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Largely inspired from hid_bpf.c for the fixture setup.
Create a couple of tests for hidraw:
- create a uhid device and check if the fixture is working properly
- inject one uhid event and read it through hidraw
These tests are not that useful for now, but will be once we start adding
the ioctl and BPFs to revoke the hidraw node.
Reviewed-by: Peter Hutterer <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Benjamin Tissoires <[email protected]>
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Similar-ish in many points from the script in selftests/bpf, with a few
differences:
- relies on boot2container instead of a plain qemu image (meaning that
we can take any container in a registry as a base)
- runs in the hid selftest dir, and such uses the test program from there
- the working directory to store the config is in
tools/selftests/hid/results
Signed-off-by: Benjamin Tissoires <[email protected]>
Signed-off-by: Jiri Kosina <[email protected]>
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The tests are pretty basic:
- create a virtual uhid device that no userspace will like (to not mess
up the running system)
- attach a BPF prog to it
- open the matching hidraw node
- inject one event and check:
* that the BPF program can do something on the event stream
* can modify the event stream
- add another test where we attach/detach BPF programs to see if we get
errors
Note: the Makefile is extracted from selftests/bpf so we can rebuild
the libbpf and bpftool components from the current kernel tree without
relying on system installed components.
Signed-off-by: Benjamin Tissoires <[email protected]>
Signed-off-by: Jiri Kosina <[email protected]>
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