Date: Fri, 23 Feb 2001 04:26:41 -0800 From: "David O'Brien" <TrimYourCc@NUXI.com> To: Marcel Moolenaar <marcel@cup.hp.com> Cc: arch@FreeBSD.org Subject: Re: sysctl kern.fallback_elf_brand Message-ID: <20010223042641.B2539@dragon.nuxi.com> In-Reply-To: <3A960EF8.75C3FC53@cup.hp.com>; from marcel@cup.hp.com on Thu, Feb 22, 2001 at 11:19:20PM -0800 References: <3A960EF8.75C3FC53@cup.hp.com>
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On Thu, Feb 22, 2001 at 11:19:20PM -0800, Marcel Moolenaar wrote:
> One problem with this is that unbranded static Linux binaries are
> executed as FreeBSD native binaries and there's a high chance of them
> rebooting the machine if run as root.
I've never seen that. Everyone I've every tried just dumped core. Have
you really seen running one reboot the machine?
> I think we need to disable the fallback ELF branding when no ABI
> compatibility module is loaded.
That would be OK to me.
> Of course, we can also set the default to 3 (=Linux) under the
> assumption that the Linuxulator is the most frequently used ABI module.
This would not be.
> Thoughts?
The real fix is to teach the ELF image loader to read the .note.ABI-tag
section. Then statically linked Linux binaries would be correctly
identified [since our branding scheme isn't accepted by anyone other than
us].
--
-- David (obrien@FreeBSD.org)
GNU is Not Unix / Linux Is Not UniX
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