1 /* $NetBSD: ntpd.h,v 1.14 2024/10/01 20:59:51 christos Exp $ */ 2 3 /* 4 * ntpd.h - Prototypes and external variables for ntpd. 5 * 6 * Note the first half is primarily function prototypes, type 7 * declarations, and preprocessor macros, with variables declared 8 * primarily in the second half. 9 * 10 * Each half is further divided into sections for each source file. 11 */ 12 13 #include "ntp.h" 14 #include "ntp_stdlib.h" 15 #include "ntp_syslog.h" 16 #include "ntp_debug.h" 17 #include "ntp_syslog.h" 18 #include "ntp_select.h" 19 #include "ntp_malloc.h" 20 #include "ntp_refclock.h" 21 #include "ntp_intres.h" 22 #include "recvbuff.h" 23 24 /* 25 * First half: ntpd types, functions, macros 26 * ----------------------------------------- 27 */ 28 29 /* 30 * macro for debugging output - cut down on #ifdef pollution. 31 * 32 * DPRINTF() is for use by ntpd only, and compiles away to nothing 33 * without DEBUG (configure --disable-debugging). 34 * 35 * TRACE() is similar for libntp and utilities, which retain full 36 * debug capability even when compiled without DEBUG. 37 * 38 * The calling convention is not attractive: 39 * DPRINTF(debuglevel, (fmt, ...)); 40 * DPRINTF(2, ("shows #ifdef DEBUG and if debug >= %d\n", 2)); 41 */ 42 #ifdef DEBUG 43 # define DPRINTF(lvl, arg) \ 44 do { \ 45 if (debug >= (lvl)) \ 46 mprintf arg; \ 47 } while (0) 48 #else 49 # define DPRINTF(lvl, arg) do {} while (0) 50 #endif 51 52 /* clear bitflag only on DEBUG builds */ 53 #ifdef DEBUG 54 # define CLEAR_BIT_IF_DEBUG(bit, flags) \ 55 do { \ 56 (flags) &= ~(bit); \ 57 } while (FALSE) 58 #else 59 # define CLEAR_BIT_IF_DEBUG(bit, flags) \ 60 do {} while (FALSE) 61 #endif 62 63 64 /* nt_clockstuff.c */ 65 #ifdef SYS_WINNT 66 extern void win_time_stepped(void); 67 #endif 68 69 /* ntp_config.c */ 70 #define TAI_1972 10 /* initial TAI offset (s) */ 71 extern char *keysdir; /* crypto keys and leaptable directory */ 72 extern char * saveconfigdir; /* ntpq saveconfig output directory */ 73 74 extern void getconfig (int, char **); 75 extern void ctl_clr_stats (void); 76 extern int ctlclrtrap (sockaddr_u *, endpt *, int); 77 extern u_short ctlpeerstatus (struct peer *); 78 extern int ctlsettrap (sockaddr_u *, endpt *, int, int); 79 extern u_short ctlsysstatus (void); 80 extern void init_control (void); 81 extern void process_control (struct recvbuf *, int); 82 extern void report_event (int, struct peer *, const char *); 83 extern int mprintf_event (int evcode, struct peer *p, 84 const char *fmt, ...) NTP_PRINTF(3, 4); 85 86 /* ntp_control.c */ 87 /* 88 * Structure for translation tables between internal system 89 * variable indices and text format. 90 */ 91 struct ctl_var { 92 u_short code; 93 u_short flags; 94 const char *text; 95 }; 96 /* 97 * Flag values 98 */ 99 #define CAN_READ 0x01 100 #define CAN_WRITE 0x02 101 102 #define DEF 0x20 103 #define PADDING 0x40 104 #define EOV 0x80 105 106 #define RO (CAN_READ) 107 #define WO (CAN_WRITE) 108 #define RW (CAN_READ|CAN_WRITE) 109 110 extern char * add_var (struct ctl_var **, u_long, u_short); 111 extern void free_varlist (struct ctl_var *); 112 extern void set_var (struct ctl_var **, const char *, u_long, u_short); 113 extern void set_sys_var (const char *, u_long, u_short); 114 extern const char * get_ext_sys_var(const char *tag); 115 116 /* ntp_io.c */ 117 typedef struct interface_info { 118 endpt * ep; 119 u_char action; 120 } interface_info_t; 121 122 typedef void (*interface_receiver_t) (void *, interface_info_t *); 123 124 extern void interface_enumerate (interface_receiver_t, void *); 125 extern endpt * getinterface (sockaddr_u *, u_int32); 126 extern endpt * select_peerinterface (struct peer *, sockaddr_u *, 127 endpt *); 128 extern endpt * findinterface (sockaddr_u *); 129 extern endpt * findbcastinter (sockaddr_u *); 130 extern void enable_broadcast (endpt *, sockaddr_u *); 131 extern void enable_multicast_if (endpt *, sockaddr_u *); 132 extern void interface_update (interface_receiver_t, void *); 133 #ifndef HAVE_IO_COMPLETION_PORT 134 extern void io_handler (void); 135 #else 136 extern void WINAPI ip_interface_changed(ULONG_PTR ctx); 137 #endif 138 extern void init_io (void); 139 extern void io_open_sockets (void); 140 extern void io_clr_stats (void); 141 extern void io_setbclient (void); 142 extern void io_unsetbclient (void); 143 extern void io_multicast_add(sockaddr_u *); 144 extern void io_multicast_del(sockaddr_u *); 145 extern void sendpkt (sockaddr_u *dest, endpt * ep, int ttl, 146 struct pkt *pkt, int len); 147 extern isc_boolean_t is_linklocal(sockaddr_u *psau); 148 #ifdef DEBUG_TIMING 149 extern void collect_timing (struct recvbuf *, const char *, int, l_fp *); 150 #endif 151 #ifdef HAVE_SIGNALED_IO 152 extern void wait_for_signal (void); 153 extern void unblock_io_and_alarm (void); 154 extern void block_io_and_alarm (void); 155 # define UNBLOCK_IO_AND_ALARM() unblock_io_and_alarm() 156 # define BLOCK_IO_AND_ALARM() block_io_and_alarm() 157 #else 158 # define UNBLOCK_IO_AND_ALARM() do {} while (0) 159 # define BLOCK_IO_AND_ALARM() do {} while (0) 160 #endif 161 #define eptoa(pif) localaddrtoa(pif) 162 #define latoa(pif) eptoa(pif) 163 extern const char * localaddrtoa(endpt *); 164 #ifdef DEBUG 165 extern const char * iflags_str(u_int32 iflags); 166 #endif 167 168 169 /* ntp_loopfilter.c */ 170 extern void init_loopfilter(void); 171 extern int local_clock(struct peer *, double); 172 extern void adj_host_clock(void); 173 extern void loop_config(int, double); 174 extern void select_loop(int); 175 extern void huffpuff(void); 176 extern u_long sys_clocktime; 177 extern u_int sys_tai; 178 extern int freq_cnt; 179 180 /* ntp_monitor.c */ 181 #define MON_HASH_SIZE ((size_t)1U << mon_hash_bits) 182 #define MON_HASH_MASK (MON_HASH_SIZE - 1) 183 #define MON_HASH(addr) (sock_hash(addr) & MON_HASH_MASK) 184 extern void init_mon (void); 185 extern void mon_start (int); 186 extern void mon_stop (int); 187 extern u_short ntp_monitor (struct recvbuf *, u_short); 188 extern void mon_clearinterface(endpt *interface); 189 190 /* ntp_peer.c */ 191 extern void init_peer (void); 192 extern struct peer *findexistingpeer(sockaddr_u *, const char *, 193 struct peer *, int, u_char, int *); 194 extern struct peer *findpeer (struct recvbuf *, int, int *); 195 extern struct peer *findpeerbyassoc(associd_t); 196 extern void set_peerdstadr (struct peer *, endpt *); 197 extern struct peer *newpeer (sockaddr_u *, const char *, endpt *, 198 int, u_char, u_char, u_char, u_char, 199 u_int, u_char, u_int32, 200 keyid_t, const char *); 201 extern void peer_all_reset (void); 202 extern void peer_clr_stats (void); 203 extern struct peer *peer_config(sockaddr_u *, const char *, endpt *, 204 int, u_char, u_char, u_char, u_char, 205 u_int, u_int32, 206 keyid_t, const char *); 207 extern void peer_reset (struct peer *); 208 extern void refresh_all_peerinterfaces(void); 209 extern void unpeer (struct peer *); 210 extern void clear_all (void); 211 extern