Date: Sat, 15 Jan 2000 16:52:59 -0500 (EST) From: Colin <cwass99@home.com> To: "Chad R. Larson" <chad@DCFinc.com> Cc: freebsd-stable@FreeBSD.ORG, drek@MonsterByMistake.Com Subject: Re: access floppy rw to lock system Message-ID: <XFMail.20000115165259.cwass99@home.com> In-Reply-To: <200001140144.SAA07443@freeway.dcfinc.com>
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On 14-Jan-2000 Chad R. Larson wrote:
>
> Well, I was protesting the logic of doing a read/write mount of read-only
> media. Mount it R/O and there is no issue.
>
> You wouldn't mount a CD-ROM read/write, would you?
>
Of course not ;) My point was if you inserted the floppy with the intent
of writing to it (eg to create a set of boot disks to do another FreeBSD
install ;)) and forgot to check the location of the tab your next step will be
a reboot.
> And, it would have to be "unnoticed" by someone with root
> permissions, or it can't be mounted at all (or written to, either).
>
I didn't realize "root" access automagically bestowed an inability to make
mistakes ;) I agree root needs to be paying a lot more attention than a normal
user, but as my kid so eloquently puts it, "stuff happens" ;)
> But I will concede that doing that approximately silly thing
> shouldn't hang the system. I'd probably vote that the driver should
> test for write protect, and the mount(2) call should act as though
> "MT_RDONLY" had been specified.
>
> Either that, or fail with a EPERM or ENODEV.
>
I guess, from this last bit, we basically agree that there is a problem
here, we just don't view it's importance the same ;)
cheers,
Colin
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