net/openntpd/patches/001-adjtimex_linux.patch

   1 diff -urN openntpd-3.9p1/client.c openntpd-3.9p1.new/client.c
   2 --- openntpd-3.9p1/client.c     2006-05-14 07:29:21.000000000 +0200
   3 +++ openntpd-3.9p1.new/client.c 2006-11-03 11:05:18.000000000 +0100
   4 @@ -321,7 +321,7 @@
   5         priv_adjtime();
   6
   7         for (i = 0; i < OFFSET_ARRAY_SIZE; i++)
   8 -               if (p->reply[i].rcvd <= p->reply[best].rcvd)
   9 +               /* if (p->reply[i].rcvd <= p->reply[best].rcvd) */
  10                         p->reply[i].good = 0;
  11
  12         return (0);
  13 diff -urN openntpd-3.9p1/configure.ac openntpd-3.9p1.new/configure.ac
  14 --- openntpd-3.9p1/configure.ac 2006-05-14 07:29:23.000000000 +0200
  15 +++ openntpd-3.9p1.new/configure.ac     2006-11-03 11:06:26.000000000 +0100
  16 @@ -583,6 +583,12 @@
  17         [ builtin_arc4random=$withval ]
  18  )
  19
  20 +AC_ARG_WITH(adjtimex,
  21 +       [  --with-adjtimex         Use adjtimex to adjust kernel skew],
  22 +       [ AC_DEFINE(USE_ADJTIMEX, [], [Use adjust skew with adjtimex (experimental)]) ]
  23 +)
  24 +
  25 +
  26  AC_ARG_WITH(mantype,
  27         [  --with-mantype=man|cat|doc  Set man page type],
  28         [
  29 diff -urN openntpd-3.9p1/defines.h openntpd-3.9p1.new/defines.h
  30 --- openntpd-3.9p1/defines.h    2006-05-14 07:29:21.000000000 +0200
  31 +++ openntpd-3.9p1.new/defines.h        2006-11-03 11:06:56.000000000 +0100
  32 @@ -20,6 +20,10 @@
  33  # define setproctitle(x)
  34  #endif
  35
  36 +#ifdef USE_ADJTIMEX
  37 +# define adjtime(a,b)  (_compat_adjtime((a),(b)))
  38 +#endif
  39 +
  40  #if !defined(SA_LEN)
  41  # if defined(HAVE_STRUCT_SOCKADDR_SA_LEN)
  42  #  define SA_LEN(x)    ((x)->sa_len)
  43 diff -urN openntpd-3.9p1/openbsd-compat/Makefile.in openntpd-3.9p1.new/openbsd-compat/Makefile.in
  44 --- openntpd-3.9p1/openbsd-compat/Makefile.in   2006-05-14 07:29:19.000000000 +0200
  45 +++ openntpd-3.9p1.new/openbsd-compat/Makefile.in       2006-11-03 11:07:20.000000000 +0100
  46 @@ -9,7 +9,7 @@
  47  COMPAT=                atomicio.o bsd-arc4random.o bsd-misc.o bsd-poll.o \
  48                 bsd-snprintf.o bsd-getifaddrs.o bsd-setresuid.o \
  49                 bsd-setresgid.o fake-rfc2553.o
  50 -PORT=          port-qnx.o
  51 +PORT=          port-linux.o port-qnx.o
  52
  53  VPATH=@srcdir@
  54  CC=@CC@
  55 diff -urN openntpd-3.9p1/openbsd-compat/openbsd-compat.h openntpd-3.9p1.new/openbsd-compat/openbsd-compat.h
  56 --- openntpd-3.9p1/openbsd-compat/openbsd-compat.h      2006-05-14 07:29:19.000000000 +0200
  57 +++ openntpd-3.9p1.new/openbsd-compat/openbsd-compat.h  2006-11-03 11:07:55.000000000 +0100
  58 @@ -46,6 +46,11 @@
  59                  __attribute__((__format__ (printf, 2, 3)));
  60  #endif
  61
  62 +#ifdef USE_ADJTIMEX
  63 +# include <sys/time.h>
  64 +int _compat_adjtime(const struct timeval *, struct timeval *);
  65 +#endif
  66 +
  67  #ifndef HAVE_INET_PTON
  68  int inet_pton(int, const char *, void *);
  69  #endif
  70 diff -urN openntpd-3.9p1/openbsd-compat/port-linux.c openntpd-3.9p1.new/openbsd-compat/port-linux.c
  71 --- openntpd-3.9p1/openbsd-compat/port-linux.c  1970-01-01 01:00:00.000000000 +0100
  72 +++ openntpd-3.9p1.new/openbsd-compat/port-linux.c      2006-11-03 11:08:57.000000000 +0100
  73 @@ -0,0 +1,105 @@
  74 +/* $Id$ */
  75 +
  76 +/*
  77 + * Copyright (c) 2004 Darren Tucker <dtucker at zip com au>
  78 + *
  79 + * Permission to use, copy, modify, and distribute this software for any
  80 + * purpose with or without fee is hereby granted, provided that the above
  81 + * copyright notice and this permission notice appear in all copies.
