Fix disabled-quota-root-xattr-heal.sh hook script

Fixing all shellchek warnings and POSIX incomapatibilities

Change-Id: I35772bfcf7344c6ed9bd2a7db300c8f58bd3b243
BUG: 1500649
Signed-off-by: Milan Zink <zeten30@gmail.com>

1 files changed, 76 insertions, 73 deletions

diff --git a/extras/hook-scripts/add-brick/post/disabled-quota-root-xattr-heal.sh b/extras/hook-scripts/add-brick/post/disabled-quota-root-xattr-heal.sh
index c371ef58b3e..ca17a903549 100755
--- a/extras/hook-scripts/add-brick/post/disabled-quota-root-xattr-heal.sh
+++ b/extras/hook-scripts/add-brick/post/disabled-quota-root-xattr-heal.sh
@@ -13,7 +13,7 @@
 
 QUOTA_LIMIT_XATTR="trusted.glusterfs.quota.limit-set"
 QUOTA_OBJECT_LIMIT_XATTR="trusted.glusterfs.quota.limit-objects"
-MOUNT_DIR=`mktemp -d -t ${0##*/}.XXXXXX`;
+MOUNT_DIR=$(mktemp -d -t "${0##*/}.XXXXXX");
 OPTSPEC="volname:,version:,gd-workdir:,volume-op:"
 PROGNAME="Quota-xattr-heal-add-brick"
 VOL_NAME=
@@ -23,120 +23,123 @@ GLUSTERD_WORKDIR=
 ENABLED_NAME_PREFIX="S28"
 ENABLED_NAME="Quota-root-xattr-heal.sh"
 
-THIS_SCRIPT=`echo $0 | awk -F'/' '{print $NF}'`
+THIS_SCRIPT=$(echo "${0}" | awk -F'/' '{print $NF}')
 
 cleanup_mountpoint ()
 {
-        umount -f $MOUNT_DIR;
-        if [ 0 -ne $? ]
-        then
-                return $?
-        fi
-
-        rmdir $MOUNT_DIR;
-        if [ 0 -ne $? ]
-        then
-                return $?
-        fi
+
+  if umount -f "${MOUNT_DIR}"; then
+    return $?
+  fi
+
+  if rmdir "${MOUNT_DIR}"; then
+    return $?
+  fi
 }
 
 disable_and_exit ()
 {
-        if [ -e "$ENABLED_STATE" ]
-        then
-                unlink $ENABLED_STATE;
-                exit $?
-        fi
+  if [ -e "${ENABLED_STATE}" ]
+  then
+    unlink "${ENABLED_STATE}";
+    exit $?
+  fi
 
-        exit 0
+  exit 0
 }
 
 get_and_set_xattr ()
 {
-        XATTR=$1
-
-        VALUE=$(getfattr -n $XATTR -e hex --absolute-names $MOUNT_DIR 2>&1)
-        RET=$?
-        if [ 0 -eq $RET ]; then
-                VALUE=$(echo $VALUE | grep $XATTR | awk -F'=' '{print $NF}')
-                setfattr -n $XATTR -v $VALUE $MOUNT_DIR;
-                RET=$?
-        else
-                echo $VALUE | grep -iq "No such attribute"
-                if [ 0 -eq $? ]; then
-                        RET=0
-                fi
-        fi
-
-        return $RET;
+  XATTR=$1
+
+  VALUE=$(getfattr -n "${XATTR}" -e hex --absolute-names "${MOUNT_DIR}" 2>&1)
+  RET=$?
+  if [ 0 -eq ${RET} ]; then
+    VALUE=$(echo "${VALUE}" | grep "${XATTR}" | awk -F'=' '{print $NF}')
+    setfattr -n "${XATTR}" -v "${VALUE}" "${MOUNT_DIR}";
+    RET=$?
+  else
+    if echo "${VALUE}" | grep -iq "No such attribute" ; then
+      RET=0
+    fi
+  fi
+
+  return ${RET};
 }
 
