shell scripts: fix shellcheck warnings

4 files changed, 70 insertions, 70 deletions

diff --git a/tests/stress_tests/extractloop.bash b/tests/stress_tests/extractloop.bash
index cdd0c25..1f78a5e 100755
--- a/tests/stress_tests/extractloop.bash
+++ b/tests/stress_tests/extractloop.bash
@@ -28,17 +28,17 @@ source ../fuse-unmount.bash
 
 # Setup dirs
 ../dl-linux-tarball.bash
-cd $TMPDIR
+cd "$TMPDIR"
 EXTRACTLOOP_TMPDIR=$TMPDIR/extractloop_tmpdir
-mkdir -p $EXTRACTLOOP_TMPDIR
-CRYPT=$(mktemp -d $EXTRACTLOOP_TMPDIR/XXX)
+mkdir -p "$EXTRACTLOOP_TMPDIR"
+CRYPT=$(mktemp -d "$EXTRACTLOOP_TMPDIR/XXX")
 CSV=$CRYPT.csv
 MNT=$CRYPT.mnt
-mkdir $MNT
+mkdir "$MNT"
 
-function check_md5sums {
+check_md5sums() {
 	if command -v md5sum > /dev/null ; then
-		md5sum --status -c $1
+		md5sum --status -c "$1"
 	else
 		# MacOS / darwin which do not have the md5sum utility
 		# installed by default
@@ -52,50 +52,50 @@ FS=""
 if [ $# -eq 1 ] && [ "$1" == "-encfs" ]; then
 	FS=encfs
 	echo "Testing EncFS"
-	encfs --extpass="echo test" --standard $CRYPT $MNT > /dev/null
+	encfs --extpass="echo test" --standard "$CRYPT" "$MNT" > /dev/null
 elif [ $# -eq 1 ] && [ "$1" == "-loopback" ]; then
 	FS=loopback
 	echo "Testing go-fuse loopback"
 	rm -f /tmp/loopback*.memprof
-	loopback -memprofile=/tmp/loopback $MNT $CRYPT &
+	loopback -memprofile=/tmp/loopback "$MNT" "$CRYPT" &
 	FSPID=$(jobs -p)
 	disown
 else
 	FS=gocryptfs
 	echo "Testing gocryptfs"
-	gocryptfs -q -init -extpass="echo test" -scryptn=10 $CRYPT
-	gocryptfs -q -extpass="echo test" -nosyslog -fg $CRYPT $MNT &
+	gocryptfs -q -init -extpass="echo test" -scryptn=10 "$CRYPT"
+	gocryptfs -q -extpass="echo test" -nosyslog -fg "$CRYPT" "$MNT" &
 	FSPID=$(jobs -p)
 	disown
-	#gocryptfs -q -extpass="echo test" -nosyslog -memprofile /tmp/extractloop-mem $CRYPT $MNT
+	#gocryptfs -q -extpass="echo test" -nosyslog -memprofile /tmp/extractloop-mem "$CRYPT" "$MNT"
 fi
 echo "Test dir: $CRYPT"
 # Sleep to make sure the FS is already mounted on MNT
 sleep 1
-cd $MNT
+cd "$MNT"
 
-ln -v -sTf $CSV /tmp/extractloop.csv 2> /dev/null || true # fails on MacOS, ignore
+ln -v -sTf "$CSV" /tmp/extractloop.csv 2> /dev/null || true # fails on MacOS, ignore
 
 # Cleanup trap
 # Note: gocryptfs may have already umounted itself because bash relays SIGINT
 # Just ignore unmount errors.
 trap cleanup_exit EXIT
 
-function cleanup_exit {
+cleanup_exit() {
 	if [[ $FS == loopback ]]; then
 		# SIGUSR1 causes loopback to write the memory profile to disk
 		kill -USR1 $FSPID
 	fi
 	cd /
-	rm -Rf $CRYPT
-	fuse-unmount -z $MNT || true
-	rmdir $MNT
+	rm -Rf "$CRYPT"
+	fuse-unmount -z "$MNT" || true
+	rmdir "$MNT"
 }
 
-function loop {
+loop() {
 	ID=$1
-	mkdir $ID
-	cd $ID
+	mkdir "$ID"
+	cd "$ID"
 
 	echo "[looper $ID] Starting"
 
@@ -107,20 +107,20 @@ function loop {
 		tar xf /tmp/linux-3.0.tar.gz --exclude linux-3.0/arch/microblaze/boot/dts/system.dts
 		#                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 		# Exclude the one symlink in the tarball - causes problems on MacOS: "Can't set permissions to 0755"
-		check_md5sums $MD5
+		check_md5sums "$MD5"
 		rm -R linux-3.0
 		t2=$SECONDS
 		delta=$((t2-t1))
 		if [[ $FSPID -gt 0 && -d /proc ]]; then
 			RSS=$(grep VmRSS /proc/$FSPID/status | tr -s ' ' | cut -f2 -d ' ')
-			echo "$N,$SECONDS,$RSS,$delta" >> $CSV
+			echo "$N,$SECONDS,$RSS,$delta" >> "$CSV"
 		fi
 		echo "[looper $ID] Iteration $N done, $delta seconds, RSS $RSS kiB"
-		let N=$N+1
+		N=$((N+1))
 	done
 }
 
