8bab36af60
This is a preparatory patch for adding getkeystatus() support to the EFI console driver. We can get modifier status through the simple_text_input read_key_stroke() method, but if a non-modifier key is (also) pressed the read_key_stroke() call will consume that key from the firmware's queue. The new grub_console_read_key_stroke() helper buffers upto 1 key-stroke. If it has a non-modifier key buffered, it will return that one, if its buffer is empty, it will fills its buffer by getting a new key-stroke. If called with consume=1 it will empty its buffer after copying the key-data to the callers buffer, this is how getkey() will use it. If called with consume=0 it will keep the last key-stroke buffered, this is how getkeystatus() will call it. This means that if a non-modifier key gets pressed, repeated getkeystatus() calls will return the modifiers of that key-press until it is consumed by a getkey() call. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Javier Martinez Canillas <javierm@redhat.com> Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com> |
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| .. | ||
| arc | ||
| arm | ||
| efi | ||
| i386 | ||
| ieee1275 | ||
| uboot | ||
| xen | ||
| at_keyboard.c | ||
| gfxterm.c | ||
| gfxterm_background.c | ||
| morse.c | ||
| ns8250.c | ||
| ps2.c | ||
| serial.c | ||
| spkmodem.c | ||
| terminfo.c | ||
| tparm.c | ||
| usb_keyboard.c | ||