+static inline size_t ctf_packet_index_len(uint32_t major, uint32_t minor)
+{
+ if (major == 1) {
+ switch (minor) {
+ case 0:
+ return offsetof(struct ctf_packet_index, stream_id)
+ + member_sizeof(struct ctf_packet_index,
+ stream_id);
+ case 1:
+ return offsetof(struct ctf_packet_index, packet_seq_num)
+ + member_sizeof(struct ctf_packet_index,
+ packet_seq_num);
+ default:
+ abort();
+ }
+ }
+ abort();
+}
+
+static inline uint32_t lttng_to_index_major(uint32_t lttng_major,
+ uint32_t lttng_minor __attribute__((unused)))
+{
+ if (lttng_major == 2) {
+ return 1;
+ }
+ abort();
+}
+
+static inline uint32_t lttng_to_index_minor(uint32_t lttng_major,
+ uint32_t lttng_minor)
+{
+ if (lttng_major == 2) {
+ if (lttng_minor < 8) {
+ return 0;
+ } else {
+ return 1;
+ }
+ }
+ abort();
+}
+
+static inline void ctf_packet_index_file_hdr_init(
+ struct ctf_packet_index_file_hdr *hdr,
+ uint32_t idx_major, uint32_t idx_minor)
+{
+ memset(hdr, 0, sizeof(*hdr));
+ hdr->magic = htobe32(CTF_INDEX_MAGIC);
+ hdr->index_major = htobe32(idx_major);
+ hdr->index_minor = htobe32(idx_minor);
+ hdr->packet_index_len = htobe32(
+ ctf_packet_index_len(idx_major, idx_minor));
+}
+