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;
#define duprintf(format, args...)
#endif
-enum {
- TABLE,
- TARGET,
- MATCH,
-};
-
-static const char *xt_prefix[NPROTO] = {
+static const char *const xt_prefix[NPROTO] = {
[AF_INET] = "ip",
[AF_INET6] = "ip6",
[NF_ARP] = "arp",
static int match_revfn(int af, const char *name, u8 revision, int *bestp)
{
- struct xt_match *m;
+ const struct xt_match *m;
int have_rev = 0;
list_for_each_entry(m, &xt[af].match, list) {
static int target_revfn(int af, const char *name, u8 revision, int *bestp)
{
- struct xt_target *t;
+ const struct xt_target *t;
int have_rev = 0;
list_for_each_entry(t, &xt[af].target, list) {
}
EXPORT_SYMBOL_GPL(xt_compat_calc_jump);
-int xt_compat_match_offset(struct xt_match *match)
+int xt_compat_match_offset(const struct xt_match *match)
{
u_int16_t csize = match->compatsize ? : match->matchsize;
return XT_ALIGN(match->matchsize) - COMPAT_XT_ALIGN(csize);
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;
+ const struct xt_match *match = m->u.kernel.match;
struct compat_xt_entry_match *cm = (struct compat_xt_entry_match *)m;
int pad, off = xt_compat_match_offset(match);
u_int16_t msize = cm->u.user.match_size;
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;
+ const struct xt_match *match = m->u.kernel.match;
struct compat_xt_entry_match __user *cm = *dstptr;
int off = xt_compat_match_offset(match);
u_int16_t msize = m->u.user.match_size - off;
EXPORT_SYMBOL_GPL(xt_check_target);
#ifdef CONFIG_COMPAT
-int xt_compat_target_offset(struct xt_target *target)
+int xt_compat_target_offset(const struct xt_target *target)
{
u_int16_t csize = target->compatsize ? : target->targetsize;
return XT_ALIGN(target->targetsize) - COMPAT_XT_ALIGN(csize);
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;
+ const struct xt_target *target = t->u.kernel.target;
struct compat_xt_entry_target *ct = (struct compat_xt_entry_target *)t;
int pad, off = xt_compat_target_offset(target);
u_int16_t tsize = ct->u.user.target_size;
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;
+ const struct xt_target *target = t->u.kernel.target;
struct compat_xt_entry_target __user *ct = *dstptr;
int off = xt_compat_target_offset(target);
u_int16_t tsize = t->u.user.target_size - off;
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;
}
EXPORT_SYMBOL_GPL(xt_unregister_table);
#ifdef CONFIG_PROC_FS
-static struct list_head *xt_get_idx(struct list_head *list, struct seq_file *seq, loff_t pos)
+struct xt_names_priv {
+ struct seq_net_private p;
+ int af;
+};
+static void *xt_table_seq_start(struct seq_file *seq, loff_t *pos)
{
- struct list_head *head = list->next;
+ struct xt_names_priv *priv = seq->private;
+ struct net *net = seq_file_net(seq);
+ int af = priv->af;
- if (!head || list_empty(list))
- return NULL;
+ mutex_lock(&xt[af].mutex);
+ return seq_list_start(&net->xt.tables[af], *pos);
+}
- while (pos && (head = head->next)) {
- if (head == list)
- return NULL;
- pos--;
- }
- return pos ? NULL : head;
-}
-
-static struct list_head *type2list(u_int16_t af, u_int16_t type)
-{
- struct list_head *list;
-
- switch (type) {
- case TARGET:
- list = &xt[af].target;
- break;
- case MATCH:
- list = &xt[af].match;
- break;
- case TABLE:
- list = &xt[af].tables;
- break;
- default:
- list = NULL;
- break;
- }
+static void *xt_table_seq_next(struct seq_file *seq, void *v, loff_t *pos)
+{
+ struct xt_names_priv *priv = seq->private;
+ struct net *net = seq_file_net(seq);
+ int af = priv->af;
- return list;
+ return seq_list_next(v, &net->xt.tables[af], pos);
}
-static void *xt_tgt_seq_start(struct seq_file *seq, loff_t *pos)
+static void xt_table_seq_stop(struct seq_file *seq, void *v)
{
- struct proc_dir_entry *pde = (struct proc_dir_entry *) seq->private;
- u_int16_t af = (unsigned long)pde->data & 0xffff;
