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#!/bin/bash
# called by dracut
check() {
swap_on_netdevice() {
local _dev
for _dev in "${swap_devs[@]}"; do
block_is_netdevice "$(get_maj_min "$_dev")" && return 0
done
return 1
}
# Only support resume if hibernation is currently on
# and no swap is mounted on a net device
[[ $hostonly ]] || [[ $mount_needs ]] && {
swap_on_netdevice || [[ -f /sys/power/resume && "$(< /sys/power/resume)" == "0:0" ]] || grep -rq '^\|[[:space:]]resume=' /proc/cmdline /etc/cmdline /etc/cmdline.d /etc/kernel/cmdline /usr/lib/kernel/cmdline 2> /dev/null && return 255
}
return 0
}
# called by dracut
cmdline() {
local _resume
for dev in "${!host_fs_types[@]}"; do
[[ ${host_fs_types[$dev]} =~ ^(swap|swsuspend|swsupend)$ ]] || continue
_resume=$(shorten_persistent_dev "$(get_persistent_dev "$dev")")
[[ -n ${_resume} ]] && printf " resume=%s" "${_resume}"
done
}
# called by dracut
install() {
local _bin
local _resumeconf
if [[ $hostonly_cmdline == "yes" ]]; then
_resumeconf=$(cmdline)
[[ $_resumeconf ]] && printf "%s\n" "$_resumeconf" >> "${initdir}/etc/cmdline.d/95resume.conf"
fi
# if systemd is included and has the hibernate-resume tool, use it and nothing else
if dracut_module_included "systemd" && [[ -x $dracutsysrootdir$systemdutildir/systemd-hibernate-resume ]]; then
inst_multiple -o \
"$systemdutildir"/system-generators/systemd-hibernate-resume-generator \
"$systemdsystemunitdir"/systemd-hibernate-resume@.service \
"$systemdutildir"/systemd-hibernate-resume
return 0
fi
# Optional uswsusp support
for _bin in /usr/sbin/resume /usr/lib/suspend/resume /usr/lib64/suspend/resume /usr/lib/uswsusp/resume /usr/lib64/uswsusp/resume; do
[[ -x $dracutsysrootdir${_bin} ]] && {
inst "${_bin}" /usr/sbin/resume
[[ $hostonly ]] && [[ -f $dracutsysrootdir/etc/suspend.conf ]] && inst -H /etc/suspend.conf
break
}
done
if ! dracut_module_included "systemd"; then
inst_hook cmdline 10 "$moddir/parse-resume.sh"
else
inst_script "$moddir/parse-resume.sh" /lib/dracut/parse-resume.sh
fi
inst_script "$moddir/resume.sh" /lib/dracut/resume.sh
}
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