mod-suspend.sh

   1 #!/bin/sh
   2 SUSPEND_RCSID='$Revision$ $Date::                            $'
   3
   4 # geninitrd mod: suspend
   5 USE_SUSPEND=${USE_SUSPEND:-yes}
   6
   7 # resume device
   8 resume_dev=""
   9
  10 # setup geninitrd module
  11 # @access       public
  12 setup_mod_suspend() {
  13         # XXX this needs tuxonice loaded first
  14         if is_yes "$USE_SUSPEND" && is_yes "$USE_TUXONICE"; then
  15                 warn "Tuxonice and mainline suspend are exclusive!"
  16         fi
  17
  18         resume=$(find_tool $initrd_dir/resume /usr/${_lib}/suspend/resume /usr/sbin/resume)
  19
  20         if [ ! -x "$resume" ] || [ ! -f /etc/suspend.conf ]; then
  21                 USE_SUSPEND=no
  22         fi
  23 }
  24
  25 # find modules for for suspend
  26 # @access       public
  27 find_modules_suspend() {
  28         resume_dev="$(awk '/^resume device =/ { print $4 } ' /etc/suspend.conf)"
  29
  30         local vgvolumes=$VGVOLUMES
  31         find_modules_for_devpath $resume_dev
  32
  33         if [ "$VGVOLUMES" != "$vgvolumes" ]; then
  34                 # save our VG to be able to differenciate between rootfs VG
  35                 SUSPENDVG=$VGVOLUMES
  36                 VGVOLUMES=$vgvolumes
  37                 debug "suspend device is on LVM"
  38         fi
  39 }
  40
  41 # generate initrd fragment
  42 # @access       public
  43 initrd_gen_suspend() {
  44         if ! is_yes "$USE_SUSPEND"; then
  45                 return
  46         fi
  47
  48         debug "Setting up suspend..."
  49
  50         mknod $DESTDIR/dev/snapshot c 10 231
  51         mkdir -p $DESTDIR${resume_dev%/*}
  52         inst $resume_dev $resume_dev
  53
  54         inst /etc/suspend.conf /etc/suspend.conf
  55         if [ -x /usr/${_lib}/suspend/resume ]; then
  56                 inst_exec /usr/${_lib}/suspend/resume /bin/resume
  57         else
  58                 inst_exec /usr/sbin/resume /bin/resume
  59         fi
  60
  61         add_linuxrc <<-'EOF'
  62         resume=no
  63         for arg in $CMDLINE; do
  64                 if [ "${arg##resume=}" != "${arg}" ]; then
  65                         resume=yes
  66                 fi
  67         done
  68         if [ "$resume" = "yes" ]; then
  69                 resume
  70         fi
  71         EOF
  72 }