Don't busyloop when fifo file is missing

2023-12-26 00:16:02 +01:00 · 2023-12-26 00:16:02 +01:00 · 868e492014
parent ab941d3770
commit 868e492014
1 changed files with 5 additions and 0 deletions
--- a/nix/pkgs/openwrt/usteer-stats.sh
+++ b/nix/pkgs/openwrt/usteer-stats.sh
@ -6,6 +6,11 @@ INTERVAL=60
 [ -p /tmp/usteer-info ] || mkfifo /tmp/usteer-info

 while true; do
+    if [ ! -p /tmp/usteer-info ]; then
+      echo "/tmp/usteer-info went missing!"
+      exit 1
+    fi
+
    DATA="$(cat /tmp/usteer-info)"
    cd /sys/class/net
    for iface in wlan*; do