dnsmasq/backport-Reduce-code-duplication-reuse-existing-functions.patch
renmingshuai ecda82bdd3 Fix memory leak
(cherry picked from commit 52a514a9b3f7fc6c08f9838d2910018e506186cb)
2023-12-07 09:31:12 +08:00

92 lines
2.4 KiB
Diff

From 10d8b5f001a34ff46b3a72575f3af64b065f8637 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Petr=20Men=C5=A1=C3=ADk?= <pemensik@redhat.com>
Date: Wed, 14 Apr 2021 21:08:31 +0100
Subject: [PATCH] Reduce code duplication, reuse existing functions
dhcp_config_free and dhcp_opt_free already implement the same algorithm.
Reuse them. Adds forgotten hostname cleanup to config free.
Conflict:NA
Reference:https://thekelleys.org.uk/gitweb/?p=dnsmasq.git;a=commit;h=10d8b5f001a34ff46b3a72575f3af64b065f8637
---
src/option.c | 42 ++++++------------------------------------
1 file changed, 6 insertions(+), 36 deletions(-)
diff --git a/src/option.c b/src/option.c
index e8926a4..23cf058 100644
--- a/src/option.c
+++ b/src/option.c
@@ -1067,6 +1067,8 @@ static void dhcp_config_free(struct dhcp_config *config)
if (config->flags & CONFIG_CLID)
free(config->clid);
+ if (config->flags & CONFIG_NAME)
+ free(config->hostname);
#ifdef HAVE_DHCP6
if (config->flags & CONFIG_ADDR6)
@@ -5002,30 +5004,8 @@ static void clear_dynamic_conf(void)
if (configs->flags & CONFIG_BANK)
{
- struct hwaddr_config *mac, *tmp;
- struct dhcp_netid_list *list, *tmplist;
-
- for (mac = configs->hwaddr; mac; mac = tmp)
- {
- tmp = mac->next;
- free(mac);
- }
-
- if (configs->flags & CONFIG_CLID)
- free(configs->clid);
-
- for (list = configs->netid; list; list = tmplist)
- {
- free(list->list);
- tmplist = list->next;
- free(list);
- }
-
- if (configs->flags & CONFIG_NAME)
- free(configs->hostname);
-
- *up = configs->next;
- free(configs);
+ *up = cp;
+ dhcp_config_free(configs);
}
else
up = &configs->next;
@@ -5035,7 +5015,6 @@ static void clear_dynamic_conf(void)
static void clear_dynamic_opt(void)
{
struct dhcp_opt *opts, *cp, **up;
- struct dhcp_netid *id, *next;
for (up = &daemon->dhcp_opts, opts = daemon->dhcp_opts; opts; opts = cp)
{
@@ -5043,17 +5022,8 @@ static void clear_dynamic_opt(void)
if (opts->flags & DHOPT_BANK)
{
- if ((opts->flags & DHOPT_VENDOR))
- free(opts->u.vendor_class);
- free(opts->val);
- for (id = opts->netid; id; id = next)
- {
- next = id->next;
- free(id->net);
- free(id);
- }
- *up = opts->next;
- free(opts);
+ *up = cp;
+ dhcp_opt_free(opts);
}
else
up = &opts->next;
--
2.23.0