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Sweden-Number/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
*/
#if 0
#pragma makedep unix
#endif
#include "config.h"
#include <errno.h>
#include <fcntl.h>
#include <stdarg.h>
#include <stdlib.h>
#include <stdio.h>
#include <stdint.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
#include <pthread.h>
#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 "ddk/hidsdi.h"
#include "wine/debug.h"
#include "wine/hid.h"
#include "wine/unixlib.h"
#ifdef HAS_PROPER_INPUT_HEADER
# include "hidusage.h"
#endif
#ifdef WORDS_BIGENDIAN
#define LE_DWORD(x) RtlUlongByteSwap(x)
#else
#define LE_DWORD(x) (x)
#endif
#include "unix_private.h"
WINE_DEFAULT_DEBUG_CHANNEL(plugplay);
#ifdef HAVE_UDEV
WINE_DECLARE_DEBUG_CHANNEL(hid_report);
static pthread_mutex_t udev_cs = PTHREAD_MUTEX_INITIALIZER;
static struct udev *udev_context = NULL;
static struct udev_monitor *udev_monitor;
static int deviceloop_control[2];
static struct list event_queue = LIST_INIT(event_queue);
static struct list device_list = LIST_INIT(device_list);
static struct udev_bus_options options;
struct base_device
{
struct unix_device unix_device;
void (*read_report)(struct unix_device *iface);
struct udev_device *udev_device;
int device_fd;
};
static inline struct base_device *impl_from_unix_device(struct unix_device *iface)
{
return CONTAINING_RECORD(iface, struct base_device, unix_device);
}
struct hidraw_device
{
struct base_device base;
};
static inline struct hidraw_device *hidraw_impl_from_unix_device(struct unix_device *iface)
{
return CONTAINING_RECORD(impl_from_unix_device(iface), struct hidraw_device, base);
}
#ifdef HAS_PROPER_INPUT_HEADER
#define HID_REL_MAX (REL_MISC+1)
#define HID_ABS_MAX (ABS_VOLUME+1)
struct lnxev_device
{
struct base_device base;
BYTE abs_map[HID_ABS_MAX];
BYTE rel_map[HID_REL_MAX];
BYTE hat_map[8];
BYTE button_map[KEY_MAX];
int haptic_effect_id;
int effect_ids[256];
};
static inline struct lnxev_device *lnxev_impl_from_unix_device(struct unix_device *iface)
{
return CONTAINING_RECORD(impl_from_unix_device(iface), struct lnxev_device, base);
}
#endif /* HAS_PROPER_INPUT_HEADER */
#define MAX_DEVICES 128
static int close_fds[MAX_DEVICES];
static struct pollfd poll_fds[MAX_DEVICES];
static struct base_device *poll_devs[MAX_DEVICES];
static int close_count, poll_count;
static void stop_polling_device(struct unix_device *iface)
{
struct base_device *impl = impl_from_unix_device(iface);
int i;
if (impl->device_fd == -1) return; /* already removed */
for (i = 2; i < poll_count; ++i)
if (poll_fds[i].fd == impl->device_fd) break;
if (i == poll_count)
ERR("could not find poll entry matching device %p fd\n", iface);
else
{
poll_count--;
poll_fds[i] = poll_fds[poll_count];
poll_devs[i] = poll_devs[poll_count];
close_fds[close_count++] = impl->device_fd;
impl->device_fd = -1;
}
}
static void start_polling_device(struct unix_device *iface)
{
struct base_device *impl = impl_from_unix_device(iface);
if (poll_count >= ARRAY_SIZE(poll_fds))
ERR("could not start polling device %p, too many fds\n", iface);
else
{
poll_devs[poll_count] = impl;
poll_fds[poll_count].fd = impl->device_fd;
poll_fds[poll_count].events = POLLIN;
poll_fds[poll_count].revents = 0;
poll_count++;
write(deviceloop_control[1], "u", 1);
}
}
static struct base_device *find_device_from_fd(int fd)
{
int i;
for (i = 2; i < poll_count; ++i) if (poll_fds[i].fd == fd) break;
if (i < poll_count) return poll_devs[i];
return NULL;
}
static struct base_device *find_device_from_udev(struct udev_device *dev)
{
struct base_device *impl;
LIST_FOR_EACH_ENTRY(impl, &device_list, struct base_device, unix_device.entry)
if (impl->udev_device == dev) return impl;
return NULL;
}
static void hidraw_device_destroy(struct unix_device *iface)
{
struct hidraw_device *impl = hidraw_impl_from_unix_device(iface);
udev_device_unref(impl->base.udev_device);
}
