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wine-wine/dlls/winebus.sys/bus_udev.c

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/*
* Plug and Play support for hid devices found through udev
*
* Copyright 2016 CodeWeavers, Aric Stewart
*
* 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
*/
#include "config.h"
#include <errno.h>
#include <fcntl.h>
#include <stdarg.h>
#include <stdlib.h>
#include <stdio.h>
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
#ifdef HAVE_POLL_H
# include <poll.h>
#endif
#ifdef HAVE_SYS_POLL_H
# include <sys/poll.h>
#endif
#ifdef HAVE_LIBUDEV_H
# include <libudev.h>
#endif
#ifdef HAVE_LINUX_HIDRAW_H
# include <linux/hidraw.h>
#endif
#ifdef HAVE_SYS_IOCTL_H
# include <sys/ioctl.h>
#endif
#ifdef HAVE_LINUX_INPUT_H
# include <linux/input.h>
# undef SW_MAX
# if defined(EVIOCGBIT) && defined(EV_ABS) && defined(BTN_PINKIE)
# define HAS_PROPER_INPUT_HEADER
# endif
# ifndef SYN_DROPPED
# define SYN_DROPPED 3
# endif
#endif
#define NONAMELESSUNION
#include "ntstatus.h"
#define WIN32_NO_STATUS
#include "windef.h"
#include "winbase.h"
#include "winnls.h"
#include "winternl.h"
#include "ddk/wdm.h"
#include "ddk/hidtypes.h"
#include "wine/debug.h"
#include "wine/heap.h"
#include "wine/unicode.h"
#ifdef HAS_PROPER_INPUT_HEADER
# include "hidusage.h"
#endif
#ifdef WORDS_BIGENDIAN
#define LE_WORD(x) RtlUshortByteSwap(x)
#define LE_DWORD(x) RtlUlongByteSwap(x)
#else
#define LE_WORD(x) (x)
#define LE_DWORD(x) (x)
#endif
#include "controller.h"
#include "bus.h"
WINE_DEFAULT_DEBUG_CHANNEL(plugplay);
#ifdef HAVE_UDEV
WINE_DECLARE_DEBUG_CHANNEL(hid_report);
static struct udev *udev_context = NULL;
static DWORD disable_hidraw = 0;
static DWORD disable_input = 0;
static HANDLE deviceloop_handle;
static int deviceloop_control[2];
static const WCHAR hidraw_busidW[] = {'H','I','D','R','A','W',0};
static const WCHAR lnxev_busidW[] = {'L','N','X','E','V',0};
struct platform_private
{
struct udev_device *udev_device;
int device_fd;
HANDLE report_thread;
int control_pipe[2];
};
static inline struct platform_private *impl_from_DEVICE_OBJECT(DEVICE_OBJECT *device)
{
return (struct platform_private *)get_platform_private(device);
}
#ifdef HAS_PROPER_INPUT_HEADER
static const BYTE REPORT_ABS_AXIS_TAIL[] = {
0x17, 0x00, 0x00, 0x00, 0x00, /* LOGICAL_MINIMUM (0) */
0x27, 0xff, 0x00, 0x00, 0x00, /* LOGICAL_MAXIMUM (0xff) */
0x37, 0x00, 0x00, 0x00, 0x00, /* PHYSICAL_MINIMUM (0) */
0x47, 0xff, 0x00, 0x00, 0x00, /* PHYSICAL_MAXIMUM (256) */
0x75, 0x20, /* REPORT_SIZE (32) */
0x95, 0x00, /* REPORT_COUNT (2) */
0x81, 0x02, /* INPUT (Data,Var,Abs) */
};
#define IDX_ABS_LOG_MINIMUM 1
#define IDX_ABS_LOG_MAXIMUM 6
#define IDX_ABS_PHY_MINIMUM 11
#define IDX_ABS_PHY_MAXIMUM 16
#define IDX_ABS_AXIS_COUNT 23
static const BYTE ABS_TO_HID_MAP[][2] = {
{HID_USAGE_PAGE_GENERIC, HID_USAGE_GENERIC_X}, /*ABS_X*/
{HID_USAGE_PAGE_GENERIC, HID_USAGE_GENERIC_Y}, /*ABS_Y*/
{HID_USAGE_PAGE_GENERIC, HID_USAGE_GENERIC_Z}, /*ABS_Z*/
{HID_USAGE_PAGE_GENERIC, HID_USAGE_GENERIC_RX}, /*ABS_RX*/
{HID_USAGE_PAGE_GENERIC, HID_USAGE_GENERIC_RY}, /*ABS_RY*/
{HID_USAGE_PAGE_GENERIC, HID_USAGE_GENERIC_RZ}, /*ABS_RZ*/
{HID_USAGE_PAGE_SIMULATION, HID_USAGE_SIMULATION_THROTTLE}, /*ABS_THROTTLE*/
{HID_USAGE_PAGE_SIMULATION, HID_USAGE_SIMULATION_RUDDER}, /*ABS_RUDDER*/
{HID_USAGE_PAGE_GENERIC, HID_USAGE_GENERIC_WHEEL}, /*ABS_WHEEL*/
{HID_USAGE_PAGE_SIMULATION, HID_USAGE_SIMULATION_ACCELERATOR}, /*ABS_GAS*/
{HID_USAGE_PAGE_SIMULATION, HID_USAGE_SIMULATION_BRAKE}, /*ABS_BRAKE*/
{0,0}, /*ABS_HAT0X*/
{0,0}, /*ABS_HAT0Y*/
{0,0}, /*ABS_HAT1X*/
{0,0}, /*ABS_HAT1Y*/
{0,0}, /*ABS_HAT2X*/
{0,0}, /*ABS_HAT2Y*/
{0,0}, /*ABS_HAT3X*/
{0,0}, /*ABS_HAT3Y*/
{HID_USAGE_PAGE_DIGITIZER, HID_USAGE_DIGITIZER_TIP_PRESSURE}, /*ABS_PRESSURE*/
{0, 0}, /*ABS_DISTANCE*/
{HID_USAGE_PAGE_DIGITIZER, HID_USAGE_DIGITIZER_X_TILT}, /*ABS_TILT_X*/
{HID_USAGE_PAGE_DIGITIZER, HID_USAGE_DIGITIZER_Y_TILT}, /*ABS_TILT_Y*/
{0, 0}, /*ABS_TOOL_WIDTH*/
{0, 0},
{0, 0},
{0, 0},
{HID_USAGE_PAGE_CONSUMER, HID_USAGE_CONSUMER_VOLUME} /*ABS_VOLUME*/
};
#define HID_ABS_MAX (ABS_VOLUME+1)
#define TOP_ABS_PAGE (HID_USAGE_PAGE_DIGITIZER+1)
static const BYTE REL_TO_HID_MAP[][2] = {
{HID_USAGE_PAGE_GENERIC, HID_USAGE_GENERIC_X}, /* REL_X */
{HID_USAGE_PAGE_GENERIC, HID_USAGE_GENERIC_Y}, /* REL_Y */
{HID_USAGE_PAGE_GENERIC, HID_USAGE_GENERIC_Z}, /* REL_Z */
{HID_USAGE_PAGE_GENERIC, HID_USAGE_GENERIC_RX}, /* REL_RX */
{HID_USAGE_PAGE_GENERIC, HID_USAGE_GENERIC_RY}, /* REL_RY */
{HID_USAGE_PAGE_GENERIC, HID_USAGE_GENERIC_RZ}, /* REL_RZ */
{0, 0}, /* REL_HWHEEL */
{HID_USAGE_PAGE_GENERIC, HID_USAGE_GENERIC_DIAL}, /* REL_DIAL */
{HID_USAGE_PAGE_GENERIC, HID_USAGE_GENERIC_WHEEL}, /* REL_WHEEL */
