{"id":808919,"url":"http://patchwork.ozlabs.org/api/1.0/patches/808919/?format=json","project":{"id":41,"url":"http://patchwork.ozlabs.org/api/1.0/projects/41/?format=json","name":"GNU C Library","link_name":"glibc","list_id":"libc-alpha.sourceware.org","list_email":"libc-alpha@sourceware.org","web_url":"","scm_url":"","webscm_url":""},"msgid":"<20170901180029.9527-50-hjl.tools@gmail.com>","date":"2017-09-01T18:00:20","name":"[49/58] Hide internal __nis_hash function [BZ #18822]","commit_ref":null,"pull_url":null,"state":"new","archived":false,"hash":"b77a4595a7d8c8595e991df6ac1fec8bac2758bb","submitter":{"id":4387,"url":"http://patchwork.ozlabs.org/api/1.0/people/4387/?format=json","name":"H.J. Lu","email":"hjl.tools@gmail.com"},"delegate":null,"mbox":"http://patchwork.ozlabs.org/project/glibc/patch/20170901180029.9527-50-hjl.tools@gmail.com/mbox/","series":[{"id":1088,"url":"http://patchwork.ozlabs.org/api/1.0/series/1088/?format=json","date":"2017-09-01T18:00:21","name":"Hide internal functions in libc.so","version":1,"mbox":"http://patchwork.ozlabs.org/series/1088/mbox/"}],"check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/808919/checks/","tags":{},"headers":{"Return-Path":"","X-Original-To":"incoming@patchwork.ozlabs.org","Delivered-To":["patchwork-incoming@bilbo.ozlabs.org","mailing list libc-alpha@sourceware.org"],"Authentication-Results":["ozlabs.org;\n\tspf=pass (mailfrom) smtp.mailfrom=sourceware.org\n\t(client-ip=209.132.180.131; helo=sourceware.org;\n\tenvelope-from=libc-alpha-return-84103-incoming=patchwork.ozlabs.org@sourceware.org;\n\treceiver=)","ozlabs.org; dkim=pass (1024-bit key;\n\tsecure) header.d=sourceware.org header.i=@sourceware.org\n\theader.b=\"gAdhD0jA\"; dkim-atps=neutral","sourceware.org; auth=none"],"Received":["from sourceware.org (server1.sourceware.org [209.132.180.131])\n\t(using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256\n\tbits)) (No client certificate requested)\n\tby ozlabs.org (Postfix) with ESMTPS id 3xkS2x6dvYz9s7g\n\tfor ;\n\tSat, 2 Sep 2017 04:10:33 +1000 (AEST)","(qmail 91892 invoked by alias); 1 Sep 2017 18:01:29 -0000","(qmail 91760 invoked by uid 89); 1 Sep 2017 18:01:29 -0000"],"DomainKey-Signature":"a=rsa-sha1; c=nofws; d=sourceware.org; h=list-id\n\t:list-unsubscribe:list-subscribe:list-archive:list-post\n\t:list-help:sender:from:to:subject:date:message-id:in-reply-to\n\t:references; q=dns; s=default; b=eCTjLl1qRF5eguGBg9lEMqm8tZ0dDRx\n\tC21u9zKjgWSLJPaOvdUqc/7rXZklbN9SaasceAo7jKnvEFe2ofwr/x6fJoSqBkoO\n\tjw35pdE9Rf80SS044ih+3txkRi/urZi+VH0jOfuK+cyoMiVJzAXjmQibKBkT1GNq\n\t/FuNZkIK+xYk=","DKIM-Signature":"v=1; a=rsa-sha1; c=relaxed; d=sourceware.org; h=list-id\n\t:list-unsubscribe:list-subscribe:list-archive:list-post\n\t:list-help:sender:from:to:subject:date:message-id:in-reply-to\n\t:references; s=default; bh=Qdm8SoOigIvmOvQrbjPjee9OSiU=; b=gAdhD\n\t0jAhFgZzVN3ainv7rMOHs/QJygLE4hin5Ds5HOskrN/V4+fFUTfU8kMHxT7WaD4n\n\tIINlLR/AXFtCIHs1YI8rnbSFmvPltmPL2J7L4HwZ6z1iudJY2cIbnzNjwADtGdaW\n\tO1EdJuWfpxpx8bCjDbJZhlxicBs11riE3JDq+4=","Mailing-List":"contact libc-alpha-help@sourceware.org; run by ezmlm","Precedence":"bulk","List-Id":"","List-Unsubscribe":"","List-Subscribe":"","List-Archive":"","List-Post":"","List-Help":",\n\t","Sender":"libc-alpha-owner@sourceware.org","X-Virus-Found":"No","X-Spam-SWARE-Status":"No, score=-26.2 required=5.0 tests=BAYES_00,\n\tFREEMAIL_FROM, GIT_PATCH_0, GIT_PATCH_1, GIT_PATCH_2,\n\tGIT_PATCH_3,\n\tSPF_SOFTFAIL autolearn=ham version=3.3.2 spammy=H*m:gmail","X-HELO":"mga02.intel.com","X-ExtLoop1":"1","From":"\"H.J. Lu\" ","To":"libc-alpha@sourceware.org","Subject":"[PATCH 49/58] Hide internal __nis_hash function [BZ #18822]","Date":"Fri, 1 Sep 2017 11:00:20 -0700","Message-Id":"<20170901180029.9527-50-hjl.tools@gmail.com>","In-Reply-To":"<20170901180029.9527-1-hjl.tools@gmail.com>","References":"<20170901180029.9527-1-hjl.tools@gmail.com>"},"content":"Hide internal __nis_hash function to allow direct access within libc.so\nand libc.a without using GOT nor PLT.\n\n\t[BZ #18822]\n\t* nscd/nscd_helper.c (__nis_hash): New prototype.\n---\n nscd/nscd_helper.c | 5 +++++\n 1 file changed, 5 insertions(+)","diff":"diff --git a/nscd/nscd_helper.c b/nscd/nscd_helper.c\nindex a225623f92..56e6d1421f 100644\n--- a/nscd/nscd_helper.c\n+++ b/nscd/nscd_helper.c\n@@ -443,6 +443,11 @@ __nscd_get_map_ref (request_type type, const char *name,\n #define MINIMUM_HASHENTRY_SIZE \\\n (offsetof (struct hashentry, dellist) + sizeof (int32_t))\n \n+/* __nis_hash is defined in nis_hash.c which is included both libnsl\n+ and libc. Since the one in libnsl is exported and the one in libc\n+ is hidden, __nis_hash is marked as hidden where it is referenced,\n+ not where it is defined. */\n+extern __typeof (__nis_hash) __nis_hash attribute_hidden;\n \n /* Don't return const struct datahead *, as eventhough the record\n is normally constant, it can change arbitrarily during nscd\n","prefixes":["49/58"]}