X-Git-Url: http://git.grml.org/?a=blobdiff_plain;f=scripts%2Flive;h=56c0a1413cdea47a7ba63d4dadcd8db2f6e04e1b;hb=be6b1ff8961f46a2bf51811bdd536c3d90239027;hp=5d5b978c892052c507d95f011bbf16c0250e2311;hpb=294e55d92faeab52245d6126003754e6e0c05df0;p=live-boot-grml.git

diff --git a/scripts/live b/scripts/live
index 5d5b978..56c0a14 100755
--- a/scripts/live
+++ b/scripts/live
@@ -944,7 +944,7 @@ try_snap ()
 	snap_mount="${2}"
 	snap_type="${3}"
 
-	if [ ! -z "${snapdata}" ]
+	if [ -n "${snapdata}" ] && [ ! -b "${snapdata}" ]
 	then
 		log_success_msg "found snapshot: ${snapdata}"
 		snapdev="$(echo ${snapdata} | cut -f1 -d ' ')"
@@ -1401,13 +1401,52 @@ find_livefs ()
 	fi
 
 	# first look at the one specified in the command line
-	if [ ! -z "${LIVE_MEDIA}" ]
-	then
-		if check_dev "null" "${LIVE_MEDIA}" "skip_uuid_check"
-		then
-			return 0
-		fi
-	fi
+	case "${LIVE_MEDIA}" in
+		removable-usb)
+			for sysblock in $(echo /sys/block/* | tr ' ' '\n' | grep -vE "/(loop|ram|dm-|fd)")
+			do
+				if [ "$(cat ${sysblock}/removable)" = "1" ]
+				then
+					if readlink ${sysblock}/device | grep -q usb
+					then
+						for dev in $(subdevices "${sysblock}")
+						do
+							if check_dev "${dev}"
+							then
+								return 0
+							fi
+						done
+					fi
+				fi
+			done
+			;;
+
+		removable)
+			for sysblock in $(echo /sys/block/* | tr ' ' '\n' | grep -vE "/(loop|ram|dm-|fd)")
+			do
+				if [ "$(cat ${sysblock}/removable)" = "1" ]
+				then
+					for dev in $(subdevices "${sysblock}")
+					do
+						if check_dev "${dev}"
+						then
+							return 0
+						fi
+					done
+				fi
+			done
+			;;
+
+		*)
+			if [ ! -z "${LIVE_MEDIA}" ]
+			then
+				if check_dev "null" "${LIVE_MEDIA}" "skip_uuid_check"
+				then
+					return 0
+				fi
+			fi
+			;;
+	esac
 
 	# or do the scan of block devices
 	for sysblock in $(echo /sys/block/* | tr ' ' '\n' | grep -vE "/(loop|ram|dm-|fd)")