From c4972d4721b7c8c3e796ad8e8b3c5bfe3ceff5ae Mon Sep 17 00:00:00 2001
From: weizihan <weizihan@xiaomi.com>
Date: Tue, 19 Apr 2022 20:22:59 +0800
Subject: [PATCH] apps: Fix bug by calling getrandom

Signed-off-by: weizihan <weizihan@xiaomi.com>
---
 fsutils/mkgpt/mkgpt.c | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

diff --git a/fsutils/mkgpt/mkgpt.c b/fsutils/mkgpt/mkgpt.c
index 5b2c3d3f5..953b7fdd8 100644
--- a/fsutils/mkgpt/mkgpt.c
+++ b/fsutils/mkgpt/mkgpt.c
@@ -31,6 +31,7 @@
 #include <unistd.h>
 #include <string.h>
 
+#include <sys/random.h>
 #include <sys/stat.h>
 #include <sys/ioctl.h>
 
@@ -128,12 +129,12 @@ static const uint8_t g_partition_type_swap[16] =
 
 static void get_uuid(FAR uint8_t *uuid)
 {
-  int fd;
-  fd = open("/dev/urandom", O_RDONLY);
-  if (fd > 0)
+  /* call getrandom to read  /dev/urandom */
+
+  if (getrandom(uuid, 16, 0) < 0)
     {
-      read(fd, uuid, 16);
-      close(fd);
+      fprintf(stderr, "error read primary partition table\n");
+      return;
     }
 }