mod-blkid.sh

   1 #!/bin/sh
   2 # geninitrd mod: blkid
   3 USE_BLKID=${USE_BLKID:-yes}
   4
   5 # true if we should parse UUID= or LABEL= for root parameter
   6
   7 # setup geninitrd module
   8 # @access       public
   9 setup_mod_blkid() {
  10         blkid=$(find_tool $initrd_dir/blkid /sbin/initrd-blkid)
  11
  12         if [ ! -x "$blkid" ]; then
  13                 USE_BLKID=no
  14         fi
  15 }
  16
  17 # generate initrd fragment
  18 # @access       public
  19 initrd_gen_blkid() {
  20         if ! is_yes "$USE_BLKID"; then
  21                 return
  22         fi
  23         verbose "Adding BLKID support to initrd"
  24
  25         inst_exec $blkid /sbin/blkid
  26         initrd_gen_devices
  27         add_linuxrc <<-'EOF'
  28                 # if built with blkid change ROOT=LABEL=something into ROOT=/dev/device parsed by blkid
  29                 if [ "${ROOT##LABEL=}" != "${ROOT}" -o "${ROOT##UUID=}" != "${ROOT}" ]; then
  30                         blkid="$(/sbin/blkid -t $ROOT -o device -l)"
  31                         if [ -n "$blkid" ]; then
  32                                 ROOT=$blkid
  33                         fi
  34                 fi
  35         EOF
  36 }