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S3/S4/S5 Long Run Test 2 c0 {0 o+ N$ ~
/ J( Q( t6 |& s; n; W1. Why need it?
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" A2 u( r* h; ` Q# U6 b2 xNB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。+ G& x5 i, b, g5 `( g$ ^8 w, M
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2. How to implement?
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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。
4 F" D7 @0 L! u! Z- Z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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vista下无法唤醒L。下S3/S4是通下述代码实现的:1 v6 W) j! y, Y3 w2 S; J
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# w0 v) X7 }! n+ ~3 T图 1
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% |7 W5 x. y1 J- |& I# L" ] V//hibernate and standby
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CAutoPowerOnShutdownDlg::SetPower(BOOL4 ~( u2 I" p% f$ r+ R7 ]# z) \0 }
bSuspend,BOOL
! v" H: H; S0 Q/ U- N MbForce)3 W( E6 \/ G' Y, e
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TOKEN_PRIVILEGES6 p$ f# H3 Y( I- S* x& z- b
tp;- t" ?6 h+ g4 ^' @3 f+ r
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$ k7 S+ i& ~. _1 u- S/ rHANDLE
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1 l8 W% O* D0 ^7 ~
LUID
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LPTSTR
9 ~. v, |0 l3 YMachineName=NULL;
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" x% Y8 V4 z2 N, ^2 q9 ^1 | b if(!OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES,&hToken5 \9 }/ j& I: V6 w
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return
5 Y N2 D* t, [5 |3 L `0 i0 ` PRTN_ERROR;2 Z- H! E1 y7 e* |
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if(!LookupPrivilegeValue(MachineName,: V" T/ P# g0 J3 N
SE_SHUTDOWN_NAME,
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return6 Y, [6 F$ T* J
RTN_ERROR;
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tp.PrivilegeCount
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; o+ `( a k' \% otp.Privileges[0].Luid# l% T- q1 \2 w% G2 X
=
$ Y1 s( q" s+ j2 @7 E) Pluid;7 ]% P% k) c2 L9 d& N
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tp.Privileges[0].Attributes
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SE_PRIVILEGE_ENABLED;( N9 ?/ l& L9 y6 k
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. m, d; e4 n5 S1 U2 R) mAdjustTokenPrivileges(hToken,
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&tp,! U) K& h# k3 b0 u; B/ ?. p
sizeof(TOKEN_PRIVILEGES),NULL,1 n! d% {) [/ X: z& m) S
- B7 T; d9 ^) S# a2 ENULL
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SetSystemPowerState(bSuspend,bForce);" e) E, {9 ^! L, r; X7 ^
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return
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3 }. S3 T" V5 ~5 T* S/ mS3/S4 wake up function是通过在下去的时候设置一个WaitableTimer实$ Q' L# h- k* z$ b4 J$ c
现唤醒的功能代码如下所示:3 Y2 L2 l4 \- r+ [
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PBT_APMSUSPEND:( Y" v: ~5 ]! u0 w" M; K1 w! ?% b
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HANDLE hTimer=::CreateWaitableTimer(NULL,TRUE,CString(_T("WaitForResume")));2 w9 h( f3 J" m7 }% p
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if(!hTimer)
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{
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MessageBox(CString(_T("Fail
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: a1 I( A8 K2 g. q# t! W/ Ecreate
. k' |7 K {8 \( m3 u+ iwaitable
! `# l i4 T2 T( N3 S( @. O! Etimer!")));
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' F7 c, _# b4 {) D- XhTimer=OpenWaitableTimer(TIMER_ALL_ACCESS,TRUE,CString(_T("WaitForResume")));, N( U" R1 t$ ?5 T
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6 s/ X7 ]) G# K0 n6 X4 RLARGE_INTEGER
$ b- ?/ W( b1 A# l2 }' sliDueTime;$ z( O! E5 w* B: q+ d
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. v& A: O+ l$ L) @6 f+ X OliDueTime.QuadPart=m_DlInf.m_TimeSnd *1000*1000*(-10);
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4 i7 R7 s4 ~8 I3 l- F; B% h if(!::SetWaitableTimer(hTimer,&liDueTime,0,NULL,NULL,TRUE))" ~2 _; L6 ]- g& v0 c
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{
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MessageBox(CString(_T("Fail% m0 L% C8 f6 b2 M
to& x S: z5 e( k7 L( x( U
set! O' N* B; ?8 A" O- n/ t
waitable0 t1 R) E* M2 {" h+ p3 ^
timer!")));) \* f" }; S2 k# J$ Q
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break;- m) ]* K) F# r* ?7 g/ O6 d
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8 X6 \* A8 t# E, ^# h% v1 zbreak;; M# n4 H& ]+ X
* o" M: [( g: V/ t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$ e* c m( U8 o! u/ D# q" {( I0 @! W$ p
心的部分就是同连接到我们定制的WMI class MSI_System,然后通过
