Add a daemon mode that is entered when no action was specified on the
command line. In this mode hwsim tracks information on radios through
the netlink events. The interface to make use of the information is
added in the next patch.
killall doesn't wait for the iwd process to clean up, so using it is not
enough when cleaning up between tests.
Using killall -w also doesn't work since iwd is launched by the script.
By the time killall is invoked, the script process is also cleaned up.
So when iwd is killed via killall, nobody is there to reap the zombie
process (test-runner is running as init, but doesn't do this)
The easiest solution is to make the test script itself clean up any iwd
processes it launches. This is what has been implemented in the
previous patch.
Some unit tests expect to be running from the top level iwd tree
directory to load certificates and such. Make sure that test-runner
chdirs to the appropriate directory prior to running the unit tests.
The argv buffer allocated by alloca is only large enough to hold the
original argument list. Additional arguments (such as --kernel) are
appended at the end, which results in the stack corruption. Make sure
to allocate space for additional arguments.
When KVM is available, use the -cpu host option. This is useful on
distributions that might use architecture specific optimizations, which
might not be available on the default machine being emulated by qemu.
For example, a Gentoo box compiled with "-march=core-avx2" would result
in several binaries not executing properly inside the qemu environment
due to instruction set mismatches.
