Hello,
Are there some missing kernel device rules in 55-lfs.rules from
udev-config-20080217?
These following rules do not exist:
KERNEL=="ptmx", MODE="0666", GROUP="tty"
KERNEL=="kmem", MODE="0640", GROUP="kmem"
KERNEL=="mem", MODE="0640", GROUP="kmem"
KERNEL=="port", MODE="0640", GROUP="kmem"
KERNEL=="null", MODE="0666"
KERNEL=="zero", MODE="0666"
KERNEL=="full", MODE="0666"
These rules do exist in the stable 6.3 book in the file 25-lfs.rules from
udev-config-6.3.
There is a note in the Changelog as follows:
2007-10-27
* 25-lfs.rules: Some rules in here are duplicates of rules from
udev's
new 50-udev-defaults.rules file; remove them. Override permissions
where needed elsewhere (and document overrides in comments).
However, I don't think that this 50-udev-defaults.rules file exists in
Udev-113, which is the Udev version in current in the LFS SVN ( rev. 8494 .)
( 50-udev-defaults.rules does exist in the latest udev-118 package from
kernel.org )
The bottom line for me is that after building the latest LFS from SVN (
r8494 - March 7, 2008 ) the permissions of /dev/null get set to 0660 by udev
unless I put the KERNEL=="null", MODE="0666" rule in
/etc/udev/rules.d/55-lfs.rules.
For sake of reference, here are the Core kernel device rules in
55-lfs.rulesfrom udev-config-20080217:
KERNEL=="random", MODE="0444"
KERNEL=="urandom", MODE="0444"
KERNEL=="aio", MODE="0444"
KERNEL=="kmsg", MODE="0600"
KERNEL=="rtc", MODE="0666"
And here are the Core kernel device rules in in 25-lfs.rules from
udev-config-6.3
KERNEL=="ptmx", MODE="0666", GROUP="tty"
*KERNEL=="random", MODE="0444"
*KERNEL=="urandom", MODE="0444"
KERNEL=="kmem", MODE="0640", GROUP="kmem"
KERNEL=="mem", MODE="0640", GROUP="kmem"
KERNEL=="port", MODE="0640", GROUP="kmem"
KERNEL=="null", MODE="0666"
KERNEL=="zero", MODE="0666"
KERNEL=="full", MODE="0666"
*KERNEL=="aio", MODE="0444"
*KERNEL=="kmsg", MODE="0600"
*KERNEL=="rtc", MODE="0666"
Thanks for your attention.
Troy
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