: K# l( O3 G% `HRESULT PutInstance(9 x3 Y" l$ R; t* }
[in]
2 c& _+ m/ D2 h3 [& pIWbemClassObject* pInst,
5 z# G3 k8 K# y" c, G0 ?# u[in]
3 y% @; T, f; D$ G3 f; D2 ]LONG lFlags,5 `& I; H( d; N) B; _" J+ L' Q4 `
[in]
6 u7 x7 \, {& Y: w- H4 zIWbemContext* pCtx,% w% q: M4 |; B) j! D* s% G
[out]0 [) N6 H3 E4 m% C. `
IWbemCallResult** 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
2 {! L6 L( i2 R$ }1 |中的特定位置,这样就会改变EC ram中的值了。0 P7 N. L9 |/ ~7 P8 |4 |% B; {
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void CAutoPowerOnShutdownDlg::SetS4WakeTimer(unsigned char seconds)
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* e; b1 c2 i+ A2 x# S. Q" k pHRESULT hres;
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// Step 1: --------------------------------------------------
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// Initialize COM. ------------------------------------------
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hres =+ r: P M1 J T
CoInitializeEx(0, COINIT_MULTITHREADED); 1 ^/ O' [7 @6 z2 C/ e6 W
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if (FAILED(hres))
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8 ?% T8 L6 P$ y2 ycout << "Failed to initialize COM library. Error code = 0x"
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<< hex << hres << endl;
( e: u5 H& W0 _ return;
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3 Y% o: L8 A0 ~0 _' x// Step 2: --------------------------------------------------
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, A* D. G: [5 G' c// Set general COM security levels --------------------------
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5 b0 v+ c0 V5 k* @1 _// Note: If you are using Windows 2000, you need to specify -
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// the default authentication credentials for a user by using
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5 W3 r+ B" S- x. Z5 S// a SOLE_AUTHENTICATION_LIST structure in the pAuthList ----
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- O, D2 V5 _) L( ^" i// parameter of CoInitializeSecurity ------------------------
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1 _1 z1 ^; f5 U1 I9 v; d
0 R4 _9 s, x3 Z. `. Chres =
1 x) C" X r8 O0 I9 U+ ^7 LCoInitializeSecurity(
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NULL, " c! y$ [+ O2 p3 T" W
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-1,) W" j0 T, T$ b* a! A
" f! `% @. A. [5 v// COM authentication
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& T$ n8 f6 w( Y. sNULL,
3 B8 e8 }; m' |// Authentication services! X- x- W0 \/ w' s8 R
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NULL,
3 {- ~5 u+ Z; ]; f* g// Reserved l% H2 l7 x) D+ z8 v) r
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& Y. H) {! i5 y" nRPC_C_AUTHN_LEVEL_DEFAULT,
$ X8 E; j( T1 u9 i) x7 E// Default authentication d- j( ]1 }5 `$ T
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RPC_C_IMP_LEVEL_IMPERSONATE, // Default Impersonation: p, Q; S4 V! P
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NULL,( {5 r# h6 ?: D! U* G3 G) d% o" E
// Authentication info
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# j0 s2 t- R8 ?6 o3 @EOAC_NONE,! C1 s3 m* Q+ j: _8 M, ^* U1 k, x
// Additional capabilities
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NULL1 m/ ~' L0 x; W3 n: i9 v
// Reserved
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# {0 P- D, F/ t: [9 }
, u% x6 x2 l; Sif (FAILED(hres)) j/ a3 A: N1 e1 X4 w( k' K
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cout << "Failed to initialize security. Error code = 0x"
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5 j" ~, h$ `' }, B7 g: l8 ?<< hex << hres << endl;
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. B" U8 M5 E6 H; K2 N+ x" SCoUninitialize();
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' u7 w2 y# p+ v1 m2 |6 g// Step 3: ---------------------------------------------------: _: K- F8 D- P4 o
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- z O0 D/ n' h2 l// Obtain the initial locator to WMI -------------------------
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IWbemLocator *pLoc = NULL;0 W8 ?2 _5 A# R
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CLSID_WbemLocator,
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CLSCTX_INPROC_SERVER,
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IID_IWbemLocator, (LPVOID *) &pLoc);0 A5 j8 M" g7 F2 b; t; I6 n( N% a
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if (FAILED(hres))
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" u* @) Y8 Z" x& t: ?( C6 A
{& ]% z5 y6 m6 S* g
- y1 A! E4 e9 o! h/ W! ^5 F4 |# A; i+ ~! B. S) @5 `
cout << "Failed to create IWbemLocator object."
