linux-kernel - Re: [RFC][v7][PATCH 0/9] Implement clone2() system call

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20090924175542.GA27678@x200>
Date:	Thu, 24 Sep 2009 21:57:20 +0400
From:	Alexey Dobriyan <adobriyan@...il.com>
To:	Sukadev Bhattiprolu <sukadev@...ux.vnet.ibm.com>
Cc:	linux-kernel@...r.kernel.org, Oren Laadan <orenl@...columbia.edu>,
	serue@...ibm.com, "Eric W. Biederman" <ebiederm@...ssion.com>,
	Pavel Emelyanov <xemul@...nvz.org>,
	Andrew Morton <akpm@...l.org>, torvalds@...ux-foundation.org,
	mikew@...gle.com, mingo@...e.hu, hpa@...or.com,
	Nathan Lynch <nathanl@...tin.ibm.com>, arnd@...db.de,
	peterz@...radead.org,
	Containers <containers@...ts.linux-foundation.org>,
	sukadev@...ibm.com
Subject: Re: [RFC][v7][PATCH 0/9] Implement clone2() system call

I don't like this even more.

Pid namespaces are hierarchical _and_ anonymous, so simply
set of numbers doesn't describe the final object.

struct pid isn't special, it's just another invariant if you like
as far as C/R is concerned, but system call is made special wrt pids.

What will be in an image? I hope "struct kstate_image_pid" with several
numbers and with references to such object from other places, so it
seems natural to do alloc_pid() with needed numbers and that attach new
shiny pid to where needed. But this clone_pid is only for task_struct's pids.
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/