{0, 0} /* REL_MISC */
};
#define HID_REL_MAX (REL_MISC+1)
#define TOP_REL_PAGE (HID_USAGE_PAGE_CONSUMER+1)
struct wine_input_absinfo {
struct input_absinfo info;
BYTE report_index;
};
struct wine_input_private {
struct platform_private base;
int buffer_length;
BYTE *last_report_buffer;
BYTE *current_report_buffer;
enum { FIRST, NORMAL, DROPPED } report_state;
int report_descriptor_size;
BYTE *report_descriptor;
int button_start;
BYTE button_map[KEY_MAX];
BYTE rel_map[HID_REL_MAX];
BYTE hat_map[8];
int hat_values[8];
struct wine_input_absinfo abs_map[HID_ABS_MAX];
};
#define test_bit(arr,bit) (((BYTE*)(arr))[(bit)>>3]&(1<<((bit)&7)))
static BYTE *add_axis_block(BYTE *report_ptr, BYTE count, BYTE page, BYTE *usages, BOOL absolute, const struct wine_input_absinfo *absinfo)
{
int i;
memcpy(report_ptr, REPORT_AXIS_HEADER, sizeof(REPORT_AXIS_HEADER));
report_ptr[IDX_AXIS_PAGE] = page;
report_ptr += sizeof(REPORT_AXIS_HEADER);
for (i = 0; i < count; i++)
{
memcpy(report_ptr, REPORT_AXIS_USAGE, sizeof(REPORT_AXIS_USAGE));
report_ptr[IDX_AXIS_USAGE] = usages[i];
report_ptr += sizeof(REPORT_AXIS_USAGE);
}
if (absolute)
{
memcpy(report_ptr, REPORT_ABS_AXIS_TAIL, sizeof(REPORT_ABS_AXIS_TAIL));
if (absinfo)
{
*((int*)&report_ptr[IDX_ABS_LOG_MINIMUM]) = LE_DWORD(absinfo->info.minimum);
*((int*)&report_ptr[IDX_ABS_LOG_MAXIMUM]) = LE_DWORD(absinfo->info.maximum);
*((int*)&report_ptr[IDX_ABS_PHY_MINIMUM]) = LE_DWORD(absinfo->info.minimum);
*((int*)&report_ptr[IDX_ABS_PHY_MAXIMUM]) = LE_DWORD(absinfo->info.maximum);
}
report_ptr[IDX_ABS_AXIS_COUNT] = count;
report_ptr += sizeof(REPORT_ABS_AXIS_TAIL);
}
else
{
memcpy(report_ptr, REPORT_REL_AXIS_TAIL, sizeof(REPORT_REL_AXIS_TAIL));
report_ptr[IDX_REL_AXIS_COUNT] = count;
report_ptr += sizeof(REPORT_REL_AXIS_TAIL);
}
return report_ptr;
}
static const BYTE* what_am_I(struct udev_device *dev)
{
static const BYTE Unknown[2] = {HID_USAGE_PAGE_GENERIC, 0};
static const BYTE Mouse[2] = {HID_USAGE_PAGE_GENERIC, HID_USAGE_GENERIC_MOUSE};
static const BYTE Keyboard[2] = {HID_USAGE_PAGE_GENERIC, HID_USAGE_GENERIC_KEYBOARD};
static const BYTE Gamepad[2] = {HID_USAGE_PAGE_GENERIC, HID_USAGE_GENERIC_GAMEPAD};
static const BYTE Keypad[2] = {HID_USAGE_PAGE_GENERIC, HID_USAGE_GENERIC_KEYPAD};
static const BYTE Tablet[2] = {HID_USAGE_PAGE_DIGITIZER, HID_USAGE_DIGITIZER_PEN};
static const BYTE Touchscreen[2] = {HID_USAGE_PAGE_DIGITIZER, HID_USAGE_DIGITIZER_TOUCH_SCREEN};
static const BYTE Touchpad[2] = {HID_USAGE_PAGE_DIGITIZER, HID_USAGE_DIGITIZER_TOUCH_PAD};
struct udev_device *parent = dev;
/* Look to the parents until we get a clue */
while (parent)
{
if (udev_device_get_property_value(parent, "ID_INPUT_MOUSE"))
return Mouse;
else if (udev_device_get_property_value(parent, "ID_INPUT_KEYBOARD"))
return Keyboard;
else if (udev_device_get_property_value(parent, "ID_INPUT_JOYSTICK"))
return Gamepad;
else if (udev_device_get_property_value(parent, "ID_INPUT_KEY"))
return Keypad;
else if (udev_device_get_property_value(parent, "ID_INPUT_TOUCHPAD"))
return Touchpad;
else if (udev_device_get_property_value(parent, "ID_INPUT_TOUCHSCREEN"))
return Touchscreen;
else if (udev_device_get_property_value(parent, "ID_INPUT_TABLET"))
return Tablet;
parent = udev_device_get_parent_with_subsystem_devtype(parent, "input", NULL);
}
return Unknown;
}
static void set_button_value(int index, int value, BYTE* buffer)
{
int bindex = index / 8;
int b = index % 8;
BYTE mask;
mask = 1<<b;
if (value)
buffer[bindex] = buffer[bindex] | mask;
else
{
mask = ~mask;
buffer[bindex] = buffer[bindex] & mask;
}
}
static void set_abs_axis_value(struct wine_input_private *ext, int code, int value)
{
int index;
/* check for hatswitches */
if (code <= ABS_HAT3Y && code >= ABS_HAT0X)
{
index = code - ABS_HAT0X;
ext->hat_values[index] = value;
if ((code - ABS_HAT0X) % 2)
index--;
/* 8 1 2
* 7 0 3
* 6 5 4 */
if (ext->hat_values[index] == 0)
{
if (ext->hat_values[index+1] == 0)
value = 0;
else if (ext->hat_values[index+1] < 0)
value = 1;
else
value = 5;
}
else if (ext->hat_values[index] > 0)
{
if (ext->hat_values[index+1] == 0)
value = 3;
else if (ext->hat_values[index+1] < 0)
value = 2;
else
value = 4;
}
else
{
if (ext->hat_values[index+1] == 0)
value = 7;
else if (ext->hat_values[index+1] < 0)
value = 8;
else
value = 6;
}
ext->current_report_buffer[ext->hat_map[index]] = value;
}
else if (code < HID_ABS_MAX && ABS_TO_HID_MAP[code][0] != 0)
{
index = ext->abs_map[code].report_index;
*((DWORD*)&ext->current_report_buffer[index]) = LE_DWORD(value);
}
}
static void set_rel_axis_value(struct wine_input_private *ext, int code, int value)
{
int index;
if (code < HID_REL_MAX && REL_TO_HID_MAP[code][0] != 0)
{
index = ext->rel_map[code];
