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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 <[email protected]>
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Original file line number | Diff line number | Diff line change |
---|---|---|
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@@ -5,12 +5,15 @@ | |
* | ||
* Authors: | ||
* Michael Roth <[email protected]> | ||
* Gal Hammer <[email protected]> | ||
* | ||
* 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 | ||
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||
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; | ||
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||
if (error_is_set(err)) { | ||
return; | ||
} | ||
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||
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; | ||
} | ||
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||
priv.PrivilegeCount = 1; | ||
priv.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED; | ||
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||
if (!AdjustTokenPrivileges(token, FALSE, &priv, 0, NULL, 0)) { | ||
error_set(&local_err, QERR_QGA_COMMAND_FAILED, | ||
"unable to acquire requested privilege"); | ||
goto out; | ||
} | ||
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||
CloseHandle(token); | ||
} else { | ||
error_set(&local_err, QERR_QGA_COMMAND_FAILED, | ||
"failed to open privilege token"); | ||
} | ||
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||
out: | ||
if (local_err) { | ||
error_propagate(err, local_err); | ||
} | ||
} | ||
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||
static void execute_async(DWORD WINAPI (*func)(LPVOID), LPVOID opaque, Error **err) | ||
{ | ||
Error *local_err = NULL; | ||
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||
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); | ||
} | ||
} | ||
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void qmp_guest_shutdown(bool has_mode, const char *mode, Error **err) | ||
{ | ||
UINT shutdown_flag = EWX_FORCE; | ||
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slog("guest-shutdown called, mode: %s", mode); | ||
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@@ -41,16 +97,9 @@ void qmp_guest_shutdown(bool has_mode, const char *mode, Error **err) | |
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/* 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); | ||
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||
priv.PrivilegeCount = 1; | ||
priv.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED; | ||
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AdjustTokenPrivileges(token, FALSE, &priv, 0, NULL, 0); | ||
acquire_privilege(SE_SHUTDOWN_NAME, err); | ||
if (error_is_set(err)) { | ||
return; | ||
} | ||
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if (!ExitWindowsEx(shutdown_flag, SHTDN_REASON_FLAG_PLANNED)) { | ||
|
@@ -124,9 +173,68 @@ int64_t qmp_guest_fsfreeze_thaw(Error **err) | |
return 0; | ||
} | ||
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typedef enum { | ||
GUEST_SUSPEND_MODE_DISK | ||
} GuestSuspendMode; | ||
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static void check_suspend_mode(GuestSuspendMode mode, Error **err) | ||
{ | ||
SYSTEM_POWER_CAPABILITIES sys_pwr_caps; | ||
Error *local_err = NULL; | ||
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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; | ||
} | ||
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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; | ||
} | ||
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error_set(&local_err, QERR_QGA_COMMAND_FAILED, | ||
"suspend mode not supported by OS"); | ||
out: | ||
if (local_err) { | ||
error_propagate(err, local_err); | ||
} | ||
} | ||
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static DWORD WINAPI do_suspend(LPVOID opaque) | ||
{ | ||
GuestSuspendMode *mode = opaque; | ||
DWORD ret = 0; | ||
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if (!SetSuspendState(*mode == GUEST_SUSPEND_MODE_DISK, TRUE, TRUE)) { | ||
slog("failed to suspend guest, %s", GetLastError()); | ||
ret = -1; | ||
} | ||
g_free(mode); | ||
return ret; | ||
} | ||
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void qmp_guest_suspend_disk(Error **err) | ||
{ | ||
error_set(err, QERR_UNSUPPORTED); | ||
GuestSuspendMode *mode = g_malloc(sizeof(GuestSuspendMode)); | ||
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*mode = GUEST_SUSPEND_MODE_DISK; | ||
check_suspend_mode(*mode, err); | ||
acquire_privilege(SE_SHUTDOWN_NAME, err); | ||
execute_async(do_suspend, mode, err); | ||
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if (error_is_set(err)) { | ||
g_free(mode); | ||
} | ||
} | ||
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void qmp_guest_suspend_ram(Error **err) | ||
|