From patchwork Fri Jul 14 11:24:51 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Matthias Schiffer X-Patchwork-Id: 1807739 X-Patchwork-Delegate: trini@ti.com Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=lists.denx.de (client-ip=2a01:238:438b:c500:173d:9f52:ddab:ee01; helo=phobos.denx.de; envelope-from=u-boot-bounces@lists.denx.de; receiver=) Authentication-Results: legolas.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=tq-group.com header.i=@tq-group.com header.a=rsa-sha256 header.s=key1 header.b=pF4vyNUF; dkim-atps=neutral Received: from phobos.denx.de (phobos.denx.de [IPv6:2a01:238:438b:c500:173d:9f52:ddab:ee01]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-384) server-digest SHA384) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4R2Tg020CJz20c1 for ; Fri, 14 Jul 2023 21:25:30 +1000 (AEST) Received: from h2850616.stratoserver.net (localhost [IPv6:::1]) by phobos.denx.de (Postfix) with ESMTP id 1DD8286CC3; Fri, 14 Jul 2023 13:25:21 +0200 (CEST) Authentication-Results: phobos.denx.de; dmarc=none (p=none dis=none) header.from=ew.tq-group.com Authentication-Results: phobos.denx.de; spf=pass smtp.mailfrom=u-boot-bounces@lists.denx.de Authentication-Results: phobos.denx.de; dkim=pass (2048-bit key; unprotected) header.d=tq-group.com header.i=@tq-group.com header.b="pF4vyNUF"; dkim-atps=neutral Received: by phobos.denx.de (Postfix, from userid 109) id 39DD886CCE; Fri, 14 Jul 2023 13:25:19 +0200 (CEST) X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on phobos.denx.de X-Spam-Level: X-Spam-Status: No, score=-2.0 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_EF,SPF_HELO_NONE,SPF_PASS,T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.2 Received: from mx1.tq-group.com (mx1.tq-group.com [93.104.207.81]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by phobos.denx.de (Postfix) with ESMTPS id 321D886CC9 for ; Fri, 14 Jul 2023 13:25:16 +0200 (CEST) Authentication-Results: phobos.denx.de; dmarc=none (p=none dis=none) header.from=ew.tq-group.com Authentication-Results: phobos.denx.de; spf=pass smtp.mailfrom=matthias.schiffer@ew.tq-group.com DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=tq-group.com; i=@tq-group.com; q=dns/txt; s=key1; t=1689333916; x=1720869916; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=b6LfGCrYWYDTpOabgNEo6uJOS3nJVmz8FaPR4c/f6uE=; b=pF4vyNUFTvR30uTf7zdNMNjD/T4U02OyLubSwqpEbnGymklKAMrdSAYw AKs7BZqumcpmj6Zoap99Cv8gDzhwIRel7HLkXYpVMO9QYlV9qQdKVq+Ky KHtNXgbeeIiQGbAdaFA37bXWHkNmMqzMsyY9j4Kkr6EVa1ahDcgtZ3brh BbMQ+jhhhcWWZBPTd1Kra93ctp2q7quf2e4PaA41Ga6JO/UgK6gHio5lv ITNzgkaLUpdgdOm9o9171uRm99waDPZxhK1aIY9030icn0RLcIt5QfvUy yG5KpqNzOC7HxCIVQgq2649GY92vM9my1LZ/svVF6/1O7QLHguwnc7vx8 Q==; X-IronPort-AV: E=Sophos;i="6.01,205,1684792800"; d="scan'208";a="31936102" Received: from vtuxmail01.tq-net.de ([10.115.0.20]) by mx1.tq-group.com with ESMTP; 14 Jul 2023 13:25:15 +0200 Received: from localhost.localdomain (SCHIFFERM-M2.tq-net.de [10.121.49.20]) by vtuxmail01.tq-net.de (Postfix) with ESMTPA id 46204280084; Fri, 14 Jul 2023 13:25:15 +0200 (CEST) From: Matthias Schiffer To: u-boot@lists.denx.de Cc: Simon Glass , Sean Anderson , Masahisa Kojima , u-boot-amlogic@groups.io, u-boot@ew.tq-group.com, Matthias Schiffer Subject: [PATCH 2/2] lib/charset: fix u16_strlcat() return value Date: Fri, 14 Jul 2023 13:24:51 +0200 Message-Id: <20230714112451.144294-2-matthias.schiffer@ew.tq-group.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230714112451.144294-1-matthias.schiffer@ew.tq-group.com> References: <20230714112451.144294-1-matthias.schiffer@ew.tq-group.com> MIME-Version: 1.0 X-BeenThere: u-boot@lists.denx.de X-Mailman-Version: 2.1.39 Precedence: list List-Id: U-Boot discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: u-boot-bounces@lists.denx.de Sender: "U-Boot" X-Virus-Scanned: clamav-milter 0.103.8 at phobos.denx.de X-Virus-Status: Clean strlcat returns min(strlen(dest), count)+strlen(src). Make u16_strlcat's behaviour the same for consistency. Fixes: eca08ce94ceb ("lib/charset: add u16_strlcat() function") Signed-off-by: Matthias Schiffer --- lib/charset.c | 8 ++++---- test/unicode_ut.c | 8 ++++---- 2 files changed, 8 insertions(+), 8 deletions(-) diff --git a/lib/charset.c b/lib/charset.c index b1842755eb1..5e4c4f948a4 100644 --- a/lib/charset.c +++ b/lib/charset.c @@ -444,14 +444,14 @@ u16 *u16_strdup(const void *src) size_t u16_strlcat(u16 *dest, const u16 *src, size_t count) { - size_t destlen = u16_strlen(dest); + size_t destlen = u16_strnlen(dest, count); size_t srclen = u16_strlen(src); - size_t ret = destlen + srclen + 1; + size_t ret = destlen + srclen; if (destlen >= count) return ret; - if (ret > count) - srclen -= ret - count; + if (ret >= count) + srclen -= (ret - count + 1); memcpy(&dest[destlen], src, 2 * srclen); dest[destlen + srclen] = 0x0000; diff --git a/test/unicode_ut.c b/test/unicode_ut.c index b27d7116b9e..a9356e2b60d 100644 --- a/test/unicode_ut.c +++ b/test/unicode_ut.c @@ -808,12 +808,12 @@ static int unicode_test_u16_strlcat(struct unit_test_state *uts) /* dest and src are empty string */ memset(buf, 0, sizeof(buf)); ret = u16_strlcat(buf, &null_src, sizeof(buf)); - ut_asserteq(1, ret); + ut_asserteq(0, ret); /* dest is empty string */ memset(buf, 0, sizeof(buf)); ret = u16_strlcat(buf, src, sizeof(buf)); - ut_asserteq(5, ret); + ut_asserteq(4, ret); ut_assert(!unicode_test_u16_strcmp(buf, src, 40)); /* src is empty string */ @@ -821,14 +821,14 @@ static int unicode_test_u16_strlcat(struct unit_test_state *uts) buf[39] = 0; memcpy(buf, dest, sizeof(dest)); ret = u16_strlcat(buf, &null_src, sizeof(buf)); - ut_asserteq(6, ret); + ut_asserteq(5, ret); ut_assert(!unicode_test_u16_strcmp(buf, dest, 40)); for (i = 0; i <= 40; i++) { memset(buf, 0xCD, (sizeof(buf) - sizeof(u16))); buf[39] = 0; memcpy(buf, dest, sizeof(dest)); - expected = 10; + expected = min(5, i) + 4; ret = u16_strlcat(buf, src, i); ut_asserteq(expected, ret); if (i <= 6) {