if (value > 127) value = 127;
if (value < -127) value = -127;
ext->current_report_buffer[index] = value;
}
}
static INT count_buttons(int device_fd, BYTE *map)
{
int i;
int button_count = 0;
BYTE keybits[(KEY_MAX+7)/8];
if (ioctl(device_fd, EVIOCGBIT(EV_KEY, sizeof(keybits)), keybits) == -1)
{
WARN("ioctl(EVIOCGBIT, EV_KEY) failed: %d %s\n", errno, strerror(errno));
return FALSE;
}
for (i = BTN_MISC; i < KEY_MAX; i++)
{
if (test_bit(keybits, i))
{
if (map) map[i] = button_count;
button_count++;
}
}
return button_count;
}
static INT count_abs_axis(int device_fd)
{
BYTE absbits[(ABS_MAX+7)/8];
int abs_count = 0;
int i;
if (ioctl(device_fd, EVIOCGBIT(EV_ABS, sizeof(absbits)), absbits) == -1)
{
WARN("ioctl(EVIOCGBIT, EV_ABS) failed: %d %s\n", errno, strerror(errno));
return 0;
}
for (i = 0; i < HID_ABS_MAX; i++)
if (test_bit(absbits, i) &&
(ABS_TO_HID_MAP[i][1] >= HID_USAGE_GENERIC_X &&
ABS_TO_HID_MAP[i][1] <= HID_USAGE_GENERIC_WHEEL))
abs_count++;
return abs_count;
}
static BOOL build_report_descriptor(struct wine_input_private *ext, struct udev_device *dev)
{
int abs_pages[TOP_ABS_PAGE][HID_ABS_MAX+1];
int rel_pages[TOP_REL_PAGE][HID_REL_MAX+1];
BYTE absbits[(ABS_MAX+7)/8];
BYTE relbits[(REL_MAX+7)/8];
BYTE *report_ptr;
INT i, descript_size;
INT report_size;
INT button_count, abs_count, rel_count, hat_count;
const BYTE *device_usage = what_am_I(dev);
if (ioctl(ext->base.device_fd, EVIOCGBIT(EV_REL, sizeof(relbits)), relbits) == -1)
{
WARN("ioctl(EVIOCGBIT, EV_REL) failed: %d %s\n", errno, strerror(errno));
return FALSE;
}
if (ioctl(ext->base.device_fd, EVIOCGBIT(EV_ABS, sizeof(absbits)), absbits) == -1)
{
WARN("ioctl(EVIOCGBIT, EV_ABS) failed: %d %s\n", errno, strerror(errno));
return FALSE;
}
descript_size = sizeof(REPORT_HEADER) + sizeof(REPORT_TAIL);
report_size = 0;
abs_count = 0;
memset(abs_pages, 0, sizeof(abs_pages));
for (i = 0; i < HID_ABS_MAX; i++)
if (test_bit(absbits, i))
{
abs_pages[ABS_TO_HID_MAP[i][0]][0]++;
abs_pages[ABS_TO_HID_MAP[i][0]][abs_pages[ABS_TO_HID_MAP[i][0]][0]] = i;
ioctl(ext->base.device_fd, EVIOCGABS(i), &(ext->abs_map[i]));
}
/* Skip page 0, aka HID_USAGE_PAGE_UNDEFINED */
for (i = 1; i < TOP_ABS_PAGE; i++)
if (abs_pages[i][0] > 0)
{
int j;
descript_size += sizeof(REPORT_AXIS_USAGE) * abs_pages[i][0];
for (j = 1; j <= abs_pages[i][0]; j++)
{
ext->abs_map[abs_pages[i][j]].report_index = report_size;
report_size+=4;
}
abs_count++;
}
descript_size += sizeof(REPORT_AXIS_HEADER) * abs_count;
descript_size += sizeof(REPORT_ABS_AXIS_TAIL) * abs_count;
rel_count = 0;
memset(rel_pages, 0, sizeof(rel_pages));
for (i = 0; i < HID_REL_MAX; i++)
if (test_bit(relbits, i))
{
rel_pages[REL_TO_HID_MAP[i][0]][0]++;
rel_pages[REL_TO_HID_MAP[i][0]][rel_pages[REL_TO_HID_MAP[i][0]][0]] = i;
}
/* Skip page 0, aka HID_USAGE_PAGE_UNDEFINED */
for (i = 1; i < TOP_REL_PAGE; i++)
if (rel_pages[i][0] > 0)
{
int j;
descript_size += sizeof(REPORT_AXIS_USAGE) * rel_pages[i][0];
for (j = 1; j <= rel_pages[i][0]; j++)
{
ext->rel_map[rel_pages[i][j]] = report_size;
report_size++;
}
rel_count++;
}
descript_size += sizeof(REPORT_AXIS_HEADER) * rel_count;
descript_size += sizeof(REPORT_REL_AXIS_TAIL) * rel_count;
/* For now lump all buttons just into incremental usages, Ignore Keys */
ext->button_start = report_size;
button_count = count_buttons(ext->base.device_fd, ext->button_map);
if (button_count)
{
descript_size += sizeof(REPORT_BUTTONS);
if (button_count % 8)
descript_size += sizeof(REPORT_PADDING);
report_size += (button_count + 7) / 8;
}
hat_count = 0;
for (i = ABS_HAT0X; i <=ABS_HAT3X; i+=2)
if (test_bit(absbits, i))
{
ext->hat_map[i - ABS_HAT0X] = report_size;
ext->hat_values[i - ABS_HAT0X] = 0;
ext->hat_values[i - ABS_HAT0X + 1] = 0;
report_size++;
hat_count++;
}
if (hat_count > 0)
descript_size += sizeof(REPORT_HATSWITCH);
TRACE("Report Descriptor will be %i bytes\n", descript_size);
TRACE("Report will be %i bytes\n", report_size);
ext->report_descriptor = HeapAlloc(GetProcessHeap(), 0, descript_size);
if (!ext->report_descriptor)
{
ERR("Failed to alloc report descriptor\n");
return FALSE;
}
report_ptr = ext->report_descriptor;
memcpy(report_ptr, REPORT_HEADER, sizeof(REPORT_HEADER));
report_ptr[IDX_HEADER_PAGE] = device_usage[0];
report_ptr[IDX_HEADER_USAGE] = device_usage[1];
report_ptr += sizeof(REPORT_HEADER);
if (abs_count)
{
for (i = 1; i < TOP_ABS_PAGE; i++)
{
if (abs_pages[i][0])
{
BYTE usages[HID_ABS_MAX];
int j;
for (j = 0; j < abs_pages[i][0]; j++)
usages[j] = ABS_TO_HID_MAP[abs_pages[i][j+1]][1];
report_ptr = add_axis_block(report_ptr, abs_pages[i][0], i, usages, TRUE, &ext->abs_map[abs_pages[i][1]]);
}
}
}
if (rel_count)
{
for (i = 1; i < TOP_REL_PAGE; i++)
{
