|
S3/S4/S5 Long Run Test
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1. Why need it?5 h9 A$ \- p9 i: K n* ^4 M
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NB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。3 F3 W0 r' w, k" S; j
# m0 M) Z: J+ D3 l. Q' e8 r2. How to implement?
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$ L: {! M0 Q( I; P- }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。
& W6 R2 z4 h% K, M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:
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图 1
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) V8 i. S: I1 K1 G//hibernate and standby
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int# L* M- r0 g( C' L2 N
CAutoPowerOnShutdownDlg::SetPower(BOOL. e, \9 n+ u8 N& k, Z
bSuspend,BOOL
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# H& K# [8 R$ q( r hTOKEN_PRIVILEGES
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HANDLE
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LUID; J! W; c: I' N) b9 T
luid;
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LPTSTR9 q7 Z3 D5 R. J% a b
MachineName=NULL;
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if(!OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES,&hToken
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RTN_ERROR;
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if(!LookupPrivilegeValue(MachineName,
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&luid))
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return
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tp.PrivilegeCount
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tp.Privileges[0].Luid
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luid;" {5 k$ f$ j& [ ^) u
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tp.Privileges[0].Attributes
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& A4 ?% v% n4 W) }2 E- JSE_PRIVILEGE_ENABLED;
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: O, }/ ?6 d5 p! S8 ]( }/ Z" HAdjustTokenPrivileges(hToken,+ {3 \, w1 Q& T) M" w4 I0 y
FALSE,+ h2 Q4 c6 ~0 V5 ]) g# L
&tp,8 o+ g( n" A$ N
sizeof(TOKEN_PRIVILEGES),NULL,
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- y# s! y7 l7 \8 p8 [( E+ \: h) {) QSetSystemPowerState(bSuspend,bForce);. h' `3 s0 g$ p/ f) A8 ^
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return, X) f& B3 Z6 y$ F
0;
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" c* F {: ^/ n( d; M4 o' ~S3/S4 wake up function是通过在下去的时候设置一个WaitableTimer实
/ E8 k( R- D7 Q2 U5 n现唤醒的功能代码如下所示:
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9 T, R. E/ ?% w" |% v4 OPBT_APMSUSPEND:( T+ O, @$ u: y' t. Q& l% }- F
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{
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; C) g5 ?" S( pHANDLE hTimer=::CreateWaitableTimer(NULL,TRUE,CString(_T("WaitForResume")));# k# O- b" D- `8 Q0 [' Y" M* }" z$ ]
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if(!hTimer)
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MessageBox(CString(_T("Fail% o: U; l. y. m, m8 W
to$ Q& m" h9 S. Z+ m3 `# Z
create5 x* P/ `& n1 H7 W' _3 Y
waitable7 C9 b/ g) |$ Y2 p+ J# [9 t
timer!"))); V: D5 ~2 f# M+ M) q
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hTimer=OpenWaitableTimer(TIMER_ALL_ACCESS,TRUE,CString(_T("WaitForResume")));6 f1 ]9 X! m4 m8 D% j* d( a
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LARGE_INTEGER
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! A y" o0 ^+ Q- N1 A7 R; t0 OliDueTime.QuadPart=m_DlInf.m_TimeSnd *1000*1000*(-10);0 _. `' r2 r% `; N8 u/ D3 ?
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if(!::SetWaitableTimer(hTimer,&liDueTime,0,NULL,NULL,TRUE)). z- d" \" J9 C3 D; ^, t6 A: [
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) _2 l" S4 u- \% `/ PMessageBox(CString(_T("Fail
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set1 a% A; p- k* ?8 k7 \- m
waitable
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break;. L) k4 @& p0 R& V2 [
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}
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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
$ _9 r) _( ^+ n心的部分就是同连接到我们定制的WMI class MSI_System,然后通过
) F' z7 W! ]/ U5 h7 l" W4 S) } ~# rHRESULT PutInstance(
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IWbemClassObject* pInst,8 M# B/ g3 u% s; S: _
[in]
8 p1 `7 u& k1 i( G. X. tLONG lFlags,- s( `- V5 B) h0 f! N5 F7 z
[in]
/ g. g) \7 j @ W W$ P \, KIWbemContext* pCtx,# L ~) k h; d; j' F
[out]0 K5 a' ^" F$ `/ L! O
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8 ~1 E' y# I, Y
中的特定位置,这样就会改变EC ram中的值了。# `) C/ A& d6 h, @' T" X
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void CAutoPowerOnShutdownDlg::SetS4WakeTimer(unsigned char seconds)0 U0 U% N: |) `6 w0 R
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. p/ _! F ~& `$ ?# _. o- v// Step 1: --------------------------------------------------
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// Initialize COM. ------------------------------------------
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hres =2 N J5 ~5 @; D5 B
