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-rw-r--r--resolv/netdb.h44
1 files changed, 44 insertions, 0 deletions
diff --git a/resolv/netdb.h b/resolv/netdb.h
index 954085f97d..38622e87fe 100644
--- a/resolv/netdb.h
+++ b/resolv/netdb.h
@@ -357,6 +357,50 @@ extern int getnetgrent_r __P ((char **__hostp, char **__userp,
char *__buffer, int __buflen));
#endif
+
+/* Extension from POSIX.1g. */
+#ifdef __USE_POSIX
+/* Structure to contain information about address of a service provider. */
+struct addrinfo
+{
+ int ai_flags; /* Input flags. */
+ int ai_family; /* Protocol family for socket. */
+ int ai_socktype; /* Socket type. */
+ int ai_protocol; /* Protocol for socket. */
+ int ai_addrlen; /* Length of socket address. */
+ struct sockaddr *ai_addr; /* Socket address for socket. */
+ char *ai_canonname; /* Canonical name for service location. */
+ struct addrinfo *ai_next; /* Pointer to next in list. */
+};
+
+/* Possible values for `ai_flags' field in `addrinfo' structure. */
+#define AI_PASSIVE 1 /* Socket address is intended for `bind'. */
+#define AI_CANONNAME 2 /* Request for canonical name. */
+
+/* Error values for `getaddrinfo' function. */
+#define EAI_BADFLAGS -1 /* Invalid value for `ai_flags' field. */
+#define EAI_NONAME -2 /* NAME or SERVICE is unknown. */
+#define EAI_AGAIN -3 /* Temporary failure in name resolution. */
+#define EAI_FAIL -4 /* Non-recoverable failure in name res. */
+#define EAI_NODATA -5 /* No address associated with NAME. */
+#define EAI_FAMILY -6 /* `ai_family' not supported. */
+#define EAI_SOCKTYPE -7 /* `ai_socktype' not supported. */
+#define EAI_SERVICE -8 /* SERVICE not supported for `ai_socktype'. */
+#define EAI_ADDRFAMILY -9 /* Address family for NAME not supported. */
+#define EAI_MEMORY -10 /* Memory allocation failure. */
+#define EAI_SYSTEM -11 /* System error returned in `errno'. */
+
+
+/* Translate name of a service location and/or a service name to set of
+ socket addresses. */
+extern int getaddrinfo __P ((__const char *__name, __const char *__service,
+ __const struct addrinfo *__req,
+ struct addrinfo **__pai));
+
+/* Free `addrinfo' structure AI including associated storage. */
+extern void freeaddrinfo __P ((struct addrinfo *__ai));
+#endif /* POSIX */
+
__END_DECLS
#endif /* netdb.h */