  82 + *
  83 + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  84 + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  85 + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  86 + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  87 + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  88 + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  89 + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  90 + */
  91 +
  92 +#include "includes.h"
  93 +
  94 +#ifdef USE_ADJTIMEX
  95 +#include <sys/timex.h>
  96 +#include <errno.h>
  97 +#ifdef adjtime
  98 +# undef adjtime
  99 +#endif
 100 +
 101 +#include "ntpd.h"
 102 +
 103 +/* scale factor used by adjtimex freq param.  1 ppm = 65536 */
 104 +#define ADJTIMEX_FREQ_SCALE 65536
 105 +
 106 +/* maximum change to skew per adjustment, in PPM */
 107 +#define MAX_SKEW_DELTA 5.0
 108 +
 109 +int
 110 +_compat_adjtime(const struct timeval *delta, struct timeval *olddelta)
 111 +{
 112 +       static struct timeval tlast = {0,0};
 113 +       static double tskew = 0;
 114 +       static int synced = -1;
 115 +       struct timeval tnow, tdelta;
 116 +       double skew = 0, newskew, deltaskew, adjust, interval = 0;
 117 +       struct timex tmx;
 118 +       int result, saved_errno;
 119 +
 120 +       gettimeofday(&tnow, NULL);
 121 +       adjust = (double)delta->tv_sec;
 122 +       adjust += (double)delta->tv_usec / 1000000;
 123 +
 124 +       /* Even if the caller doesn't care about the olddelta, we do */
 125 +       if (olddelta == NULL)
 126 +               olddelta = &tdelta;
 127 +
 128 +       result = adjtime(delta, olddelta);
 129 +       saved_errno = errno;
 130 +
 131 +       if (olddelta->tv_sec == 0 && olddelta->tv_usec == 0 &&
 132 +           synced != INT_MAX)
 133 +               synced++;
 134 +        else
 135 +               synced = 0;
 136 +
 137 +       /*
 138 +        * do skew calculations if we have synced
 139 +        */
 140 +       if (synced == 0 ) {
 141 +               tmx.modes = 0;
 142 +               if (adjtimex(&tmx) == -1)
 143 +                       log_warn("adjtimex get failed");
 144 +               else
 145 +                       tskew = (double)tmx.freq / ADJTIMEX_FREQ_SCALE;
 146 +       } else if (synced >= 1) {
 147 +               interval = (double)(tnow.tv_sec - tlast.tv_sec);
 148 +               interval += (double)(tnow.tv_usec - tlast.tv_usec) / 1000000;
 149 +
 150 +               skew = (adjust * 1000000) / interval;
 151 +               newskew = ((tskew * synced) + skew) / synced;
 152 +               deltaskew = newskew - tskew;
 153 +
 154 +               if (deltaskew > MAX_SKEW_DELTA) {
 155 +                       log_info("skew change %0.3lf exceeds limit", deltaskew);
 156 +                       tskew += MAX_SKEW_DELTA;
 157 +               } else if (deltaskew < -MAX_SKEW_DELTA) {
 158 +                       log_info("skew change %0.3lf exceeds limit", deltaskew);
 159 +                       tskew -= MAX_SKEW_DELTA;
 160 +               } else {
 161 +                       tskew = newskew;
 162 +               }
 163 +
 164 +               /* Adjust the kernel skew.  */
 165 +               tmx.freq = (long)(tskew * ADJTIMEX_FREQ_SCALE);
 166 +               tmx.modes = ADJ_FREQUENCY;
 167 +               if (adjtimex(&tmx) == -1)
 168 +                       log_warn("adjtimex set freq failed");
 169 +       }
 170 +
 171 +       log_debug("interval %0.3lf skew %0.3lf total skew %0.3lf", interval,
 172 +           skew, tskew);
 173 +
 174 +       tlast = tnow;
 175 +       errno = saved_errno;
 176 +       return result;
 177 +}
 178 +#endif