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