-function memprof {
+memprof() {
 	while true; do
 		kill -USR1 $FSPID
 		sleep 60
diff --git a/tests/stress_tests/fsstress-gocryptfs.bash b/tests/stress_tests/fsstress-gocryptfs.bash
index a7aa811..08cdd45 100755
--- a/tests/stress_tests/fsstress-gocryptfs.bash
+++ b/tests/stress_tests/fsstress-gocryptfs.bash
@@ -19,7 +19,7 @@ export TMPDIR=${TMPDIR:-/var/tmp}
 DEBUG=${DEBUG:-0}
 
 cd "$(dirname "$0")"
-MYNAME=$(basename $0)
+MYNAME=$(basename "$0")
 source ../fuse-unmount.bash
 
 # fsstress binary
@@ -32,23 +32,23 @@ then
 fi
 
 # Backing directory
-DIR=$(mktemp -d $TMPDIR/$MYNAME.XXX)
+DIR=$(mktemp -d "$TMPDIR/$MYNAME.XXX")
 # Mountpoint
 MNT="$DIR.mnt"
-mkdir $MNT
+mkdir "$MNT"
 
 # Set the GOPATH variable to the default if it is empty
 GOPATH=$(go env GOPATH)
 
 # Clean up old mounts
-for i in $(mount | cut -d" " -f3 | grep $TMPDIR/$MYNAME) ; do
-	fusermount -u $i
+for i in $(mount | cut -d" " -f3 | grep "$TMPDIR/$MYNAME") ; do
+	fusermount -u "$i"
 done
 
 # FS-specific compile and mount
 if [[ $MYNAME = fsstress-loopback.bash ]]; then
 	echo -n "Recompile go-fuse loopback: "
-	cd $GOPATH/src/github.com/hanwen/go-fuse/example/loopback
+	cd "$GOPATH/src/github.com/hanwen/go-fuse/example/loopback"
 	git describe
 	go build && go install
 	OPTS="-q"
@@ -59,20 +59,20 @@ if [[ $MYNAME = fsstress-loopback.bash ]]; then
 	disown
 elif [[ $MYNAME = fsstress-gocryptfs.bash ]]; then
 	echo "Recompile gocryptfs"
-	cd $GOPATH/src/github.com/rfjakob/gocryptfs
+	cd "$GOPATH/src/github.com/rfjakob/gocryptfs"
 	./build.bash # also prints the version
-	$GOPATH/bin/gocryptfs -q -init -extpass "echo test" -scryptn=10 $DIR
-	$GOPATH/bin/gocryptfs -q -extpass "echo test" -nosyslog -fusedebug=$DEBUG $DIR $MNT
+	$GOPATH/bin/gocryptfs -q -init -extpass "echo test" -scryptn=10 "$DIR"
+	$GOPATH/bin/gocryptfs -q -extpass "echo test" -nosyslog -fusedebug="$DEBUG" "$DIR" "$MNT"
 elif [[ $MYNAME = fsstress-encfs.bash ]]; then
-	encfs --extpass "echo test" --standard $DIR $MNT
+	encfs --extpass "echo test" --standard "$DIR" "$MNT"
 else
-	echo Unknown mode: $MYNAME
+	echo "Unknown mode: $MYNAME"
 	exit 1
 fi
 
 sleep 0.5
 echo -n "Waiting for mount: "
-while ! grep "$(basename $MNT) fuse" /proc/self/mounts > /dev/null
+while ! grep "$(basename "$MNT") fuse" /proc/self/mounts > /dev/null
 do
 	sleep 1
 	echo -n x
@@ -87,26 +87,26 @@ N=1
 while true
 do
 	echo "$N ................................. $(date)"
-	mkdir $MNT/fsstress.1
+	mkdir "$MNT/fsstress.1"
 	echo -n "    fsstress.1 "
-	$FSSTRESS -r -m 8 -n 1000 -d $MNT/fsstress.1 &
+	$FSSTRESS -r -m 8 -n 1000 -d "$MNT/fsstress.1" &
 	wait
 
-	mkdir $MNT/fsstress.2
+	mkdir "$MNT/fsstress.2"
 	echo -n "    fsstress.2 "
-	$FSSTRESS -p 20 -r -m 8 -n 1000 -d $MNT/fsstress.2 &
+	$FSSTRESS -p 20 -r -m 8 -n 1000 -d "$MNT/fsstress.2" &
 	wait
 
