From patchwork Mon Jun 15 19:41:47 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Scott Branden X-Patchwork-Id: 11605637 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id ED54F6A2 for ; Mon, 15 Jun 2020 19:43:03 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D10DF20714 for ; Mon, 15 Jun 2020 19:43:03 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=broadcom.com header.i=@broadcom.com header.b="INkNszYZ" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731436AbgFOTnD (ORCPT ); Mon, 15 Jun 2020 15:43:03 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58246 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730722AbgFOTmS (ORCPT ); Mon, 15 Jun 2020 15:42:18 -0400 Received: from mail-pl1-x62f.google.com (mail-pl1-x62f.google.com [IPv6:2607:f8b0:4864:20::62f]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D2DCFC08C5CA for ; Mon, 15 Jun 2020 12:42:15 -0700 (PDT) Received: by mail-pl1-x62f.google.com with SMTP id m7so7220088plt.5 for ; Mon, 15 Jun 2020 12:42:15 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=broadcom.com; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=sCHL24pJFJSFoASanMhktjUvoQlUfrXyegYhzckyoiE=; b=INkNszYZmY2wifOY2yJAIkXAChxTSePBWyOoj3tvJYRWfzjz0IgEM3o3cn8P1ksFmx kb6GtYmizImAg60vsTx3PS8iS2T6XGxfB0EbenzJoUUHJutkblYTO2bxLU5FnMDwZNJo JCmcIxNy4/LBVcnMwL5CsOSeX2VcquT7Y6Emw= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=sCHL24pJFJSFoASanMhktjUvoQlUfrXyegYhzckyoiE=; b=YwqlXTPuAd7ICSNZwypveiaUqLZYoQvcFcDCXIbFig6SnE12JEOo0d53oKkutuvN8R Y96gOcscJzYOrAVFi/3+ShDI3R6J/JdkPD47FqmV/tnwduvHBbhtoFPhIzRYBfimuqyW 9FugBmuPvjPHh5LaQe+cuY9A204UOvGtQvuILIPZ33n9d8uY2ZIriVnOdX3aj7zaczxw 0k9Q2Fdm9jvbcKTfoU7iOb435Rey9ZUekpT3mbThfT9MF3l7AGqYBO4UEPjWzQ2IPxpz 8Lf+QI5OXWJfLF3/EqEpW3U0C4d/qrBqyDVdpSH1vmB6M6zYEqyW+Dq+5fklLWZDddMP EFVQ== X-Gm-Message-State: AOAM531IAmaldmhFevYc/li7u/JM60CX7rF0tjeogewJvp5FEJ4bRVVY SM6wuv0yVzbsTJt16VsuqAfhUQ== X-Google-Smtp-Source: ABdhPJyETP8Ql6VRKP/AE8oPj2cFuyHxiNTpgJzwUePlExmYGh8vR9y/8m3suyFQihVgaBg1YKVx5g== X-Received: by 2002:a17:90a:db91:: with SMTP id h17mr857845pjv.6.1592250135228; Mon, 15 Jun 2020 12:42:15 -0700 (PDT) Received: from lbrmn-lnxub113.broadcom.net ([192.19.228.250]) by smtp.gmail.com with ESMTPSA id gq8sm293663pjb.14.2020.06.15.12.42.11 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 15 Jun 2020 12:42:14 -0700 (PDT) From: Scott Branden To: Luis Chamberlain , Wolfram Sang , Greg Kroah-Hartman , David Brown , Alexander Viro , Shuah Khan , bjorn.andersson@linaro.org, Shuah Khan , Arnd Bergmann Cc: Mimi Zohar , "Rafael J . Wysocki" , linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-fsdevel@vger.kernel.org, BCM Kernel Feedback , Olof Johansson , Andrew Morton , Dan Carpenter , Colin Ian King , Kees Cook , Takashi Iwai , linux-kselftest@vger.kernel.org, Andy Gross , linux-integrity@vger.kernel.org, linux-security-module@vger.kernel.org, Scott Branden Subject: [PATCH v9 4/8] firmware: test partial file reads of request_partial_firmware_into_buf Date: Mon, 15 Jun 2020 12:41:47 -0700 Message-Id: <20200615194151.7011-5-scott.branden@broadcom.