From patchwork Thu Dec 1 10:14:57 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Miklos Szeredi X-Patchwork-Id: 9455751 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 5414260515 for ; Thu, 1 Dec 2016 10:16:56 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 446EF283BB for ; Thu, 1 Dec 2016 10:16:56 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 38B0D28458; Thu, 1 Dec 2016 10:16:56 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id D16C4283BB for ; Thu, 1 Dec 2016 10:16:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754225AbcLAKQx (ORCPT ); Thu, 1 Dec 2016 05:16:53 -0500 Received: from mail-wj0-f172.google.com ([209.85.210.172]:36623 "EHLO mail-wj0-f172.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756056AbcLAKPK (ORCPT ); Thu, 1 Dec 2016 05:15:10 -0500 Received: by mail-wj0-f172.google.com with SMTP id qp4so200115520wjc.3 for ; Thu, 01 Dec 2016 02:15:09 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=698Xu9O4pxSavXhLxr6MIoRWsMa2ZtuYRb67Dg4ayQ4=; b=lSqlw0IfQ/zmtQqeNHGGwKuUkjlvyJj7mMebLu8JXoLN85vtq58bj7uWK7AguEyyiH 0qdsrw2XjLpUCNWp1NifychkBiZwKsYEZHS1ph/OSJRd02SerW7GFA8R5EkcL4h8WhUo KuRmaFUxKeysC+Oe4zq0A4nsO0dqq7lTrzQcokmSOgB81BgF38Seg86Q1U2QG+oTOecR miVLllD4Ei1h8sb7hfHeam1uqhyWaxj6hg9e81LG0rCyOLcnA7MGrwkXgeVBKogNJmCX kT1DWJ0QNjFQZFxCVNO3/yA+o1EkM+qn8VuyyiDPZ983K4HIoDGg4AbC2kTTFqLOZvNa k+AA== X-Gm-Message-State: AKaTC03VuOqc9sVTqXpGrDnPoGhSSO9cEZTRfBsn0+F2i0deIfsz1k9blNGfpVirJmjr2Mor X-Received: by 10.194.146.228 with SMTP id tf4mr32713551wjb.183.1480587308626; Thu, 01 Dec 2016 02:15:08 -0800 (PST) Received: from veci.piliscsaba.szeredi.hu (pool-dsl-2c-0018.externet.hu. [217.173.44.24]) by smtp.gmail.com with ESMTPSA id ab10sm77218141wjc.45.2016.12.01.02.15.07 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 01 Dec 2016 02:15:07 -0800 (PST) From: Miklos Szeredi To: Al Viro Cc: linux-unionfs@vger.kernel.org, linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org Subject: [PATCH 2/8] vfs: export filp_clone_open() Date: Thu, 1 Dec 2016 11:14:57 +0100 Message-Id: <1480587303-25088-3-git-send-email-mszeredi@redhat.com> X-Mailer: git-send-email 2.5.5 In-Reply-To: <1480587303-25088-1-git-send-email-mszeredi@redhat.com> References: <1480587303-25088-1-git-send-email-mszeredi@redhat.com> Sender: linux-fsdevel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Already exported to modules, just needs to move declaration from "fs/internal.h" to . This will be used by overlayfs to clone a read-only file that has been copied up after being opened. The clone will refer to the copied-up uppper file instead of the original, lower file. Signed-off-by: Miklos Szeredi --- fs/internal.h | 1 - include/linux/fs.h | 1 + 2 files changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/internal.h b/fs/internal.h index f4da3341b4a3..361ba1c12698 100644 --- a/fs/internal.h +++ b/fs/internal.h @@ -112,7 +112,6 @@ extern long do_handle_open(int mountdirfd, struct file_handle __user *ufh, int open_flag); extern int open_check_o_direct(struct file *f); extern int vfs_open(const struct path *, struct file *, const struct cred *); -extern struct file *filp_clone_open(struct file *); /* * inode.c diff --git a/include/linux/fs.h b/include/linux/fs.h index 87a32f999812..e3bc970214e1 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -2355,6 +2355,7 @@ extern struct file *filp_open(const char *, int, umode_t); extern struct file *file_open_root(struct dentry *, struct vfsmount *, const char *, int, umode_t); extern struct file * dentry_open(const struct path *, int, const struct cred *); +extern struct file *filp_clone_open(struct file *); extern int filp_close(struct file *, fl_owner_t id); extern struct filename *getname_flags(const char __user *, int, int *);