Factorizing loops on removable/non-removable devices.

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

diff --git a/scripts/live-helpers b/scripts/live-helpers
index 7f8649f..73d9f9d 100644 (file)
--- a/scripts/live-helpers
+++ b/scripts/live-helpers
@@ -488,3 +488,73 @@ is_luks()
     fi
 
 }
+
+removable_dev ()
+{
+       output_format="${1}"
+       want_usb="${2}"
+       ret=
+
+       for sysblock in $(echo /sys/block/* | tr ' ' '\n' | grep -vE "/(loop|ram|dm-|fd)")
+       do
+               dev_ok=
+               if [ "$(cat ${sysblock}/removable)" = "1" ]
+               then
+                       if [ -z "${want_usb}" ]
+                       then
+                               dev_ok="yes"
+                       else
+                               if readlink ${sysblock} | grep -q usb
+                               then
+                                       dev_ok="yes"
+                               fi
+                       fi
+               fi
+
+               if [ "${dev_ok}" = "yes" ]
+               then
+                       case "${output_format}" in
+                               sys)
+                                       ret="${ret} ${sysblock}"
+                                       ;;
+                               *)
+                                       devname=$(sys2dev "${sysblock}")
+                                       ret="${ret} ${devname}"
+                                       ;;
+                       esac
+               fi
+       done
+
+       echo "${ret}"
+}
+
+removable_usb_dev ()
+{
+       output_format="${1}"
+
+       removable_dev "${output_format}" "want_usb"
+}
+
+non_removable_dev ()
+{
+       output_format="${1}"
+       ret=
+
+       for sysblock in $(echo /sys/block/* | tr ' ' '\n' | grep -vE "/(loop|ram|dm-|fd)")
+       do
+               if [ "$(cat ${sysblock}/removable)" = "0" ]
+               then
+                       case "${output_format}" in
+                               sys)
+                                       ret="${ret} ${sysblock}"
+                                       ;;
+                               *)
+                                       devname=$(sys2dev "${sysblock}")
+                                       ret="${ret} ${devname}"
+                                       ;;
+                       esac
+               fi
+       done
+
+       echo "${ret}"
+}