[CRIU] [PATCH 09/11] file: use ralative path for retoring files

[Pavel Emelyanov]

On 07/25/2014 01:12 AM, Andrey Vagin wrote:
> openat() is used to open files, so absolute pathes can't be used
> 
> Signed-off-by: Andrey Vagin <avagin at openvz.org>
> ---
>  files-reg.c | 7 ++++++-
>  1 file changed, 6 insertions(+), 1 deletion(-)
> 
> diff --git a/files-reg.c b/files-reg.c
> index b1cb78b..48bbbf4 100644
> --- a/files-reg.c
> +++ b/files-reg.c
> @@ -959,9 +959,14 @@ struct file_desc *collect_special_file(u32 id)
>  static int collect_one_regfile(void *o, ProtobufCMessage *base)
>  {
>  	struct reg_file_info *rfi = o;
> +	static char dot[] = ".";
>  
>  	rfi->rfe = pb_msg(base, RegFileEntry);
> -	rfi->path = rfi->rfe->name;
> +	/* cut the first slash, because openat() is used for access */
> +	if (rfi->rfe->name[1] == '\0')
> +		rfi->path = dot;

Add comment that we change "/foo" into "foo" and "/" into "."

> +	else
> +		rfi->path = rfi->rfe->name + 1;
>  	rfi->remap = NULL;
>  	rfi->size_checked = false;
>  
>