int score_all (struct peer *); 212 extern struct peer *findmanycastpeer(struct recvbuf *); 213 extern void peer_cleanup (void); 214 215 /* ntp_crypto.c */ 216 #ifdef AUTOKEY 217 extern int crypto_recv (struct peer *, struct recvbuf *); 218 extern int crypto_xmit (struct peer *, struct pkt *, 219 struct recvbuf *, int, 220 struct exten *, keyid_t); 221 extern keyid_t session_key (sockaddr_u *, sockaddr_u *, keyid_t, 222 keyid_t, u_long); 223 extern int make_keylist (struct peer *, endpt *); 224 extern void key_expire (struct peer *); 225 extern void crypto_update (void); 226 extern void crypto_update_taichange(void); 227 extern void crypto_config (int, char *); 228 extern void crypto_setup (void); 229 extern u_int crypto_ident (struct peer *); 230 extern struct exten *crypto_args (struct peer *, u_int, associd_t, char *); 231 extern int crypto_public (struct peer *, u_char *, u_int); 232 extern void value_free (struct value *); 233 extern char *iffpar_file; 234 extern EVP_PKEY *iffpar_pkey; 235 extern char *gqpar_file; 236 extern EVP_PKEY *gqpar_pkey; 237 extern char *mvpar_file; 238 extern EVP_PKEY *mvpar_pkey; 239 extern struct value tai_leap; 240 #endif /* AUTOKEY */ 241 242 /* ntp_proto.c */ 243 extern void transmit (struct peer *); 244 extern void receive (struct recvbuf *); 245 extern void peer_clear (struct peer *, const char *); 246 extern void process_packet (struct peer *, struct pkt *, u_int); 247 extern void clock_select (void); 248 extern void set_sys_leap (u_char); 249 250 extern u_long leapsec; /* seconds to next leap (proximity class) */ 251 extern int leapdif; /* TAI difference step at next leap second */ 252 extern int sys_orphan; 253 extern double sys_mindisp; 254 extern double sys_maxdist; 255 256 extern char *sys_ident; /* identity scheme */ 257 extern void poll_update (struct peer *, u_char, u_char); 258 259 extern void clear (struct peer *); 260 extern void clock_filter (struct peer *, double, double, double); 261 extern void init_proto (void); 262 extern void set_sys_tick_precision(double); 263 extern void proto_config (int, u_long, double, sockaddr_u *); 264 extern void proto_clr_stats (void); 265 266 /* ntp_refclock.c */ 267 #ifdef REFCLOCK 268 extern int refclock_newpeer (struct peer *); 269 extern void refclock_unpeer (struct peer *); 270 extern void refclock_receive (struct peer *); 271 extern void refclock_transmit (struct peer *); 272 extern void init_refclock (void); 273 #endif /* REFCLOCK */ 274 275 /* ntp_request.c */ 276 extern void init_request (void); 277 extern void process_private (struct recvbuf *, int); 278 extern void reset_auth_stats(void); 279 280 /* ntp_restrict.c */ 281 extern void init_restrict (void); 282 extern void restrictions (sockaddr_u *, r4addr *); 283 extern int/*BOOL*/hack_restrict(restrict_op op, sockaddr_u *resaddr, 284 sockaddr_u *resmask, short ippeerlimit, 285 u_short mflags, u_short rflags, 286 u_int32 expire); 287 extern void restrict_source (sockaddr_u *addr, int/*BOOL*/ remove, 288 u_int32 lifetime); 289 #ifdef DEBUG 290 extern void dump_restricts (void); 291 extern const char *resop_str (restrict_op op); 292 extern const char *rflags_str (u_short rflags); 293 extern const char *mflags_str (u_short mflags); 294 #endif 295 296 297 /* ntp_timer.c */ 298 extern void init_timer (void); 299 extern void reinit_timer (void); 300 extern void timer (void); 301 extern void timer_clr_stats (void); 302 extern int endpt_scan_period; /* -U option default 301s */ 303 