Add new API to get current partition

Change-Id: I29f146cd093294511642e029deed55f8703bed28
Signed-off-by: SangYoun Kwak <sy.kwak@samsung.com>

3 files changed, 28 insertions, 2 deletions

diff --git a/include/backend/hal-board-interface.h b/include/backend/hal-board-interface.h
index 2294cf6..b73f47d 100644
--- a/include/backend/hal-board-interface.h
+++ b/include/backend/hal-board-interface.h
@@ -32,6 +32,7 @@ typedef struct _hal_backend_board_funcs {
 	int (*get_boot_mode)(char *buffer, int len);
 	int (*get_boot_reason)(char *buffer, int len);
 
+	int (*get_current_partition)(char *partition_ab);
 	int (*switch_partition)(char partition_ab);
 	int (*set_partition_ab_cloned)(void);
 	int (*clear_partition_ab_cloned)(void);
diff --git a/include/hal-board.h b/include/hal-board.h
index 7f70fc9..f1dfe22 100644
--- a/include/hal-board.h
+++ b/include/hal-board.h
@@ -94,9 +94,18 @@ int hal_device_board_get_boot_reason(char *buffer, int len);// not in use
 
 
 /**
- * @brief Switch partition to partition_ab ('a' or 'b')
+ * @brief Get partition_ab ('a' or 'b')
  *
- * @param[in] partition_ab Partition name to switch to ('a' or 'b')
+ * @param[in] partition_ab Current partition name ('a' or 'b')
+ *
+ * @return 0 on success, otherwise a negative error value
+ */
+int hal_device_board_get_current_partition(char *partition_ab);
+
+/**
+ * @brief Switch partition to partition_ab ('a' or 'b') or toggle partition if partition_ab is '\0'
+ *
+ * @param[in] partition_ab Partition name to switch to ('a' or 'b') or '\0'(toggle)
  *
  * @return 0 on success, otherwise a negative error value
  */
diff --git a/src/board.c b/src/board.c
index 60c8bf2..4affda1 100644
--- a/src/board.c
+++ b/src/board.c
@@ -155,6 +155,22 @@ int hal_device_board_get_boot_reason(char *buffer, int len)
 	return hal_board_funcs->get_boot_reason(buffer, len);
 }
 
+int hal_device_board_get_current_partition(char *partition_ab)
+{
+	int ret;
+
+	if (!hal_board_funcs && !hal_initialized) {
+		if ((ret = hal_device_board_get_backend()) < 0)
+			return ret;
+	}
+
+	if (!hal_board_funcs ||
+	    !hal_board_funcs->get_current_partition)
+		return -ENODEV;
+
+	return hal_board_funcs->get_current_partition(partition_ab);
+}
+
 int hal_device_board_switch_partition(char partition_ab)
 {
 	int ret;