From: Felix Fietkau <nbd@nbd.name>
Date: Mon, 20 Nov 2023 22:01:59 +0000 (+0100)
Subject: ring: add missing fread return code check
X-Git-Url: http://git.openwrt.org/?a=commitdiff_plain;h=759d9404034b7da97b3950c806ace7296a0f7a12;p=project%2Fudebug.git

ring: add missing fread return code check

Fixes build issue with glibc

Signed-off-by: Felix Fietkau <nbd@nbd.name>
---

diff --git a/ring.c b/ring.c
index ba75ac5..8a7e27f 100644
--- a/ring.c
+++ b/ring.c
@@ -22,7 +22,8 @@ static uint32_t gen_ring_id(void)
 	if (!urandom && (urandom = fopen("/dev/urandom", "r")) == NULL)
 		return 0;
 
-	fread(&val, sizeof(val), 1, urandom);
+	if (fread(&val, sizeof(val), 1, urandom) != 1)
+		return 0;
 
 	return val;
 }