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#!/bin/bash
# Wrapper script to handle the real vmchooser-run_virt
launch_runvirt() {
if [ $# -ne 1 ]; then
# we except 1 arg only! This case is weird, so lets just not do weird things...
log "Runvirt (wrapper) expects 1 argument! $# given: $@"
return 1
fi
local RUNVIRT_SCRIPT="/opt/openslx/vmchooser/vmchooser-run_virt"
if [ ! -s "${RUNVIRT_SCRIPT}" ]; then
log "Missing/empty main run-virt script expected at '${RUNVIRT_SCRIPT}'!"
return 1
fi
if ! bash -n "${RUNVIRT_SCRIPT}"; then
log "Syntax error in '${RUNVIRT_SCRIPT}'!"
return 1
fi
# start the main runvirt script
"${RUNVIRT_SCRIPT}" "$1" "${LOGFILE}" &
local RUNVIRT_PID="$!"
usleep 50000
# from now on, check if the LOGFILE still exists before writing to it
# if its not, runvirt deleted it and handles the logfile on its own
if ! kill -0 "${RUNVIRT_PID}"; then
[ -f "${LOGFILE}" ] && log "Failed to start main runvirt script. Seems that it exited early?."
return 1
fi
wait "${RUNVIRT_PID}"
# script exited here, check for exit code and send logfile to sat if appropriate
local RUNVIRT_RET="$?"
if [ ${RUNVIRT_RET} -ne 0 ]; then
if [ ${RUNVIRT_RET} -eq 141 ]; then
# 141 happens on alt + print screen + k or upon automatic logout via systemd
# just sleep here to avoid these annoying (and misleading) slxlogs....
sleep 3
fi
[ -f "${LOGFILE}" ] && log "Runvirt failed with '${RUNVIRT_RET}'."
return 1
fi
return 0
}
# Log helper
log() {
echo "$(date +%Y-%m-%d-%H-%M-%S): ## WRAPPER ## $@" >> "${LOGFILE}"
}
## Main part
# logfile is now managed by this wrapper and given as argument to runvirt
declare -rg LOGFILE="/var/log/openslx/run-virt.$(whoami).$$.log"
if ! touch "${LOGFILE}"; then
# this should practically never happen, log it just in case
slxlog "run-virt-wrapper" "Failed to create '${LOGFILE}'."
# fallback: runvirt will try to handle it itself
fi
log "Launching runvirt with arguments '$@'..."
if ! launch_runvirt $@; then
[ -f "${LOGFILE}" ] && slxlog "run-virt-wrapper" "Failed to launch runvirt!" "${LOGFILE}"
exit 1
fi
log "Runvirt exited as expected."
exit 0
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