From patchwork Fri Sep 1 18:00:20 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "H.J. Lu" X-Patchwork-Id: 22563 Received: (qmail 91892 invoked by alias); 1 Sep 2017 18:01:29 -0000 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: , Sender: libc-alpha-owner@sourceware.org Delivered-To: mailing list libc-alpha@sourceware.org Received: (qmail 91760 invoked by uid 89); 1 Sep 2017 18:01:29 -0000 Authentication-Results: sourceware.org; auth=none X-Virus-Found: No X-Spam-SWARE-Status: No, score=-26.2 required=5.0 tests=BAYES_00, FREEMAIL_FROM, GIT_PATCH_0, GIT_PATCH_1, GIT_PATCH_2, GIT_PATCH_3, SPF_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> Hide internal __nis_hash function to allow direct access within libc.so and libc.a without using GOT nor PLT. [BZ #18822] * nscd/nscd_helper.c (__nis_hash): New prototype. --- nscd/nscd_helper.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/nscd/nscd_helper.c b/nscd/nscd_helper.c index a225623f92..56e6d1421f 100644 --- a/nscd/nscd_helper.c +++ b/nscd/nscd_helper.c @@ -443,6 +443,11 @@ __nscd_get_map_ref (request_type type, const char *name, #define MINIMUM_HASHENTRY_SIZE \ (offsetof (struct hashentry, dellist) + sizeof (int32_t)) +/* __nis_hash is defined in nis_hash.c which is included both libnsl + and libc. Since the one in libnsl is exported and the one in libc + is hidden, __nis_hash is marked as hidden where it is referenced, + not where it is defined. */ +extern __typeof (__nis_hash) __nis_hash attribute_hidden; /* Don't return const struct datahead *, as eventhough the record is normally constant, it can change arbitrarily during nscd