[PATCH v2 5/7] partmap/gpt: add print function for guids

[Oliver Steffen]

Code to print gpt patition guids has been duplicated in multiple places.
Add a common function for that.

Signed-off-by: Oliver Steffen <osteffen@redhat.com>
---
 grub-core/partmap/gpt.c      | 13 +++++++++++++
 include/grub/gpt_partition.h |  6 ++++++
 2 files changed, 19 insertions(+)

diff --git a/grub-core/partmap/gpt.c b/grub-core/partmap/gpt.c
index 075cc96f1..e0da7e885 100644
--- a/grub-core/partmap/gpt.c
+++ b/grub-core/partmap/gpt.c
@@ -227,6 +227,19 @@ static struct grub_partition_map grub_gpt_partition_map =
 #endif
   };
 
+int
+grub_gpt_part_guid_snprint (char *str, grub_size_t n, const 
grub_gpt_part_guid_t *guid)
+{
+  return grub_snprintf (str, n,
+                        GRUB_PRIxGPT_GUID,
+                        grub_le_to_cpu32 (guid->data1),
+                        grub_le_to_cpu16 (guid->data2),
+                        grub_le_to_cpu16 (guid->data3),
+                        guid->data4[0], guid->data4[1], guid->data4[2],
+                        guid->data4[3], guid->data4[4], guid->data4[5],
+                        guid->data4[6], guid->data4[7]);
+}
+
 GRUB_MOD_INIT(part_gpt)
 {
   grub_partition_map_register (&grub_gpt_partition_map);
diff --git a/include/grub/gpt_partition.h b/include/grub/gpt_partition.h
index 7a93f4329..9b1660322 100644
--- a/include/grub/gpt_partition.h
+++ b/include/grub/gpt_partition.h
@@ -50,6 +50,9 @@ typedef struct grub_gpt_part_guid grub_gpt_part_guid_t;
        { 0x85, 0xD2, 0xE1, 0xE9, 0x04, 0x34, 0xCF, 0xB3 }      \
   }
 
+#define GRUB_PRIxGPT_GUID "%08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x"
+#define GRUB_GPT_GUID_STR_LEN 36
+
 struct grub_gpt_header
 {
   grub_uint8_t magic[8];
@@ -83,5 +86,8 @@ grub_gpt_partition_map_iterate (grub_disk_t disk,
                                grub_partition_iterate_hook_t hook,
                                void *hook_data);
 
+int
+grub_gpt_part_guid_snprint (char *str, grub_size_t n,
+                           const grub_gpt_part_guid_t *guid);
 
 #endif /* ! GRUB_GPT_PARTITION_HEADER */
-- 
2.39.2