[PATCH] machine_id: Add getter of machine id hashables.

[Christian Melki <christian.melki@t2data.com>]

Add the possibility for reusing the registered
hashables for other functions beside machine id
and the truncated sha1 it offers.

Signed-off-by: Christian Melki <christian.melki@t2data.com>
---
 common/machine_id.c  | 5 +++++
 include/machine_id.h | 7 +++++++
 2 files changed, 12 insertions(+)

diff --git a/common/machine_id.c b/common/machine_id.c
index 8c273b9349..f0b148fb9b 100644
--- a/common/machine_id.c
+++ b/common/machine_id.c
@@ -16,6 +16,11 @@
 static void *__machine_id_hashable;
 static size_t __machine_id_hashable_length;
 
+const void *machine_id_get_hashable(size_t *len)
+{
+	*len = __machine_id_hashable_length;
+	return __machine_id_hashable;
+}
 
 void machine_id_set_hashable(const void *hashable, size_t len)
 {
diff --git a/include/machine_id.h b/include/machine_id.h
index e30bbada1a..9699e7f207 100644
--- a/include/machine_id.h
+++ b/include/machine_id.h
@@ -5,10 +5,17 @@
 
 #if IS_ENABLED(CONFIG_MACHINE_ID)
 
+const void *machine_id_get_hashable(size_t *len);
+
 void machine_id_set_hashable(const void *hashable, size_t len);
 
 #else
 
+static inline const void *machine_id_get_hashable(size_t *len)
+{
+	return NULL;
+}
+
 static inline void machine_id_set_hashable(const void *hashable, size_t len)
 {
 }
-- 
2.34.1