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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>
This commit is contained in:
Gal Hammer 2012-01-29 11:53:31 +02:00 committed by Michael Roth
parent 95f4f404e1
commit aa59637ea1
2 changed files with 121 additions and 13 deletions
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2
configure vendored
View File

@ -525,7 +525,7 @@ EOF
bindir="\${prefix}"
sysconfdir="\${prefix}"
confsuffix=""
libs_qga="-lws2_32 -lwinmm $lib_qga"
libs_qga="-lws2_32 -lwinmm -lpowrprof $lib_qga"
fi
werror=""

132
qga/commands-win32.c
View File

@ -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)