result_t execute() {
if (!sandbox_check(&sandbox)) {
fprintf(stderr, "sandbox pre-execution state check failed\n");
exit(EX_DATAERR);
}
return *sandbox_execute(&sandbox);
}
result_t *
sandbox_execute(sandbox_t * psbox)
{
FUNC_BEGIN("sandbox_execute(%p)", psbox);
assert(psbox);
if (psbox == NULL)
{
WARNING("psbox: bad pointer");
FUNC_RET(NULL, "sandbox_execute()");
}
if (!sandbox_check(psbox))
{
WARNING("sandbox pre-execution state check failed");
FUNC_RET(&psbox->result, "sandbox_execute()");
}
#ifdef WITH_CUSTOM_MONITOR
pthread_t tid;
if (pthread_create(&tid, NULL, psbox->ctrl.monitor, (void *)psbox) != 0)
{
WARNING("failed creating the monitor thread");
FUNC_RET(&psbox->result, "sandbox_execute()");
}
DBG("created the monitor thread");
#endif /* WITH_CUSTOM_MONITOR */
/* Fork the prisoner process */
psbox->ctrl.pid = fork();
/* Execute the prisoner program */
if (psbox->ctrl.pid == 0)
{
DBG("entering: the prisoner program");
/* Start executing the prisoner program */
_exit(__sandbox_task_execute(&psbox->task));
}
else
{
DBG("target program forked as pid %d", psbox->ctrl.pid);
/* Start executing the tracing thread */
psbox->ctrl.tracer(psbox);
}
#ifdef WITH_CUSTOM_MONITOR
if (pthread_join(tid, NULL) != 0)
{
WARNING("failed joining the monitor thread");
if (pthread_cancel(tid) != 0)
{
WARNING("failed canceling the monitor thread");
FUNC_RET(NULL, "sandbox_execute()");
}
}
DBG("joined the monitor thread");
#endif /* WITH_CUSTOM_MONITOR */
FUNC_RET(&psbox->result, "sandbox_execute()");
}
