This commonizes some mounting code between QEMU and UML to allow exporting
of files to the host environment. UML does this with a hostfs mount while
QEMU still uses 9p.
The common code sanitizing the inputs has been put into _prepare_outfiles
and _prepare_mounts was modified to take an 'extra' arugment containing
additional mount points.
The results and monitor parent directories are now passed into the environment
via arguments, and these are hidden from the help text (in addition to testhome)
If --help or unknown options were supplied to test-runner python
would thrown a maximum recusion depth exception. This was due to
the way ArgumentParser was subclassed.
To fix this call ArgumentParser.__init__() rather than using the
super() method. And do this also for the RunnerCoreArgParse
subclass as well. In addition the namespace argument was removed
from parse_args since its not used, and instead supplied directly
to the parents parse_args method.
This allows test-runner to run inside a UML binary which has some
advantages, specifically time-travel/infinite CPU speed. This should
fix any scheduler related failures we have on slower systems.
Currently this runner does not suppor the same features as the Qemu
runner, specifically:
- No hardware passthrough
- No logging/monitor (UML -> host mounting isn't implemented yet)
This (as well as subsequent commits) will separate test-runner into two
parts:
1. Environment setup
2. Running tests
Spurred by interest in adding UML/host support, test-runner was in need
of a refactor to separate out the environment setup and actually running
the tests.
The environment (currently only Qemu) requires quite a bit of special
handling (ctypes mounting/reboot, 9p mounts, tons of kernel options etc)
which nobody writing tests should need to see or care about. This has all
been moved into 'runner.py'.
Running the tests (inside test-runner) won't change much.
The new 'runner.py' module adds an abstraction class which allows different
Runner's to be implemented, and setup their own environment as they see
fit. This is in preparation for UML and Host runners.
