All of lore.kernel.org
 help / color / mirror / Atom feed
From: Chuck Lever <chuck.lever@oracle.com>
To: Linus Torvalds <torvalds@linuxfoundation.org>
Cc: Bruce Fields <bfields@fieldses.org>,
	Trond Myklebust <trondmy@hammerspace.com>,
	Linux NFS Mailing List <linux-nfs@vger.kernel.org>
Subject: Re: nfsd vurlerability submit
Date: Thu, 14 Jan 2021 13:35:37 -0500	[thread overview]
Message-ID: <7E14D32D-1B39-4DB1-AE39-B8B34655DC7D@oracle.com> (raw)
In-Reply-To: <CAHk-=wic1CEkj_vjf3dUWv41=aKeazSW5ugGOfYsKQZnihQhMw@mail.gmail.com>


> On Jan 14, 2021, at 1:29 PM, Linus Torvalds <torvalds@linuxfoundation.org> wrote:
> 
> On Thu, Jan 14, 2021 at 10:08 AM bfields@fieldses.org
> <bfields@fieldses.org> wrote:
>> 
>> I dug around a bit and couldn't find the idea of using filehandle
>> guessing plus mountd's following of symlinks to get access to other
>> filesystems.  That's kind of interesting.
> 
> [ Other people removed from cc, this is just a question about nfsd cleanliness ]
> 
> I missed if Trond's suggestion to at least fix up ".." to have the
> same filehandle as "." for the top export directory was done.

If I understand your question correctly... there is a commit in
linux-next that simply doesn't return any filehandle for ".."
in the root directory.

https://git.kernel.org/pub/scm/linux/kernel/git/cel/linux.git/commit/?h=for-next&id=51b2ee7d006a736a9126e8111d1f24e4fd0afaa6

I intend to send you a PR after a few more days of soak time,
unless you'd like me to send it now.


--
Chuck Lever




  reply	other threads:[~2021-01-14 18:36 UTC|newest]

Thread overview: 30+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <CAHxDmpTKJfnhGY9CVupyVYhNCTDVKBB6KRwh-E6u_XEPJq4WJQ@mail.gmail.com>
     [not found] ` <20210105165633.GC14893@fieldses.org>
     [not found]   ` <X/hEB8awvGyMKi6x@kroah.com>
     [not found]     ` <20210108152017.GA4183@fieldses.org>
     [not found]       ` <CAHxDmpSp1LHzKD5uqbfi+jcnb+nFaAZbc5++E0oOvLsYvyYDpw@mail.gmail.com>
     [not found]         ` <20210108164433.GB8699@fieldses.org>
     [not found]           ` <CAHxDmpSjwrcr_fqLJa5=Zo=xmbt2Eo9dcy6TQuoU8+F3yVVNhw@mail.gmail.com>
     [not found]             ` <20210110201740.GA8789@fieldses.org>
     [not found]               ` <20210110202815.GB8789@fieldses.org>
     [not found]                 ` <CAHxDmpR8S7NR8OU2nWJmWBdFU9a7wDuDnxviQ2E9RDOeW9fExg@mail.gmail.com>
2021-01-11 19:25                   ` nfsd vurlerability submit J. Bruce Fields
2021-01-11 21:01                     ` [PATCH] nfsd4: readdirplus shouldn't return parent of export J. Bruce Fields
2021-01-12 13:31                       ` Chuck Lever
2021-01-12 13:50                         ` Bruce Fields
     [not found]       ` <20210108152607.GA950@1wt.eu>
     [not found]         ` <20210108153237.GB4183@fieldses.org>
     [not found]           ` <20210108154230.GB950@1wt.eu>
     [not found]             ` <20210111193655.GC2600@fieldses.org>
     [not found]               ` <CAHxDmpR1zG25ADfK2jat4VKGbAOCg6YM_0WA+a_jQE82hbnMjA@mail.gmail.com>
     [not found]                 ` <CAHxDmpRfmVukMR_yF4coioiuzrsp72zBraHWZ8gaMydUuLwKFg@mail.gmail.com>
2021-01-12 15:32                   ` nfsd vurlerability submit J. Bruce Fields
2021-01-12 16:53                     ` Trond Myklebust
2021-01-12 17:20                       ` Patrick Goetz
2021-01-12 18:03                         ` bfields
2021-01-13  8:12                           ` Christoph Hellwig
2021-01-13 14:34                             ` Trond Myklebust
2021-01-13 14:40                               ` hch
2021-01-13 15:16                                 ` Trond Myklebust
2021-01-13 15:30                                   ` hch
2021-01-13 15:45                                     ` Frank Filz
2021-01-21 20:01                           ` Patrick Goetz
2021-01-21 22:04                             ` bfields
2021-01-21 23:19                               ` Patrick Goetz
2021-01-22  1:30                                 ` bfields
2021-01-22 13:20                                   ` Patrick Goetz
2021-01-22 14:48                                     ` Tom Talpey
     [not found]                       ` <CAHxDmpTEBJ1jd_fr3GJ4k7KgzaBpe1LwKgyZn0AJ0D1ESK12fQ@mail.gmail.com>
2021-01-12 17:47                         ` Trond Myklebust
     [not found]                           ` <CAHxDmpTyrG74hOkzmDK834t+JiQduWHVWxCf_7nrDVa++EK2mA@mail.gmail.com>
2021-01-13 14:25                             ` Trond Myklebust
2021-01-14 18:07                               ` bfields
2021-01-14 18:29                                 ` Linus Torvalds
2021-01-14 18:35                                   ` Chuck Lever [this message]
2021-01-14 18:37                                     ` Linus Torvalds
2021-01-18 16:29                       ` 吴异
2021-01-18 22:55                         ` bfields
2021-01-19  2:48                           ` 吴异
2021-01-19  3:46                             ` bfields

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=7E14D32D-1B39-4DB1-AE39-B8B34655DC7D@oracle.com \
    --to=chuck.lever@oracle.com \
    --cc=bfields@fieldses.org \
    --cc=linux-nfs@vger.kernel.org \
    --cc=torvalds@linuxfoundation.org \
    --cc=trondmy@hammerspace.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.