add eterbackup functions

backup/eterbackup-functions

+#!/bin/sh
+
+fatal()
+{
+    echo "$*" >&2
+    exit 1
+}
+
+mount_remote()
+{
+
+    [ -n "$BACKUPDIR" ] || BACKUPDIR=/mnt/hetzner-storage
+    mkdir -p $BACKUPDIR || fatal
+
+    [ -n "$BASETARGET" ] || BASETARGET="$(hostname -s)"
+
+    mkdir -p $BACKUPDIR/$BASETARGET/ || fatal
+
+    # skip if already mounted
+    [ -r $BACKUPDIR/MARKFILE ] && return
+
+    epm assure eterpack eterbackup || fatal
+    epm assure /sbin/mount.cifs cifs-utils || fatal
+    [ -n "$CREDFILE" ] || CREDFILE=/root/.cifs
+    . $CREDFILE
+    unset password
+
+    mount -t cifs //$username.your-storagebox.de/backup $BACKUPDIR -ocredentials=$CREDFILE || fatal
+}
+
+# args: abs_dir_from [target_name] [depth] [args]
+classic_eterbackup()
+{
+    local FROM="$1"
+    [ -d "$FROM" ] || fatal "Missed source dir $FROM"
+    local PARTNAME="$2"
+    [ -n "$PARTNAME" ] || PARTNAME="$(basename "$FROM")"
+    local DEPTH="$3"
+    [ -n "$DEPTH" ] || DEPTH=1
+    shift 3
+
+    nice eterpack update --depth $DEPTH "$@" $FROM $BACKUPDIR/$BASETARGET/$PARTNAME
+}
+
+umount_remote()
+{
+    [ -n "$SKIPUMOUNT" ] || umount $BACKUPDIR || fatal
+}
+
+SKIPUMOUNT=''
+[ "$1" = "--skip-umount" ] && SKIPUMOUNT="$1" && shift
+
+if [ "$1" = "--mount-only" ] ; then
+    mount_remote
+    exit
+fi