From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752665AbbE0FVt (ORCPT ); Wed, 27 May 2015 01:21:49 -0400 Received: from szxga01-in.huawei.com ([58.251.152.64]:6923 "EHLO szxga01-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752259AbbE0FV2 (ORCPT ); Wed, 27 May 2015 01:21:28 -0400 From: Wang Nan To: , , , , , , , , , CC: , , Subject: [RFC PATCH v4 11/29] bpf tools: Collect symbol table from SHT_SYMTAB section Date: Wed, 27 May 2015 05:19:46 +0000 Message-ID: <1432704004-171454-12-git-send-email-wangnan0@huawei.com> X-Mailer: git-send-email 1.8.3.4 In-Reply-To: <1432704004-171454-1-git-send-email-wangnan0@huawei.com> References: <1432704004-171454-1-git-send-email-wangnan0@huawei.com> MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [10.107.197.200] X-CFilter-Loop: Reflected Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This patch collects symbols section. This section is useful when linking ELF maps. Signed-off-by: Wang Nan --- tools/lib/bpf/libbpf.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/tools/lib/bpf/libbpf.c b/tools/lib/bpf/libbpf.c index da83766..d89fd42 100644 --- a/tools/lib/bpf/libbpf.c +++ b/tools/lib/bpf/libbpf.c @@ -95,6 +95,7 @@ struct bpf_object { int fd; Elf *elf; GElf_Ehdr ehdr; + Elf_Data *symbols; } efile; char path[]; }; @@ -124,6 +125,7 @@ static void bpf_object__elf_finish(struct bpf_object *obj) elf_end(obj->efile.elf); obj->efile.elf = NULL; } + obj->efile.symbols = NULL; zclose(obj->efile.fd); } @@ -309,6 +311,14 @@ static int bpf_object__elf_collect(struct bpf_object *obj) else if (strcmp(name, "maps") == 0) err = bpf_object__init_maps(obj, data->d_buf, data->d_size); + else if (sh.sh_type == SHT_SYMTAB) { + if (obj->efile.symbols) { + pr_warning("bpf: multiple SYMTAB in %s\n", + obj->path); + err = -EEXIST; + } else + obj->efile.symbols = data; + } if (err) goto out; } -- 1.8.3.4