if (rel_pages[i][0])
{
BYTE usages[HID_REL_MAX];
int j;
for (j = 0; j < rel_pages[i][0]; j++)
usages[j] = REL_TO_HID_MAP[rel_pages[i][j+1]][1];
report_ptr = add_axis_block(report_ptr, rel_pages[i][0], i, usages, FALSE, NULL);
}
}
}
if (button_count)
{
report_ptr = add_button_block(report_ptr, 1, button_count);
if (button_count % 8)
{
BYTE padding = 8 - (button_count % 8);
report_ptr = add_padding_block(report_ptr, padding);
}
}
if (hat_count)
report_ptr = add_hatswitch(report_ptr, hat_count);
memcpy(report_ptr, REPORT_TAIL, sizeof(REPORT_TAIL));
ext->report_descriptor_size = descript_size;
ext->buffer_length = report_size;
ext->current_report_buffer = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, report_size);
if (ext->current_report_buffer == NULL)
{
ERR("Failed to alloc report buffer\n");
HeapFree(GetProcessHeap(), 0, ext->report_descriptor);
return FALSE;
}
ext->last_report_buffer = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, report_size);
if (ext->last_report_buffer == NULL)
{
ERR("Failed to alloc report buffer\n");
HeapFree(GetProcessHeap(), 0, ext->report_descriptor);
HeapFree(GetProcessHeap(), 0, ext->current_report_buffer);
return FALSE;
}
ext->report_state = FIRST;
/* Initialize axis in the report */
for (i = 0; i < HID_ABS_MAX; i++)
if (test_bit(absbits, i))
set_abs_axis_value(ext, i, ext->abs_map[i].info.value);
return TRUE;
}
static BOOL set_report_from_event(struct wine_input_private *ext, struct input_event *ie)
{
switch(ie->type)
{
#ifdef EV_SYN
case EV_SYN:
switch (ie->code)
{
case SYN_REPORT:
if (ext->report_state == NORMAL)
{
memcpy(ext->last_report_buffer, ext->current_report_buffer, ext->buffer_length);
return TRUE;
}
else
{
if (ext->report_state == DROPPED)
memcpy(ext->current_report_buffer, ext->last_report_buffer, ext->buffer_length);
ext->report_state = NORMAL;
}
break;
case SYN_DROPPED:
TRACE_(hid_report)("received SY_DROPPED\n");
ext->report_state = DROPPED;
}
return FALSE;
#endif
#ifdef EV_MSC
case EV_MSC:
return FALSE;
#endif
case EV_KEY:
set_button_value(ext->button_start + ext->button_map[ie->code], ie->value, ext->current_report_buffer);
return FALSE;
case EV_ABS:
set_abs_axis_value(ext, ie->code, ie->value);
return FALSE;
case EV_REL:
set_rel_axis_value(ext, ie->code, ie->value);
return FALSE;
default:
ERR("TODO: Process Report (%i, %i)\n",ie->type, ie->code);
return FALSE;
}
}
#endif
static inline WCHAR *strdupAtoW(const char *src)
{
WCHAR *dst;
DWORD len;
if (!src) return NULL;
len = MultiByteToWideChar(CP_UNIXCP, 0, src, -1, NULL, 0);
if ((dst = HeapAlloc(GetProcessHeap(), 0, len * sizeof(WCHAR))))
MultiByteToWideChar(CP_UNIXCP, 0, src, -1, dst, len);
return dst;
}
static WCHAR *get_sysattr_string(struct udev_device *dev, const char *sysattr)
{
const char *attr = udev_device_get_sysattr_value(dev, sysattr);
if (!attr)
{
WARN("Could not get %s from device\n", sysattr);
return NULL;
}
return strdupAtoW(attr);
}
static int compare_platform_device(DEVICE_OBJECT *device, void *platform_dev)
{
struct udev_device *dev1 = impl_from_DEVICE_OBJECT(device)->udev_device;
struct udev_device *dev2 = platform_dev;
return strcmp(udev_device_get_syspath(dev1), udev_device_get_syspath(dev2));
}
static NTSTATUS hidraw_get_reportdescriptor(DEVICE_OBJECT *device, BYTE *buffer, DWORD length, DWORD *out_length)
{
#ifdef HAVE_LINUX_HIDRAW_H
struct hidraw_report_descriptor descriptor;
struct platform_private *private = impl_from_DEVICE_OBJECT(device);
if (ioctl(private->device_fd, HIDIOCGRDESCSIZE, &descriptor.size) == -1)
{
WARN("ioctl(HIDIOCGRDESCSIZE) failed: %d %s\n", errno, strerror(errno));
return STATUS_UNSUCCESSFUL;
}
*out_length = descriptor.size;
if (length < descriptor.size)
return STATUS_BUFFER_TOO_SMALL;
if (!descriptor.size)
return STATUS_SUCCESS;
if (ioctl(private->device_fd, HIDIOCGRDESC, &descriptor) == -1)
{
WARN("ioctl(HIDIOCGRDESC) failed: %d %s\n", errno, strerror(errno));
return STATUS_UNSUCCESSFUL;
}
memcpy(buffer, descriptor.value, descriptor.size);
return STATUS_SUCCESS;
#else
return STATUS_NOT_IMPLEMENTED;
#endif
}
static NTSTATUS hidraw_get_string(DEVICE_OBJECT *device, DWORD index, WCHAR *buffer, DWORD length)
{
struct udev_device *usbdev;
struct platform_private *private = impl_from_DEVICE_OBJECT(device);
WCHAR *str = NULL;
usbdev = udev_device_get_parent_with_subsystem_devtype(private->udev_device, "usb", "usb_device");
if (usbdev)
{
switch (index)
{
case HID_STRING_ID_IPRODUCT:
str = get_sysattr_string(usbdev, "product");
break;
case HID_STRING_ID_IMANUFACTURER:
str = get_sysattr_string(usbdev, "manufacturer");
break;
case HID_STRING_ID_ISERIALNUMBER:
str = get_sysattr_string(usbdev, "serial");
break;
default:
ERR("Unhandled string index %08x\n", index);
