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 $4 } ' /etc/suspend.conf)"
  29
  30         # save state
  31         local vgvolumes=$LVM_VGVOLUMES
  32         find_modules_for_devpath $resume_dev
  33
  34         # check for saved state, differenciate between rootfs VG
  35         if [ "$LVM_VGVOLUMES" != "$vgvolumes" ]; then
  36                 # save suspend VG int oseparate var
  37                 LVM_SUSPENDVG=$LVM_VGVOLUMES
  38                 LVM_VGVOLUMES=$vgvolumes
  39                 debug "suspend device is on LVM"
  40         fi
  41 }
  42
  43 # generate initrd fragment
  44 # @access       public
  45 initrd_gen_suspend() {
  46         if ! is_yes "$USE_SUSPEND"; then
  47                 return
  48         fi
  49
  50         debug "Setting up suspend..."
  51
  52         mknod $DESTDIR/dev/snapshot c 10 231
  53         mkdir -p $DESTDIR${resume_dev%/*}
  54         inst $resume_dev $resume_dev
  55
  56         inst /etc/suspend.conf /etc/suspend.conf
  57         if [ -x /usr/${_lib}/suspend/resume ]; then
  58                 inst_exec /usr/${_lib}/suspend/resume /bin/resume
  59         else
  60                 inst_exec /usr/sbin/resume /bin/resume
  61         fi
  62
  63         add_linuxrc <<-'EOF'
  64         resume=no
  65         for arg in $CMDLINE; do
  66                 if [ "${arg##resume=}" != "${arg}" ]; then
  67                         resume=${arg##resume=}
  68                 fi
  69         done
  70         if [ "$resume" = "yes" ]; then
  71                 resume
  72         fi
  73         EOF
  74 }