-	mkdir $MNT/fsstress.3
+	mkdir "$MNT/fsstress.3"
 	echo -n "    fsstress.3 "
 	$FSSTRESS -p 4 -z -f rmdir=10 -f link=10 -f creat=10 -f mkdir=10 \
 		-f rename=30 -f stat=30 -f unlink=30 -f truncate=20 -m 8 \
-		-n 1000 -d $MNT/fsstress.3 &
+		-n 1000 -d "$MNT/fsstress.3" &
 	wait
 
 	echo "    rm"
-	rm -Rf $MNT/*
+	rm -Rf "$MNT"/*
 
-	let N=$N+1
+	N=$((N+1))
 done
 
diff --git a/tests/stress_tests/parallel_cp.sh b/tests/stress_tests/parallel_cp.sh
index ad98e5e..cd08d31 100755
--- a/tests/stress_tests/parallel_cp.sh
+++ b/tests/stress_tests/parallel_cp.sh
@@ -18,32 +18,32 @@ if [[ -z $TMPDIR ]]; then
 fi
 
 cd "$(dirname "$0")"
-MYNAME=$(basename $0)
+MYNAME=$(basename "$0")
 source ../fuse-unmount.bash
 
 # Set the GOPATH variable to the default if it is empty
 GOPATH=$(go env GOPATH)
 
 # Backing directory
-DIR=$(mktemp -d $TMPDIR/$MYNAME.XXX)
-$GOPATH/bin/gocryptfs -q -init -extpass "echo test" -scryptn=10 $DIR
+DIR=$(mktemp -d "$TMPDIR/$MYNAME.XXX")
+$GOPATH/bin/gocryptfs -q -init -extpass "echo test" -scryptn=10 "$DIR"
 
 # Mountpoint
 MNT="$DIR.mnt"
-mkdir $MNT
-$GOPATH/bin/gocryptfs -q -extpass "echo test" -nosyslog $DIR $MNT
+mkdir "$MNT"
+$GOPATH/bin/gocryptfs -q -extpass "echo test" -nosyslog "$DIR" "$MNT"
 echo "Mounted gocryptfs $DIR at $MNT"
 
 # Cleanup trap
 trap "cd / ; fuse-unmount -z $MNT ; rm -rf $DIR $MNT" EXIT
 
-cd $MNT
+cd "$MNT"
 
 SECONDS=0
 echo "creating files with dd"
 mkdir -p origin
 for i in $(seq 1 778) ; do
-	dd if=/dev/zero of=origin/file_$i bs=8192 count=1 status=none
+	dd if=/dev/zero of="origin/file_$i" bs=8192 count=1 status=none
 done
 # Perform the shell expansion only once and store the list
 ORIGIN_FILES=origin/*
@@ -51,7 +51,7 @@ ORIGIN_FILES=origin/*
 echo -n "cp starting: "
 for i in $(seq 1 100) ; do
 	echo -n "$i "
-	(mkdir sub_$i && cp $ORIGIN_FILES sub_$i ; echo -n "$i ") &
+	(mkdir "sub_$i" && cp $ORIGIN_FILES "sub_$i" ; echo -n "$i ") &
 done
 
 echo
diff --git a/tests/stress_tests/pingpong.bash b/tests/stress_tests/pingpong.bash
index 218b6e8..4b8346e 100755
--- a/tests/stress_tests/pingpong.bash
+++ b/tests/stress_tests/pingpong.bash
@@ -13,7 +13,7 @@ renice 19 $$
 
 cd "$(dirname "$0")"
 MD5="$PWD/linux-3.0.md5sums"
-MYNAME=$(basename $0)
+MYNAME=$(basename "$0")
 source ../fuse-unmount.bash
 
 # Setup
@@ -22,48 +22,48 @@ cd /tmp
 
 PING=$(mktemp -d ping.XXX)
 PONG=$(mktemp -d pong.XXX)
-mkdir $PING.mnt $PONG.mnt
+mkdir "$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 $PONG
+gocryptfs -q -init -extpass="echo test" -scryptn=10 "$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 $PONG.mnt
+gocryptfs -q -extpass="echo test" -nosyslog "$PING" "$PING.mnt"
+gocryptfs -q -extpass="echo test" -nosyslog "$PONG" "$PONG.mnt"
 
 echo "Initial extract"
-tar xf /tmp/linux-3.0.tar.gz -C $PING.mnt
+tar xf /tmp/linux-3.0.tar.gz -C "$PING.mnt"
 
-function move_and_md5 {
-	if [ $MYNAME = pingpong-rsync.bash ]; then
+move_and_md5() {
+	if [ "$MYNAME" = "pingpong-rsync.bash" ]; then
 		echo -n "rsync "
-		rsync -a --remove-source-files $1 $2
-		find $1 -type d -delete
+		rsync -a --remove-source-files "$1" "$2"
+		find "$1" -type d -delete
 	else
 		echo -n "mv "
-		mv $1 $2
+		mv "$1" "$2"
 	fi
-	if [ -e $1 ]; then
+	if [ -e "$1" ]; then
 		echo "error: source directory $1 was not removed"
 		exit 1
 	fi
-	cd $2
+	cd "$2"
 	echo -n "md5 "
-	md5sum --status -c $MD5
+	md5sum --status -c "$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 $PING.mnt
+	move_and_md5 "$PING.mnt/linux-3.0" "$PONG.mnt"
+	move_and_md5 "$PONG.mnt/linux-3.0" "$PING.mnt"
 	date +%H:%M:%S
-	let N=$N+1
+	N=$((N+1))
 done
 
 wait