modules.d/95resume/module-setup.sh

   1 #!/bin/bash
   2
   3 # called by dracut
   4 check() {
   5     # No point trying to support resume, if no swap partition exist
   6     [[ $hostonly ]] || [[ $mount_needs ]] && {
   7         for fs in "${host_fs_types[@]}"; do
   8             [[ $fs =~ ^(swap|swsuspend|swsupend)$ ]] && return 0
   9         done
  10         return 255
  11     }
  12
  13     return 0
  14 }
  15
  16 # called by dracut
  17 cmdline() {
  18     local _resume
  19
  20     for dev in "${!host_fs_types[@]}"; do
  21         [[ ${host_fs_types[$dev]} =~ ^(swap|swsuspend|swsupend)$ ]] || continue
  22         _resume=$(shorten_persistent_dev "$(get_persistent_dev "$dev")")
  23         [[ -n ${_resume} ]] && printf " resume=%s" "${_resume}"
  24     done
  25 }
  26
  27 # called by dracut
  28 install() {
  29     local _bin
  30
  31     if [[ $hostonly_cmdline == "yes" ]]; then
  32         local _resumeconf=$(cmdline)
  33         [[ $_resumeconf ]] && printf "%s\n" "$_resumeconf" >> "${initdir}/etc/cmdline.d/95resume.conf"
  34     fi
  35
  36     # if systemd is included and has the hibernate-resume tool, use it and nothing else
  37     if dracut_module_included "systemd" && [[ -x $dracutsysrootdir$systemdutildir/systemd-hibernate-resume ]]; then
  38         inst_multiple -o \
  39                       $systemdutildir/system-generators/systemd-hibernate-resume-generator \
  40                       $systemdsystemunitdir/systemd-hibernate-resume@.service \
  41                       $systemdutildir/systemd-hibernate-resume
  42         return 0
  43     fi
  44
  45     # Optional uswsusp support
  46     for _bin in /usr/sbin/resume /usr/lib/suspend/resume /usr/lib/uswsusp/resume
  47     do
  48         [[ -x "$dracutsysrootdir${_bin}" ]] && {
  49             inst "${_bin}" /usr/sbin/resume
  50             [[ $hostonly ]] && [[ -f $dracutsysrootdir/etc/suspend.conf ]] && inst -H /etc/suspend.conf
  51             break
  52         }
  53     done
  54
  55     if ! dracut_module_included "systemd"; then
  56         inst_hook cmdline 10 "$moddir/parse-resume.sh"
  57     else
  58         inst_script "$moddir/parse-resume.sh" /lib/dracut/parse-resume.sh
  59     fi
  60
  61     inst_script  "$moddir/resume.sh" /lib/dracut/resume.sh
  62 }
  63