Re: [ANNOUNCE] udev 007 release

[Kay Sievers <kay.sievers@vrfy.org>]

On Tue, Dec 02, 2003 at 06:21:52PM +0100, Marco d'Itri wrote:
> On Dec 02, Kay Sievers <kay.sievers@vrfy.org> wrote:
> 
>  >A better pattern matching seems unavoidable.
>  >Is anyone already improving namedev's strncpm_wildcard()?
>  >If nobody comes up, I will do it until tomorrow night :)
> At least [] characters classes should be implemented. Taking tty* as an
> example, if you can't match on tty[0-9]+ you would have to individually
> list 16 "tty<uppercase letter>" serial device names.
> 
> If a partial reimplementation of extended regexps is too much complex to
> be worth it, then a good enough substitute would be the ability to match
> on one or more numbers.

Yes, this is already working in my tree:
REPLACE, KERNEL="tty[0-9]*", NAME="vc/%n"


Dec  2 18:30:57 pim udev[10109]: build_kernel_number: kernel_number='49'
Dec  2 18:30:57 pim udev[10109]: strncmp_wildcard: fnmatch p:ttyS* s:tty49 r:1
Dec  2 18:30:57 pim udev[10109]: strncmp_wildcard: fnmatch p:tty[0-9]* s:tty49 r:0
Dec  2 18:30:57 pim udev[10109]: apply_format: substitute kernel number '49'
Dec  2 18:30:57 pim udev[10109]: udev_add_device: name='vc/49'
Dec  2 18:30:57 pim udev[10109]: create_node: mknod(/udev/vc/49, 020666, 4, 49)


It's based on libc's fnmatch(), that supports (*, ?, []).
http://developer.novell.com/ndk/doc/libc/index.html?page=/ndk/doc/libc/libc_enu/data/amsgxku.html

But I have to port it to klibc.
I will do this tomorrow if nobody comes up with a better idea :)

Kay



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