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S3/S4/S5 Long Run Test
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1. Why need it? D6 Z, |9 X6 W) k
# v# d2 W5 {- P0 RNB研发的工程中,需要跑很多的测试项目,其中long run S3/S4/S5就是非常重要的测试项目。而且对于测试结果非常看重,一般long run测试fail就没法出货。常规的测试方法就是10~20台机器测试S3/S4/S5 1000 cycle,如果fail率在万分之几就有可能要挂了。于是我就有了写一个long run S3/S4/S5测试程序的想法了。% L- T( C- P6 G; s& _
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2. How to implement?
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& A$ A1 q. q+ |+ c& ~# q心动不如行动,Let’s go!经过几番查阅MSDN,S3/S4的功能已经有些眉目了,可是如何实现S5 wakeup呢?猛翻SDK&DDK,狂试API结果发现不行,好像没有相关的API能做到这件事。最后联系微软的FAE,他们的结论也是如此。既然常规做法不行,那么我就另辟蹊径。我知道BIOS Setup menu 有个选项可以设置RTC唤醒,只要机器还有电S5的状态下也可以唤醒机器。那么BIOS是怎么做的呢?我请教了BIOS 得知需要做两个动作:1.设置CMOS中的alarm time 2:将chipset RTC_EN bit置起然后进入S5。系统在alarm time到达时会产生wakeup event,Chipset会送power sequence系统就会开机。通过一个IO port driver,完成上述过程后我调用API ExitWindowsEx(EWX_SHUTDOWN|EWX_FORCE,0);关机,我等的头发都白了系统也没有唤醒L,到底什么地方出了问题呀?后来我用SE.exe模拟上述过程,结果发现RTC_EN被我修改过之后,过了一会居然又被改回原来的值了,看起来windows在幕后做了不少小动作哦J,这样一来这个方法就行不通了,那么该怎么办呢?答案就是使用EC_BIOS去做,只要有电EC就会运行,那么S5时EC仍然在工作,所以只需要EC在特定的条件下模拟一个开机动作即可。思路已经有了那么该如何实现呢?方法有两种:a.通过IO port driver 下81 cmd给66 port,然后将EC ram index和value送给62 port,这样就可以修改EC ram了,然后EC在S5时检查该EC ram值如果非0就倒数计时,时间到了就模拟一个开机动作,从而完成S5 wake up。b.同样是写EC ram不过使用不同的方法,我们可以在BIOS asl code里定制一个WMI ACPI device,并且在该device scope提供query/set EC ram的方法,并且提供一个WMI ACPI的driver,这样应用程序就可以方便的操纵EC ram了,而且一旦完成这只driver就可以完成非常多的增值部分,比如我们可以写一个程序读写EC ram中的battery info;或者我们可以写一个读取thermal info程序等等。6 r( S( D- v% j# [
如下图1是程序的运行画面,该测试程序实现了S3/S4/S5的功能S3/S4在xp下面可以正常工作,而
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a& e" O% {* m0 u w( Xvista下无法唤醒L。下S3/S4是通下述代码实现的:
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3 P) [$ s2 Z" c |图 1
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: I5 Y6 R$ X) k x' s; g0 e4 w; J//hibernate and standby
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int- x# x# T$ U) d
CAutoPowerOnShutdownDlg::SetPower(BOOL
+ P# Y% h. r5 ]+ b7 VbSuspend,BOOL: o) X$ I- |! D8 m# Z; K Q6 C
bForce)
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{
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7 H7 x) A4 ]) } v Z4 STOKEN_PRIVILEGES2 ^* [( ^- M: C0 w
tp;
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HANDLE
0 h6 i6 W5 N( nhToken;
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/ a1 Y b( n1 [: B9 ~$ G. XLUID
3 I6 `: M2 S+ l7 j6 yluid;5 D6 \( v8 ]9 b. e w- s
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LPTSTR6 {8 k4 T, g( b7 A# m
MachineName=NULL;
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if(!OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES,&hToken
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return
+ ^1 E7 \3 n, W3 D4 U/ b" ^* h6 ERTN_ERROR;
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& v0 ?& u6 B, H# V5 o" `; \ if(!LookupPrivilegeValue(MachineName,3 T( y( }5 `! i% v( z( [. f
SE_SHUTDOWN_NAME,; a2 @, K4 c+ N: w. e2 O) M9 |) U2 O
&luid))9 k. a) N4 Q( Q; H1 u
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return
4 v8 a R- r% i- f) CRTN_ERROR;
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tp.PrivilegeCount+ z' M7 S" k! W: W
=
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7 u9 n* {. K) Y; A( p J! i: |# Stp.Privileges[0].Luid4 ~) r, |1 k4 f6 b$ o [
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luid;" O& a% W& }: f" }
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tp.Privileges[0].Attributes1 f% W% g0 D9 Z$ @$ P5 F4 S3 j2 m
=
' h4 A+ L& @- K) v3 j+ HSE_PRIVILEGE_ENABLED;
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AdjustTokenPrivileges(hToken,7 g7 {' q; O* ^! x; a! G
FALSE,
6 _! B/ W4 ~* E&tp,
/ L# Z; i# r& t) R; K7 g# L1 ~+ asizeof(TOKEN_PRIVILEGES),NULL,9 X9 c2 o% w- b& ^1 h! m
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NULL
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SetSystemPowerState(bSuspend,bForce);/ J% k) ]) W p
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0;
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}
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! S; |4 w! Y! T8 \, AS3/S4 wake up function是通过在下去的时候设置一个WaitableTimer实
