From: Mark Rutland <mark.rutland@arm.com>
To: David Howells <dhowells@redhat.com>
Cc: lukas@wunner.de, linux-efi@vger.kernel.org,
linux-kernel@vger.kernel.org,
linux-security-module@vger.kernel.org,
Josh Boyer <jwboyer@fedoraproject.org>,
keyrings@vger.kernel.org
Subject: Re: [PATCH 5/6] efi: Disable secure boot if shim is in insecure mode [ver #2]
Date: Wed, 23 Nov 2016 13:38:17 +0000 [thread overview]
Message-ID: <20161123133817.GF24624@leverpostej> (raw)
In-Reply-To: <147986058486.13790.8455439853105793460.stgit@warthog.procyon.org.uk>
On Wed, Nov 23, 2016 at 12:23:04AM +0000, David Howells wrote:
> + /* See if a user has put shim into insecure mode. If so, and if the
> + * variable doesn't have the runtime attribute set, we might as well
> + * honor that.
> + */
> + size = sizeof(moksbstate);
> + status = get_efi_var(shim_MokSBState_name, &shim_guid,
> + &attr, &size, &moksbstate);
> +
> + /* If it fails, we don't care why. Default to secure */
> + if (status != EFI_SUCCESS)
> + return 1;
I was going to suggest branching to out_efi_err, but I see that wouldn't
work when EFI_NOT_FOUND was returned. It might be worth noting
explicitly that we can't use that, so as to avoid 'obvious' cleanup in
future.
Thanks,
Mark.
next prev parent reply other threads:[~2016-11-23 13:39 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-11-23 0:22 [PATCH 0/6] efi: Pass secure boot mode to kernel [ver #2] David Howells
2016-11-23 0:22 ` [PATCH 1/6] x86/efi: Allow invocation of arbitrary runtime services " David Howells
2016-11-23 0:22 ` [PATCH 2/6] arm/efi: " David Howells
2016-11-23 9:34 ` David Howells
2016-11-23 10:35 ` Ard Biesheuvel
2016-11-23 11:51 ` David Howells
2016-11-23 10:27 ` Mark Rutland
2016-11-23 11:46 ` David Howells
2016-11-23 13:38 ` Mark Rutland
2016-11-23 0:22 ` [PATCH 3/6] efi: Add SHIM and image security database GUID definitions " David Howells
2016-11-23 0:22 ` [PATCH 4/6] efi: Get the secure boot status " David Howells
2016-11-23 9:31 ` Lukas Wunner
2016-11-23 9:53 ` David Howells
2016-11-23 10:10 ` Lukas Wunner
2016-11-23 10:47 ` Mark Rutland
2016-11-23 11:25 ` David Howells
2016-11-23 13:42 ` Mark Rutland
2016-11-23 14:13 ` David Howells
2016-11-23 14:24 ` Mark Rutland
2016-11-23 14:55 ` David Howells
2016-11-29 18:11 ` Matthew Garrett
2016-11-30 16:51 ` David Howells
2016-11-23 0:23 ` [PATCH 5/6] efi: Disable secure boot if shim is in insecure mode " David Howells
2016-11-23 13:38 ` Mark Rutland [this message]
2016-11-23 0:23 ` [PATCH 6/6] efi: Add EFI_SECURE_BOOT bit " David Howells
2016-11-23 9:27 ` Lukas Wunner
2016-11-23 10:07 ` David Howells
2016-11-23 10:09 ` David Howells
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