[RFC PATCH v4 1/2] fuse: introduce new fs_type flag FS_IMA_NO_CACHE

[Miklos Szeredi]

On Fri, Feb 2, 2018 at 4:33 PM, Mimi Zohar <zohar at linux.vnet.ibm.com> wrote:
> On Fri, 2018-02-02 at 10:20 -0500, Mimi Zohar wrote:
>> Hi Miklos,
>>
>> On Tue, 2018-01-30 at 19:06 +0100, Dongsu Park wrote:
>> > From: Alban Crequy <alban at kinvolk.io>
>> >
>> > This new fs_type flag FS_IMA_NO_CACHE means files should be re-measured,
>> > re-appraised and re-audited each time. Cached integrity results should
>> > not be used.
>> >
>> > It is useful in FUSE because the userspace FUSE process can change the
>> > underlying files at any time without notifying the kernel.

I don't really have an understanding what IMA is doing, I think the
same thing applies to any network filesystem (i.e. ones with
d_revalidate).

Isn't that the case?

Thanks,
Miklos
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