8 W, z6 C" Q% H% h1 t现唤醒的功能代码如下所示:
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PBT_APMSUSPEND:, f4 O" l( c/ n- ~0 U
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HANDLE hTimer=::CreateWaitableTimer(NULL,TRUE,CString(_T("WaitForResume")));$ { {2 M* k: _9 a3 m
' [' {4 s" T+ h0 P! B1 C if(!hTimer)
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MessageBox(CString(_T("Fail
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waitable7 D: R" X* W. U- ~) {5 s
timer!")));
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}
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" D+ i8 R. F0 _# M2 mhTimer=OpenWaitableTimer(TIMER_ALL_ACCESS,TRUE,CString(_T("WaitForResume")));
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6 ]; M6 [: f% SLARGE_INTEGER
) i+ R, k- U) VliDueTime;
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9 y- j0 m6 T7 W0 L( kliDueTime.QuadPart=m_DlInf.m_TimeSnd *1000*1000*(-10);' m% ~9 N5 i2 `
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if(!::SetWaitableTimer(hTimer,&liDueTime,0,NULL,NULL,TRUE))
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{
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MessageBox(CString(_T("Fail
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1 \1 ]! N% G2 G( f+ S5 l" qwaitable
6 `7 }5 `8 x1 M! A, Q7 etimer!")));4 l5 _3 c9 c3 f# F n2 ?
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break;0 x7 _) O1 h: C3 U5 s, F* h* @! h* q
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}
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) f' d5 X2 C9 U' ibreak;8 m4 e* {6 W) }1 W7 B8 o4 E$ _
+ C: T; @- `( d; q0 ] ]最关键的部分就是S5 wake up了我们来看看它的实现代码吧,代码中最核" V* t3 I! }* `7 y1 Q
心的部分就是同连接到我们定制的WMI class MSI_System,然后通过' A0 B7 G' s9 V8 t3 X8 ^; f) S* n4 P, D
HRESULT PutInstance(8 [) o; r* X. D/ w
[in]) F% b7 r A- F
IWbemClassObject* pInst,
! U& v$ k% [, W: j, X[in]' X( V* a! p$ n& d" c% M/ g6 g
LONG lFlags,
1 n% G1 C$ F3 `& @[in]) g* G; k" a- |1 \7 H U( N; v
IWbemContext* pCtx,% d2 H4 w% `- n# y1 k
[out]
4 e$ e# ]* \. d1 B& RIWbemCallResult** ppCallResult);修改该class的System变量而该变量在BIOS的asl中被定义在EC ram之
$ U" g! x- c# b+ o% e) y$ P中的特定位置,这样就会改变EC ram中的值了。
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void CAutoPowerOnShutdownDlg::SetS4WakeTimer(unsigned char seconds), a( m1 [4 N8 G* r, [+ x
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{
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! W( d7 k" J8 V, [HRESULT hres;' f% G9 d( M1 r+ U- X" x$ x" @. L
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0 P# p$ \4 ]" E" m: @1 @// Step 1: --------------------------------------------------# H. y q J7 u9 a
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// Initialize COM. ------------------------------------------
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hres =
3 s5 s' S6 f- @' x( k3 V- cCoInitializeEx(0, COINIT_MULTITHREADED); # A7 I% a. U( W; l. v
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if (FAILED(hres))
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{
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7 y* Y0 D6 f4 O% x+ h& U% `cout << "Failed to initialize COM library. Error code = 0x"
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0 [& h9 E7 _: J; q
5 b* U) P% |; V; l4 [1 j0 b- X<< hex << hres << endl;
% X' M( s; J" d+ x, l return;4 W' f5 i, ^! M( o7 R
7 |" m/ ~9 ?& x. b+ n
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n4 X1 j$ T9 R, s( C' |}
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, @. B( Z i& T. V x" `// Step 2: --------------------------------------------------- }* w( R8 Q$ u1 ~" V" `
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// Set general COM security levels --------------------------
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3 @/ x" q. ~4 `' { j
# m2 w' s9 L+ N6 [( C4 x// Note: If you are using Windows 2000, you need to specify -4 x1 s* p6 ^4 X \
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% r9 N8 Y, W4 X& K$ L" i// the default authentication credentials for a user by using
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// a SOLE_AUTHENTICATION_LIST structure in the pAuthList ----
