[CRIU] [PATCH] Add root mount point of container as irmap hint

[Pavel Emelyanov]

On 12/08/2014 07:25 AM, Nikolay Plotnik wrote:
> From 99e31b5263ee01f177a9c02368de1610d1b807a3 Mon Sep 17 00:00:00 2001
> From: Nikolay Plotnik <nikolay.plotnik at gmail.com <mailto:nikolay.plotnik at gmail.com>>
> Date: Mon, 8 Dec 2014 06:55:18 +0300
> Subject: [PATCH] Add root mount point of container as irmap hint
> 
> It appears container can have some notifications on its root path /.
> So irmap mechanism should handle it appropriately - without recursive walk into all filesystem tree.
> For that purposes new irmap hint with path ".." is added with special nr_kids value - 0.
> This value is used to identify directory from simple file.
> Two dots is used instead of one because of some irmap functions need non-absolute,
> relative to root path - they throw away first symbol in the hint path(/).
> 
> Signed-off-by: Nikolay Plotnik <nikolay.plotnik at gmail.com <mailto:nikolay.plotnik at gmail.com>>
> 
> ---
>  irmap.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/irmap.c b/irmap.c
> index 10ebb0a..c21339b 100644
> --- a/irmap.c
> +++ b/irmap.c
> @@ -57,6 +57,7 @@ static struct irmap hints[] = {
>         { .path = "/etc", .nr_kids = -1, },
>         { .path = "/var/spool", .nr_kids = -1, },
>         { .path = "/lib/udev", .nr_kids = -1, },
> +       { .path = "..", .nr_kids = 0, },

Can the path be "//"? Or at least the "/." one.
It would be much more understandable.

>         { .path = "/no-such-path", .nr_kids = -1, },
>         { },
>  };
> --
> 1.9.3
> 
> 
> 
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