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From: Mimi Zohar <zohar@linux.ibm.com>
To: Prakhar Srivastava <prsriva02@gmail.com>,
	linux-integrity@vger.kernel.org,
	linux-security-module@vger.kernel.org,
	linux-kernel@vger.kernel.org
Cc: roberto.sassu@huawei.com, vgoyal@redhat.com
Subject: Re: [PATCH V8 1/3] Define a new IMA hook to measure the boot command line arguments
Date: Thu, 13 Jun 2019 15:22:00 -0400
Message-ID: <1560453720.4805.46.camel@linux.ibm.com> (raw)
In-Reply-To: <20190612221549.28399-2-prsriva02@gmail.com>

Hi Prakhar,

Patches titles in the subject line need to be prefixed with the
subsystem, in this case "ima: ".

On Wed, 2019-06-12 at 15:15 -0700, Prakhar Srivastava wrote:
> This patch adds support in ima to measure kexec cmdline args
> during soft reboot(kexec_file_load).

Based on the patch title, the word "ima" is redundant.  Patch
descriptions are suppose to be written in the third person. "This
patch adds" is unnecessary.  Please review section 3 "Describe your
changes" in Documentation/process/submitting-patches.rst.

> 
> - A new ima hook ima_kexec_cmdline is defined to be called by the
> kexec code.
> - A new function process_buffer_measurement is defined to measure
> the buffer hash into the ima log.
> - A new func policy KEXEC_CMDLINE is defined to control the
>  measurement.[Suggested by Mimi]
> 
> Signed-off-by: Prakhar Srivastava <prsriva02@gmail.com>


> diff --git a/security/integrity/ima/ima_policy.c b/security/integrity/ima/ima_policy.c
> index fd9b01881d17..98e351e13557 100644
> --- a/security/integrity/ima/ima_policy.c
> +++ b/security/integrity/ima/ima_policy.c
> @@ -292,6 +292,13 @@ static bool ima_match_rules(struct ima_rule_entry *rule, struct inode *inode,
>  {
>  	int i;
>  
> +	/* only incase of KEXEC_CMDLINE, inode is NULL */
> +	if (func == KEXEC_CMDLINE) {
> +		if ((rule->flags & IMA_FUNC) &&
> +			(rule->func == func) && (!inode))

Thank you for fixing the other formatting issues.  Here's another one.
 Is checking !inode needed?

Mimi

> +			return true;
> +		return false;
> +	}
>  	if ((rule->flags & IMA_FUNC) &&
>  	    (rule->func != func && func != POST_SETATTR))
>  		return false;
> 


  parent reply index

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-06-12 22:15 [PATCH V8 0/3] Add support for measuring the boot command line during kexec_file_load Prakhar Srivastava
2019-06-12 22:15 ` [PATCH V8 1/3] Define a new IMA hook to measure the boot command line arguments Prakhar Srivastava
2019-06-13 19:10   ` James Morris
2019-06-13 19:22   ` Mimi Zohar [this message]
2019-06-14 17:48     ` prakhar srivastava
2019-06-12 22:15 ` [PATCH V8 2/3] Define a new ima template field buf Prakhar Srivastava
2019-06-13 19:15   ` James Morris
2019-06-13 19:59   ` Mimi Zohar
2019-06-14 10:57     ` Mimi Zohar
2019-06-14 14:14       ` Mimi Zohar
2019-06-14 17:52         ` prakhar srivastava
2019-06-12 22:15 ` [PATCH V8 3/3] Call ima_kexec_cmdline to measure the cmdline args Prakhar Srivastava
2019-06-12 22:31   ` Mimi Zohar
2019-06-13  8:26     ` Dave Young
2019-06-13 20:07       ` Mimi Zohar
2019-06-13 19:16   ` James Morris
2019-06-13 20:20   ` Mimi Zohar
2019-06-13 20:48 ` [PATCH V8 0/3] Add support for measuring the boot command line during kexec_file_load Mimi Zohar
2019-06-14 17:39   ` prakhar srivastava

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