From: Yu Watanabe <watanabe.yu+github@gmail.com>
Date: Sun, 23 Jan 2022 21:06:55 +0000 (+0900)
Subject: dns-domain: re-introduce dns_name_is_empty()
X-Git-Tag: v250.4~64
X-Git-Url: http://git-history.diyao.me/?a=commitdiff_plain;h=df08c12062dfd9903edec371598412a47a3055e0;p=systemd%2F.git

dns-domain: re-introduce dns_name_is_empty()

(cherry picked from commit 7bdf41983044268b4bc2f9d34462db7f89ba284a)
---

diff --git a/src/shared/dns-domain.h b/src/shared/dns-domain.h
index c25fcaacc2..24bf00bd58 100644
--- a/src/shared/dns-domain.h
+++ b/src/shared/dns-domain.h
@@ -60,6 +60,10 @@ static inline int dns_name_is_valid_ldh(const char *s) {
         return 1;
 }
 
+static inline bool dns_name_is_empty(const char *s) {
+        return isempty(s) || streq(s, ".");
+}
+
 void dns_name_hash_func(const char *s, struct siphash *state);
 int dns_name_compare_func(const char *a, const char *b);
 extern const struct hash_ops dns_name_hash_ops;