8 \6 F" S ^* N6 S8 x; Z
2 c. Z2 `* `: B6 d8 U& {5 K' ]# X
9 i3 ?; }+ S( X+ d9 q" h3 H* ?<< " Err code = 0x"4 F9 a" |! L" i# z" G
, u1 b4 C$ I7 T" u, h# ]5 ^
) K9 Y: q$ E0 q- |<< hex << hres << endl;9 x& R( C/ j: z. A5 U4 k6 q
" h( F9 H5 m/ S
3 R' e) y. z4 J! v( s& M. g R
CoUninitialize();1 ?( K* z- B( j2 Y/ B" z* c1 o
0 F- H* u e% t2 H# R* l' x5 y) |& {0 K) C$ n6 I% Y
return ;6 s) C' U9 q% G) a! ?
// Program has failed.1 U4 k- n" a2 g6 ^4 ]) c+ e
6 d7 |/ _+ |* n; |3 c
& d5 Q# Y( o. S1 m2 w
}
8 E9 m0 R0 i( k: B2 ~+ E7 l6 t( a9 v3 ?/ _
% R) ]: T8 Q3 M
- m& z- v$ m. j! G// Step 4: -----------------------------------------------------
4 o. g9 b) m' f( v" i* t$ ?& X2 ~8 A
8 t; g2 C$ {; ?' }2 A: Q" Q9 }; Q( ]: ~6 y2 u* F5 f$ ?
// Connect to WMI through the IWbemLocator::ConnectServer method' A3 n: `) K( M' g) e' o
1 Y+ f4 n |2 ]2 K5 f8 s+ c
$ ^3 n1 ?. q+ U; |1 E( T1 r) L5 T, s
& |$ I. o* b4 a. D9 FIWbemServices *pSvc = NULL;* F- i/ r5 @+ [" _. R
- Y" U4 v9 q1 \/ f' A1 s
, M3 ] d& r# C: `9 t- G4 W" ~5 J6 p* l% a Z" n/ q
0 [) L, t' v: P5 w; Q
// Connect to the root\cimv2 namespace with
& @3 ]+ k, V6 I; o3 n& p
0 \+ q% _- J/ _7 u' @, \# \' T0 b
// the current user and obtain pointer pSvc) z( L& J+ X3 c0 @ v9 z3 e
* f) \, _' S. l2 K' m. F
. {4 ?" G* l$ m0 I3 c# d// to make IWbemServices calls.5 a6 @( Z' F5 M' c
. ~" B% f' T% q' g% g* [9 X
! O) |+ Y6 l, B# B. U4 j& v6 ~" X) a7 [7 mhres = pLoc->ConnectServer( q- g' s K& ^
; V( | j" t/ Q1 g8 o; i
1 d2 P1 q8 R/ n# B_bstr_t(L"ROOT\\WMI"), // Object path of WMI namespace$ \) N5 l; _5 C% z
% X" `6 o9 `! h! } S
) M# S; D" o! a, ~) l, F+ L
NULL,$ Q$ F7 ]7 L- h: O8 a
// User name. NULL = current user4 x, Q! i# v$ {: V
: @4 s, }8 m, Z/ Z6 T7 v! G9 G3 A; |
: R: V3 J0 c7 D7 j" Y sNULL,
. H0 Q( u) z. C3 w( r// User password. NULL = current Z" V2 l+ h$ e
) }% C1 |. [3 O0 i
' f% L$ n+ V9 J; p0,
! d! V/ w$ v; K8 p) L8 t, Y, E5 i// Locale. NULL indicates current
% ]( T, ^/ d5 Q7 w( v" ~' y) H6 j( O* T8 q3 ^0 y! \% k, W4 M
2 \$ @+ w% r, C! f. H% J
NULL,
$ c1 _3 f6 K& N) ^! Z0 H% j4 m// Security flags.$ [: u+ e/ u" b+ b' Q- e
, T& i: [7 U/ g1 h3 L3 w# C0 U% L
4 I3 |/ x& H6 A+ z! H) r1 E7 j" H
0,
( y5 Q9 O8 c8 b8 z8 u+ V) \// Authority (e.g. Kerberos)/ @4 P# S5 S9 B6 R% O
+ o' |, D( G! w3 s9 D1 | h: Y! z) Y
0,
4 u0 h& {. a+ G: f5 Y9 G' k2 g// Context object
& K$ I) ]4 @+ e H4 r8 [
; \, [+ ]8 H' A8 l0 d# K* H2 Q- f5 C- n$ [* e% B5 F: q
&pSvc( F! l9 Q) {" u& o7 Z
// pointer to IWbemServices proxy
# u9 [; J$ r6 j; \! ^2 F; b9 }' ^8 p) F0 V. J* P* m6 C
% e% v5 r: `; ` e/ p);) n, P+ p* B, p \+ V( M' @6 M( U
