[PATCH] partitions: dos: add partuuid string for logical partitions

[Sascha Hauer]

On Mon, May 09, 2016 at 12:55:08PM +0200, Uwe Kleine-König wrote:
> Commit bc31d85c6e23 ("cdev: Add partuuid string to struct cdev") added
> partuuid strings for dos partitions but only for the (up to) four
> primary partitions. Do the same for the logical partitions. Their
> numbers start at 5 independently of the number of available primary
> partitions.
> 
> Signed-off-by: Uwe Kleine-König <u.kleine-koenig at pengutronix.de>
> ---
>  common/partitions/dos.c | 9 +++++++--
>  1 file changed, 7 insertions(+), 2 deletions(-)

Applied, thanks

Sascha

> 
> diff --git a/common/partitions/dos.c b/common/partitions/dos.c
> index e0cb35627d33..5f08e253ee59 100644
> --- a/common/partitions/dos.c
> +++ b/common/partitions/dos.c
> @@ -117,11 +117,12 @@ static int dos_get_disk_signature(struct param_d *p, void *_priv)
>  }
>  
>  static void dos_extended_partition(struct block_device *blk, struct partition_desc *pd,
> -		struct partition *partition)
> +		struct partition *partition, uint32_t signature)
>  {
>  	uint8_t *buf = dma_alloc(SECTOR_SIZE);
>  	uint32_t ebr_sector = partition->first_sec;
>  	struct partition_entry *table = (struct partition_entry *)&buf[0x1be];
> +	unsigned partno = 5;
>  
>  	while (pd->used_entries < ARRAY_SIZE(pd->parts)) {
>  		int rc, i;
> @@ -153,7 +154,11 @@ static void dos_extended_partition(struct block_device *blk, struct partition_de
>  			get_unaligned_le32(&table[0].partition_start);
>  		pd->parts[n].size = get_unaligned_le32(&table[0].partition_size);
>  		pd->parts[n].dos_partition_type = table[0].type;
> +		if (signature)
> +			sprintf(pd->parts[n].partuuid, "%08x-%02u",
> +				signature, partno);
>  		pd->used_entries++;
> +		partno++;
>  
>  		/* the second entry defines the start of the next ebr if != 0 */
>  		if (get_unaligned_le32(&table[1].partition_start))
> @@ -231,7 +236,7 @@ static void dos_partition(void *buf, struct block_device *blk,
>  	}
>  
>  	if (extended_partition)
> -		dos_extended_partition(blk, pd, extended_partition);
> +		dos_extended_partition(blk, pd, extended_partition, signature);
>  
>  	dsp = xzalloc(sizeof(*dsp));
>  	dsp->blk = blk;
> -- 
> 2.8.0.rc3
> 
> 
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