linux-kernel - Re: [PATCH 06b/26] Security: Make NFSD work with detached security

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] [day] [month] [year] [list]

Message-ID: <29216.1200610926@redhat.com>
Date:	Thu, 17 Jan 2008 23:02:06 +0000
From:	David Howells <dhowells@...hat.com>
To:	unlisted-recipients:; (no To-header on input)
Cc:	dhowells@...hat.com, "J. Bruce Fields" <bfields@...ldses.org>,
	sds@...ho.nsa.gov, casey@...aufler-ca.com,
	Trond.Myklebust@...app.com, neilb@...e.de,
	linux-kernel@...r.kernel.org, selinux@...ho.nsa.gov,
	linux-security-module@...r.kernel.org, nfs@...ts.sourceforge.net
Subject: Re: [PATCH 06b/26] Security: Make NFSD work with detached security

David Howells <dhowells@...hat.com> wrote:

> J. Bruce Fields <bfields@...ldses.org> wrote:
> 
> > Just curious--why?  Are get_kernel_security(), etc., particularly
> > expensive?
> 
> It involves a kmalloc().  That means an extra possibility for an error.  Plus
> it may allow you to cache the result of checking whether, say, SELinux
> security labels are allowed to be set when passed over NFS (if such is
> possible).

Apart from that, though, no, it's not particularly expensive.

David
--
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/