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Add rtcsync directive

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The directive enables the 11 minute kernel mode. It cannot be used
when the normal RTC tracking is enabled.
This commit is contained in:
Miroslav Lichvar
2010-05-14 14:41:11 +02:00
parent 5fb0a9d53b
commit a080d00352
8 changed files with 74 additions and 10 deletions
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42
wrap_adjtimex.c
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@@ -39,8 +39,7 @@
#include "chrony_timex.h"
#include "wrap_adjtimex.h"
/* Save leap status between calls */
static int leap_status = 0;
static int status = 0;
int
TMX_SetTick(long tick)
@@ -75,9 +74,16 @@ TMX_SetFrequency(double *freq, long tick)
txc.freq = (long)(*freq * (double)(1 << SHIFT_USEC));
*freq = txc.freq / (double)(1 << SHIFT_USEC);
txc.tick = tick;
txc.status = STA_UNSYNC; /* Prevent any of the FLL/PLL stuff coming
up */
txc.status |= leap_status; /* Preserve leap bits */
/* Prevent any of the FLL/PLL stuff coming up */
txc.status = status;
if (!(status & STA_UNSYNC)) {
/* maxerror has to be reset periodically to prevent kernel
from enabling UNSYNC flag */
txc.modes |= ADJ_MAXERROR;
txc.maxerror = 0;
}
return adjtimex(&txc);
}
@@ -165,16 +171,32 @@ TMX_SetLeap(int leap)
{
struct timex txc;
status &= ~(STA_INS | STA_DEL);
if (leap > 0) {
leap_status = STA_INS;
status |= STA_INS;
} else if (leap < 0) {
leap_status = STA_DEL;
} else {
leap_status = 0;
status |= STA_DEL;
}
txc.modes = ADJ_STATUS;
txc.status = STA_UNSYNC | leap_status;
txc.status = status;
return adjtimex(&txc);
}
int TMX_SetSync(int sync)
{
struct timex txc;
if (sync) {
status &= ~STA_UNSYNC;
} else {
status |= STA_UNSYNC;
}
txc.modes = ADJ_STATUS;
txc.status = status;
return adjtimex(&txc);
}