From: Lennart Poettering <mzxreary@0pointer.de>
To: Davidlohr Bueso <dave@gnu.org>
Cc: Hugh Dickins <hughd@google.com>,
Andrew Morton <akpm@linux-foundation.org>,
lkml <linux-kernel@vger.kernel.org>,
linux-mm@kvack.org, Kay Sievers <kay.sievers@vrfy.org>
Subject: Re: [RFC PATCH] tmpfs: support user quotas
Date: Sun, 6 Nov 2011 23:10:38 +0100 [thread overview]
Message-ID: <20111106221038.GB11672@tango.0pointer.de> (raw)
In-Reply-To: <1320614101.3226.5.camel@offbook>
On Sun, 06.11.11 18:15, Davidlohr Bueso (dave@gnu.org) wrote:
> From: Davidlohr Bueso <dave@gnu.org>
>
> This patch adds a new RLIMIT_TMPFSQUOTA resource limit to restrict an individual user's quota across all mounted tmpfs filesystems.
> It's well known that a user can easily fill up commonly used directories (like /tmp, /dev/shm) causing programs to break through DoS.
Thanks a lot for this work! One comment without looking at the patch in detail:
> + if (atomic_long_read(&user->shmem_bytes) + len >
> + rlimit(RLIMIT_TMPFSQUOTA))
> + return -ENOSPC;
This should be EDQUOT "Disk quota exceeded", not ENOSPC "No space left
on device".
Lennart
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Lennart Poettering - Red Hat, Inc.
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next prev parent reply other threads:[~2011-11-06 22:10 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-11-06 21:15 [RFC PATCH] tmpfs: support user quotas Davidlohr Bueso
2011-11-06 22:10 ` Lennart Poettering [this message]
2011-11-07 7:31 ` Christoph Hellwig
2011-11-07 11:29 ` Lennart Poettering
2011-11-07 14:20 ` Davidlohr Bueso
2011-11-07 13:58 ` Alan Cox
2011-11-07 14:27 ` Kay Sievers
2011-11-07 22:53 ` Alan Cox
2011-11-07 22:57 ` Glauber Costa
2011-11-07 23:07 ` Lennart Poettering
2011-11-07 23:43 ` Alan Cox
2011-11-08 0:25 ` Lennart Poettering
2011-11-08 0:46 ` Alan Cox
2011-11-07 14:30 ` Lennart Poettering
2011-11-07 22:15 ` KOSAKI Motohiro
2011-11-07 22:37 ` Kay Sievers
2011-11-08 0:33 ` KOSAKI Motohiro
2011-11-07 23:01 ` Alan Cox
2011-11-07 9:11 ` Valdis.Kletnieks
2011-11-07 14:49 ` Davidlohr Bueso
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