use sudo for unmounting

diff --git a/liveboot_build.sh b/liveboot_build.sh
index 767f16ca8d2b705b87db3960b833a09080f36f23..b9a9162e8104b73293060e18bf816b8b21aa4ef2 100755 (executable)
--- a/liveboot_build.sh
+++ b/liveboot_build.sh
@@ -9,10 +9,10 @@ set_failure() {
        # cleanup mount points
        cd /var/cache/pbuilder/build
        echo "My PID: $$"
-       umount -l $$/proc || true
-       umount -l $$/dev || true
-       umount -l $$/dev/pts || true
-       umount -l $$/srv/build || true
+       sudo umount -l $$/proc || true
+       sudo umount -l $$/dev || true
+       sudo umount -l $$/dev/pts || true
+       sudo umount -l $$/srv/build || true
         exit 1
 }