util: Add missing O_CLOEXEC for !HAS_GETRANDOM path

It rarely matters, since we usually have getrandom(), but in case we don't
our open() of /dev/random was missing O_CLOEXEC, which can cause clang
warnings.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/util.c b/util.c
index 7c97910..6a39d2d 100644
--- a/util.c
+++ b/util.c
@@ -964,7 +964,7 @@ void raw_random(void *buf, size_t buflen)
 {
 	size_t random_read = 0;
 #ifndef HAS_GETRANDOM
-	int fd = open(DEV_RANDOM, O_RDONLY);
+	int fd = open(DEV_RANDOM, O_RDONLY | O_CLOEXEC);
 
 	if (fd < 0)
 		die_perror("Couldn't open %s", DEV_RANDOM);