+/* For the /proc/sys support */
+struct ctl_table;
+struct nsproxy;
+struct ctl_table_root;
+
+struct ctl_table_set {
+ struct list_head list;
+ struct ctl_table_set *parent;
+ int (*is_seen)(struct ctl_table_set *);
+};
+
+extern void setup_sysctl_set(struct ctl_table_set *p,
+ struct ctl_table_set *parent,
+ int (*is_seen)(struct ctl_table_set *));
+
+struct ctl_table_header;
+
+extern void sysctl_head_get(struct ctl_table_header *);
+extern void sysctl_head_put(struct ctl_table_header *);
+extern int sysctl_is_seen(struct ctl_table_header *);
+extern struct ctl_table_header *sysctl_head_grab(struct ctl_table_header *);
+extern struct ctl_table_header *sysctl_head_next(struct ctl_table_header *prev);
+extern struct ctl_table_header *__sysctl_head_next(struct nsproxy *namespaces,
+ struct ctl_table_header *prev);
+extern void sysctl_head_finish(struct ctl_table_header *prev);
+extern int sysctl_perm(struct ctl_table_root *root,
+ struct ctl_table *table, int op);