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SubjectRe: [PATCH 3/4] ima: don't ignore INTEGRITY_UNKNOWN EVM status
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On 5/20/2019 11:20 PM, Mimi Zohar wrote:
> On Thu, 2019-05-16 at 18:12 +0200, Roberto Sassu wrote:
>> diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt
>> index 52e6fbb042cc..80e1c233656b 100644
>> --- a/Documentation/admin-guide/kernel-parameters.txt
>> +++ b/Documentation/admin-guide/kernel-parameters.txt
>> @@ -1588,6 +1588,9 @@
>> Format: { "off" | "enforce" | "fix" | "log" }
>> default: "enforce"
>>
>> + ima_appraise_req_evm
>> + [IMA] require EVM for appraisal with file digests.
>
> As much as possible we want to limit the number of new boot command
> line options as possible.  Is there a reason for not extending
> "ima_appraise=" with "require-evm" or "enforce-evm"?

ima-appraise= can be disabled with CONFIG_IMA_APPRAISE_BOOTPARAM, which
probably is done when the system is in production.

Should I allow to use ima-appraise=require-evm even if
CONFIG_IMA_APPRAISE_BOOTPARAM=n?

Thanks

Roberto

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HUAWEI TECHNOLOGIES Duesseldorf GmbH, HRB 56063
Managing Director: Bo PENG, Jian LI, Yanli SHI

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