struct mutex mutex;
struct list_head match;
struct list_head target;
- struct list_head tables;
#ifdef CONFIG_COMPAT
struct mutex compat_mutex;
struct compat_delta *compat_offsets;
EXPORT_SYMBOL_GPL(xt_compat_match_offset);
int xt_compat_match_from_user(struct xt_entry_match *m, void **dstptr,
- int *size)
+ unsigned int *size)
{
struct xt_match *match = m->u.kernel.match;
struct compat_xt_entry_match *cm = (struct compat_xt_entry_match *)m;
EXPORT_SYMBOL_GPL(xt_compat_match_from_user);
int xt_compat_match_to_user(struct xt_entry_match *m, void __user **dstptr,
- int *size)
+ unsigned int *size)
{
struct xt_match *match = m->u.kernel.match;
struct compat_xt_entry_match __user *cm = *dstptr;
EXPORT_SYMBOL_GPL(xt_compat_target_offset);
void xt_compat_target_from_user(struct xt_entry_target *t, void **dstptr,
- int *size)
+ unsigned int *size)
{
struct xt_target *target = t->u.kernel.target;
struct compat_xt_entry_target *ct = (struct compat_xt_entry_target *)t;
EXPORT_SYMBOL_GPL(xt_compat_target_from_user);
int xt_compat_target_to_user(struct xt_entry_target *t, void __user **dstptr,
- int *size)
+ unsigned int *size)
{
struct xt_target *target = t->u.kernel.target;
struct compat_xt_entry_target __user *ct = *dstptr;
EXPORT_SYMBOL(xt_free_table_info);
/* Find table by name, grabs mutex & ref. Returns ERR_PTR() on error. */
-struct xt_table *xt_find_table_lock(int af, const char *name)
+struct xt_table *xt_find_table_lock(struct net *net, int af, const char *name)
{
struct xt_table *t;
if (mutex_lock_interruptible(&xt[af].mutex) != 0)
return ERR_PTR(-EINTR);
- list_for_each_entry(t, &xt[af].tables, list)
+ list_for_each_entry(t, &net->xt.tables[af], list)
if (strcmp(t->name, name) == 0 && try_module_get(t->me))
return t;
mutex_unlock(&xt[af].mutex);
}
EXPORT_SYMBOL_GPL(xt_replace_table);
-int xt_register_table(struct xt_table *table,
- struct xt_table_info *bootstrap,
- struct xt_table_info *newinfo)
+struct xt_table *xt_register_table(struct net *net, struct xt_table *table,
+ struct xt_table_info *bootstrap,
+ struct xt_table_info *newinfo)
{
int ret;
struct xt_table_info *private;
struct xt_table *t;
+ /* Don't add one object to multiple lists. */
+ table = kmemdup(table, sizeof(struct xt_table), GFP_KERNEL);
+ if (!table) {
+ ret = -ENOMEM;
+ goto out;
+ }
+
ret = mutex_lock_interruptible(&xt[table->af].mutex);
if (ret != 0)
- return ret;
+ goto out_free;
/* Don't autoload: we'd eat our tail... */
- list_for_each_entry(t, &xt[table->af].tables, list) {
+ list_for_each_entry(t, &net->xt.tables[table->af], list) {
if (strcmp(t->name, table->name) == 0) {
ret = -EEXIST;
goto unlock;
/* save number of initial entries */
private->initial_entries = private->number;
- list_add(&table->list, &xt[table->af].tables);
+ list_add(&table->list, &net->xt.tables[table->af]);
+ mutex_unlock(&xt[table->af].mutex);
+ return table;
- ret = 0;
unlock:
mutex_unlock(&xt[table->af].mutex);
- return ret;
+out_free:
+ kfree(table);
+out:
+ return ERR_PTR(ret);
}
EXPORT_SYMBOL_GPL(xt_register_table);
private = table->private;
list_del(&table->list);
mutex_unlock(&xt[table->af].mutex);
+ kfree(table);
return private;
}
list = &xt[af].match;
break;
case TABLE:
- list = &xt[af].tables;
+ list = &init_net.xt.tables[af];
break;
default:
list = NULL;
}
EXPORT_SYMBOL_GPL(xt_proto_fini);
+static int __net_init xt_net_init(struct net *net)
+{
+ int i;
+
+ for (i = 0; i < NPROTO; i++)
+ INIT_LIST_HEAD(&net->xt.tables[i]);
+ return 0;
+}
+
+static struct pernet_operations xt_net_ops = {
+ .init = xt_net_init,
+};
static int __init xt_init(void)
{
- int i;
+ int i, rv;
xt = kmalloc(sizeof(struct xt_af) * NPROTO, GFP_KERNEL);
if (!xt)
#endif
INIT_LIST_HEAD(&xt[i].target);
INIT_LIST_HEAD(&xt[i].match);
- INIT_LIST_HEAD(&xt[i].tables);
}
- return 0;
+ rv = register_pernet_subsys(&xt_net_ops);
+ if (rv < 0)
+ kfree(xt);
+ return rv;
}
static void __exit xt_fini(void)
{
+ unregister_pernet_subsys(&xt_net_ops);
kfree(xt);
}