flashrd.sub

###
#
# fallback harness

c() {
 [ -z "$1" ] && exit 1
 lvl="$1"
 shift

 [ -z "$*" ] && exit 1

 if ! eval $*; then
  echo % $* failure
  if echo "$*" | grep last.output >/dev/null 2>&1; then
   echo % See $TMPDIR/last.output for further diagnostics
  fi
  case $lvl {
  4)
   4; 3; 2; 1; 0;
   ;;
  3)
   3; 2; 1; 0;
   ;;
  2)
   2; 1; 0;
   ;;
  1)
   1; 0;
   ;;
  0)
   0;
   ;;
  }
 fi
}

###
#
# Wait up to 30 seconds for the kernel to catch up,
# otherwise give up umount with fallback harness

umountwait() {
 y=1

 while ! umount $2 2>/dev/null; do
  echo -n "...$y"
  sleep 1
  let y=y+1
  if [ "$y" -gt 30 ]; then
   c $1 umount $2
  fi
 done
}

###
#
# Test Argument

t2() {
 if [ -z "$1" ]; then
  echo "t2: argument missing"
  exit 1
 fi
}

###
#
# Sectors to MBytes

sectors2mbytes() {
 echo $(((($1 / 1024) * bytessec) / 1024))
}

###
#
# MBytes to sectors

mbytes2sectors() {
 echo $(((($1 * 1024) / bytessec) * 1024))
}

###
#
# Find a free vnd

getavailvnd() {
 set -A vndevices `vnconfig -l | grep -i 'not in use' | sed 's/\(vnd[[:digit:]]\).*/\1/'`

 if [ ${#vndevices[@]} -lt "$1" ]; then
   echo "Not enough vnd device(s) available (${#vndevices[@]} < $1)"
   exit 1
 fi
}

###
#
# Return a directory tree size in blocks

getsize() {
  if [ -z "$1" ]; then
    echo "getsize: argument missing"
  fi
  if [ ! -d "$1" ]; then
    echo "getsize: the argument must be a directory"
  fi
  unset BLOCKSIZE
  set -- $(du -s $1)
  echo $1
}