 ##------------------------------------------
 ## Parse the arguments
 ##------------------------------------------
-ARGS=$(getopt -o '' -l $OPTSPEC -n $PROGNAME -- "$@")
+ARGS=$(getopt -o '' -l ${OPTSPEC} -n ${PROGNAME} -- "$@")
 eval set -- "$ARGS"
 
 while true;
 do
-    case $1 in
-        --volname)
-            shift
-            VOL_NAME=$1
-            ;;
-        --version)
-            shift
-            VERSION=$1
-            ;;
-        --gd-workdir)
-            shift
-            GLUSTERD_WORKDIR=$1
-            ;;
-        --volume-op)
-            shift
-            VOLUME_OP=$1
-            ;;
-        *)
-            shift
-            break
-            ;;
-    esac
-    shift
+  case $1 in
+    --volname)
+      shift
+      VOL_NAME=$1
+    ;;
+    --version)
+      shift
+      VERSION=$1
+    ;;
+    --gd-workdir)
+      shift
+      GLUSTERD_WORKDIR=$1
+    ;;
+    --volume-op)
+      shift
+      VOLUME_OP=$1
+    ;;
+    *)
+      shift
+      break
+    ;;
+  esac
+  shift
 done
 ##----------------------------------------
 
-ENABLED_STATE="$GLUSTERD_WORKDIR/hooks/$VERSION/$VOLUME_OP/post/""$ENABLED_NAME_PREFIX$VOL_NAME""-""$ENABLED_NAME"
+# Avoid long lines
+ENABLED_STATE_1="${GLUSTERD_WORKDIR}/hooks/${VERSION}/${VOLUME_OP}/"
+ENABLED_STATE_2="post/${ENABLED_NAME_PREFIX}${VOL_NAME}-${ENABLED_NAME}"
+ENABLED_STATE="${ENABLED_STATE_1}${ENABLED_STATE_2}"
 
-if [[ $THIS_SCRIPT != *"$VOL_NAME"* ]]; then
-        exit 0
+if [ "${THIS_SCRIPT}" != *"${VOL_NAME}"* ]; then
+  exit 0
 fi
 
 ## Is quota enabled?
-FLAG=`grep "^features.quota=" $GLUSTERD_WORKDIR/vols/$VOL_NAME/info \
-      | awk -F'=' '{print $NF}'`;
-if [ "$FLAG" != "on" ]
+FLAG=$(grep "^features.quota=" "${GLUSTERD_WORKDIR}/vols/${VOL_NAME}/info" \
+| awk -F'=' '{print $NF}');
+if [ "${FLAG}" != "on" ]
 then
-        disable_and_exit
+  disable_and_exit
 fi
 
 ## -----------------------------------
 ## Mount the volume in temp directory.
 ## -----------------------------------
-glusterfs -s localhost --volfile-id=$VOL_NAME --client-pid=-42 $MOUNT_DIR;
-if [ 0 -ne $? ]
+# Avoid long lines
+CMD_1="glusterfs -s localhost"
+CMD_2="--volfile-id=${VOL_NAME} client-pid=-42 ${MOUNT_DIR}"
+CMD="${CMD_1}${CMD_2}"
+
+if ${CMD}
 then
-        exit $?;
+  exit $?;
 fi
 ## -----------------------------------
 
-RET1=$(get_and_set_xattr $QUOTA_LIMIT_XATTR)
-RET2=$(get_and_set_xattr $QUOTA_OBJECT_LIMIT_XATTR)
+RET1=$(get_and_set_xattr "${QUOTA_LIMIT_XATTR}")
+RET2=$(get_and_set_xattr "${QUOTA_OBJECT_LIMIT_XATTR}")
 
 ## Clean up and exit
 cleanup_mountpoint;
 
-if [ $RET1 -ne 0 -o $RET2 -ne 0 ]; then
-        exit 1
+if [ "${RET1}" -ne 0 ] || [ "${RET2}" -ne 0 ]; then
+  exit 1
 fi
 
 disable_and_exit;