1 76193d7c 2003-09-30 devnull #include <u.h>
  2 76193d7c 2003-09-30 devnull #include <libc.h>
  3 76193d7c 2003-09-30 devnull #include <draw.h>
  4 76193d7c 2003-09-30 devnull #include <thread.h>
  5 76193d7c 2003-09-30 devnull #include <keyboard.h>
  6 76193d7c 2003-09-30 devnull 
  7 76193d7c 2003-09-30 devnull 
  8 76193d7c 2003-09-30 devnull void
  9 76193d7c 2003-09-30 devnull closekeyboard(Keyboardctl *kc)
 10 76193d7c 2003-09-30 devnull {
 11 76193d7c 2003-09-30 devnull 	if(kc == nil)
 12 76193d7c 2003-09-30 devnull 		return;
 13 76193d7c 2003-09-30 devnull 
 14 76193d7c 2003-09-30 devnull 	postnote(PNPROC, kc->pid, "kill");
 15 76193d7c 2003-09-30 devnull 
 16 76193d7c 2003-09-30 devnull #ifdef BUG
 17 76193d7c 2003-09-30 devnull 	/* Drain the channel */
 18 76193d7c 2003-09-30 devnull 	while(?kc->c)
 19 76193d7c 2003-09-30 devnull 		<-kc->c;
 20 76193d7c 2003-09-30 devnull #endif
 21 76193d7c 2003-09-30 devnull 
 22 76193d7c 2003-09-30 devnull 	close(kc->ctlfd);
 23 76193d7c 2003-09-30 devnull 	close(kc->consfd);
 24 76193d7c 2003-09-30 devnull 	free(kc->file);
 25 76193d7c 2003-09-30 devnull 	free(kc->c);
 26 76193d7c 2003-09-30 devnull 	free(kc);
 27 76193d7c 2003-09-30 devnull }
 28 76193d7c 2003-09-30 devnull 
 29 76193d7c 2003-09-30 devnull static
 30 76193d7c 2003-09-30 devnull void
 31 76193d7c 2003-09-30 devnull _ioproc(void *arg)
 32 76193d7c 2003-09-30 devnull {
 33 76193d7c 2003-09-30 devnull 	int m, n;
 34 76193d7c 2003-09-30 devnull 	char buf[20];
 35 76193d7c 2003-09-30 devnull 	Rune r;
 36 76193d7c 2003-09-30 devnull 	Keyboardctl *kc;
 37 76193d7c 2003-09-30 devnull 
 38 76193d7c 2003-09-30 devnull 	kc = arg;
 39 76193d7c 2003-09-30 devnull 	threadsetname("kbdproc");
 40 76193d7c 2003-09-30 devnull 	kc->pid = getpid();
 41 76193d7c 2003-09-30 devnull 	n = 0;
 42 76193d7c 2003-09-30 devnull 	for(;;){
 43 76193d7c 2003-09-30 devnull 		while(n>0 && fullrune(buf, n)){
 44 76193d7c 2003-09-30 devnull 			m = chartorune(&r, buf);
 45 76193d7c 2003-09-30 devnull 			n -= m;
 46 76193d7c 2003-09-30 devnull 			memmove(buf, buf+m, n);
 47 76193d7c 2003-09-30 devnull 			send(kc->c, &r);
 48 76193d7c 2003-09-30 devnull 		}
 49 76193d7c 2003-09-30 devnull 		m = read(kc->consfd, buf+n, sizeof buf-n);
 50 76193d7c 2003-09-30 devnull 		if(m <= 0){
 51 76193d7c 2003-09-30 devnull 			yield();	/* if error is due to exiting, we'll exit here */
 52 76193d7c 2003-09-30 devnull 			fprint(2, "keyboard read error: %r\n");
 53 76193d7c 2003-09-30 devnull 			threadexits("error");
 54 76193d7c 2003-09-30 devnull 		}
 55 76193d7c 2003-09-30 devnull 		n += m;
 56 76193d7c 2003-09-30 devnull 	}
 57 76193d7c 2003-09-30 devnull }
 58 76193d7c 2003-09-30 devnull 
 59 76193d7c 2003-09-30 devnull Keyboardctl*
 60 76193d7c 2003-09-30 devnull initkeyboard(char *file)
 61 76193d7c 2003-09-30 devnull {
 62 76193d7c 2003-09-30 devnull 	Keyboardctl *kc;
 63 76193d7c 2003-09-30 devnull 	char *t;
 64 76193d7c 2003-09-30 devnull 
 65 76193d7c 2003-09-30 devnull 	kc = mallocz(sizeof(Keyboardctl), 1);
 66 76193d7c 2003-09-30 devnull 	if(kc == nil)
 67 76193d7c 2003-09-30 devnull 		return nil;
 68 76193d7c 2003-09-30 devnull 	if(file == nil)
 69 76193d7c 2003-09-30 devnull 		file = "/dev/cons";
 70 76193d7c 2003-09-30 devnull 	kc->file = strdup(file);
 71 76193d7c 2003-09-30 devnull 	kc->consfd = open(file, ORDWR|OCEXEC);
 72 76193d7c 2003-09-30 devnull 	t = malloc(strlen(file)+16);
 73 76193d7c 2003-09-30 devnull 	if(kc->consfd<0 || t==nil){
 74 76193d7c 2003-09-30 devnull Error1:
 75 76193d7c 2003-09-30 devnull 		free(kc);
 76 76193d7c 2003-09-30 devnull 		return nil;
 77 76193d7c 2003-09-30 devnull 	}
 78 76193d7c 2003-09-30 devnull 	sprint(t, "%sctl", file);
 79 76193d7c 2003-09-30 devnull 	kc->ctlfd = open(t, OWRITE|OCEXEC);
 80 76193d7c 2003-09-30 devnull 	if(kc->ctlfd < 0){
 81 76193d7c 2003-09-30 devnull 		fprint(2, "initkeyboard: can't open %s: %r\n", t);
 82 76193d7c 2003-09-30 devnull Error2:
 83 76193d7c 2003-09-30 devnull 		close(kc->consfd);
 84 76193d7c 2003-09-30 devnull 		free(t);
 85 76193d7c 2003-09-30 devnull 		goto Error1;
 86 76193d7c 2003-09-30 devnull 	}
 87 76193d7c 2003-09-30 devnull 	if(ctlkeyboard(kc, "rawon") < 0){
 88 76193d7c 2003-09-30 devnull 		fprint(2, "initkeyboard: can't turn on raw mode on %s: %r\n", t);
 89 76193d7c 2003-09-30 devnull 		close(kc->ctlfd);
 90 76193d7c 2003-09-30 devnull 		goto Error2;
 91 76193d7c 2003-09-30 devnull 	}
 92 76193d7c 2003-09-30 devnull 	free(t);
 93 76193d7c 2003-09-30 devnull 	kc->c = chancreate(sizeof(Rune), 20);
 94 b20f06ab 2004-12-26 devnull 	chansetname(kc->c, "kbdc");
 95 76193d7c 2003-09-30 devnull 	proccreate(_ioproc, kc, 4096);
 96 76193d7c 2003-09-30 devnull 	return kc;
 97 76193d7c 2003-09-30 devnull }
 98 76193d7c 2003-09-30 devnull 
 99 76193d7c 2003-09-30 devnull int
100 76193d7c 2003-09-30 devnull ctlkeyboard(Keyboardctl *kc, char *m)
101 76193d7c 2003-09-30 devnull {
102 76193d7c 2003-09-30 devnull 	return write(kc->ctlfd, m, strlen(m));
103 76193d7c 2003-09-30 devnull }