From nobody Fri Oct 3 11:39:45 2025 Delivered-To: importer@patchew.org Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=redhat.com ARC-Seal: i=1; a=rsa-sha256; t=1579806182; cv=none; d=zohomail.com; s=zohoarc; b=R6sJ1EdWIFcqf90ZWq0s7NtZdezhJL8QN9aBYgLxMjD6bcGp4gT3AmrdpAGc+ivwJ+RDoaCmWbRMyRJ/NqYFLrD7ZOHqlfanWMS/zoCYrlGQH8mgsHLtL6ndLI50my7JdZuuE1WfcHtpRFF9k2EkKJAsuesjZ9DDDddVzays2hM= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1579806182; h=Content-Type:Content-Transfer-Encoding:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:To; bh=A2OLDzwvIkswhQnYmC967hKOHC8UuZ0BirW2egCo2xI=; b=ei9BTAKLukng8UZl+Ymhw9uMZRdFMQKvm4zezXuf2ycSqPinkED5SeQbuobZlJzX/4+LvALST4cbWvzSjrpbYr2VCRNRgaf56Ezp6hk/ORNVv/Fa/0fI0RNz5UR8if1dUCfWcCMOb26xmhrk9FKw1Xn1nx29/n7e/yTs+ftVAIg= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass header.from= (p=none dis=none) header.from= Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1579806182048200.33674574187125; Thu, 23 Jan 2020 11:03:02 -0800 (PST) Received: from localhost ([::1]:35252 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iuhkq-0004XC-Gf for importer@patchew.org; Thu, 23 Jan 2020 14:03:00 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:41441) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iufe9-0005DA-Cu for qemu-devel@nongnu.org; Thu, 23 Jan 2020 11:47:58 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1iufe8-0006eu-49 for qemu-devel@nongnu.org; Thu, 23 Jan 2020 11:47:57 -0500 Received: from us-smtp-2.mimecast.com ([205.139.110.61]:58943 helo=us-smtp-delivery-1.mimecast.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1iufe8-0006eS-0z for qemu-devel@nongnu.org; Thu, 23 Jan 2020 11:47:56 -0500 Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-286-uiYjjXtFNzW0xJdapgElZw-1; Thu, 23 Jan 2020 11:47:53 -0500 Received: from smtp.corp.redhat.com (int-mx08.intmail.prod.int.phx2.redhat.com [10.5.11.23]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id B9DD67A0A7 for ; Thu, 23 Jan 2020 16:47:52 +0000 (UTC) Received: from dgilbert-t580.localhost (ovpn-116-110.ams2.redhat.com [10.36.116.110]) by smtp.corp.redhat.com (Postfix) with ESMTP id AD59319C69; Thu, 23 Jan 2020 16:47:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1579798075; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=A2OLDzwvIkswhQnYmC967hKOHC8UuZ0BirW2egCo2xI=; b=KTV8Hic6mjjNRgBFl040CfB2JC3UcXd2EzNHe97dwYNf+tZ8j+RenOLNvHvtiTrz4lyBB+ jzYct+4S4XbawgZWG6Ex1NLXohnGgSZbqGEkcHLOdlYYwx55bfkGBk5e7G5ehOwPArqLGL crZ0phnDAQAeGmP/uoGyEYL1HasmB8g= From: "Dr. David Alan Gilbert (git)" To: qemu-devel@nongnu.org, stefanha@redhat.com Subject: [PULL 053/108] virtiofsd: Parse flag FUSE_WRITE_KILL_PRIV Date: Thu, 23 Jan 2020 16:45:35 +0000 Message-Id: <20200123164630.91498-54-dgilbert@redhat.com> In-Reply-To: <20200123164630.91498-1-dgilbert@redhat.com> References: <20200123164630.91498-1-dgilbert@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.84 on 10.5.11.23 X-MC-Unique: uiYjjXtFNzW0xJdapgElZw-1 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 205.139.110.61 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @redhat.com) Content-Type: text/plain; charset="utf-8" From: Vivek Goyal Caller can set FUSE_WRITE_KILL_PRIV in write_flags. Parse it and pass it to the filesystem. Signed-off-by: Vivek Goyal Reviewed-by: Misono Tomohiro Reviewed-by: Sergio Lopez Signed-off-by: Dr. David Alan Gilbert --- tools/virtiofsd/fuse_common.h | 6 +++++- tools/virtiofsd/fuse_lowlevel.c | 4 +++- 2 files changed, 8 insertions(+), 2 deletions(-) diff --git a/tools/virtiofsd/fuse_common.h b/tools/virtiofsd/fuse_common.h index f8f6433743..686c42c0a5 100644 --- a/tools/virtiofsd/fuse_common.h +++ b/tools/virtiofsd/fuse_common.h @@ -93,8 +93,12 @@ struct fuse_file_info { */ unsigned int cache_readdir:1; =20 + /* Indicates that suid/sgid bits should be removed upon write */ + unsigned int kill_priv:1; + + /** Padding. Reserved for future use*/ - unsigned int padding:25; + unsigned int padding:24; unsigned int padding2:32; =20 /* diff --git a/tools/virtiofsd/fuse_lowlevel.c b/tools/virtiofsd/fuse_lowleve= l.c index 02e1d83038..2d6dc5a680 100644 --- a/tools/virtiofsd/fuse_lowlevel.c +++ b/tools/virtiofsd/fuse_lowlevel.c @@ -1142,6 +1142,7 @@ static void do_write(fuse_req_t req, fuse_ino_t nodei= d, memset(&fi, 0, sizeof(fi)); fi.fh =3D arg->fh; fi.writepage =3D (arg->write_flags & FUSE_WRITE_CACHE) !=3D 0; + fi.kill_priv =3D !!(arg->write_flags & FUSE_WRITE_KILL_PRIV); =20 fi.lock_owner =3D arg->lock_owner; fi.flags =3D arg->flags; @@ -1177,7 +1178,8 @@ static void do_write_buf(fuse_req_t req, fuse_ino_t n= odeid, fi.lock_owner =3D arg->lock_owner; fi.flags =3D arg->flags; fi.fh =3D arg->fh; - fi.writepage =3D arg->write_flags & FUSE_WRITE_CACHE; + fi.writepage =3D !!(arg->write_flags & FUSE_WRITE_CACHE); + fi.kill_priv =3D !!(arg->write_flags & FUSE_WRITE_KILL_PRIV); =20 if (ibufv->count =3D=3D 1) { assert(!(tmpbufv.buf[0].flags & FUSE_BUF_IS_FD)); --=20 2.24.1