diff options
| author | Benjamin Tissoires <benjamin.tissoires@redhat.com> | 2022-11-03 16:57:52 +0100 |
|---|---|---|
| committer | Jiri Kosina <jkosina@suse.cz> | 2022-11-15 16:28:39 +0100 |
| commit | e8445737c0264cf4ddac682c278e0ef5b8a61a3d (patch) | |
| tree | 448fbfadc1b1507401f6a98a6e487a519d3d68a8 /tools/testing/selftests/hid/hid_bpf.c | |
| parent | ad190df11a024c1214fbc8dcaab72c592c79d9b5 (diff) | |
selftests/hid: add report descriptor fixup tests
Simple report descriptor override in HID: replace part of the report
descriptor from a static definition in the bpf kernel program.
Note that this test should be run last because we disconnect/reconnect
the device, meaning that it changes the overall uhid device.
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Diffstat (limited to 'tools/testing/selftests/hid/hid_bpf.c')
| -rw-r--r-- | tools/testing/selftests/hid/hid_bpf.c | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/tools/testing/selftests/hid/hid_bpf.c b/tools/testing/selftests/hid/hid_bpf.c index f77ee7fe4af4..eb329b5d299f 100644 --- a/tools/testing/selftests/hid/hid_bpf.c +++ b/tools/testing/selftests/hid/hid_bpf.c @@ -740,6 +740,38 @@ TEST_F(hid_bpf, test_hid_user_raw_request_call) ASSERT_EQ(args.data[1], 2); } +/* + * Attach hid_rdesc_fixup to the given uhid device, + * retrieve and open the matching hidraw node, + * check that the hidraw report descriptor has been updated. + */ +TEST_F(hid_bpf, test_rdesc_fixup) +{ + struct hidraw_report_descriptor rpt_desc = {0}; + const struct test_program progs[] = { + { .name = "hid_rdesc_fixup" }, + }; + int err, desc_size; + + LOAD_PROGRAMS(progs); + + /* check that hid_rdesc_fixup() was executed */ + ASSERT_EQ(self->skel->data->callback2_check, 0x21); + + /* read the exposed report descriptor from hidraw */ + err = ioctl(self->hidraw_fd, HIDIOCGRDESCSIZE, &desc_size); + ASSERT_GE(err, 0) TH_LOG("error while reading HIDIOCGRDESCSIZE: %d", err); + + /* ensure the new size of the rdesc is bigger than the old one */ + ASSERT_GT(desc_size, sizeof(rdesc)); + + rpt_desc.size = desc_size; + err = ioctl(self->hidraw_fd, HIDIOCGRDESC, &rpt_desc); + ASSERT_GE(err, 0) TH_LOG("error while reading HIDIOCGRDESC: %d", err); + + ASSERT_EQ(rpt_desc.value[4], 0x42); +} + static int libbpf_print_fn(enum libbpf_print_level level, const char *format, va_list args) { |