From patchwork Sat Sep 30 05:00:22 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Wedson Almeida Filho X-Patchwork-Id: 13404957 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 D5566E77357 for ; Sat, 30 Sep 2023 05:03:20 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234090AbjI3FDT (ORCPT ); Sat, 30 Sep 2023 01:03:19 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50814 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234184AbjI3FCo (ORCPT ); Sat, 30 Sep 2023 01:02:44 -0400 Received: from mail-pf1-x42a.google.com (mail-pf1-x42a.google.com [IPv6:2607:f8b0:4864:20::42a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0C9CE10FD; Fri, 29 Sep 2023 22:01:59 -0700 (PDT) Received: by mail-pf1-x42a.google.com with SMTP id d2e1a72fcca58-690bd8f89baso12039926b3a.2; Fri, 29 Sep 2023 22:01:59 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1696050118; x=1696654918; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=hkmcdMm12QbRMkcwPXJsldRA3LZpvW1XQ5QQ1oyLq3Q=; b=RxY+KqYdSUGCZ63RUITbenHyMOEDNmO3pSOrLr1XxtI7FrWkxzte5exlMEtYRal3Ys 5BS4lf7O/WyeUdEk8CmX3TwS5eduZswvnOCcw9zlhjOWABca+VX/GEK3p62qZuIM46al wqG2PFikr1A/0Fp3kC11uqG1Unza/Bu3jDbmt90cRaJF/0oZEbp46yGzRJgd8DgZ7yHV q5VCItp+QRVRfEnxI5gQJnn7IprZWNU1iDy+v5m+zzuTjc87R6KUxOtnR1/JG5kXVhUw iKVRCmv4H2RVetzmOy0DAmOLZwaV381IaKfuSPH1AUB4Xz1UCU4m2Zvj4xZaqulLyUn6 r2Cg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1696050118; x=1696654918; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=hkmcdMm12QbRMkcwPXJsldRA3LZpvW1XQ5QQ1oyLq3Q=; b=r/WowLRJx3/2qFwFWhHQ5V04KAzIuiuj/M3zywVNtil/OlDUS7jaKPvJ2wjAMsWcW4 W/ciccC++0+eHBV7pFZpHk33WPf9/euxX29lQL5J9U0UYPfrCs7PJURLtSH1cDUHvOnB WDj/brPdvkzPoXPEkia/Mk77B38ohjwIw/h3Ogq/XTw7I5YWBM1OQJy2/Zs9pvaLp9I9 ZyHiGgpVFuiuMHvyvK/USRb3togU1dlPRVJe6AIroaLZyEMsCsuH8SEDfc537FQ4DVhZ 4Aj8LToqNGGY2zRSyvIacLRsfOTS6P+S9qCeXt480cKGPghKOvnSzMl5CamqambMVZK2 XUYQ== X-Gm-Message-State: AOJu0Yzxg5ZebeBDSLHKhLOV8hhpLUeJGrHBTHBZlbZ0Ak1bl7tsnfpE pWik/x3whY/mpsEM3F9obgQ= X-Google-Smtp-Source: AGHT+IFImlr28SMYKxU0nbWofyYiwpfcz2Z7YacvsYNMXPTB8Qo8TCN72xecAmOwWNdopWih7rr/6w== X-Received: by 2002:a05:6a20:734a:b0:14d:4ab5:5e34 with SMTP id v10-20020a056a20734a00b0014d4ab55e34mr6205874pzc.51.1696050118456; Fri, 29 Sep 2023 22:01:58 -0700 (PDT) Received: from wedsonaf-dev.home.lan ([189.124.190.154]) by smtp.googlemail.com with ESMTPSA id y10-20020a17090322ca00b001c322a41188sm392136plg.117.2023.09.29.22.01.55 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 29 Sep 2023 22:01:58 -0700 (PDT) From: Wedson Almeida Filho To: Alexander Viro , Christian Brauner , linux-fsdevel@vger.kernel.org Cc: linux-kernel@vger.kernel.org, Wedson Almeida Filho , Trond Myklebust , Anna Schumaker , linux-nfs@vger.kernel.org Subject: [PATCH 18/29] nfs: move nfs4_xattr_handlers to .rodata Date: Sat, 30 Sep 2023 02:00:22 -0300 Message-Id: <20230930050033.41174-19-wedsonaf@gmail.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230930050033.41174-1-wedsonaf@gmail.com> References: <20230930050033.41174-1-wedsonaf@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org From: Wedson Almeida Filho This makes it harder for accidental or malicious changes to nfs4_xattr_handlers at runtime. Cc: Trond Myklebust Cc: Anna Schumaker Cc: linux-nfs@vger.kernel.org Signed-off-by: Wedson Almeida Filho --- fs/nfs/nfs.h | 2 +- fs/nfs/nfs4_fs.h | 2 +- fs/nfs/nfs4proc.c | 2 +- 3 files changed, 3 insertions(+), 3 deletions(-) diff --git a/fs/nfs/nfs.h b/fs/nfs/nfs.h index 5ba00610aede..0d3ce0460e35 100644 --- a/fs/nfs/nfs.h +++ b/fs/nfs/nfs.h @@ -18,7 +18,7 @@ struct nfs_subversion { const struct rpc_version *rpc_vers; /* NFS version information */ const struct nfs_rpc_ops *rpc_ops; /* NFS operations */ const struct super_operations *sops; /* NFS Super operations */ - const struct xattr_handler **xattr; /* NFS xattr handlers */ + const struct xattr_handler * const *xattr; /* NFS xattr handlers */ struct list_head list; /* List of NFS versions */ }; diff --git a/fs/nfs/nfs4_fs.h b/fs/nfs/nfs4_fs.h index 4c9f8bd866ab..28499a0da4c3 100644 --- a/fs/nfs/nfs4_fs.h +++ b/fs/nfs/nfs4_fs.h @@ -315,7 +315,7 @@ extern struct rpc_clnt *nfs4_proc_lookup_mountpoint(struct inode *, struct nfs_fh *, struct nfs_fattr *); extern int nfs4_proc_secinfo(struct inode *, const struct qstr *, struct nfs4_secinfo_flavors *); -extern const struct xattr_handler *nfs4_xattr_handlers[]; +extern const struct xattr_handler * const nfs4_xattr_handlers[]; extern int nfs4_set_rw_stateid(nfs4_stateid *stateid, const struct nfs_open_context *ctx, const struct nfs_lock_context *l_ctx, diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 832fa226b8f2..4557a14a596c 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -10740,7 +10740,7 @@ static const struct xattr_handler nfs4_xattr_nfs4_user_handler = { }; #endif -const struct xattr_handler *nfs4_xattr_handlers[] = { +const struct xattr_handler * const nfs4_xattr_handlers[] = { &nfs4_xattr_nfs4_acl_handler, #if defined(CONFIG_NFS_V4_1) &nfs4_xattr_nfs4_dacl_handler,