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v4l-utils: simplify 70-infrared.rules and fix kernel 4.20 issues

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Using $id to get the rcX device name from the SUBSYSTEMS match,
as used by the upstrem v4l-utils udev rule, is easier and more
stable than using IMPORT{parent}, which needs to transmit info across
two levels (rcX->inputY->eventZ) and breaks with kernel 4.20.

Instead of running a shell script to check for the existance of
/storage/.config/rc_maps.cfg we can use the builtin udev TEST
function.

Also it's better to use ENV variables prefixed with a dot as
they are used only locally in the udev rule file and don't need
to be persisted in the udev database or exported to external tools.

Signed-off-by: Matthias Reichl <hias@horus.com>
This commit is contained in:
Matthias Reichl 2018-12-28 01:14:51 +01:00
parent ce07c47a85
commit 37dc6ef716
1 changed files with 6 additions and 12 deletions
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18
packages/sysutils/v4l-utils/udev.d/70-infrared.rules
View File

@ -1,25 +1,19 @@
# Automatically load the proper keymaps after the Remote Controller device
# creation.
#
# User-defined rules can be stored in /storage/.config/rc_maps.cfg. If that
# file doesn't exist the default rules from /etc/rc_maps.cfg are used.
ACTION=="add", SUBSYSTEMS=="rc", GOTO="begin"
ACTION=="add", KERNEL=="event*", SUBSYSTEM=="input", SUBSYSTEMS=="rc", ENV{.rc_sysdev}="$id", GOTO="begin"
GOTO="end"
LABEL="begin"
SUBSYSTEM=="rc", ENV{rc_sysdev}="$name"
ENV{.rc_maps_cfg}="/etc/rc_maps.cfg"
TEST=="/storage/.config/rc_maps.cfg", ENV{.rc_maps_cfg}="/storage/.config/rc_maps.cfg"
SUBSYSTEM=="input", IMPORT{parent}="rc_sysdev"
KERNEL=="event[0-9]*", ENV{rc_sysdev}=="?*", IMPORT{program}="/usr/bin/sh -c '\
if [ -r /storage/.config/rc_maps.cfg ] ; then \
echo rc_maps_cfg=/storage/.config/rc_maps.cfg ; \
else \
echo rc_maps_cfg=/etc/rc_maps.cfg ; \
fi'"
ENV{rc_maps_cfg}=="?*", RUN+="/usr/bin/ir-keytable -a $env{rc_maps_cfg} -s $env{rc_sysdev}"
RUN+="/usr/bin/ir-keytable -a $env{.rc_maps_cfg} -s $env{.rc_sysdev}"
LABEL="end"