- u_int16_t type = (unsigned long)pde->data >> 16;
- struct list_head *list;
+ struct xt_names_priv *priv = seq->private;
+ int af = priv->af;
- if (af >= NPROTO)
- return NULL;
+ mutex_unlock(&xt[af].mutex);
+}
- list = type2list(af, type);
- if (!list)
- return NULL;
+static int xt_table_seq_show(struct seq_file *seq, void *v)
+{
+ struct xt_table *table = list_entry(v, struct xt_table, list);
- if (mutex_lock_interruptible(&xt[af].mutex) != 0)
- return NULL;
+ if (strlen(table->name))
+ return seq_printf(seq, "%s\n", table->name);
+ else
+ return 0;
+}
+
+static const struct seq_operations xt_table_seq_ops = {
+ .start = xt_table_seq_start,
+ .next = xt_table_seq_next,
+ .stop = xt_table_seq_stop,
+ .show = xt_table_seq_show,
+};
+
+static int xt_table_open(struct inode *inode, struct file *file)
+{
+ int ret;
+ struct xt_names_priv *priv;
- return xt_get_idx(list, seq, *pos);
+ ret = seq_open_net(inode, file, &xt_table_seq_ops,
+ sizeof(struct xt_names_priv));
+ if (!ret) {
+ priv = ((struct seq_file *)file->private_data)->private;
+ priv->af = (unsigned long)PDE(inode)->data;
+ }
+ return ret;
}
-static void *xt_tgt_seq_next(struct seq_file *seq, void *v, loff_t *pos)
+static const struct file_operations xt_table_ops = {
+ .owner = THIS_MODULE,
+ .open = xt_table_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = seq_release_net,
+};
+
+static void *xt_match_seq_start(struct seq_file *seq, loff_t *pos)
{
- struct proc_dir_entry *pde = seq->private;
- u_int16_t af = (unsigned long)pde->data & 0xffff;
- u_int16_t type = (unsigned long)pde->data >> 16;
- struct list_head *list;
+ struct proc_dir_entry *pde = (struct proc_dir_entry *)seq->private;
+ u_int16_t af = (unsigned long)pde->data;
- if (af >= NPROTO)
- return NULL;
+ mutex_lock(&xt[af].mutex);
+ return seq_list_start(&xt[af].match, *pos);
+}
- list = type2list(af, type);
- if (!list)
- return NULL;
+static void *xt_match_seq_next(struct seq_file *seq, void *v, loff_t *pos)
+{
+ struct proc_dir_entry *pde = (struct proc_dir_entry *)seq->private;
+ u_int16_t af = (unsigned long)pde->data;
- (*pos)++;
- return xt_get_idx(list, seq, *pos);
+ return seq_list_next(v, &xt[af].match, pos);
}
-static void xt_tgt_seq_stop(struct seq_file *seq, void *v)
+static void xt_match_seq_stop(struct seq_file *seq, void *v)
{
struct proc_dir_entry *pde = seq->private;
- u_int16_t af = (unsigned long)pde->data & 0xffff;
+ u_int16_t af = (unsigned long)pde->data;
mutex_unlock(&xt[af].mutex);
}
-static int xt_name_seq_show(struct seq_file *seq, void *v)
+static int xt_match_seq_show(struct seq_file *seq, void *v)
{
- char *name = (char *)v + sizeof(struct list_head);
+ struct xt_match *match = list_entry(v, struct xt_match, list);
- if (strlen(name))
- return seq_printf(seq, "%s\n", name);
+ if (strlen(match->name))
+ return seq_printf(seq, "%s\n", match->name);
else
return 0;
}
-static const struct seq_operations xt_tgt_seq_ops = {
- .start = xt_tgt_seq_start,
- .next = xt_tgt_seq_next,
- .stop = xt_tgt_seq_stop,
- .show = xt_name_seq_show,
+static const struct seq_operations xt_match_seq_ops = {
+ .start = xt_match_seq_start,
+ .next = xt_match_seq_next,
+ .stop = xt_match_seq_stop,
+ .show = xt_match_seq_show,
};
-static int xt_tgt_open(struct inode *inode, struct file *file)
+static int xt_match_open(struct inode *inode, struct file *file)
{
int ret;
- ret = seq_open(file, &xt_tgt_seq_ops);
+ ret = seq_open(file, &xt_match_seq_ops);
if (!ret) {
struct seq_file *seq = file->private_data;
- struct proc_dir_entry *pde = PDE(inode);
- seq->private = pde;
+ seq->private = PDE(inode);
}
+ return ret;
+}
+static const struct file_operations xt_match_ops = {
+ .owner = THIS_MODULE,
+ .open = xt_match_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = seq_release,
+};
+
+static void *xt_target_seq_start(struct seq_file *seq, loff_t *pos)
+{