, k Y7 Y M" k3 E* ] M; V+ z
4 n b/ K2 \$ [: ^7 Y% k
9 [$ P7 d) R5 S( p0 ^) l' [: c
6 P3 j- `4 U0 u( uif (FAILED(hres))6 x" t' V3 J" q8 u0 [
5 l$ q! k3 G; ~/ \3 t, A( ^, [& K% m# Z# v S
{( ?1 h) B/ R8 u2 _/ y- F2 K
1 M, _* w4 n) L {3 i- @% ^( v; N8 Z! F+ {9 ~9 T
cout << "Could not connect. Error code = 0x"
0 T, w/ k! N+ H J/ O1 E' W( V% a( l1 n. L! B% l" g5 Y
1 B! i+ X k( t, J<< hex << hres << endl;& _( b4 ]& C" y/ X0 Z6 O
+ q; e1 R9 ~$ [
( e1 B3 A5 c" L) m' c+ r `
pLoc->Release();- d# S. G/ B& ]2 y8 o
4 v2 ?0 y: D3 Z: r* i* s% m G" r1 a; f
* ?4 `0 `. r3 i) Q: t
CoUninitialize();; f, q) X& \( [. J9 X3 Z" g
6 `; Y9 K% M6 Y7 C' u0 y7 P9 t% @& A, h3 i% a0 s1 j8 ?
4 W3 d$ ?; s. Y9 _! z! l. c
$ t' \ p( l6 N& F0 L4 T" lreturn ;1 M* ~" k$ s( U8 Q J
// Program has failed.
# i1 S: B1 [3 `+ c
& Y' Q7 H1 a/ a; R* q9 Z" C9 O: I, ^* C% z0 G
}
7 Z5 u a/ @: q* M6 q; M1 c D
' H2 W; [% ^% {- S
1 q: P X$ g, h; r b, j. K9 i9 w @& j6 a: O2 m" k2 V; W# e
cout << "Connected to ROOT\\CIMV2 WMI namespace" << endl;9 \( ?6 a5 H, |' j7 } j
7 t; C# `8 W+ t [! M
% {; h: W5 e5 t, v: \. E3 v
; h: e, H- K v) r8 z! y+ @% l4 O7 K/ ?* U4 R! {! H4 k7 ?; e1 v
// Step 5: --------------------------------------------------
9 O9 e% W/ l% m8 S Q$ ^% e2 C3 B9 q
0 r: m0 Y" G9 t7 G3 c% Y6 \$ e
// Set security levels on the proxy -------------------------% y- S$ e/ d1 i$ G
, i7 g: N3 @! o5 Q# B
) j0 S5 d4 F# P; ]# \% K, k' m1 x2 `( b, }
hres = CoSetProxyBlanket(
4 L U, j' Q: ^1 A6 ?& D( U
* i) O/ k) M- |2 ?# D
0 w' e, Q3 m* n2 q' V; fpSvc,
1 k: @7 i b) {3 s5 ?$ s [2 s- |// Indicates the proxy to set
. _! F8 |7 l1 [; c$ x2 }8 s! u; z
! f1 r- P) M+ j" [- F" ~
( m* I* R& V F9 A' | ]9 x5 iRPC_C_AUTHN_WINNT,
; D/ a! S8 s) R// RPC_C_AUTHN_xxx& ?& s( N7 ^9 c! g. k
# H+ B! [2 n+ k% T9 g0 N: }: _8 ~! Z" k0 f2 a4 K
RPC_C_AUTHZ_NONE,
# K- R6 ?0 J- R" p; b// RPC_C_AUTHZ_xxx
$ m: E# ?- o" H1 g' p1 R: N( b4 s
! u8 B- T5 D) Z& H- p8 U! H9 v* M9 w1 k* Z
NULL,6 @9 e- \6 X& }% P/ ?; _( F
1 \3 o! V. c5 f
// Server principal name % n/ `/ B o, @! o! u5 U3 T; a
) J6 Q3 o# S" z, T8 G& E6 c
B( z+ x$ o G
RPC_C_AUTHN_LEVEL_CALL,
% _/ r" D, q! U/ T1 ]0 }// RPC_C_AUTHN_LEVEL_xxx
9 y# m+ w* m! |" ]1 Q' t/ d9 g
! B1 V7 ]1 s1 J6 W1 j9 [- Z0 _5 T4 s% Y, r+ k9 `; L4 G
RPC_C_IMP_LEVEL_IMPERSONATE, // RPC_C_IMP_LEVEL_xxx
# D/ F' C, U: G+ X, w/ G7 q0 s% s M/ z2 W9 x2 u
$ r, w3 J0 p# m1 C* k J
NULL,5 t% R+ [" j6 X" T; Z
// client identity# I7 D' Y0 a7 X! m
; E5 o" k* s1 o! Z4 F" \ m4 [5 g* T4 R* u3 c7 g4 X
EOAC_NONE1 w7 F z% P) S+ o