return STATUS_NOT_IMPLEMENTED;
}
}
else
{
#ifdef HAVE_LINUX_HIDRAW_H
switch (index)
{
case HID_STRING_ID_IPRODUCT:
{
char buf[MAX_PATH];
if (ioctl(private->device_fd, HIDIOCGRAWNAME(MAX_PATH), buf) == -1)
WARN("ioctl(HIDIOCGRAWNAME) failed: %d %s\n", errno, strerror(errno));
else
str = strdupAtoW(buf);
break;
}
case HID_STRING_ID_IMANUFACTURER:
break;
case HID_STRING_ID_ISERIALNUMBER:
break;
default:
ERR("Unhandled string index %08x\n", index);
return STATUS_NOT_IMPLEMENTED;
}
#else
return STATUS_NOT_IMPLEMENTED;
#endif
}
if (!str)
{
if (!length) return STATUS_BUFFER_TOO_SMALL;
buffer[0] = 0;
return STATUS_SUCCESS;
}
if (length <= strlenW(str))
{
HeapFree(GetProcessHeap(), 0, str);
return STATUS_BUFFER_TOO_SMALL;
}
strcpyW(buffer, str);
HeapFree(GetProcessHeap(), 0, str);
return STATUS_SUCCESS;
}
static DWORD CALLBACK device_report_thread(void *args)
{
DEVICE_OBJECT *device = (DEVICE_OBJECT*)args;
struct platform_private *private = impl_from_DEVICE_OBJECT(device);
struct pollfd plfds[2];
plfds[0].fd = private->device_fd;
plfds[0].events = POLLIN;
plfds[0].revents = 0;
plfds[1].fd = private->control_pipe[0];
plfds[1].events = POLLIN;
plfds[1].revents = 0;
while (1)
{
int size;
BYTE report_buffer[1024];
if (poll(plfds, 2, -1) <= 0) continue;
if (plfds[1].revents)
break;
size = read(plfds[0].fd, report_buffer, sizeof(report_buffer));
if (size == -1)
TRACE_(hid_report)("Read failed. Likely an unplugged device %d %s\n", errno, strerror(errno));
else if (size == 0)
TRACE_(hid_report)("Failed to read report\n");
else
process_hid_report(device, report_buffer, size);
}
return 0;
}
static NTSTATUS begin_report_processing(DEVICE_OBJECT *device)
{
struct platform_private *private = impl_from_DEVICE_OBJECT(device);
if (private->report_thread)
return STATUS_SUCCESS;
if (pipe(private->control_pipe) != 0)
{
ERR("Control pipe creation failed\n");
return STATUS_UNSUCCESSFUL;
}
private->report_thread = CreateThread(NULL, 0, device_report_thread, device, 0, NULL);
if (!private->report_thread)
{
ERR("Unable to create device report thread\n");
close(private->control_pipe[0]);
close(private->control_pipe[1]);
return STATUS_UNSUCCESSFUL;
}
else
return STATUS_SUCCESS;
}
static NTSTATUS hidraw_set_output_report(DEVICE_OBJECT *device, UCHAR id, BYTE *report, DWORD length, ULONG_PTR *written)
{
struct platform_private* ext = impl_from_DEVICE_OBJECT(device);
int rc;
if (id != 0)
rc = write(ext->device_fd, report, length);
else
{
BYTE report_buffer[1024];
if (length + 1 > sizeof(report_buffer))
{
ERR("Output report buffer too small\n");
return STATUS_UNSUCCESSFUL;
}
report_buffer[0] = 0;
memcpy(&report_buffer[1], report, length);
rc = write(ext->device_fd, report_buffer, length + 1);
}
if (rc > 0)
{
*written = rc;
return STATUS_SUCCESS;
}
else
{
TRACE("write failed: %d %d %s\n", rc, errno, strerror(errno));
*written = 0;
return STATUS_UNSUCCESSFUL;
}
}
static NTSTATUS hidraw_get_feature_report(DEVICE_OBJECT *device, UCHAR id, BYTE *report, DWORD length, ULONG_PTR *read)
{
#if defined(HAVE_LINUX_HIDRAW_H) && defined(HIDIOCGFEATURE)
int rc;
struct platform_private* ext = impl_from_DEVICE_OBJECT(device);
report[0] = id;
length = min(length, 0x1fff);
rc = ioctl(ext->device_fd, HIDIOCGFEATURE(length), report);
if (rc >= 0)
{
*read = rc;
return STATUS_SUCCESS;
}
else
{
TRACE_(hid_report)("ioctl(HIDIOCGFEATURE(%d)) failed: %d %s\n", length, errno, strerror(errno));
*read = 0;
return STATUS_UNSUCCESSFUL;
}
#else
*read = 0;
return STATUS_NOT_IMPLEMENTED;
#endif
}
static NTSTATUS hidraw_set_feature_report(DEVICE_OBJECT *device, UCHAR id, BYTE *report, DWORD length, ULONG_PTR *written)
{
#if defined(HAVE_LINUX_HIDRAW_H) && defined(HIDIOCSFEATURE)
int rc;
struct platform_private* ext = impl_from_DEVICE_OBJECT(device);
BYTE *feature_buffer;
BYTE buffer[8192];
if (id == 0)
{
if (length + 1 > sizeof(buffer))
{
ERR("Output feature buffer too small\n");
return STATUS_UNSUCCESSFUL;
}
buffer[0] = 0;
memcpy(&buffer[1], report, length);
feature_buffer = buffer;
length = length + 1;
}
else
feature_buffer = report;
length = min(length, 0x1fff);
rc = ioctl(ext->device_fd, HIDIOCSFEATURE(length), feature_buffer);
if (rc >= 0)
{
*written = rc;
return STATUS_SUCCESS;
}
else
{
TRACE_(hid_report)("ioctl(HIDIOCSFEATURE(%d)) failed: %d %s\n", length, errno, strerror(errno));
*written = 0;
return STATUS_UNSUCCESSFUL;
}
#else
*written = 0;
return STATUS_NOT_IMPLEMENTED;
#endif
}
static const platform_vtbl hidraw_vtbl =
{
compare_platform_device,
hidraw_get_reportdescriptor,
hidraw_get_string,
begin_report_processing,
hidraw_set_output_report,
hidraw_get_feature_report,
hidraw_set_feature_report,
};
#ifdef HAS_PROPER_INPUT_HEADER