+ struct proc_dir_entry *pde = (struct proc_dir_entry *)seq->private;
+ u_int16_t af = (unsigned long)pde->data;
+
+ mutex_lock(&xt[af].mutex);
+ return seq_list_start(&xt[af].target, *pos);
+}
+
+static void *xt_target_seq_next(struct seq_file *seq, void *v, loff_t *pos)
+{
+ struct proc_dir_entry *pde = (struct proc_dir_entry *)seq->private;
+ u_int16_t af = (unsigned long)pde->data;
+
+ return seq_list_next(v, &xt[af].target, pos);
+}
+
+static void xt_target_seq_stop(struct seq_file *seq, void *v)
+{
+ struct proc_dir_entry *pde = seq->private;
+ u_int16_t af = (unsigned long)pde->data;
+
+ mutex_unlock(&xt[af].mutex);
+}
+
+static int xt_target_seq_show(struct seq_file *seq, void *v)
+{
+ struct xt_target *target = list_entry(v, struct xt_target, list);
+
+ if (strlen(target->name))
+ return seq_printf(seq, "%s\n", target->name);
+ else
+ return 0;
+}
+
+static const struct seq_operations xt_target_seq_ops = {
+ .start = xt_target_seq_start,
+ .next = xt_target_seq_next,
+ .stop = xt_target_seq_stop,
+ .show = xt_target_seq_show,
+};
+
+static int xt_target_open(struct inode *inode, struct file *file)
+{
+ int ret;
+
+ ret = seq_open(file, &xt_target_seq_ops);
+ if (!ret) {
+ struct seq_file *seq = file->private_data;
+
+ seq->private = PDE(inode);
+ }
return ret;
}
-static const struct file_operations xt_file_ops = {
+static const struct file_operations xt_target_ops = {
.owner = THIS_MODULE,
- .open = xt_tgt_open,
+ .open = xt_target_open,
.read = seq_read,
.llseek = seq_lseek,
.release = seq_release,
#endif /* CONFIG_PROC_FS */
-int xt_proto_init(int af)
+int xt_proto_init(struct net *net, int af)
{
#ifdef CONFIG_PROC_FS
char buf[XT_FUNCTION_MAXNAMELEN];
#ifdef CONFIG_PROC_FS
strlcpy(buf, xt_prefix[af], sizeof(buf));
strlcat(buf, FORMAT_TABLES, sizeof(buf));
- proc = proc_net_fops_create(&init_net, buf, 0440, &xt_file_ops);
+ proc = proc_create_data(buf, 0440, net->proc_net, &xt_table_ops,
+ (void *)(unsigned long)af);
if (!proc)
goto out;
- proc->data = (void *) ((unsigned long) af | (TABLE << 16));
-
strlcpy(buf, xt_prefix[af], sizeof(buf));
strlcat(buf, FORMAT_MATCHES, sizeof(buf));
- proc = proc_net_fops_create(&init_net, buf, 0440, &xt_file_ops);
+ proc = proc_create_data(buf, 0440, net->proc_net, &xt_match_ops,
+ (void *)(unsigned long)af);
if (!proc)
goto out_remove_tables;
- proc->data = (void *) ((unsigned long) af | (MATCH << 16));
strlcpy(buf, xt_prefix[af], sizeof(buf));
strlcat(buf, FORMAT_TARGETS, sizeof(buf));
- proc = proc_net_fops_create(&init_net, buf, 0440, &xt_file_ops);
+ proc = proc_create_data(buf, 0440, net->proc_net, &xt_target_ops,
+ (void *)(unsigned long)af);
if (!proc)
goto out_remove_matches;
- proc->data = (void *) ((unsigned long) af | (TARGET << 16));
#endif
return 0;
out_remove_matches:
strlcpy(buf, xt_prefix[af], sizeof(buf));
strlcat(buf, FORMAT_MATCHES, sizeof(buf));
- proc_net_remove(&init_net, buf);
+ proc_net_remove(net, buf);
out_remove_tables:
strlcpy(buf, xt_prefix[af], sizeof(buf));
strlcat(buf, FORMAT_TABLES, sizeof(buf));
- proc_net_remove(&init_net, buf);
+ proc_net_remove(net, buf);
out:
return -1;
#endif
}
EXPORT_SYMBOL_GPL(xt_proto_init);
-void xt_proto_fini(int af)
+void xt_proto_fini(struct net *net, int af)
{
#ifdef CONFIG_PROC_FS
char buf[XT_FUNCTION_MAXNAMELEN];
strlcpy(buf, xt_prefix[af], sizeof(buf));
strlcat(buf, FORMAT_TABLES, sizeof(buf));
- proc_net_remove(&init_net, buf);
+ proc_net_remove(net, buf);
strlcpy(buf, xt_prefix[af], sizeof(buf));
strlcat(buf, FORMAT_TARGETS, sizeof(buf));
- proc_net_remove(&init_net, buf);
+ proc_net_remove(net, buf);
strlcpy(buf, xt_prefix[af], sizeof(buf));
strlcat(buf, FORMAT_MATCHES, sizeof(buf));
- proc_net_remove(&init_net, buf);
+ proc_net_remove(net, buf);
#endif /*CONFIG_PROC_FS*/
}
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);
}
git.openpandora.org / pandora-kernel.git / blobdiff