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Open Source and information security mailing list archives
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Date: Wed, 06 Feb 2013 08:41:23 -0800 From: "H. Peter Anvin" <hpa@...or.com> To: "Kasatkin, Dmitry" <dmitry.kasatkin@...el.com> CC: Peter Jones <pjones@...hat.com>, linux-security-module@...r.kernel.org, linux-kernel@...r.kernel.org Subject: Re: [RFC 2/2] initramfs with digital signature protection The cleanup is not a umount, it is actually a tree walk unlinking the contents. "Kasatkin, Dmitry" <dmitry.kasatkin@...el.com> wrote: >On Wed, Feb 6, 2013 at 7:04 AM, H. Peter Anvin <hpa@...or.com> wrote: >> On 02/05/2013 02:09 PM, Kasatkin, Dmitry wrote: >>> >>> >>> It should not be like that. Actually when pre-init exits, cleanup >code >>> umount tmpfs, which in turn cleanups the RAM. >>> >> >> It doesn't quite... the rootfs is permanent. This is also only one >usage >> mode: there are quite a few Linux systems running directly out of >initramfs. >> > >rootfs is not permanent when it is ramfs. It is cleaned up on switch >root. >It is easy to find out that it is empty by mounting : mount -t ramfs >rootfs /mnt/ > >In the case of running from normal storage, of course, there is >ridicules remove the content. > >- Dmitry > > >> -hpa >> >> >> -- >> H. Peter Anvin, Intel Open Source Technology Center >> I work for Intel. I don't speak on their behalf. >> -- Sent from my mobile phone. Please excuse brevity and lack of formatting. -- 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/
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