From patchwork Wed May 13 06:56:44 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 11545179 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 3286114B4 for ; Wed, 13 May 2020 06:57:09 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 110F620784 for ; Wed, 13 May 2020 06:57:09 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="pLg5Kt6Q" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729980AbgEMG5I (ORCPT ); Wed, 13 May 2020 02:57:08 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50558 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726020AbgEMG5G (ORCPT ); Wed, 13 May 2020 02:57:06 -0400 Received: from bombadil.infradead.org (bombadil.infradead.org [IPv6:2607:7c80:54:e::133]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8EBFBC061A0C; Tue, 12 May 2020 23:57:06 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20170209; h=Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From:Sender :Reply-To:Content-Type:Content-ID:Content-Description; bh=rXtaZ1o/KEZPUZSWEL2q4wXgiltZU/5g4tfpDlbXLdY=; b=pLg5Kt6QBe/gTDZYWUaFlA1FTD 24J+oa+KLkw0xpCmIUI1XPHhRyM6GL25rsb5CogQdpQ/OHd67+yePhl/Z7U5oAAzmexDEb6fjALrZ fRmjrmp/NCElzHmUC1zYFfNYIH7ihr4ZMaT+ZgEVARqiRLLuI2ccxAVOm0RCZqqUsMJ1qrfiJOGLB 6lWWEVb8ddKF1fJtiFL2R3HNCJAMG3chYWwjDFO07SwyVKJ15wmHtQr1/GsSC33lLEk4IxtEMCtdW IK9T69Y9wNRvXsaKBvVlDsd1fNeZycc366CvQVKfrvb1UrE4xOXusW6qIgfUz40D5RldTXv8OZWPt GktUnNbA==; Received: from [2001:4bb8:180:9d3f:c70:4a89:bc61:2] (helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.92.3 #3 (Red Hat Linux)) id 1jYlKB-0003Uw-J1; Wed, 13 May 2020 06:57:04 +0000 From: Christoph Hellwig To: Al Viro Cc: Ian Kent , David Howells , linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-security-module@vger.kernel.org, netfilter-devel@vger.kernel.org Subject: [PATCH 02/14] autofs: switch to kernel_write Date: Wed, 13 May 2020 08:56:44 +0200 Message-Id: <20200513065656.2110441-3-hch@lst.de> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20200513065656.2110441-1-hch@lst.de> References: <20200513065656.2110441-1-hch@lst.de> MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html Sender: owner-linux-security-module@vger.kernel.org Precedence: bulk List-ID: While pipes don't really need sb_writers projection, __kernel_write is an interface better kept private, and the additional rw_verify_area does not hurt here. Signed-off-by: Christoph Hellwig Acked-by: Ian Kent --- fs/autofs/waitq.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/autofs/waitq.c b/fs/autofs/waitq.c index b04c528b19d34..74c886f7c51cb 100644 --- a/fs/autofs/waitq.c +++ b/fs/autofs/waitq.c @@ -53,7 +53,7 @@ static int autofs_write(struct autofs_sb_info *sbi, mutex_lock(&sbi->pipe_mutex); while (bytes) { - wr = __kernel_write(file, data, bytes, &file->f_pos); + wr = kernel_write(file, data, bytes, &file->f_pos); if (wr <= 0) break; data += wr;