km@cs.pitt.edu (05/03/90)
As follow up to my own question, one CAN use the keymapping ioctl functions
for special keys as well as regular keys. The following tiny program can be
used to switch two keys. Note that this works for the console and virtual
terminals only: under X windows, one can use xmodmap to accomplish the same
thing.
Ken Mitchum
km@cs.pitt.edu
#! /bin/sh
# This is a shell archive. Remove anything before this line, then unpack
# it by saving it into a file and typing "sh file". To overwrite existing
# files, type "sh file -c". You can also feed this as standard input via
# unshar, or by typing "sh <file", e.g.. If this archive is complete, you
# will see the following message at the end:
# "End of shell archive."
# Contents: kd.c
# Wrapped by km@speedy.cs.pitt.edu on Wed May 2 15:19:32 1990
PATH=/bin:/usr/bin:/usr/ucb ; export PATH
if test -f 'kd.c' -a "${1}" != "-c" ; then
echo shar: Will not clobber existing file \"'kd.c'\"
else
echo shar: Extracting \"'kd.c'\" \(1663 characters\)
sed "s/^X//" >'kd.c' <<'END_OF_FILE'
X/* kd.c
X Switch two keys by scan code.
X Usage: kd key1 key2
X To switch Caps Lock and Left Control Keys: kd 29 58
X To switch accent/tilde and Escape keys: kd 1 41
X Does not work for X windows.
X K. Mitchum km@cs.pitt.edu
X*/
X#include <sys/types.h>
X#include <stdio.h>
X#include <fcntl.h>
X#include <sys/at_ansi.h>
X#include <sys/kd.h>
X#include <sys/vt.h>
X
X
Xmain(argc,argv)
Xchar *argv[];
X{
X int error,fd, key1, key2;
X keymap_t kmap;
X struct key_t tmp;
X
X if(argc != 3) usage(argv[0]);
X if(((key1 = atoi(argv[1])) < 0 || key1 >= NUM_KEYS)
X || ((key2 = atoi(argv[2])) < 0 || key2 >= NUM_KEYS)) usage(argv[0]);
X
X if((fd = open("/dev/console",O_RDONLY)) < 0)
X perror("Error opening");
X
X printf("\nfd = %d",fd);
X if((error = ioctl(fd,GIO_KEYMAP,&kmap)) < 0)
X perror("Error getting keymap");
X
X puten(&tmp,&kmap.key[key1]);
X puten(&kmap.key[key1],&kmap.key[key2]);
X puten(&kmap.key[key2],&tmp);
X
X pentry(&(kmap.key[key1]),key1);
X pentry(&(kmap.key[key2]),key2);
X
X if((error = ioctl(fd,PIO_KEYMAP,&kmap)) < 0)
X perror("Error setting keymap");
X close(fd);
X}
X
Xputen(dest,src)
Xstruct key_t *dest,*src;
X{
X int i;
X
X for(i = 0; i < NUM_STATES; i++)
X dest->map[i] = src->map[i];
X dest->spcl = src->spcl;
X dest->flgs = src->flgs;
X}
X
Xpentry(en,n)
Xstruct key_t *en;
X{
X int i;
X printf("\nNumber %d %x",n,n);
X printf("\nStates: ");
X printf("%x ",en->map[0]);
X
X for(i = 1; i < NUM_STATES; i++)
X printf("%x ",en->map[i] );
X printf("\nSpcl %x",en->spcl);
X printf("\nFlgs %x", en->flgs);
X}
X
Xusage(pname)
Xchar *pname;
X{
X fprintf(stderr,"\nUsage: %s key1 key2",pname);
X fprintf(stderr,"\nkey1 & key2 are scancodes\n");
X exit(0);
X}
X
END_OF_FILE
if test 1663 -ne `wc -c <'kd.c'`; then
echo shar: \"'kd.c'\" unpacked with wrong size!
fi
# end of 'kd.c'
fi
echo shar: End of shell archive.
exit 0