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authorGal Hammer <ghammer@redhat.com>2012-01-29 11:53:31 +0200
committerMichael Roth <mdroth@linux.vnet.ibm.com>2012-03-12 15:09:18 -0500
commitaa59637ea1c6a4c83430933f9c44c43e6c3f1b69 (patch)
tree54f15e2007bf38d8428218894a628c141528e118 /qga/commands-win32.c
parent95f4f404e108f8c6b937ddf2ba973f3799b51fb5 (diff)
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qemu-ga: add win32 guest-suspend-disk command.
Implement guest-suspend-disk RPC for Windows. Functionally this should be equivalent to the posix implementation. Signed-off-by: Gal Hammer <ghammer@redhat.com>
Diffstat (limited to 'qga/commands-win32.c')
-rw-r--r--qga/commands-win32.c132
1 files changed, 120 insertions, 12 deletions
diff --git a/qga/commands-win32.c b/qga/commands-win32.c
index 7ef185f..062e519 100644
--- a/qga/commands-win32.c
+++ b/qga/commands-win32.c
@@ -5,12 +5,15 @@
*
* Authors:
* Michael Roth <mdroth@linux.vnet.ibm.com>
+ * Gal Hammer <ghammer@redhat.com>
*
* This work is licensed under the terms of the GNU GPL, version 2 or later.
* See the COPYING file in the top-level directory.
*/
#include <glib.h>
+#include <wtypes.h>
+#include <powrprof.h>
#include "qga/guest-agent-core.h"
#include "qga-qmp-commands.h"
#include "qerror.h"
@@ -19,10 +22,63 @@
#define SHTDN_REASON_FLAG_PLANNED 0x80000000
#endif
-void qmp_guest_shutdown(bool has_mode, const char *mode, Error **err)
+static void acquire_privilege(const char *name, Error **err)
{
HANDLE token;
TOKEN_PRIVILEGES priv;
+ Error *local_err = NULL;
+
+ if (error_is_set(err)) {
+ return;
+ }
+
+ if (OpenProcessToken(GetCurrentProcess(),
+ TOKEN_ADJUST_PRIVILEGES|TOKEN_QUERY, &token))
+ {
+ if (!LookupPrivilegeValue(NULL, name, &priv.Privileges[0].Luid)) {
+ error_set(&local_err, QERR_QGA_COMMAND_FAILED,
+ "no luid for requested privilege");
+ goto out;
+ }
+
+ priv.PrivilegeCount = 1;
+ priv.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
+
+ if (!AdjustTokenPrivileges(token, FALSE, &priv, 0, NULL, 0)) {
+ error_set(&local_err, QERR_QGA_COMMAND_FAILED,
+ "unable to acquire requested privilege");
+ goto out;
+ }
+
+ CloseHandle(token);
+ } else {
+ error_set(&local_err, QERR_QGA_COMMAND_FAILED,
+ "failed to open privilege token");
+ }
+
+out:
+ if (local_err) {
+ error_propagate(err, local_err);
+ }
+}
+
+static void execute_async(DWORD WINAPI (*func)(LPVOID), LPVOID opaque, Error **err)
+{
+ Error *local_err = NULL;
+
+ if (error_is_set(err)) {
+ return;
+ }
+ HANDLE thread = CreateThread(NULL, 0, func, opaque, 0, NULL);
+ if (!thread) {
+ error_set(&local_err, QERR_QGA_COMMAND_FAILED,
+ "failed to dispatch asynchronous command");
+ error_propagate(err, local_err);
+ }
+}
+
+void qmp_guest_shutdown(bool has_mode, const char *mode, Error **err)
+{
UINT shutdown_flag = EWX_FORCE;
slog("guest-shutdown called, mode: %s", mode);
@@ -41,16 +97,9 @@ void qmp_guest_shutdown(bool has_mode, const char *mode, Error **err)
/* Request a shutdown privilege, but try to shut down the system
anyway. */
- if (OpenProcessToken(GetCurrentProcess(),
- TOKEN_ADJUST_PRIVILEGES|TOKEN_QUERY, &token))
- {
- LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,
- &priv.Privileges[0].Luid);
-
- priv.PrivilegeCount = 1;
- priv.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
-
- AdjustTokenPrivileges(token, FALSE, &priv, 0, NULL, 0);
+ acquire_privilege(SE_SHUTDOWN_NAME, err);
+ if (error_is_set(err)) {
+ return;
}
if (!ExitWindowsEx(shutdown_flag, SHTDN_REASON_FLAG_PLANNED)) {
@@ -124,9 +173,68 @@ int64_t qmp_guest_fsfreeze_thaw(Error **err)
return 0;
}
+typedef enum {
+ GUEST_SUSPEND_MODE_DISK
+} GuestSuspendMode;
+
+static void check_suspend_mode(GuestSuspendMode mode, Error **err)
+{
+ SYSTEM_POWER_CAPABILITIES sys_pwr_caps;
+ Error *local_err = NULL;
+
+ if (error_is_set(err)) {
+ return;
+ }
+ ZeroMemory(&sys_pwr_caps, sizeof(sys_pwr_caps));
+ if (!GetPwrCapabilities(&sys_pwr_caps)) {
+ error_set(&local_err, QERR_QGA_COMMAND_FAILED,
+ "failed to determine guest suspend capabilities");
+ goto out;
+ }
+
+ if (mode == GUEST_SUSPEND_MODE_DISK) {
+ if (sys_pwr_caps.SystemS4) {
+ return;
+ }
+ } else {
+ error_set(&local_err, QERR_INVALID_PARAMETER_VALUE, "mode",
+ "GuestSuspendMode");
+ goto out;
+ }
+
+ error_set(&local_err, QERR_QGA_COMMAND_FAILED,
+ "suspend mode not supported by OS");
+out:
+ if (local_err) {
+ error_propagate(err, local_err);
+ }
+}
+
+static DWORD WINAPI do_suspend(LPVOID opaque)
+{
+ GuestSuspendMode *mode = opaque;
+ DWORD ret = 0;
+
+ if (!SetSuspendState(*mode == GUEST_SUSPEND_MODE_DISK, TRUE, TRUE)) {
+ slog("failed to suspend guest, %s", GetLastError());
+ ret = -1;
+ }
+ g_free(mode);
+ return ret;
+}
+
void qmp_guest_suspend_disk(Error **err)
{
- error_set(err, QERR_UNSUPPORTED);
+ GuestSuspendMode *mode = g_malloc(sizeof(GuestSuspendMode));
+
+ *mode = GUEST_SUSPEND_MODE_DISK;
+ check_suspend_mode(*mode, err);
+ acquire_privilege(SE_SHUTDOWN_NAME, err);
+ execute_async(do_suspend, mode, err);
+
+ if (error_is_set(err)) {
+ g_free(mode);
+ }
}
void qmp_guest_suspend_ram(Error **err)