static NTSTATUS hidraw_device_start(struct unix_device *iface)
{
pthread_mutex_lock(&udev_cs);
start_polling_device(iface);
pthread_mutex_unlock(&udev_cs);
return STATUS_SUCCESS;
}
static void hidraw_device_stop(struct unix_device *iface)
{
struct hidraw_device *impl = hidraw_impl_from_unix_device(iface);
pthread_mutex_lock(&udev_cs);
stop_polling_device(iface);
list_remove(&impl->base.unix_device.entry);
pthread_mutex_unlock(&udev_cs);
}
static NTSTATUS hidraw_device_get_report_descriptor(struct unix_device *iface, BYTE *buffer,
DWORD length, DWORD *out_length)
{
#ifdef HAVE_LINUX_HIDRAW_H
struct hidraw_report_descriptor descriptor;
struct hidraw_device *impl = hidraw_impl_from_unix_device(iface);
if (ioctl(impl->base.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(impl->base.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 void hidraw_device_read_report(struct unix_device *iface)
{
struct hidraw_device *impl = hidraw_impl_from_unix_device(iface);
BYTE report_buffer[1024];
int size = read(impl->base.device_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
bus_event_queue_input_report(&event_queue, iface, report_buffer, size);
}
static void hidraw_device_set_output_report(struct unix_device *iface, HID_XFER_PACKET *packet, IO_STATUS_BLOCK *io)
{
struct hidraw_device *impl = hidraw_impl_from_unix_device(iface);
ULONG length = packet->reportBufferLen;
BYTE buffer[8192];
int count = 0;
if ((buffer[0] = packet->reportId))
count = write(impl->base.device_fd, packet->reportBuffer, length);
else if (length > sizeof(buffer) - 1)
ERR_(hid_report)("id %d length %u >= 8192, cannot write\n", packet->reportId, length);
else
{
memcpy(buffer + 1, packet->reportBuffer, length);
count = write(impl->base.device_fd, buffer, length + 1);
}
if (count > 0)
{
io->Information = count;
io->Status = STATUS_SUCCESS;
}
else
{
ERR_(hid_report)("id %d write failed error: %d %s\n", packet->reportId, errno, strerror(errno));
io->Information = 0;
io->Status = STATUS_UNSUCCESSFUL;
}
}
static void hidraw_device_get_feature_report(struct unix_device *iface, HID_XFER_PACKET *packet,
IO_STATUS_BLOCK *io)
{
#if defined(HAVE_LINUX_HIDRAW_H) && defined(HIDIOCGFEATURE)
struct hidraw_device *impl = hidraw_impl_from_unix_device(iface);
ULONG length = packet->reportBufferLen;
BYTE buffer[8192];
int count = 0;
if ((buffer[0] = packet->reportId) && length <= 0x1fff)
count = ioctl(impl->base.device_fd, HIDIOCGFEATURE(length), packet->reportBuffer);
else if (length > sizeof(buffer) - 1)
ERR_(hid_report)("id %d length %u >= 8192, cannot read\n", packet->reportId, length);
else
{
count = ioctl(impl->base.device_fd, HIDIOCGFEATURE(length + 1), buffer);
memcpy(packet->reportBuffer, buffer + 1, length);
}
if (count > 0)
{
io->Information = count;
io->Status = STATUS_SUCCESS;
}
else
{
ERR_(hid_report)("id %d read failed, error: %d %s\n", packet->reportId, errno, strerror(errno));
io->Information = 0;
io->Status = STATUS_UNSUCCESSFUL;
}
#else
io->Information = 0;
io->Status = STATUS_NOT_IMPLEMENTED;
#endif
}
static void hidraw_device_set_feature_report(struct unix_device *iface, HID_XFER_PACKET *packet,
IO_STATUS_BLOCK *io)
{
#if defined(HAVE_LINUX_HIDRAW_H) && defined(HIDIOCSFEATURE)
struct hidraw_device *impl = hidraw_impl_from_unix_device(iface);
ULONG length = packet->reportBufferLen;
BYTE buffer[8192];
int count = 0;
if ((buffer[0] = packet->reportId) && length <= 0x1fff)
count = ioctl(impl->base.device_fd, HIDIOCSFEATURE(length), packet->reportBuffer);
else if (length > sizeof(buffer) - 1)
ERR_(hid_report)("id %d length %u >= 8192, cannot write\n", packet->reportId, length);
else
{
memcpy(buffer + 1, packet->reportBuffer, length);
count = ioctl(impl->base.device_fd, HIDIOCSFEATURE(length + 1), buffer);
}
if (count > 0)
{
io->Information = count;
io->Status = STATUS_SUCCESS;
}
else
{
ERR_(hid_report)("id %d write failed, error: %d %s\n", packet->reportId, errno, strerror(errno));