extern u_long endpt_scan_timer; /* next scan current_time */ 304 extern u_long orphwait; /* orphan wait time */ 305 #ifdef AUTOKEY 306 extern char *sys_hostname; /* host name */ 307 extern char *sys_groupname; /* group name */ 308 extern char *group_name; /* group name */ 309 extern u_char sys_revoke; /* keys revoke timeout */ 310 extern u_char sys_automax; /* session key timeout */ 311 #endif /* AUTOKEY */ 312 313 /* ntp_util.c */ 314 extern void init_util (void); 315 extern void write_stats (void); 316 extern void stats_config (int, const char *, int optflag); 317 extern void record_peer_stats (sockaddr_u *, int, double, double, double, double); 318 extern void record_proto_stats (char *); 319 extern void record_loop_stats (double, double, double, double, int); 320 extern void record_clock_stats (sockaddr_u *, const char *); 321 extern int mprintf_clock_stats(sockaddr_u *, const char *, ...) 322 NTP_PRINTF(2, 3); 323 extern void record_raw_stats (sockaddr_u *srcadr, sockaddr_u *dstadr, 324 l_fp *t1, l_fp *t2, l_fp *t3, l_fp *t4, 325 int leap, int version, int mode, 326 int stratum, int ppoll, int precision, 327 double root_delay, double root_dispersion, 328 u_int32 refid, int len, u_char *extra); 329 extern void check_leap_file (int is_daily_check, u_int32 ntptime, const time_t * systime); 330 extern void record_crypto_stats (sockaddr_u *, const char *); 331 #ifdef DEBUG 332 extern void record_timing_stats (const char *); 333 extern void append_flagstr(char *flagstr, size_t sz, const char *text); 334 #endif 335 extern char * fstostr(time_t); /* NTP timescale seconds */ 336 337 /* ntpd.c */ 338 extern void parse_cmdline_opts(int *, char ***); 339 340 /* ntservice.c */ 341 #ifndef SYS_WINNT 342 # define ntservice_isup() do {} while (FALSE) 343 #endif 344 345 /* 346 * Signals we catch for debugging. 347 */ 348 #define MOREDEBUGSIG SIGUSR1 349 #define LESSDEBUGSIG SIGUSR2 350 /* 351 * Signals which terminate us gracefully. 352 */ 353 #ifndef SYS_WINNT 354 # define SIGDIE1 SIGHUP 355 # define SIGDIE2 SIGINT 356 # define SIGDIE3 SIGQUIT 357 # define SIGDIE4 SIGTERM 358 #endif /* SYS_WINNT */ 359 360 361 /* 362 * Last half: ntpd variables 363 * ------------------------- 364 */ 365 366 /* ntp_config.c */ 367 extern char const * progname; 368 extern int saved_argc; 369 extern char **saved_argv; 370 extern char *sys_phone[]; /* ACTS phone numbers */ 371 #if defined(HAVE_SCHED_SETSCHEDULER) 372 extern int config_priority_override; 373 extern int config_priority; 374 #endif 375 extern char *ntp_signd_socket; 376 extern struct config_tree_tag *cfg_tree_history; 377 378 #ifdef BC_LIST_FRAMEWORK_NOT_YET_USED 379 /* 380 * backwards compatibility flags 381 */ 382 typedef struct bc_entry_tag { 383 int token; 384 int enabled; 385 } bc_entry; 386 387 extern bc_entry bc_list[]; 388 #endif 389 390 /* ntp_control.c */ 391 extern int num_ctl_traps; 392 extern keyid_t ctl_auth_keyid; /* keyid used for authenticating write requests */ 393 394 /* 395 * Statistic counters to keep track of requests and responses. 