===================================================================
RCS file: /cvsrepo/anoncvs/cvs/src/usr.bin/sndiod/fdpass.c,v
retrieving revision 1.8
retrieving revision 1.9
diff -c -r1.8 -r1.9
*** src/usr.bin/sndiod/fdpass.c	2020/01/23 05:40:09	1.8
--- src/usr.bin/sndiod/fdpass.c	2020/02/26 13:53:58	1.9
***************
*** 1,4 ****
! /*	$OpenBSD: fdpass.c,v 1.8 2020/01/23 05:40:09 ratchov Exp $	*/
  /*
   * Copyright (c) 2015 Alexandre Ratchov <alex@caoua.org>
   *
--- 1,4 ----
! /*	$OpenBSD: fdpass.c,v 1.9 2020/02/26 13:53:58 ratchov Exp $	*/
  /*
   * Copyright (c) 2015 Alexandre Ratchov <alex@caoua.org>
   *
***************
*** 32,37 ****
--- 32,38 ----
  struct fdpass_msg {
  #define FDPASS_OPEN_SND		0	/* open an audio device */
  #define FDPASS_OPEN_MIDI	1	/* open a midi port */
+ #define FDPASS_OPEN_CTL		2	/* open an audio control device */
  #define FDPASS_RETURN		3	/* return after above commands */
  	unsigned int cmd;		/* one of above */
  	unsigned int num;		/* audio device or midi port number */
***************
*** 287,292 ****
--- 288,309 ----
  	return mio_rmidi_fdopen(fd, mode, 1);
  }
  
+ struct sioctl_hdl *
+ fdpass_sioctl_open(int num, int idx, unsigned int mode)
+ {
+ 	int fd;
+ 
+ 	if (fdpass_peer == NULL)
+ 		return NULL;
+ 	if (!fdpass_send(fdpass_peer, FDPASS_OPEN_CTL, num, idx, mode, -1))
+ 		return NULL;
+ 	if (!fdpass_waitret(fdpass_peer, &fd))
+ 		return NULL;
+ 	if (fd < 0)
+ 		return NULL;
+ 	return sioctl_sun_fdopen(fd, mode, 1);
+ }
+ 
  void
  fdpass_in_worker(void *arg)
  {
***************
*** 345,350 ****
--- 362,384 ----
  			return;
  		}
  		fd = mio_rmidi_getfd(path, mode, 1);
+ 		break;
+ 	case FDPASS_OPEN_CTL:
+ 		d = dev_bynum(num);
+ 		if (d == NULL || !(mode & (SIOCTL_READ | SIOCTL_WRITE))) {
+ 			if (log_level >= 1) {
+ 				fdpass_log(f);
+ 				log_puts(": bad audio control device\n");
+ 			}
+ 			fdpass_close(f);
+ 			return;
+ 		}
+ 		path = namelist_byindex(&d->path_list, idx);
+ 		if (path == NULL) {
+ 			fdpass_close(f);
+ 			return;
+ 		}
+ 		fd = sioctl_sun_getfd(path, mode, 1);
  		break;
  	default:
  		fdpass_close(f);