CoInitializeEx(0, COINIT_MULTITHREADED); / C" d& Y# v" J/ _+ l
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if (FAILED(hres))8 T0 Q& Z- a/ Y* b+ h/ Q
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cout << "Failed to initialize COM library. Error code = 0x"
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<< hex << hres << endl;2 t. a0 B5 ], c& o
return;$ c4 n6 f& F F) S
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// Step 2: --------------------------------------------------
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// Set general COM security levels --------------------------2 n3 v! t* y, U! W" x, {" f
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U2 e6 {; K4 o6 q- c// Note: If you are using Windows 2000, you need to specify -4 y$ ] x. T+ E$ R) c2 ^0 }! i! r
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) M; g! h2 r' Y" b. \9 V- ~// the default authentication credentials for a user by using
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// a SOLE_AUTHENTICATION_LIST structure in the pAuthList ----( Q7 {2 p/ J o) R
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// parameter of CoInitializeSecurity ------------------------+ M. l" ?) E. ^+ b, \
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CoInitializeSecurity(
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NULL,
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// COM authentication
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NULL,. u1 d% ~/ g* p9 g" R6 y
// Authentication services
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// Reserved
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// Default authentication
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8 h3 @" U/ r. E$ {$ i3 t( TRPC_C_IMP_LEVEL_IMPERSONATE, // Default Impersonation/ [" ?9 u1 m1 B
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: G- L# Q1 E* b9 S. I+ ]4 N1 zNULL,
! m3 i$ c3 k! L8 g: r, `/ o// Authentication info
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EOAC_NONE,
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NULL. U8 n/ |- m) e8 c
// Reserved/ b- ]& q& M: T. A$ a
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/ b4 I0 Y; A* G1 w' _if (FAILED(hres))
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* Z: y2 E4 y4 }) e9 Ycout << "Failed to initialize security. Error code = 0x" 5 V! J( U% A6 H5 ]" G# R& ~. `
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<< hex << hres << endl;
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CoUninitialize();+ A+ t& a0 Y$ ]6 O+ F
return;
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" }1 [: i! b6 g: ]" x! @// Step 3: ---------------------------------------------------8 z3 ~( T( j! s" N' q$ Q$ F$ M) k
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// Obtain the initial locator to WMI -------------------------" n* b5 }; U& r8 h1 t* K
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IWbemLocator *pLoc = NULL;' S+ u- N- m9 T" f8 i
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hres = CoCreateInstance(
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CLSID_WbemLocator,
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4 ~) j7 ]- K1 h( k) L" m$ |CLSCTX_INPROC_SERVER, * `+ J0 T( {% S3 f7 |
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IID_IWbemLocator, (LPVOID *) &pLoc);
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* y* M$ ~$ D1 [9 @8 W0 Jif (FAILED(hres))
2 |3 Y1 o& x. B. H' c2 R9 Y
/ C* M: N/ k, [$ ?$ j j8 ]9 T9 F( i0 s
{* ~! i# r+ f- U) m2 Y& D2 M
4 P B2 ^0 a: k% W7 a( v! G' ?8 I
M; {. _. ~8 ?cout << "Failed to create IWbemLocator object."( B- V* {; z8 [
5 Q, u% r# j' Z8 q6 _; p9 R
# R. ^2 e4 i( T) b! s<< " Err code = 0x"
% n" b4 K+ R4 m/ V% p" Q4 R5 L R
( n) q" p' ?: o( M1 M0 O& v$ c
9 n( B) {* w7 y. E<< hex << hres << endl;
5 _! ?0 B. s% P, m
# o. S8 Q& {& d, ]( k5 b, p0 z( [$ C J* |" K$ @0 f7 R
CoUninitialize();
/ R3 R% H2 ^8 _! M& M% |! _, N# h- I6 f/ v# c o# g
% [4 U+ q/ ~8 E& z
return ;) f. ] n0 N! J9 L8 d6 W$ ], T
// Program has failed.! W3 J+ @* o' v; c* H4 N( F
/ E4 U3 h" C" ]1 o$ S
9 `& T/ ], j1 g8 F0 k8 a1 _}; e `& S% s2 P% P+ M0 l! g; v
$ D7 _% P/ _+ O- W
5 h/ T" B S1 p \" ]8 e. `2 U8 } o" X& W Z/ V b
// Step 4: -----------------------------------------------------( o5 _) j" q: N2 d0 i) |
# [( i8 M+ N) {* o2 _
/ P4 U7 }3 t z$ I% H& d( _/ }
: g/ {7 q# l& Q8 @. W! B# O// Connect to WMI through the IWbemLocator::ConnectServer method- v6 ]9 g2 t" H5 c0 A
* p9 |7 M* P6 v" K: h3 g7 g$ ^; @2 `! j; u, O2 `
. m0 P) u0 p) sIWbemServices *pSvc = NULL;7 [: l+ L) ~! i8 R# n+ S( c
' c. E+ r0 U7 K9 C5 ^
7 `; D3 k( R% x
7 w: [/ M' Y- N& v7 l: u1 }' o5 o9 }! K; t
// Connect to the root\cimv2 namespace with, s% d$ j5 i, b8 r! Q2 a
% \- g( V0 w7 Z; w! b& M# V# t B& r
) L& X* ~& H L" s2 t1 j// the current user and obtain pointer pSvc
4 f% W1 K! L# w* G* ~& Y0 e0 r0 |! ^0 V
) |/ E. H' w2 V) [) c
// to make IWbemServices calls.! X4 l; f5 Z h0 ^
0 ~) K4 h3 x. R- t2 G B3 f* p& @$ [* a- c$ s" `/ y) d
hres = pLoc->ConnectServer(
' k# ~7 \9 z, a0 o0 K
3 D; o1 T K8 U$ l J6 L7 t8 A7 _. O1 L) ^* ^
_bstr_t(L"ROOT\\WMI"), // Object path of WMI namespace
) e! H# c! D# ?
