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GET /api/patches/1458780/?format=api
{ "id": 1458780, "url": "http://patchwork.ozlabs.org/api/patches/1458780/?format=api", "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=api", "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=api", "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=api", "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=api", "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 <linuxppc-dev-bounces+patchwork-incoming=ozlabs.org@lists.ozlabs.org>", "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=<UNKNOWN>)", "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=<UNKNOWN>)" ], "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 <patchwork-incoming@ozlabs.org>; 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 <patchwork-incoming@ozlabs.org>; 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 <linuxppc-dev@lists.ozlabs.org>; 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": "<cover.1616765869.git.christophe.leroy@csgroup.eu>", "References": "<cover.1616765869.git.christophe.leroy@csgroup.eu>", "From": "Christophe Leroy <christophe.leroy@csgroup.eu>", "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 <linuxppc-dev.lists.ozlabs.org>", "List-Unsubscribe": "<https://lists.ozlabs.org/options/linuxppc-dev>,\n <mailto:linuxppc-dev-request@lists.ozlabs.org?subject=unsubscribe>", "List-Archive": "<http://lists.ozlabs.org/pipermail/linuxppc-dev/>", "List-Post": "<mailto:linuxppc-dev@lists.ozlabs.org>", "List-Help": "<mailto:linuxppc-dev-request@lists.ozlabs.org?subject=help>", "List-Subscribe": "<https://lists.ozlabs.org/listinfo/linuxppc-dev>,\n <mailto:linuxppc-dev-request@lists.ozlabs.org?subject=subscribe>", "Cc": "linux-arch@vger.kernel.org, devicetree@vger.kernel.org,\n microblaze <monstr@monstr.eu>, 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 <ley.foon.tan@intel.com>,\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 <linuxppc-dev-bounces+patchwork-incoming=ozlabs.org@lists.ozlabs.org>" }, "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 <christophe.leroy@csgroup.eu>\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 <linux/string.h>\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" ] }