Signed-off-by: Lei Li <li...@linux.vnet.ibm.com>
---
qga/commands-win32.c | 33 +++++++++++++++++++++++++++++++++
1 file changed, 33 insertions(+)
diff --git a/qga/commands-win32.c b/qga/commands-win32.c
index 7e8ecb3..e24fb4a 100644
--- a/qga/commands-win32.c
+++ b/qga/commands-win32.c
@@ -22,6 +22,12 @@
#define SHTDN_REASON_FLAG_PLANNED 0x80000000
#endif
+/* multiple of 100 nanoseconds elapsed between windows baseline
+ (1/1/1601) and Unix Epoch (1/1/1970), accounting for leap years */
+#define W32_FT_OFFSET (10000000ULL * 60 * 60 * 24 * \
+ (365 * (1970 - 1601) + \
+ (1970 - 1601) / 4 - 3))
+
static void acquire_privilege(const char *name, Error **err)
{
HANDLE token;
@@ -108,6 +114,33 @@ void qmp_guest_shutdown(bool has_mode, const char *mode,
Error **err)
}
}
+int64_t qmp_guest_get_time(Error **errp)
+{
+ SYSTEMTIME *ts = g_malloc0(sizeof(SYSTEMTIME));
+ int64_t time_ns;
+ FILETIME tf;
+
+ GetSystemTime(ts);
+ if (!ts) {
+ error_setg(errp, "Failed to get time");
+ goto out;
+ }
+
+ if (!SystemTimeToFileTime(ts, &tf)) {
+ error_setg_errno(errp, errno, "Failed to convert system time");
+ goto out;
+ }
+
+ time_ns = ((((int64_t)tf.dwHighDateTime << 32) | tf.dwLowDateTime)
+ - W32_FT_OFFSET) * 100;
+
+ return time_ns;
+
+out:
+ g_free(ts);
+ return -1;
+}
+
int64_t qmp_guest_file_open(const char *path, bool has_mode, const char *mode,
Error **err)
{
error_set(err, QERR_UNSUPPORTED);
--
1.7.11.7