# c( d1 i5 m9 x% C1 a4 _: Z; a) g. R. [8 g, z3 Y+ Z0 s f' V4 `
NULL,; D/ \0 P3 W) S# F
// User name. NULL = current user1 e" B; b( z% _3 d( V
: B1 I9 Q0 i8 j: C
) z% W9 S0 k. w( P, ~# B9 fNULL,
0 q' U, Z' S x6 B+ p$ q// User password. NULL = current+ V& J( [) p- t( w& U( d+ X
2 d' s/ \, ~; C
3 e# I8 }' L+ J9 ]% m
0,8 i9 [5 @- [: D
// Locale. NULL indicates current X" v) ?0 j! e3 X" V9 e" l
8 l: a8 o& A* n m: p4 J7 `8 w2 ~) }' l$ [. E8 e
NULL,2 r" w2 W) |/ @- N: i% V4 o
// Security flags.
+ V1 P6 Q ^- F
$ n% V* H2 k6 s# P& f8 t
0 } a2 i" W4 ]9 _, t1 Z! Y0,+ [% i B$ G+ h( A3 B: u8 B
// Authority (e.g. Kerberos)8 E4 b& f( G6 d4 d. S
( R5 B, n+ A3 B7 ?7 h$ X+ r
9 [# U. h3 w) S/ a T2 l$ {0,6 Q2 ] p# V4 I/ W
// Context object / t2 a3 N) |, S; d3 G7 b: q% {
f- w1 z) C; y% z/ J/ G. s" T
* R+ E: ]: q& @1 e3 }5 E1 U
&pSvc+ z6 c. S, I7 ~1 s+ O7 h
// pointer to IWbemServices proxy8 h; n( ~" ]* ~& D, N
3 _! b2 p% f1 G% A0 y9 V
0 ~3 z' O1 D! j l% C) R
);2 l, K# X' R& ^6 L+ m' Y- j+ Q
& @5 N9 W T9 Y1 W# ^0 I0 [! j% ~
/ p0 ^2 V# A {, D" \6 J4 g
4 V% E5 Q6 a; M! `1 E( Y, R% Oif (FAILED(hres))
& @/ Z4 l6 e( @# g9 C) B- v
4 \ d* T$ _+ M4 I0 b8 K9 f) \3 q2 _2 l! k8 P; a2 [
{
! d6 O! S5 o1 O' A, @- N& y0 V! ?0 F2 J8 r1 Y
$ X" L( @3 V6 @& K& ^' ~cout << "Could not connect. Error code = 0x" ~* [7 U$ j' i8 a% Z# o7 r
+ }- y6 I( d$ s9 j
8 o- b1 U2 B8 m; p) W( g2 ] ?3 A& i$ {<< hex << hres << endl;+ h! y" O, ^5 L& P/ U
2 w. f- ` {2 e3 o) i9 J
O: a+ ?5 j4 u9 `( d6 K5 _$ RpLoc->Release();( J5 T/ I. |) M
- K1 k7 H( Y" } V3 m7 l0 X* U t4 j! G; W3 v
1 f/ f1 P' s! U [4 F& Y. r
CoUninitialize();
