From 990480f58dde1722f8ab87514b4443c1ea418b85 Mon Sep 17 00:00:00 2001
From: Marco Amadori <marco.amadori@gmail.com>
Date: Sat, 27 Sep 2008 11:18:15 +0200
Subject: Search for partition labels only (Closes: #486469).

* Added new way to call "persistent" at boot:
  "persistent=nofiles" will skip the scan for image files in block
  device and it will only search for partition labels.
---
 scripts/live         | 17 ++++++++++++++++-
 scripts/live-helpers |  7 +++++++
 2 files changed, 23 insertions(+), 1 deletion(-)

(limited to 'scripts')

diff --git a/scripts/live b/scripts/live
index 7e0b100..8761138 100755
--- a/scripts/live
+++ b/scripts/live
@@ -326,6 +326,15 @@ Arguments ()
 				export PERSISTENT
 				;;
 
+			persistent=*)
+				PERSISTENT="${ARGUMENT#persistent=}"
+				if [ -z "${PERSISTENT}" ]
+				then
+					PERSISTENT="Yes"
+				fi
+				export PERSISTENT
+				;;
+
 			nopersistent)
 				NOPERSISTENT="Yes"
 				export NOPERSISTENT
@@ -881,7 +890,13 @@ find_snap ()
 {
 	# Look for ${snap_label}.* in block devices
 	snap_label="${1}"
-	snapdata=$(find_files "${snap_label}.squashfs ${snap_label}.cpio.gz ${snap_label}.ext2 ${snap_label}.ext3 ${snap_label}.jffs2")
+
+	if [ "${PERSISTENT}" != "nofiles" ]
+	then
+		# search for image files
+		snapdata=$(find_files "${snap_label}.squashfs ${snap_label}.cpio.gz ${snap_label}.ext2 ${snap_label}.ext3 ${snap_label}.jffs2")
+	fi
+
 	if [ -z "${snapdata}" ]
 	then
 		snapdata=$(find_cow_device "${snap_label}")
diff --git a/scripts/live-helpers b/scripts/live-helpers
index 44bb12a..a935001 100644
--- a/scripts/live-helpers
+++ b/scripts/live-helpers
@@ -313,6 +313,13 @@ find_cow_device ()
 				return
 			fi
 
+			if [ "${PERSISTENT}" = "nofiles" ]
+			then
+				# do not mount the device to find for image files
+				# just skip this
+				break
+			fi
+
 			case "$(get_fstype ${devname})" in
 				vfat|ext2|ext3|jffs2)
 					mkdir -p "${cow_backing}"
-- 
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