CentOS 7.0 - man page for hesiod_getservbyname (centos section 3)
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hesiod_getservbyname, hesiod_free_servent - Hesiod functions for retrieving service infor-
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_get-
servbyname will pick the first one whose protocol matches proto.
On failure, hesiod_getservbyname returns NULL and sets the global variable errno to indi-
cate the error.
hesiod_getservbyname may fail for any of the reasons the routine hesiod_resolve may fail.
30 November 1996 HESIOD(3)
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