#define __DIR_LIST_C

#include <stdlib.h>
#include <errno.h>
#include "afuse.h"
#include "utils.h"
#include "dir_list.h"

void dir_list_add(dir_list_t **dir_list, DIR *dir)
{
	dir_list_t *new_dir;

	new_dir = my_malloc( sizeof(dir_list_t) );
	new_dir->dir = dir;
	new_dir->next = *dir_list;
	new_dir->prev = NULL;

	*dir_list = new_dir;
}

void dir_list_remove(dir_list_t **dir_list, DIR *dir)
{
	dir_list_t *current_dir = *dir_list;

	while(current_dir) {
		if(current_dir->dir == dir) {
			if(current_dir->prev)
				current_dir->prev->next = current_dir->next;
			else
				*dir_list = current_dir->next;
			if(current_dir->next)
				current_dir->next->prev = current_dir->prev;
			free(current_dir);

			return;
		}

		current_dir = current_dir->next;
	}
}

void dir_list_close_all(dir_list_t **dir_list)
{
	while(*dir_list) {
		int retries;
		
		for(retries = 0; retries < CLOSE_MAX_RETRIES &&
		                 closedir((*dir_list)->dir) == -1   &&
		                 errno == EINTR;
		    retries++);
		dir_list_remove(dir_list, (*dir_list)->dir);
	}
}

bool dir_list_empty(dir_list_t *dir_list)
{
	return (dir_list == NULL) ? true : false;
}