some preliminaries for vdso clock support

these changes also make it so clock_gettime(CLOCK_REALTIME, &ts) works
even on pre-2.6 kernels, emulated via the gettimeofday syscall. there
is no cost for the fallback check, as it falls under the error case
that already must be checked for storing the error code in errno, but
which would normally be hidden inside __syscall_ret.

1 files changed, 6 insertions, 4 deletions

diff --git a/src/time/time.c b/src/time/time.c
index 05e075b9..22754850 100644
--- a/src/time/time.c
+++ b/src/time/time.c
@@ -2,10 +2,12 @@
 #include <sys/time.h>
 #include "syscall.h"
 
+int __clock_gettime(clockid_t, struct timespec *);
+
 time_t time(time_t *t)
 {
-	struct timeval tv;
-	__syscall(SYS_gettimeofday, &tv, 0);
-	if (t) *t = tv.tv_sec;
-	return tv.tv_sec;
+	struct timespec ts;
+	__clock_gettime(CLOCK_REALTIME, &ts);
+	if (t) *t = ts.tv_sec;
+	return ts.tv_sec;
 }