From patchwork Thu Aug 29 11:24:54 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hongbo Li X-Patchwork-Id: 13783032 Received: from szxga04-in.huawei.com (szxga04-in.huawei.com [45.249.212.190]) (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 DE0372B9CD for ; Thu, 29 Aug 2024 11:16:56 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=45.249.212.190 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1724930218; cv=none; b=Nq2+0rHkOQWgUEDBz12nXlxbpFUQkH2UN6Ri13E0nD932NJ4T0qsyaUeoBkJE14PeEyHN5iQZ8+XQJ/1JBA4Ee+F2Mh+VpUzhvpwvG7pJk4BgJlZ2Lvw5YhURJpbxCB58jl5p+YRQ2roojiJkG3DFmx9YBl883+KgeKj/UQ2Vjw= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1724930218; c=relaxed/simple; bh=lbT8wY1WLNTiEqM372mxT1DNFh6kMW+/tis5jCTR4p0=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=JSE3Jd28zqTy96BVbZwcIV8BMR4QtSD7KgkLqmP3PTg2Ihxd8pv0zEA0d1bYJstRhIiwOeVXzufeNdEfA9eTvv+ODqcQFXHHAlrqjmlZEWqUPZ1MZ24pUa3uhS7KgfXpuRADgtXy5Ic/jdtTvf77W597ZCbSG2W5Dv+RhQykblQ= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=huawei.com; spf=pass smtp.mailfrom=huawei.com; arc=none smtp.client-ip=45.249.212.190 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=huawei.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=huawei.com Received: from mail.maildlp.com (unknown [172.19.163.17]) by szxga04-in.huawei.com (SkyGuard) with ESMTP id 4Wvdyf04JNz2Dbb4; Thu, 29 Aug 2024 19:16:42 +0800 (CST) Received: from dggpeml500022.china.huawei.com (unknown [7.185.36.66]) by mail.maildlp.com (Postfix) with ESMTPS id A3B921A0188; Thu, 29 Aug 2024 19:16:54 +0800 (CST) Received: from huawei.com (10.90.53.73) by dggpeml500022.china.huawei.com (7.185.36.66) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.1.2507.39; Thu, 29 Aug 2024 19:16:54 +0800 From: Hongbo Li To: , , , CC: , , Subject: [PATCH -next 1/2] coccinelle: Add rules to find str_true_false() replacements Date: Thu, 29 Aug 2024 19:24:54 +0800 Message-ID: <20240829112455.232263-2-lihongbo22@huawei.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240829112455.232263-1-lihongbo22@huawei.com> References: <20240829112455.232263-1-lihongbo22@huawei.com> Precedence: bulk X-Mailing-List: linux-hardening@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: dggems704-chm.china.huawei.com (10.3.19.181) To dggpeml500022.china.huawei.com (7.185.36.66) After str_true_false() has been introduced in the tree, we can add rules for finding places where str_true_false() can be used. A simple test can find over 10 locations. Signed-off-by: Hongbo Li --- drivers/net/wireless/broadcom/brcm80211/brcmsmac/mac80211_if.c:910:40-44: opportunity for str_true_false(drop) drivers/net/wireless/broadcom/brcm80211/brcmsmac/mac80211_if.c:543:20-56: opportunity for str_true_false(conf -> flags & IEEE80211_CONF_MONITOR) drivers/net/wireless/broadcom/brcm80211/brcmsmac/mac80211_if.c:547:15-46: opportunity for str_true_false(conf -> flags & IEEE80211_CONF_PS) drivers/net/wireless/broadcom/brcm80211/brcmsmac/mac80211_if.c:718:15-35: opportunity for str_true_false(vif -> cfg . ibss_joined) drivers/net/wireless/broadcom/brcm80211/brcmsmac/mac80211_if.c:699:5-24: opportunity for str_true_false(info -> enable_beacon) drivers/net/wireless/broadcom/brcm80211/brcmsmac/mac80211_if.c:733:15-24: opportunity for str_true_false(info -> qos) drivers/net/wireless/ath/ath9k/link.c:393:24-43: opportunity for str_true_false(common -> ani . caldone) drivers/net/arcnet/com20020-pci.c:104:29-42: opportunity for str_true_false(lp -> backplane) drivers/net/ethernet/intel/ice/ice_switch.c:2100:19-37: opportunity for str_true_false(params -> mask_valid) drivers/net/wireless/ath/wil6210/interrupt.c:102:6-15: opportunity for str_true_false(mask_halp) drivers/net/wireless/ath/wil6210/interrupt.c:154:6-17: opportunity for str_true_false(unmask_halp) drivers/net/ethernet/intel/ice/ice_vlan_mode.c:257:6-24: opportunity for str_true_false(params -> mask_valid) --- scripts/coccinelle/api/string_choices.cocci | 23 +++++++++++++++++++++ 1 file changed, 23 insertions(+) diff --git a/scripts/coccinelle/api/string_choices.cocci b/scripts/coccinelle/api/string_choices.cocci index 5e729f187f22..50329c4c8acd 100644 --- a/scripts/coccinelle/api/string_choices.cocci +++ b/scripts/coccinelle/api/string_choices.cocci @@ -85,3 +85,26 @@ e << str_down_up_r.E; @@ coccilib.report.print_report(p[0], "opportunity for str_down_up(%s)" % e) + +@str_true_false depends on patch@ +expression E; +@@ +( +- ((E) ? "true" : "false") ++ str_true_false(E) +) + +@str_true_false_r depends on !patch exists@ +expression E; +position P; +@@ +( +* ((E@P) ? "true" : "false") +) + +@script:python depends on report@ +p << str_true_false_r.P; +e << str_true_false_r.E; +@@ + +coccilib.report.print_report(p[0], "opportunity for str_true_false(%s)" % e)