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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* libfrr overall management functions
*
* Copyright (C) 2016 David Lamparter for NetDEF, Inc.
*/
#ifndef _ZEBRA_FRR_H
#define _ZEBRA_FRR_H
#include "typesafe.h"
#include "sigevent.h"
#include "privs.h"
#include "frrevent.h"
#include "log.h"
#include "getopt.h"
#include "module.h"
#include "hook.h"
#include "northbound.h"
#ifdef __cplusplus
extern "C" {
#endif
/* The following options disable specific command line options that
* are not applicable for a particular daemon.
*/
#define FRR_NO_PRIVSEP (1 << 0)
#define FRR_NO_TCPVTY (1 << 1)
#define FRR_LIMITED_CLI (1 << 2)
#define FRR_NO_SPLIT_CONFIG (1 << 3)
#define FRR_NO_PID (1 << 4)
#define FRR_NO_CFG_PID_DRY (FRR_NO_PID | FRR_NO_SPLIT_CONFIG)
#define FRR_NO_ZCLIENT (1 << 5)
/* If FRR_DETACH_LATER is used, the daemon will keep its parent running
* until frr_detach() is called. Normally "somedaemon -d" returns once the
* main event loop is reached in the daemon; use this for extra startup bits.
*
* Does nothing if -d isn't used.
*/
#define FRR_DETACH_LATER (1 << 6)
/* If FRR_MANUAL_VTY_START is used, frr_run() will not automatically start
* listening on for vty connection (either TCP or Unix socket based). The daemon
* is responsible for calling frr_vty_serv() itself.
*/
#define FRR_MANUAL_VTY_START (1 << 7)
PREDECL_DLIST(log_args);
struct log_arg {
struct log_args_item itm;
char target[0];
};
DECLARE_DLIST(log_args, struct log_arg, itm);
enum frr_cli_mode {
FRR_CLI_CLASSIC = 0,
FRR_CLI_TRANSACTIONAL,
};
struct frr_daemon_info {
unsigned flags;
const char *progname;
const char *name;
const char *logname;
unsigned short instance;
struct frrmod_runtime *module;
char *vty_addr;
int vty_port;
char *vty_sock_path;
bool dryrun;
bool daemon_mode;
bool terminal;
enum frr_cli_mode cli_mode;
struct event *read_in;
const char *config_file;
const char *backup_config_file;
const char *pid_file;
#ifdef HAVE_SQLITE3
const char *db_file;
#endif
const char *vty_path;
const char *module_path;
const char *script_path;
const char *pathspace;
bool zpathspace;
struct log_args_head early_logging[1];
const char *early_loglevel;
const char *proghelp;
void (*printhelp)(FILE *target);
const char *copyright;
char startinfo[128];
struct frr_signal_t *signals;
size_t n_signals;
struct zebra_privs_t *privs;
const struct frr_yang_module_info *const *yang_modules;
size_t n_yang_modules;
bool log_always;
/* Optional upper limit on the number of fds used in select/poll */
uint32_t limit_fds;
};
/* execname is the daemon's executable (and pidfile and configfile) name,
* i.e. "zebra" or "bgpd"
* constname is the daemons source-level name, primarily for the logging ID,
* i.e. "ZEBRA" or "BGP"
*
* note that this macro is also a latch-on point for other changes (e.g.
* upcoming module support) that need to place some per-daemon things. Each
* daemon should have one of these.
*/
#define FRR_DAEMON_INFO(execname, constname, ...) \
static struct frr_daemon_info execname##_di = {.name = #execname, \
.logname = #constname, \
.module = THIS_MODULE, \
__VA_ARGS__}; \
FRR_COREMOD_SETUP(.name = #execname, \
.description = #execname " daemon", \
.version = FRR_VERSION, ); \
MACRO_REQUIRE_SEMICOLON() /* end */
extern void frr_init_vtydir(void);
extern void frr_preinit(struct frr_daemon_info *daemon, int argc, char **argv);
extern void frr_opt_add(const char *optstr, const struct option *longopts,
const char *helpstr);
extern int frr_getopt(int argc, char *const argv[], int *longindex);
extern __attribute__((__noreturn__)) void frr_help_exit(int status);
extern struct event_loop *frr_init(void);
extern const char *frr_get_progname(void);
extern enum frr_cli_mode frr_get_cli_mode(void);
extern uint32_t frr_get_fd_limit(void);
extern bool frr_is_startup_fd(int fd);
/* call order of these hooks is as ordered here */
DECLARE_HOOK(frr_early_init, (struct event_loop * tm), (tm));
DECLARE_HOOK(frr_late_init, (struct event_loop * tm), (tm));
/* fork() happens between late_init and config_pre */
DECLARE_HOOK(frr_config_pre, (struct event_loop * tm), (tm));
DECLARE_HOOK(frr_config_post, (struct event_loop * tm), (tm));
extern void frr_config_fork(void);
extern void frr_run(struct event_loop *master);
extern void frr_detach(void);
extern void frr_vty_serv_start(void);
extern void frr_vty_serv_stop(void);
extern bool frr_zclient_addr(struct sockaddr_storage *sa, socklen_t *sa_len,
const char *path);
/* these two are before the protocol daemon does its own shutdown
* it's named this way being the counterpart to frr_late_init */
DECLARE_KOOH(frr_early_fini, (), ());
extern void frr_early_fini(void);
/* and these two are after the daemon did its own cleanup */
DECLARE_KOOH(frr_fini, (), ());
extern void frr_fini(void);
extern char config_default[512];
extern char frr_zclientpath[256];
extern const char frr_sysconfdir[];
extern char frr_vtydir[256];
extern const char frr_moduledir[];
extern const char frr_scriptdir[];
extern char frr_protoname[];
extern char frr_protonameinst[];
/* always set in the spot where we *would* fork even if we don't do so */
extern bool frr_is_after_fork;
extern bool debug_memstats_at_exit;
#ifdef __cplusplus
}
#endif
#endif /* _ZEBRA_FRR_H */
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