396 */ 397 extern u_long ctltimereset; /* time stats reset */ 398 extern u_long numctlreq; /* number of requests we've received */ 399 extern u_long numctlbadpkts; /* number of bad control packets */ 400 extern u_long numctlresponses; /* number of resp packets sent with data */ 401 extern u_long numctlfrags; /* number of fragments sent */ 402 extern u_long numctlerrors; /* number of error responses sent */ 403 extern u_long numctltooshort; /* number of too short input packets */ 404 extern u_long numctlinputresp; /* number of responses on input */ 405 extern u_long numctlinputfrag; /* number of fragments on input */ 406 extern u_long numctlinputerr; /* number of input pkts with err bit set */ 407 extern u_long numctlbadoffset; /* number of input pkts with nonzero offset */ 408 extern u_long numctlbadversion; /* number of input pkts with unknown version */ 409 extern u_long numctldatatooshort; /* data too short for count */ 410 extern u_long numctlbadop; /* bad op code found in packet */ 411 extern u_long numasyncmsgs; /* number of async messages we've sent */ 412 413 /* 414 * Other statistics of possible interest 415 */ 416 extern volatile u_long packets_dropped; /* total number of packets dropped on reception */ 417 extern volatile u_long packets_ignored; /* packets received on wild card interface */ 418 extern volatile u_long packets_received;/* total number of packets received */ 419 extern u_long packets_sent; /* total number of packets sent */ 420 extern u_long packets_notsent; /* total number of packets which couldn't be sent */ 421 422 extern volatile u_long handler_calls; /* number of calls to interrupt handler */ 423 extern volatile u_long handler_pkts; /* number of pkts received by handler */ 424 extern u_long io_timereset; /* time counters were reset */ 425 426 /* ntp_io.c */ 427 extern int no_periodic_scan; /* no periodic net addr scans */ 428 extern int scan_addrs_once; /* no net addr rescans */ 429 extern int nonlocal_v4_addr_up; /* should we try IPv4 pool? */ 430 extern int nonlocal_v6_addr_up; /* should we try IPv6 pool? */ 431 extern u_int sys_ifnum; /* next .ifnum to assign */ 432 extern endpt * any_interface; /* IPv4 wildcard */ 433 extern endpt * any6_interface; /* IPv6 wildcard */ 434 extern endpt * loopback_interface; /* IPv4 loopback for refclocks */ 435 extern endpt * ep_list; /* linked list */ 436 437 /* ntp_loopfilter.c */ 438 extern double drift_comp; /* clock frequency (s/s) */ 439 extern double clock_stability; /* clock stability (s/s) */ 440 extern double clock_max_back; /* max backward offset before step (s) */ 441 extern double clock_max_fwd; /* max forward offset before step (s) */ 442 extern double clock_panic; /* max offset before panic (s) */ 443 extern double clock_phi; /* dispersion rate (s/s) */ 444 extern double clock_minstep; /* step timeout (s) */ 445 extern double clock_codec; /* codec frequency */ 446 #ifdef KERNEL_PLL 447 extern int pll_status; /* status bits for kernel pll */ 448 #endif /* KERNEL_PLL */ 449 450 /* 451 * Clock state machine control flags 452 */ 453 extern int ntp_enable; /* clock discipline enabled */ 454 extern int pll_control; /* kernel support available */ 455 extern int kern_enable; /* kernel support enabled */ 456 extern int hardpps_enable; /* kernel PPS discipline enabled */ 457 extern int ext_enable; /* external clock enabled */ 458 extern int cal_enable; /* refclock calibrate enable */ 459 extern int allow_panic; /* allow panic correction (-g) */ 460 extern int enable_panic_check; /* Can we check allow_panic's state? */ 461 extern int force_step_once; /* always step time once at startup (-G) */ 462 extern int mode_ntpdate; /* exit on first clock set (-q) */ 463 extern int peer_ntpdate; /* count of ntpdate peers */ 464 465 /* 466 * Clock state machine variables 467 */ 468 extern u_char sys_poll; /* system poll interval (log2 s) */ 469 extern int state; /* clock discipline state */ 470 extern