{"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/","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":"<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.","commit_ref":null,"pull_url":null,"state":"not-applicable","archived":false,"hash":"65e54b06d7768901632b2252932883dec4ded411","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/68db4e57bb88c523f76dcae12feafbb0cae1a85d.1617375802.git.christophe.leroy@csgroup.eu/mbox/","series":[{"id":237158,"url":"http://patchwork.ozlabs.org/api/series/237158/?format=json","web_url":"http://patchwork.ozlabs.org/project/linuxppc-dev/list/?series=237158","date":"2021-04-02T15:18:03","name":"Implement GENERIC_CMDLINE","version":4,"mbox":"http://patchwork.ozlabs.org/series/237158/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/patches/1461758/comments/","check":"success","checks":"http://patchwork.ozlabs.org/api/patches/1461758/checks/","tags":{},"related":[{"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/","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.","mbox":"http://patchwork.ozlabs.org/project/linuxppc-dev/patch/878228ad88df38f8914c7aa25dede3ed05c50f48.1616765869.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; 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Fri, 2 Apr 2021 15:18:02 +0000 (UTC)"],"X-Virus-Scanned":["Debian amavisd-new at c-s.fr","amavisd-new at c-s.fr"],"Message-Id":"\n <68db4e57bb88c523f76dcae12feafbb0cae1a85d.1617375802.git.christophe.leroy@csgroup.eu>","In-Reply-To":"","References":"","From":"Christophe Leroy ","Subject":"[PATCH v4 01/20] 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, arnd@kernel.org,\n akpm@linux-foundation.org","Date":"Fri, 2 Apr 2021 15:18:02 +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, linux-mm@kvack.org,\n 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\nv4:\n- Add cmdline_strlcpy()\n- Removed cmdline_build() macro, __cmdline_build() becomes cmdline_build()\n- Fixed the destination length to COMMAND_LINE_SIZE\n- Truncate at a space not in a quote when too long\n- Added a message when forcing the command line\n---\n include/linux/cmdline.h | 79 +++++++++++++++++++++++++++++++++++++++++\n 1 file changed, 79 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..a0773dc365c7\n--- /dev/null\n+++ b/include/linux/cmdline.h\n@@ -0,0 +1,79 @@\n+/* SPDX-License-Identifier: GPL-2.0 */\n+#ifndef _LINUX_CMDLINE_H\n+#define _LINUX_CMDLINE_H\n+\n+#include \n+#include \n+#include \n+\n+/* Allow users to override strlcat/strlcpy, powerpc can't use strings so early*/\n+#ifndef cmdline_strlcat\n+#define cmdline_strlcat strlcat\n+#define cmdline_strlcpy strlcpy\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 command line (Min. size COMMAND_LINE_SIZE)\n+ * @src: The starting string or NULL if there isn't one. Must not equal dst.\n+ * Returns: false if the string was truncated, true otherwise\n+ */\n+static __always_inline bool __cmdline_build(char *dst, const char *src)\n+{\n+\tint len;\n+\tchar *ptr, *last_space;\n+\tbool in_quote = false;\n+\n+\tif (IS_ENABLED(CONFIG_CMDLINE_FORCE))\n+\t\tsrc = NULL;\n+\n+\tdst[0] = 0;\n+\n+\tif (IS_ENABLED(CONFIG_CMDLINE_PREPEND))\n+\t\tlen = cmdline_strlcat(dst, CONFIG_CMDLINE \" \", COMMAND_LINE_SIZE);\n+\n+\tlen = cmdline_strlcat(dst, src, COMMAND_LINE_SIZE);\n+\n+\tif (IS_ENABLED(CONFIG_CMDLINE_EXTEND))\n+\t\tlen = cmdline_strlcat(dst, \" \" CONFIG_CMDLINE, COMMAND_LINE_SIZE);\n+\n+\tif (len < COMMAND_LINE_SIZE - 1)\n+\t\treturn true;\n+\n+\tfor (ptr = dst; *ptr; ptr++) {\n+\t\tif (*ptr == '\"')\n+\t\t\tin_quote = !in_quote;\n+\t\tif (*ptr == ' ' && !in_quote)\n+\t\t\tlast_space = ptr;\n+\t}\n+\tif (last_space)\n+\t\t*last_space = 0;\n+\n+\treturn false;\n+}\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 command line (Min. size COMMAND_LINE_SIZE)\n+ * @src: The starting string or NULL if there isn't one.\n+ */\n+static __always_inline void cmdline_build(char *dst, const char *src)\n+{\n+\tstatic char tmp[COMMAND_LINE_SIZE] __initdata;\n+\n+\tif (src == dst) {\n+\t\tcmdline_strlcpy(tmp, src, COMMAND_LINE_SIZE);\n+\t\tsrc = tmp;\n+\t}\n+\tif (!__cmdline_build(dst, src))\n+\t\tpr_warn(\"Command line is too long, it has been truncated\\n\");\n+\n+\tif (IS_ENABLED(CONFIG_CMDLINE_FORCE))\n+\t\tpr_info(\"Forcing kernel command line to: %s\\n\", dst);\n+}\n+\n+#endif /* _LINUX_CMDLINE_H */\n","prefixes":["v4","01/20"]}