From 1f5bc12893eefb0e3a247c2266c94a6f7f2b3364 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=D0=BD=D0=B0=D0=B1?= <nabijaczleweli@nabijaczleweli.xyz>
Date: Tue, 3 May 2022 16:58:40 +0200
Subject: [PATCH] ztest: O_CLOEXEC ztest_fd_rand
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Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz>
Closes #13411
---
 cmd/ztest.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/cmd/ztest.c b/cmd/ztest.c
index 1b5459f8e4..ca05cf2651 100644
--- a/cmd/ztest.c
+++ b/cmd/ztest.c
@@ -7866,7 +7866,6 @@ exec_child(char *cmd, char *libpath, boolean_t ignorekill, int *statusp)
 	if (pid == 0) {	/* child */
 		char fd_data_str[12];
 
-		(void) close(ztest_fd_rand);
 		VERIFY3S(11, >=,
 		    snprintf(fd_data_str, 12, "%d", ztest_fd_data));
 		VERIFY0(setenv("ZTEST_FD_DATA", fd_data_str, 1));
@@ -8013,7 +8012,7 @@ main(int argc, char **argv)
 	 * ztest from needlessly depleting the system entropy pool.
 	 */
 	random_path = "/dev/urandom";
-	ztest_fd_rand = open(random_path, O_RDONLY);
+	ztest_fd_rand = open(random_path, O_RDONLY | O_CLOEXEC);
 	ASSERT3S(ztest_fd_rand, >=, 0);
 
 	if (!fd_data_str) {