From patchwork Mon Nov 11 13:10:56 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christophe JAILLET X-Patchwork-Id: 842642 Received: from smtp.smtpout.orange.fr (smtp-21.smtpout.orange.fr [80.12.242.21]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id D664E158558; Mon, 11 Nov 2024 13:11:10 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=80.12.242.21 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1731330675; cv=none; b=cKdhfNqYwN+MaQ/yesD0vF5rZsp9v8L14Jb+q7JtYi6CQJS5ZjzO1vpi/naOMLg5RqMW+SGnaA/SQNfFQu7IzXNwe18titM5DkiRi6/iLGrHEh76ZnKvVrO651cqYrZz1s+dd2fsOnNpTd3eLhDvJJV2i1/lPkDYW7N7SsSonec= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1731330675; c=relaxed/simple; bh=pcvUj6hiQws2lylwq5PlCi5h3lu5Ev1MrCrkJ29r3H8=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=XXQ9k26M4NBkl+dX8UEKZbKiMCjlQHkKOb0IKw0Zpe5i990f10RrQPigPFhAro02rXf258czkKjDonZyqn2NyQdCMzEBbKsa3ozNtjv47GajflrSdr0r2tJRSVHzCnD3Wjp2xt02SUDYrtrlKO3hmaxSvsrTfYRsTq+pAGeIpak= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=wanadoo.fr; spf=pass smtp.mailfrom=wanadoo.fr; dkim=pass (2048-bit key) header.d=wanadoo.fr header.i=@wanadoo.fr header.b=KuO2EG7h; arc=none smtp.client-ip=80.12.242.21 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=wanadoo.fr Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=wanadoo.fr Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=wanadoo.fr header.i=@wanadoo.fr header.b="KuO2EG7h" Received: from localhost.localdomain ([90.11.132.44]) by smtp.orange.fr with ESMTPA id AUCBtWVCtj1r8AUCCtNM7Z; Mon, 11 Nov 2024 14:11:08 +0100 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=wanadoo.fr; s=t20230301; t=1731330668; bh=k6+U7vZ/tn1IEQn4DKT3rhNOeOOohqN78QfNcyAx/YQ=; h=From:To:Subject:Date:Message-ID:MIME-Version; b=KuO2EG7hxR5vLmuSpVztvlr/EJ4dUoRAmCfUZ/KdlWxMyiPuzc0Pp2QtyOVGopIVj H75lqaf4Bx4Cu8dPOeZAVDDtKMB3MPC6btSQFd2Xn3EMeTNUCcbr/3/JOzjunAFoof cOyM6NBZ4g6qakikw2E26yXblZ8pm0OJw4fuuE5hTqQDEILhc3e2NfD8vADEq8ebqG B38T2AFtOYhGYD0uJflxSRHjLhhSvkrppeK1cBJ7Lg8ngRRDLk3f0/dVMBuQVyCCa8 bWkUo8ZOqGpRGhg7lmDCBJvV33mTnTFZtC75qGbCMkP5FJPJfJS+LTJNQH18cYHu6j tUJyDvoXyrSeA== X-ME-Helo: localhost.localdomain X-ME-Auth: Y2hyaXN0b3BoZS5qYWlsbGV0QHdhbmFkb28uZnI= X-ME-Date: Mon, 11 Nov 2024 14:11:08 +0100 X-ME-IP: 90.11.132.44 From: Christophe JAILLET To: Bodo Stroesser , "Martin K. Petersen" Cc: linux-kernel@vger.kernel.org, kernel-janitors@vger.kernel.org, Christophe JAILLET , linux-scsi@vger.kernel.org, target-devel@vger.kernel.org Subject: [PATCH] scsi: target: tcmu: Constify some structures Date: Mon, 11 Nov 2024 14:10:56 +0100 Message-ID: X-Mailer: git-send-email 2.47.0 Precedence: bulk X-Mailing-List: linux-scsi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 'struct nla_policy' and 'struct match_table_t' are not modified in this driver. Constifying these structures moves some data to a read-only section, so increase overall security, especially when the structure holds some function pointers, which is the case of struct nla_policy. On a x86_64, with allmodconfig: Before: ====== text data bss dec hex filename 93188 6933 338 100459 1886b drivers/target/target_core_user.o After: ===== text data bss dec hex filename 93508 6581 338 100427 1884b drivers/target/target_core_user.o Signed-off-by: Christophe JAILLET Reviewed-by: Bodo Stroesser --- Compile tested only --- drivers/target/target_core_user.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/target/target_core_user.c b/drivers/target/target_core_user.c index 717931267bda..0f5d820af119 100644 --- a/drivers/target/target_core_user.c +++ b/drivers/target/target_core_user.c @@ -361,7 +361,7 @@ static const struct genl_multicast_group tcmu_mcgrps[] = { [TCMU_MCGRP_CONFIG] = { .name = "config", }, }; -static struct nla_policy tcmu_attr_policy[TCMU_ATTR_MAX+1] = { +static const struct nla_policy tcmu_attr_policy[TCMU_ATTR_MAX + 1] = { [TCMU_ATTR_DEVICE] = { .type = NLA_STRING }, [TCMU_ATTR_MINOR] = { .type = NLA_U32 }, [TCMU_ATTR_CMD_STATUS] = { .type = NLA_S32 }, @@ -2430,7 +2430,7 @@ enum { Opt_cmd_ring_size_mb, Opt_err, }; -static match_table_t tokens = { +static const match_table_t tokens = { {Opt_dev_config, "dev_config=%s"}, {Opt_dev_size, "dev_size=%s"}, {Opt_hw_block_size, "hw_block_size=%d"},