io->Information = 0;
io->Status = STATUS_UNSUCCESSFUL;
}
#else
io->Information = 0;
io->Status = STATUS_NOT_IMPLEMENTED;
#endif
}
static const struct raw_device_vtbl hidraw_device_vtbl =
{
hidraw_device_destroy,
hidraw_device_start,
hidraw_device_stop,
hidraw_device_get_report_descriptor,
hidraw_device_set_output_report,
hidraw_device_get_feature_report,
hidraw_device_set_feature_report,
};
#ifdef HAS_PROPER_INPUT_HEADER
static const char *get_device_syspath(struct udev_device *dev)
{
struct udev_device *parent;
if ((parent = udev_device_get_parent_with_subsystem_devtype(dev, "hid", NULL)))
return udev_device_get_syspath(parent);
if ((parent = udev_device_get_parent_with_subsystem_devtype(dev, "usb", "usb_device")))
return udev_device_get_syspath(parent);
return "";
}
static struct base_device *find_device_from_syspath(const char *path)
{
struct base_device *impl;
LIST_FOR_EACH_ENTRY(impl, &device_list, struct base_device, unix_device.entry)
if (!strcmp(get_device_syspath(impl->udev_device), path)) return impl;
return NULL;
}
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},
{0,0},
{0,0},
{0,0},
{0,0},
{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*/
};
C_ASSERT(ARRAY_SIZE(ABS_TO_HID_MAP) == HID_ABS_MAX);
#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 TOP_REL_PAGE (HID_USAGE_PAGE_CONSUMER+1)
#define test_bit(arr,bit) (((BYTE*)(arr))[(bit)>>3]&(1<<((bit)&7)))
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 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 NTSTATUS build_report_descriptor(struct unix_device *iface, struct udev_device *dev)
{
struct input_absinfo abs_info[HID_ABS_MAX];
BYTE absbits[(ABS_MAX+7)/8];
BYTE relbits[(REL_MAX+7)/8];
BYTE ffbits[(FF_MAX+7)/8];
struct ff_effect effect;
USAGE_AND_PAGE usage;
USHORT count = 0;
USAGE usages[16];
INT i, button_count, abs_count, rel_count, hat_count;
const BYTE *device_usage = what_am_I(dev);
struct lnxev_device *impl = lnxev_impl_from_unix_device(iface);
if (ioctl(impl->base.device_fd, EVIOCGBIT(EV_REL, sizeof(relbits)), relbits) == -1)
{
WARN("ioctl(EVIOCGBIT, EV_REL) failed: %d %s\n", errno, strerror(errno));
memset(relbits, 0, sizeof(relbits));
}
if (ioctl(impl->base.device_fd, EVIOCGBIT(EV_ABS, sizeof(absbits)), absbits) == -1)
{
WARN("ioctl(EVIOCGBIT, EV_ABS) failed: %d %s\n", errno, strerror(errno));
memset(absbits, 0, sizeof(absbits));
}
if (ioctl(impl->base.device_fd, EVIOCGBIT(EV_FF, sizeof(ffbits)), ffbits) == -1)
{
WARN("ioctl(EVIOCGBIT, EV_FF) failed: %d %s\n", errno, strerror(errno));
memset(ffbits, 0, sizeof(ffbits));
}
if (!hid_device_begin_report_descriptor(iface, device_usage[0], device_usage[1]))
return STATUS_NO_MEMORY;
if (!hid_device_begin_input_report(iface))
return STATUS_NO_MEMORY;
abs_count = 0;
for (i = 0; i < HID_ABS_MAX; i++)
{
if (!test_bit(absbits, i)) continue;
ioctl(impl->base.device_fd, EVIOCGABS(i), abs_info + i);
if (!(usage.UsagePage = ABS_TO_HID_MAP[i][0])) continue;
if (!(usage.Usage = ABS_TO_HID_MAP[i][1])) continue;
if (!hid_device_add_axes(iface, 1, usage.UsagePage, &usage.Usage, FALSE,
LE_DWORD(abs_info[i].minimum), LE_DWORD(abs_info[i].maximum)))
return STATUS_NO_MEMORY;
impl->abs_map[i] = abs_count++;
}
rel_count = 0;
for (i = 0; i < HID_REL_MAX; i++)
{
if (!test_bit(relbits, i)) continue;
if (!(usage.UsagePage = REL_TO_HID_MAP[i][0])) continue;
if (!(usage.Usage = REL_TO_HID_MAP[i][1])) continue;
if (!hid_device_add_axes(iface, 1, usage.UsagePage, &usage.Usage, TRUE,
INT32_MIN, INT32_MAX))
return STATUS_NO_MEMORY;
impl->rel_map[i] = rel_count++;
}
hat_count = 0;
for (i = ABS_HAT0X; i <= ABS_HAT3X; i += 2)
{
if (!test_bit(absbits, i)) continue;
impl->hat_map[i - ABS_HAT0X] = hat_count;
impl->hat_map[i - ABS_HAT0X + 1] = hat_count++;
}
if (hat_count && !hid_device_add_hatswitch(iface, hat_count))
return STATUS_NO_MEMORY;
/* For now lump all buttons just into incremental usages, Ignore Keys */
