From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([208.118.235.92]:53460) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1UG9jk-0007R1-4h for qemu-devel@nongnu.org; Thu, 14 Mar 2013 11:06:37 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1UG9jd-0004LC-FY for qemu-devel@nongnu.org; Thu, 14 Mar 2013 11:06:32 -0400 Received: from e23smtp08.au.ibm.com ([202.81.31.141]:52139) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1UG9jc-0004Kl-Ua for qemu-devel@nongnu.org; Thu, 14 Mar 2013 11:06:25 -0400 Received: from /spool/local by e23smtp08.au.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Fri, 15 Mar 2013 01:04:22 +1000 Received: from d23relay04.au.ibm.com (d23relay04.au.ibm.com [9.190.234.120]) by d23dlp02.au.ibm.com (Postfix) with ESMTP id 8C5752BB0050 for ; Fri, 15 Mar 2013 02:06:17 +1100 (EST) Received: from d23av03.au.ibm.com (d23av03.au.ibm.com [9.190.234.97]) by d23relay04.au.ibm.com (8.13.8/8.13.8/NCO v10.0) with ESMTP id r2EErUEB1376578 for ; Fri, 15 Mar 2013 01:53:31 +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 r2EF6G3L001255 for ; Fri, 15 Mar 2013 02:06:16 +1100 From: Lei Li Date: Thu, 14 Mar 2013 23:05:52 +0800 Message-Id: <1363273553-29111-2-git-send-email-lilei@linux.vnet.ibm.com> In-Reply-To: <1363273553-29111-1-git-send-email-lilei@linux.vnet.ibm.com> References: <1363273553-29111-1-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 Signed-off-by: Lei Li --- qga/commands-win32.c | 29 +++++++++++++++++++++++++++++ 1 file changed, 29 insertions(+) diff --git a/qga/commands-win32.c b/qga/commands-win32.c index 7e8ecb3..b395bd5 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 +114,29 @@ void qmp_guest_shutdown(bool has_mode, const char *mode, Error **err) } } +int64_t qmp_guest_get_time(Error **errp) +{ + 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_errno(errp, errno, "Failed to convert system time"); + return -1; + } + + time_ns = ((((int64_t)tf.dwHighDateTime << 32) | tf.dwLowDateTime) + - 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); -- 1.7.11.7