Re: udev.rules behavior changed ?

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

On Fri, 2004-06-11 at 18:03 -0400, Mike Frysinger wrote:
> a while back i asked a question about how to disable device nodes from being 
> created ... a good example is the tty stuff.  by default, 64 tty's are 
> created (0-63) and the only solution is to either edit the kernel (not useful 
> across many different machines and kernel upgrades) or to 'trick' the 
> udev.rules file as so (this is what was suggested and what *used* to work):
> KERNEL="tty[0-9]",    NAME="vc/%n",  SYMLINK="%k"
> KERNEL="tty[0-9]*",   NAME=""
> 
> here you can see that tty0 - tty9 would have the nodes created while 
> tty10-tty63 should disappear ... however, now with udev-026 at least (it's 
> the first time i noticed because i was debugging that tty/666/660 mode bug), 
> i get all the vc nodes in /dev/vc/ with their tty symlinks in /dev/
> 
> is there a 'better' way to do what i want or is this a 'bug' ? :)
> -mike

Your rules are working as expected on my box:

[root@pim kay]# ls -la /udev/tty*
crw-------  1 root root 5,  0 Jun 12 14:09 /udev/tty
lrwxrwxrwx  1 root root     4 Jun 12 14:09 /udev/tty0 -> vc/0
lrwxrwxrwx  1 root root     4 Jun 12 14:09 /udev/tty1 -> vc/1
lrwxrwxrwx  1 root root     4 Jun 12 14:09 /udev/tty2 -> vc/2
lrwxrwxrwx  1 root root     4 Jun 12 14:09 /udev/tty3 -> vc/3
lrwxrwxrwx  1 root root     4 Jun 12 14:09 /udev/tty4 -> vc/4
lrwxrwxrwx  1 root root     4 Jun 12 14:09 /udev/tty5 -> vc/5
lrwxrwxrwx  1 root root     4 Jun 12 14:09 /udev/tty6 -> vc/6
lrwxrwxrwx  1 root root     4 Jun 12 14:09 /udev/tty7 -> vc/7
lrwxrwxrwx  1 root root     4 Jun 12 14:09 /udev/tty8 -> vc/8
lrwxrwxrwx  1 root root     4 Jun 12 14:09 /udev/tty9 -> vc/9
crw-------  1 root root 4, 64 Jun 12 14:09 /udev/ttyS0
crw-------  1 root root 4, 65 Jun 12 14:09 /udev/ttyS1
crw-------  1 root root 4, 66 Jun 12 14:09 /udev/ttyS2
crw-------  1 root root 4, 67 Jun 12 14:09 /udev/ttyS3
crw-------  1 root root 4, 68 Jun 12 14:09 /udev/ttyS4
crw-------  1 root root 4, 69 Jun 12 14:09 /udev/ttyS5
crw-------  1 root root 4, 70 Jun 12 14:09 /udev/ttyS6
crw-------  1 root root 4, 71 Jun 12 14:09 /udev/ttyS7

Are you sure your rules file matches the configured one in udev.conf?
By default, udev reads all files in /etc/udev/rules.d/ ending with
"*.rules".

Please try udevtest:

[root@pim kay]# /usr/bin/udevtest /sys/class/tty/tty9
version 026
looking at '/class/tty/tty9'
configured rule in '/etc/udev/rules.d/10-local.rules' at line 1 applied, added symlink '%k'
configured rule in '/etc/udev/rules.d/10-local.rules' at line 1 applied, 'tty9' becomes 'vc/%n'
creating device node '/udev/vc/9', major = '4', minor = '9', mode = '020600', uid = '0', gid = '0'

[root@pim kay]# /usr/bin/udevtest /sys/class/tty/tty10
version 026
looking at '/class/tty/tty10'
configured rule in '/etc/udev/rules.d/10-local.rules' at line 2 applied, 'tty10' is ignored


If this doesn't help, please build udev with "make DEBUG=true" and look
at the syslog, how your rules are processed.

Good luck,
Kay



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