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[Qemu-devel] [PATCH 2/2] qga: add windows implementation for guest-set-t
From: |
Lei Li |
Subject: |
[Qemu-devel] [PATCH 2/2] qga: add windows implementation for guest-set-time |
Date: |
Tue, 12 Mar 2013 17:08:26 +0800 |
Signed-off-by: Lei Li <address@hidden>
---
qga/commands-win32.c | 34 ++++++++++++++++++++++++++++++++++
1 file changed, 34 insertions(+)
diff --git a/qga/commands-win32.c b/qga/commands-win32.c
index 0a2bb34..e000324 100644
--- a/qga/commands-win32.c
+++ b/qga/commands-win32.c
@@ -140,6 +140,40 @@ 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;
+
+ acquire_privilege(SE_SYSTEMTIME_NAME, errp);
+ if (error_is_set(errp)) {
+ error_setg(errp, "Failed to acquire privilege");
+ return;
+ }
+
+ if (time_ns < 0 || time_ns / 100 > INT64_MAX - W32_FT_OFFSET) {
+ error_setg(errp, "Time %" PRId64 "is invalid", time_ns);
+ 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);
--
1.7.11.7