From patchwork Sun Mar 17 16:28:21 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Darrick J. Wong" X-Patchwork-Id: 13594623 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id B43DA1E527; Sun, 17 Mar 2024 16:28:21 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1710692901; cv=none; b=YGPN4Hj+1wylIY3uFB06TOndxFcgQZAS/4g9vMOFCJuU5+dN13q9v4bvhMcWPjNI9iKV/DjkKnmLCh/bH1dCgVyskZ8fnixGZK7AifV0q+J4yutLHnx08xFqg5pKPuGrpCD+5N1xJ7zkgA3Dqr1DmtqQotXsQn8Zcv5g44U6g/s= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1710692901; c=relaxed/simple; bh=YV2FpcHp1T9nZAjzqj8IXFCQoFgRWZQjMLPyND0pLlc=; h=Date:Subject:From:To:Cc:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=ZLunEslmyFxRamxmDdeFzM8rrTVdCx582JCWUTMbVoGX5isUlmUMjgXczmSMSklFOku7XyBEPYzpmXMgJbIs88Q2Ye85AVsDUmlWvp1KJnCgVOVpxyOcQjpfBWnl8gfkfFvcVT6WdoE+Gai/F/0Xg5KMfRKzyF3x+3aR6sgrHB8= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=imoxCkaB; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="imoxCkaB" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 8DF4CC433C7; Sun, 17 Mar 2024 16:28:21 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1710692901; bh=YV2FpcHp1T9nZAjzqj8IXFCQoFgRWZQjMLPyND0pLlc=; h=Date:Subject:From:To:Cc:In-Reply-To:References:From; b=imoxCkaB5uzwb3AbG0LnzD/W/7H8rZ0WIp7XDIT3i1CbaYayS9TbN18Kk7XkvV1ZM u3hjDGvmDZ2XlWzeOV5z+QHj/IX4e0eCuaoHPjL3FOXg60LREtcJygTlVQTA103FU5 Ayy60FEweJElomtrNj9MXFf3DFUDdEbTpyPVp42kzsUgAi1o9cjIlj4tVf3mlWRVV/ P2eIOvvCQ5WbuiL3yEO+r+GaGJogteVAseuhoDOEYdE3nozkOsoUy4/YVCLoi0xFXB qL8N7uU7tlmAtcrK+QYciOhqr/oCeIZXCP0vaGg6z+GreGNrdLFPtzDp8HJxFHilxk T1Z60IVj3liug== Date: Sun, 17 Mar 2024 09:28:21 -0700 Subject: [PATCH 19/40] xfs: add attribute type for fs-verity From: "Darrick J. Wong" To: djwong@kernel.org, ebiggers@kernel.org, aalbersh@redhat.com Cc: linux-fsdevel@vger.kernel.org, fsverity@lists.linux.dev, linux-xfs@vger.kernel.org Message-ID: <171069246218.2684506.7049031355830726932.stgit@frogsfrogsfrogs> In-Reply-To: <171069245829.2684506.10682056181611490828.stgit@frogsfrogsfrogs> References: <171069245829.2684506.10682056181611490828.stgit@frogsfrogsfrogs> User-Agent: StGit/0.19 Precedence: bulk X-Mailing-List: fsverity@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Andrey Albershteyn The Merkle tree blocks and descriptor are stored in the extended attributes of the inode. Add new attribute type for fs-verity metadata. Add XFS_ATTR_INTERNAL_MASK to skip parent pointer and fs-verity attributes as those are only for internal use. While we're at it add a few comments in relevant places that internally visible attributes are not suppose to be handled via interface defined in xfs_xattr.c. Signed-off-by: Andrey Albershteyn Reviewed-by: Darrick J. Wong Signed-off-by: Darrick J. Wong --- fs/xfs/libxfs/xfs_da_format.h | 10 +++++++++- fs/xfs/libxfs/xfs_log_format.h | 1 + fs/xfs/xfs_ioctl.c | 5 +++++ fs/xfs/xfs_trace.h | 3 ++- fs/xfs/xfs_xattr.c | 10 ++++++++++ 5 files changed, 27 insertions(+), 2 deletions(-) diff --git a/fs/xfs/libxfs/xfs_da_format.h b/fs/xfs/libxfs/xfs_da_format.h index 839df0e5401b..28d4ac6fa156 100644 --- a/fs/xfs/libxfs/xfs_da_format.h +++ b/fs/xfs/libxfs/xfs_da_format.h @@ -715,14 +715,22 @@ struct xfs_attr3_leafblock { #define XFS_ATTR_ROOT_BIT 1 /* limit access to trusted attrs */ #define XFS_ATTR_SECURE_BIT 2 /* limit access to secure attrs */ #define XFS_ATTR_PARENT_BIT 3 /* parent pointer attrs */ +#define XFS_ATTR_VERITY_BIT 4 /* verity merkle tree and descriptor */ #define XFS_ATTR_INCOMPLETE_BIT 7 /* attr in middle of create/delete */ #define XFS_ATTR_LOCAL (1u << XFS_ATTR_LOCAL_BIT) #define XFS_ATTR_ROOT (1u << XFS_ATTR_ROOT_BIT) #define XFS_ATTR_SECURE (1u << XFS_ATTR_SECURE_BIT) #define XFS_ATTR_PARENT (1u << XFS_ATTR_PARENT_BIT) +#define XFS_ATTR_VERITY (1u << XFS_ATTR_VERITY_BIT) #define XFS_ATTR_INCOMPLETE (1u << XFS_ATTR_INCOMPLETE_BIT) #define XFS_ATTR_NSP_ONDISK_MASK \ - (XFS_ATTR_ROOT | XFS_ATTR_SECURE | XFS_ATTR_PARENT) + (XFS_ATTR_ROOT | XFS_ATTR_SECURE | XFS_ATTR_PARENT | \ + XFS_ATTR_VERITY) + +/* + * Internal attributes not exposed to the user + */ +#define XFS_ATTR_INTERNAL_MASK (XFS_ATTR_PARENT | XFS_ATTR_VERITY) /* * Alignment for namelist and valuelist entries (since they are mixed diff --git a/fs/xfs/libxfs/xfs_log_format.h b/fs/xfs/libxfs/xfs_log_format.h index 9cbcba4bd363..407fadfb5c06 100644 --- a/fs/xfs/libxfs/xfs_log_format.h +++ b/fs/xfs/libxfs/xfs_log_format.h @@ -975,6 +975,7 @@ struct xfs_icreate_log { #define XFS_ATTRI_FILTER_MASK (XFS_ATTR_ROOT | \ XFS_ATTR_SECURE | \ XFS_ATTR_PARENT | \ + XFS_ATTR_VERITY | \ XFS_ATTR_INCOMPLETE) /* diff --git a/fs/xfs/xfs_ioctl.c b/fs/xfs/xfs_ioctl.c index d0e2cec6210d..ab61d7d552fb 100644 --- a/fs/xfs/xfs_ioctl.c +++ b/fs/xfs/xfs_ioctl.c @@ -352,6 +352,11 @@ static unsigned int xfs_attr_filter( u32 ioc_flags) { + /* + * Only externally visible attributes should be specified here. + * Internally used attributes (such as parent pointers or fs-verity) + * should not be exposed to userspace. + */ if (ioc_flags & XFS_IOC_ATTR_ROOT) return XFS_ATTR_ROOT; if (ioc_flags & XFS_IOC_ATTR_SECURE) diff --git a/fs/xfs/xfs_trace.h b/fs/xfs/xfs_trace.h index d4f1b2da21e7..9d4ae05abfc8 100644 --- a/fs/xfs/xfs_trace.h +++ b/fs/xfs/xfs_trace.h @@ -87,7 +87,8 @@ struct xfs_bmap_intent; { XFS_ATTR_ROOT, "ROOT" }, \ { XFS_ATTR_SECURE, "SECURE" }, \ { XFS_ATTR_INCOMPLETE, "INCOMPLETE" }, \ - { XFS_ATTR_PARENT, "PARENT" } + { XFS_ATTR_PARENT, "PARENT" }, \ + { XFS_ATTR_VERITY, "VERITY" } DECLARE_EVENT_CLASS(xfs_attr_list_class, TP_PROTO(struct xfs_attr_list_context *ctx), diff --git a/fs/xfs/xfs_xattr.c b/fs/xfs/xfs_xattr.c index 364104e1b38a..e4c88dde4e44 100644 --- a/fs/xfs/xfs_xattr.c +++ b/fs/xfs/xfs_xattr.c @@ -20,6 +20,13 @@ #include +/* + * This file defines interface to work with externally visible extended + * attributes, such as those in user, system or security namespaces. This + * interface should not be used for internally used attributes (consider + * xfs_attr.c). + */ + /* * Get permission to use log-assisted atomic exchange of file extents. * @@ -244,6 +251,9 @@ xfs_xattr_put_listent( ASSERT(context->count >= 0); + if (flags & XFS_ATTR_INTERNAL_MASK) + return; + if (flags & XFS_ATTR_ROOT) { #ifdef CONFIG_XFS_POSIX_ACL if (namelen == SGI_ACL_FILE_SIZE &&