// proxy capabilities
. r& `& w7 N$ \8 n. w) k( d- H( K6 M% i- C- O: T$ J, B
% p0 j! n1 J8 A8 e9 C- O
);
5 \2 r2 Z) f% @# t- ]9 C# {8 Q7 d
9 B0 b4 M2 Z7 L1 t5 k& k- I# h& C4 @; _% I
/ l. K% R( O1 e5 [5 f5 w$ z! sif (FAILED(hres))
* Q" e" g$ x: U& w9 \4 }3 l$ G6 O+ p, O- L
- e. o6 o5 x( l{, v; A* ?! Y( G+ u) s3 V
% S0 C! Z$ R' h; J5 H/ H9 x- N t" }7 }* A
cout << "Could not set proxy blanket. Error code = 0x"
. D& `- E6 w, I8 V k7 v& }! @7 J5 M2 ` l: d) X- Y
; O6 N% i/ n4 [+ L0 L9 l9 M# w% c<< hex << hres << endl;# p8 N4 E2 V2 W* o$ x/ P
: N* t L) x. C$ k: s, x [6 d
" y- @% O5 F% j! ppSvc->Release();" p' C4 H! A+ {* k7 D N7 i! F: P1 `
$ ~# a% F" S$ C# l* Z* B
! b0 g0 N. K! ]/ X/ t$ ^+ K( W
pLoc->Release();2 |( C0 g- x1 g
" t% s9 a1 K Z; {* _) D3 E4 M. N% Y j3 u. S
, b* z/ h5 I9 N
CoUninitialize();
' |- u; E) ?9 E0 O6 r; w3 f
9 k: U% l+ H7 p+ y& l) E( @2 }$ ~. w h1 D
return ;, {4 G9 P4 {7 b. d- d7 o% v
// Program has failed.3 I3 \ p' T$ d% F( z8 G
* r. n/ W7 S% i5 Y5 e9 ]
& g7 S, L6 _8 \/ R4 r2 J1 w
}
% E& J5 x" \, s% ^% c- W$ a; w: R! G- K E6 a6 z% w: r9 S5 D
+ M1 {; |5 |3 o! z
) C5 V, i' Z' \$ Q' y! |- R// Step 6: --------------------------------------------------* a: ]8 e* ]5 M+ Z. L
7 `% v7 B3 q4 F l' w
0 r; E9 P( g- V/ ]! _, b$ ~// Use the IWbemServices pointer to make requests of WMI ----
! C- a [/ N. R7 \# _5 v0 i4 W' X$ j4 I) v, a! N6 j, }3 \
9 u. w/ |$ I$ G, t, y1 @1 ~' G9 Z6 R- {' @' D- N4 d: h
// For example, get the name of the operating system4 G& \; ]; M! `' f; A" C
& g# l, D6 E5 x) Y2 W
# w5 G; Q5 W; cIEnumWbemClassObject* pEnumerator = NULL;
: G T O" M3 v
+ ^5 }) i2 b; `7 f2 M+ C
' R- Z- |3 @( k `/ {
" x& O3 ]; r& B0 R# E' Phres = pSvc->ExecQuery(
7 }% C. K2 N" o& G% t1 y
$ U5 I' z) o) B' l) N, \; D) k" G
8 @. C8 C" Y3 D9 d; ]bstr_t("WQL"),
, ?. }1 V7 K2 N3 ~. t5 S9 W
, A3 m+ R, G2 D& G0 d
) y* v; S5 K: g$ I/ k4 s. o, Hbstr_t("SELECT * FROM MSI_System"),
0 ]. B+ g4 i! ?) y! U8 o/ x6 U9 S1 Y& R% X
$ d! q+ |* ?. k- L/ S, T
3 d+ i A m( `, E2 \% f4 BWBEM_FLAG_FORWARD_ONLY | WBEM_FLAG_RETURN_IMMEDIATELY,
; x9 O, O9 _: ~6 s E
) l n" E/ y( C
& B, d O H7 T" S8 ]NULL,
# Q, [8 `0 P6 W' ]7 [# ^
; M& `3 @" @/ q# D: n! q% f8 R& Q7 b4 o3 A
&pEnumerator);
0 \; U0 b W, U2 C) v6 g* Y7 Q! `5 Z& B2 Z
- n% J0 l/ c2 M0 F7 J% B* m- d* P" q& a5 t$ X
4 A. {. [( t/ K4 c2 Lif (FAILED(hres)); f; r1 H6 U" S0 h3 V# h4 m- L% b4 o
) }- A8 e. m8 K! \3 B! O$ P6 y' _) y, J) B+ o' z' [) E
{
$ k/ {$ [8 |- Q: W5 \, o/ {+ ?8 ]- F& }+ y. u4 j* T
; k# B- v3 Q5 k e1 b9 k5 R+ ocout << "Query for operating system name failed."
