/*
* Soft: Keepalived is a failover program for the LVS project
* <www.linuxvirtualserver.org>. It monitor & manipulate
* a loadbalanced server pool using multi-layer checks.
*
* Part: track_file.c include file.
*
* Author: Alexandre Cassen, <acassen@linux-vs.org>
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU General Public License for more details.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*
* Copyright (C) 2001-2020 Alexandre Cassen, <acassen@gmail.com>
*/
#ifndef _TRACK_FILE_H
#define _TRACK_FILE_H
/* global includes */
#include <stdbool.h>
#include <stdio.h>
/* local includes */
#include "list_head.h"
#ifdef _WITH_VRRP_
#include "vrrp.h"
#endif
#include "tracker.h"
/* external file we read to track local processes */
typedef void (*obj_dump_func_t) (FILE *, const void *);
typedef struct _tracked_file {
const char *fname; /* File name */
const char *file_path; /* Path to file */
const char *file_part; /* Pointer to start of filename without directories */
int weight; /* Default weight */
bool weight_reverse; /* which direction is the weight applied */
int wd; /* Watch descriptor */
list_head_t tracking_obj; /* tracking_obj_t - for vrrp instances/real servers tracking this file */
obj_dump_func_t tracking_obj_dump; /* Dump helper for tracking_obj list */
int last_status; /* Last status returned by file. Used to report changes */
bool reloaded; /* Set if this track_file existing in previous config */
/* linked list member */
list_head_t e_list;
} tracked_file_t;
/* Tracked file structure definition */
typedef struct _tracked_file_monitor {
tracked_file_t *file; /* track file pointer, cannot be NULL */
int weight; /* Multiplier for file value */
bool weight_reverse; /* which direction is the weight applied */
/* linked list member */
list_head_t e_list;
} tracked_file_monitor_t;
extern void dump_track_file_monitor_list(FILE *, const list_head_t *);
extern void free_track_file_monitor(tracked_file_monitor_t *);
extern void free_track_file_monitor_list(list_head_t *);
extern tracked_file_t * __attribute__ ((pure)) find_tracked_file_by_name(const char *, list_head_t *);
extern void vrrp_alloc_track_file(const char *, list_head_t *, list_head_t *, const vector_t *);
extern void add_track_file_keywords(bool active);
extern void free_tracking_obj_list(list_head_t *);
extern void dump_tracking_obj_list(FILE *fp, const list_head_t *, obj_dump_func_t);
extern void free_track_file_list(list_head_t *);
extern void dump_track_file_list(FILE *, const list_head_t *);
extern void add_obj_to_track_file(void *, tracked_file_monitor_t *, const char *, obj_dump_func_t);
extern void process_update_checker_track_file_status(const tracked_file_t *, int, const tracking_obj_t *);
extern void update_track_file_status(tracked_file_t *, int);
extern void init_track_files(list_head_t *);
extern void stop_track_files(void);
#ifdef THREAD_DUMP
extern void register_track_file_inotify_addresses(void);
#endif
#endif