From: dhowells@redhat.com (David Howells)
To: linux-security-module@vger.kernel.org
Subject: [PATCH 3/5] Add the ability to lock down access to the running kernel image
Date: Thu, 25 May 2017 07:53:22 +0100 [thread overview]
Message-ID: <19783.1495695202@warthog.procyon.org.uk> (raw)
In-Reply-To: <80bdc6c9-004b-800f-ffd0-4b5ebf8cdeba@schaufler-ca.com>
Casey Schaufler <casey@schaufler-ca.com> wrote:
> > +#ifdef CONFIG_LOCK_DOWN_KERNEL
> > +extern bool kernel_is_locked_down(void);
> > +#else
> > +static inline bool kernel_is_locked_down(void)
>
> Should this be a bool or an int? I can imagine that someone is going to want
> various different degrees of lock down for kernels. As an int you could
> return a bitmap indicating which features were locked. This would allow
> additional things to be locked down without changing the interface.
At the moment it makes no difference, since the return value is only ever
passed directly to an if-statement.
Also, do you have an idea as to how is should be divided up?
There aren't so many cases, at least not yet, that they can't be fixed up,
perhaps with a coccinelle script.
David
--
To unsubscribe from this list: send the line "unsubscribe linux-security-module" in
the body of a message to majordomo at vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
next prev parent reply other threads:[~2017-05-25 6:53 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-05-24 14:45 [PATCH 0/5] security, efi: Set lockdown if in secure boot mode David Howells
2017-05-24 14:45 ` [PATCH 1/5] efi: Move the x86 secure boot switch to generic code David Howells
2017-05-26 7:59 ` joeyli
2017-05-24 14:45 ` [PATCH 2/5] efi: Add EFI_SECURE_BOOT bit David Howells
2017-05-26 8:06 ` joeyli
2017-05-24 14:45 ` [PATCH 3/5] Add the ability to lock down access to the running kernel image David Howells
2017-05-24 15:36 ` Casey Schaufler
2017-05-25 6:53 ` David Howells [this message]
2017-05-25 18:18 ` Casey Schaufler
2017-05-26 12:43 ` David Howells
2017-05-26 17:08 ` joeyli
2017-05-26 8:16 ` joeyli
2017-05-24 14:45 ` [PATCH 4/5] efi: Lock down the kernel if booted in secure boot mode David Howells
2017-05-26 8:29 ` joeyli
2017-05-24 14:46 ` [PATCH 5/5] Add a sysrq option to exit " David Howells
2017-05-27 4:06 ` joeyli
2017-05-30 10:49 ` James Morris
2017-05-30 18:57 ` [PATCH 0/5] security, efi: Set lockdown if in " Ard Biesheuvel
2017-05-31 9:23 ` David Howells
2017-05-31 11:39 ` Ard Biesheuvel
2017-05-31 13:33 ` David Howells
2017-05-31 14:06 ` Ard Biesheuvel
2017-06-06 9:34 ` David Howells
2017-06-09 17:33 ` Ard Biesheuvel
2017-06-09 19:22 ` Kees Cook
-- strict thread matches above, loose matches on Subject: below --
2017-04-06 12:49 [PATCH 1/5] efi: Move the x86 secure boot switch to generic code David Howells
2017-04-06 12:50 ` [PATCH 3/5] Add the ability to lock down access to the running kernel image David Howells
2017-04-06 22:45 ` James Morris
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=19783.1495695202@warthog.procyon.org.uk \
--to=dhowells@redhat.com \
--cc=linux-security-module@vger.kernel.org \
/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
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
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).