button_count = count_buttons(impl->base.device_fd, impl->button_map);
if (button_count && !hid_device_add_buttons(iface, HID_USAGE_PAGE_BUTTON, 1, button_count))
return STATUS_NO_MEMORY;
if (!hid_device_end_input_report(iface))
return STATUS_NO_MEMORY;
impl->haptic_effect_id = -1;
for (i = 0; i < ARRAY_SIZE(impl->effect_ids); ++i) impl->effect_ids[i] = -1;
if (test_bit(ffbits, FF_RUMBLE))
{
effect.id = -1;
effect.type = FF_RUMBLE;
effect.replay.length = 0;
effect.u.rumble.strong_magnitude = 0;
effect.u.rumble.weak_magnitude = 0;
if (ioctl(impl->base.device_fd, EVIOCSFF, &effect) == -1)
WARN("couldn't allocate rumble effect for haptics: %d %s\n", errno, strerror(errno));
else if (!hid_device_add_haptics(iface))
return FALSE;
else
impl->haptic_effect_id = effect.id;
}
for (i = 0; i < FF_MAX; ++i) if (test_bit(ffbits, i)) break;
if (i != FF_MAX)
{
if (test_bit(ffbits, FF_SINE)) usages[count++] = PID_USAGE_ET_SINE;
if (test_bit(ffbits, FF_SQUARE)) usages[count++] = PID_USAGE_ET_SQUARE;
if (test_bit(ffbits, FF_TRIANGLE)) usages[count++] = PID_USAGE_ET_TRIANGLE;
if (test_bit(ffbits, FF_SAW_UP)) usages[count++] = PID_USAGE_ET_SAWTOOTH_UP;
if (test_bit(ffbits, FF_SAW_DOWN)) usages[count++] = PID_USAGE_ET_SAWTOOTH_DOWN;
if (!hid_device_add_physical(iface, usages, count))
return STATUS_NO_MEMORY;
}
if (!hid_device_end_report_descriptor(iface))
return STATUS_NO_MEMORY;
/* Initialize axis in the report */
for (i = 0; i < HID_ABS_MAX; i++)
{
if (!test_bit(absbits, i)) continue;
if (i < ABS_HAT0X || i > ABS_HAT3Y)
hid_device_set_abs_axis(iface, impl->abs_map[i], abs_info[i].value);
else if ((i - ABS_HAT0X) % 2)
hid_device_set_hatswitch_y(iface, impl->hat_map[i - ABS_HAT0X], abs_info[i].value);
else
hid_device_set_hatswitch_x(iface, impl->hat_map[i - ABS_HAT0X], abs_info[i].value);
}
return STATUS_SUCCESS;
}
static BOOL set_report_from_event(struct unix_device *iface, struct input_event *ie)
{
struct lnxev_device *impl = lnxev_impl_from_unix_device(iface);
switch (ie->type)
{
#ifdef EV_SYN
case EV_SYN:
switch (ie->code)
{
case SYN_REPORT: return hid_device_sync_report(iface);
case SYN_DROPPED: hid_device_drop_report(iface); break;
}
return FALSE;
#endif
#ifdef EV_MSC
case EV_MSC:
return FALSE;
#endif
case EV_KEY:
hid_device_set_button(iface, impl->button_map[ie->code], ie->value);
return FALSE;
case EV_ABS:
if (ie->code < ABS_HAT0X || ie->code > ABS_HAT3Y)
hid_device_set_abs_axis(iface, impl->abs_map[ie->code], ie->value);
else if ((ie->code - ABS_HAT0X) % 2)
hid_device_set_hatswitch_y(iface, impl->hat_map[ie->code - ABS_HAT0X], ie->value);
else
hid_device_set_hatswitch_x(iface, impl->hat_map[ie->code - ABS_HAT0X], ie->value);
return FALSE;
case EV_REL:
hid_device_set_rel_axis(iface, impl->rel_map[ie->code], ie->value);
return FALSE;
default:
ERR("TODO: Process Report (%i, %i)\n",ie->type, ie->code);
return FALSE;
}
}
static void lnxev_device_destroy(struct unix_device *iface)
{
struct lnxev_device *impl = lnxev_impl_from_unix_device(iface);
udev_device_unref(impl->base.udev_device);
}
static NTSTATUS lnxev_device_start(struct unix_device *iface)
{
struct lnxev_device *impl = lnxev_impl_from_unix_device(iface);
NTSTATUS status;
if ((status = build_report_descriptor(iface, impl->base.udev_device)))
return status;
pthread_mutex_lock(&udev_cs);
start_polling_device(iface);
pthread_mutex_unlock(&udev_cs);
return STATUS_SUCCESS;
}
static void lnxev_device_stop(struct unix_device *iface)
{
struct lnxev_device *impl = lnxev_impl_from_unix_device(iface);
pthread_mutex_lock(&udev_cs);
stop_polling_device(iface);
list_remove(&impl->base.unix_device.entry);
pthread_mutex_unlock(&udev_cs);
}
static void lnxev_device_read_report(struct unix_device *iface)
{
struct hid_device_state *state = &iface->hid_device_state;
struct lnxev_device *impl = lnxev_impl_from_unix_device(iface);
struct input_event ie;
int size;
size = read(impl->base.device_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(iface, &ie))
