Re: [PATCH] 2.5.14 IDE 57

[Padraig Brady]

Dave Jones wrote:
> On Tue, May 07, 2002 at 02:57:46PM +0100, Anton Altaparmakov wrote:
>  > How do I get this information with hdparm please?
>  > 
>  > [aia21@drop ide]$ cat via
> 
> Bartlomiej Zolnierkiewicz moved all this stuff to userspace
> a long time ago in 'ideinfo'.
> 
>  > [aia21@drop hda]$ cat cache
>  > 1916
>  > [aia21@drop hda]$ cat capacity
>  > 80418240
>  > [aia21@drop hda]$ cat geometry
>  > physical     79780/16/63
>  > logical      5005/255/63
>  > 
>  > And hdparm never gives you the physical geometry AFAICS.
> 
> Why would a normal user ever need to know this info?

Well one application we have here is a backup script in a web
interface (php running as nobody), which copies a whole disk
(compact flash) to the client while indicating the total size
to the client for feedback:

Header("Content-type: application/octet-stream");
$flash_size=`cat /proc/ide/hda/capacity`;
$flash_size=$flash_size*512;
Header("Content-length: $flash_size");
Header("Content-Disposition: attachment; filename=flash.img");
passthru("/bin/suid_copy_flash");

Now you could of course have a /bin/suid_get_flash_size
but this is messy/less efficient?

Padraig.