From 1ad8a39de9ba2999e465a408011370dcd811dbb8 Mon Sep 17 00:00:00 2001
From: Erich Eckner <git@eckner.net>
Date: Thu, 18 Apr 2019 11:25:17 +0200
Subject: skip already (un)mounted devices

---
 mount-crypts | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/mount-crypts b/mount-crypts
index e1efc50..08b1975 100755
--- a/mount-crypts
+++ b/mount-crypts
@@ -5,6 +5,7 @@ maxWait=60
 
 while [ $i -le $(sed "s/#.*$//" /etc/crypttab | grep -vc '^ *$') ]; do
   s="$(sed "s/#.*$//" /etc/crypttab | grep -v '^ *$' | tail -n$i | head -n1 | sed "s/  */ /g")"
+  i=$((i+1))
   name=$(echo $s | awk '{print $1}')
   device=$(echo $s | awk '{print $2}')
   key=$(echo $s | awk '{print $3}')
@@ -12,16 +13,26 @@ while [ $i -le $(sed "s/#.*$//" /etc/crypttab | grep -vc '^ *$') ]; do
     sleep 1
     maxWait=$[${maxWait}-1]
   done
+  if cryptsetup status "${name}" 2>&1 >/dev/null; then
+    is_mounted=true
+  else
+    is_mounted=false
+  fi
   if [ "$1" == "-u" ]; then
+    if ! ${is_mounted}; then
+      continue
+    fi
     if ! /usr/sbin/cryptsetup luksClose "${name}"; then
       >&2 echo "FEHLER: cryptsetup luksClose $name"
       exit 1
     fi
   else
+    if ${is_mounted}; then
+      continue
+    fi
     if ! /usr/sbin/cryptsetup luksOpen "${device}" "${name}" --key-file "${key}"; then
       >&2 echo "FEHLER: cryptsetup luksOpen ${device} ${name} --key-file ${key}"
       exit 1
     fi
   fi
-  i=$((i+1))
 done
-- 
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