Re: [BUG] FLOPPY DRIVER since 5.10.20

[Mark Hounschell]

On 7/26/21 3:57 AM, Denis Efremov wrote:
> Hi,
>
> On 7/23/21 9:47 PM, Mark Hounschell wrote:
> > These 2 incremental patches, patch-5.10.19-20 and patch-5.11.2-3 have broken the user land fd = open("/dev/fd0", (O_RDWR | O_NDELAY)); functionality.
>
> Thank you for the report, I'm looking into this.
>
> > Since FOREVER before the patch, when using O_NDELAY, one could open the floppy device with no media inserted or even with write protected media without error. "Read-only file system" status is returned only when we actually tried to write to it. We have software still in use today that relies on this functionality.
>
> If it's a project with open sources could you please give a link?
>
> Regards,
> Denis
This is immaterial but fdutils and libdsk both use rely on this flag. Who 
can know who else does. The point is it should NOT have been changed.

Mark