implement the adjtime and adjtimex functions (nonstandard)

diff --git a/src/linux/adjtime.c b/src/linux/adjtime.c
new file mode 100644 (file)
index 0000000..fa8af9f
--- /dev/null
+++ b/src/linux/adjtime.c
@@ -0,0 +1,27 @@
+#define _GNU_SOURCE
+#include <sys/time.h>
+#include <sys/timex.h>
+#include <errno.h>
+#include "syscall.h"
+
+int adjtime(const struct timeval *in, struct timeval *out)
+{
+       struct timex tx = { 0 };
+       if (in) {
+               if (in->tv_sec > 1000 || in->tv_usec > 1000000000) {
+                       errno = EINVAL;
+                       return -1;
+               }
+               tx.offset = in->tv_sec*1000000 + in->tv_usec;
+               tx.modes = ADJ_OFFSET_SINGLESHOT;
+       }
+       if (syscall(SYS_adjtimex, &tx) < 0) return -1;
+       if (out) {
+               out->tv_sec = tx.offset / 1000000;
+               if ((out->tv_usec = tx.offset % 1000000) < 0) {
+                       out->tv_sec--;
+                       out->tv_usec += 1000000;
+               }
+       }
+       return 0;
+}

diff --git a/src/linux/adjtimex.c b/src/linux/adjtimex.c
new file mode 100644 (file)
index 0000000..91de682
--- /dev/null
+++ b/src/linux/adjtimex.c
@@ -0,0 +1,7 @@
+#include <sys/timex.h>
+#include "syscall.h"
+
+int adjtimex(struct timex *tx)
+{
+       return syscall(SYS_adjtimex, tx);
+}