Re: [PATCH] user_ns: Add support for unprivileged remount

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Zhao Hongjiang <zhaohongjiang37@xxxxxxxxx> writes:

> From: Zhao Hongjiang <zhaohongjiang@xxxxxxxxxx>
>
> Relax the permission checks to allow unprivileged users that have
> CAP_SYS_ADMIN permissions in the user namespace referred to by the
> current mount namespace to be allowed to remount filesystems.

Remount in general make filesystem configuration changes not mount level
changes.

In general remount is not safe for unprivielged users.

Do you have a use case where you need to remount a filesystem?

Eric
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