Bug 14561

	Calling ioctl (fd, CDIOCEJECT, (void*) 0) from within a C program
	for an `fd' value which is an open file descriptor for a SCSI CDROM
	drive that *does* have eject capabilities and that *does* currently
	contain a loaded CD fails to cause the drive to perform the eject
	operation, and the call returns with a negative (-1?) result and
	with ERRNO set to the mysterious and uninformative value of `EIO'
	(``Input/output error'').

Fix: 

Manually eject the CD.  (Difficult, if you are not physically adjacent
	to it.)
How-To-Repeat: 
	Compile and run the following trivial program giving it "/dev/cd0c"
	as its one and only command line argument.  Execute the program
	_only_ on a system with a SCSI CDROM drive that has programmed
	ejection capability, and only when there is already a CD loaded
	in the drive.  (I also tried specifying "/dev/rcd0c" and also
	"/dev/cd0a" and even "/dev/rcd0a" and none of these worked any
	better.)

	--------------------------------------------------------------------
	/* eject.c - program for FreeBSD to eject a CD */
	/* Usage:
		eject [device]
	*/
	/* Copyright (c) 1999 Ronald F. Guilmette; all rights reserved. */
	
	#include <stdio.h>
	#include <errno.h>
	#include <string.h>
	#include <fcntl.h>
	#include <unistd.h>
	#include <sys/cdio.h>
	
	static char const *pname;
	
	int
	main (register int const argc, register char const **argv)
	{
	  register int ifd;
	  register char const *filename;
	
	  pname = strrchr (argv[0], '/');
	  pname = pname ? pname + 1 : argv[0];
	
	  filename = argv[1];
	
	  if ((ifd = open (filename, O_RDONLY)) == -1)
	    {
	      fprintf (stderr, "%s: Error opening `%s': %s\n",
		       pname, filename, strerror (errno));
	      return 1;
	    }
	  if (ioctl (ifd, CDIOCEJECT, (void*) 0) == -1)
	    {
	      fprintf (stderr, "%s: Error opening `%s': %s\n",
		       pname, filename, strerror (errno));
	      return 1;
	    }
	  close (ifd);
	  return 0;
	}
	--------------------------------------------------------------------