[MDEV] mdev and CONFIG_SYSFS_DEPRECATED

[Natanael Copa]

On Wed, 2007-05-09 at 23:46 +0200, Souf wrote:
> Hi all,
> I rewrote mdev so that it can work with or without CONFIG_SYSFS_DEPRECATED in the kernel,
> this rewriting implies a minor modification of the syntax of mdev.config
> New the mdev can:
> 1- create symlinks
>         <symlink> -> <target>
>         stderr -> /proc/self/fd/2
>         XOR -> null
> 
> 2- create (sub-)directories
>         <(sub-)directory> <octal permissions>
>         bus/usb/001 0755
>         disk/by-id 0755
> 
> 3- create a device in a (sub-)directory
>         <device regex> <uid>:<gid> <octal permissions> [</>>/>
> <(sub-)directory> <octal permissions>]
>         seq 0:0 0666 >> snd 0755
>         pcmC[0-9]D[0-9]p 0:0 0666 >> snd 0755
>         event[0-9] 0:0 0600 >> input 0755
> 
> 4- execute an command
>         <device regex> <uid>:<gid> <octal permissions> [</>>/>
> <(sub-)directory> <octal permissions>] [<@|$|*> <command>]
>         controlC[0-9] 0:0 0666 >> snd 0755  @ echo "hello $MDEV"
>         seq     0:0 0666 $echo "good bye $MDEV"
>         timer 0:0 0666 >> snd 0755 * echo "Hi $MDEV"    
> 
>         @ Run after creating the device.
>         $ Run before removing the device.
>         * Run both after creating and before removing the device.

Is this new? Isnt that how current mdev works?

> 5- work with or without CONFIG_SYSFS_DEPRECATED

I just came across this one while upgrading to 2.6.20. This should be
fixed even if the rest is rejected.

> I awaits your reactions and your ideas

Havent looked at the code too much yet, but I definitively like the idea
of letting mdev create devs in subdirs.

I wonder if it might be worth having dir creation as a config option?

> Regards
> 
> Malek
> 
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