Patchwork [3/4] qga: add windows implementation for guest-get-time

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Submitter Lei Li
Date March 6, 2013, 12:57 p.m.
Message ID <1362574665-4709-2-git-send-email-lilei@linux.vnet.ibm.com>
Download mbox | patch
Permalink /patch/225489/
State New
Headers show

Comments

Lei Li - March 6, 2013, 12:57 p.m.
Signed-off-by: Lei Li <lilei@linux.vnet.ibm.com>
---
 qga/commands-win32.c |   28 ++++++++++++++++++++++++++++
 1 files changed, 28 insertions(+), 0 deletions(-)
Lei Li - March 6, 2013, 1:41 p.m.
Ops, wrong patch set... will resend it. Sorry for the missending.  :-(

On 03/06/2013 08:57 PM, Lei Li wrote:
> Signed-off-by: Lei Li <lilei@linux.vnet.ibm.com>
> ---
>   qga/commands-win32.c |   28 ++++++++++++++++++++++++++++
>   1 files changed, 28 insertions(+), 0 deletions(-)
>
> diff --git a/qga/commands-win32.c b/qga/commands-win32.c
> index 7e8ecb3..4febec7 100644
> --- a/qga/commands-win32.c
> +++ b/qga/commands-win32.c
> @@ -22,6 +22,8 @@
>   #define SHTDN_REASON_FLAG_PLANNED 0x80000000
>   #endif
>
> +#define _W32_FT_OFFSET (116444736000000000ULL)
> +
>   static void acquire_privilege(const char *name, Error **err)
>   {
>       HANDLE token;
> @@ -108,6 +110,32 @@ 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);

Patch

diff --git a/qga/commands-win32.c b/qga/commands-win32.c
index 7e8ecb3..4febec7 100644
--- a/qga/commands-win32.c
+++ b/qga/commands-win32.c
@@ -22,6 +22,8 @@ 
 #define SHTDN_REASON_FLAG_PLANNED 0x80000000
 #endif
 
+#define _W32_FT_OFFSET (116444736000000000ULL)
+
 static void acquire_privilege(const char *name, Error **err)
 {
     HANDLE token;
@@ -108,6 +110,32 @@  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);