static inline struct wine_input_private *input_impl_from_DEVICE_OBJECT(DEVICE_OBJECT *device)
{
return (struct wine_input_private*)get_platform_private(device);
}
static NTSTATUS lnxev_get_reportdescriptor(DEVICE_OBJECT *device, BYTE *buffer, DWORD length, DWORD *out_length)
{
struct wine_input_private *ext = input_impl_from_DEVICE_OBJECT(device);
*out_length = ext->report_descriptor_size;
if (length < ext->report_descriptor_size)
return STATUS_BUFFER_TOO_SMALL;
memcpy(buffer, ext->report_descriptor, ext->report_descriptor_size);
return STATUS_SUCCESS;
}
static NTSTATUS lnxev_get_string(DEVICE_OBJECT *device, DWORD index, WCHAR *buffer, DWORD length)
{
struct wine_input_private *ext = input_impl_from_DEVICE_OBJECT(device);
char str[255];
str[0] = 0;
switch (index)
{
case HID_STRING_ID_IPRODUCT:
ioctl(ext->base.device_fd, EVIOCGNAME(sizeof(str)), str);
break;
case HID_STRING_ID_IMANUFACTURER:
strcpy(str,"evdev");
break;
case HID_STRING_ID_ISERIALNUMBER:
ioctl(ext->base.device_fd, EVIOCGUNIQ(sizeof(str)), str);
break;
default:
ERR("Unhandled string index %i\n", index);
}
MultiByteToWideChar(CP_ACP, 0, str, -1, buffer, length);
return STATUS_SUCCESS;
}
static DWORD CALLBACK lnxev_device_report_thread(void *args)
{
DEVICE_OBJECT *device = (DEVICE_OBJECT*)args;
struct wine_input_private *private = input_impl_from_DEVICE_OBJECT(device);
struct pollfd plfds[2];
plfds[0].fd = private->base.device_fd;
plfds[0].events = POLLIN;
plfds[0].revents = 0;
plfds[1].fd = private->base.control_pipe[0];
plfds[1].events = POLLIN;
plfds[1].revents = 0;
while (1)
{
int size;
struct input_event ie;
if (poll(plfds, 2, -1) <= 0) continue;
if (plfds[1].revents || !private->current_report_buffer || private->buffer_length == 0)
break;
size = read(plfds[0].fd, &ie, sizeof(ie));
if (size == -1)
TRACE_(hid_report)("Read failed. Likely an unplugged device\n");
else if (size == 0)
TRACE_(hid_report)("Failed to read report\n");
else if (set_report_from_event(private, &ie))
process_hid_report(device, private->current_report_buffer, private->buffer_length);
}
return 0;
}
static NTSTATUS lnxev_begin_report_processing(DEVICE_OBJECT *device)
{
struct wine_input_private *private = input_impl_from_DEVICE_OBJECT(device);
if (private->base.report_thread)
return STATUS_SUCCESS;
if (pipe(private->base.control_pipe) != 0)
{
ERR("Control pipe creation failed\n");
return STATUS_UNSUCCESSFUL;
}
private->base.report_thread = CreateThread(NULL, 0, lnxev_device_report_thread, device, 0, NULL);
if (!private->base.report_thread)
{
ERR("Unable to create device report thread\n");
close(private->base.control_pipe[0]);
close(private->base.control_pipe[1]);
return STATUS_UNSUCCESSFUL;
}
return STATUS_SUCCESS;
}
static NTSTATUS lnxev_set_output_report(DEVICE_OBJECT *device, UCHAR id, BYTE *report, DWORD length, ULONG_PTR *written)
{
*written = 0;
return STATUS_NOT_IMPLEMENTED;
}
static NTSTATUS lnxev_get_feature_report(DEVICE_OBJECT *device, UCHAR id, BYTE *report, DWORD length, ULONG_PTR *read)
{
*read = 0;
return STATUS_NOT_IMPLEMENTED;
}
static NTSTATUS lnxev_set_feature_report(DEVICE_OBJECT *device, UCHAR id, BYTE *report, DWORD length, ULONG_PTR *written)
{
*written = 0;
return STATUS_NOT_IMPLEMENTED;
}
static const platform_vtbl lnxev_vtbl = {
compare_platform_device,
lnxev_get_reportdescriptor,
lnxev_get_string,
lnxev_begin_report_processing,
lnxev_set_output_report,
lnxev_get_feature_report,
lnxev_set_feature_report,
};
#endif
static int check_same_device(DEVICE_OBJECT *device, void* context)
{
return !compare_platform_device(device, context);
}
static int parse_uevent_info(const char *uevent, DWORD *vendor_id,
DWORD *product_id, WORD *input, WCHAR **serial_number)
{
DWORD bus_type;
char *tmp;
char *saveptr = NULL;
char *line;
char *key;
char *value;
int found_id = 0;
int found_serial = 0;
tmp = heap_alloc(strlen(uevent) + 1);
strcpy(tmp, uevent);
line = strtok_r(tmp, "\n", &saveptr);
while (line != NULL)
{
/* line: "KEY=value" */
key = line;
value = strchr(line, '=');
if (!value)
{
goto next_line;
}
*value = '\0';
value++;
if (strcmp(key, "HID_ID") == 0)
{
/**
* type vendor product
* HID_ID=0003:000005AC:00008242
**/
int ret = sscanf(value, "%x:%x:%x", &bus_type, vendor_id, product_id);
if (ret == 3)
found_id = 1;
}
else if (strcmp(key, "HID_UNIQ") == 0)
{
/* The caller has to free the serial number */
if (*value)
{
*serial_number = strdupAtoW(value);
found_serial = 1;
}
}
else if (strcmp(key, "HID_PHYS") == 0)
{
const char *input_no = strstr(value, "input");
if (input_no)
*input = atoi(input_no+5 );
}
next_line:
line = strtok_r(NULL, "\n", &saveptr);
}
heap_free(tmp);
return (found_id && found_serial);
}
static DWORD a_to_bcd(const char *s)
{
DWORD r = 0;
const char *c;