* k6 A3 L7 i; ~) \3 {/ R7 r8 _! d; Q/ Z7 |! U# {
4 x7 {( l/ ~+ z! ^2 y
<< " Error code = 0x" ' B( m `* l h7 I0 I5 g( T' H
, O% U" P0 J- x1 m# B) A4 }9 ]+ t
1 c0 o: M8 R4 t2 K) ^3 l6 L
<< hex << hres << endl;: a' y, _1 e0 d3 F' ^0 @0 l; K
8 _9 y6 d" j+ Y5 M) J4 p4 c" e
; p1 | H4 d( i* L( J9 I0 }pSvc->Release();
5 N2 v0 N, R: s
) i6 S/ A; O1 E& ]0 L+ x
+ M6 n% ]& i0 |$ lpLoc->Release();: x7 D+ p6 J$ J6 E, @
2 {- U7 J% x `( H0 B) x. @# f& o I5 h) A! I( X3 _" C
CoUninitialize();5 d: u1 B( Q. e: B; k- f: ^7 U
8 B9 e$ x% N! m, n# U, a9 E
# {, |% [$ s; Q2 U- _
return;
" P8 |3 s4 \. o' s/ x! s
3 L+ o! M1 O, ]' E; h// Program has failed.' x' r4 q5 A/ M& ^! p
4 l5 s4 o! l' {! ^9 v7 d. L
4 z. _; M$ P& E1 ]- z$ P/ m6 R p4 f
}/ z' ?' \% f9 J c
! ~! q3 |& J0 h/ ~2 w
$ _$ v& x+ Y+ o6 ]
3 T" n* P% T3 [- m0 U// Step 7: -------------------------------------------------
! |/ T% Q: Y& z; v I ]. n7 M& N7 n5 ]( ?
, z' C X$ o7 j5 p7 l* Y// Get the data from the query in step 6 -------------------' f7 x' w* z# X9 a$ p* D* e
2 K% M+ Q- I, S! s. G
4 @" r9 w1 Y) [# K9 I
6 n& B9 [9 S1 b% m/ U* ]# d
. g) |# `, k# R0 E* `IWbemClassObject *pclsObj;& R" A; V* C% E4 M
: v3 z" }$ [0 B$ ^% ~) m
" g2 Y5 q! H7 h" ~5 E$ a% @
ULONG uReturn = 0;
! J0 |2 M% X1 y: }; l n# [8 {0 _2 b- P
4 ]1 _5 Q3 z+ [; i5 D2 F1 a# F* U) i
int count = 0;, o4 b* A6 O; `0 L+ S
, d( u. {$ n5 z( b( H+ S
) w& }8 D% z8 S. l# J |# Ewhile (pEnumerator)4 x3 Q9 E4 I9 V, d. X" s, A, t
( K5 W4 e- O5 w- J, W
2 e. q3 h2 `+ T; \{
) O; h6 B2 e8 n! p8 f4 F5 N. L0 o8 t+ c6 Q( e) N d+ l; P2 Y
3 D! ]5 d' ?) s2 v( ]. {
, J4 j, I2 l6 k% a# s& b. FHRESULT hr = pEnumerator->Next(WBEM_INFINITE, 1, , S8 Y$ E( H/ q' w% t0 }( m
! S0 G) T8 i5 _; q
4 v* q+ t, P4 Z7 X& Y; I
5 t1 R$ B+ i; H, C2 h: r, q2 Y&pclsObj, &uReturn);
- P2 y# S z. d# A+ X* _3 j
) ~2 h! j4 t, `# q( g3 z& e
1 r1 g# s# U* Z6 L9 F( P
J: S- y! p- o2 J- Z; V* H" W! c4 p
if(0 == uReturn)
, a+ K o; a; E* A8 O z" g; b& h5 l6 _; Y; a% D2 c" p: K1 [: h. o
% j% y \# l8 L6 A0 c7 S1 _5 ~' N/ C: f1 O& x7 y) N5 e
{
3 f$ @; d8 R2 Y% }8 G4 j/ C; w) V. e
4 T# c$ _) j( J% T
. ?0 H" c& Z, _( x" O( Q4 tbreak;
! S/ }2 l b) i
, N6 ~! h% Q) ]# N# e7 P" L8 g2 v1 J H
" r4 |) ?$ O' C/ o% \1 y: l7 t7 V9 N
}5 k6 d5 T3 D& Y3 R& }+ P2 E
/ t# @5 u: ?6 E; {1 R: u6 R
if(++count == 3)
