hesiod_getservbyname, hesiod_free_servent - Hesiod functions for
retrieving service information
struct servent *hesiod_getservbyname(void *context,
const char *name, const char *proto)
void hesiod_free_servent(void *context, struct servent *serv)
cc file.c -lhesiod
This family of functions allows you to retrieve service to port
mappings using Hesiod. To perform lookups, you need an initialized
Hesiod context; see hesiod(3) for details. Information is returned in
the same format as by getservbyname. It is the caller’s responsibility
to call hesiod_free_servent with the returned service entry to free the
resources used by the service entry.
Hesiod queries for service information are made using the ‘‘service’’
Hesiod type, using the service name as the Hesiod name. The
corresponding records should be space-separated lists of strings giving
the service name, protocol, port number (in decimal), and zero or more
aliases for the service. There may be multiple records per service
name; hesiod_getservbyname will pick the first one whose protocol
On failure, hesiod_getservbyname returns NULL and sets the global
variable errno to indicate the error.
hesiod_getservbyname may fail for any of the reasons the routine
hesiod_resolve may fail.
30 November 1996 HESIOD(3)