1 files changed, 38 insertions, 0 deletions
diff --git a/src/net/cgo_unix_cgo_res.go b/src/net/cgo_unix_cgo_res.go
new file mode 100644
index 0000000..37bbc9a
--- /dev/null
+++ b/src/net/cgo_unix_cgo_res.go
@@ -0,0 +1,38 @@
+// 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.
+
+// res_search, for cgo systems where that is thread-safe.
+
+//go:build cgo && !netgo && (linux || openbsd)
+
+package net
+
+/*
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <netdb.h>
+#include <unistd.h>
+#include <string.h>
+#include <arpa/nameser.h>
+#include <resolv.h>
+
+#cgo !android,!openbsd LDFLAGS: -lresolv
+*/
+import "C"
+
+type _C_struct___res_state = struct{}
+
+func _C_res_ninit(state *_C_struct___res_state) error {
+	return nil
+}
+
+func _C_res_nclose(state *_C_struct___res_state) {
+	return
+}
+
+func _C_res_nsearch(state *_C_struct___res_state, dname *_C_char, class, typ int, ans *_C_uchar, anslen int) (int, error) {
+	x, err := C.res_search(dname, C.int(class), C.int(typ), ans, C.int(anslen))
+	return int(x), err
+}