[build] Fail gracefully when no input files are given to genfsimg

Signed-off-by: Michael Brown <mcb30@ipxe.org>
2021-01-22 18:29:01 +00:00 · 2021-01-22 18:29:01 +00:00 · 34f51a0dca
parent 05d7591a71
commit 34f51a0dca
1 changed files with 5 additions and 0 deletions
--- a/src/util/genfsimg
+++ b/src/util/genfsimg
@ -137,6 +137,11 @@ if [ -z "${OUTFILE}" ]; then
    exit 1
 fi
 shift $(( OPTIND - 1 ))
+if [ $# -eq 0 ] ; then
+    echo "${0}: no input files given" >&2
+    help
+    exit 1
+fi

 # Create temporary working directory
 #