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// parameter of CoInitializeSecurity ------------------------
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hres =
5 ^/ x& `* X; F3 GCoInitializeSecurity(+ C& f: [2 L0 {
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2 T. R1 }2 J# \NULL, ( V! r2 [+ H7 Q+ l
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// COM authentication, K) @. V) s, C! s5 A6 i* C4 D
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NULL,3 I0 ?0 q8 ?1 U( |, c5 d- [' q: e
// Authentication services
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NULL,; O- f$ P" W X( r. D
// Reserved
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RPC_C_AUTHN_LEVEL_DEFAULT,0 z/ q$ P1 x8 \" o$ r4 d( k
// Default authentication
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RPC_C_IMP_LEVEL_IMPERSONATE, // Default Impersonation
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6 ], }) B/ Q4 {1 L+ wNULL,7 E8 b" E0 [, u9 N( A7 b/ p
// Authentication info
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! }3 A g- C% e0 U6 I2 sEOAC_NONE,. P3 V- n- ^+ b3 q1 i& ]
// Additional capabilities
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1 [ Q. D) I' l" g% j( X) D/ rNULL
+ o, W# b1 p3 j) @// Reserved
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);
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# _) ?7 ]8 C1 r5 J$ Eif (FAILED(hres))
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8 n. T$ g, s1 X3 Vcout << "Failed to initialize security. Error code = 0x"
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<< hex << hres << endl;) |# [/ b, T! e2 T2 H
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4 t: z6 H, d+ b" A `CoUninitialize();
; ?6 B; q i& ^# T+ E' n0 W$ y return;
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% s5 H- t+ |9 `4 T8 ]// Step 3: ---------------------------------------------------/ L" E4 @( ?" D: ?' I6 ?
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! J2 p* T4 B. Y, R/ j7 B// Obtain the initial locator to WMI -------------------------$ P2 Z' e' j; C5 g) X9 p
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W; S# n% l0 u T: L( h+ ~% YIWbemLocator *pLoc = NULL;
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hres = CoCreateInstance(1 |0 F8 x9 A8 m* D7 D! a
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2 |) t& f! a) K: d; _+ U( _CLSID_WbemLocator,
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0, 2 b) E; \, M- E1 e* o& U7 f: R
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1 D3 N. V7 V3 M9 m9 j, o, i/ ~CLSCTX_INPROC_SERVER, ! K. g. g( ]% M( u; w
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IID_IWbemLocator, (LPVOID *) &pLoc);
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if (FAILED(hres))- ]2 B% a. M" P9 K
, ]2 [8 c" U2 ?7 J, W
6 O- O3 T/ r. {" |; N8 f{+ X) l" y- F- ?: o" j0 d4 }& O% N
" F; h$ B: V/ F* Q' k# d- C/ g- }
) `0 b9 R J" c% D7 o3 Z- Ocout << "Failed to create IWbemLocator object."
7 B5 ~2 Z' D( A3 c2 ^
; v! N( z. V3 j4 P2 Q" X# l: @9 ~. Q- x
<< " Err code = 0x", ~7 i; T2 G1 A$ @' j
8 i& ]; t+ S# {' p
6 r! b! ]( e( b) W: y5 o9 \0 ^+ U<< hex << hres << endl;
) ]: p, Q" l8 O9 j$ p% k r9 s: U4 O* Y* k5 J- S6 l! N8 i
0 B5 {2 D8 k# V0 O0 _9 |9 @7 A% X0 xCoUninitialize();
* e6 i1 a5 i4 W- l
9 c/ G! ?4 { J$ y0 B8 W3 o% R( t3 p. c; a% {3 b
return ;
. T0 Q: U9 |2 M+ P8 c// Program has failed.
8 A! a4 _' M. M: T2 Q8 @
$ ], r! |9 x; O0 A+ ~, J
' _4 X ~" D& r6 ~- ?: G; ?! X* W! Z q}% S9 h% u" A, z- x" c
3 K" c5 F3 j2 W4 i
" K; t1 N- J7 o! C4 z2 z4 c
p+ T: X& I" `4 j6 B& `// Step 4: -----------------------------------------------------
. I, `/ [6 Y( T" h" }) U2 b' ~$ E% S3 {8 }7 I- K8 D- `, r$ I/ g
% K8 X+ ? I# z. ~1 e, s
# T1 ]/ \: R0 U( c0 H7 j// Connect to WMI through the IWbemLocator::ConnectServer method
8 o, e% O! o; t4 z3 [& @/ c, M6 b, i g: H+ f( g) h
7 K2 y& W" ]9 A: _& ~2 @
# t9 Y0 w5 Z$ t) V7 E5 dIWbemServices *pSvc = NULL;
" p* r; w0 e# U$ M% Q% b
/ g5 |- W @6 u: [6 g
1 ~- w5 J( I$ P6 c4 a4 ~9 Y: E9 b$ Q M0 B, g( ] V
8 f: k$ u3 R$ \2 n// Connect to the root\cimv2 namespace with
! }$ |2 X6 V4 V) g: O& ^9 L' I9 a, j9 ~' p S' B
- f) v: W! W( G; O& ~// the current user and obtain pointer pSvc# V0 P: M1 c6 P j
