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 if [ -n "${NOSWAP}" ] || [ -n "${NOFSTAB}" ]
  24 then
  25         exit 0
  26 fi
  27
  28 . /scripts/live-functions
  29
  30 log_begin_msg "Setting up swap..."
  31
  32 # live-initramfs script
  33
  34 FSTAB=/root/etc/fstab
  35 devices=""
  36
  37 for device in /dev/[hs]d[a-z][0-9]*
  38 do
  39         if ! [ -b "$device" ]
  40         then
  41                 continue
  42         fi
  43
  44         magic=$(/bin/dd if="$device" bs=4086 skip=1 count=1 2>/dev/null | /bin/dd bs=10 count=1 2>/dev/null) || continue
  45
  46         if [ "$magic" = "SWAPSPACE2" -o "$magic" = "SWAP-SPACE" ]
  47         then
  48                 #log "Found $device"
  49                 devices="$devices $device"
  50         fi
  51 done
  52
  53 for device in $devices
  54 do
  55
  56 cat >> $FSTAB << EOF
  57 $device swap swap defaults 0 0
  58 EOF
  59
  60 done
  61
  62 log_end_msg