support suspend2 kernels in initramfs

[Matt Price]

currently users switching to suspend2-enabled kernels need to add support for suspend2 into the initramfs scripts manually. This is an unnecessary user intervention into sensitive miccion-critical files, which can be avoided by adding scripts to the initramfs-tools package which handle suspend2 kernels by default. the following two scripts add support for suspend2 while leaving the boot process untouched in non-suspend2-enabled kernels.

/usr/share/initramfs-tools/scripts/local-premount/suspend2_do_resume :

#!/bin/sh

PREREQ=""

prereqs()
{
        echo "$PREREQ"
}

case $1 in
# get pre-requisites
prereqs)
        prereqs
        exit 0
        ;;
esac

if [ -d /proc/suspend2 ]; then
        echo > /proc/suspend2/do_resume
elif [ -d /sys/power/suspend2 ]; then
        echo > /sys/power/suspend2/do_resume
fi

--------------------------

/usr/share/initramfs-tools/hooks/suspend2ui_usplash_hook :

#!/bin/sh
PREREQ=""

prereqs()
{
        echo "$PREREQ"
}

case $1 in
# get pre-requisites
prereqs)
        prereqs
        exit 0
        ;;
esac

. /usr/share/initramfs-tools/hook-functions

if [ -x /usr/sbin/suspend2ui_usplash ];
then
        mkdir --parents ${DESTDIR}/usr/bin/ 2>/dev/null || true
        copy_exec /usr/sbin/suspend2ui_usplash /usr/bin/
fi

---------------------------------------

The first script is essential, as it enables the resume from suspend. The second script simply integrates the suspend2 resume messages into usplash if the usplash-ui package is installed.

matt

[Matt Price (matt-price)]

adding the above scripts as attachments, wasn't surethe bug report would let me do so later.

[Matt Price (matt-price)]

adds integration with usplash if suspendui_usplash is present

[Ben Collins (ben-collins)]

I believe the sync with Debian fixed this in feisty.

[QuinnStorm (livinglatexkali)]

The relevant code isn't there in the scripts as far as I can tell, did it get moved elsewhere (hardcoded into initramfs-tools perhaps?) For now I've dropped in these scripts

[Matt Price (matt-price)]

thanks quinn for responding -- i hadn't seen the code there either but wasn't sure whether that was just a result of my incompetence & didn't have time to investigate fully. this is great, thanks!

matt

[Nigel Cunningham (nigelc)]

I just had a quick look at my x86 and amd64 machines, and neither seems to have this. Also checked the Changelog.

Regards,

Nigel

[neocarpetbagger (purcell-jr)]

Excellent! Thanks for posting this.

[maximilian attems (maks-debian)]

Please ship that hook together with the ui of suspend2.

initramfs-tools is a generic initramfs generator and works out of the box for generic linux images using vanilla suspend mechanism.
thank you for your work.

[Phillip Susi (psusi)]

This package was removed some time ago, so I am closing this report.