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         /lib/udev/vol_id ${device%%[0-9]*} | grep -q "^ID_FS_USAGE=raid" && continue
  45
  46         magic=$(/bin/dd if="${device}" bs=4086 skip=1 count=1 2>/dev/null | /bin/dd bs=10 count=1 2>/dev/null) || continue
  47
  48         if [ "${magic}" = "SWAPSPACE2" -o "${magic}" = "SWAP-SPACE" ]
  49         then
  50                 #log "Found ${device}"
  51                 devices="${devices} ${device}"
  52         fi
  53 done
  54
  55 for device in ${devices}
  56 do
  57
  58 cat >> ${FSTAB} << EOF
  59 ${device} swap swap defaults 0 0
  60 EOF
  61
  62 done
  63
  64 log_end_msg