Re: [PATCH V3 07/10] Secure boot: Add a dummy kernel parameterthat will switch on Secure Boot mode

[joeyli]

Hi Josh, 

æ äï2012-09-25 æ 09:08 -0400ïJosh Boyer æåï
> This forcibly drops CAP_COMPROMISE_KERNEL from both cap_permitted and cap_bset
> in the init_cred struct, which everything else inherits from.  This works on
> any machine and can be used to develop even if the box doesn't have UEFI.
> 
> Signed-off-by: Josh Boyer <jwboyer@xxxxxxxxxx>
> ---
>  Documentation/kernel-parameters.txt |  7 +++++++
>  kernel/cred.c                       | 17 +++++++++++++++++
>  2 files changed, 24 insertions(+)
> 
> diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
> index 9b2b8d3..93978d5 100644
...
> diff --git a/kernel/cred.c b/kernel/cred.c
> index de728ac..7e6e83f 100644
> --- a/kernel/cred.c
> +++ b/kernel/cred.c
> @@ -623,6 +623,23 @@ void __init cred_init(void)
>  				     0, SLAB_HWCACHE_ALIGN|SLAB_PANIC, NULL);
>  }
>  
> +void __init secureboot_enable()
> +{
...
> +
> +/* Dummy Secure Boot enable option to fake out UEFI SB=1 */
> +static int __init secureboot_enable_opt(char *str)
> +{
> +	int sb_enable = !!simple_strtol(str, NULL, 0);
> +	if (sb_enable)
> +		secureboot_enable();
> +	return 1;
> +}
> +__setup("secureboot_enable=", secureboot_enable_opt);
> +
>  

Tahashi has a good idea for use strtobool to allow
'secureboot_enable=yes' works. Please consider the following change.


Thanks a lot!
Joey Lee

>From f6841a476f3d332fe7b04cb716e0b518cccd5055 Mon Sep 17 00:00:00 2001
From: Lee, Chun-Yi <jlee@xxxxxxxx>
Date: Mon, 29 Oct 2012 16:36:57 +0800
Subject: [PATCH] efi: more user-friendly secureboot_enable parameter

From: Takashi Iwai <tiwai@xxxxxxx>

Use strtobool can allow 'secureboot_enable=yes', it's more user-friendly.

Signed-off-by: Lee, Chun-Yi <jlee@xxxxxxxx>
---
 kernel/cred.c |    5 +++--
 1 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/kernel/cred.c b/kernel/cred.c
index 3f5be65..70897a2 100644
--- a/kernel/cred.c
+++ b/kernel/cred.c
@@ -633,9 +633,10 @@ void __init secureboot_enable()
 /* Dummy Secure Boot enable option to fake out UEFI SB=1 */
 static int __init secureboot_enable_opt(char *str)
 {
-	int sb_enable = !!simple_strtol(str, NULL, 0);
-	if (sb_enable)
+	bool sb_enable;
+	if (!strtobool(str, &sb_enable) && sb_enable)
 		secureboot_enable();
+
 	return 1;
 }
 __setup("secureboot_enable=", secureboot_enable_opt);
-- 
1.6.0.2




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