From patchwork Wed Apr 25 15:47:50 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 10363865 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 08CF16032C for ; Wed, 25 Apr 2018 16:27:23 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id EA0EE28BDA for ; Wed, 25 Apr 2018 16:27:22 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id DE61228C96; Wed, 25 Apr 2018 16:27:22 +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=-7.8 required=2.0 tests=BAYES_00,DKIM_SIGNED, MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI, T_DKIM_INVALID autolearn=unavailable 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 61A7928BDA for ; Wed, 25 Apr 2018 16:27:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755086AbeDYQ0q (ORCPT ); Wed, 25 Apr 2018 12:26:46 -0400 Received: from bombadil.infradead.org ([198.137.202.133]:36354 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754926AbeDYPs5 (ORCPT ); Wed, 25 Apr 2018 11:48:57 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20170209; h=References:In-Reply-To:Message-Id: Date:Subject:Cc:To:From:Sender:Reply-To:MIME-Version:Content-Type: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id: List-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=jjtc+BylkCQRbUezIax8ZwcWkqWdXi49U0dtgSfXUiE=; b=iiMBy100ain04VPqoLfqTcl1P SS0RWxphz12+EZ0sZKer0LNkG2+ivDEkptgXJV60rBBfiaiv8nWNuJE1B45NoAvUY+J3OOV3CSVDn rynv1j8qVTQNVsyii5kkCeK9tkrxbMFAF5HuroJQ0zMv/qlR6PCN9SSHwjNVw+6V9ZvyFNTYV51ie FiFpGUy7GRLVrSwf2vBGm0llVS1OoEKPJ3lWX2/yCgUU7kcfNhTKAwFoghTZ6phO+nFYIEMpaPT+B SsSKZ+phXwSeVwaVmwRMg+SGoRyWCN06t83J3h9Sn/p7hRkN7ltebVwqseobuD2o+1n8BTKls0H55 CwyTb+QRw==; Received: from 089144200182.atnat0009.highway.a1.net ([89.144.200.182] helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.90_1 #2 (Red Hat Linux)) id 1fBMew-0001RQ-W1; Wed, 25 Apr 2018 15:48:43 +0000 From: Christoph Hellwig To: Andrew Morton , Alexander Viro Cc: Alexey Dobriyan , Greg Kroah-Hartman , Jiri Slaby , Alessandro Zummo , Alexandre Belloni , linux-acpi@vger.kernel.org, drbd-dev@lists.linbit.com, linux-ide@vger.kernel.org, netdev@vger.kernel.org, linux-rtc@vger.kernel.org, megaraidlinux.pdl@broadcom.com, linux-scsi@vger.kernel.org, devel@driverdev.osuosl.org, linux-afs@lists.infradead.org, linux-ext4@vger.kernel.org, jfs-discussion@lists.sourceforge.net, netfilter-devel@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 03/40] proc: add a proc_create_reg helper Date: Wed, 25 Apr 2018 17:47:50 +0200 Message-Id: <20180425154827.32251-4-hch@lst.de> X-Mailer: git-send-email 2.17.0 In-Reply-To: <20180425154827.32251-1-hch@lst.de> References: <20180425154827.32251-1-hch@lst.de> X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html Sender: linux-scsi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Common code for creating a regular file. Factor out of proc_create_data, to be reused by other functions soon. Signed-off-by: Christoph Hellwig --- fs/proc/generic.c | 44 +++++++++++++++++++++++++------------------- fs/proc/internal.h | 2 ++ 2 files changed, 27 insertions(+), 19 deletions(-) diff --git a/fs/proc/generic.c b/fs/proc/generic.c index bd8480ff0d35..ab6a321076b8 100644 --- a/fs/proc/generic.c +++ b/fs/proc/generic.c @@ -511,33 +511,39 @@ struct proc_dir_entry *proc_create_mount_point(const char *name) } EXPORT_SYMBOL(proc_create_mount_point); -struct proc_dir_entry *proc_create_data(const char *name, umode_t mode, - struct proc_dir_entry *parent, - const struct file_operations *proc_fops, - void *data) +struct proc_dir_entry *proc_create_reg(const char *name, umode_t mode, + struct proc_dir_entry **parent, void *data) { - struct proc_dir_entry *pde; + struct proc_dir_entry *p; + if ((mode & S_IFMT) == 0) mode |= S_IFREG; - - if (!S_ISREG(mode)) { - WARN_ON(1); /* use proc_mkdir() */ + if ((mode & S_IALLUGO) == 0) + mode |= S_IRUGO; + if (WARN_ON_ONCE(!S_ISREG(mode))) return NULL; + + p = __proc_create(parent, name, mode, 1); + if (p) { + p->proc_iops = &proc_file_inode_operations; + p->data = data; } + return p; +} + +struct proc_dir_entry *proc_create_data(const char *name, umode_t mode, + struct proc_dir_entry *parent, + const struct file_operations *proc_fops, void *data) +{ + struct proc_dir_entry *p; BUG_ON(proc_fops == NULL); - if ((mode & S_IALLUGO) == 0) - mode |= S_IRUGO; - pde = __proc_create(&parent, name, mode, 1); - if (!pde) - goto out; - pde->proc_fops = proc_fops; - pde->data = data; - pde->proc_iops = &proc_file_inode_operations; - return proc_register(parent, pde); -out: - return NULL; + p = proc_create_reg(name, mode, &parent, data); + if (!p) + return NULL; + p->proc_fops = proc_fops; + return proc_register(parent, p); } EXPORT_SYMBOL(proc_create_data); diff --git a/fs/proc/internal.h b/fs/proc/internal.h index 488e67490312..dd1e11400b97 100644 --- a/fs/proc/internal.h +++ b/fs/proc/internal.h @@ -162,6 +162,8 @@ extern bool proc_fill_cache(struct file *, struct dir_context *, const char *, i /* * generic.c */ +struct proc_dir_entry *proc_create_reg(const char *name, umode_t mode, + struct proc_dir_entry **parent, void *data); struct proc_dir_entry *proc_register(struct proc_dir_entry *dir, struct proc_dir_entry *dp); extern struct dentry *proc_lookup(struct inode *, struct dentry *, unsigned int);