[PATCH v6 03/17] ima: Namespace audit status flags

[Stefan Berger]

On 12/15/21 16:15, Mimi Zohar wrote:
> On Fri, 2021-12-10 at 14:47 -0500, Stefan Berger wrote:
>> From: Mehmet Kayaalp <mkayaalp at linux.vnet.ibm.com>
>>
>> The iint cache stores whether the file is measured, appraised, audited
>> etc. This patch moves the IMA_AUDITED flag into the per-namespace
>> ns_status, enabling IMA audit mechanism to audit the same file each time
>> it is accessed in a new namespace.
>>
>> The ns_status is not looked up if the CONFIG_IMA_NS is disabled or if
>> any of the IMA_NS_STATUS_ACTIONS (currently only IMA_AUDIT) is not
>> enabled.
> ^none of the ... are enabled.

You want me to rephrase it?


>
> thanks,
>
> Mimi
>
>> Read and write operations on the iint flags is replaced with function
>> calls. For reading, iint_flags() returns the bitwise AND of iint->flags
>> and ns_status->flags. The ns_status flags are masked with
>> IMA_NS_STATUS_FLAGS (currently only IMA_AUDITED). Similarly
>> set_iint_flags() only writes the masked portion to the ns_status flags,
>> while the iint flags is set as before. The ns_status parameter added to
>> ima_audit_measurement() is used with the above functions to query and
>> set the ns_status flags.
>>