From patchwork Mon Aug 26 15:47:53 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Benjamin Tissoires X-Patchwork-Id: 822944 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id D7D0519413C; Mon, 26 Aug 2024 15:48:14 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1724687295; cv=none; b=o7dGr6btvMGENsuvSby1ivwGZS92U1SV+FU6x7EN/8Dmuae0nHkZvntD31t7UG+0zmZ00WA5t1hWtF7VhY4tSHkYUrP+OLJGnLHBJPsb4h07w3zFOE4NrBVH+pLcYihaMaEt8AWFAt3Xf1cd/YgKLLQ/67ekA7Q5Y+ypG1EpQoI= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1724687295; c=relaxed/simple; bh=G+InZdEellA5Fa695AuPGLjSD3WzX7SNoLqRZFTlhq8=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=ErQv4M4MW2PxE/cms/FG8FImey18XY2uAmYS4jLcJp5P3Ze1gvnKjUWcjIhDCl/q4lPBO51jotmXWg0y3rpdQHNFYArlsEBpj+j3SnvxIwl+aZ8Aj4zb87DFbzCRMl6bibvQxrNurg8CeFx9yYEdwus/TRme1goWlbN0RVIfCMQ= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=JBzGZtah; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="JBzGZtah" Received: by smtp.kernel.org (Postfix) with ESMTPSA id D306FC4FDE1; Mon, 26 Aug 2024 15:48:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1724687294; bh=G+InZdEellA5Fa695AuPGLjSD3WzX7SNoLqRZFTlhq8=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=JBzGZtah3mr2YchvudG8OhPBm6GaQB7SQOHXdqhGi7HAZlGZSU9qTO/64JPYM9bQo lCy20ebSkJJnRVIJ23JCkMUywBcekNhzWxUVd/PlkL1MrfQgR8GHKj4kalKooaIBQu y5HfkjSbwKbYkS4gCT7+tDWk62YdGyWSh2f/J4EI5vG2svaUkjPsDbAxwKh9EYxCCy qZIKJeqxSQaOlR2Wr8GHY4frPzHlrm7IHSdRhap+Sn8wNUaFCfDYiqdVeTMNuUJA2d qc5BGPlbfkyRwKgTdPauDojRRZkOX1s/GyrzLQ5X75xLPIBG9t7Xk/0jaaCpfwxUfY YXe/jz+iNGsCw== From: Benjamin Tissoires Date: Tue, 27 Aug 2024 00:47:53 +0900 Subject: [PATCH v4 3/3] selftests/hid: Add HIDIOCREVOKE tests Precedence: bulk X-Mailing-List: linux-kselftest@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20240827-hidraw-revoke-v4-3-88c6795bf867@kernel.org> References: <20240827-hidraw-revoke-v4-0-88c6795bf867@kernel.org> In-Reply-To: <20240827-hidraw-revoke-v4-0-88c6795bf867@kernel.org> To: Jiri Kosina , Shuah Khan , Peter Hutterer Cc: linux-input@vger.kernel.org, linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org, Benjamin Tissoires X-Mailer: b4 0.14.1 X-Developer-Signature: v=1; a=ed25519-sha256; t=1724687286; l=4826; i=bentiss@kernel.org; s=20230215; h=from:subject:message-id; bh=G+InZdEellA5Fa695AuPGLjSD3WzX7SNoLqRZFTlhq8=; b=sdiGNtpL7TBXwpcAzrS32Zag0wy6xlF9x6XmngbEI8pih4rSjZV9ynYdcOR3pa73vcIISh4s+ xnhY2q3YlkzBjcUIAM5tGVft08d+xOx03SnJ2iHJis2W0RMwVkLKf5k X-Developer-Key: i=bentiss@kernel.org; a=ed25519; pk=7D1DyAVh6ajCkuUTudt/chMuXWIJHlv2qCsRkIizvFw= Add 4 tests for the new revoke ioctl, for read/write/ioctl and poll. Signed-off-by: Benjamin Tissoires --- new in v4 --- tools/testing/selftests/hid/hidraw.c | 143 +++++++++++++++++++++++++++++++++++ 1 file changed, 143 insertions(+) diff --git a/tools/testing/selftests/hid/hidraw.c b/tools/testing/selftests/hid/hidraw.c index f8c933476dcd..669eada8886b 100644 --- a/tools/testing/selftests/hid/hidraw.c +++ b/tools/testing/selftests/hid/hidraw.c @@ -19,6 +19,11 @@ __typeof__(b) _b = (b); \ _a < _b ? _a : _b; }) +/* for older kernels */ +#ifndef HIDIOCREVOKE +#define HIDIOCREVOKE _IOW('H', 0x0D, int) /* Revoke device access */ +#endif /* HIDIOCREVOKE */ + static unsigned char rdesc[] = { 0x06, 0x00, 0xff, /* Usage Page (Vendor Defined Page 1) */ 0x09, 0x21, /* Usage (Vendor Usage 0x21) */ @@ -516,6 +521,144 @@ TEST_F(hidraw, raw_event) ASSERT_EQ(buf[1], 42); } +/* + * After initial opening/checks of hidraw, revoke the hidraw + * node and check that we can not read any more data. + */ +TEST_F(hidraw, raw_event_revoked) +{ + __u8 buf[10] = {0}; + int err; + + /* inject one event */ + buf[0] = 1; + buf[1] = 42; + uhid_send_event(_metadata, self->uhid_fd, buf, 6); + + /* read the data from hidraw */ + memset(buf, 0, sizeof(buf)); + err = read(self->hidraw_fd, buf, sizeof(buf)); + ASSERT_EQ(err, 6) TH_LOG("read_hidraw"); + ASSERT_EQ(buf[0], 1); + ASSERT_EQ(buf[1], 42); + + /* call the revoke ioctl */ + err = ioctl(self->hidraw_fd, HIDIOCREVOKE, NULL); + ASSERT_OK(err) TH_LOG("couldn't revoke the hidraw fd"); + + /* inject one other event */ + buf[0] = 1; + buf[1] = 43; + uhid_send_event(_metadata, self->uhid_fd, buf, 6); + + /* read the data from hidraw */ + memset(buf, 0, sizeof(buf)); + err = read(self->hidraw_fd, buf, sizeof(buf)); + ASSERT_EQ(err, -1) TH_LOG("read_hidraw"); +} + +/* + * Revoke the hidraw node and check that we can not do any ioctl. + */ +TEST_F(hidraw, ioctl_revoked) +{ + int err, desc_size = 0; + + /* call the revoke ioctl */ + err = ioctl(self->hidraw_fd, HIDIOCREVOKE, NULL); + ASSERT_OK(err) TH_LOG("couldn't revoke the hidraw fd"); + + /* do an ioctl */ + err = ioctl(self->hidraw_fd, HIDIOCGRDESCSIZE, &desc_size); + ASSERT_EQ(err, -1) TH_LOG("read_hidraw"); +} + +/* + * Setup polling of the fd, and check that revoke works properly. + */ +TEST_F(hidraw, poll_revoked) +{ + struct pollfd pfds[1]; + __u8 buf[10] = {0}; + int err, ready; + + /* setup polling */ + pfds[0].fd = self->hidraw_fd; + pfds[0].events = POLLIN; + + /* inject one event */ + buf[0] = 1; + buf[1] = 42; + uhid_send_event(_metadata, self->uhid_fd, buf, 6); + + while (true) { + ready = poll(pfds, 1, 5000); + ASSERT_EQ(ready, 1) TH_LOG("poll return value"); + + if (pfds[0].revents & POLLIN) { + memset(buf, 0, sizeof(buf)); + err = read(self->hidraw_fd, buf, sizeof(buf)); + ASSERT_EQ(err, 6) TH_LOG("read_hidraw"); + ASSERT_EQ(buf[0], 1); + ASSERT_EQ(buf[1], 42); + + /* call the revoke ioctl */ + err = ioctl(self->hidraw_fd, HIDIOCREVOKE, NULL); + ASSERT_OK(err) TH_LOG("couldn't revoke the hidraw fd"); + } else { + break; + } + } + + ASSERT_TRUE(pfds[0].revents & POLLHUP); +} + +/* + * After initial opening/checks of hidraw, revoke the hidraw + * node and check that we can not read any more data. + */ +TEST_F(hidraw, write_event_revoked) +{ + struct timespec time_to_wait; + __u8 buf[10] = {0}; + int err; + + /* inject one event from hidraw */ + buf[0] = 1; /* report ID */ + buf[1] = 2; + buf[2] = 42; + + pthread_mutex_lock(&uhid_output_mtx); + + memset(output_report, 0, sizeof(output_report)); + clock_gettime(CLOCK_REALTIME, &time_to_wait); + time_to_wait.tv_sec += 2; + + err = write(self->hidraw_fd, buf, 3); + ASSERT_EQ(err, 3) TH_LOG("unexpected error while writing to hidraw node: %d", err); + + err = pthread_cond_timedwait(&uhid_output_cond, &uhid_output_mtx, &time_to_wait); + ASSERT_OK(err) TH_LOG("error while calling waiting for the condition"); + + ASSERT_EQ(output_report[0], 1); + ASSERT_EQ(output_report[1], 2); + ASSERT_EQ(output_report[2], 42); + + /* call the revoke ioctl */ + err = ioctl(self->hidraw_fd, HIDIOCREVOKE, NULL); + ASSERT_OK(err) TH_LOG("couldn't revoke the hidraw fd"); + + /* inject one other event */ + buf[0] = 1; + buf[1] = 43; + err = write(self->hidraw_fd, buf, 3); + ASSERT_LT(err, 0) TH_LOG("unexpected success while writing to hidraw node: %d", err); + ASSERT_EQ(errno, 19) TH_LOG("unexpected error code while writing to hidraw node: %d", + errno); + + pthread_mutex_unlock(&uhid_output_mtx); +} + int main(int argc, char **argv) { return test_harness_run(argc, argv);