MT#61625 add getsockname abstraction

Change-Id: Ib89e235c3b8ea5a1038d09dfd8a7895d5753401c

lib/socket.c

@@ -27,6 +27,7 @@ static bool __ip_bind(socket_t *s, unsigned int, const sockaddr_t *);
 static bool __ip_connect(socket_t *s, const endpoint_t *);
 static bool __ip_listen(socket_t *s, int backlog);
 static bool __ip_accept(socket_t *s, socket_t *new_sock);
+static bool __ip_getsockname(socket_t *s);
 static bool __ip_timestamping(socket_t *s);
 static bool __ip4_pktinfo(socket_t *s);
 static bool __ip6_pktinfo(socket_t *s);
@@ -87,6 +88,7 @@ static struct socket_family __socket_families[__SF_LAST] = {
 		.connect		= __ip_connect,
 		.listen			= __ip_listen,
 		.accept			= __ip_accept,
+		.getsockname		= __ip_getsockname,
 		.timestamping		= __ip_timestamping,
 		.pktinfo		= __ip4_pktinfo,
 		.recvfrom		= __ip_recvfrom,
@@ -122,6 +124,7 @@ static struct socket_family __socket_families[__SF_LAST] = {
 		.connect		= __ip_connect,
 		.listen			= __ip_listen,
 		.accept			= __ip_accept,
+		.getsockname		= __ip_getsockname,
 		.timestamping		= __ip_timestamping,
 		.pktinfo		= __ip6_pktinfo,
 		.recvfrom		= __ip_recvfrom,
@@ -313,6 +316,15 @@ static bool __ip_accept(socket_t *s, socket_t *newsock) {
 
 	return true;
 }
+static bool __ip_getsockname(socket_t *s) {
+	struct sockaddr_storage sin;
+	socklen_t sinlen;
+	int ret = getsockname(s->fd, (struct sockaddr *) &sin, &sinlen);
+	if (ret != 0)
+		return false;
+	s->family->sockaddr2endpoint(&s->local, &sin);
+	return true;
+}
 INLINE ssize_t __ip_recvfrom_options(socket_t *s, void *buf, size_t len, endpoint_t *ep, struct timeval *tv,
 		sockaddr_t *to, bool (*parse)(struct cmsghdr *, sockaddr_t *))
 {

lib/socket.h

@@ -73,6 +73,7 @@ struct socket_family {
 	bool				(*connect)(socket_t *, const endpoint_t *);
 	bool				(*listen)(socket_t *, int);
 	bool				(*accept)(socket_t *, socket_t *);
+	bool				(*getsockname)(socket_t *);
 	bool				(*timestamping)(socket_t *);
 	bool				(*pktinfo)(socket_t *);
 	ssize_t				(*recvfrom)(socket_t *, void *, size_t, endpoint_t *);
@@ -188,6 +189,7 @@ INLINE bool is_addr_unspecified(const sockaddr_t *a) {
 #define socket_error(s) (s)->family->error((s))
 #define socket_timestamping(s) (s)->family->timestamping((s))
 #define socket_pktinfo(s) (s)->family->pktinfo((s))
+#define socket_getsockname(s) (s)->family->getsockname((s))
 INLINE ssize_t socket_sendiov(socket_t *s, const struct iovec *v, unsigned int len, const endpoint_t *dst,
 		const sockaddr_t *src)
 {