From patchwork Thu Dec 9 09:03:42 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nicolai Stange X-Patchwork-Id: 522605 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 CCADBC433EF for ; Thu, 9 Dec 2021 09:04:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233520AbhLIJH7 (ORCPT ); Thu, 9 Dec 2021 04:07:59 -0500 Received: from smtp-out1.suse.de ([195.135.220.28]:54904 "EHLO smtp-out1.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235619AbhLIJHx (ORCPT ); Thu, 9 Dec 2021 04:07:53 -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 336A9210FF; Thu, 9 Dec 2021 09:04:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1639040659; 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=vtYiEPHXls17vWeFOHyJJdw2pe0iE2gBR9T4TfZ+qUs=; b=UgFqA1tXi6mHZp5+9YSh3JZYxHYm0qsB5+tvznzranalh48Y1k9NAo+oiVLshR8TZ4QEQZ 7brOk14/ZuwJLxdfA9+7fLXb+7md/7o7u6EFe4uhvsF4IqCBQqiFcglVugbyP0oXv8oUKV UgM7VXw8x7/njx4p58oL/8FmDXB38kk= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1639040659; 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=vtYiEPHXls17vWeFOHyJJdw2pe0iE2gBR9T4TfZ+qUs=; b=EIJTKWHKaT+1++gZrOHXxFt1p0nbqKUVbSE9KzkUOzY89emJwMO6XoJHnxXdD8iD46l9q+ XIf0m0ua3S+QyPDg== 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 1520A13A86; Thu, 9 Dec 2021 09:04:19 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id 0RwABJPGsWGNaQAAMHmgww (envelope-from ); Thu, 09 Dec 2021 09:04:19 +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 v2 02/18] crypto: dh - constify struct dh's pointer members Date: Thu, 9 Dec 2021 10:03:42 +0100 Message-Id: <20211209090358.28231-3-nstange@suse.de> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20211209090358.28231-1-nstange@suse.de> References: <20211209090358.28231-1-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;