From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from phobos.denx.de (phobos.denx.de [85.214.62.61]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id A6F5FC7619A for ; Wed, 12 Apr 2023 09:43:37 +0000 (UTC) Received: from h2850616.stratoserver.net (localhost [IPv6:::1]) by phobos.denx.de (Postfix) with ESMTP id BA0B185FC2; Wed, 12 Apr 2023 11:43:21 +0200 (CEST) Authentication-Results: phobos.denx.de; dmarc=fail (p=none dis=none) header.from=arm.com Authentication-Results: phobos.denx.de; spf=pass smtp.mailfrom=u-boot-bounces@lists.denx.de Received: by phobos.denx.de (Postfix, from userid 109) id 0BF5485F8F; Wed, 12 Apr 2023 11:43:10 +0200 (CEST) Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by phobos.denx.de (Postfix) with ESMTP id DA6D685C5E for ; Wed, 12 Apr 2023 11:43:05 +0200 (CEST) Authentication-Results: phobos.denx.de; dmarc=pass (p=none dis=none) header.from=arm.com Authentication-Results: phobos.denx.de; spf=pass smtp.mailfrom=abdellatif.elkhlifi@arm.com Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 3A5C3C14; Wed, 12 Apr 2023 02:43:49 -0700 (PDT) Received: from e130802.arm.com (unknown [10.57.21.133]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 82F883F587; Wed, 12 Apr 2023 02:43:02 -0700 (PDT) From: Abdellatif El Khlifi To: abdellatif.elkhlifi@arm.com Cc: Drew.Reed@arm.com, achin.gupta@arm.com, ilias.apalodimas@linaro.org, jens.wiklander@linaro.org, nd@arm.com, robh@kernel.org, sjg@chromium.org, trini@konsulko.com, u-boot@lists.denx.de, xueliang.zhong@arm.com Subject: [PATCH v11 02/10] lib: uuid: introduce uuid_str_to_le_bin function Date: Wed, 12 Apr 2023 10:42:37 +0100 Message-Id: <20230412094245.44674-3-abdellatif.elkhlifi@arm.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230412094245.44674-1-abdellatif.elkhlifi@arm.com> References: <20230328161157.219375-1-abdellatif.elkhlifi@arm.com> <20230412094245.44674-1-abdellatif.elkhlifi@arm.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 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 convert UUID string to little endian binary data Signed-off-by: Abdellatif El Khlifi Reviewed-by: Simon Glass Cc: Tom Rini Cc: Simon Glass Cc: Ilias Apalodimas Cc: Jens Wiklander --- Changelog: =============== v9: * add a full function prototype description in uuid.h v8: * use simple_strtoull() in uuid_str_to_le_bin() to support 32-bit platforms v7: * rename be_uuid_str_to_le_bin() to uuid_str_to_le_bin() * make uuid_str_to_le_bin() implementation similar to uuid_str_to_bin() by using same APIs v4: * rename ffa_uuid_str_to_bin to be_uuid_str_to_le_bin and put in a standalone commit (the current) v3: * introduce ffa_uuid_str_to_bin (provided by arm_ffa: introduce Arm FF-A low-level driver) include/uuid.h | 15 +++++++++++++++ lib/uuid.c | 48 ++++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 63 insertions(+) diff --git a/include/uuid.h b/include/uuid.h index 4a4883d3b5..89b93e642b 100644 --- a/include/uuid.h +++ b/include/uuid.h @@ -2,6 +2,10 @@ /* * Copyright (C) 2014 Samsung Electronics * Przemyslaw Marczak + * Copyright 2022-2023 Arm Limited and/or its affiliates + * + * Authors: + * Abdellatif El Khlifi */ #ifndef __UUID_H__ #define __UUID_H__ @@ -44,4 +48,15 @@ int uuid_guid_get_bin(const char *guid_str, unsigned char *guid_bin); const char *uuid_guid_get_str(const unsigned char *guid_bin); void gen_rand_uuid(unsigned char *uuid_bin); void gen_rand_uuid_str(char *uuid_str, int str_format); + +/** + * uuid_str_to_le_bin() - Convert string UUID to little endian binary data. + * @uuid_str: pointer to UUID string + * @uuid_bin: pointer to allocated array for little endian output [16B] + * Return: + * uuid_bin filled with little endian UUID data + * On success 0 is returned. Otherwise, failure code. + */ +int uuid_str_to_le_bin(const char *uuid_str, unsigned char *uuid_bin); + #endif diff --git a/lib/uuid.c b/lib/uuid.c index 96e1af3c8b..45f325d964 100644 --- a/lib/uuid.c +++ b/lib/uuid.c @@ -1,6 +1,10 @@ // SPDX-License-Identifier: GPL-2.0+ /* * Copyright 2011 Calxeda, Inc. + * Copyright 2022-2023 Arm Limited and/or its affiliates + * + * Authors: + * Abdellatif El Khlifi */ #include @@ -354,6 +358,50 @@ int uuid_str_to_bin(const char *uuid_str, unsigned char *uuid_bin, return 0; } +/** + * uuid_str_to_le_bin() - Convert string UUID to little endian binary data. + * @uuid_str: pointer to UUID string + * @uuid_bin: pointer to allocated array for little endian output [16B] + * + * UUID string is 36 characters (36 bytes): + * + * xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx + * + * where x is a hexadecimal character. Fields are separated by '-'s. + * When converting to a little endian binary UUID, the string fields are reversed. + * + * Return: + * + * uuid_bin filled with little endian UUID data + * On success 0 is returned. Otherwise, failure code. + */ +int uuid_str_to_le_bin(const char *uuid_str, unsigned char *uuid_bin) +{ + u16 tmp16; + u32 tmp32; + u64 tmp64; + + if (!uuid_str_valid(uuid_str) || !uuid_bin) + return -EINVAL; + + tmp32 = cpu_to_le32(hextoul(uuid_str, NULL)); + memcpy(uuid_bin, &tmp32, 4); + + tmp16 = cpu_to_le16(hextoul(uuid_str + 9, NULL)); + memcpy(uuid_bin + 4, &tmp16, 2); + + tmp16 = cpu_to_le16(hextoul(uuid_str + 14, NULL)); + memcpy(uuid_bin + 6, &tmp16, 2); + + tmp16 = cpu_to_le16(hextoul(uuid_str + 19, NULL)); + memcpy(uuid_bin + 8, &tmp16, 2); + + tmp64 = cpu_to_le64(simple_strtoull(uuid_str + 24, NULL, 16)); + memcpy(uuid_bin + 10, &tmp64, 6); + + return 0; +} + /* * uuid_bin_to_str() - convert big endian binary data to string UUID or GUID. * -- 2.25.1