Rename frag_adder_size

This patch renames following variables and functions:

- frag_adder_size -> frag_backend_metadata_size
- set_fragment_adder_size() -> set_fragment_backend_metadata_size()
- get_fragment_adder_size() -> get_fragment_backend_metadata_size()

5 files changed, 16 insertions, 14 deletions

diff --git a/README.md b/README.md
index 0ced36d..0fd1575 100644
--- a/README.md
+++ b/README.md
@@ -278,7 +278,7 @@ fragment_metadata
 {

     uint32_t    idx;                /* 4 */

     uint32_t    size;               /* 4 (raw data bytes size of each fragment used for encode/fragment_to_string) */

-    uint32_t    frag_adder_size;    /* 4 (extra metadata_adder bytes size of backend specification) */
+    uint32_t    frag_backend_metadata_size;    /* 4 (extra metadata bytes size of backend specification) */
     uint64_t    orig_data_size;     /* 8 */

     uint8_t     chksum_type;        /* 1 */

     uint32_t    chksum[LIBERASURECODE_MAX_CHECKSUM_LEN]; /* 16 */

@@ -349,7 +349,8 @@ int liberasurecode_get_minimum_encode_size(int desc);
  *        from liberasurecode_instance_create()
  * @param data_len - original data length in bytes
  *
- * @return fragment size - sizeof(fragment_header) + size + frag_adder_size
+ * @return fragment size - sizeof(fragment_header) + size
+ *                          + frag_backend_metadata_size
  */
 int liberasurecode_get_fragment_size(int desc, int data_len);
 

diff --git a/include/erasurecode/erasurecode.h b/include/erasurecode/erasurecode.h
index 7f78b55..4604c2a 100644
--- a/include/erasurecode/erasurecode.h
+++ b/include/erasurecode/erasurecode.h
@@ -247,7 +247,7 @@ fragment_metadata
 {
     uint32_t    idx;                /* 4 */
     uint32_t    size;               /* 4 */
-    uint32_t    frag_adder_size;    /* 4 */
+    uint32_t    frag_backend_metadata_size;    /* 4 */
     uint64_t    orig_data_size;     /* 8 */
     uint8_t     chksum_type;        /* 1 */
     uint32_t    chksum[LIBERASURECODE_MAX_CHECKSUM_LEN]; /* 32 */
@@ -336,7 +336,8 @@ int liberasurecode_get_minimum_encode_size(int desc);
  *        from liberasurecode_instance_create()
  * @param data_len - original data length in bytes
  *
- * @return fragment size - sizeof(fragment_header) + size + frag_adder_size
+ * @return fragment size - sizeof(fragment_header) + size
+ *                         + frag_backend_metadata_size
  */
 int liberasurecode_get_fragment_size(int desc, int data_len);
 
diff --git a/include/erasurecode/erasurecode_helpers.h b/include/erasurecode/erasurecode_helpers.h
index f7eefd7..33b26bd 100644
--- a/include/erasurecode/erasurecode_helpers.h
+++ b/include/erasurecode/erasurecode_helpers.h
@@ -135,8 +135,8 @@ int set_fragment_idx(char *buf, int idx);
 int get_fragment_idx(char *buf);
 int set_fragment_payload_size(char *buf, int size);
 int get_fragment_payload_size(char *buf);
-int set_fragment_adder_size(char *buf, int size);
-int get_fragment_adder_size(char *buf);
+int set_fragment_backend_metadata_size(char *buf, int size);
+int get_fragment_backend_metadata_size(char *buf);
 int get_fragment_buffer_size(char *buf);
 int set_orig_data_size(char *buf, int orig_data_size);
 int get_orig_data_size(char *buf);
diff --git a/src/erasurecode_helpers.c b/src/erasurecode_helpers.c
index 05bc838..522766e 100644
--- a/src/erasurecode_helpers.c
+++ b/src/erasurecode_helpers.c
@@ -324,32 +324,32 @@ int get_fragment_payload_size(char *buf)
     return header->meta.size;
 }
 
-int set_fragment_adder_size(char *buf, int size)
+int set_fragment_backend_metadata_size(char *buf, int size)
 {
     fragment_header_t *header = (fragment_header_t *) buf;
 
     assert(NULL != header);
     if (header->magic != LIBERASURECODE_FRAG_HEADER_MAGIC) {
-        log_error("Invalid fragment header (set adder size)!");
+        log_error("Invalid fragment header (set fragment backend metadata size)!");
         return -1;
     }
 
-    header->meta.frag_adder_size = size;
+    header->meta.frag_backend_metadata_size = size;
 
     return 0;
 }
 
-int get_fragment_adder_size(char *buf)
+int get_fragment_backend_metadata_size(char *buf)
 {
     fragment_header_t *header = (fragment_header_t *) buf;
 
     assert(NULL != header);
     if (header->magic != LIBERASURECODE_FRAG_HEADER_MAGIC) {
-        log_error("Invalid fragment header (get adder size)!");
+        log_error("Invalid fragment header (get fragment backend metadata size)!");
         return -1;
     }
 
-    return header->meta.frag_adder_size;
+    return header->meta.frag_backend_metadata_size;
 }
 
 int get_fragment_buffer_size(char *buf)
@@ -362,7 +362,7 @@ int get_fragment_buffer_size(char *buf)
         return -1;
     }
 
-    return header->meta.size + header->meta.frag_adder_size;
+    return header->meta.size + header->meta.frag_backend_metadata_size;
 }
 
 int set_orig_data_size(char *buf, int orig_data_size)
diff --git a/src/erasurecode_postprocessing.c b/src/erasurecode_postprocessing.c
index 435325e..b1627f7 100644
--- a/src/erasurecode_postprocessing.c
+++ b/src/erasurecode_postprocessing.c
@@ -41,7 +41,7 @@ void add_fragment_metadata(ec_backend_t be, char *fragment,
     set_fragment_payload_size(fragment, blocksize);
     set_backend_id(fragment, be->common.id);
     set_backend_version(fragment, be->common.ec_backend_version);
-    set_fragment_adder_size(fragment, be->common.metadata_adder);
+    set_fragment_backend_metadata_size(fragment, be->common.metadata_adder);
 
     if (add_chksum) {
         set_checksum(ct, fragment, blocksize);