& g1 A' a2 q; d
3 S2 ]; T# G% O7 N* l9 i3 E0 k// to make IWbemServices calls.
5 C# W7 Y# x8 C0 e; }
9 E3 {* S% E* X3 V& j# P
5 d7 k* j3 ?5 V4 N K% Qhres = pLoc->ConnectServer(( o" ?; z$ l; K4 C
4 d( m! n' M2 z. W; b# v
; m% L4 [3 C; F# V
_bstr_t(L"ROOT\\WMI"), // Object path of WMI namespace j% I/ [+ J" U- V3 |: m6 e, h+ |: L
1 ~5 A0 n. e6 I) v# V, ^
S$ ]& h- [( nNULL," }# B( r& K) Q( b) P% H! Y
// User name. NULL = current user
& @% r$ Y8 z. L
+ b. W% O3 Q3 ~% f5 _0 _% M
! X x$ |# [/ M( B: M" y3 RNULL,
I! ~& S1 b; v; e: h8 Z& J// User password. NULL = current
3 G6 d7 Y/ h' Z2 W4 `/ }$ R( C4 H2 |% @; p9 S
5 s+ a" E/ b3 ~2 m9 ?
0,) u( v( v' ]/ V6 x2 m( X( B1 S
// Locale. NULL indicates current
7 \& L) s/ v4 b7 I2 l0 f# E/ U2 X/ m! E, Y! Z" A7 A0 V% k, y3 }) \. h
. b" h D. E+ Y) vNULL,
6 ?3 m, G% @0 f7 a- o; w// Security flags." u. g. i8 ~! a
2 H5 G9 u) a6 h$ x; }7 c8 o7 o* O$ w% P* q: T9 P/ N
0,, B3 B& w% m! i& v0 L8 H& @
// Authority (e.g. Kerberos)' ?2 |7 a' @' V ~: f7 a1 i
: N; Z; k5 E7 m, ?1 f! p
8 P3 s5 Q- r% K+ {9 ?4 |8 i1 p
0,
7 l/ J X* g8 g' q, l" g$ N9 ?// Context object % h% _# z$ z7 T1 c6 P
4 t" y" C5 D. b- ^* \
# W* \6 o( F6 S& n: s
&pSvc
( ]: Q2 i9 x, S/ J// pointer to IWbemServices proxy, N/ s S2 k0 e6 O
* |0 _0 H; ~% l( S+ p. R$ y! k
+ t8 O+ a2 f0 u8 I C);4 G/ {$ s0 N; c/ M {( F: I
6 ]: U# }! B. E# y4 W- s0 b7 q6 ^ u
0 |1 ?) q. I$ J9 o! i8 E5 i1 M
7 b$ S- i2 A2 b- ]
if (FAILED(hres))
5 ~* A+ g5 l) _+ b# D' {, W
/ \0 R4 a6 Q7 i# s u; ]1 h& L
{
, q! I5 x- z' Z/ [4 _4 r- X$ M7 _9 H! E4 j) D& |# ~3 C* u1 K+ ~
, z: ?" d5 d8 U. ?$ [6 n9 J! [
cout << "Could not connect. Error code = 0x" - i) L0 [, T- x5 v/ ^3 |
~( K' H) o1 A# I" n+ n b" O4 d
7 R/ J% A4 F: \' I8 v1 e<< hex << hres << endl;
5 G: _% j9 ?5 @$ o8 \! h7 I2 y1 i% B* p4 T
" P) f/ H: N4 y' U+ a# m# opLoc->Release();% O w* N; i5 I
9 v, z2 k/ O% D" ^! l
" h6 H( \" S, r9 `* R# a) y! e! s
/ T, H5 l$ Z% f+ e# g0 Z3 gCoUninitialize();1 z& p) t7 B- n# Q5 D! {# u; ~
$ ` d9 | S3 r$ l O c. k r
4 x4 Y2 E% m5 l" E1 T" i& H1 o8 G3 I; L9 X9 O: j" I0 ?