int tc_counter; /* poll-adjust counter */ 471 extern u_long last_time; /* time of last clock update (s) */ 472 extern double last_offset; /* last clock offset (s) */ 473 extern u_char allan_xpt; /* Allan intercept (log2 s) */ 474 extern double clock_jitter; /* clock jitter (s) */ 475 extern double sys_offset; /* system offset (s) */ 476 extern double sys_jitter; /* system jitter (s) */ 477 478 /* ntp_monitor.c */ 479 extern u_char mon_hash_bits; /* log2 size of hash table */ 480 extern mon_entry ** mon_hash; /* MRU hash table */ 481 extern mon_entry mon_mru_list; /* mru listhead */ 482 extern u_int mon_enabled; /* MON_OFF (0) or other MON_* */ 483 extern u_int mru_alloc; /* mru list + free list count */ 484 extern u_int mru_entries; /* mru list count */ 485 extern u_int mru_peakentries; /* highest mru_entries */ 486 extern u_int mru_initalloc; /* entries to preallocate */ 487 extern u_int mru_incalloc; /* allocation batch factor */ 488 extern u_int mru_mindepth; /* preempt above this */ 489 extern int mru_maxage; /* for entries older than */ 490 extern u_int mru_maxdepth; /* MRU size hard limit */ 491 extern int mon_age; /* preemption limit */ 492 493 /* ntp_peer.c */ 494 extern struct peer *peer_hash[NTP_HASH_SIZE]; /* peer hash table */ 495 extern int peer_hash_count[NTP_HASH_SIZE]; /* count of in each bucket */ 496 extern struct peer *assoc_hash[NTP_HASH_SIZE]; /* association ID hash table */ 497 extern int assoc_hash_count[NTP_HASH_SIZE];/* count of in each bucket */ 498 extern struct peer *peer_list; /* peer structures list */ 499 extern int peer_count; /* count in peer_list */ 500 extern int peer_free_count; /* count in peer_free */ 501 502 /* 503 * Miscellaneous statistic counters which may be queried. 504 */ 505 extern u_long peer_timereset; /* time stat counters were zeroed */ 506 extern u_long findpeer_calls; /* number of calls to findpeer */ 507 extern u_long assocpeer_calls; /* number of calls to findpeerbyassoc */ 508 extern u_long peer_allocations; /* number of allocations from the free list */ 509 extern u_long peer_demobilizations; /* number of structs freed to free list */ 510 extern int total_peer_structs; /* number of peer structs in circulation */ 511 extern int peer_associations; /* mobilized associations */ 512 extern int peer_preempt; /* preemptable associations */ 513 514 /* ntp_proto.c */ 515 /* 516 * System variables are declared here. See Section 3.2 of the 517 * specification. 518 */ 519 extern u_char sys_leap; /* system leap indicator */ 520 extern u_char sys_stratum; /* system stratum */ 521 extern s_char sys_precision; /* local clock precision */ 522 extern double sys_rootdelay; /* roundtrip delay to primary source */ 523 extern double sys_rootdisp; /* dispersion to primary source */ 524 extern u_int32 sys_refid; /* reference id */ 525 extern l_fp sys_reftime; /* last update time */ 526 extern struct peer *sys_peer; /* current peer */ 527 528 /* 529 * Nonspecified system state variables. 