int shift = strlen(s) - 1;
for (c = s; *c; ++c)
{
r |= (*c - '0') << (shift * 4);
--shift;
}
return r;
}
static void try_add_device(struct udev_device *dev)
{
DWORD vid = 0, pid = 0, version = 0;
struct udev_device *hiddev = NULL, *walk_device;
DEVICE_OBJECT *device = NULL;
const char *subsystem;
const char *devnode;
WCHAR *serial = NULL;
BOOL is_gamepad = FALSE;
WORD input = -1;
int fd;
static const CHAR *base_serial = "0000";
if (!(devnode = udev_device_get_devnode(dev)))
return;
if ((fd = open(devnode, O_RDWR)) == -1)
{
WARN("Unable to open udev device %s: %s\n", debugstr_a(devnode), strerror(errno));
return;
}
subsystem = udev_device_get_subsystem(dev);
hiddev = udev_device_get_parent_with_subsystem_devtype(dev, "hid", NULL);
if (hiddev)
{
const char *bcdDevice = NULL;
#ifdef HAS_PROPER_INPUT_HEADER
const platform_vtbl *other_vtbl = NULL;
DEVICE_OBJECT *dup = NULL;
if (strcmp(subsystem, "hidraw") == 0)
other_vtbl = &lnxev_vtbl;
else if (strcmp(subsystem, "input") == 0)
other_vtbl = &hidraw_vtbl;
if (other_vtbl)
dup = bus_enumerate_hid_devices(other_vtbl, check_same_device, dev);
if (dup)
{
TRACE("Duplicate cross bus device (%p) found, not adding the new one\n", dup);
close(fd);
return;
}
#endif
parse_uevent_info(udev_device_get_sysattr_value(hiddev, "uevent"),
&vid, &pid, &input, &serial);
if (serial == NULL)
serial = strdupAtoW(base_serial);
walk_device = dev;
while (walk_device && !bcdDevice)
{
bcdDevice = udev_device_get_sysattr_value(walk_device, "bcdDevice");
walk_device = udev_device_get_parent(walk_device);
}
if (bcdDevice)
{
version = a_to_bcd(bcdDevice);
}
}
#ifdef HAS_PROPER_INPUT_HEADER
else
{
struct input_id device_id = {0};
char device_uid[255];
if (ioctl(fd, EVIOCGID, &device_id) < 0)
WARN("ioctl(EVIOCGID) failed: %d %s\n", errno, strerror(errno));
device_uid[0] = 0;
if (ioctl(fd, EVIOCGUNIQ(254), device_uid) >= 0 && device_uid[0])
serial = strdupAtoW(device_uid);
vid = device_id.vendor;
pid = device_id.product;
version = device_id.version;
}
#else
else
WARN("Could not get device to query VID, PID, Version and Serial\n");
#endif
if (is_xbox_gamepad(vid, pid))
is_gamepad = TRUE;
#ifdef HAS_PROPER_INPUT_HEADER
else
{
int axes=0, buttons=0;
axes = count_abs_axis(fd);
buttons = count_buttons(fd, NULL);
is_gamepad = (axes == 6 && buttons >= 14);
}
#endif
if (input == (WORD)-1 && is_gamepad)
input = 0;
TRACE("Found udev device %s (vid %04x, pid %04x, version %u, serial %s)\n",
debugstr_a(devnode), vid, pid, version, debugstr_w(serial));
if (strcmp(subsystem, "hidraw") == 0)
{
device = bus_create_hid_device(hidraw_busidW, vid, pid, input, version, 0, serial, is_gamepad,
&hidraw_vtbl, sizeof(struct platform_private));
}
#ifdef HAS_PROPER_INPUT_HEADER
else if (strcmp(subsystem, "input") == 0)
{
device = bus_create_hid_device(lnxev_busidW, vid, pid, input, version, 0, serial, is_gamepad,
&lnxev_vtbl, sizeof(struct wine_input_private));
}
#endif
if (device)
{
struct platform_private *private = impl_from_DEVICE_OBJECT(device);
private->udev_device = udev_device_ref(dev);
private->device_fd = fd;
#ifdef HAS_PROPER_INPUT_HEADER
if (strcmp(subsystem, "input") == 0)
if (!build_report_descriptor((struct wine_input_private*)private, dev))
{
ERR("Building report descriptor failed, removing device\n");
close(fd);
udev_device_unref(dev);
bus_unlink_hid_device(device);
bus_remove_hid_device(device);
HeapFree(GetProcessHeap(), 0, serial);
return;
}
#endif
IoInvalidateDeviceRelations(bus_pdo, BusRelations);
}
else
{
WARN("Ignoring device %s with subsystem %s\n", debugstr_a(devnode), subsystem);
close(fd);
}
HeapFree(GetProcessHeap(), 0, serial);
}
static void try_remove_device(struct udev_device *dev)
{
DEVICE_OBJECT *device = NULL;
struct platform_private* private;
#ifdef HAS_PROPER_INPUT_HEADER
BOOL is_input = FALSE;
#endif
device = bus_find_hid_device(&hidraw_vtbl, dev);
#ifdef HAS_PROPER_INPUT_HEADER
if (device == NULL)
{
device = bus_find_hid_device(&lnxev_vtbl, dev);
is_input = TRUE;
}
#endif
if (!device) return;
bus_unlink_hid_device(device);
IoInvalidateDeviceRelations(bus_pdo, BusRelations);
private = impl_from_DEVICE_OBJECT(device);
if (private->report_thread)
{
write(private->control_pipe[1], "q", 1);
WaitForSingleObject(private->report_thread, INFINITE);
close(private->control_pipe[0]);
close(private->control_pipe[1]);
CloseHandle(private->report_thread);
#ifdef HAS_PROPER_INPUT_HEADER
if (strcmp(udev_device_get_subsystem(dev), "input") == 0)
{
HeapFree(GetProcessHeap(), 0, ((struct wine_input_private*)private)->current_report_buffer);
HeapFree(GetProcessHeap(), 0, ((struct wine_input_private*)private)->last_report_buffer);
}
#endif
}
#ifdef HAS_PROPER_INPUT_HEADER
if (is_input)
{
