'detect' floppy hardware from userland? ioctl?

'detect' floppy hardware from userland? ioctl?

[Jeff Meininger]

I'm writing an app that needs to know what floppy drives are connected to
the system.  Right now, I'm parsing the output of 'dmesg', but 'dmesg' can
fill up so that the part where floppy drives are listed is no longer
available.  Is there an ioctl or some other interface for discovering fd0,
fd1, etc?

Thanks.
BTW, I'm not a list member, please Cc: my address!
-Jeff M

Re: 'detect' floppy hardware from userland? ioctl?

[Justin A]

grep fd /proc/devices
:)

-Justin

On Fri, Aug 17, 2001 at 04:31:27PM -0500, Jeff Meininger wrote:
> 
> I'm writing an app that needs to know what floppy drives are connected to
> the system.  Right now, I'm parsing the output of 'dmesg', but 'dmesg' can
> fill up so that the part where floppy drives are listed is no longer
> available.  Is there an ioctl or some other interface for discovering fd0,
> fd1, etc?
> 
> Thanks.
> BTW, I'm not a list member, please Cc: my address!
> -Jeff M
> 
> -
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Re: 'detect' floppy hardware from userland? ioctl?

[Jeff Meininger]

> grep fd /proc/devices
> :)

That only tells me 'fd'... I want to know 'fd0', 'fd1', etc...

-Jeff M

Re: 'detect' floppy hardware from userland? ioctl?

[Dominik Kubla]

On Fri, Aug 17, 2001 at 04:39:51PM -0500, Jeff Meininger wrote:
> 
> 
> > grep fd /proc/devices
> > :)
> 
> That only tells me 'fd'... I want to know 'fd0', 'fd1', etc...

The fdutils package does that: see the /usr/sbin/MAKEFLOPPIES script

Yours,
  Dominik Kubla
-- 
ScioByte GmbH, Zum Schiersteiner Grund 2, 55127 Mainz (Germany)
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Re: 'detect' floppy hardware from userland? ioctl?

[Helge Hafting]

Jeff Meininger wrote:
> 
> I'm writing an app that needs to know what floppy drives are connected to
> the system.  Right now, I'm parsing the output of 'dmesg', but 'dmesg' can
> fill up so that the part where floppy drives are listed is no longer
> available.  Is there an ioctl or some other interface for discovering fd0,
> fd1, etc?
>

You have got some replies already.  Another way of detection is
to run devfs, you may do a "ls /dev/floppy" and get
0, 1, 2, ...
devfs report exactly the devices you have, not the devices
you _may_ have.  Note that you don't have to convert
your system to use devfs if you don't want to - you can
mount devfs some other place than /dev if all you want
is detection.

Helge Hafting