1 files changed, 53 insertions, 0 deletions
diff --git a/libc-bottom-half/sources/bind.c b/libc-bottom-half/sources/bind.c
new file mode 100644
index 0000000..6204691
--- /dev/null
+++ b/libc-bottom-half/sources/bind.c
@@ -0,0 +1,53 @@
+#include <errno.h>
+#include <netinet/in.h>
+
+#include <wasi/api.h>
+#include <wasi/descriptor_table.h>
+#include <wasi/sockets_utils.h>
+
+int tcp_bind(tcp_socket_t *socket, const struct sockaddr *addr,
+	     socklen_t addrlen)
+{
+	network_ip_socket_address_t local_address;
+	int parse_err;
+	if (!__wasi_sockets_utils__parse_address(socket->family, addr, addrlen,
+						 &local_address, &parse_err)) {
+		errno = parse_err;
+		return -1;
+	}
+
+	return __wasi_sockets_utils__tcp_bind(socket, &local_address);
+}
+
+int udp_bind(udp_socket_t *socket, const struct sockaddr *addr,
+	     socklen_t addrlen)
+{
+	network_ip_socket_address_t local_address;
+	int parse_err;
+	if (!__wasi_sockets_utils__parse_address(socket->family, addr, addrlen,
+						 &local_address, &parse_err)) {
+		errno = parse_err;
+		return -1;
+	}
+
+	return __wasi_sockets_utils__udp_bind(socket, &local_address);
+}
+
+int bind(int socket, const struct sockaddr *addr, socklen_t addrlen)
+{
+	descriptor_table_entry_t *entry;
+	if (!descriptor_table_get_ref(socket, &entry)) {
+		errno = EBADF;
+		return -1;
+	}
+
+	switch (entry->tag) {
+	case DESCRIPTOR_TABLE_ENTRY_TCP_SOCKET:
+		return tcp_bind(&entry->tcp_socket, addr, addrlen);
+	case DESCRIPTOR_TABLE_ENTRY_UDP_SOCKET:
+		return udp_bind(&entry->udp_socket, addr, addrlen);
+	default:
+		errno = EOPNOTSUPP;
+		return -1;
+	}
+}