4 A2 H6 A/ G. I
return ;
" y* i" t$ O4 G7 f// Program has failed.* S; i6 S) L3 Z7 M& o4 y
+ o7 L \8 O9 p# M+ H7 p( G* v
2 b; ]1 {! R( c3 M}) I2 g4 n" [) o8 H* b6 C6 J1 |! F
+ j1 L& Y6 |1 l
/ i9 }/ l& ~9 o- {
. i0 ^+ i4 [( i8 j; vcout << "Connected to ROOT\\CIMV2 WMI namespace" << endl;) u+ _0 f$ U/ o: X8 K* E
; ^. `1 B; q; D! r* V% V1 v
4 W/ j1 r, e1 w0 x8 D# E! x5 O# ` `% ^" R: J( f X
* G: R6 u$ P, t4 X( H& G% g+ A
// Step 5: --------------------------------------------------0 N! a. D U5 o2 v
( h4 g9 ?0 \: J
6 P1 T* T& ]% X- y& H+ |7 v// Set security levels on the proxy -------------------------9 l& V1 S' E6 |5 H3 n D: \) |
$ m3 u) t/ ?2 l! f
c) W% M" V( o/ N
/ g! I8 T, v g' F5 c2 i3 khres = CoSetProxyBlanket(7 c1 ^' P: i% ~6 o3 q- c( @
8 e2 t P1 b: I3 t: X. _. v
9 z0 q) C" b+ h- h( P3 a0 ` |& xpSvc,
# S6 d5 u; L! q, ^$ `" a2 E// Indicates the proxy to set
! i4 H0 j& u5 n3 b! t6 P9 g1 e& F1 B+ I8 K' w! b0 m; q+ L
4 {' D) z' D; X, r4 mRPC_C_AUTHN_WINNT,7 s+ a# k0 E$ ]! W0 G& O" d
// RPC_C_AUTHN_xxx0 A$ L: _8 j- w6 z$ H
4 I5 v- `- D( G4 z$ v% O0 C. p4 I! I5 @0 F; b! h" E. p$ q( c
RPC_C_AUTHZ_NONE,
# n7 C' Q u1 r( A& I// RPC_C_AUTHZ_xxx3 E6 v. }0 f# u; ?3 X% r' a1 [
( ~: h5 k% i' j
3 b' z/ }2 }6 G0 |1 b. T7 ONULL,, [- T3 j1 ], t; I: D) m
# {$ h* v) n" ^# O: [6 _
// Server principal name - e5 u8 R# f6 {
( ~4 P2 k& q" |3 R# s
- T2 C9 a2 Y: [0 U9 R/ z9 a
RPC_C_AUTHN_LEVEL_CALL,/ x5 ^" ?7 ~% E
// RPC_C_AUTHN_LEVEL_xxx ! H! I |6 h2 b" n
. M( W, t8 a, ?/ v
T4 g) P3 l, S7 m2 F/ |
RPC_C_IMP_LEVEL_IMPERSONATE, // RPC_C_IMP_LEVEL_xxx
6 Z# p6 V' ^% B7 Y3 B( l- q- E M" s h A* y+ r
; x K$ m( S x% `
NULL,
2 C4 l2 l6 N6 P5 |// client identity
0 l0 ~9 e! _8 P1 U, d2 [' h0 f2 h' G! s# K
( }0 D6 E6 e2 [2 ?6 @
EOAC_NONE) Y8 k- s* ~8 G9 z6 k
// proxy capabilities ' C6 o* [+ n2 M( u$ N* t, [! a
' k1 r8 d" Z( S
0 D: S: n+ e; B( w5 \7 o C' v; e);7 o' J. Q: g9 G M0 C* a4 x# I
6 H& \% i9 z& w) J! a6 p$ R" r
, ^2 E+ l4 @) @+ r' ?. n% i6 Y: D
/ K: P6 P8 w0 _( |$ k" {9 [2 r
if (FAILED(hres)). u2 X) `# w1 D/ W8 \, K: T* e4 v
8 H) h( J2 P4 p. s8 r: E* y, A- h
/ {: w9 x% Q7 j3 C9 H) b{2 U! m' m& D4 p) c9 x4 E X
1 ~* f, c7 M( S
- f" b; X. T9 Z8 K! G; qcout << "Could not set proxy blanket. Error code = 0x" / T9 N- s0 ~" F4 H9 M4 j! z1 O7 ]' ]
8 B- A! P2 ]% B* O- k( I6 V) ]" G% L `! _
<< hex << hres << endl;
4 s2 f& O3 y% g0 K0 ^ t* V7 b) l( G3 U/ B5 z4 @- Q
: ?7 T; w* l0 j- y$ G* o
pSvc->Release();4 g6 J# ~5 s" }: w7 h9 M4 @0 \
7 T; ^; n; W' N$ Q4 h l |' y+ U
) l" f4 C m: H! ]' N4 w6 M. i! ?pLoc->Release();
) H1 @7 ]6 `. L1 R: Q
) L; C9 ?5 u* k5 D8 `) a7 V5 [7 b, R/ Q% M. G+ v4 b* p$ O+ W% W
3 r1 ^, E L1 R% L. V7 ^' H! V$ h
CoUninitialize();6 o9 m' a5 \% f2 n
+ w) f5 Y. Y% L& r' a
& V2 T9 D# D/ p9 Z0 B: L
return ;
4 ]* y) F: y5 }' H// Program has failed.
/ o& h# q. f. x/ ~$ {- c: V: y1 i
% w. J0 `0 V- `
}
- y" T( _- I" v0 a2 M& `7 [6 o+ ?9 U! D+ p# J
' d- x$ J- y- B' v
9 j0 \" _. B: q6 l+ D7 \: E' w/ p// Step 6: --------------------------------------------------
( c) c- w1 F% e9 _& Y6 Y
8 l9 T1 I3 C$ d5 L$ `& h) g+ B: d% P# {
// Use the IWbemServices pointer to make requests of WMI ----0 f1 K1 V) S" W f
' T" @3 ~. m h* U: | ~9 B1 G! d! y, ?# d* c4 D
/ U, y5 q6 r! D V/ i9 c" [// For example, get the name of the operating system9 a) k: W* D/ K. ^% R& ~
% N( x/ }. U* V* R% t
) Y5 J/ \+ }) H @IEnumWbemClassObject* pEnumerator = NULL;
4 l- O$ ]9 a/ l7 t
, N1 @$ i) v7 Q
' T, o2 ?) T( E: F$ E9 P7 h' I P" @5 e) \5 {% `3 V
hres = pSvc->ExecQuery(
: r0 |) H2 I( n4 a+ Z+ g
; k1 q! f- }) u2 Z4 F' ]( f( {% x( f9 T* \* m5 D' N
bstr_t("WQL"), ; m! Z' W( Z, x8 W
1 c1 |; I* t- a& O% H# y, ~3 L. F# {9 {# u
bstr_t("SELECT * FROM MSI_System"),
q3 c6 T+ Y \% V( O- K9 m- K4 i, d% V m
- `. m7 T2 j/ k( i2 n, bWBEM_FLAG_FORWARD_ONLY | WBEM_FLAG_RETURN_IMMEDIATELY, ( l* O; `7 U) U& ^
8 w6 o: c4 x0 i5 P& y6 K) }2 [' A$ {/ E4 Q; B- ~2 p9 Q0 R
NULL,
2 S) c) Z7 x- q) }( }: E- p0 S" E8 M* u& ]
3 Z9 J! [3 I+ t5 ? U5 b o&pEnumerator);
5 c: R: ]. w, ~! J4 [/ G4 E) `+ L, d, d& ~. P Q9 a" A$ ]
- p+ h+ ~ \ ^3 j& L
! [( |1 U5 Y1 i4 s0 z. @) f" l
9 }" C' Z R. m2 ^' ~if (FAILED(hres))! ^) g* Q/ h3 w u5 L4 Y! k* C
" l1 E/ v- \7 K# K1 ~. [
1 {% [$ ~# D5 v+ t" j{4 a( @: [1 }5 z. ]
. [7 n+ y, _4 F; ]: ~. S4 N4 O1 _
) D2 w& ^$ `5 `3 Y* A3 g1 fcout << "Query for operating system name failed."; P: O- M. |. T# }/ A F% |; `
9 N& n: v, R8 w9 J" ]
: c: |+ X- C# ]& ^& K
<< " Error code = 0x"
* P& n# K* p5 W$ N" S( h4 @3 {$ Y( h9 ]! @% R- c: q+ e O& V
4 G7 _: a( e6 |5 e<< hex << hres << endl;
2 d+ ~4 o; O' x( k
3 `6 V7 m5 V' M! a f% T
* o8 o! e/ m* M& K! cpSvc->Release();
) o7 J% \% L* f+ J) N3 i' X. H
" V; P$ x, m( i- C0 R/ t5 ?8 S+ K# ?; ?' O3 Z
pLoc->Release();4 B$ n j9 m1 X7 i
& n3 k0 B- N; m1 T% ?& o$ y5 r" \$ @, }
CoUninitialize();
6 X: R( [+ P R
/ g p- h5 ]. r# u7 T& ^* o2 s% e# Q* O; y3 e3 O
return;
1 k% d) r$ @& T5 l" e; h: R3 h2 n6 W. |4 N
// Program has failed.; h, B1 q9 Z% T5 w5 ^1 K
# e4 p8 }( r+ B
$ X- L$ \, w# P; ~
}& x1 a9 G M. e9 _
0 q# Z6 ]( ~5 ~) Q
; `. m5 C% a4 K6 Q. A) b
6 q7 E0 Y. z% J/ u& p// Step 7: -------------------------------------------------1 g- y2 _+ D7 h5 R9 a
1 y, K" q/ q' S
4 O; T8 d1 r. M- x1 i8 L( U a// Get the data from the query in step 6 -------------------) H6 F5 [4 b9 k3 y9 M; _3 f
5 E/ g1 k0 X) |. v; h4 j% F' U% @( I
+ l' X+ o! [8 p/ G$ x& G. s6 Q, T* \3 _% y2 Z
- j7 } o2 p: `6 c7 f
IWbemClassObject *pclsObj;! n3 d% Z1 W+ N* S1 t
% g) r( S7 A6 F# Y- c6 ~" B4 P4 [" ?/ Q/ o+ Q) i
ULONG uReturn = 0;7 O* h8 i# v+ f; \/ r0 b& n/ j, z
% O5 r5 O# G7 N. p( o& u. g) q
4 O4 D( ^4 m3 Cint count = 0;# ?+ B& U) Q- ^4 h; K' _5 D0 t- g
' L- ^* P4 ?" T4 n8 m- l" b8 b
# ? `6 a4 s' B0 ^% {, Vwhile (pEnumerator)- X; a" d' A" j
' ~" a6 H& I* l5 w" g6 {4 y: Y9 t {& O$ w7 \2 I. r" W8 Y( p! m, B
{5 c4 Q Z5 B6 g+ f4 _7 {
6 y5 B0 k* k: z" C$ L
2 B: v( V( ?6 {; M2 \; f7 k2 Y1 x+ Q, u4 c. l! ~) P
HRESULT hr = pEnumerator->Next(WBEM_INFINITE, 1, ; u0 C6 i8 z: `0 K: M# Q
& n4 K5 O+ J8 f! ~' ]
. x+ P' H9 N- K. [7 E, M I f" N
, E7 y2 t/ [3 e' d" i&pclsObj, &uReturn);
9 d; R7 z: N0 @8 R& E- T( G; t
) {! Y) t* m5 p$ d
w) _4 o' ]: D9 l; i
0 \7 ` ]; c- `/ d8 \0 R+ s) E, b8 y0 @ H
if(0 == uReturn)
. B' ~: E P& f4 Q" i6 t* V
' c0 h5 F2 b6 D/ k& b
+ I5 i: K5 r1 x
4 g7 z5 Z/ F0 @$ b{
! ^+ m! A$ e" P, d0 }
9 O( w# ]8 z+ J0 t3 R8 \4 O$ m# C: s8 ]. i" I W: c3 {, k$ M
$ f! A: R: W1 @ O0 Y
break;
) V0 C# m9 I; P% e
. c( X5 A0 W! c3 a L# Q) j( D$ t* ^7 `: {
( s. j& r0 W5 L- R1 K9 v. |; H- g
}
2 v( e: R0 b! z" B( c' X' Y$ Y
if(++count == 3)
. Z8 P3 e) g" H4 w) Y9 E# s# f2 Q" M( k! Q0 s& ^
{
0 B. G$ A+ g1 h* t
b6 P- W/ @- W0 a3 k- YCString tmp;( a7 I6 l- p& g- z) I, |
% \9 b$ @ O- d; w# z$ U: ktmp.Format(_T("%d"),seconds);# g& g( ~* x: |
/ U) g; G5 @$ a% p0 J
7 a3 |8 a5 W" @% x// Set up the property value.
) I- G5 G. k/ ]/ w3 K7 Z8 ^4 C6 x! ] {& B- B5 t
VARIANT v; ' p: d( W$ G: v( m+ {8 K
; j% P( v$ p- \! Z. IVariantInit(&v);
6 _9 f# y) E2 N; t$ M. Y. m8 Q: a5 S9 D* E. ]
V_VT(&v) = VT_BSTR;, O; z0 C" q( A: A9 i% n
8 B# y% {! ]4 K3 K$ I
V_BSTR(&v) = tmp.AllocSysString(); // - decimal format, not hex
5 D8 L# y& j6 j
5 q9 s1 Y7 T0 E* b9 G1 m% H2 e2 `1 {( i! H
hr = pclsObj-> ut(L"System",0,&v,CIM_UINT8);
" H0 a: x9 ^ _8 @7 R0 S/ r // Clean up.
$ m3 I- K, s7 V$ u" C" z- h) d# x1 R' l7 u2 h" I: Y0 Y$ ~, q
VariantClear(&v);
' u7 f3 q& e+ o8 G! P) V( _6 a$ v1 j' U
; c% q9 `: C5 S% C: W
if (hr == WBEM_E_ACCESS_DENIED)+ d2 G( [3 `8 }# H6 w
0 \7 [7 v/ @% p1 p8 _$ K f{ I" Q- `' R" `
. G( {* a e+ Hprintf("WBEM_E_ACCESS_DENIED\n");
( Y1 t" o: [1 ~) P) v( z+ h. t- C" p! S0 X
// Processing to handle specific error code3 }6 L9 l/ s$ d z# b5 |! C
! z/ T5 C2 w1 R3 R
}
" e2 ~ E3 `3 [2 L% i* v else if (hr == WBEM_S_DUPLICATE_OBJECTS)
8 ^4 o) E% K' r) G+ i1 C
- a ~7 N7 G1 T5 [* C% I+ D{
; P$ \% V, v, f, [( v9 c$ P N) K$ o0 k, V0 Q
printf("WBEM_S_DUPLICATE_OBJECTS\n");
" R( p0 R. z' K; j- Q: D // All other cases, including errors specific to COM( H" p: | u' B& `7 d# V
# ^) x& f; s* Y7 }. A# f$ J7 a4 M
}- B/ H- U" d- K; C
else if (hr == WBEM_E_INVALID_OBJECT)
3 L( c. G* o/ n/ J6 d N B! y* R6 l
{5 S4 h7 M8 f# [5 C1 C# G) c- y
) Q; Z( B' _$ s6 f) O! l3 A
printf("WBEM_E_INVALID_OBJECT\n");. Q0 [# ^1 g# U) n& @* b$ l8 q; u3 e
: ~9 \ t! ]$ ^9 U# m4 ?
}
' W; c+ w h6 d4 l5 ?) t else if(hr == WBEM_E_INVALID_PARAMETER)
$ ?8 a3 a$ `; x2 T- l A0 c
3 h% V( j) ^) y* z6 T+ I L( T{
: f2 V1 s& c- }2 ~9 I$ T. G n- `. B" z6 |3 i! [$ S( ]7 h& |, F
printf("WBEM_E_INVALID_PARAMETER\n");( H8 _; l" [, n- {4 E
2 c v0 r7 o( B}) {( ?/ F5 j! Y6 p0 Q
else if(hr == WBEM_S_NO_ERROR)
# n$ A. {% S; t7 G0 w! x, I
4 X6 V( g6 o! P+ K F{9 z# T" k# j- G2 w. P
' j' z$ ^. K! @: ]8 n% q
printf("WBEM_S_NO_ERROR\n");
3 }) V# [$ L w4 d' x# y, H9 I3 t5 l, R- I
}& u* g' `4 z: A% v9 t
else # h+ W# _: }2 b; R( ?' `, Q
# q e5 y! u- C9 A9 l5 m3 C% Uprintf("ERROR:%x",hr);9 k" p7 ^3 ^! U
% e3 m# R; Z/ R8 w/ s3 ?
# X A' N J" J2 c3 @0 XHRESULT hRes = pSvc-> utInstance(pclsObj,WBEM_FLAG_CREATE_OR_UPDATE,0,0);
5 b2 b) B2 Y5 A9 t5 e& l3 W
' ~" F; Q7 v( ^& @! \) Y) a( w; {/ ^! b$ U
// Check for specific error and status codes.
' f2 {5 p+ B; r# p. R. k" p9 Z$ j if (hRes == WBEM_E_ACCESS_DENIED)
; I( A3 t6 t; B4 O' P; `
( [7 C) N9 b. r) l5 o# q{
! W- A: L5 q4 n7 T0 o/ Y
$ w7 w: R2 K, S3 ~0 mprintf("WBEM_E_ACCESS_DENIED\n");- \% R9 Y7 Y9 Q2 I; s. o1 V
# h% O" p$ e% `8 Q# p/ G2 U: @+ m' { // Processing to handle specific error code
% t* f: T; ^- @( N( F( c7 x
8 ^+ F7 ^/ ?' P2 n+ s, h}( R, w2 E% _: w w
else if (hRes == WBEM_S_DUPLICATE_OBJECTS)7 K9 Z! Y: l1 O0 s/ p+ v
7 Y* V9 C6 j5 V, W* D# a( X
{. O- f+ P: e) J
( V( Q! w" p5 u4 G; M
printf("WBEM_S_DUPLICATE_OBJECTS\n");
) Y& N3 }. i* @4 w% l // All other cases, including errors specific to COM
) [) @0 y6 p! ~! z1 Y+ v9 [# e% Q& S4 _* [+ N/ X3 j
}4 S/ `: a5 P# N+ l% E6 u# B- F
else if (hRes == WBEM_E_INVALID_OBJECT)7 f* n4 Y1 f: |
! e3 ?4 l7 d [8 v8 ` G3 w
{* X( M6 A* Q) n3 ], n3 M3 y
& w7 M" o9 ]" z- A, a. u. N
printf("WBEM_E_INVALID_OBJECT\n");
$ q Z. p3 @# l/ `* S/ N* y- j- [/ ?& v
}
s" r1 |. d- p, V4 G3 Z" G- [ else if(hRes == WBEM_E_INVALID_PARAMETER)0 {( ~' ?: D6 R2 X9 d! x
: U8 p/ v- e7 ]' J{/ V' Z; c1 F R& v, F/ O
: L9 Z0 K8 H9 N/ W
printf("WBEM_E_INVALID_PARAMETER\n");
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else if(hRes == WBEM_S_NO_ERROR)# f: A6 T6 l+ I4 M2 D& T
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{
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printf("WBEM_S_NO_ERROR\n");
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}
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// Cleanup
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: a' m0 k2 w# L// ========. b9 _3 D6 _- Q6 b8 a
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9 v. ?. Z, s6 }9 N7 m: zpSvc->Release();
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pLoc->Release();' r& y+ R; a6 D% g* T* r g
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7 y ^# _/ |; ]) }9 YpEnumerator->Release();
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pclsObj->Release(); Z' V9 ?- F+ W+ W w0 {1 X5 q3 b
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( f: j d0 U- |8 _CoUninitialize();& E/ ]! R' ?- a& g6 c0 [1 O1 \4 e+ j
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以上就是该程序实现的全部过程,完整的source code可以在附件下载。S5 wake up使用了WMI ACPI,
; B; I4 {! y9 I* t5 l" a该部分比较复杂,我在后续会发一个WMIACPI的系列,完整的描述WMI ACPI实现过程中- P- F! k& l# M, e
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BIOS,EC,OS,Driver分别扮演的角色。! U% R9 C& c# q9 ?6 U: P% l7 m
% y( a& z: k o2 b" j, Z( Jthat's all!
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Peter - p/ Y7 N* j8 v9 Y3 W
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[ 本帖最后由 peterhu 于 2009-6-3 14:25 编辑 ] |
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