From patchwork Wed Jun 24 16:13:23 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 11623629 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 07BF792A for ; Wed, 24 Jun 2020 16:14:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D776F20768 for ; Wed, 24 Jun 2020 16:14:06 +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="GSulsNqq" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2404796AbgFXQOF (ORCPT ); Wed, 24 Jun 2020 12:14:05 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38656 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2404235AbgFXQOE (ORCPT ); Wed, 24 Jun 2020 12:14:04 -0400 Received: from casper.infradead.org (unknown [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3FFE5C061573; Wed, 24 Jun 2020 09:14:04 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.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=jzV+T85fyIY/sAf/kMztKfiAVfq1VzZmIi5LCeoOypo=; b=GSulsNqq1StCeZPIDwLTm/QaaG XncpBCn5QnXpMWuZvUOunWHtqGlkSf279dXmkDcdVpku8bYVvHDfMyy4uJAjYsl6fjCVhz8JzwlZ+ ujOr4/ssGMDGtQf104xvX9Ik4qJ6Sb7/eyh0svbWtsutha5ZUhyDKPIVGW/rDKWuXqPPqqmQh9HTP RGUNnUp5Dln6myLyRmFcsPUiwpYKgU83aSC5o5GZ3RO119F3LYADd7uhkL/E8aZG4duiplnioA4uC /njpKnOZKa+2BBs4wvNzCTasT23eSvUK6/wHKpl09mEoHk+ysFzyH+RD88fF2FFB8f50xGOFZEW8P 3Ljqu4eQ==; Received: from [2001:4bb8:180:a3:5c7c:8955:539d:955b] (helo=localhost) by casper.infradead.org with esmtpsa (Exim 4.92.3 #3 (Red Hat Linux)) id 1jo81r-0005xf-Jc; Wed, 24 Jun 2020 16:13:39 +0000 From: Christoph Hellwig To: Al Viro Cc: Linus Torvalds , 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, 24 Jun 2020 18:13:23 +0200 Message-Id: <20200624161335.1810359-3-hch@lst.de> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20200624161335.1810359-1-hch@lst.de> References: <20200624161335.1810359-1-hch@lst.de> MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by casper.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 b04c528b19d342..74c886f7c51cbe 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;