#ifndef fooutilshfoo
#define fooutilshfoo

#include <sys/types.h>
#include <dirent.h>
#include <systemd/sd-bus.h>
#include <stdbool.h>
#include <stdlib.h>

struct list_head {
	struct list_head *next;
	struct list_head *prev;
};

#define LIST_HEAD_INIT(name) { &(name), &(name) }

#define LIST_HEAD(name) struct list_head name = LIST_HEAD_INIT(name)

static inline void list_init(struct list_head *list)
{
	list->next = list;
	list->prev = list;
}

static inline void list_del(struct list_head *list)
{
	list->next->prev = list->prev;
	list->prev->next = list->next;
}

static inline void list_add(struct list_head *new, struct list_head *list)
{
	list->next->prev = new;
	new->next = list->next;
	new->prev = list;
	list->next = new;
}

static inline void list_replace(struct list_head *old, struct list_head *new)
{
	old->prev->next = new;
	old->next->prev = new;
	new->next = old->next;
	new->prev = old->prev;
	old->next = old->prev = NULL;
}

static inline bool list_empty(struct list_head *list)
{
	return list->next == list;
}

#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))

#define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER)

#define container_of(ptr, type, member) ({				\
	const typeof( ((type *)0)->member ) *__mptr = (ptr);		\
	(type *)( (char *)__mptr - offsetof(type,member) );})

#define list_entry(ptr, type, member)					\
	container_of(ptr, type, member)

#define list_first_entry(ptr, type, member)				\
	list_entry((ptr)->next, type, member)

#define list_next_entry(pos, member)					\
	list_entry((pos)->member.next, typeof(*(pos)), member)

#define list_for_each(pos, head)					\
	for (pos = (head)->next; pos != (head); pos = pos->next)

#define list_for_each_entry(pos, head, member)				\
	for (pos = list_first_entry(head, typeof(*pos), member);	\
	     &pos->member != (head);					\
	     pos = list_next_entry(pos, member))

#define list_for_each_entry_safe(pos, n, head, member)			\
	for (pos = list_entry((head)->next, typeof(*pos), member),	\
	     n = list_entry(pos->member.next, typeof(*pos), member);	\
	     &pos->member != (head);					\
	     pos = n, n = list_entry(n->member.next, typeof(*n), member))

static inline void* zmalloc(size_t size)
{
	return calloc(1, size);
}

#define _cleanup_(x) __attribute__((cleanup(x)))

#define DEFINE_TRIVIAL_CLEANUP_FUNC(type, func)				\
	static inline void func##p(type *p) {				\
		if (*p)							\
			func(*p);					\
	}								\
	struct __useless_struct_to_allow_trailing_semicolon__

static inline unsigned
strv_length(char **strv)
{
	unsigned len;

	for (len = 0; strv && *strv; strv++)
		len++;

	return len;
}

static inline void strv_free(char **l) {
	char **k;
	if (l) {
		for (k = l; *k; k++)
			free(k);
		free(l);
	}
}
DEFINE_TRIVIAL_CLEANUP_FUNC(char **, strv_free);
#define _cleanup_strv_free_ _cleanup_(strv_freep)

static inline void freep(void *p) {
	free(*(void**) p);
}
#define _cleanup_free_ _cleanup_(freep)

DEFINE_TRIVIAL_CLEANUP_FUNC(int, close);
#define _cleanup_close_ _cleanup_(closep)

DEFINE_TRIVIAL_CLEANUP_FUNC(FILE *, fclose);
#define _cleanup_fclose_ _cleanup_(fclosep)

DEFINE_TRIVIAL_CLEANUP_FUNC(DIR *, closedir);
#define _cleanup_closedir_ _cleanup_(closedirp)

#define _cleanup_bus_flush_close_unref_ _cleanup_(sd_bus_flush_close_unrefp)

#define _cleanup_bus_slot_unref_ _cleanup_(sd_bus_slot_unrefp)

#define _cleanup_bus_message_unref_ _cleanup_(sd_bus_message_unrefp)

#define _cleanup_event_source_unref_ _cleanup_(sd_event_source_unrefp)

#endif