mirror of https://lore.kernel.org/lkml/
 help / color / mirror / Atom feed
From: Florian Weimer <fweimer@redhat.com>
To: Chen Linxuan via B4 Relay <devnull+me.black-desk.cn@kernel.org>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>,
	 Christian Brauner <brauner@kernel.org>,  Jan Kara <jack@suse.cz>,
	 Andrew Morton <akpm@linux-foundation.org>,
	 David Hildenbrand <david@kernel.org>,
	Lorenzo Stoakes <ljs@kernel.org>,
	 "Liam R. Howlett" <liam@infradead.org>,
	 Vlastimil Babka <vbabka@kernel.org>,
	 Mike Rapoport <rppt@kernel.org>,
	 Suren Baghdasaryan <surenb@google.com>,
	 Michal Hocko <mhocko@suse.com>,  Ingo Molnar <mingo@redhat.com>,
	 Peter Zijlstra <peterz@infradead.org>,
	 Juri Lelli <juri.lelli@redhat.com>,
	 Vincent Guittot <vincent.guittot@linaro.org>,
	 Dietmar Eggemann <dietmar.eggemann@arm.com>,
	 Steven Rostedt <rostedt@goodmis.org>,
	 Ben Segall <bsegall@google.com>,  Mel Gorman <mgorman@suse.de>,
	 Valentin Schneider <vschneid@redhat.com>,
	 K Prateek Nayak <kprateek.nayak@amd.com>,
	 Kees Cook <kees@kernel.org>,
	 John Johansen <john.johansen@canonical.com>,
	 Georgia Garcia <georgia.garcia@canonical.com>,
	 Paul Moore <paul@paul-moore.com>,
	 James Morris <jmorris@namei.org>,
	 "Serge E. Hallyn" <serge@hallyn.com>,
	me@black-desk.cn,  linux-fsdevel@vger.kernel.org,
	linux-kernel@vger.kernel.org,  linux-mm@kvack.org,
	apparmor@lists.ubuntu.com,
	 linux-security-module@vger.kernel.org,
	linux-api@vger.kernel.org
Subject: Re: [PATCH v2 0/3] pidfd: add task path ioctls
Date: Fri, 04 Sep 2026 16:53:07 +0200	[thread overview]
Message-ID: <lhuecf9cbl8.fsf@oldenburg.str.redhat.com> (raw)
In-Reply-To: <20260831-pidfd-get-paths-v2-0-c59ea6a21b72@black-desk.cn> (Chen Linxuan via's message of "Mon, 31 Aug 2026 10:59:05 +0800")

* Chen Linxuan via:

> This series adds PIDFD_GET_EXE, PIDFD_GET_CWD, and PIDFD_GET_ROOT. Each
> ioctl takes no argument and returns a close-on-exec O_PATH file
> descriptor referencing the corresponding task path.  The new ioctls use
> the same ptrace permission check and nonzero-argument rejection as the
> existing pidfd namespace ioctls.

How would one upgrade the O_PATH descriptor to a full descriptor without
a mounted /proc?

Thanks,
Florian


  parent reply	other threads:[~2026-09-04 14:53 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-08-31  2:59 Chen Linxuan via B4 Relay
2026-08-31  2:59 ` [PATCH v2 1/3] fs: Introduce task path helpers Chen Linxuan via B4 Relay
2026-08-31  2:59 ` [PATCH v2 2/3] pidfd: Use scoped cleanup for task access Chen Linxuan via B4 Relay
2026-08-31  2:59 ` [PATCH v2 3/3] pidfd: Add task path ioctls Chen Linxuan via B4 Relay
2026-08-31  8:49 ` [PATCH v2 0/3] pidfd: add " Christian Brauner
2026-09-02  6:47   ` Chen Linxuan
2026-09-04 14:53 ` Florian Weimer [this message]
2026-09-04 16:54   ` Chen Linxuan

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=lhuecf9cbl8.fsf@oldenburg.str.redhat.com \
    --to=fweimer@redhat.com \
    --cc=akpm@linux-foundation.org \
    --cc=apparmor@lists.ubuntu.com \
    --cc=brauner@kernel.org \
    --cc=bsegall@google.com \
    --cc=david@kernel.org \
    --cc=devnull+me.black-desk.cn@kernel.org \
    --cc=dietmar.eggemann@arm.com \
    --cc=georgia.garcia@canonical.com \
    --cc=jack@suse.cz \
    --cc=jmorris@namei.org \
    --cc=john.johansen@canonical.com \
    --cc=juri.lelli@redhat.com \
    --cc=kees@kernel.org \
    --cc=kprateek.nayak@amd.com \
    --cc=liam@infradead.org \
    --cc=linux-api@vger.kernel.org \
    --cc=linux-fsdevel@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-mm@kvack.org \
    --cc=linux-security-module@vger.kernel.org \
    --cc=ljs@kernel.org \
    --cc=me@black-desk.cn \
    --cc=mgorman@suse.de \
    --cc=mhocko@suse.com \
    --cc=mingo@redhat.com \
    --cc=paul@paul-moore.com \
    --cc=peterz@infradead.org \
    --cc=rostedt@goodmis.org \
    --cc=rppt@kernel.org \
    --cc=serge@hallyn.com \
    --cc=surenb@google.com \
    --cc=vbabka@kernel.org \
    --cc=vincent.guittot@linaro.org \
    --cc=viro@zeniv.linux.org.uk \
    --cc=vschneid@redhat.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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox
all inboxes | Powered by JetHome®