# Re: \[PATCH v2 02/10\] userns: Add per user namespace sysctls.

- List: linux-api
- 2 messages, 2 authors
- Page: https://ratatoskr.run/linux-api/2016/07/109794/t

## Re: \[PATCH v2 02/10\] userns: Add per user namespace sysctls.

- From: Eric W. Biederman \<hidden\>
- Date: 2016-07-26 00:15:07 
- Message: https://ratatoskr.run/linux-api/2016/07/109794.md

```text
"Eric W. Biederman" [ref] writes:

> Limit per userns sysctls to only be opened for write by a holder
> of CAP_SYS_RESOURCE.
>
> Add all of the necessary boilerplate for having per user namespace
> sysctls.

> @@ -141,6 +215,7 @@ void free_user_ns(struct user_namespace *ns)
>  
>  	do {
>  		parent = ns->parent;
> +		retire_userns_sysctls(ns);
^^^^^^^^^^ Unfortunately it is not safe to call a sleeping function here
           so this part needs to be taken back to the drawing board.
 
           Which means this change gets has to wait for next cycle.
>  #ifdef CONFIG_PERSISTENT_KEYRINGS
>  		key_put(ns->persistent_keyring_register);
>  #endif

Eric
```

## Re: \[PATCH v2 02/10\] userns: Add per user namespace sysctls.

- From: David Miller \<davem@davemloft.net\>
- Date: 2016-07-26 00:24:10 
- Message: https://ratatoskr.run/linux-api/2016/07/109795.md

```text
From: <redacted> (Eric W. Biederman)
Date: Mon, 25 Jul 2016 19:02:01 -0500

>            Which means this change gets has to wait for next cycle.

Ok.
```