Improve removable_dev() in 9990-misc-helpers.sh when /sys/block/ is empty

[live-boot-grml.git] / components / 9990-misc-helpers.sh

diff --git a/components/9990-misc-helpers.sh b/components/9990-misc-helpers.sh
index 1a06ccf..ee53b16 100755 (executable)
--- a/components/9990-misc-helpers.sh
+++ b/components/9990-misc-helpers.sh
@@ -1169,6 +1169,10 @@ removable_dev ()
 
        for sysblock in $(echo /sys/block/* | tr ' ' '\n' | grep -vE "/(loop|ram|dm-|fd)")
        do
+               if [ ! -d "${sysblock}" ]; then
+                       continue
+               fi
+
                dev_ok=
                if [ "$(cat ${sysblock}/removable)" = "1" ]
                then
@@ -1214,6 +1218,10 @@ non_removable_dev ()
 
        for sysblock in $(echo /sys/block/* | tr ' ' '\n' | grep -vE "/(loop|ram|dm-|fd)")
        do
+               if [ ! -d "${sysblock}" ]; then
+                       continue
+               fi
+
                if [ "$(cat ${sysblock}/removable)" = "0" ]
                then
                        case "${output_format}" in