Add support for custom backend metadatabackend_metadata_adder

A backend may have the need to add custom metadata to the
encoded data/parity fragments, in addition to the
liberasurecode "fragment metadata headers".  This patch
gives the ability to a EC backend writer to specify a
"metadata adder" that is taken into account when allocating
output data/parity fragment buffers.

Signed-off-by: Tushar Gohad <tushar.gohad@intel.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/include/erasurecode/erasurecode_helpers.h b/include/erasurecode/erasurecode_helpers.h
index e8fddaa..46dc669 100644
--- a/include/erasurecode/erasurecode_helpers.h
+++ b/include/erasurecode/erasurecode_helpers.h
@@ -118,7 +118,7 @@ void init_fragment_header(char *buf)
 void *alloc_zeroed_buffer(int size);
 void *alloc_and_set_buffer(int size, int value);
 void *check_and_free_buffer(void *buf);
-char *alloc_fragment_buffer(int size);
+char *alloc_fragment_buffer(ec_backend_t instance, int size);
 int free_fragment_buffer(char *buf);
 void *get_aligned_buffer16(int size);
 int get_aligned_data_size(ec_backend_t instance, int data_len);