struct wine_input_private *ext = (struct wine_input_private*)private;
HeapFree(GetProcessHeap(), 0, ext->report_descriptor);
}
#endif
dev = private->udev_device;
close(private->device_fd);
bus_remove_hid_device(device);
udev_device_unref(dev);
}
static void build_initial_deviceset(void)
{
struct udev_enumerate *enumerate;
struct udev_list_entry *devices, *dev_list_entry;
enumerate = udev_enumerate_new(udev_context);
if (!enumerate)
{
WARN("Unable to create udev enumeration object\n");
return;
}
if (!disable_hidraw)
if (udev_enumerate_add_match_subsystem(enumerate, "hidraw") < 0)
WARN("Failed to add subsystem 'hidraw' to enumeration\n");
#ifdef HAS_PROPER_INPUT_HEADER
if (!disable_input)
{
if (udev_enumerate_add_match_subsystem(enumerate, "input") < 0)
WARN("Failed to add subsystem 'input' to enumeration\n");
}
#endif
if (udev_enumerate_scan_devices(enumerate) < 0)
WARN("Enumeration scan failed\n");
devices = udev_enumerate_get_list_entry(enumerate);
udev_list_entry_foreach(dev_list_entry, devices)
{
struct udev_device *dev;
const char *path;
path = udev_list_entry_get_name(dev_list_entry);
if ((dev = udev_device_new_from_syspath(udev_context, path)))
{
try_add_device(dev);
udev_device_unref(dev);
}
}
udev_enumerate_unref(enumerate);
}
static struct udev_monitor *create_monitor(struct pollfd *pfd)
{
struct udev_monitor *monitor;
int systems = 0;
monitor = udev_monitor_new_from_netlink(udev_context, "udev");
if (!monitor)
{
WARN("Unable to get udev monitor object\n");
return NULL;
}
if (!disable_hidraw)
{
if (udev_monitor_filter_add_match_subsystem_devtype(monitor, "hidraw", NULL) < 0)
WARN("Failed to add 'hidraw' subsystem to monitor\n");
else
systems++;
}
#ifdef HAS_PROPER_INPUT_HEADER
if (!disable_input)
{
if (udev_monitor_filter_add_match_subsystem_devtype(monitor, "input", NULL) < 0)
WARN("Failed to add 'input' subsystem to monitor\n");
else
systems++;
}
#endif
if (systems == 0)
{
WARN("No subsystems added to monitor\n");
goto error;
}
if (udev_monitor_enable_receiving(monitor) < 0)
goto error;
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[2];
pfd[1].fd = deviceloop_control[0];
pfd[1].events = POLLIN;
pfd[1].revents = 0;
monitor = create_monitor(&pfd[0]);
build_initial_deviceset();
SetEvent(init_done);
while (monitor)
{
if (poll(pfd, 2, -1) <= 0) continue;
if (pfd[1].revents) break;
process_monitor_event(monitor);
}
TRACE("Monitor thread exiting\n");
if (monitor)
udev_monitor_unref(monitor);
return 0;
}
static int device_unload(DEVICE_OBJECT *device, void *context)
{
try_remove_device(impl_from_DEVICE_OBJECT(device)->udev_device);
return 1;
}
void udev_driver_unload( void )
{
TRACE("Unload Driver\n");
if (!deviceloop_handle)
return;
write(deviceloop_control[1], "q", 1);
WaitForSingleObject(deviceloop_handle, INFINITE);
close(deviceloop_control[0]);
close(deviceloop_control[1]);
CloseHandle(deviceloop_handle);
bus_enumerate_hid_devices(&hidraw_vtbl, device_unload, NULL);
#ifdef HAS_PROPER_INPUT_HEADER
bus_enumerate_hid_devices(&lnxev_vtbl, device_unload, NULL);
#endif
}
NTSTATUS udev_driver_init(void)
{
HANDLE events[2];
DWORD result;
static const WCHAR hidraw_disabledW[] = {'D','i','s','a','b','l','e','H','i','d','r','a','w',0};
static const UNICODE_STRING hidraw_disabled = {sizeof(hidraw_disabledW) - sizeof(WCHAR), sizeof(hidraw_disabledW), (WCHAR*)hidraw_disabledW};
static const WCHAR input_disabledW[] = {'D','i','s','a','b','l','e','I','n','p','u','t',0};
static const UNICODE_STRING input_disabled = {sizeof(input_disabledW) - sizeof(WCHAR), sizeof(input_disabledW), (WCHAR*)input_disabledW};
if (pipe(deviceloop_control) != 0)
{
ERR("Control pipe creation failed\n");
return STATUS_UNSUCCESSFUL;
}
if (!(udev_context = udev_new()))
{
ERR("Can't create udev object\n");
goto error;
}
disable_hidraw = check_bus_option(&hidraw_disabled, 0);
if (disable_hidraw)
TRACE("UDEV hidraw devices disabled in registry\n");
#ifdef HAS_PROPER_INPUT_HEADER
disable_input = check_bus_option(&input_disabled, 0);
if (disable_input)
TRACE("UDEV input devices disabled in registry\n");
#endif
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]);
if (result == WAIT_OBJECT_0)
{
deviceloop_handle = events[1];
TRACE("Initialization successful\n");
return STATUS_SUCCESS;
}
CloseHandle(events[1]);
error:
ERR("Failed to initialize udev device thread\n");
close(deviceloop_control[0]);
close(deviceloop_control[1]);
if (udev_context)
{
udev_unref(udev_context);
udev_context = NULL;
}
return STATUS_UNSUCCESSFUL;
}
#else
NTSTATUS udev_driver_init(void)
{
return STATUS_NOT_IMPLEMENTED;
}
void udev_driver_unload( void )
{
TRACE("Stub: Unload Driver\n");
}
#endif /* HAVE_UDEV */
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