This family of functions allows you to perform lookups of Hesiod information, which is stored as text records in the Domain Name Service. To perform lookups, you must first initialize a context, an opaque object which stores information used internally by the library between calls. The hesiod_init function initializes a context, storing a pointer to the context in the location pointed to by the context argument. The hesiod_end function frees the resources used by a context.
The hesiod_resolve function is the primary interface to the library. If successful, it returns a list of one or more strings giving the records matching name and type. The last element of the list is followed by a NULL pointer. It is the callers responsibility to call hesiod_free_list to free the resources used by the returned list.
The hesiod_to_bind function converts name and type into the DNS name used by hesiod_resolve. It is the callers responsibility to free the returned string using free.
.Rv -std hesiod_init On failure, hesiod_resolve and hesiod_to_bind return NULL and set the global variable errno to indicate the error.