v1.13.1

ADDED:
* ispriv, which returns some information useful for determining if
  running with extra permissions, in sudo, etc.

ispriv/funcs_windows.go

@@ -0,0 +1,60 @@
+//go:build windows
+
+package ispriv
+
+import (
+	`golang.org/x/sys/windows`
+)
+
+// IsAdmin returns true if currently running with Administrator privileges.
+func IsAdmin() (admin bool, err error) {
+
+	var sid *windows.SID
+	var tok windows.Token
+
+	if err = windows.AllocateAndInitializeSid(
+		&windows.SECURITY_NT_AUTHORITY,      // identAuth
+		2,                                   // subAuth
+		windows.SECURITY_BUILTIN_DOMAIN_RID, // subAuth0
+		windows.DOMAIN_ALIAS_RID_ADMINS,     // subAuth1
+		0, 0, 0, 0, 0, 0,                    // subAuth2-10
+		&sid, // sid
+	); err != nil {
+		return
+	}
+	defer windows.FreeSid(sid)
+
+	tok = windows.Token(0)
+	if admin, err = tok.IsMember(sid); err != nil {
+		return
+	}
+
+	return
+}
+
+// IsElevated returns true if running in an elevated ("Run as Administrator") context.
+func IsElevated() (elevated bool) {
+
+	var tok windows.Token = windows.Token(0)
+
+	elevated = tok.IsElevated()
+
+	return
+}
+
+/*
+	IsPrivileged indicates that the current security context is running both
+	with Administrator priviliges AND is elevated.
+*/
+func IsPrivileged() (privileged bool, err error) {
+
+	if privileged, err = IsAdmin(); err != nil {
+		return
+	}
+
+	if privileged {
+		privileged = IsElevated()
+	}
+
+	return
+}