diff --git a/isolate/isolate.h b/isolate/isolate.h
new file mode 100644
--- /dev/null
+++ b/isolate/isolate.h
@@ -0,0 +1,86 @@
+/*
+ *	Process Isolator
+ *
+ *	(c) 2012-2017 Martin Mares <mj@ucw.cz>
+ *	(c) 2012-2014 Bernard Blackham <bernard@blackham.com.au>
+ */
+
+#include <stdarg.h>
+#include <stdint.h>
+#include <sys/types.h>
+
+#define NONRET __attribute__((noreturn))
+#define UNUSED __attribute__((unused))
+#define ARRAY_SIZE(a) (int)(sizeof(a)/sizeof(a[0]))
+
+/* isolate.c */
+
+void die(char *msg, ...) NONRET;
+void NONRET __attribute__((format(printf,1,2))) err(char *msg, ...);
+void __attribute__((format(printf,1,2))) msg(char *msg, ...);
+
+extern int pass_environ;
+extern int verbose;
+extern int block_quota;
+extern int inode_quota;
+extern int cg_enable;
+extern int cg_memory_limit;
+extern int cg_timing;
+
+extern int box_id;
+extern uid_t box_uid, orig_uid;
+extern gid_t box_gid, orig_gid;
+
+/* util.c */
+
+void *xmalloc(size_t size);
+char *xstrdup(char *str);
+int dir_exists(char *path);
+void rmtree(char *path);
+void make_dir(char *path);
+void chowntree(char *path, uid_t uid, gid_t gid);
+void close_all_fds(void);
+
+void meta_open(const char *name);
+void meta_close(void);
+void __attribute__((format(printf,1,2))) meta_printf(const char *fmt, ...);
+
+/* rules.c */
+
+int set_env_action(char *a0);
+char **setup_environment(void);
+
+void init_dir_rules(void);
+int set_dir_action(char *arg);
+void apply_dir_rules(int with_defaults);
+
+void set_quota(void);
+
+/* cg.c */
+
+void cg_init(void);
+void cg_prepare(void);
+void cg_enter(void);
+int cg_get_run_time_ms(void);
+void cg_stats(void);
+void cg_remove(void);
+
+/* config.c */
+
+extern char *cf_box_root;
+extern char *cf_cg_root;
+extern char *cf_cg_parent;
+extern int cf_first_uid;
+extern int cf_first_gid;
+extern int cf_num_boxes;
+
+struct cf_per_box {
+  struct cf_per_box *next;
+  int box_id;
+  char *cpus;
+  char *mems;
+};
+
+void cf_parse(void);
+struct cf_per_box *cf_per_box(int box_id);
+struct cf_per_box *cf_current_box(void);