int consumer_metadata_cache_write(struct lttng_consumer_channel *channel,
unsigned int offset, unsigned int len, uint64_t version,
- char *data);
+ const char *data);
int consumer_metadata_cache_allocate(struct lttng_consumer_channel *channel);
void consumer_metadata_cache_destroy(struct lttng_consumer_channel *channel);
int consumer_metadata_cache_flushed(struct lttng_consumer_channel *channel,