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[RFC PATCH 48/52] Y2038: add function __adjtimex_t64 (and __ntp_adjtime_t64)
Signed-off-by: Albert ARIBAUD (3ADEV) <albert.aribaud@3adev.fr>
---
include/time.h | 31 +++++++++++++++
sysdeps/unix/sysv/linux/adjtime.c | 81 +++++++++++++++++++++++++++++++++++++++
time/Versions | 1 +
3 files changed, 113 insertions(+)
diff --git a/include/time.h b/include/time.h
index 5db1d44470..1914c20a75 100644
--- a/include/time.h
+++ b/include/time.h
@@ -72,6 +72,37 @@ struct __ntptimeval_t64
long int __glibc_reserved4;
};
+/* 64-bit time version of the current struct timex */
+struct __timex_t64
+{
+ unsigned int modes; /* mode selector */
+ __syscall_slong_t offset; /* time offset (usec) */
+ __syscall_slong_t freq; /* frequency offset (scaled ppm) */
+ __syscall_slong_t maxerror; /* maximum error (usec) */
+ __syscall_slong_t esterror; /* estimated error (usec) */
+ int status; /* clock command/status */
+ __syscall_slong_t constant; /* pll time constant */
+ __syscall_slong_t precision; /* clock precision (usec) (ro) */
+ __syscall_slong_t tolerance; /* clock frequency tolerance (ppm) (ro) */
+ struct __timeval64 time; /* (read only, except for ADJ_SETOFFSET) */
+ __syscall_slong_t tick; /* (modified) usecs between clock ticks */
+ __syscall_slong_t ppsfreq; /* pps frequency (scaled ppm) (ro) */
+ __syscall_slong_t jitter; /* pps jitter (us) (ro) */
+ int shift; /* interval duration (s) (shift) (ro) */
+ __syscall_slong_t stabil; /* pps stability (scaled ppm) (ro) */
+ __syscall_slong_t jitcnt; /* jitter limit exceeded (ro) */
+ __syscall_slong_t calcnt; /* calibration intervals (ro) */
+ __syscall_slong_t errcnt; /* calibration errors (ro) */
+ __syscall_slong_t stbcnt; /* stability limit exceeded (ro) */
+
+ int tai; /* TAI offset (ro) */
+
+ /* ??? */
+ int :32; int :32; int :32; int :32;
+ int :32; int :32; int :32; int :32;
+ int :32; int :32; int :32;
+};
+
extern __typeof (clock_getres) __clock_getres;
extern __typeof (clock_gettime) __clock_gettime;
libc_hidden_proto (__clock_gettime)
diff --git a/sysdeps/unix/sysv/linux/adjtime.c b/sysdeps/unix/sysv/linux/adjtime.c
index 28a75a2e40..60211a5223 100644
--- a/sysdeps/unix/sysv/linux/adjtime.c
+++ b/sysdeps/unix/sysv/linux/adjtime.c
@@ -19,6 +19,7 @@
#include <limits.h>
#include <sys/time.h>
#include <sys/timex.h>
+#include <include/time.h>
#define MAX_SEC (INT_MAX / 1000000L - 2)
#define MIN_SEC (INT_MIN / 1000000L + 2)
@@ -133,3 +134,83 @@ int __adjtime_t64 (const struct __timeval64 *itv,
}
return 0;
}
+
+int
+__adjtimex_t64(struct __timex_t64 *tx)
+{
+ struct timex tx32;
+
+ if (__y2038_linux_support)
+ {
+ /* TODO: implement with a 64-bit time syscall */
+ }
+
+ if (tx == NULL)
+ {
+ __set_errno (EFAULT);
+ return -1;
+ }
+
+ if ((tx->modes & ADJ_SETOFFSET) != 0 && tx->time.tv_sec > INT_MAX)
+ {
+ __set_errno (EOVERFLOW);
+ return -1;
+ }
+
+ /* Implement with existing 32-bit time syscall */
+
+ /* Just copy everything */
+ tx32.modes = tx->modes;
+ tx32.offset = tx->offset;
+ tx32.freq = tx->freq;
+ tx32.maxerror = tx->maxerror;
+ tx32.esterror = tx->esterror;
+ tx32.status = tx->status;
+ tx32.constant = tx->constant;
+ tx32.precision = tx->precision;
+ tx32.tolerance = tx->tolerance;
+ tx32.time.tv_sec = tx->time.tv_sec;
+ tx32.time.tv_usec = tx->time.tv_usec;
+ tx32.tick = tx->tick;
+ tx32.ppsfreq = tx->ppsfreq;
+ tx32.jitter = tx->jitter;
+ tx32.shift = tx->shift;
+ tx32.stabil = tx->stabil;
+ tx32.jitcnt = tx->jitcnt;
+ tx32.calcnt = tx->calcnt;
+ tx32.errcnt = tx->errcnt;
+ tx32.stbcnt = tx->stbcnt;
+
+ tx32.tai = tx->tai;
+ /* WARNING -- anonymous fields after TAI are not copied. */
+
+ int result = ADJTIMEX(&tx32);
+
+ if (result == 0)
+ {
+ /* Just copy back everything */
+ tx->modes = tx32.modes;
+ tx->offset = tx32.offset;
+ tx->freq = tx32.freq;
+ tx->maxerror = tx32.maxerror;
+ tx->esterror = tx32.esterror;
+ tx->status = tx32.status;
+ tx->constant = tx32.constant;
+ tx->precision = tx32.precision;
+ tx->tolerance = tx32.tolerance;
+ tx->time.tv_sec = tx32.time.tv_sec;
+ tx->time.tv_usec = tx32.time.tv_usec;
+ tx->tick = tx32.tick;
+ tx->ppsfreq = tx32.ppsfreq;
+ tx->jitter = tx32.jitter;
+ tx->shift = tx32.shift;
+ tx->stabil = tx32.stabil;
+ tx->jitcnt = tx32.jitcnt;
+ tx->calcnt = tx32.calcnt;
+ tx->errcnt = tx32.errcnt;
+ tx->stbcnt = tx32.stbcnt;
+ }
+
+ return result;
+}
+weak_alias (__adjtimex_t64, __ntp_adjtime_t64);
diff --git a/time/Versions b/time/Versions
index b847718757..9e23793cfb 100644
--- a/time/Versions
+++ b/time/Versions
@@ -79,5 +79,6 @@ libc {
__adjtime_t64;
__getitimer_t64;
__setitimer_t64;
+ __adjtimex_t64;
}
}
--
2.11.0