diff options
Diffstat (limited to 'net/netfilter/x_tables.c')
| -rw-r--r-- | net/netfilter/x_tables.c | 34 |
1 files changed, 26 insertions, 8 deletions
diff --git a/net/netfilter/x_tables.c b/net/netfilter/x_tables.c index b7f8d2ed3cc2..84e58ee501a4 100644 --- a/net/netfilter/x_tables.c +++ b/net/netfilter/x_tables.c @@ -52,7 +52,7 @@ struct xt_af { struct mutex mutex; struct list_head match; struct list_head target; -#ifdef CONFIG_COMPAT +#ifdef CONFIG_NETFILTER_XTABLES_COMPAT struct mutex compat_mutex; struct compat_delta *compat_tab; unsigned int number; /* number of slots in compat_tab[] */ @@ -647,7 +647,7 @@ static bool error_tg_ok(unsigned int usersize, unsigned int kernsize, return usersize == kernsize && strnlen(msg, msglen) < msglen; } -#ifdef CONFIG_COMPAT +#ifdef CONFIG_NETFILTER_XTABLES_COMPAT int xt_compat_add_offset(u_int8_t af, unsigned int offset, int delta) { struct xt_af *xp = &xt[af]; @@ -850,7 +850,7 @@ int xt_compat_check_entry_offsets(const void *base, const char *elems, __alignof__(struct compat_xt_entry_match)); } EXPORT_SYMBOL(xt_compat_check_entry_offsets); -#endif /* CONFIG_COMPAT */ +#endif /* CONFIG_NETFILTER_XTABLES_COMPAT */ /** * xt_check_entry_offsets - validate arp/ip/ip6t_entry @@ -868,7 +868,7 @@ EXPORT_SYMBOL(xt_compat_check_entry_offsets); * match structures are aligned, and that the last structure ends where * the target structure begins. * - * Also see xt_compat_check_entry_offsets for CONFIG_COMPAT version. + * Also see xt_compat_check_entry_offsets for CONFIG_NETFILTER_XTABLES_COMPAT version. * * The arp/ip/ip6t_entry structure @base must have passed following tests: * - it must point to a valid memory location @@ -1059,7 +1059,7 @@ void *xt_copy_counters(sockptr_t arg, unsigned int len, void *mem; u64 size; -#ifdef CONFIG_COMPAT +#ifdef CONFIG_NETFILTER_XTABLES_COMPAT if (in_compat_syscall()) { /* structures only differ in size due to alignment */ struct compat_xt_counters_info compat_tmp; @@ -1106,7 +1106,7 @@ void *xt_copy_counters(sockptr_t arg, unsigned int len, } EXPORT_SYMBOL_GPL(xt_copy_counters); -#ifdef CONFIG_COMPAT +#ifdef CONFIG_NETFILTER_XTABLES_COMPAT int xt_compat_target_offset(const struct xt_target *target) { u_int16_t csize = target->compatsize ? : target->targetsize; @@ -1199,6 +1199,23 @@ void xt_free_table_info(struct xt_table_info *info) } EXPORT_SYMBOL(xt_free_table_info); +struct xt_table *xt_find_table(struct net *net, u8 af, const char *name) +{ + struct xt_pernet *xt_net = net_generic(net, xt_pernet_id); + struct xt_table *t; + + mutex_lock(&xt[af].mutex); + list_for_each_entry(t, &xt_net->tables[af], list) { + if (strcmp(t->name, name) == 0) { + mutex_unlock(&xt[af].mutex); + return t; + } + } + mutex_unlock(&xt[af].mutex); + return NULL; +} +EXPORT_SYMBOL(xt_find_table); + /* Find table by name, grabs mutex & ref. Returns ERR_PTR on error. */ struct xt_table *xt_find_table_lock(struct net *net, u_int8_t af, const char *name) @@ -1276,7 +1293,7 @@ void xt_table_unlock(struct xt_table *table) } EXPORT_SYMBOL_GPL(xt_table_unlock); -#ifdef CONFIG_COMPAT +#ifdef CONFIG_NETFILTER_XTABLES_COMPAT void xt_compat_lock(u_int8_t af) { mutex_lock(&xt[af].compat_mutex); @@ -1481,6 +1498,7 @@ void *xt_unregister_table(struct xt_table *table) mutex_unlock(&xt[table->af].mutex); audit_log_nfcfg(table->name, table->af, private->number, AUDIT_XT_OP_UNREGISTER, GFP_KERNEL); + kfree(table->ops); kfree(table); return private; @@ -1913,7 +1931,7 @@ static int __init xt_init(void) for (i = 0; i < NFPROTO_NUMPROTO; i++) { mutex_init(&xt[i].mutex); -#ifdef CONFIG_COMPAT +#ifdef CONFIG_NETFILTER_XTABLES_COMPAT mutex_init(&xt[i].compat_mutex); xt[i].compat_tab = NULL; #endif |