Re: user space way to determine "region" of allocated minors?

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On Mon, Aug 3, 2009 at 3:45 AM, Robert P. J. Day<rpjday@xxxxxxxxxxxxxx> wrote:
>
>  i'm guessing there's no way to do this but, if you list the file
> /proc/devices, you see only the character and block devices and the
> major number corresponding to them:
>
> Character devices:
>  1 mem
>  4 /dev/vc/0
>  4 tty
>  4 ttyS
>  5 /dev/tty
>  5 /dev/console
>  5 /dev/ptmx
>  7 vcs
>  10 misc
>  13 input
>  14 sound
>  21 sg
>  29 fb
>  ... etc etc ...
>
> is there any way, from user space, to see the *minor* number region
> corresponding to those entries?

How about "ls"? e.g:

$ ls -li /dev/vcs*
4472 crw-rw---- 1 vcsa tty 7,   0 2009-08-01 09:56 /dev/vcs
8296 crw-rw---- 1 vcsa tty 7,   2 2009-08-01 09:56 /dev/vcs2

7 is major number, 0 and 2 are minor number of vcs and vcs2 respectively...

CMIIW



-- 
regards,

Mulyadi Santosa
Freelance Linux trainer
blog: the-hydra.blogspot.com

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