From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-12.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 132A6C63797 for ; Thu, 22 Jul 2021 08:15:28 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E673861279 for ; Thu, 22 Jul 2021 08:15:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230397AbhGVHev (ORCPT ); Thu, 22 Jul 2021 03:34:51 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44484 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230048AbhGVHev (ORCPT ); Thu, 22 Jul 2021 03:34:51 -0400 Received: from mail-wr1-x42b.google.com (mail-wr1-x42b.google.com [IPv6:2a00:1450:4864:20::42b]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 62556C061575; Thu, 22 Jul 2021 01:15:26 -0700 (PDT) Received: by mail-wr1-x42b.google.com with SMTP id n1so4918753wri.10; Thu, 22 Jul 2021 01:15:26 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=CB1DhhoIrWZ2u4W7LFw9hU1lA3h0TX8k9+TK23TIXls=; b=NKSGar6024S8fjlqKdxqo7uetI0k/el2vdVuKUbYIqQkIx7epBvdv69wqTtivfh3cc +k4CgoFsQ3AZts6oEcz6oYbdWprwsyXShzxtDfZNO/+7TJuRcV1bXIvo+AD1/zO0xm35 x/8I2+GAxigfX1hM6XTSyZj3+WAofCP+9K1pXTbQ36qOmEr4KOwI2+Cb64N/51h+DNgn EeLETWVsffqljiFuNQKR5korTSWclghsbdhCoc8g742RSxCvbSVfkCtnXXuMh0fwMmdb JHZoa/noWDC2iC5XD2WwTOz/CnvxNvxFMazLk9T294q/eSxWr+G0cmzVBCtFPfIzGXiK nRTw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=CB1DhhoIrWZ2u4W7LFw9hU1lA3h0TX8k9+TK23TIXls=; b=t6RbFDddLg7uV7okjccLJ+Q9tVmqyN3BIDMdMV+600xJl83zeRnRYWUZrTQhA9lSgV v2Jmq2gYTpF0452VMDOwUz2301tTjO1SC0FHObPh4f1zvLJBJQ32gZh6kPJbiHmIqYVf q52lvbh+EsMl3DjP8VCDSYtrnGj2fZQ51JSG3Ph7CKVSqkRq9GJAfm0fMpwnNVAibaDm oCCysIHsBaA7lvwoFeCTA9VhU0y22v6qmSWTkYHgqmL7bmJkTOWWGUqcwFHH8u+reyI0 9Vok0H1QLcFVpgh/0Dbp9XZdMqK+Qd85IBD6wXSerXtB5cV+HWh3URDw+qd2u5j6ePON Tejw== X-Gm-Message-State: AOAM530mtWYIIE8AnQHhEhV1ehCxGvTL33V2GTZody/Rhv1KtVbLZ5T4 MrYunsizXACsY4zmqg7R+4z3m0FyAzYeirYRV11XcbIsBbg= X-Google-Smtp-Source: ABdhPJyFh4EkKq2jcgqpXacFax1D4snzJyjJDqXuDSQpcR3EzS/pP2Yv2bHfRjXl6gTFPkjEOSvauSeYcCHHSWqhXWQ= X-Received: by 2002:adf:8b1d:: with SMTP id n29mr47833962wra.291.1626941724710; Thu, 22 Jul 2021 01:15:24 -0700 (PDT) MIME-Version: 1.0 References: <20210710143959.58077-1-wangshilong1991@gmail.com> In-Reply-To: <20210710143959.58077-1-wangshilong1991@gmail.com> From: Wang Shilong Date: Thu, 22 Jul 2021 16:15:13 +0800 Message-ID: Subject: Re: [PATCH v4] fs: forbid invalid project ID To: linux-fsdevel@vger.kernel.org Cc: linux-xfs@vger.kernel.org, Ext4 Developers List , linux-f2fs-devel@lists.sourceforge.net, Wang Shilong Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org Anyone take this patch to the tree? maybe Al Viro? On Sat, Jul 10, 2021 at 10:40 PM Wang Shilong wrote: > > From: Wang Shilong > > fileattr_set_prepare() should check if project ID > is valid, otherwise dqget() will return NULL for > such project ID quota. > > Signed-off-by: Wang Shilong > --- > v3->v3: > only check project Id if caller is allowed > to change and being changed. > > v2->v3: move check before @fsx_projid is accessed > and use make_kprojid() helper. > > v1->v2: try to fix in the VFS > fs/ioctl.c | 8 ++++++++ > 1 file changed, 8 insertions(+) > > diff --git a/fs/ioctl.c b/fs/ioctl.c > index 1e2204fa9963..d4fabb5421cd 100644 > --- a/fs/ioctl.c > +++ b/fs/ioctl.c > @@ -817,6 +817,14 @@ static int fileattr_set_prepare(struct inode *inode, > if ((old_ma->fsx_xflags ^ fa->fsx_xflags) & > FS_XFLAG_PROJINHERIT) > return -EINVAL; > + } else { > + /* > + * Caller is allowed to change the project ID. If it is being > + * changed, make sure that the new value is valid. > + */ > + if (old_ma->fsx_projid != fa->fsx_projid && > + !projid_valid(make_kprojid(&init_user_ns, fa->fsx_projid))) > + return -EINVAL; > } > > /* Check extent size hints. */ > -- > 2.27.0 >