term% cat index.txt KBMAP(3) Library Functions Manual KBMAP(3)
NAME
kbmap - keyboard map
SYNOPSIS
bind -a #κ /dev
/dev/kbmap
DESCRIPTION
The kbmap device serves a one-level directory containing a single file,
kbmap, representing the kernel's mapping of keyboard scan codes to Uni‐
code characters (see cons(3) and keyboard(6)).
Reads return the current contents of the map. Each entry is one line
containing three 11 character numeric fields, each followed by a space:
a table number, an index into the table (scan code), and the decimal
value of the corresponding Unicode character (0 if none). The table
numbers are platform dependent; they typically distinguish between un‐
shifted and shifted keys. The scan code values are hardware dependent
and can vary from keyboard to keyboard.
Writes to the file change the map. Lines written to the file must con‐
tain three space-separated fields, representing the table number, scan
code index, and Unicode character. Values are taken to be decimal un‐
less they start with 0x (hexadecimal) or 0 (octal). The Unicode char‐
acter can also be represented as 'x where x gives the UTF-8 representa‐
tion of the character (see utf(6)), or as ^X to represent a control
character.
The Unicode character can also be Mn to represent mouse button n. The
map /sys/lib/kbmap/mouse-fn maps the F1 through F5 keys to the three
mouse buttons and the two scroll wheel buttons. Similarly, mouse-csa
maps the left Control, Start, and Alt keys to the three mouse buttons.
These maps are useful on laptops without three-button mice.
SEE ALSO
cons(3), keyboard(6), utf(6)
FILES
/sys/lib/kbmap/*
SOURCE
/sys/src/9/port/devkbmap.c
KBMAP(3)