[dm-devel] [PATCH v5 17/22] multipath -u: cleanup logic

[Benjamin Marzinski]

On Sat, Apr 14, 2018 at 12:00:10AM +0200, Martin Wilck wrote:
> The CMD_VALID_PATH logic is complex and hard to read and understand.
> This patch cleans it up a bit (preparing for folluw-up patches).
> It doesn't change any logic.
> 
Reviewed-by: Benjamin Marzinski <bmarzins at redhat.com>
> Signed-off-by: Martin Wilck <mwilck at suse.com>
> ---
>  multipath/main.c | 12 +++++++-----
>  1 file changed, 7 insertions(+), 5 deletions(-)
> 
> diff --git a/multipath/main.c b/multipath/main.c
> index 5d847f08..61ba90a6 100644
> --- a/multipath/main.c
> +++ b/multipath/main.c
> @@ -585,15 +585,17 @@ configure (struct config *conf, enum mpath_cmds cmd,
>  			if (is_failed_wwid(refwwid) == WWID_IS_FAILED) {
>  				r = 1;
>  				goto print_valid;
> -			} else if ((!find_multipaths_on(conf) &&
> +			}
> +			if ((!find_multipaths_on(conf) &&
>  				    ignore_wwids_on(conf)) ||
>  				   check_wwids_file(refwwid, 0) == 0)
>  				r = 0;
> -			if (r == 0 ||
> -			    !find_multipaths_on(conf) ||
> -			    !ignore_wwids_on(conf)) {
> +			if (!ignore_wwids_on(conf))
>  				goto print_valid;
> -			}
> +			/* At this point, either r==0 or find_multipaths_on. */
> +			if (r == 0)
> +				goto print_valid;
> +			/* find_multipaths_on: Fall through to path detection */
>  		}
>  	}
>  
> -- 
> 2.16.1