--- auth.c.orig	2024-09-04 23:09:59.029709000 +0000
+++ auth.c	2024-09-04 23:13:30.773140000 +0000
@@ -51,7 +51,7 @@
 
 #include <errno.h>
 
-#if defined(HAVE_POLKIT) && defined(SO_PEERCRED)
+#if defined(HAVE_POLKIT) && (defined(SO_PEERCRED) || defined(LOCAL_PEERCRED))
 
 #include <polkit/polkit.h>
 #include <stdbool.h>
@@ -61,7 +61,11 @@
 /* Returns non zero when the client is authorized */
 unsigned IsClientAuthorized(int socket, const char* action, const char* reader)
 {
+#ifdef LOCAL_PEERCRED
+	struct xucred cr;
+#else
 	struct ucred cr;
+#endif
 	socklen_t cr_len;
 	int ret;
 	PolkitSubject *subject;
@@ -77,7 +81,11 @@
 	snprintf(action_name, sizeof(action_name), "org.debian.pcsc-lite.%s", action);
 
 	cr_len = sizeof(cr);
+#ifdef LOCAL_PEERCRED
+	ret = getsockopt(socket, SOL_LOCAL, LOCAL_PEERCRED, &cr, &cr_len);
+#else
 	ret = getsockopt(socket, SOL_SOCKET, SO_PEERCRED, &cr, &cr_len);
+#endif
 	if (ret == -1)
 	{
 #ifndef NO_LOG
@@ -97,7 +105,11 @@
 		return 0;
 	}
 
+#ifdef LOCAL_PEERCRED
+	subject = polkit_unix_process_new_for_owner(cr.cr_pid, 0, cr.cr_uid);
+#else
 	subject = polkit_unix_process_new_for_owner(cr.pid, 0, cr.uid);
+#endif
 	if (subject == NULL)
 	{
 		Log1(PCSC_LOG_CRITICAL, "polkit_unix_process_new_for_owner failed");
@@ -144,7 +156,11 @@
 	{
 		Log4(PCSC_LOG_CRITICAL,
 		     "Process %u (user: %u) is NOT authorized for action: %s",
+#ifdef LOCAL_PEERCRED
+			(unsigned)cr.cr_pid, (unsigned)cr.cr_uid, action);
+#else
 			(unsigned)cr.pid, (unsigned)cr.uid, action);
+#endif
 	}
 
 	if (result)