bus_event_queue_input_report(&event_queue, iface, state->report_buf, state->report_len);
}
static NTSTATUS lnxev_device_haptics_start(struct unix_device *iface, DWORD duration_ms,
USHORT rumble_intensity, USHORT buzz_intensity)
{
struct lnxev_device *impl = lnxev_impl_from_unix_device(iface);
struct ff_effect effect =
{
.id = impl->haptic_effect_id,
.type = FF_RUMBLE,
};
struct input_event event;
TRACE("iface %p, duration_ms %u, rumble_intensity %u, buzz_intensity %u stub!\n", iface,
duration_ms, rumble_intensity, buzz_intensity);
effect.replay.length = duration_ms;
effect.u.rumble.strong_magnitude = rumble_intensity;
effect.u.rumble.weak_magnitude = buzz_intensity;
if (ioctl(impl->base.device_fd, EVIOCSFF, &effect) == -1)
{
effect.id = -1;
if (ioctl(impl->base.device_fd, EVIOCSFF, &effect) == 1)
{
WARN("couldn't re-allocate rumble effect for haptics: %d %s\n", errno, strerror(errno));
return STATUS_UNSUCCESSFUL;
}
impl->haptic_effect_id = effect.id;
}
event.type = EV_FF;
event.code = effect.id;
event.value = 1;
if (write(impl->base.device_fd, &event, sizeof(event)) == -1)
{
WARN("couldn't start haptics rumble effect: %d %s\n", errno, strerror(errno));
return STATUS_UNSUCCESSFUL;
}
return STATUS_SUCCESS;
}
static NTSTATUS lnxev_device_physical_effect_run(struct lnxev_device *impl, BYTE index,
int iterations)
{
struct input_event ie =
{
.type = EV_FF,
.value = iterations,
};
if (impl->effect_ids[index] < 0) return STATUS_UNSUCCESSFUL;
ie.code = impl->effect_ids[index];
if (write(impl->base.device_fd, &ie, sizeof(ie)) == -1)
{
WARN("couldn't stop effect, write failed %d %s\n", errno, strerror(errno));
return STATUS_UNSUCCESSFUL;
}
return STATUS_SUCCESS;
}
static NTSTATUS lnxev_device_physical_device_control(struct unix_device *iface, USAGE control)
{
struct lnxev_device *impl = lnxev_impl_from_unix_device(iface);
unsigned int i;
TRACE("iface %p, control %#04x.\n", iface, control);
switch (control)
{
case PID_USAGE_DC_ENABLE_ACTUATORS:
{
struct input_event ie =
{
.type = EV_FF,
.code = FF_GAIN,
.value = 0xffff,
};
if (write(impl->base.device_fd, &ie, sizeof(ie)) == -1)
WARN("write failed %d %s\n", errno, strerror(errno));
return STATUS_SUCCESS;
}
case PID_USAGE_DC_DISABLE_ACTUATORS:
{
struct input_event ie =
{
.type = EV_FF,
.code = FF_GAIN,
.value = 0,
};
if (write(impl->base.device_fd, &ie, sizeof(ie)) == -1)
WARN("write failed %d %s\n", errno, strerror(errno));
return STATUS_SUCCESS;
}
case PID_USAGE_DC_STOP_ALL_EFFECTS:
for (i = 0; i < ARRAY_SIZE(impl->effect_ids); ++i)
{
if (impl->effect_ids[i] < 0) continue;
lnxev_device_physical_effect_run(impl, i, 0);
}
return STATUS_SUCCESS;
case PID_USAGE_DC_DEVICE_RESET:
for (i = 0; i < ARRAY_SIZE(impl->effect_ids); ++i)
{
if (impl->effect_ids[i] < 0) continue;
if (ioctl(impl->base.device_fd, EVIOCRMFF, impl->effect_ids[i]) == -1)
WARN("couldn't free effect, EVIOCRMFF ioctl failed: %d %s\n", errno, strerror(errno));
impl->effect_ids[i] = -1;
}
return STATUS_SUCCESS;
case PID_USAGE_DC_DEVICE_PAUSE:
WARN("device pause not supported\n");
return STATUS_NOT_SUPPORTED;
case PID_USAGE_DC_DEVICE_CONTINUE:
WARN("device continue not supported\n");
return STATUS_NOT_SUPPORTED;
}
return STATUS_NOT_SUPPORTED;
}
static NTSTATUS lnxev_device_physical_effect_control(struct unix_device *iface, BYTE index,
USAGE control, BYTE iterations)
{
struct lnxev_device *impl = lnxev_impl_from_unix_device(iface);
NTSTATUS status;
TRACE("iface %p, index %u, control %04x, iterations %u.\n", iface, index, control, iterations);
switch (control)
{
case PID_USAGE_OP_EFFECT_START_SOLO:
if ((status = lnxev_device_physical_device_control(iface, PID_USAGE_DC_STOP_ALL_EFFECTS)))
return status;
/* fallthrough */
case PID_USAGE_OP_EFFECT_START:
return lnxev_device_physical_effect_run(impl, index, iterations);
case PID_USAGE_OP_EFFECT_STOP:
return lnxev_device_physical_effect_run(impl, index, 0);
