diff --git i/graphics/wayland/files/patch-src_wayland-server.c w/graphics/wayland/files/patch-src_wayland-server.c
index c2fff92d5a3a..a9660df96e95 100644
--- i/graphics/wayland/files/patch-src_wayland-server.c
+++ w/graphics/wayland/files/patch-src_wayland-server.c
@@ -1,96 +1,106 @@
 --- src/wayland-server.c.orig	2020-02-11 23:46:03 UTC
 +++ src/wayland-server.c
 @@ -25,6 +25,8 @@
  
  #define _GNU_SOURCE
  
 +#include "../config.h"
 +
  #include <stdbool.h>
  #include <stdlib.h>
  #include <stdint.h>
 @@ -44,6 +46,11 @@
  #include <sys/file.h>
  #include <sys/stat.h>
  
 +#ifdef HAVE_SYS_UCRED_H
 +#include <sys/types.h>
 +#include <sys/ucred.h>
 +#endif
 +
  #include "wayland-util.h"
  #include "wayland-private.h"
  #include "wayland-server-private.h"
 @@ -79,7 +86,13 @@ struct wl_client {
  	struct wl_list link;
  	struct wl_map objects;
  	struct wl_priv_signal destroy_signal;
 +#ifdef HAVE_SYS_UCRED_H
 +	/* FreeBSD */
 +	struct xucred xucred;
 +#else
 +	/* Linux */
  	struct ucred ucred;
 +#endif
  	int error;
  	struct wl_priv_signal resource_created_signal;
  };
-@@ -315,7 +328,13 @@ wl_resource_post_error(struct wl_resource *resource,
+@@ -315,7 +328,17 @@ wl_resource_post_error(struct wl_resource *resource,
  static void
  destroy_client_with_error(struct wl_client *client, const char *reason)
  {
 +#ifdef HAVE_SYS_UCRED_H
 +	/* FreeBSD */
++#ifdef cr_pid 
++	wl_log("%s (pid %u)\n", reason, client->xucred.cr_pid);
++#else
 +	wl_log("%s\n", reason);
++#endif
 +#else
 +	/* Linux */
  	wl_log("%s (pid %u)\n", reason, client->ucred.pid);
 +#endif
  	wl_client_destroy(client);
  }
  
-@@ -529,10 +548,20 @@ wl_client_create(struct wl_display *display, int fd)
+@@ -529,10 +552,20 @@ wl_client_create(struct wl_display *display, int fd)
  	if (!client->source)
  		goto err_client;
  
 +#if defined(SO_PEERCRED)
 +	/* Linux */
  	len = sizeof client->ucred;
  	if (getsockopt(fd, SOL_SOCKET, SO_PEERCRED,
  		       &client->ucred, &len) < 0)
  		goto err_source;
 +#elif defined(LOCAL_PEERCRED)
 +	/* FreeBSD */
 +	len = sizeof client->xucred;
-+	if (getsockopt(fd, SOL_SOCKET, LOCAL_PEERCRED,
++	if (getsockopt(fd, 0, LOCAL_PEERCRED,
 +		       &client->xucred, &len) < 0 ||
 +		       client->xucred.cr_version != XUCRED_VERSION)
 +		goto err_source;
 +#endif
  
  	client->connection = wl_connection_create(fd);
  	if (client->connection == NULL)
-@@ -586,12 +615,23 @@ WL_EXPORT void
+@@ -586,12 +619,29 @@ WL_EXPORT void
  wl_client_get_credentials(struct wl_client *client,
  			  pid_t *pid, uid_t *uid, gid_t *gid)
  {
 +#ifdef HAVE_SYS_UCRED_H
-+	/* FreeBSD */
++	/* FreeBSD
++	 * PID available since 2019: https://reviews.freebsd.org/rS348419
++	 * conveniently, cr_pid is a macro */
  	if (pid)
-+		*pid = 0; /* FIXME: not defined on FreeBSD */
++#ifdef cr_pid 
++		*pid = client->xucred.cr_pid;
++#else
++		*pid = 0;
++#endif
 +	if (uid)
 +		*uid = client->xucred.cr_uid;
 +	if (gid)
 +		*gid = client->xucred.cr_gid;
 +#else
 +	/* Linux */
 +	if (pid)
  		*pid = client->ucred.pid;
  	if (uid)
  		*uid = client->ucred.uid;
  	if (gid)
  		*gid = client->ucred.gid;
 +#endif
  }
  
  /** Get the file descriptor for the client