1 files changed, 52 insertions, 0 deletions
diff --git a/functions/losetup.sh b/functions/losetup.sh
new file mode 100755
index 000000000..1b1f61f42
--- /dev/null
+++ b/functions/losetup.sh
@@ -0,0 +1,52 @@
+#!/bin/sh
+
+# losetup - wrapper around losetup
+# Copyright (C) 2006-2009 Daniel Baumann <daniel@debian.org>
+#
+# live-helper comes with ABSOLUTELY NO WARRANTY; for details see COPYING.
+# This is free software, and you are welcome to redistribute it
+# under certain conditions; see COPYING for details.
+
+Losetup ()
+{
+	DEVICE="${1}"
+	FILE="${2}"
+	PARTITION="${3:-1}"
+
+	${LH_ROOT_COMMAND} ${LH_LOSETUP} "${DEVICE}" "${FILE}"
+	FDISK_OUT="$(${LH_FDISK} -l -u ${DEVICE} 2>&1)"
+	${LH_ROOT_COMMAND} ${LH_LOSETUP} -d "${DEVICE}"
+
+	LOOPDEVICE="$(echo ${DEVICE}p${PARTITION})"
+
+	if [ "${PARTITION}" = "0" ]
+	then
+		Echo_message "Mounting %s with offset 0" "${DEVICE}"
+
+		${LH_ROOT_COMMAND} ${LH_LOSETUP} "${DEVICE}" "${FILE}"
+	else
+		SECTORS="$(echo "$FDISK_OUT" | sed -ne "s|^$LOOPDEVICE[ *]*\([0-9]*\).*|\1|p")"
+		OFFSET="$(expr ${SECTORS} '*' 512)"
+
+		Echo_message "Mounting %s with offset %s" "${DEVICE}" "${OFFSET}"
+
+		${LH_ROOT_COMMAND} ${LH_LOSETUP} -o "${OFFSET}" "${DEVICE}" "${FILE}"
+	fi
+}
+
+Calculate_partition_size ()
+{
+	ORIGINAL_SIZE="${1}"
+	FILESYSTEM="${2}"
+
+	case "${FILESYSTEM}" in
+		ext2|ext3)
+			PERCENT="5"
+			;;
+		*)
+			PERCENT="3"
+			;;
+	esac
+
+	echo $(expr ${ORIGINAL_SIZE} + ${ORIGINAL_SIZE} \* ${PERCENT} / 100 + 1)
+}