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-rw-r--r--src/network/networkd-address.c17
-rw-r--r--src/network/networkd-fdb.c25
-rw-r--r--src/network/networkd-network.h4
-rw-r--r--src/network/networkd-route.c15
4 files changed, 47 insertions, 14 deletions
diff --git a/src/network/networkd-address.c b/src/network/networkd-address.c
index 367c340e08..4cdb500bd6 100644
--- a/src/network/networkd-address.c
+++ b/src/network/networkd-address.c
@@ -32,6 +32,8 @@
#include "utf8.h"
#include "util.h"
+#define STATIC_ADDRESSES_PER_NETWORK_MAX 1024U
+
int address_new(Address **ret) {
_cleanup_address_free_ Address *address = NULL;
@@ -54,6 +56,9 @@ int address_new_static(Network *network, unsigned section, Address **ret) {
_cleanup_address_free_ Address *address = NULL;
int r;
+ assert(network);
+ assert(ret);
+
if (section) {
address = hashmap_get(network->addresses_by_section, UINT_TO_PTR(section));
if (address) {
@@ -64,18 +69,21 @@ int address_new_static(Network *network, unsigned section, Address **ret) {
}
}
+ if (network->n_static_addresses >= STATIC_ADDRESSES_PER_NETWORK_MAX)
+ return -E2BIG;
+
r = address_new(&address);
if (r < 0)
return r;
if (section) {
address->section = section;
- hashmap_put(network->addresses_by_section,
- UINT_TO_PTR(address->section), address);
+ hashmap_put(network->addresses_by_section, UINT_TO_PTR(address->section), address);
}
address->network = network;
LIST_APPEND(addresses, network->static_addresses, address);
+ network->n_static_addresses++;
*ret = address;
address = NULL;
@@ -89,10 +97,11 @@ void address_free(Address *address) {
if (address->network) {
LIST_REMOVE(addresses, address->network->static_addresses, address);
+ assert(address->network->n_static_addresses > 0);
+ address->network->n_static_addresses--;
if (address->section)
- hashmap_remove(address->network->addresses_by_section,
- UINT_TO_PTR(address->section));
+ hashmap_remove(address->network->addresses_by_section, UINT_TO_PTR(address->section));
}
if (address->link) {
diff --git a/src/network/networkd-fdb.c b/src/network/networkd-fdb.c
index 241f486211..4d51fa41e2 100644
--- a/src/network/networkd-fdb.c
+++ b/src/network/networkd-fdb.c
@@ -27,14 +27,19 @@
#include "networkd.h"
#include "util.h"
+#define STATIC_FDB_ENTRIES_PER_NETWORK_MAX 1024U
+
/* create a new FDB entry or get an existing one. */
-int fdb_entry_new_static(Network *const network,
- const unsigned section,
- FdbEntry **ret) {
+int fdb_entry_new_static(
+ Network *network,
+ const unsigned section,
+ FdbEntry **ret) {
+
_cleanup_fdbentry_free_ FdbEntry *fdb_entry = NULL;
struct ether_addr *mac_addr = NULL;
assert(network);
+ assert(ret);
/* search entry in hashmap first. */
if (section) {
@@ -47,6 +52,9 @@ int fdb_entry_new_static(Network *const network,
}
}
+ if (network->n_static_fdb_entries >= STATIC_FDB_ENTRIES_PER_NETWORK_MAX)
+ return -E2BIG;
+
/* allocate space for MAC address. */
mac_addr = new0(struct ether_addr, 1);
if (!mac_addr)
@@ -54,7 +62,6 @@ int fdb_entry_new_static(Network *const network,
/* allocate space for and FDB entry. */
fdb_entry = new0(FdbEntry, 1);
-
if (!fdb_entry) {
/* free previously allocated space for mac_addr. */
free(mac_addr);
@@ -66,6 +73,7 @@ int fdb_entry_new_static(Network *const network,
fdb_entry->mac_addr = mac_addr;
LIST_PREPEND(static_fdb_entries, network->static_fdb_entries, fdb_entry);
+ network->n_static_fdb_entries++;
if (section) {
fdb_entry->section = section;
@@ -145,12 +153,13 @@ void fdb_entry_free(FdbEntry *fdb_entry) {
return;
if (fdb_entry->network) {
- LIST_REMOVE(static_fdb_entries, fdb_entry->network->static_fdb_entries,
- fdb_entry);
+ LIST_REMOVE(static_fdb_entries, fdb_entry->network->static_fdb_entries, fdb_entry);
+
+ assert(fdb_entry->network->n_static_fdb_entries > 0);
+ fdb_entry->network->n_static_fdb_entries--;
if (fdb_entry->section)
- hashmap_remove(fdb_entry->network->fdb_entries_by_section,
- UINT_TO_PTR(fdb_entry->section));
+ hashmap_remove(fdb_entry->network->fdb_entries_by_section, UINT_TO_PTR(fdb_entry->section));
}
free(fdb_entry->mac_addr);
diff --git a/src/network/networkd-network.h b/src/network/networkd-network.h
index 91099161ce..248a427e8d 100644
--- a/src/network/networkd-network.h
+++ b/src/network/networkd-network.h
@@ -169,6 +169,10 @@ struct Network {
LIST_HEAD(Route, static_routes);
LIST_HEAD(FdbEntry, static_fdb_entries);
+ unsigned n_static_addresses;
+ unsigned n_static_routes;
+ unsigned n_static_fdb_entries;
+
Hashmap *addresses_by_section;
Hashmap *routes_by_section;
Hashmap *fdb_entries_by_section;
diff --git a/src/network/networkd-route.c b/src/network/networkd-route.c
index f001de772a..1b480385c6 100644
--- a/src/network/networkd-route.c
+++ b/src/network/networkd-route.c
@@ -28,6 +28,8 @@
#include "string-util.h"
#include "util.h"
+#define STATIC_ROUTES_PER_NETWORK_MAX 1024U
+
int route_new(Route **ret) {
_cleanup_route_free_ Route *route = NULL;
@@ -51,6 +53,9 @@ int route_new_static(Network *network, unsigned section, Route **ret) {
_cleanup_route_free_ Route *route = NULL;
int r;
+ assert(network);
+ assert(ret);
+
if (section) {
route = hashmap_get(network->routes_by_section, UINT_TO_PTR(section));
if (route) {
@@ -61,6 +66,9 @@ int route_new_static(Network *network, unsigned section, Route **ret) {
}
}
+ if (network->n_static_routes >= STATIC_ROUTES_PER_NETWORK_MAX)
+ return -E2BIG;
+
r = route_new(&route);
if (r < 0)
return r;
@@ -77,6 +85,7 @@ int route_new_static(Network *network, unsigned section, Route **ret) {
route->network = network;
LIST_PREPEND(routes, network->static_routes, route);
+ network->n_static_routes++;
*ret = route;
route = NULL;
@@ -91,9 +100,11 @@ void route_free(Route *route) {
if (route->network) {
LIST_REMOVE(routes, route->network->static_routes, route);
+ assert(route->network->n_static_routes > 0);
+ route->network->n_static_routes--;
+
if (route->section)
- hashmap_remove(route->network->routes_by_section,
- UINT_TO_PTR(route->section));
+ hashmap_remove(route->network->routes_by_section, UINT_TO_PTR(route->section));
}
if (route->link) {
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-11-05 16:22:10 +0000