Romain Lenglet wrote:
Liu Zhenghui wrote:
I installed xenomai on Debian Linux sid. For some reason, I
recently changed to udev to manage the /dev. Then udev always
report error on
rules installed by xenomai at boot time like following:
: add_to_rules: invalid KERNEL operation
: add_to_rules: invalid rule
: '/etc/udev/rules.d/udev.rules:100'
As a result, the device rtheap and rtp* is not controlled by
udev rules and always has default mode "0660".
I found there is wrong with rules installed by xenomai, which
source is located at ksrc/nucleus/udev/*.rules:
# real-time heap device (Xenomai:rtheap)
KERNEL="rtheap", NAME="rtheap", MODE="0666"
~should be "==" here, not "="
My udev version in debian is 0.091-2, kernel version is
2.6.15.7
Is it a bug? Luckly, it works after I changed "=" to "=="
I also got such errors with my own rules and rules from other
packages.
Debian's udev package applies an upstream patch which makes udev
more strict about the syntax, since version 090 (21 April 2006).
See /usr/share/doc/udev/changelog.Debian.gz.
So, you are right, it should be:
KERNEL=="rtheap", NAME="rtheap", MODE="0666"
Key match and assignment are now strictly syntactically
different, and KERNEL is a read-only key which can't be
assigned.
I think that it is safe to change KERNEL= into KERNEL== in
Xenomai's rules files, since the == syntax has been introduced
since Udev version 055 (March 2005).
By the way, I think that the NAME= assignment is superfluous,
because by default NAME is the kernel-assigned name in KERNEL.
Attached is the two-line patch.
Applied, thanks.
--
Philippe.
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