From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([208.118.235.92]:37771) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1UFieL-0008LT-Jw for qemu-devel@nongnu.org; Wed, 13 Mar 2013 06:11:15 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1UFieE-0001MY-SU for qemu-devel@nongnu.org; Wed, 13 Mar 2013 06:11:09 -0400 Received: from e23smtp04.au.ibm.com ([202.81.31.146]:42143) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1UFieD-0001Lz-SA for qemu-devel@nongnu.org; Wed, 13 Mar 2013 06:11:02 -0400 Received: from /spool/local by e23smtp04.au.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Wed, 13 Mar 2013 20:00:53 +1000 Received: from d23relay03.au.ibm.com (d23relay03.au.ibm.com [9.190.235.21]) by d23dlp02.au.ibm.com (Postfix) with ESMTP id 27CB12BB0050 for ; Wed, 13 Mar 2013 21:10:55 +1100 (EST) Received: from d23av03.au.ibm.com (d23av03.au.ibm.com [9.190.234.97]) by d23relay03.au.ibm.com (8.13.8/8.13.8/NCO v10.0) with ESMTP id r2DAAp5D64487586 for ; Wed, 13 Mar 2013 21:10:51 +1100 Received: from d23av03.au.ibm.com (loopback [127.0.0.1]) by d23av03.au.ibm.com (8.14.4/8.13.1/NCO v10.0 AVout) with ESMTP id r2DAAstL023009 for ; Wed, 13 Mar 2013 21:10:54 +1100 From: lilei@linux.vnet.ibm.com Date: Wed, 13 Mar 2013 18:10:30 +0800 Message-Id: <1363169431-1561-2-git-send-email-lilei@linux.vnet.ibm.com> In-Reply-To: <1363169431-1561-1-git-send-email-lilei@linux.vnet.ibm.com> References: <1363169431-1561-1-git-send-email-lilei@linux.vnet.ibm.com> Subject: [Qemu-devel] [PATCH 1/2] qga: add windows implementation for guest-get-time List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: aliguori@us.ibm.com, mdroth@linux.vnet.ibm.com, Lei Li From: Lei Li Signed-off-by: Lei Li --- qga/commands-win32.c | 32 ++++++++++++++++++++++++++++++++ 1 files changed, 32 insertions(+), 0 deletions(-) diff --git a/qga/commands-win32.c b/qga/commands-win32.c index 7e8ecb3..0a2bb34 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 +114,32 @@ 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; + union { + UINT64 ns100; + FILETIME tf; + } time; + + GetSystemTime(ts); + if (!ts) { + slog("guest-get-time failed: %d", GetLastError()); + error_setg_errno(errp, errno, "Failed to get time"); + return -1; + } + + if (!SystemTimeToFileTime(ts, &time.tf)) { + error_setg_errno(errp, errno, "Failed to convert system time"); + return -1; + } + + time_ns = (int64_t)((time.ns100 - W32_FT_OFFSET) * 100); + + return time_ns; +} + 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