mod-suspend.sh

   1 #!/bin/sh
   2 #
   3 # geninitrd mod: suspend
   4 USE_SUSPEND=${USE_SUSPEND:-yes}
   5
   6 # resume device
   7 resume_dev=""
   8
   9 # setup geninitrd module
  10 # @access       public
  11 setup_mod_suspend() {
  12         # XXX this needs tuxonice loaded first
  13         if is_yes "$USE_SUSPEND" && is_yes "$USE_TUXONICE"; then
  14                 warn "Tuxonice and mainline suspend are exclusive!"
  15         fi
  16
  17         resume=$(find_tool $initrd_dir/resume /usr/${_lib}/suspend/resume /usr/sbin/resume)
  18
  19         if [ ! -x "$resume" ] || [ ! -f /etc/suspend.conf ]; then
  20                 USE_SUSPEND=no
  21         fi
  22 }
  23
  24 # find modules for for suspend
  25 # @access       public
  26 find_modules_suspend() {
  27         resume_dev="$(awk '/^resume device =/ { print $4 } ' /etc/suspend.conf)"
  28
  29         local vgvolumes=$VGVOLUMES
  30         find_modules_for_devpath $resume_dev
  31
  32         if [ "$VGVOLUMES" != "$vgvolumes" ]; then
  33                 # save our VG to be able to differenciate between rootfs VG
  34                 SUSPENDVG=$VGVOLUMES
  35                 VGVOLUMES=$vgvolumes
  36                 debug "suspend device is on LVM"
  37         fi
  38 }
  39
  40 # generate initrd fragment
  41 # @access       public
  42 initrd_gen_suspend() {
  43         debug "Setting up suspend..."
  44
  45         mknod $DESTDIR/dev/snapshot c 10 231
  46         mkdir -p $DESTDIR${resume_dev%/*}
  47         inst $resume_dev $resume_dev
  48
  49         inst /etc/suspend.conf /etc/suspend.conf
  50         if [ -x /usr/${_lib}/suspend/resume ]; then
  51                 inst_exec /usr/${_lib}/suspend/resume /bin/resume
  52         else
  53                 inst_exec /usr/sbin/resume /bin/resume
  54         fi
  55
  56         add_linuxrc <<-'EOF'
  57         resume=no
  58         for arg in $CMDLINE; do
  59                 if [ "${arg##resume=}" != "${arg}" ]; then
  60                         resume=yes
  61                 fi
  62         done
  63         if [ "$resume" = "yes" ]; then
  64                 resume
  65         fi
  66         EOF
  67 }