[CRIU] [PATCH v4 02/17] filemap: collect mapped file fs type

[Pavel Emelyanov]

On 05/20/2016 02:36 PM, Stanislav Kinsburskiy wrote:
> It will be used later to define wheither this file is unreachable on restore
> (located on NFS, for example)
> 
> Signed-off-by: Stanislav Kinsburskiy <skinsbursky at virtuozzo.com>
> ---
>  criu/cr-dump.c |    8 ++++++++
>  1 file changed, 8 insertions(+)
> 
> diff --git a/criu/cr-dump.c b/criu/cr-dump.c
> index 8ef46a4..6cbef99 100644
> --- a/criu/cr-dump.c
> +++ b/criu/cr-dump.c
> @@ -371,12 +371,20 @@ static int dump_filemap(pid_t pid, struct vma_area *vma_area,

Why only for mapped files?

>  	struct fd_parms p = FD_PARMS_INIT;
>  	VmaEntry *vma = vma_area->e;
>  	int ret = 0;
> +	struct statfs fst;
>  	u32 id;
>  
>  	BUG_ON(!vma_area->vmst);
>  	p.stat = *vma_area->vmst;
>  	p.mnt_id = vma_area->mnt_id;
>  
> +	if (fstatfs(vma_area->vm_file_fd, &fst)) {
> +		pr_perror("Unable to statfs fd %d", vma_area->vm_file_fd);
> +		return -1;
> +	}
> +
> +	p.fs_type = fst.f_type;
> +
>  	/*
>  	 * AUFS support to compensate for the kernel bug
>  	 * exposing branch pathnames in map_files.
> 
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>