From patchwork Mon Dec 16 20:41:10 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: David Howells X-Patchwork-Id: 13910387 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 862841F4E48 for ; Mon, 16 Dec 2024 20:44:13 +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=1734381855; cv=none; b=A+o/nCHkkUJ5P3rqKQU6Swa4bAmHnk6PXiGpeA9mRW/T8okf5FWOSfGxm1sCatCvp4cpnz+G+M2BVsDED30c7Adx80/PLAB4SAHjYtg7pij088rG4qL55EVfNCwaf81d3Zzb+dYRLL/HEyjWbUSopaDLdLclsLtYarUavilzcLc= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1734381855; c=relaxed/simple; bh=raCpdqcu2ygldk7gd5VDDvJXWwDH1Uhs8ai3Ef9spQ4=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=pGvbA7inVdPEtVm9ELNu5XYVitx/OPuKwnacHa/Wp0gQlL3+GH3VU32RA2fREV1Qi7Q87vFGTPONrUDK6+eezbkXdkTdSRq6avIfgZq0fF7wt7uq/9sZcyBu3shX2D6CR85RYXiVqyQqiZDB1bjT9ItYevciP4Yj8LC6TNKnp6c= 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=WbPY1WpW; 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="WbPY1WpW" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1734381852; 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=WbPY1WpWPxoBYjBm/bKf2bnLFa6WkhEgNMxDIDP3aOBEN9jPTz1DnwM/jFyvrxOLviwK2b zoGc3obGeFYmeO5bmWE+3BH99atKPudMJJH2R7/P06FnEQZpqjfpfbarVkxd2H/yxpEHZH ShuRSnN5ZxRSsk7A1GXXBxfTHDpEGQk= 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-212-FSMi43-SNXSWMNkiuFpBFg-1; Mon, 16 Dec 2024 15:44:07 -0500 X-MC-Unique: FSMi43-SNXSWMNkiuFpBFg-1 X-Mimecast-MFC-AGG-ID: FSMi43-SNXSWMNkiuFpBFg Received: from mx-prod-int-02.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-02.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.15]) (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 54C011955F3E; Mon, 16 Dec 2024 20:44:03 +0000 (UTC) Received: from warthog.procyon.org.com (unknown [10.42.28.48]) by mx-prod-int-02.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP id BE50F19560A2; Mon, 16 Dec 2024 20:43:57 +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 v5 20/32] afs: Make afs_init_request() get a key if not given a file Date: Mon, 16 Dec 2024 20:41:10 +0000 Message-ID: <20241216204124.3752367-21-dhowells@redhat.com> In-Reply-To: <20241216204124.3752367-1-dhowells@redhat.com> References: <20241216204124.3752367-1-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 10.30.177.15 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; }