' ~9 y1 Y" m1 O
z1 m$ J4 R9 d+ w{4 H/ W# M( T& [+ Y, u
$ Q! H% g6 A) k& ~( V5 q, n5 qCString tmp;4 i7 j7 u+ ]1 r! m6 o: }( \7 V! F
7 M) I- Z2 ~% B5 j6 Q# ?
tmp.Format(_T("%d"),seconds);: C3 u7 n* U' |! P Q
0 K! W f4 C8 x. ~
s8 R$ b+ X2 L H/ ^// Set up the property value.
8 v- B1 J. Z, p( d9 u8 Q* a$ m9 ?1 G* Y/ p8 P
VARIANT v;
" r1 A, W$ M w- Z! C J
, b9 D; b6 ^% L5 m, UVariantInit(&v);. G+ u$ O, G V+ K2 I L
: E" h& Y$ T/ T8 `0 g
V_VT(&v) = VT_BSTR;
* X) q7 p! | I4 A! t
' h1 y8 l1 C3 }3 E4 uV_BSTR(&v) = tmp.AllocSysString(); // - decimal format, not hex
8 l: v9 o% ^9 z% {* `$ s7 S
n' I" U) ^6 _1 n: U9 O7 S; ?6 q, x9 u
hr = pclsObj-> ut(L"System",0,&v,CIM_UINT8);
' b* @6 @9 s3 N& d' B' t // Clean up.
. V: f. b, k; h: c: N# P: {( b6 X6 x8 R; Z0 B4 s/ p
VariantClear(&v);
; y; P [, d" c0 a$ D' G; v& X- q* p
( K8 H0 \6 O5 `6 z if (hr == WBEM_E_ACCESS_DENIED)1 J3 v, Z( Q, j+ N
' N! t* y! g/ ?# p
{
1 U! r% e* L C1 B" G! v; Z5 @# x4 q/ V4 w
printf("WBEM_E_ACCESS_DENIED\n");3 [, t" |, J8 j* P0 J% Q
* M: J3 Q$ D8 \' s k* P/ N( m
// Processing to handle specific error code3 n. Z( Q4 w) f% N! i: f
* U& l1 _6 ]' @}- z1 s7 U- k( z2 v# n5 w) _% M
else if (hr == WBEM_S_DUPLICATE_OBJECTS)
) z% j. i0 F0 q( ?7 r/ N, s; ?! X
9 A: r& q# F! x) N' U+ Q5 e{
- Z" d5 o! E, |8 L$ `
0 P& L, o5 C3 G1 l1 kprintf("WBEM_S_DUPLICATE_OBJECTS\n");
$ @2 ~* Q* R4 t // All other cases, including errors specific to COM
+ l/ q J+ G/ D% d' B' s: ^# F q) `) p8 h( }1 i& H
}6 O6 R# b% @0 r( S3 E
else if (hr == WBEM_E_INVALID_OBJECT)
6 Q7 D/ O& e" V+ x1 p
5 B+ z0 D5 C. o2 ?/ O{4 j6 i h8 Q" }4 X0 ^9 u' p
u& _8 o$ y# M* U" r0 J
printf("WBEM_E_INVALID_OBJECT\n");
/ {5 {6 L/ k; i* ]2 j, K4 [( l- L! r+ T9 i- X) k% C5 v1 J
}
! D# K2 I' K$ k else if(hr == WBEM_E_INVALID_PARAMETER)! a& ~9 v' F0 I! r: a
- q2 P0 @) ]. O) j
{% `4 R6 @+ ~! g- k
/ x$ j* i: W M- g/ b) \4 Q; P
printf("WBEM_E_INVALID_PARAMETER\n");9 J& H' P% |8 p; c& Z
6 b. c' j7 I6 [; F# E" w4 k K}
& b: \/ x" S) p3 p else if(hr == WBEM_S_NO_ERROR)
7 h& s0 A* n- D5 y
# y0 r1 k+ R7 }1 H9 k ]* C m{, w. T/ Z, M- z8 {
. {% Q' m# F. {0 r8 c
printf("WBEM_S_NO_ERROR\n");
; | V# J) y$ h' C' [. Y: } n& }. E5 J2 }9 ^2 `+ f6 D n$ q3 D
}
. r9 n, \& D4 i7 j else . ~( E7 h; }. K/ Y9 z! _
4 ?: z% I$ D4 r, hprintf("ERROR:%x",hr);: z0 M7 g$ k& ]2 N
/ C; [, h7 \; l D: p
k% O" w9 X: }/ X) s& d' F
HRESULT hRes = pSvc-> utInstance(pclsObj,WBEM_FLAG_CREATE_OR_UPDATE,0,0);" D2 a; v) ~. l; A9 h5 s% Z/ c* a9 q
0 r% R. T& {; s9 e p: j
2 m) Z4 t' s" f6 E9 j% v1 v
// Check for specific error and status codes.
