From: Lennart Poettering <lennart@poettering.net>
Date: Fri, 8 Sep 2017 15:34:11 +0000 (+0200)
Subject: efivars: don't crash when somebody wants to remove an efi variable
X-Git-Tag: v235~135^2
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=refs%2Fpull%2F6780%2Fhead;p=thirdparty%2Fsystemd.git

efivars: don't crash when somebody wants to remove an efi variable

This corrects b3c908b4a230c5cca0dcdd7e94d02ec54a298abf by allowing a
NULL value again for variable deletion.

Fixes: #6753
---

diff --git a/src/shared/efivars.c b/src/shared/efivars.c
index 8229e6b1834..2503346610e 100644
--- a/src/shared/efivars.c
+++ b/src/shared/efivars.c
@@ -269,7 +269,7 @@ int efi_set_variable(
         _cleanup_close_ int fd = -1;
 
         assert(name);
-        assert(value);
+        assert(value || size == 0);
 
         if (asprintf(&p,
                      "/sys/firmware/efi/efivars/%s-%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x",