Validate record on lookup if its checksum is requested

abudnik · May 19, 2016 · e70c2e4 · e70c2e4
1 parent 7be0b64
commit e70c2e4
Showing 1 changed file with 12 additions and 1 deletion.
diff --git a/example/eblob_backend.c b/example/eblob_backend.c
@@ -760,7 +760,7 @@ static int blob_file_info(struct eblob_backend_config *c, void *state, struct dn
 	struct eblob_write_control wc;
 	struct dnet_ext_list elist;
 	static const size_t ehdr_size = sizeof(struct dnet_ext_list_hdr);
-	uint64_t offset, size;
+	uint64_t offset = 0, size = 0, record_offset = 0;
 	int fd, err;
 
 	dnet_ext_list_init(&elist);
@@ -796,6 +796,7 @@ static int blob_file_info(struct eblob_backend_config *c, void *state, struct dn
 		/* Take into an account extended header's len */
 		size -= ehdr_size;
 		offset += ehdr_size;
+		record_offset += sizeof(struct dnet_ext_list_hdr);
 	}
 
 	if (size == 0) {
@@ -805,6 +806,16 @@ static int blob_file_info(struct eblob_backend_config *c, void *state, struct dn
 		goto err_out_exit;
 	}
 
+	/* Validate record's data if its checksum is requested */
+	if (cmd->flags & DNET_FLAGS_CHECKSUM) {
+		wc.offset = record_offset;
+		wc.size = size;
+		err = eblob_verify_checksum(b, &key, &wc);
+		if (err) {
+			goto err_out_exit;
+		}
+	}
+
 	err = dnet_send_file_info_ts(state, cmd, fd, offset, size, &elist.timestamp, wc.flags);
 
 err_out_exit: