===================================================================
RCS file: /cvs2/brogue-ce/src/platform/main.c,v
retrieving revision 1.1
retrieving revision 1.2
diff -u -p -r1.1 -r1.2
--- brogue-ce/src/platform/main.c	2021/05/27 20:31:43	1.1
+++ brogue-ce/src/platform/main.c	2021/05/27 20:44:14	1.2
@@ -1,7 +1,11 @@
 #include <math.h>
 #include <limits.h>
 #include "platform.h"
+#if defined(__OpenBSD__)
+#include <unistd.h> // For pledge() and unveil()
+#endif
 
+
 // Expanding a macro as a string constant requires two levels of macros
 #define _str(x)  #x
 #define STRINGIFY(x)  _str(x)
@@ -84,6 +88,31 @@ int main(int argc, char *argv[])
 
     int i;
     for (i = 1; i < argc; i++) {
+#if defined(__OpenBSD__)
+	if (strcmp(argv[i], "--box") == 0) {
+	    if (i + 1 < argc) {
+	        if ( unveil("/usr","r")==-1 ) {
+		    perror("Unveil failure. Aborting.");
+			exit (1);
+		}
+		if ( unveil(argv[i + 1],"rwc")==-1 ) {
+        	    perror("Unveil failure. Aborting.");
+        		exit(1);
+		}
+		if ( chdir(argv[i+1])==-1 ) {
+			perror("Could not change directory.");
+			exit(1);
+		}
+		if ( pledge("stdio rpath wpath cpath fattr flock "
+       			"getpw id tty proc", NULL )==-1 ) {
+        	    perror("Pledge failure. Aborting.");
+        		exit (1);
+		}
+		i++;
+		continue;
+	    }
+	}
+#endif // OpenBSD
         if (strcmp(argv[i], "--scores") == 0) {
             // just dump the scores and quit!
             dumpScores();