dnsmasq/SOURCES/dnsmasq-2.79-server-domain-...

100 lines
2.5 KiB
Diff

From 4c5cbdfb82e668268a5f3713fe119fb077667c8e Mon Sep 17 00:00:00 2001
From: rpm-build <rpm-build>
Date: Mon, 22 Aug 2022 21:59:42 +0200
Subject: [PATCH] Ensure also server_domains_cleanup is called always
Fixes issue in patch dnsmasq-2.79-server-domain-rh1919894.patch.
When /etc/resolv.conf is changed, dnsmasq reloads used servers. But it
does not call cleanup of server domains in this case. It might cause
serv_domain->last_server to become non-null, but pointing released
server. Ensure it is checked before any cleanup_servers() action always
and from all other places, like dbus setting.
Caused unending loop in forward_query function, rhbz#2106361.
---
src/network.c | 49 +++++++++++++++++++++++++------------------------
1 file changed, 25 insertions(+), 24 deletions(-)
diff --git a/src/network.c b/src/network.c
index 4d140bb..96668fb 100644
--- a/src/network.c
+++ b/src/network.c
@@ -1402,10 +1402,35 @@ void mark_servers(int flag)
}
}
+static void server_domains_cleanup(void)
+{
+ struct server_domain *sd, *tmp, **up;
+
+ /* unlink and free anything still marked. */
+ for (up = &daemon->server_domains, sd=*up; sd; sd = tmp)
+ {
+ tmp = sd->next;
+ if (sd->flags & SERV_MARK)
+ {
+ *up = sd->next;
+ if (sd->domain)
+ free(sd->domain);
+ free(sd);
+ }
+ else {
+ up = &sd->next;
+ if (sd->last_server && (sd->last_server->flags & SERV_MARK))
+ sd->last_server = NULL;
+ }
+ }
+}
+
void cleanup_servers(void)
{
struct server *serv, *tmp, **up;
+ server_domains_cleanup();
+
/* unlink and free anything still marked. */
for (serv = daemon->servers, up = &daemon->servers; serv; serv = tmp)
{
@@ -1428,29 +1453,6 @@ void cleanup_servers(void)
#endif
}
-void server_domains_cleanup(void)
-{
- struct server_domain *sd, *tmp, **up;
-
- /* unlink and free anything still marked. */
- for (up = &daemon->server_domains, sd=*up; sd; sd = tmp)
- {
- tmp = sd->next;
- if (sd->flags & SERV_MARK)
- {
- *up = sd->next;
- if (sd->domain)
- free(sd->domain);
- free(sd);
- }
- else {
- up = &sd->next;
- if (sd->last_server && (sd->last_server->flags & SERV_MARK))
- sd->last_server = NULL;
- }
- }
-}
-
void add_update_server(int flags,
union mysockaddr *addr,
union mysockaddr *source_addr,
@@ -1739,7 +1741,6 @@ void check_servers(void)
up = &sfd->next;
}
- server_domains_cleanup();
cleanup_servers();
}
--
2.37.2