scripts/live-bottom/13swap

   1 #!/bin/sh
   2
   3 #set -e
   4
   5 # initramfs-tools header
   6
   7 PREREQ=""
   8
   9 prereqs()
  10 {
  11         echo "${PREREQ}"
  12 }
  13
  14 case "${1}" in
  15         prereqs)
  16                 prereqs
  17                 exit 0
  18                 ;;
  19 esac
  20
  21 # live-initramfs header
  22
  23 . /scripts/live-functions
  24
  25 log_begin_msg "Setting up swap..."
  26
  27 # live-initramfs script
  28
  29 FSTAB=/root/etc/fstab
  30
  31 if [ -n "${NOSWAP}" ]
  32 then
  33     exit 0
  34 fi
  35
  36 devices=""
  37 for device in /dev/[hs]d[a-z][0-9]*; do
  38     if ! [ -b "$device" ]; then
  39         continue
  40     fi
  41
  42     magic=$(/bin/dd if="$device" bs=4086 skip=1 count=1 2>/dev/null | /bin/dd bs=10 count=1 2>/dev/null) || continue
  43
  44     if [ "$magic" = "SWAPSPACE2" -o "$magic" = "SWAP-SPACE" ]; then
  45 #        log "Found $device"
  46         devices="$devices $device"
  47         fi
  48 done
  49
  50 for device in $devices; do
  51     cat >> $FSTAB <<EOF
  52 $device swap swap defaults 0 0
  53 EOF
  54 done
  55
  56 log_end_msg