From 518c66881bffc16f1468a6e3cd7849f1bdffa8bc Mon Sep 17 00:00:00 2001 Message-Id: <518c66881bffc16f1468a6e3cd7849f1bdffa8bc.1367947969.git.minovotn@redhat.com> In-Reply-To: <707b9b97153063374d2530e72c49b1499fc21af9.1367947969.git.minovotn@redhat.com> References: <707b9b97153063374d2530e72c49b1499fc21af9.1367947969.git.minovotn@redhat.com> From: Laszlo Ersek Date: Mon, 6 May 2013 19:28:15 +0200 Subject: [PATCH 110/114] qga: add windows implementation for guest-get-time RH-Author: Laszlo Ersek Message-id: <1367868499-27603-53-git-send-email-lersek@redhat.com> Patchwork-id: 51151 O-Subject: [RHEL-6.5 qemu-kvm PATCH v2 52/56] qga: add windows implementation for guest-get-time Bugzilla: 952873 RH-Acked-by: Jeffrey Cody RH-Acked-by: Gerd Hoffmann RH-Acked-by: Paolo Bonzini From: Lei Li Signed-off-by: Lei Li Reviewed-by: Eric Blake Reviewed-by: Michael Roth Signed-off-by: Michael Roth (cherry picked from commit 3f2a6087de291dc96a2c4975139da27649cf32ff) Signed-off-by: Laszlo Ersek --- qga/commands-win32.c | 27 +++++++++++++++++++++++++-- 1 files changed, 25 insertions(+), 2 deletions(-) Signed-off-by: Michal Novotny --- qga/commands-win32.c | 27 +++++++++++++++++++++++++-- 1 file changed, 25 insertions(+), 2 deletions(-) diff --git a/qga/commands-win32.c b/qga/commands-win32.c index da3eb2a..92dd7ab 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; @@ -280,8 +286,25 @@ GuestNetworkInterfaceList *qmp_guest_network_get_interfaces(Error **err) int64_t qmp_guest_get_time(Error **errp) { - error_set(errp, QERR_UNSUPPORTED); - return -1; + SYSTEMTIME ts = {0}; + int64_t time_ns; + FILETIME tf; + + GetSystemTime(&ts); + if (ts.wYear < 1601 || ts.wYear > 30827) { + error_setg(errp, "Failed to get time"); + return -1; + } + + if (!SystemTimeToFileTime(&ts, &tf)) { + error_setg(errp, "Failed to convert system time: %d", (int)GetLastError()); + return -1; + } + + time_ns = ((((int64_t)tf.dwHighDateTime << 32) | tf.dwLowDateTime) + - W32_FT_OFFSET) * 100; + + return time_ns; } void qmp_guest_set_time(int64_t time_ns, Error **errp) -- 1.7.11.7