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#!/bin/bash
#
# Mounts two gocryptfs filesystems, "ping" and "pong" and moves the
# linux-3.0 kernel tree back and forth between them.
#
# When called as "pingpong-rsync.bash" it uses "rsync --remove-source-files"
# for moving the files, otherwise plain "mv".
set -eu
# Run at low priority to not annoy the user too much
renice 19 $$
cd "$(dirname "$0")"
MD5="$PWD/linux-3.0.md5sums"
MYNAME=$(basename "$0")
source ../fuse-unmount.bash
# Setup
../dl-linux-tarball.bash
cd /tmp
PING=$(mktemp -d ping.XXX)
PONG=$(mktemp -d pong.XXX)
mkdir "$PING.mnt" "$PONG.mnt"
# Cleanup trap
# Note: gocryptfs may have already umounted itself because bash relays SIGINT
# Just ignore unmount errors.
trap "set +e ; cd /tmp; fuse-unmount -z $PING.mnt ; fuse-unmount -z $PONG.mnt ; rm -rf $PING $PONG $PING.mnt $PONG.mnt" EXIT
gocryptfs -q -init -extpass="echo test" -scryptn=10 "$PING"
gocryptfs -q -init -extpass="echo test" -scryptn=10 "$PONG"
gocryptfs -q -extpass="echo test" -nosyslog "$PING" "$PING.mnt"
gocryptfs -q -extpass="echo test" -nosyslog "$PONG" "$PONG.mnt"
echo "Initial extract"
tar xf /tmp/linux-3.0.tar.gz -C "$PING.mnt"
move_and_md5() {
if [ "$MYNAME" = "pingpong-rsync.bash" ]; then
echo -n "rsync "
rsync -a --remove-source-files "$1" "$2"
find "$1" -type d -delete
else
echo -n "mv "
mv "$1" "$2"
fi
if [ -e "$1" ]; then
echo "error: source directory $1 was not removed"
exit 1
fi
cd "$2"
echo -n "md5 "
md5sum --status -c "$MD5"
cd ..
}
N=1
while true; do
echo -n "$N: "
move_and_md5 "$PING.mnt/linux-3.0" "$PONG.mnt"
move_and_md5 "$PONG.mnt/linux-3.0" "$PING.mnt"
date +%H:%M:%S
N=$((N+1))
done
wait
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