From patchwork Wed Nov 6 12:35:46 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: David Howells X-Patchwork-Id: 13864826 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) (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 E4B011FC7DD for ; Wed, 6 Nov 2024 12:39:02 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=170.10.133.124 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730896745; cv=none; b=D7qLL8mBl4AHeCbqqdPI/pDPOCydNObekKLL2FN9WduI6P1kfXmnP1JAjBgVhQZ8iQpkjqMU8tHCfmKLzk8XIzu1xfZbucJw+LNCBNf3ZpJ5ZlW6ZkDZ2NTZLzDjHmzVxl/HmU39ZoUmc1adXRDma4sZmUX+Q2MO0Jj8YJUtQvM= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730896745; c=relaxed/simple; bh=raCpdqcu2ygldk7gd5VDDvJXWwDH1Uhs8ai3Ef9spQ4=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=j3bJ6ZrpVChFOeRsydimqJJWrZVe8Jmh2iBRwiPftsM58VfvdLqCNSp7NHX+zkoPp2zd08wvS8T/gcaCaNQCt+xtVteYcgzVRSJy3U9/ULmPr17XLTwAy99zgRHhcHR7GDFDCrbbBlncw6Np5TkvH/+F28QZiVAnsKUD5Yl7M8U= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=redhat.com; spf=pass smtp.mailfrom=redhat.com; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b=BoWvZ47U; arc=none smtp.client-ip=170.10.133.124 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=redhat.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=redhat.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="BoWvZ47U" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1730896741; h=from:from:reply-to:subject:subject: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=u3/1sOVuQqHpfo8UyVSOFEz4LX0EnJcfMGVnlE5mJ3g=; b=BoWvZ47UPjr+xXKFfBX8SfCS56a1jXT0PlRSm/WGx9oag2a0z0pi23xUExJhIwI8ICKU38 uIc4DU1fyrx5RE6ApvLyvhMcLmRHO4n50ONlFwvkuNzux+LkFAA/UEBBlYMlzJNmTasWBE z8RFKKbWUmIMlxeECqN7jPKdARBVy1M= Received: from mx-prod-mc-01.mail-002.prod.us-west-2.aws.redhat.com (ec2-54-186-198-63.us-west-2.compute.amazonaws.com [54.186.198.63]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-562-zIalLRNpOfSaC24x3As0zw-1; Wed, 06 Nov 2024 07:38:58 -0500 X-MC-Unique: zIalLRNpOfSaC24x3As0zw-1 X-Mimecast-MFC-AGG-ID: zIalLRNpOfSaC24x3As0zw Received: from mx-prod-int-03.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-03.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.12]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mx-prod-mc-01.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 26C951955D50; Wed, 6 Nov 2024 12:38:54 +0000 (UTC) Received: from warthog.procyon.org.uk.com (unknown [10.42.28.231]) by mx-prod-int-03.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP id 9BB6119541A5; Wed, 6 Nov 2024 12:38:48 +0000 (UTC) From: David Howells To: Christian Brauner , Steve French , Matthew Wilcox Cc: David Howells , Jeff Layton , Gao Xiang , Dominique Martinet , Marc Dionne , Paulo Alcantara , Shyam Prasad N , Tom Talpey , Eric Van Hensbergen , Ilya Dryomov , netfs@lists.linux.dev, linux-afs@lists.infradead.org, linux-cifs@vger.kernel.org, linux-nfs@vger.kernel.org, ceph-devel@vger.kernel.org, v9fs@lists.linux.dev, linux-erofs@lists.ozlabs.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v3 22/33] afs: Make afs_init_request() get a key if not given a file Date: Wed, 6 Nov 2024 12:35:46 +0000 Message-ID: <20241106123559.724888-23-dhowells@redhat.com> In-Reply-To: <20241106123559.724888-1-dhowells@redhat.com> References: <20241106123559.724888-1-dhowells@redhat.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.0 on 10.30.177.12 In a future patch, AFS directory caching will go through netfslib and this will involve, at times, running on behalf of ->lookup(), which doesn't provide us with a file from which we can get an authentication key. If a file isn't provided, make afs_init_request() get a key from the process's keyrings instead when setting up a read. Signed-off-by: David Howells cc: Marc Dionne cc: linux-afs@lists.infradead.org --- fs/afs/file.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/fs/afs/file.c b/fs/afs/file.c index f717168da4ab..a9d98d18407c 100644 --- a/fs/afs/file.c +++ b/fs/afs/file.c @@ -372,10 +372,26 @@ static int afs_symlink_read_folio(struct file *file, struct folio *folio) static int afs_init_request(struct netfs_io_request *rreq, struct file *file) { + struct afs_vnode *vnode = AFS_FS_I(rreq->inode); + if (file) rreq->netfs_priv = key_get(afs_file_key(file)); rreq->rsize = 256 * 1024; rreq->wsize = 256 * 1024 * 1024; + + switch (rreq->origin) { + case NETFS_READ_SINGLE: + if (!file) { + struct key *key = afs_request_key(vnode->volume->cell); + + if (IS_ERR(key)) + return PTR_ERR(key); + rreq->netfs_priv = key; + } + break; + default: + break; + } return 0; }