What were you trying to do that didn't work?

Trying to execute the following command, it doesn't return but spins on the CPU:

# ipsec stop --help

This happens for other commands which are aliases of setup command, i.e. restart and start.

Root cause for this is the argument parsing is not correct: using "--help" only works if cmd variable was not set previously, which is not true when the command is an alias:

550         restart|--restart)
551             cmd="setup"
552             setupoption="--restart"
553             shift
554             ;;
555         help|--help)
556             # if cmd is unset, this is help for ipsec command
557             if [ -z "${cmd}" ]; then
558                 ipsec_help
559             fi
560             ;; 

Here above, executing "ipsec restart -help" leads to setting cmd, which makes the next argument ("-help")  loop on block 555 because cmd is already set.

Please provide the package NVR for which bug is seen:

libreswan-4.9-3.el8_8.x86_64

libreswan-4.9-4.el9_2.x86_64

How reproducible:

Always

Steps to reproduce

See above

Expected results

Usage

Actual results

Spins on CPU