}
return STATUS_SUCCESS;
}
static NTSTATUS set_effect_type_from_usage(struct ff_effect *effect, USAGE type)
{
switch (type)
{
case PID_USAGE_ET_SINE:
effect->type = FF_PERIODIC;
effect->u.periodic.waveform = FF_SINE;
return STATUS_SUCCESS;
case PID_USAGE_ET_SQUARE:
effect->type = FF_PERIODIC;
effect->u.periodic.waveform = FF_SQUARE;
return STATUS_SUCCESS;
case PID_USAGE_ET_TRIANGLE:
effect->type = FF_PERIODIC;
effect->u.periodic.waveform = FF_TRIANGLE;
return STATUS_SUCCESS;
case PID_USAGE_ET_SAWTOOTH_UP:
effect->type = FF_PERIODIC;
effect->u.periodic.waveform = FF_SAW_UP;
return STATUS_SUCCESS;
case PID_USAGE_ET_SAWTOOTH_DOWN:
effect->type = FF_PERIODIC;
effect->u.periodic.waveform = FF_SAW_DOWN;
return STATUS_SUCCESS;
case PID_USAGE_ET_SPRING:
effect->type = FF_SPRING;
return STATUS_SUCCESS;
case PID_USAGE_ET_DAMPER:
effect->type = FF_DAMPER;
return STATUS_SUCCESS;
case PID_USAGE_ET_INERTIA:
effect->type = FF_INERTIA;
return STATUS_SUCCESS;
case PID_USAGE_ET_FRICTION:
effect->type = FF_FRICTION;
return STATUS_SUCCESS;
case PID_USAGE_ET_CONSTANT_FORCE:
effect->type = FF_CONSTANT;
return STATUS_SUCCESS;
case PID_USAGE_ET_RAMP:
effect->type = FF_RAMP;
return STATUS_SUCCESS;
case PID_USAGE_ET_CUSTOM_FORCE_DATA:
effect->type = FF_CUSTOM;
return STATUS_SUCCESS;
default:
return STATUS_NOT_SUPPORTED;
}
}
static NTSTATUS lnxev_device_physical_effect_update(struct unix_device *iface, BYTE index,
struct effect_params *params)
{
struct lnxev_device *impl = lnxev_impl_from_unix_device(iface);
struct ff_effect effect = {.id = impl->effect_ids[index]};
NTSTATUS status;
TRACE("iface %p, index %u, params %p.\n", iface, index, params);
if ((status = set_effect_type_from_usage(&effect, params->effect_type))) return status;
effect.replay.length = params->duration;
effect.replay.delay = params->start_delay;
effect.trigger.button = params->trigger_button;
effect.trigger.interval = params->trigger_repeat_interval;
/* only supports polar with one direction angle */
effect.direction = params->direction[0] * 256;
switch (params->effect_type)
{
case PID_USAGE_ET_SINE:
case PID_USAGE_ET_SQUARE:
case PID_USAGE_ET_TRIANGLE:
case PID_USAGE_ET_SAWTOOTH_UP:
case PID_USAGE_ET_SAWTOOTH_DOWN:
FIXME("periodic effect semi-stub!");
break;
case PID_USAGE_ET_SPRING:
case PID_USAGE_ET_DAMPER:
case PID_USAGE_ET_INERTIA:
case PID_USAGE_ET_FRICTION:
FIXME("not implemented!");
break;
case PID_USAGE_ET_CONSTANT_FORCE:
FIXME("not implemented!");
break;
case PID_USAGE_ET_RAMP:
FIXME("not implemented!");
break;
case PID_USAGE_ET_CUSTOM_FORCE_DATA:
FIXME("not implemented!");
break;
}
if (ioctl(impl->base.device_fd, EVIOCSFF, &effect) != -1)
impl->effect_ids[index] = effect.id;
else
{
WARN("couldn't create effect, EVIOCSFF ioctl failed: %d %s\n", errno, strerror(errno));
return STATUS_UNSUCCESSFUL;
}
return STATUS_SUCCESS;
}
static const struct hid_device_vtbl lnxev_device_vtbl =
{
lnxev_device_destroy,
lnxev_device_start,
lnxev_device_stop,
lnxev_device_haptics_start,
lnxev_device_physical_device_control,
lnxev_device_physical_effect_control,
lnxev_device_physical_effect_update,
};
#endif /* HAS_PROPER_INPUT_HEADER */
static void get_device_subsystem_info(struct udev_device *dev, char const *subsystem, struct device_desc *desc)
{
struct udev_device *parent = NULL;
const char *ptr, *next, *tmp;
DWORD bus = 0;
if (!(parent = udev_device_get_parent_with_subsystem_devtype(dev, subsystem, NULL))) return;
if ((next = udev_device_get_sysattr_value(parent, "uevent")))
{
while ((ptr = next) && *ptr)
{
if ((next = strchr(next, '\n'))) next += 1;
else next = ptr + strlen(ptr);
TRACE("%s uevent %s\n", subsystem, debugstr_an(ptr, next - ptr - 1));
if (!strncmp(ptr, "HID_UNIQ=", 9))
{
char buffer[MAX_PATH];
if (desc->serialnumber[0]) continue;
if (sscanf(ptr, "HID_UNIQ=%256s\n", buffer) == 1)
ntdll_umbstowcs(buffer, strlen(buffer) + 1, desc->serialnumber, ARRAY_SIZE(desc->serialnumber));
