Lucene搜索返回不同的结果(Lucene search return different results)

 是的，如果您的平台上有可用的UI_GET_SYSNAME （在/usr/include/linux/uinput.h定义）（例如，由于某种原因，Android不定义它），那么您可以使用UI_GET_SYSNAME 。 它会给你一个在/sys/devices/virtual/input创建的设备的名称。 一旦你知道了sysfs中的设备，你可以通过阅读这个SO问题来找出在/dev/input创建的设备。 
 
 在调用UI_DEV_CREATE像这样使用它（省略错误/完整性检查）： 
 
ioctl(fd, UI_DEV_CREATE);

char sysfs_device_name[16];
ioctl(fd, UI_GET_SYSNAME(sizeof(sysfs_device_name)), sysfs_device_name);
printf("/sys/devices/virtual/input/%s\n", sysfs_device_name);
 
 如果它不可用，您可以尝试查找/proc/bus/input/devices的sysfs设备，该/proc/bus/input/devices应该包含如下条目： 
 
I: Bus=0006 Vendor=0001 Product=0001 Version=0001
N: Name="your-uinput-device-name"
P: Phys=
S: Sysfs=/devices/virtual/input/input12
U: Uniq=
H: Handlers=sysrq kbd mouse0 event11 
B: PROP=0
B: EV=7
B: KEY=70000 0 0 0 0 0 7ffff ffffffff fffffffe
B: REL=143
 
 ..有点混乱。 但正如您所看到的，它还将为您提供在/dev/input创建的设备的快捷方式。 

Yes, you can use UI_GET_SYSNAME (defined in /usr/include/linux/uinput.h) if it's available on your platform (Android, for instance, does not define it for some reason). It will give you a name for the device created in /sys/devices/virtual/input. Once you know the device in sysfs, you can figure out the device(s) created in /dev/input by reading this SO question.
 
Use it after calling UI_DEV_CREATE like so (omitting error/sanity checking):
 
ioctl(fd, UI_DEV_CREATE);

char sysfs_device_name[16];
ioctl(fd, UI_GET_SYSNAME(sizeof(sysfs_device_name)), sysfs_device_name);
printf("/sys/devices/virtual/input/%s\n", sysfs_device_name);
 
If it is not available, you can try looking up the sysfs device in /proc/bus/input/devices which should contain an entry like: 
 
I: Bus=0006 Vendor=0001 Product=0001 Version=0001
N: Name="your-uinput-device-name"
P: Phys=
S: Sysfs=/devices/virtual/input/input12
U: Uniq=
H: Handlers=sysrq kbd mouse0 event11 
B: PROP=0
B: EV=7
B: KEY=70000 0 0 0 0 0 7ffff ffffffff fffffffe
B: REL=143
 
..which is a bit messier. But as you can see it'll also give you a shortcut to the device created in /dev/input.