Module Name:	src
Committed By:	bouyer
Date:		Fri Jan 29 11:17:59 UTC 1999

Modified Files:
	src/sys/dev/scsipi: cd.c scsipi_base.c sd.c
Log Message:
Return ENODEV instead of EIO when we are trying to open a device without media
in the drive. restrict "opening of empty drive" to character devices only
(reading a block device returns a short read instead of ENODEV, which can lead
to confusion).