From 5d0a7a1cff3e9f1a2f55a6d6330de4a2d17ab291 Mon Sep 17 00:00:00 2001
From: Michal Sojka <sojkam1@fel.cvut.cz>
Date: Wed, 13 May 2009 02:14:32 +0200
Subject: [PATCH] Added fres_container_copy()

---
 fres/contract/fres_container.c | 30 ++++++++++++++++++++++++++++++
 fres/contract/fres_container.h |  3 +++
 2 files changed, 33 insertions(+)

diff --git a/fres/contract/fres_container.c b/fres/contract/fres_container.c
index 8fa60b9..a067c41 100644
--- a/fres/contract/fres_container.c
+++ b/fres/contract/fres_container.c
@@ -728,3 +728,33 @@ int fres_container_merge(struct fres_container *dest,
 	}
 	return 0;
 }
+
+/** 
+ * Copy blocks from a container into another one. Blocks present in
+ * both @a src and @a dest are replaced in @a dest.
+ * 
+ * @param dest Destination of copy operation
+ * @param src Source of copy operation
+ * 
+ * @return Zero on success, non-zero error core on error.
+ */
+int fres_container_copy(struct fres_container *dest,
+			const struct fres_container *src)
+{
+	enum fres_block_type type;
+	int ret;
+	
+	for (type=0; type<FRES_NUM_BLOCKS; type++) {
+		const struct fres_block *sb = &src->blocks[type];
+		struct fres_block *db = &dest->blocks[type];
+		
+		if (sb->state != FRES_BLOCK_EMPTY) { 
+			fres_container_del_block(dest, type);
+			ret = fres_block_duplicate(db, sb, type);
+			if (ret) {
+				return ret;
+			}
+		}
+	}
+	return 0;
+}
diff --git a/fres/contract/fres_container.h b/fres/contract/fres_container.h
index 924ff57..dabc877 100644
--- a/fres/contract/fres_container.h
+++ b/fres/contract/fres_container.h
@@ -187,6 +187,9 @@ fres_container_get_num_blocks(const struct fres_container *c);
 int fres_container_merge(struct fres_container *dest,
 			 const struct fres_container *src);
 
+int fres_container_copy(struct fres_container *dest,
+			const struct fres_container *src);
+
 #ifdef __cplusplus
 } /* extern "C"*/
 #endif
-- 
2.39.2