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// SPDX-License-Identifier: ISC
/*
* Copyright (c) 2021 David Lamparter, for NetDEF, Inc.
*/
#ifndef _FRR_ZLOG_5424_H
#define _FRR_ZLOG_5424_H
#include <sys/stat.h>
#include "lib/typesafe.h"
#include "zlog.h"
#include "zlog_targets.h"
#include "qobj.h"
struct event;
struct event_loop;
enum zlog_5424_dst {
/* can be used to disable a target temporarily */
ZLOG_5424_DST_NONE = 0,
ZLOG_5424_DST_FD,
ZLOG_5424_DST_FILE,
ZLOG_5424_DST_FIFO,
ZLOG_5424_DST_UNIX,
#define ZLOG_5424_DST_LAST ZLOG_5424_DST_UNIX
};
enum zlog_5424_format {
ZLOG_FMT_5424 = 0,
ZLOG_FMT_3164,
ZLOG_FMT_LOCAL,
ZLOG_FMT_JOURNALD,
#define ZLOG_FMT_LAST ZLOG_FMT_JOURNALD
};
/* actual RCU'd logging backend */
struct zlt_5424;
struct zlog_cfg_5424 {
struct zlt_5424 *active;
pthread_mutex_t cfg_mtx;
/* general settings for all dsts */
int facility;
int prio_min;
bool kw_version;
bool kw_location;
bool kw_uid;
bool kw_ec;
bool kw_args;
uint32_t ts_flags;
enum zlog_5424_format fmt;
/* destination specifics */
enum zlog_5424_dst dst;
/* pre-opened FD. not the actual fd we log to */
int fd;
/* file, fifo, unix */
bool file_nocreate;
const char *filename;
mode_t file_mode;
/* -1 = no change */
uid_t file_uid;
gid_t file_gid;
/* remaining fields are internally used & updated by the 5424
* code - *not* config. don't set these.
*/
/* sockets only - read handler to reconnect on errors */
struct event_loop *master;
struct event *t_reconnect;
unsigned int reconn_backoff, reconn_backoff_cur, reconn_backoff_max;
int sock_type;
struct sockaddr_storage sa;
socklen_t sa_len;
};
/* these don't do malloc/free to allow using a static global */
extern void zlog_5424_init(struct zlog_cfg_5424 *zcf);
/* keepopen = true => for shutdown, just zap the config, keep logging */
extern void zlog_5424_fini(struct zlog_cfg_5424 *zcf, bool keepopen);
/* apply metadata/config changes */
extern bool zlog_5424_apply_meta(struct zlog_cfg_5424 *zcf);
/* apply changes requiring (re-)opening the destination
*
* also does log cycling/rotate & applies _meta at the same time
*/
extern bool zlog_5424_apply_dst(struct zlog_cfg_5424 *zcf);
/* SIGHUP log rotation */
extern bool zlog_5424_rotate(struct zlog_cfg_5424 *zcf);
extern void zlog_5424_state(struct zlog_cfg_5424 *zcf, size_t *lost_msgs,
int *last_errno, bool *stale_errno,
struct timeval *err_ts);
/* this is the dynamically allocated "variant" */
PREDECL_RBTREE_UNIQ(targets);
struct zlog_cfg_5424_user {
struct targets_item targets_item;
char *name;
struct zlog_cfg_5424 cfg;
char *envvar;
/* non-const, always same as cfg.filename */
char *filename;
/* uid/gid strings to write back out in show config */
char *file_user;
char *file_group;
bool reconf_dst;
bool reconf_meta;
int unix_special;
QOBJ_FIELDS;
};
DECLARE_QOBJ_TYPE(zlog_cfg_5424_user);
extern void log_5424_cmd_init(void);
#endif /* _FRR_ZLOG_5424_H */
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