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initramds-framework: add shutdown hook for udev 

In cases where other initramfs modules need to rely on
udev running (ie in my case I have to load firmware on
a device that is slow to start) there needs to be a way
to keep it running during the lifecycle of the initramfs
but still be shut down before swith_root is called.  I
added a  module_pre_hook that will shut down udev before
the finish module is called.

(From OE-Core rev: ce690659ef797bd26dc2be59167aa01744841510)

Signed-off-by: Ian Reinhart Geiser <igeiser@devonit.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Ian Reinhart Geiser 2013-02-03 14:17:02 -05:00 committed by Richard Purdie
parent 60f9aae469
commit 57bbb7d6f4
1 changed files with 10 additions and 2 deletions
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12
meta/recipes-core/initrdscripts/initramfs-framework/udev
View File

@ -2,6 +2,14 @@
# Copyright (C) 2011, 2012 O.S. Systems Software LTDA.
# Licensed on MIT
udev_shutdown_hook_handler() {
status=$1
module=$2
if [ "$status" = "pre" ] && [ "$module" = "finish" ]; then
killall `basename $_UDEV_DAEMON` 2>/dev/null
fi
}
udev_daemon() {
OPTIONS="/sbin/udevd /lib/udev/udevd /lib/systemd/systemd-udevd"
@ -27,11 +35,11 @@ udev_enabled() {
}
udev_run() {
add_module_pre_hook "udev_shutdown_hook_handler"
mkdir -p /run
$_UDEV_DAEMON --daemon
udevadm trigger --action=add
udevadm settle
killall `basename $_UDEV_DAEMON` 2>/dev/null
}