From patchwork Wed Dec 1 00:48:42 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nicolai Stange X-Patchwork-Id: 519431 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 428AFC433EF for ; Wed, 1 Dec 2021 00:49:32 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1345891AbhLAAws (ORCPT ); Tue, 30 Nov 2021 19:52:48 -0500 Received: from smtp-out1.suse.de ([195.135.220.28]:45980 "EHLO smtp-out1.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1345874AbhLAAwq (ORCPT ); Tue, 30 Nov 2021 19:52:46 -0500 Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by smtp-out1.suse.de (Postfix) with ESMTPS id 782FF212BA; Wed, 1 Dec 2021 00:49:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1638319765; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=ocpi9CYZRjBEqb5t4wY3qhR39QcUEQ6rBsxEFQGzL80=; b=gTefI4RHuzVd9hpb+YZVpcdUbz50CGXnYTjz0HP63KR5mOSxPmgdmO6g0Ze+hWmtmKT4ra fcyyJzcG58Bn6pf5akcykhRfnbanUyCYdT5J8KqtAYFIfBWbsMRsYKC06iFPZy63df+wWo ChialyB4Q+t92Q68z+rYA5ScxMI4hOA= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1638319765; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=ocpi9CYZRjBEqb5t4wY3qhR39QcUEQ6rBsxEFQGzL80=; b=WfpZsTrGXMmVQ3/+xBe+DXtDVOcS2UlZxk/nZNOizv6QMupvG5EpmKSBCBFBXMLbhVq9Mh PrRZOkhTXFrM1uCA== Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by imap2.suse-dmz.suse.de (Postfix) with ESMTPS id 6258013C10; Wed, 1 Dec 2021 00:49:25 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id QRxbFpXGpmHhKAAAMHmgww (envelope-from ); Wed, 01 Dec 2021 00:49:25 +0000 From: Nicolai Stange To: Herbert Xu , "David S. Miller" Cc: =?utf-8?q?Stephan_M=C3=BCller?= , Hannes Reinecke , Torsten Duwe , Zaibo Xu , Giovanni Cabiddu , David Howells , Jarkko Sakkinen , linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org, qat-linux@intel.com, keyrings@vger.kernel.org, Nicolai Stange Subject: [PATCH 02/18] crypto: dh - constify struct dh's pointer members Date: Wed, 1 Dec 2021 01:48:42 +0100 Message-Id: <20211201004858.19831-3-nstange@suse.de> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20211201004858.19831-1-nstange@suse.de> References: <20211201004858.19831-1-nstange@suse.de> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-crypto@vger.kernel.org struct dh contains several pointer members corresponding to DH parameters: ->key, ->p and ->g. A subsequent commit will make the struct dh deserialization function, crypto_dh_decode_key(), to set these to constant static storage arrays for some of the well-known safe-prime groups. Turn the struct dh pointer members' types into "pointer to const" in preparation for this. Signed-off-by: Nicolai Stange Reviewed-by: Hannes Reinecke --- include/crypto/dh.h | 6 +++--- security/keys/dh.c | 2 +- 2 files changed, 4 insertions(+), 4 deletions(-) diff --git a/include/crypto/dh.h b/include/crypto/dh.h index 2585f0e6bb69..67f3f6bca527 100644 --- a/include/crypto/dh.h +++ b/include/crypto/dh.h @@ -30,9 +30,9 @@ * @g_size: Size of DH generator G */ struct dh { - void *key; - void *p; - void *g; + const void *key; + const void *p; + const void *g; unsigned int key_size; unsigned int p_size; unsigned int g_size; diff --git a/security/keys/dh.c b/security/keys/dh.c index 1abfa70ed6e1..a58f6fb9f6db 100644 --- a/security/keys/dh.c +++ b/security/keys/dh.c @@ -14,7 +14,7 @@ #include #include "internal.h" -static ssize_t dh_data_from_key(key_serial_t keyid, void **data) +static ssize_t dh_data_from_key(key_serial_t keyid, const void **data) { struct key *key; key_ref_t key_ref;