From 286fdb4a383338173dbb31a355778b51f45f7c1c Mon Sep 17 00:00:00 2001
From: "Andrey A. Chernov" <ache@FreeBSD.org>
Date: Sun, 30 Mar 1997 23:33:29 +0000
Subject: [PATCH] Use srandomdev() now Add range checking for invalid
 denominator values

---
 games/random/random.c | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/games/random/random.c b/games/random/random.c
index acb882ba6b2b..4d17b5355862 100644
--- a/games/random/random.c
+++ b/games/random/random.c
@@ -62,7 +62,6 @@ main(argc, argv)
 	char *argv[];
 {
 	extern int optind;
-	time_t now;
 	double denom;
 	int ch, random_exit, selected, unbuffer_output;
 	char *ep;
@@ -94,16 +93,18 @@ main(argc, argv)
 		denom = strtod(*argv, &ep);
 		if (errno == ERANGE)
 			err(1, "%s", *argv);
-		if (denom == 0 || *ep != '\0')
+		if (denom <= 0 || *ep != '\0')
 			errx(1, "denominator is not valid.");
+		if (random_exit && denom > 255)
+			errx(1, "denominator must be <= 255 for random exit.");
 		break;
 	default:
 		usage();
 		/* NOTREACHED */
 	}
 
-	(void)time(&now);
-	srandom((unsigned long)(now ^ getpid()));
+	if (srandomdev() < 0)
+		srandom(time(NULL) ^ getpid());
 
 	/* Compute a random exit status between 0 and denom - 1. */
 	if (random_exit)