package/ppp/patches/206-compensate_time_change.patch

   1 diff -Naur ppp-2.4.4.orig/pppd/main.c ppp-2.4.4/pppd/main.c
   2 --- ppp-2.4.4.orig/pppd/main.c  2009-05-07 22:25:24.000000000 -0400
   3 +++ ppp-2.4.4/pppd/main.c       2009-05-07 22:22:40.000000000 -0400
   4 @@ -90,6 +90,7 @@
   5  #include <sys/socket.h>
   6  #include <netinet/in.h>
   7  #include <arpa/inet.h>
   8 +#include <sys/sysinfo.h>
   9
  10  #include "pppd.h"
  11  #include "magic.h"
  12 @@ -227,6 +228,7 @@
  13
  14  /* Prototypes for procedures local to this file. */
  15
  16 +static void check_time(void);
  17  static void setup_signals __P((void));
  18  static void create_pidfile __P((int pid));
  19  static void create_linkpidfile __P((int pid));
  20 @@ -532,6 +534,7 @@
  21             info("Starting link");
  22         }
  23
  24 +       check_time();
  25         gettimeofday(&start_time, NULL);
  26         script_unsetenv("CONNECT_TIME");
  27         script_unsetenv("BYTES_SENT");
  28 @@ -1264,6 +1267,36 @@
  29
  30  static struct callout *callout = NULL; /* Callout list */
  31  static struct timeval timenow;         /* Current time */
  32 +static long uptime_diff = 0;
  33 +static int uptime_diff_set = 0;
  34 +
  35 +static void check_time(void)
  36 +{
  37 +       long new_diff;
  38 +       struct timeval t;
  39 +       struct sysinfo i;
  40 +    struct callout *p;
  41 +
  42 +       gettimeofday(&t, NULL);
  43 +       sysinfo(&i);
  44 +       new_diff = t.tv_sec - i.uptime;
  45 +
  46 +       if (!uptime_diff_set) {
  47 +               uptime_diff = new_diff;
  48 +               uptime_diff_set = 1;
  49 +               return;
  50 +       }
  51 +
  52 +       if ((new_diff - 5 > uptime_diff) || (new_diff + 5 < uptime_diff)) {
  53 +               /* system time has changed, update counters and timeouts */
  54 +               info("System time change detected.");
  55 +               start_time.tv_sec += new_diff - uptime_diff;
  56 +
  57 +       for (p = callout; p != NULL; p = p->c_next)
  58 +                       p->c_time.tv_sec += new_diff - uptime_diff;
  59 +       }
  60 +       uptime_diff = new_diff;
  61 +}
  62
  63  /*
  64   * timeout - Schedule a timeout.
  65 @@ -1334,6 +1367,8 @@
  66  {
  67      struct callout *p;
  68
  69 +       check_time();
  70 +
  71      while (callout != NULL) {
  72         p = callout;
  73
  74 @@ -1361,6 +1396,8 @@
  75  {
  76      if (callout == NULL)
  77         return NULL;
  78 +
  79 +       check_time();
  80
  81      gettimeofday(&timenow, NULL);
  82      tvp->tv_sec = callout->c_time.tv_sec - timenow.tv_sec;
  83 diff -Naur ppp-2.4.4.orig/pppd/main.c ppp-2.4.4/pppd/main.c
  84 --- ppp-2.4.4.orig/pppd/main.c  2009-05-07 22:25:24.000000000 -0400
  85 +++ ppp-2.4.4/pppd/main.c       2009-05-07 22:22:40.000000000 -0400
  86 @@ -90,6 +90,7 @@
  87  #include <sys/socket.h>
  88  #include <netinet/in.h>
  89  #include <arpa/inet.h>
  90 +#include <sys/sysinfo.h>
  91
  92  #include "pppd.h"
  93  #include "magic.h"
  94 @@ -227,6 +228,7 @@
  95
  96  /* Prototypes for procedures local to this file. */
  97
  98 +static void check_time(void);
  99  static void setup_signals __P((void));
 100  static void create_pidfile __P((int pid));
 101  static void create_linkpidfile __P((int pid));
 102 @@ -532,6 +534,7 @@
 103             info("Starting link");
 104         }
 105
 106 +       check_time();
 107         gettimeofday(&start_time, NULL);
 108         script_unsetenv("CONNECT_TIME");
 109         script_unsetenv("BYTES_SENT");
 110 @@ -1264,6 +1267,36 @@
 111
 112  static struct callout *callout = NULL; /* Callout list */
 113  static struct timeval timenow;         /* Current time */
 114 +static long uptime_diff = 0;
 115 +static int uptime_diff_set = 0;
 116 +
 117 +static void check_time(void)
 118 +{
 119 +       long new_diff;
 120 +       struct timeval t;
 121 +       struct sysinfo i;
 122 +    struct callout *p;
 123 +
 124 +       gettimeofday(&t, NULL);
 125 +       sysinfo(&i);
 126 +       new_diff = t.tv_sec - i.uptime;
 127 +
 128 +       if (!uptime_diff_set) {
 129 +               uptime_diff = new_diff;
 130 +               uptime_diff_set = 1;
 131 +               return;
 132 +       }
 133 +
 134 +       if ((new_diff - 5 > uptime_diff) || (new_diff + 5 < uptime_diff)) {
 135 +               /* system time has changed, update counters and timeouts */
 136 +               info("System time change detected.");
 137 +               start_time.tv_sec += new_diff - uptime_diff;
 138 +
 139 +       for (p = callout; p != NULL; p = p->c_next)
 140 +                       p->c_time.tv_sec += new_diff - uptime_diff;
 141 +       }
 142 +       uptime_diff = new_diff;
 143 +}
 144
 145  /*
 146   * timeout - Schedule a timeout.
 147 @@ -1334,6 +1367,8 @@
 148  {
 149      struct callout *p;
 150
 151 +       check_time();
 152 +
 153      while (callout != NULL) {
 154         p = callout;
 155
 156 @@ -1361,6 +1396,8 @@
 157  {
 158      if (callout == NULL)
 159         return NULL;
 160 +
 161 +       check_time();
 162
 163      gettimeofday(&timenow, NULL);
 164      tvp->tv_sec = callout->c_time.tv_sec - timenow.tv_sec;