Signed-off-by: Lei Li <li...@linux.vnet.ibm.com>
---
qga/commands-win32.c | 35 +++++++++++++++++++++++++++++++++++
1 files changed, 35 insertions(+), 0 deletions(-)
diff --git a/qga/commands-win32.c b/qga/commands-win32.c
index 4febec7..1a90aa7 100644
--- a/qga/commands-win32.c
+++ b/qga/commands-win32.c
@@ -136,6 +136,41 @@ int64_t qmp_guest_get_time(Error **errp)
return time_ns;
}
+void qmp_guest_set_time(int64_t time_ns, Error **errp)
+{
+ SYSTEMTIME ts;
+ FILETIME tf;
+ LONGLONG time;
+
+ /* year-2038 will overflow in case time_t is 32bit */
+ if (time_ns / 1000000000 != (time_t)(time_ns / 1000000000)) {
+ error_setg(errp, "Time %" PRId64 " is too large", time_ns);
+ return;
+ }
+
+ acquire_privilege(SE_SYSTEMTIME_NAME, errp);
+ if (error_is_set(errp)) {
+ error_setg(errp, "Failed to acquire privilege");
+ return;
+ }
+
+ time = time_ns / 100 + _W32_FT_OFFSET;
+
+ tf.dwLowDateTime = (DWORD) time;
+ tf.dwHighDateTime = (DWORD) (time >> 32);
+
+ if (!FileTimeToSystemTime(&tf, &ts)) {
+ error_setg(errp, "Failed to convert system time");
+ return;
+ }
+
+ if (!SetSystemTime(&ts)) {
+ slog("guest-set-time failed: %d", GetLastError());
+ error_setg_errno(errp, errno, "Failed to set time to guest");
+ return;
+ }
+}
+
int64_t qmp_guest_file_open(const char *path, bool has_mode, const char *mode,
Error **err)
{
error_set(err, QERR_UNSUPPORTED);
--
1.7.7.6
