev_unref(udev_context);
|
|
udev_context = NULL;
|
|
udev_driver_obj = NULL;
|
|
return STATUS_UNSUCCESSFUL;
|
|
}
|
|
|
|
#else
|
|
|
|
NTSTATUS WINAPI udev_driver_init(DRIVER_OBJECT *driver, UNICODE_STRING *registry_path)
|
|
{
|
|
WARN("Wine was compiled without UDEV support\n");
|
|
return STATUS_NOT_IMPLEMENTED;
|
|
}
|
|
|
|
#endif /* HAVE_UDEV */
|