Date: Fri, 23 Aug 2002 07:59:35 +0200 (MET DST) From: j@uriah.heep.sax.de (Joerg Wunsch) To: freebsd-scsi@freebsd.org Cc: gnats-followup@freebsd.org Subject: Re: kern/15608: acd0 / cd0 give inconsistent errors on empty tray open() Message-ID: <200208230559.g7N5xZEo044082@uriah.heep.sax.de> References: <20020822150931.A10866@panzer.kdm.org> <20020822.152329.129782316.imp@bsdimp.com>
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"M. Warner Losh" <imp@bsdimp.com> wrote:
> EIO means "The device is there, but the driver had problems
> interacting with it" while ENXIO means "the device isn't there at
> all." As such, EIO is the more correct error to return in this case.
I disagree.
6 ENXIO No such device or address. Input or output on a special file
referred to a device that did not exist, or made a request beyond
the limits of the device. This error may also occur when, for
example, a tape drive is not online or no disk pack is loaded on
a drive.
The case of ``a tape drive is not online'' or ``no disk pack is loaded''
sounds fairly similar to me to ``no CD-ROM inserted''.
It's really sad that ENXIO is a catch-all error code, but it really
seems to be intented for this.
--
cheers, J"org .-.-. --... ...-- -.. . DL8DTL
http://www.sax.de/~joerg/ NIC: JW11-RIPE
Never trust an operating system you don't have sources for. ;-)
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