From patchwork Sat Mar 10 14:14:43 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Luis Chamberlain X-Patchwork-Id: 10273573 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 7510060594 for ; Sat, 10 Mar 2018 14:21:38 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 61CB328D91 for ; Sat, 10 Mar 2018 14:21:38 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 525CA29C19; Sat, 10 Mar 2018 14:21:38 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id A70B628D91 for ; Sat, 10 Mar 2018 14:21:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932456AbeCJOVf (ORCPT ); Sat, 10 Mar 2018 09:21:35 -0500 Received: from mail.kernel.org ([198.145.29.99]:50108 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751194AbeCJOPQ (ORCPT ); Sat, 10 Mar 2018 09:15:16 -0500 Received: from garbanzo.do-not-panic.com (c-73-15-241-2.hsd1.ca.comcast.net [73.15.241.2]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 4213E21797; Sat, 10 Mar 2018 14:15:15 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 4213E21797 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=mcgrof@kernel.org From: "Luis R. Rodriguez" To: gregkh@linuxfoundation.org Cc: akpm@linux-foundation.org, cantabile.desu@gmail.com, kubakici@wp.pl, linux-wireless@vger.kernel.org, keescook@chromium.org, shuah@kernel.org, mfuzzey@parkeon.com, zohar@linux.vnet.ibm.com, dhowells@redhat.com, pali.rohar@gmail.com, tiwai@suse.de, arend.vanspriel@broadcom.com, zajec5@gmail.com, nbroeking@me.com, markivx@codeaurora.org, broonie@kernel.org, dmitry.torokhov@gmail.com, dwmw2@infradead.org, torvalds@linux-foundation.org, Abhay_Salunke@dell.com, bjorn.andersson@linaro.org, jewalt@lgsinnovations.com, oneukum@suse.com, ast@fb.com, andresx7@gmail.com, linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, "Luis R. Rodriguez" Subject: [PATCH v3 02/20] test_firmware: enable custom fallback testing on limited kernel configs Date: Sat, 10 Mar 2018 06:14:43 -0800 Message-Id: <20180310141501.2214-3-mcgrof@kernel.org> X-Mailer: git-send-email 2.13.2 In-Reply-To: <20180310141501.2214-1-mcgrof@kernel.org> References: <20180310141501.2214-1-mcgrof@kernel.org> Sender: linux-fsdevel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP When a kernel is not built with: CONFIG_HAS_FW_LOADER_USER_HELPER_FALLBACK=y We don't currently enable testing fw_fallback.sh. For kernels that still enable the fallback mechanism, its possible to use the async request firmware API call request_firmware_nowait() using the custom interface to use the fallback mechanism, so we should be able to test this but we currently cannot. We can enable testing without CONFIG_HAS_FW_LOADER_USER_HELPER_FALLBACK=y by relying on /proc/config.gz (CONFIG_IKCONFIG_PROC), if present. If you don't have this we'll have no option but to rely on old heuristics for now. We stuff the new kconfig_has() helper into our shared library as we'll later expando on its use elsewhere. Acked-by: Kees Cook Signed-off-by: Luis R. Rodriguez --- tools/testing/selftests/firmware/config | 4 ++++ tools/testing/selftests/firmware/fw_fallback.sh | 6 +++++- tools/testing/selftests/firmware/fw_lib.sh | 24 ++++++++++++++++++++++++ 3 files changed, 33 insertions(+), 1 deletion(-) diff --git a/tools/testing/selftests/firmware/config b/tools/testing/selftests/firmware/config index c8137f70e291..bf634dda0720 100644 --- a/tools/testing/selftests/firmware/config +++ b/tools/testing/selftests/firmware/config @@ -1 +1,5 @@ CONFIG_TEST_FIRMWARE=y +CONFIG_FW_LOADER=y +CONFIG_FW_LOADER_USER_HELPER=y +CONFIG_IKCONFIG=y +CONFIG_IKCONFIG_PROC=y diff --git a/tools/testing/selftests/firmware/fw_fallback.sh b/tools/testing/selftests/firmware/fw_fallback.sh index 755147a8c967..bf850050e5e9 100755 --- a/tools/testing/selftests/firmware/fw_fallback.sh +++ b/tools/testing/selftests/firmware/fw_fallback.sh @@ -15,6 +15,7 @@ check_mods # These days no one enables CONFIG_FW_LOADER_USER_HELPER so check for that # as an indicator for CONFIG_FW_LOADER_USER_HELPER. HAS_FW_LOADER_USER_HELPER=$(if [ -d /sys/class/firmware/ ]; then echo yes; else echo no; fi) +HAS_FW_LOADER_USER_HELPER_FALLBACK=$(kconfig_has CONFIG_FW_LOADER_USER_HELPER_FALLBACK=y) if [ "$HAS_FW_LOADER_USER_HELPER" = "yes" ]; then OLD_TIMEOUT=$(cat /sys/class/firmware/timeout) @@ -287,7 +288,10 @@ run_sysfs_custom_load_tests() fi } -run_sysfs_main_tests +if [ "$HAS_FW_LOADER_USER_HELPER_FALLBACK" = "yes" ]; then + run_sysfs_main_tests +fi + run_sysfs_custom_load_tests exit 0 diff --git a/tools/testing/selftests/firmware/fw_lib.sh b/tools/testing/selftests/firmware/fw_lib.sh index c14bbca7ecf9..467567c758b9 100755 --- a/tools/testing/selftests/firmware/fw_lib.sh +++ b/tools/testing/selftests/firmware/fw_lib.sh @@ -42,3 +42,27 @@ check_mods() fi fi } + +kconfig_has() +{ + if [ -f $PROC_CONFIG ]; then + if zgrep -q $1 $PROC_CONFIG 2>/dev/null; then + echo "yes" + else + echo "no" + fi + else + # We currently don't have easy heuristics to infer this + # so best we can do is just try to use the kernel assuming + # you had enabled it. This matches the old behaviour. + if [ "$1" = "CONFIG_FW_LOADER_USER_HELPER_FALLBACK=y" ]; then + echo "yes" + elif [ "$1" = "CONFIG_FW_LOADER_USER_HELPER=y" ]; then + if [ -d /sys/class/firmware/ ]; then + echo yes + else + echo no + fi + fi + fi +}