From: Yu Watanabe <watanabe.yu+github@gmail.com>
Date: Thu, 8 Dec 2022 06:48:25 +0000 (+0900)
Subject: sd-id128: make sd_id128_get_boot() and friend return -ENOMEDIUM
X-Git-Tag: v253-rc1~315^2~3
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=9be90c401e16cf04a9cea0b19fdefa7d0a47f056;p=thirdparty%2Fsystemd.git

sd-id128: make sd_id128_get_boot() and friend return -ENOMEDIUM
---

diff --git a/src/libsystemd/sd-id128/sd-id128.c b/src/libsystemd/sd-id128/sd-id128.c
index a5758e58416..70b1a10c748 100644
--- a/src/libsystemd/sd-id128/sd-id128.c
+++ b/src/libsystemd/sd-id128/sd-id128.c
@@ -148,6 +148,9 @@ _public_ int sd_id128_get_boot(sd_id128_t *ret) {
                 r = id128_read("/proc/sys/kernel/random/boot_id", ID128_FORMAT_UUID, &saved_boot_id);
                 if (r < 0)
                         return r;
+
+                if (sd_id128_is_null(saved_boot_id))
+                        return -ENOMEDIUM;
         }
 
         *ret = saved_boot_id;