[CRIU] [PATCH v4 03/17] regular files: protobuf "unreachable" field introduced

[Pavel Emelyanov]

On 05/20/2016 02:37 PM, Stanislav Kinsburskiy wrote:
> Will be used to determine whether this file have to be created prior to  open
> on restore.
> 
> Signed-off-by: Stanislav Kinsburskiy <skinsbursky at virtuozzo.com>
> ---
>  criu/files-reg.c     |   10 ++++++++++
>  images/regfile.proto |    1 +
>  2 files changed, 11 insertions(+)
> 
> diff --git a/criu/files-reg.c b/criu/files-reg.c
> index 73b2908..e3da972 100644
> --- a/criu/files-reg.c
> +++ b/criu/files-reg.c
> @@ -1101,6 +1101,13 @@ static bool should_check_size(int flags)
>  	return true;
>  }
>  
> +static bool path_is_unreachable(struct fd_link *link, const struct fd_parms *parms)
> +{
> +	if (parms->fs_type == NFS_SUPER_MAGIC)
> +		return true;
> +	return false;
> +}
> +
>  int dump_one_reg_file(int lfd, u32 id, const struct fd_parms *p)
>  {
>  	struct fd_link _link, *link;
> @@ -1168,6 +1175,9 @@ ext:
>  	rfe.has_mode = true;
>  	rfe.mode = p->stat.st_mode;
>  
> +	rfe.has_unreachable	= true;
> +	rfe.unreachable		= path_is_unreachable(link, p);

Did you try to create remap entry for such files?

> +
>  	rimg = img_from_set(glob_imgset, CR_FD_REG_FILES);
>  	return pb_write_one(rimg, &rfe, PB_REG_FILE);
>  }
> diff --git a/images/regfile.proto b/images/regfile.proto
> index 25b1e41..f88603e 100644
> --- a/images/regfile.proto
> +++ b/images/regfile.proto
> @@ -11,4 +11,5 @@ message reg_file_entry {
>  	optional uint64		size	= 8;
>  	optional bool		ext	= 9;
>  	optional uint32         mode    = 10;
> +	optional bool		unreachable     = 11;
>  }
> 
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> .
>