# hook for compcache
# based on Ubuntu initramfs hook
#
#


if [ $TCOS_COMPCACHE ]; then
  stat_before

  tcos_manual_add_modules ramzswap
  tcos_manual_add_modules zram


  # need swapon for preference option (busybox swapon don't have it)
  cpifexists /sbin/swapon /sbin/

  [ -x /usr/sbin/rzscontrol ] && cpifexists /usr/sbin/rzscontrol /usr/sbin/

  mkdir -p $DESTDIR/etc/udev/rules.d

cat << EOF > $DESTDIR/etc/udev/rules.d/80-compcache.rules
KERNEL=="ramzswap0", ACTION=="add", RUN+="/sbin/swapon -p 100 /dev/ramzswap0 2>/dev/null"
EOF



cat << EOF > $DESTDIR/scripts/init-top/compcache
#!/bin/sh

# new header not using prereqs
if [ "\$1" = "prereqs" ]; then
  echo ""
  exit 0
fi

quiet=n

. /conf/tcos.conf
. /conf/tcos-run-functions

# find total amount of available ram
TOTAL_RAM=\$(grep MemTotal /proc/meminfo |tr -d ': [A-Z][a-z]')

# Do not use compcache if we have more than 256M
if [ "\${TOTAL_RAM}" -gt 262144 ]; then
    exit 0
fi

# add TCOS_COMPCACHE_PERCENT% of RAM (by default 20)
kbytes="\$((\$TOTAL_RAM * $TCOS_COMPCACHE_PERCENT / 100))"

AVALAIBLE_RAM=\$(grep 'Inactive:' /proc/meminfo |tr -d ': [A-Z][a-z]')
if [ "\${kbytes}" -gt "\${AVALAIBLE_RAM}" ]; then
  kbytes=\$(( \${AVALAIBLE_RAM} - 500 ))
fi


if tcos_find_module "zram"; then
  modprobe zram
  echo \$((1024*\$kbytes)) > /sys/block/zram0/disksize
  /sbin/mkswap /dev/zram0 >/dev/null 2>&1
  /sbin/swapon -p 100 /dev/zram0 >/dev/null 2>&1
else
  modprobe -q --ignore-install ramzswap
fi

EOF

  chmod 0755 $DESTDIR/scripts/init-top/compcache

  stat_after "Compcache support ($TCOS_COMPCACHE_PERCENT%)"
fi