libgocryptfs/benchmark-reverse.bash

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#!/bin/bash -eu
# Benchmark gocryptfs' reverse mode
cd "$(dirname "$0")"
MYNAME=$(basename "$0")
source tests/fuse-unmount.bash
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# Download /tmp/linux-3.0.tar.gz
./tests/dl-linux-tarball.bash
cd /tmp
PLAIN=linux-3.0
SIZE=0
if [[ -d $PLAIN ]]; then
SIZE=$(du -s --apparent-size $PLAIN | cut -f1)
fi
if [[ $SIZE -ne 412334 ]] ; then
echo "Extracting linux-3.0.tar.gz"
rm -Rf $PLAIN
tar xf linux-3.0.tar.gz
fi
rm -f $PLAIN/.gocryptfs.reverse.conf
gocryptfs -q -init -reverse -extpass="echo test" -scryptn=10 $PLAIN
MNT=$(mktemp -d /tmp/linux-3.0.reverse.mnt.XXX)
# Cleanup trap
trap "rm -f $PLAIN/.gocryptfs.reverse.conf ; fuse-unmount -z $MNT ; rmdir $MNT" EXIT
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# Mount
gocryptfs -q -reverse -extpass="echo test" $PLAIN $MNT
# Execute command, discard all stdout output, print elapsed time
# (to stderr, unfortunately).
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function etime {
# Make the bash builtin "time" print out only the elapse wall clock
# seconds
TIMEFORMAT=%R
time "$@" > /dev/null
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}
echo -n "LS: "
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etime ls -lR $MNT
echo -n "CAT: "
etime find $MNT -type f -exec cat {} +