LKML Archive on lore.kernel.org
help / color / mirror / Atom feed
From: ebiederm@xmission.com (Eric W. Biederman)
To: Andrew Morton <akpm@osdl.org>
Cc: Linux Containers <containers@lists.osdl.org>,
	<linux-kernel@vger.kernel.org>
Subject: [PATCH 0/4] Fix the binary ipc and uts namespace sysctls.
Date: Sun, 26 Nov 2006 21:59:26 -0700	[thread overview]
Message-ID: <m1hcwlmqmp.fsf@ebiederm.dsl.xmission.com> (raw)


The binary interface to the namespace sysctls was never implemented
resulting in some really weird things if you attempted to use
sys_sysctl to read your hostname for example.

This patch series simples the code a little and implements the binary
sysctl interface.

In testing this patch series I discovered that our 32bit compatibility
for the binary  sysctl interface is imperfect.  In particular
KERN_SHMMAX and KERN_SMMALL are size_t sized quantities and are
returned as 8 bytes on to 32bit binaries using a x86_64 kernel.  
However this has existing for a long time so it is not a new
regression with the namespace work.

Gads the whole sysctl thing needs work before it stops being easy
to shoot yourself in the foot.

Looking forward a little bit we need a better way to handle sysctls
and namespaces as our current technique will not work for the network
namespace.  I think something based on the current overlapping sysctl
trees will work but the proc side needs to be redone before we can
use it.

Eric




             reply	other threads:[~2006-11-27  5:01 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2006-11-27  4:59 Eric W. Biederman [this message]
2006-11-27  5:05 ` [PATCH 1/4] sysctl: Simplify sysctl_uts_string Eric W. Biederman
2006-11-27  5:05 ` [PATCH 2/4] sysctl: Implement sysctl_uts_string Eric W. Biederman
2006-11-27  5:05 ` [PATCH 3/4] sysctl: Simplify ipc ns specific sysctls Eric W. Biederman
2006-11-29  4:56   ` Serge E. Hallyn
2006-11-27  5:05 ` [PATCH 4/4] sysctl: Fix sys_sysctl interface of ipc sysctls Eric W. Biederman
2006-11-27 20:22 ` [PATCH 0/4] Fix the binary ipc and uts namespace sysctls Herbert Poetzl
2006-11-27 22:40   ` Eric W. Biederman
2006-11-28 14:32     ` Herbert Poetzl
2006-11-28 15:38       ` Eric W. Biederman
2006-11-28 16:21         ` Herbert Poetzl
2006-12-04 22:32         ` [PATCH] Fix linux banner utsname information Herbert Poetzl
2006-12-05 17:24           ` Herbert Poetzl
2006-12-06 18:32             ` Herbert Poetzl

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=m1hcwlmqmp.fsf@ebiederm.dsl.xmission.com \
    --to=ebiederm@xmission.com \
    --cc=akpm@osdl.org \
    --cc=containers@lists.osdl.org \
    --cc=linux-kernel@vger.kernel.org \
    --subject='Re: [PATCH 0/4] Fix the binary ipc and uts namespace sysctls.' \
    /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

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).