Adding casper 1.81+debian-2.

[live-boot-grml.git] / scripts / casper-helpers

diff --git a/scripts/casper-helpers b/scripts/casper-helpers
index cfbc3c6..17f7d62 100644 (file)
--- a/scripts/casper-helpers
+++ b/scripts/casper-helpers
@@ -1,9 +1,11 @@
 ## Casper helper functions, used by casper on boot and by casper-snapshot
 
-if [ "${BUILD_SYSTEM}" == "Ubuntu" ]; then
+if [ "${BUILD_SYSTEM}" = "Ubuntu" ]; then
     MP_QUIET="-Q"
-else
+elif [ "${BUILD_SYSTEM}" = "Debian" ]; then
     MP_QUIET="-q"
+else
+    MP_QUIET=""
 fi
 
 if [ ! -x "/bin/fstype" ]; then
@@ -110,14 +112,44 @@ setup_loop() {
     local fspath=$1
     local module=$2
     local pattern=$3
+    local offset=$4
+    local encryption=$5
 
-    modprobe "${MP_QUIET}" -b "$module"
+    modprobe ${MP_QUIET} -b "$module"
     udevsettle
 
     for loopdev in $pattern; do
         if [ "$(cat $loopdev/size)" -eq 0 ]; then
             dev=$(sys2dev "${loopdev}")
-            losetup "$dev" "$fspath"
+            options=''
+            if [ 0 -lt "${offset}" ]; then
+                options="${options} -o ${offset}"
+            fi
+            if [ -z "${encryption}" ]; then
+                losetup ${options} "${dev}" "${fspath}"
+            else
+                # Loop AES encryption
+                while true; do
+                    echo -n "Enter passphrase for ${fspath}: " >&6
+                    read -s passphrase
+                    echo "${passphrase}" > /tmp/passphrase
+                    exec 9</tmp/passphrase
+                    /sbin/losetup ${options} -e "${encryption}" -p 9 "${dev}" "${fspath}"
+                    error=$?
+                    exec 9<&-
+                    rm -f /tmp/passphrase
+                    if [ 0 -eq ${error} ]; then
+                        unset error
+                        break
+                    fi
+                    echo -n "Something went wrong... Retry? [YES/no] " >&6
+                    read answer
+                    if [ 'no' = "${answer}" ]; then
+                        unset answer
+                        break
+                    fi
+                done
+            fi
             echo "$dev"
             return 0
         fi