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#!/bin/sh
usage() {
echo "usage: nureadahead-init [FILE [TIMEOUT [INIT [ARGS...]]]]" >&2
}
case "$1" in
-*) usage; exit 1
esac
case "$#" in
0) file=/.nureadahead timeout=120 init=init;;
1) file=$1 timeout=120 init=init; shift 1;;
2) file=$1 timeout=$2 init=init; shift 2;;
*) file=$1 timeout=$2 init=$3; shift 3;;
esac
export PATH="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"
device=$(awk '$2 == "/" { d=$1 } END { print d }' < /proc/self/mounts)
if [ -n "$device" ]; then
if [ -e "$file" ]; then
nureadahead-preload "$device" < "$file" &
else
echo "nureadahead-init: no file, skipping preload" >&2
fi
nureadahead-collect "$device" "$timeout" > "$file" &
else
echo "nureadahead-init: cannot find root device, skipping preload + collect" >&2
fi
exec "$init" "$@"
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