( I; r& w2 f9 s2 E! B' d8 u0 t+ O if (hRes == WBEM_E_ACCESS_DENIED)
% r8 q$ f! m8 r, N- |; R: e! k: ~ B$ {$ @0 L( `
{! [' e% l: D, b1 o4 f
. N# P; n! S% @9 Y1 G
printf("WBEM_E_ACCESS_DENIED\n");
1 n/ H/ X! q- D/ ~4 b4 G4 I1 G4 s- `, m. u& r# J2 ?! |
// Processing to handle specific error code$ u9 K `1 A) k! x# |
1 c8 f6 {; U: V- `1 J
}
: K/ T6 [; P, f, D7 n2 x* g else if (hRes == WBEM_S_DUPLICATE_OBJECTS)
1 M. p8 F! V2 t. [( {. a
0 N3 {# s$ @7 ?{3 F% ~4 C0 J% V3 n
0 h8 G$ V) ~7 C! f p4 V5 Mprintf("WBEM_S_DUPLICATE_OBJECTS\n");
( ~% J4 p& I1 u% G$ i // All other cases, including errors specific to COM
! N ~. m' c3 K6 o3 M, d4 x+ H8 n, Z+ s
}2 k- ?" j! n9 y) |) W
else if (hRes == WBEM_E_INVALID_OBJECT)
; t- \4 u" a' c4 V9 R
0 q+ S, O, U4 ]! @0 g1 g{
. `+ k: S- y1 \' \0 l
4 z: B( H5 o3 }5 Iprintf("WBEM_E_INVALID_OBJECT\n");
% |) i3 ^$ _5 Q- n; w( |# P: M
# P" |3 Q3 z- ^7 ]}
6 t4 R& h; H5 n2 a: z# r else if(hRes == WBEM_E_INVALID_PARAMETER)$ a, p6 e- ~' ^" T' s- H2 ?' a
% x" Y% O0 v) [9 x/ i
{" V& b7 d2 Y1 V- y) } f$ p
0 F! v! c& H7 C' u: Z
printf("WBEM_E_INVALID_PARAMETER\n");
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}
9 L6 c! q: V% W* t3 h( N else if(hRes == WBEM_S_NO_ERROR)1 y: Q% W/ b0 U& l+ [7 r2 z: E; Q
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- T* P$ W: Z+ _printf("WBEM_S_NO_ERROR\n");0 T: W7 X- b; i% r8 D1 o
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}
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// Cleanup
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' q7 W+ r9 S$ J% S' H/ i// ========: ?7 {' I9 z5 C
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% E0 ^: l% M* Q. x- l: q; n3 Z7 epSvc->Release();
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3 ^' ~' ?' b. E* g+ k+ R! lpLoc->Release();, ~, m2 p' P/ u
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pEnumerator->Release();5 \: V, ^& S" m- K2 _
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6 U q( g# M' x7 A( s( PpclsObj->Release();
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CoUninitialize();; L/ O& m2 q% d6 h
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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, v- D$ ^/ f. p0 @# D
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
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- l- r$ x$ [4 ~* [! \7 C& QBIOS,EC,OS,Driver分别扮演的角色。
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that's all!
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( h) {3 u* |6 f# j1 @$ Y. FPeter
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[ 本帖最后由 peterhu 于 2009-6-3 14:25 编辑 ] |
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