Fix missing head command

2026-06-14 08:23:52 +00:00
parent cada9520be
commit cbd92baae7
3 changed files with 22 additions and 3 deletions
@@ -17,8 +17,15 @@ mkdir -p /run/dot1x /run/wpa_supplicant

 # --- knobs (override on the kernel cmdline) ---------------------------------
 NIC=$(getarg rd.dot1x.if=)
-# shellcheck disable=SC2010  # /sys/class/net names are kernel ifnames; ls|grep is safe here
-[ -n "$NIC" ] || NIC=$(ls /sys/class/net | grep -vE '^(lo|macsec)' | head -1)
+if [ -z "$NIC" ]; then
+    # First non-loopback, non-macsec interface. Pure shell — ls/grep/head are
+    # not guaranteed to exist in the initramfs.
+    for _dev in /sys/class/net/*; do
+        _name=${_dev##*/}
+        case "$_name" in lo|macsec*) continue ;; esac
+        NIC=$_name; break
+    done
+fi
 NVINDEX=$(getarg rd.dot1x.nvindex=); [ -n "$NVINDEX" ] || NVINDEX=0x01800001
 TIMEOUT=$(getarg rd.dot1x.timeout=); [ -n "$TIMEOUT" ] || TIMEOUT=60