135

Unix/Linux 网络时间协议版本3 Network Time Protocol Version 3 (NTP) distribution for Unix systems

Replied: Thu, 15 May 1997 22:58:18 -0400
Replied: "Christos Zoulas <[e-mail]> "
Replied: Sun, 04 May 1997 01:40:41 -0400
Replied: "Christos Zoulas <[e-mail]> "
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From: Christos Zoulas <[e-mail]>
Date: Sun, 20 Apr 1997 23:04:01 -0400
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Subject: another xntpd patch


This adds supports for getting tick and tickadj from sysctl() instead of
kvm. This is better, because we don't explicitly know the size of the
kernel variables (this broke on the alpha).

christos

*** ntp_unixclock.c.orig	Fri Apr 18 09:42:09 1997
--- ntp_unixclock.c	Sun Apr 20 22:30:52 1997
***************
*** 59,64 ****
--- 59,70 ----
  # undef hz
  #endif /* hz */
  
+ #ifdef HAVE_SYSCTL_CLOCKRATE
+ #include <sys/param.h>
+ #include <sys/sysctl.h>
+ #include <sys/time.h>
+ #endif
+ 
  extern int debug;
  /*
   * These routines (init_systime, get_systime, step_systime, adj_systime)
***************
*** 267,272 ****
--- 273,304 ----
   * clock_parms - return the local clock tickadj and tick parameters
   *
   */
+ 
+ #ifdef HAVE_SYSCTL_CLOCKRATE
+ static void
+ clock_parms(ptickadj, ptick)
+     u_long *ptickadj;
+     u_long *ptick;
+ {
+     int mib[2];
+     size_t len;
+     struct clockinfo c;
+     int e;
+ 
+     mib[0] = CTL_KERN;
+     mib[1] = KERN_CLOCKRATE;
+     len = sizeof(c);
+     e = sysctl(mib,2,&c,&len,NULL,0);
+     if (e != 0) {
+ 	NLOG(NLOG_SYSINFO) /* conditional if clause for conditional syslog */
+ 	syslog(LOG_NOTICE, "Could not find clockrate with sysctl\n");
+ 	exit(1);
+     }
+     *ptickadj = c.tickadj;
+     *ptick = c.tick;
+ }
+ #else
+ 
  static void
  clock_parms(ptickadj, ptick)
       u_long *ptickadj;
***************
*** 704,707 ****
--- 736,740 ----
      printf("tick = %ld, tickadj = %ld, hz = %d\n", *ptick, *ptickadj, hz);
  #endif
  }
+ #endif
  #endif /* not VMS */