1 files changed, 80 insertions, 0 deletions
diff --git a/src/net/cgo_unix_cgo.go b/src/net/cgo_unix_cgo.go
new file mode 100644
index 0000000..d11f3e3
--- /dev/null
+++ b/src/net/cgo_unix_cgo.go
@@ -0,0 +1,80 @@
+// Copyright 2022 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+//go:build cgo && !netgo && unix && !darwin
+
+package net
+
+/*
+#define _GNU_SOURCE
+
+#cgo CFLAGS: -fno-stack-protector
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <netdb.h>
+#include <unistd.h>
+#include <string.h>
+#include <stdlib.h>
+
+#ifndef EAI_NODATA
+#define EAI_NODATA -5
+#endif
+
+// If nothing else defined EAI_OVERFLOW, make sure it has a value.
+#ifndef EAI_OVERFLOW
+#define EAI_OVERFLOW -12
+#endif
+*/
+import "C"
+import "unsafe"
+
+const (
+	_C_AF_INET      = C.AF_INET
+	_C_AF_INET6     = C.AF_INET6
+	_C_AF_UNSPEC    = C.AF_UNSPEC
+	_C_EAI_AGAIN    = C.EAI_AGAIN
+	_C_EAI_NODATA   = C.EAI_NODATA
+	_C_EAI_NONAME   = C.EAI_NONAME
+	_C_EAI_OVERFLOW = C.EAI_OVERFLOW
+	_C_EAI_SYSTEM   = C.EAI_SYSTEM
+	_C_IPPROTO_TCP  = C.IPPROTO_TCP
+	_C_IPPROTO_UDP  = C.IPPROTO_UDP
+	_C_SOCK_DGRAM   = C.SOCK_DGRAM
+	_C_SOCK_STREAM  = C.SOCK_STREAM
+)
+
+type (
+	_C_char            = C.char
+	_C_uchar           = C.uchar
+	_C_int             = C.int
+	_C_uint            = C.uint
+	_C_socklen_t       = C.socklen_t
+	_C_struct_addrinfo = C.struct_addrinfo
+	_C_struct_sockaddr = C.struct_sockaddr
+)
+
+func _C_GoString(p *_C_char) string      { return C.GoString(p) }
+func _C_malloc(n uintptr) unsafe.Pointer { return C.malloc(C.size_t(n)) }
+func _C_free(p unsafe.Pointer)           { C.free(p) }
+
+func _C_ai_addr(ai *_C_struct_addrinfo) **_C_struct_sockaddr { return &ai.ai_addr }
+func _C_ai_family(ai *_C_struct_addrinfo) *_C_int            { return &ai.ai_family }
+func _C_ai_flags(ai *_C_struct_addrinfo) *_C_int             { return &ai.ai_flags }
+func _C_ai_next(ai *_C_struct_addrinfo) **_C_struct_addrinfo { return &ai.ai_next }
+func _C_ai_protocol(ai *_C_struct_addrinfo) *_C_int          { return &ai.ai_protocol }
+func _C_ai_socktype(ai *_C_struct_addrinfo) *_C_int          { return &ai.ai_socktype }
+
+func _C_freeaddrinfo(ai *_C_struct_addrinfo) {
+	C.freeaddrinfo(ai)
+}
+
+func _C_gai_strerror(eai _C_int) string {
+	return C.GoString(C.gai_strerror(eai))
+}
+
+func _C_getaddrinfo(hostname, servname *_C_char, hints *_C_struct_addrinfo, res **_C_struct_addrinfo) (int, error) {
+	x, err := C.getaddrinfo(hostname, servname, hints, res)
+	return int(x), err
+}