>Number:         6275
>Category:       kern
>Synopsis:       minor /dev/audio incompatibility
>Confidential:   no
>Severity:       non-critical
>Priority:       medium
>Responsible:    kern-bug-people (Kernel Bug People)
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sun Oct 11 19:05:00 1998
>Last-Modified:
>Originator:     Darrin B. Jewell
>Organization:
unorganized
	
>Release:        -current, updated ~19981010.0643 EDT
>Environment:
	
System: NetBSD pan-fried-peking-ravioli 1.3H NetBSD 1.3H (PAN-FRIED-PEKING-RAVIOLI) #1: Sun Oct 11 16:27:17 EDT 1998 jewell@pan-fried-peking-ravioli:/u1/PAN-FRIED-PEKING-RAVIOLI i386


>Description:
        I observe that if I use the AUDIO_SETINFO ioctl with
a structure returned from an AUDIO_GETINFO ioctl, I get EINVAL.

Although the man page recommends using the AUDIO_INITINFO()
structure instead, some programs expect sun compatibility.

The program listed below runs without error on a solaris 2.6 system,
but prints out "AUDIO_SETINFO: Invalid argument" under NetBSD.

Darrin

	
>How-To-Repeat:

Compile and run the following sample program:

#include <stdlib.h>
#include <stddef.h>
#include <stdio.h>

#include <fcntl.h>
#include <sys/ioctl.h>

#include <sys/audioio.h>

int
main(int argc, char *argv[])
{
	int r;
	int fd;
	audio_info_t info;

	fd = open("/dev/audio", O_WRONLY | O_NDELAY);
	if (fd < 0) {
		perror("Error opening /dev/audio");
		exit(EXIT_FAILURE);
	}

	r = ioctl(fd,AUDIO_GETINFO, &info);
	if (r != 0) {
		perror("AUDIO_GETINFO");
		close(fd);
		exit(EXIT_FAILURE);
	}

	r = ioctl(fd,AUDIO_SETINFO, &info);
	if (r != 0) {
		perror("AUDIO_SETINFO");
		close(fd);
		exit(EXIT_FAILURE);
	}
	
	close(fd);

	return(EXIT_SUCCESS);
}

>Fix:
	
>Audit-Trail:
>Unformatted: