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authorBenjamin Tissoires <bentiss@kernel.org>2024-06-26 15:46:28 +0200
committerBenjamin Tissoires <bentiss@kernel.org>2024-06-27 11:00:45 +0200
commit9286675a2aed40a517be8cc4e283a04f473275b5 (patch)
tree9d32d1f847856d770a8c7374cc278ea91b6dbb73 /lib/pm-notifier-error-inject.c
parent015a4a2a439b285943da471d38b2721bbe4d8b39 (diff)
HID: bpf: add HID-BPF hooks for hid_hw_output_report
Same story than hid_hw_raw_requests: This allows to intercept and prevent or change the behavior of hid_hw_output_report() from a bpf program. The intent is to solve a couple of use case: - firewalling a HID device: a firewall can monitor who opens the hidraw nodes and then prevent or allow access to write operations on that hidraw node. - change the behavior of a device and emulate a new HID feature request The hook is allowed to be run as sleepable so it can itself call hid_hw_output_report(), which allows to "convert" one feature request into another or even call the feature request on a different HID device on the same physical device. Link: https://patch.msgid.link/20240626-hid_hw_req_bpf-v2-7-cfd60fb6c79f@kernel.org Acked-by: Jiri Kosina <jkosina@suse.com> Signed-off-by: Benjamin Tissoires <bentiss@kernel.org>
Diffstat (limited to 'lib/pm-notifier-error-inject.c')
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