+#include <common/fs-handle.h>
+#include <common/trace-chunk.h>
+
+struct lttng_index_file {
+ struct fs_handle *file;
+ uint32_t major;
+ uint32_t minor;
+ uint32_t element_len;
+ struct lttng_trace_chunk *trace_chunk;
+ struct urcu_ref ref;
+};
+
+/*
+ * create and open have refcount of 1. Use put to decrement the
+ * refcount. Destroys when reaching 0. Use "get" to increment refcount.
+ */
+enum lttng_trace_chunk_status lttng_index_file_create_from_trace_chunk(
+ struct lttng_trace_chunk *chunk,
+ const char *channel_path, const char *stream_name,
+ uint64_t stream_file_size, uint64_t stream_count,
+ uint32_t index_major, uint32_t index_minor,
+ bool unlink_existing_file, struct lttng_index_file **file);
+
+enum lttng_trace_chunk_status lttng_index_file_create_from_trace_chunk_read_only(
+ struct lttng_trace_chunk *chunk,
+ const char *channel_path, const char *stream_name,
+ uint64_t stream_file_size, uint64_t stream_file_index,
+ uint32_t index_major, uint32_t index_minor,
+ bool expect_no_file, struct lttng_index_file **file);
+
+int lttng_index_file_write(const struct lttng_index_file *index_file,
+ const struct ctf_packet_index *element);
+int lttng_index_file_read(const struct lttng_index_file *index_file,
+ struct ctf_packet_index *element);