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GET /api/1.1/patches/2771/?format=api
{ "id": 2771, "url": "https://patchwork.libcamera.org/api/1.1/patches/2771/?format=api", "web_url": "https://patchwork.libcamera.org/patch/2771/", "project": { "id": 1, "url": "https://patchwork.libcamera.org/api/1.1/projects/1/?format=api", "name": "libcamera", "link_name": "libcamera", "list_id": "libcamera_core", "list_email": "libcamera-devel@lists.libcamera.org", "web_url": "", "scm_url": "", "webscm_url": "" }, "msgid": "<20200205130420.8736-2-kieran.bingham@ideasonboard.com>", "date": "2020-02-05T13:04:16", "name": "[libcamera-devel,1/5] libcamera: utils: Provide helper to get dynamic library runpath", "commit_ref": null, "pull_url": null, "state": "superseded", "archived": false, "hash": "ac4bb4cdcb66e5926a162ae5a7ad7d2a400a46aa", "submitter": { "id": 4, "url": "https://patchwork.libcamera.org/api/1.1/people/4/?format=api", "name": "Kieran Bingham", "email": "kieran.bingham@ideasonboard.com" }, "delegate": null, "mbox": "https://patchwork.libcamera.org/patch/2771/mbox/", "series": [ { "id": 661, "url": "https://patchwork.libcamera.org/api/1.1/series/661/?format=api", "web_url": "https://patchwork.libcamera.org/project/libcamera/list/?series=661", "date": "2020-02-05T13:04:15", "name": "Support loading IPAs from the build tree", "version": 1, "mbox": "https://patchwork.libcamera.org/series/661/mbox/" } ], "comments": "https://patchwork.libcamera.org/api/patches/2771/comments/", "check": "pending", "checks": "https://patchwork.libcamera.org/api/patches/2771/checks/", "tags": {}, "headers": { "Return-Path": "<kieran.bingham@ideasonboard.com>", "Received": [ "from perceval.ideasonboard.com (perceval.ideasonboard.com\n\t[213.167.242.64])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTPS id 03C8760444\n\tfor <libcamera-devel@lists.libcamera.org>;\n\tWed, 5 Feb 2020 14:04:26 +0100 (CET)", "from localhost.localdomain\n\t(cpc89242-aztw30-2-0-cust488.18-1.cable.virginm.net [86.31.129.233])\n\tby perceval.ideasonboard.com (Postfix) with ESMTPSA id 9507352F;\n\tWed, 5 Feb 2020 14:04:25 +0100 (CET)" ], "DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com;\n\ts=mail; t=1580907865;\n\tbh=t9cqojs86Tp/WE1nUKpMnhO2V9ifQ5SLP+hE2LbOlfU=;\n\th=From:To:Cc:Subject:Date:In-Reply-To:References:From;\n\tb=gy7dV5aPaxu6M6pwlewS4gAGaN4yy+mzKZb7KtnholQHqhoNWe4RdpaN5GBRqPXMj\n\tlJxgQBoLAUuLOSyXrLDLoUXw/JkJsK2gZMtbIGfwbInRJh4xHZUKaTco/B/+/7xqGC\n\tBpOUcq4guWm4mpmy/yntlMp3dI/R1qnVeiz31fFM=", "From": "Kieran Bingham <kieran.bingham@ideasonboard.com>", "To": "LibCamera Devel <libcamera-devel@lists.libcamera.org>", "Date": "Wed, 5 Feb 2020 13:04:16 +0000", "Message-Id": "<20200205130420.8736-2-kieran.bingham@ideasonboard.com>", "X-Mailer": "git-send-email 2.20.1", "In-Reply-To": "<20200205130420.8736-1-kieran.bingham@ideasonboard.com>", "References": "<20200205130420.8736-1-kieran.bingham@ideasonboard.com>", "MIME-Version": "1.0", "Content-Transfer-Encoding": "8bit", "Subject": "[libcamera-devel] [PATCH 1/5] libcamera: utils: Provide helper to\n\tget dynamic library runpath", "X-BeenThere": "libcamera-devel@lists.libcamera.org", "X-Mailman-Version": "2.1.29", "Precedence": "list", "List-Id": "<libcamera-devel.lists.libcamera.org>", "List-Unsubscribe": "<https://lists.libcamera.org/options/libcamera-devel>,\n\t<mailto:libcamera-devel-request@lists.libcamera.org?subject=unsubscribe>", "List-Archive": "<https://lists.libcamera.org/pipermail/libcamera-devel/>", "List-Post": "<mailto:libcamera-devel@lists.libcamera.org>", "List-Help": "<mailto:libcamera-devel-request@lists.libcamera.org?subject=help>", "List-Subscribe": "<https://lists.libcamera.org/listinfo/libcamera-devel>,\n\t<mailto:libcamera-devel-request@lists.libcamera.org?subject=subscribe>", "X-List-Received-Date": "Wed, 05 Feb 2020 13:04:26 -0000" }, "content": "Provide a helper that will identify the DT_RUNPATH string from the\nELF dynamic library string table entries.\n\nSigned-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>\n---\n src/libcamera/include/utils.h | 1 +\n src/libcamera/utils.cpp | 26 ++++++++++++++++++++++++++\n 2 files changed, 27 insertions(+)", "diff": "diff --git a/src/libcamera/include/utils.h b/src/libcamera/include/utils.h\nindex e467eb21c518..069b327bb436 100644\n--- a/src/libcamera/include/utils.h\n+++ b/src/libcamera/include/utils.h\n@@ -33,6 +33,7 @@ namespace utils {\n const char *basename(const char *path);\n \n char *secure_getenv(const char *name);\n+const char *get_runpath();\n \n template<class InputIt1, class InputIt2>\n unsigned int set_overlap(InputIt1 first1, InputIt1 last1,\ndiff --git a/src/libcamera/utils.cpp b/src/libcamera/utils.cpp\nindex 4beffdab5eb6..e48cf2b6a48e 100644\n--- a/src/libcamera/utils.cpp\n+++ b/src/libcamera/utils.cpp\n@@ -7,7 +7,9 @@\n \n #include \"utils.h\"\n \n+#include <elf.h>\n #include <iomanip>\n+#include <link.h>\n #include <sstream>\n #include <stdlib.h>\n #include <string.h>\n@@ -70,6 +72,30 @@ char *secure_getenv(const char *name)\n #endif\n }\n \n+/**\n+ * \\brief Obtain the runpath string from the dynamic symbol table\n+ * \\returns a const char pointer to the runpath entry in the elf string table\n+ * or NULL if it is not found.\n+ */\n+const char *get_runpath()\n+{\n+\tconst ElfW(Dyn) *dyn = _DYNAMIC;\n+\tconst ElfW(Dyn) *runpath = NULL;\n+\tconst char *strtab = NULL;\n+\n+\tfor (; dyn->d_tag != DT_NULL; ++dyn) {\n+\t\tif (dyn->d_tag == DT_STRTAB)\n+\t\t\tstrtab = reinterpret_cast<const char *>(dyn->d_un.d_val);\n+\t\telse if (dyn->d_tag == DT_RUNPATH)\n+\t\t\trunpath = dyn;\n+\t}\n+\n+\tif (strtab && runpath)\n+\t\treturn strtab + runpath->d_un.d_val;\n+\n+\treturn NULL;\n+}\n+\n /**\n * \\fn libcamera::utils::set_overlap(InputIt1 first1, InputIt1 last1,\n *\t\t\t\t InputIt2 first2, InputIt2 last2)\n", "prefixes": [ "libcamera-devel", "1/5" ] }