From ff4a72c159e06c15a4573b9a4b40f6dc55544538 Mon Sep 17 00:00:00 2001
From: Peter Holm <pho@FreeBSD.org>
Date: Tue, 11 Jun 2024 15:52:34 +0200
Subject: [PATCH] stress2: Replace random() with arc4random()

---
 tools/test/stress2/misc/nfsrename.sh | 4 ++--
 tools/test/stress2/misc/umountf2.sh  | 3 ++-
 2 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/tools/test/stress2/misc/nfsrename.sh b/tools/test/stress2/misc/nfsrename.sh
index b6513fba155..864c64aed8a 100755
--- a/tools/test/stress2/misc/nfsrename.sh
+++ b/tools/test/stress2/misc/nfsrename.sh
@@ -137,7 +137,7 @@ write_file(void)
 		unlink(path);
 	}
 
-	fprintf(fp, "blah blah blah garbage %ld\n", random());
+	fprintf(fp, "blah blah blah garbage %ld\n", (long)arc4random());
 	fclose(fp);
 	if (rename(path, filename) < 0) {
 		warn("rename");
@@ -150,7 +150,7 @@ random_sleep(int base, int slop)
 {
 	long val;
 
-	val = random() % slop;
+	val = arc4random() % slop;
 	usleep(base + val);
 }
 
diff --git a/tools/test/stress2/misc/umountf2.sh b/tools/test/stress2/misc/umountf2.sh
index 5018a804c40..cd5b53616f9 100755
--- a/tools/test/stress2/misc/umountf2.sh
+++ b/tools/test/stress2/misc/umountf2.sh
@@ -886,11 +886,12 @@ test(void)
 {
 	unsigned long	offset;
 	unsigned long	size = maxoplen;
-	unsigned long	rv = random();
+	unsigned long	rv;
 	unsigned long	op = rv % (3 + !lite + mapped_writes);
 
 	/* turn off the map read if necessary */
 
+	arc4random_buf(&rv, sizeof(rv));
 	if (op == 2 && !mapped_reads)
 	    op = 0;