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57bbb7d6f4
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>
46 lines
774 B
Bash
46 lines
774 B
Bash
#!/bin/sh
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# Copyright (C) 2011, 2012 O.S. Systems Software LTDA.
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# Licensed on MIT
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udev_shutdown_hook_handler() {
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status=$1
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module=$2
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if [ "$status" = "pre" ] && [ "$module" = "finish" ]; then
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killall `basename $_UDEV_DAEMON` 2>/dev/null
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fi
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}
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udev_daemon() {
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OPTIONS="/sbin/udevd /lib/udev/udevd /lib/systemd/systemd-udevd"
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for o in $OPTIONS; do
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if [ -x "$o" ]; then
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echo $o
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return 0
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fi
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done
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return 1
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}
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_UDEV_DAEMON=`udev_daemon`
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udev_enabled() {
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if [ -z "$_UDEV_DAEMON" ]; then
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msg "WARNING: Cannot find the udev daemon; daemon will not be started in initramfs."
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return 1
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fi
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return 0
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}
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udev_run() {
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add_module_pre_hook "udev_shutdown_hook_handler"
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mkdir -p /run
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$_UDEV_DAEMON --daemon
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udevadm trigger --action=add
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udevadm settle
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}
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