{"id":1458780,"url":"http://patchwork.ozlabs.org/api/patches/1458780/?format=json","web_url":"http://patchwork.ozlabs.org/project/linuxppc-dev/patch/878228ad88df38f8914c7aa25dede3ed05c50f48.1616765869.git.christophe.leroy@csgroup.eu/","project":{"id":2,"url":"http://patchwork.ozlabs.org/api/projects/2/?format=json","name":"Linux PPC development","link_name":"linuxppc-dev","list_id":"linuxppc-dev.lists.ozlabs.org","list_email":"linuxppc-dev@lists.ozlabs.org","web_url":"https://github.com/linuxppc/wiki/wiki","scm_url":"https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git","webscm_url":"https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git/","list_archive_url":"https://lore.kernel.org/linuxppc-dev/","list_archive_url_format":"https://lore.kernel.org/linuxppc-dev/{}/","commit_url_format":"https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git/commit/?id={}"},"msgid":"<878228ad88df38f8914c7aa25dede3ed05c50f48.1616765869.git.christophe.leroy@csgroup.eu>","list_archive_url":"https://lore.kernel.org/linuxppc-dev/878228ad88df38f8914c7aa25dede3ed05c50f48.1616765869.git.christophe.leroy@csgroup.eu/","date":"2021-03-26T13:44:48","name":"[v3,01/17] cmdline: Add generic function to build command line.","commit_ref":null,"pull_url":null,"state":"not-applicable","archived":false,"hash":"efba7472d2f8593e6155ad721ef51e50ad256afe","submitter":{"id":79086,"url":"http://patchwork.ozlabs.org/api/people/79086/?format=json","name":"Christophe Leroy","email":"christophe.leroy@csgroup.eu"},"delegate":null,"mbox":"http://patchwork.ozlabs.org/project/linuxppc-dev/patch/878228ad88df38f8914c7aa25dede3ed05c50f48.1616765869.git.christophe.leroy@csgroup.eu/mbox/","series":[{"id":236020,"url":"http://patchwork.ozlabs.org/api/series/236020/?format=json","web_url":"http://patchwork.ozlabs.org/project/linuxppc-dev/list/?series=236020","date":"2021-03-26T13:44:49","name":"Implement GENERIC_CMDLINE","version":3,"mbox":"http://patchwork.ozlabs.org/series/236020/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/patches/1458780/comments/","check":"warning","checks":"http://patchwork.ozlabs.org/api/patches/1458780/checks/","tags":{},"related":[{"id":1461758,"url":"http://patchwork.ozlabs.org/api/patches/1461758/?format=json","web_url":"http://patchwork.ozlabs.org/project/linuxppc-dev/patch/68db4e57bb88c523f76dcae12feafbb0cae1a85d.1617375802.git.christophe.leroy@csgroup.eu/","msgid":"<68db4e57bb88c523f76dcae12feafbb0cae1a85d.1617375802.git.christophe.leroy@csgroup.eu>","list_archive_url":"https://lore.kernel.org/linuxppc-dev/68db4e57bb88c523f76dcae12feafbb0cae1a85d.1617375802.git.christophe.leroy@csgroup.eu/","date":"2021-04-02T15:18:02","name":"[v4,01/20] cmdline: Add generic function to build command line.","mbox":"http://patchwork.ozlabs.org/project/linuxppc-dev/patch/68db4e57bb88c523f76dcae12feafbb0cae1a85d.1617375802.git.christophe.leroy@csgroup.eu/mbox/"}],"headers":{"Return-Path":"\n ","X-Original-To":["patchwork-incoming@ozlabs.org","linuxppc-dev@lists.ozlabs.org"],"Delivered-To":["patchwork-incoming@ozlabs.org","linuxppc-dev@lists.ozlabs.org"],"Authentication-Results":["ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=lists.ozlabs.org\n (client-ip=112.213.38.117; helo=lists.ozlabs.org;\n envelope-from=linuxppc-dev-bounces+patchwork-incoming=ozlabs.org@lists.ozlabs.org;\n receiver=)","lists.ozlabs.org; spf=pass (sender SPF authorized)\n smtp.mailfrom=csgroup.eu (client-ip=93.17.236.30; helo=pegase1.c-s.fr;\n envelope-from=christophe.leroy@csgroup.eu; receiver=)"],"Received":["from lists.ozlabs.org (lists.ozlabs.org [112.213.38.117])\n\t(using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)\n\t key-exchange X25519 server-signature RSA-PSS (4096 bits))\n\t(No client certificate requested)\n\tby ozlabs.org (Postfix) with ESMTPS id 4F6NXx5M05z9sVm\n\tfor ; Sat, 27 Mar 2021 00:46:09 +1100 (AEDT)","from boromir.ozlabs.org (localhost [IPv6:::1])\n\tby lists.ozlabs.org (Postfix) with ESMTP id 4F6NXx4FLLz3cXj\n\tfor ; Sat, 27 Mar 2021 00:46:09 +1100 (AEDT)","from pegase1.c-s.fr (pegase1.c-s.fr [93.17.236.30])\n (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits))\n (No client certificate requested)\n by lists.ozlabs.org (Postfix) with ESMTPS id 4F6NWV4nG3z2yyk\n for ; Sat, 27 Mar 2021 00:44:51 +1100 (AEDT)","from localhost (mailhub1-int [192.168.12.234])\n by localhost (Postfix) with ESMTP id 4F6NWM2kR9z9tyyX;\n Fri, 26 Mar 2021 14:44:47 +0100 (CET)","from pegase1.c-s.fr ([192.168.12.234])\n by localhost (pegase1.c-s.fr [192.168.12.234]) (amavisd-new, port 10024)\n with ESMTP id WniDc8Yabw7u; Fri, 26 Mar 2021 14:44:47 +0100 (CET)","from messagerie.si.c-s.fr (messagerie.si.c-s.fr [192.168.25.192])\n by pegase1.c-s.fr (Postfix) with ESMTP id 4F6NWM1m9wz9tyyV;\n Fri, 26 Mar 2021 14:44:47 +0100 (CET)","from localhost (localhost [127.0.0.1])\n by messagerie.si.c-s.fr (Postfix) with ESMTP id 18F9E8B8C9;\n Fri, 26 Mar 2021 14:44:48 +0100 (CET)","from messagerie.si.c-s.fr ([127.0.0.1])\n by localhost (messagerie.si.c-s.fr [127.0.0.1]) (amavisd-new, port 10023)\n with ESMTP id BZpKcB1zy9W0; Fri, 26 Mar 2021 14:44:48 +0100 (CET)","from po16121vm.idsi0.si.c-s.fr (unknown [192.168.4.90])\n by messagerie.si.c-s.fr (Postfix) with ESMTP id C3A018B8C7;\n Fri, 26 Mar 2021 14:44:47 +0100 (CET)","by po16121vm.idsi0.si.c-s.fr (Postfix, from userid 0)\n id 4859067611; Fri, 26 Mar 2021 13:44:48 +0000 (UTC)"],"X-Virus-Scanned":["Debian amavisd-new at c-s.fr","amavisd-new at c-s.fr"],"Message-Id":"\n <878228ad88df38f8914c7aa25dede3ed05c50f48.1616765869.git.christophe.leroy@csgroup.eu>","In-Reply-To":"","References":"","From":"Christophe Leroy ","Subject":"[PATCH v3 01/17] cmdline: Add generic function to build command line.","To":"will@kernel.org, danielwa@cisco.com, robh@kernel.org,\n daniel@gimpelevich.san-francisco.ca.us","Date":"Fri, 26 Mar 2021 13:44:48 +0000 (UTC)","X-BeenThere":"linuxppc-dev@lists.ozlabs.org","X-Mailman-Version":"2.1.29","Precedence":"list","List-Id":"Linux on PowerPC Developers Mail List ","List-Unsubscribe":",\n ","List-Archive":"","List-Post":"","List-Help":"","List-Subscribe":",\n ","Cc":"linux-arch@vger.kernel.org, devicetree@vger.kernel.org,\n microblaze , linux-xtensa@linux-xtensa.org,\n linux-sh@vger.kernel.org, linux-hexagon@vger.kernel.org, x86@kernel.org,\n linux-kernel@vger.kernel.org, nios2 ,\n linux-mips@vger.kernel.org, openrisc@lists.librecores.org,\n sparclinux@vger.kernel.org, linux-riscv@lists.infradead.org,\n linuxppc-dev@lists.ozlabs.org, linux-arm-kernel@lists.infradead.org","Errors-To":"linuxppc-dev-bounces+patchwork-incoming=ozlabs.org@lists.ozlabs.org","Sender":"\"Linuxppc-dev\"\n "},"content":"This code provides architectures with a way to build command line\nbased on what is built in the kernel and what is handed over by the\nbootloader, based on selected compile-time options.\n\nSigned-off-by: Christophe Leroy \n---\nv3:\n- Addressed comments from Will\n- Added capability to have src == dst\n---\n include/linux/cmdline.h | 57 +++++++++++++++++++++++++++++++++++++++++\n 1 file changed, 57 insertions(+)\n create mode 100644 include/linux/cmdline.h","diff":"diff --git a/include/linux/cmdline.h b/include/linux/cmdline.h\nnew file mode 100644\nindex 000000000000..dea87edd41be\n--- /dev/null\n+++ b/include/linux/cmdline.h\n@@ -0,0 +1,57 @@\n+/* SPDX-License-Identifier: GPL-2.0 */\n+#ifndef _LINUX_CMDLINE_H\n+#define _LINUX_CMDLINE_H\n+\n+#include \n+\n+/* Allow architectures to override strlcat, powerpc can't use strings so early */\n+#ifndef cmdline_strlcat\n+#define cmdline_strlcat strlcat\n+#endif\n+\n+/*\n+ * This function will append or prepend a builtin command line to the command\n+ * line provided by the bootloader. Kconfig options can be used to alter\n+ * the behavior of this builtin command line.\n+ * @dst: The destination of the final appended/prepended string.\n+ * @src: The starting string or NULL if there isn't one.\n+ * @len: the length of dest buffer.\n+ */\n+static __always_inline void __cmdline_build(char *dst, const char *src, size_t len)\n+{\n+\tif (!len || src == dst)\n+\t\treturn;\n+\n+\tif (IS_ENABLED(CONFIG_CMDLINE_FORCE) || !src) {\n+\t\tdst[0] = 0;\n+\t\tcmdline_strlcat(dst, CONFIG_CMDLINE, len);\n+\t\treturn;\n+\t}\n+\n+\tif (dst != src)\n+\t\tdst[0] = 0;\n+\n+\tif (IS_ENABLED(CONFIG_CMDLINE_PREPEND))\n+\t\tcmdline_strlcat(dst, CONFIG_CMDLINE \" \", len);\n+\n+\tcmdline_strlcat(dst, src, len);\n+\n+\tif (IS_ENABLED(CONFIG_CMDLINE_EXTEND))\n+\t\tcmdline_strlcat(dst, \" \" CONFIG_CMDLINE, len);\n+}\n+\n+#define cmdline_build(dst, src, len) do {\t\t\t\t\\\n+\tchar *__c_dst = (dst);\t\t\t\t\t\t\\\n+\tconst char *__c_src = (src);\t\t\t\t\t\\\n+\t\t\t\t\t\t\t\t\t\\\n+\tif (__c_src == __c_dst) {\t\t\t\t\t\\\n+\t\tstatic char __c_tmp[COMMAND_LINE_SIZE] __initdata = \"\";\t\\\n+\t\t\t\t\t\t\t\t\t\\\n+\t\tcmdline_strlcat(__c_tmp, __c_src, COMMAND_LINE_SIZE);\t\\\n+\t\t__cmdline_build(__c_dst, __c_tmp, (len));\t\t\\\n+\t} else {\t\t\t\t\t\t\t\\\n+\t\t__cmdline_build(__c_dst, __c_src, (len));\t\t\\\n+\t}\t\t\t\t\t\t\t\t\\\n+} while (0)\n+\n+#endif /* _LINUX_CMDLINE_H */\n","prefixes":["v3","01/17"]}