}
if (!strncmp(ptr, "HID_PHYS=", 9) || !strncmp(ptr, "PHYS=\"", 6))
{
if (!(tmp = strstr(ptr, "/input")) || tmp >= next) continue;
if (desc->input == -1) sscanf(tmp, "/input%d\n", &desc->input);
}
if (!strncmp(ptr, "HID_ID=", 7))
{
if (bus || desc->vid || desc->pid) continue;
sscanf(ptr, "HID_ID=%x:%x:%x\n", &bus, &desc->vid, &desc->pid);
}
if (!strncmp(ptr, "PRODUCT=", 8))
{
if (desc->version) continue;
if (!strcmp(subsystem, "usb"))
sscanf(ptr, "PRODUCT=%x/%x/%x\n", &desc->vid, &desc->pid, &desc->version);
else
sscanf(ptr, "PRODUCT=%x/%x/%x/%x\n", &bus, &desc->vid, &desc->pid, &desc->version);
}
}
}
if (!desc->manufacturer[0] && (tmp = udev_device_get_sysattr_value(dev, "manufacturer")))
ntdll_umbstowcs(tmp, strlen(tmp) + 1, desc->manufacturer, ARRAY_SIZE(desc->manufacturer));
if (!desc->product[0] && (tmp = udev_device_get_sysattr_value(dev, "product")))
ntdll_umbstowcs(tmp, strlen(tmp) + 1, desc->product, ARRAY_SIZE(desc->product));
if (!desc->serialnumber[0] && (tmp = udev_device_get_sysattr_value(dev, "serial")))
ntdll_umbstowcs(tmp, strlen(tmp) + 1, desc->serialnumber, ARRAY_SIZE(desc->serialnumber));
}
static void udev_add_device(struct udev_device *dev)
{
struct device_desc desc =
{
.input = -1,
};
struct base_device *impl;
const char *subsystem;
const char *devnode;
int fd;
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;
}
TRACE("udev %s syspath %s\n", debugstr_a(devnode), udev_device_get_syspath(dev));
#ifdef HAS_PROPER_INPUT_HEADER
if ((impl = find_device_from_syspath(get_device_syspath(dev))))
{
TRACE("duplicate device found, not adding the new one\n");
close(fd);
return;
}
#endif
get_device_subsystem_info(dev, "hid", &desc);
get_device_subsystem_info(dev, "input", &desc);
get_device_subsystem_info(dev, "usb", &desc);
subsystem = udev_device_get_subsystem(dev);
if (!strcmp(subsystem, "hidraw"))
{
static const WCHAR hidraw[] = {'h','i','d','r','a','w',0};
char product[MAX_PATH];
if (!desc.manufacturer[0]) memcpy(desc.manufacturer, hidraw, sizeof(hidraw));
#ifdef HAVE_LINUX_HIDRAW_H
if (!desc.product[0] && ioctl(fd, HIDIOCGRAWNAME(sizeof(product) - 1), product) >= 0)
ntdll_umbstowcs(product, strlen(product) + 1, desc.product, ARRAY_SIZE(desc.product));
#endif
}
#ifdef HAS_PROPER_INPUT_HEADER
else if (!strcmp(subsystem, "input"))
{
static const WCHAR evdev[] = {'e','v','d','e','v',0};
struct input_id device_id = {0};
char buffer[MAX_PATH];
if (ioctl(fd, EVIOCGID, &device_id) < 0)
WARN("ioctl(EVIOCGID) failed: %d %s\n", errno, strerror(errno));
else
{
desc.vid = device_id.vendor;
desc.pid = device_id.product;
desc.version = device_id.version;
}
if (!desc.manufacturer[0]) memcpy(desc.manufacturer, evdev, sizeof(evdev));
if (!desc.product[0] && ioctl(fd, EVIOCGNAME(sizeof(buffer) - 1), buffer) > 0)
ntdll_umbstowcs(buffer, strlen(buffer) + 1, desc.product, ARRAY_SIZE(desc.product));
if (!desc.serialnumber[0] && ioctl(fd, EVIOCGUNIQ(sizeof(buffer)), buffer) >= 0)
ntdll_umbstowcs(buffer, strlen(buffer) + 1, desc.serialnumber, ARRAY_SIZE(desc.serialnumber));
}
#endif
if (!desc.serialnumber[0])
{
static const WCHAR zeros[] = {'0','0','0','0',0};
memcpy(desc.serialnumber, zeros, sizeof(zeros));
}
if (is_xbox_gamepad(desc.vid, desc.pid))
desc.is_gamepad = TRUE;
#ifdef HAS_PROPER_INPUT_HEADER
else
{
int axes=0, buttons=0;
axes = count_abs_axis(fd);
buttons = count_buttons(fd, NULL);
desc.is_gamepad = (axes == 6 && buttons >= 14);
}
#endif
TRACE("dev %p, node %s, desc %s.\n", dev, debugstr_a(devnode), debugstr_device_desc(&desc));
if (strcmp(subsystem, "hidraw") == 0)
{
if (!(impl = raw_device_create(&hidraw_device_vtbl, sizeof(struct hidraw_device)))) return;
list_add_tail(&device_list, &impl->unix_device.entry);
impl->read_report = hidraw_device_read_report;
impl->udev_device = udev_device_ref(dev);
impl->device_fd = fd;
bus_event_queue_device_created(&event_queue, &impl->unix_device, &desc);
}
#ifdef HAS_PROPER_INPUT_HEADER
