Re: kjournald keeps reference to namespace

[ebiederm@xmission.com (Eric W. Biederman)]

Björn Steinbrink <B.Steinbrink@gmx.de> writes:

> On 2006.02.18 17:32:27 +0100, Björn Steinbrink wrote:
>> > In daemonize() a new thread gets cleaned up and 'merged' with init_task.
>> > The current fs_struct is handled there, but not the current namespace.
>> > The following patch adds the namespace part.
>> > 
>> > Signed-off-by: Björn Steinbrink <B.Steinbrink@gmx.de>
>> > ---
>> 
>> Oops, forgot the increment the namespace usage count...
>
> Ok, this time with the get_namespace wrapper, thanks to Eric Biederman
> for pointing that out to me.

Acked-by: Eric Biederman <ebiederm@xmission.com>

Note we can't ever count on using our parents namespace because
we already have called exit_fs(), which is the only way to the
namespace from a process.

> ---
>
>
> diff -NurpP --minimal linux-2.6.16-rc4/kernel/exit.c
> linux-2.6.16-rc4-ns/kernel/exit.c
> --- linux-2.6.16-rc4/kernel/exit.c	2006-02-18 13:59:59.000000000 +0100
> +++ linux-2.6.16-rc4-ns/kernel/exit.c	2006-02-18 17:57:21.000000000 +0100
> @@ -360,6 +360,9 @@ void daemonize(const char *name, ...)
>  	fs = init_task.fs;
>  	current->fs = fs;
>  	atomic_inc(&fs->count);
> +	exit_namespace(current);
> +	current->namespace = init_task.namespace;
> +	get_namespace(current->namespace);
>   	exit_files(current);
>  	current->files = init_task.files;
>  	atomic_inc(&current->files->count);