Retrieving disk geometry

[phk at phk.freebsd.dk (Poul-Henning Kamp)]

In message <20030603001755_(_dot_)_S68271-100000_(_at_)_starbug_(_dot_)_ugh_(_dot_)_net_(_dot_)_au>, Andrew writes:
>Hi,
>
>Under FreeBSD 4.x the ioctl DIOCGDINFO could be used to retrieve the
>number of cylinders, heads and sectors of a drive. This could be called on
>/dev/ad0 for example. Under FreeBSD 5 it seems to produce "Inappropriate
>ioctl for device" unless you call it on an individual partition
>(/dev/ad0s1a for example).
>
>Is there a way around this?

Use the ioctls you find in <sys/disk.h> they should work on all
disk devices.

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Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
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