else if (strcmp(subsystem, "input") == 0)
{
if (!(impl = hid_device_create(&lnxev_device_vtbl, sizeof(struct lnxev_device)))) return;
list_add_tail(&device_list, &impl->unix_device.entry);
impl->read_report = lnxev_device_read_report;
impl->udev_device = udev_device_ref(dev);
impl->device_fd = fd;
bus_event_queue_device_created(&event_queue, &impl->unix_device, &desc);
}
#endif
}
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 (!options.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 (!options.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)))
{
udev_add_device(dev);
udev_device_unref(dev);
}
}
udev_enumerate_unref(enumerate);
}
static struct udev_monitor *create_monitor(int *fd)
{
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 (!options.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 (!options.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 ((*fd = udev_monitor_get_fd(monitor)) >= 0)
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 base_device *impl;
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)
udev_add_device(dev);
else if (strcmp(action, "remove") == 0)
{
impl = find_device_from_udev(dev);
if (impl) bus_event_queue_device_removed(&event_queue, &impl->unix_device);
else WARN("failed to find device for udev device %p\n", dev);
}
else
WARN("Unhandled action %s\n", debugstr_a(action));
udev_device_unref(dev);
}
NTSTATUS udev_bus_init(void *args)
{
int monitor_fd;
TRACE("args %p\n", args);
options = *(struct udev_bus_options *)args;
if (pipe(deviceloop_control) != 0)
{
ERR("UDEV control pipe creation failed\n");
return STATUS_UNSUCCESSFUL;
}
if (!(udev_context = udev_new()))
{
ERR("UDEV object creation failed\n");
goto error;
}
if (!(udev_monitor = create_monitor(&monitor_fd)))
{
ERR("UDEV monitor creation failed\n");
goto error;
}
poll_fds[0].fd = monitor_fd;
poll_fds[0].events = POLLIN;
poll_fds[0].revents = 0;
poll_fds[1].fd = deviceloop_control[0];
poll_fds[1].events = POLLIN;
poll_fds[1].revents = 0;
poll_count = 2;
build_initial_deviceset();
return STATUS_SUCCESS;
error:
if (udev_context) udev_unref(udev_context);
udev_context = NULL;
close(deviceloop_control[0]);
close(deviceloop_control[1]);
return STATUS_UNSUCCESSFUL;
}
NTSTATUS udev_bus_wait(void *args)
{
struct bus_event *result = args;
struct pollfd pfd[MAX_DEVICES];
struct base_device *impl;
char ctrl = 0;
int i, count;
/* cleanup previously returned event */
bus_event_cleanup(result);
while (ctrl != 'q')
{
if (bus_event_queue_pop(&event_queue, result)) return STATUS_PENDING;
pthread_mutex_lock(&udev_cs);
while (close_count--) close(close_fds[close_count]);
memcpy(pfd, poll_fds, poll_count * sizeof(*pfd));
count = poll_count;
close_count = 0;
pthread_mutex_unlock(&udev_cs);
while (poll(pfd, count, -1) <= 0) {}
pthread_mutex_lock(&udev_cs);
if (pfd[0].revents) process_monitor_event(udev_monitor);
if (pfd[1].revents) read(deviceloop_control[0], &ctrl, 1);
for (i = 2; i < count; ++i)
{
if (!pfd[i].revents) continue;
impl = find_device_from_fd(pfd[i].fd);
if (impl) impl->read_report(&impl->unix_device);
}
pthread_mutex_unlock(&udev_cs);
}
TRACE("UDEV main loop exiting\n");
bus_event_queue_destroy(&event_queue);
udev_monitor_unref(udev_monitor);
udev_unref(udev_context);
udev_context = NULL;
close(deviceloop_control[0]);
close(deviceloop_control[1]);
return STATUS_SUCCESS;
}
NTSTATUS udev_bus_stop(void *args)
{
if (!udev_context) return STATUS_SUCCESS;
write(deviceloop_control[1], "q", 1);
return STATUS_SUCCESS;
}
#else
NTSTATUS udev_bus_init(void *args)
{
WARN("UDEV support not compiled in!\n");
return STATUS_NOT_IMPLEMENTED;
}
NTSTATUS udev_bus_wait(void *args)
{
WARN("UDEV support not compiled in!\n");
return STATUS_NOT_IMPLEMENTED;
}
NTSTATUS udev_bus_stop(void *args)
{
WARN("UDEV support not compiled in!\n");
return STATUS_NOT_IMPLEMENTED;
}
#endif /* HAVE_UDEV */
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