net: add wrapSyscallError

Signed-off-by: Roman Volosatovs <[email protected]>

Author: rvolosatovs

src/net/error_posix.go

@@ -0,0 +1,24 @@
+// The following is copied and adapted from Go 1.18 official implementation.
+
+// Copyright 2017 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 aix || darwin || dragonfly || freebsd || (js && wasm) || linux || netbsd || openbsd || solaris || windows || wasi
+// +build aix darwin dragonfly freebsd js,wasm linux netbsd openbsd solaris windows wasi
+
+package net
+
+import (
+	"os"
+	"syscall"
+)
+
+// wrapSyscallError takes an error and a syscall name. If the error is
+// a syscall.Errno, it wraps it in a os.SyscallError using the syscall name.
+func wrapSyscallError(name string, err error) error {
+	if _, ok := err.(syscall.Errno); ok {
+		err = os.NewSyscallError(name, err)
+	}
+	return err
+}