[lvm-devel] [PATCH 05/14] Refactor and add code for (lv) 'convert_lv' get function.

[Petr Rockai]

Dave Wysochanski <dwysocha at redhat.com> writes:

> Signed-off-by: Dave Wysochanski <dwysocha at redhat.com>
Reviewed-By: Petr Rockai <prockai at redhat.com>

> --- a/lib/metadata/lv.c
> +++ b/lib/metadata/lv.c
> @@ -18,6 +18,26 @@
>  #include "activate.h"
>  #include "toolcontext.h"
>  
> +char *lv_convert_lv_dup(struct dm_pool *mem, const struct logical_volume *lv)
> +{
> +	struct lv_segment *seg;
> +	const char *name = NULL;
> +
> +	if (lv->status & CONVERTING) {
> +		if (lv->status & MIRRORED) {
> +			seg = first_seg(lv);
> +
> +			/* Temporary mirror is always area_num == 0 */
> +			if (seg_type(seg, 0) == AREA_LV &&
> +			    is_temporary_mirror_layer(seg_lv(seg, 0)))
> +				name = seg_lv(seg, 0)->name;
> +		}
> +	}
> +	if (name)
> +		return dm_pool_strndup(mem, name, strlen(name) + 1);
> +	return NULL;
> +}
strndup/strdup again, use of "name" can be eliminated as well...

> +
>  char *lv_move_pv_dup(struct dm_pool *mem, const struct logical_volume *lv)
>  {
>  	const char *name;

> --- a/lib/metadata/lv.h
> +++ b/lib/metadata/lv.h
> @@ -55,5 +55,6 @@ char *lv_tags_dup(const struct logical_volume *lv);
>  char *lv_path_dup(struct dm_pool *mem, const struct logical_volume *lv);
>  uint64_t lv_origin_size(const struct logical_volume *lv);
>  char *lv_move_pv_dup(struct dm_pool *mem, const struct logical_volume *lv);
> +char *lv_convert_lv_dup(struct dm_pool *mem, const struct logical_volume *lv);
>  
>  #endif

> --- a/lib/report/properties.c
> +++ b/lib/report/properties.c
> @@ -131,7 +131,7 @@ GET_LV_NUM_PROPERTY_FN(origin_size, lv_origin_size(lv))
>  #define _copy_percent_set _not_implemented_set
>  GET_LV_STR_PROPERTY_FN(move_pv, lv_move_pv_dup(lv->vg->vgmem, lv))
>  #define _move_pv_set _not_implemented_set
> -#define _convert_lv_get _not_implemented_get
> +GET_LV_STR_PROPERTY_FN(convert_lv, lv_convert_lv_dup(lv->vg->vgmem, lv))
>  #define _convert_lv_set _not_implemented_set
>  GET_LV_STR_PROPERTY_FN(lv_tags, lv_tags_dup(lv))
>  #define _lv_tags_set _not_implemented_set

> --- a/lib/report/report.c
> +++ b/lib/report/report.c
> @@ -392,19 +392,8 @@ static int _convertlv_disp(struct dm_report *rh, struct dm_pool *mem __attribute
>  {
>  	const struct logical_volume *lv = (const struct logical_volume *) data;
>  	const char *name = NULL;
> -	struct lv_segment *seg;
> -
> -	if (lv->status & CONVERTING) {
> -		if (lv->status & MIRRORED) {
> -			seg = first_seg(lv);
> -
> -			/* Temporary mirror is always area_num == 0 */
> -			if (seg_type(seg, 0) == AREA_LV &&
> -			    is_temporary_mirror_layer(seg_lv(seg, 0)))
> -				name = seg_lv(seg, 0)->name;
> -		}
> -	}
>  
> +	name = lv_convert_lv_dup(mem, lv);
>  	if (name)
>  		return dm_report_field_string(rh, field, &name);

Ok. Although we don't need a string duplicate here. On the other hand,
having a non-dup version of the above code and the dup version
implemented in terms of that would be overkill, I guess...

Yours,
   Petr.