530 */ 531 extern int sys_bclient; /* we set our time to broadcasts */ 532 extern int sys_mclient; /* we set our time to manycasts */ 533 extern double sys_bdelay; /* broadcast client default delay */ 534 extern int sys_authenticate; /* requre authentication for config */ 535 extern l_fp sys_authdelay; /* authentication delay */ 536 extern u_char sys_bcpollbstep; /* broadcast poll backstep gate */ 537 extern u_long sys_epoch; /* last clock update time */ 538 extern keyid_t sys_private; /* private value for session seed */ 539 extern int sys_manycastserver; /* respond to manycast client pkts */ 540 extern int sys_maxclock; /* maximum survivors */ 541 extern int sys_minclock; /* minimum survivors */ 542 extern int sys_minsane; /* minimum candidates */ 543 extern int sys_floor; /* cluster stratum floor */ 544 extern int sys_ceiling; /* cluster stratum ceiling */ 545 extern u_char sys_ttl[MAX_TTL]; /* ttl mapping vector */ 546 extern u_int sys_ttlmax; /* max ttl mapping vector index */ 547 548 /* 549 * Statistics counters 550 */ 551 extern u_long sys_badauth; /* bad authentication */ 552 extern u_long sys_badlength; /* bad length or format */ 553 extern u_long sys_declined; /* declined */ 554 extern u_long sys_kodsent; /* KoD sent */ 555 extern u_long sys_lamport; /* Lamport violation */ 556 extern u_long sys_limitrejected; /* rate exceeded */ 557 extern u_long sys_newversion; /* current version */ 558 extern u_long sys_oldversion; /* old version */ 559 extern u_long sys_processed; /* packets for this host */ 560 extern u_long sys_received; /* packets received */ 561 extern u_long sys_restricted; /* access denied */ 562 extern u_long sys_stattime; /* time since reset */ 563 extern u_long sys_tsrounding; /* timestamp rounding errors */ 564 565 /* ntp_request.c */ 566 extern keyid_t info_auth_keyid; /* keyid used to authenticate requests */ 567 extern u_long auth_timereset; 568 569 /* ntp_restrict.c */ 570 extern struct restrict_4 * restrictlist4; /* IPv4 restriction list */ 571 extern struct restrict_6 * restrictlist6; /* IPv6 restriction list */ 572 extern int ntp_minpkt; 573 extern u_char ntp_minpoll; 574 575 /* ntp_scanner.c */ 576 extern u_int32 conf_file_sum; /* Simple sum of characters */ 577 578 /* ntp_signd.c */ 579 #ifdef HAVE_NTP_SIGND 580 extern void send_via_ntp_signd(struct recvbuf *, int, keyid_t, int, 581 struct pkt *); 582 #endif 583 584 /* ntp_timer.c */ 585 extern volatile int alarm_flag; /* alarm flag */ 586 extern volatile u_long alarm_overflow; 587 extern u_long current_time; /* seconds since startup */ 588 extern u_long timer_timereset; 589 extern u_long timer_overflows; 590 extern u_long timer_xmtcalls; 591 extern int leap_sec_in_progress; 592 #ifdef LEAP_SMEAR 593 extern struct leap_smear_info leap_smear; 594 extern int leap_smear_intv; 595 #endif 596 #ifdef SYS_WINNT 597 HANDLE WaitableTimerHandle; 598 #endif 599 600 /* ntp_util.c */ 601 extern char statsdir[MAXFILENAME]; 602 extern int stats_control; /* write stats to fileset? */ 603 extern int stats_write_period; /* # of seconds between writes. */ 604 extern double stats_write_tolerance; 605 extern double wander_threshold; 606 607 /* ntpd.c */ 608 extern int nofork; /* no-fork flag */ 609 extern int initializing; /* initializing flag */ 610 #ifdef HAVE_DROPROOT 611 extern int droproot; /* flag: try to drop root privileges after startup */ 612 extern int root_dropped; /* root has been dropped */ 613 extern char *user; /* user to switch to */ 614 extern char *group; /* group to switch to */ 615 extern const char *chrootdir; /* directory to chroot() to */ 616 #endif 617 #ifdef HAVE_WORKING_FORK 618 extern int daemon_pipe[2]; /* startup monitoring */ 619 #endif 620 621 /* ntservice.c */ 622 #ifdef SYS_WINNT 623 extern int accept_wildcard_if_for_winnt; 624 #endif 625 626 /* refclock_conf.c */ 627 #ifdef REFCLOCK 628 /* refclock configuration table */ 629 extern struct refclock * const refclock_conf[]; 630 extern u_char num_refclock_conf; 631 #endif 632 633