--- usr/sbin/pkcsslotd/mutex.c.orig	2022-04-25 11:04:51 UTC
+++ usr/sbin/pkcsslotd/mutex.c
@@ -16,10 +16,24 @@
 #include <sys/stat.h>
 #include <grp.h>
 #include <string.h>
+#include <fcntl.h>
 
 #include "log.h"
 #include "slotmgr.h"
 
+#ifndef	LOCK_SH
+#define	LOCK_SH 1       /* shared lock */
+#endif
+#ifndef	LOCK_EX
+#define	LOCK_EX 2       /* exclusive lock */
+#endif
+#ifndef	LOCK_NB
+#define	LOCK_NB 4       /* don't block when locking */
+#endif
+#ifndef	LOCK_UN
+#define	LOCK_UN 8       /* unlock */
+#endif
+
 static int xplfd = -1;
 
 int CreateXProcLock(void)
@@ -37,7 +51,7 @@ int CreateXProcLock(void)
                 goto error;
             }
 
-            grp = getgrnam("pkcs11");
+            grp = getgrnam(PKCS11GROUP);
             if (grp != NULL) {
                 if (fchown(xplfd, -1, grp->gr_gid) == -1) {
                     DbgLog(DL0, "%s:fchown(%s):%s\n",