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200615194151.7011-1-scott.branden@broadcom.com> References: <20200615194151.7011-1-scott.branden@broadcom.com> Sender: owner-linux-security-module@vger.kernel.org Precedence: bulk List-ID: Add firmware tests for partial file reads of request_partial_firmware_into_buf. Signed-off-by: Scott Branden --- .../selftests/firmware/fw_filesystem.sh | 80 +++++++++++++++++++ 1 file changed, 80 insertions(+) diff --git a/tools/testing/selftests/firmware/fw_filesystem.sh b/tools/testing/selftests/firmware/fw_filesystem.sh index fcc281373b4d..afc2e469ac06 100755 --- a/tools/testing/selftests/firmware/fw_filesystem.sh +++ b/tools/testing/selftests/firmware/fw_filesystem.sh @@ -149,6 +149,26 @@ config_unset_into_buf() echo 0 > $DIR/config_into_buf } +config_set_buf_size() +{ + echo $1 > $DIR/config_buf_size +} + +config_set_file_offset() +{ + echo $1 > $DIR/config_file_offset +} + +config_set_partial() +{ + echo 1 > $DIR/config_partial +} + +config_unset_partial() +{ + echo 0 > $DIR/config_partial +} + config_set_sync_direct() { echo 1 > $DIR/config_sync_direct @@ -207,6 +227,35 @@ read_firmwares() done } +read_partial_firmwares() +{ + if [ "$(cat $DIR/config_into_buf)" == "1" ]; then + fwfile="${FW_INTO_BUF}" + else + fwfile="${FW}" + fi + + if [ "$1" = "xzonly" ]; then + fwfile="${fwfile}-orig" + fi + + # Strip fwfile down to match partial offset and length + partial_data="$(cat $fwfile)" + partial_data="${partial_data:$2:$3}" + + for i in $(seq 0 3); do + config_set_read_fw_idx $i + + read_firmware="$(cat $DIR/read_firmware)" + + # Verify the contents are what we expect. + if [ $read_firmware != $partial_data ]; then + echo "request #$i: partial firmware was not loaded" >&2 + exit 1 + fi + done +} + read_firmwares_expect_nofile() { for i in $(seq 0 3); do @@ -319,6 +368,21 @@ test_batched_request_firmware_into_buf() echo "OK" } +test_batched_request_partial_firmware_into_buf() +{ + echo -n "Batched request_partial_firmware_into_buf() $2 off=$3 size=$4 try #$1: " + config_reset + config_set_name $TEST_FIRMWARE_INTO_BUF_FILENAME + config_set_into_buf + config_set_partial + config_set_buf_size $4 + config_set_file_offset $3 + config_trigger_sync + read_partial_firmwares $2 $3 $4 + release_all_firmware + echo "OK" +} + test_batched_request_firmware_direct() { echo -n "Batched request_firmware_direct() $2 try #$1: " @@ -371,6 +435,22 @@ for i in $(seq 1 5); do test_batched_request_firmware_into_buf $i normal done +for i in $(seq 1 5); do + test_batched_request_partial_firmware_into_buf $i normal 0 10 +done + +for i in $(seq 1 5); do + test_batched_request_partial_firmware_into_buf $i normal 0 5 +done + +for i in $(seq 1 5); do + test_batched_request_partial_firmware_into_buf $i normal 1 6 +done + +for i in $(seq 1 5); do + test_batched_request_partial_firmware_into_buf $i normal 2 10 +done + for i in $(seq 1 5); do test_batched_request_firmware_direct $i normal done