improve grf

gluster/grf

 #!/bin/sh
 
+LOCKFILE=$0.lock
+test -r $LOCKFILE && echo "Already running..." && exit
+touch $LOCKFILE
+
 # Проверяет указанный файл на наличие в возможных местах размещения
 
 fatal()
 {
     echo "FATAL: $@" >&2
+    rm -f $LOCKFILE
     exit 1
 }
 
@@ -28,6 +33,7 @@ umount_g()
         umount -v "$MOUNTDIR/$host/$path"
         rmdir "$MOUNTDIR/$host/$path"
     done
+    rm -f $LOCKFILE
 }
 
 mount_g()
@@ -115,6 +121,7 @@ if [ "$1" = "--list" ] ; then
     sfile=$(cat "$uselist" | grep ^/ | head -n1)
     if [ -z "$sfile" ] ; then
         echo "Skip empty file $uselist"
+        rm -f $LOCKFILE
         exit 0
     fi
 fi
@@ -182,7 +189,7 @@ fi
 get_pgf_name()
 {
 	local rfile="$1"
-	echo ".glusterfs/$(echo $rfile | cut -b1-2)/$(echo $rfile | cut -b3-4)/$rfile"
+	echo ".glusterfs/$(echo "$rfile" | cut -b1-2)/$(echo "$rfile" | cut -b3-4)/$rfile"
 }
 
 tr_gfid_to_rpath()
@@ -200,8 +207,8 @@ tr_gfid_to_rpath()
 		# hack: translate to a path on volume
 		file="$(echo "$sfile" | sed -e "s|$FTPROOT/||g")"
 
-		rfile=$(echo $file | sed -e "s|<gfid:||g" | sed -e "s|[<>]||g")
-		rfile=$(get_pgf_name $rfile)
+		rfile=$(echo "$file" | sed -e "s|<gfid:||g" | sed -e "s|[<>]||g")
+		rfile=$(get_pgf_name "$rfile")
 		rpath=$path
 		rfile=$(opbrick "realpath" "$rfile") && break
 	done
@@ -468,7 +475,7 @@ if [ -n "$uselist" ] ; then
     done
 else
     # TODO: use find?
-    for sf in $sfile ; do
+    for sf in "$sfile" ; do
         test_file "$sf"
     done
 fi