4 X5 |7 z1 Y! @. E. D
9 E/ V Q3 ^2 D1 L' B* J% ]% X, l5 A- s" ?
8 E1 i2 {9 I5 W) I, ~( Z$ {8 B' l3 h$ T9 y
return ;) d3 D/ M1 }* Y
// Program has failed.* m( s. T* t) v9 [. D
! a! H4 Z: |2 u2 c7 K5 O; ]! N* u
+ V) A8 k$ p" g1 X; \5 c4 x}
d M: @$ X9 C, _$ {0 h$ t. T& I3 q# S% ]
" V. G7 {3 G1 t* M$ x e; ]
8 T9 d% C% ~: T: i: B! Vcout << "Connected to ROOT\\CIMV2 WMI namespace" << endl;6 ] ]: e/ ]; k$ P, [
. K; e' D/ Q2 u. [" l ]
$ _7 a/ z7 ?9 y9 L6 x% Q, O( b' d' V* K& n* m% F1 W
$ J( B0 ?0 D" P' i5 O
// Step 5: --------------------------------------------------( A6 t: E$ e6 u7 h2 s
0 r. U/ U% s3 g+ H2 M- L
4 V; U8 t1 a0 R
// Set security levels on the proxy -------------------------/ D9 |- Y B* C# ~4 O; Q
3 K" d; y7 g) l$ P: f4 W$ ]
$ t+ x- l% x* G6 y( g7 t* W9 }$ J. Y1 }
hres = CoSetProxyBlanket(4 I) f+ C+ |/ ]1 t% D
& A3 d) I7 w9 E/ y# V
$ `) O. D$ S I1 d! SpSvc,
! ^% b# ]4 N* _% r" t* e) h// Indicates the proxy to set6 k+ {( h5 D" r6 k1 K3 ^! P
* q1 u1 X0 N6 W# j. r% G% ^+ U$ S$ Y# z
RPC_C_AUTHN_WINNT," w' V- P: ?0 _* t5 p1 @( T
// RPC_C_AUTHN_xxx- v9 g5 _, y4 @1 a6 G9 r+ K+ \1 s
$ i% A; W$ Q: x
, s, c N( Q! E* F! O# d! V. K6 t0 Q
RPC_C_AUTHZ_NONE,( a! c1 d+ u+ x% e0 F
// RPC_C_AUTHZ_xxx
- V1 B, J0 j0 D: v2 L: h, J6 X5 @- w9 z, m7 I- t+ U
; f# T8 Z4 t2 W, N& B! cNULL,4 |; b `& e& ^4 q p2 f' k" O4 N
" d3 f4 w" |9 W8 C. ?8 A// Server principal name
2 r1 M' Y( g w3 J" \+ p* P0 x8 T+ X2 b/ J
$ \9 q. S1 D* U7 z8 g
RPC_C_AUTHN_LEVEL_CALL,+ B1 }+ r% c) f% ` g/ |; s R
// RPC_C_AUTHN_LEVEL_xxx : [- B8 s0 M; C9 A
/ p: b' V" Y, M w
4 f' t# |+ I5 v" W9 F& S) h5 `- x
RPC_C_IMP_LEVEL_IMPERSONATE, // RPC_C_IMP_LEVEL_xxx
. l5 ^2 f+ Y0 V7 ^. L4 a _- e
' }( F, Y" G" `4 \; B6 WNULL,
. B" H$ Y4 P: @1 S: P// client identity: \1 p) p! C& c; z0 q) K$ S
6 W) Q- e5 d5 c" A
- V: A' _+ e% M0 J+ p' k4 g- ^* yEOAC_NONE
- d. V) |3 d/ X( a4 N* a. m// proxy capabilities ' o& ~- a7 G8 U
) _+ I# C7 A# c. _* _) e5 f6 N. \6 o+ V' y6 }% Y0 L
);
) N1 t0 b/ {4 s) B5 ~1 I7 h6 p# H) {
0 q4 `. B, Y2 ~! c P& o5 G5 g
" E# c0 o( {: D+ h% |
# p4 }$ o; \0 z8 l+ K7 C+ Q4 ]! eif (FAILED(hres))
# P. W b5 D, b% F/ Q, J) X3 i ~4 r
% j/ v1 t ~% @& [6 k, s! c
{
+ ~* X, Q1 _3 U/ ^; Z4 |/ F6 {! O( q6 z1 g* H9 P* e) T$ v
; ]. ^) ~ G( j8 pcout << "Could not set proxy blanket. Error code = 0x" 2 O( ]: w" g" }
2 i' S7 d4 Q5 ^' b
% ?) e. q6 S0 _! U$ @
<< hex << hres << endl;. r% x3 j# P& N1 {9 ]9 S. v* y
9 [0 H+ T: Q6 W# O5 a/ | R( ]0 u" e1 h6 Z& Z" r. T: j
pSvc->Release();
9 ~2 o+ g* _4 P' n) P1 E8 i
: C/ U x/ y) I' R( E1 e0 W1 p; }
7 y1 E5 g V2 I8 I' a, \pLoc->Release();6 x1 D1 [$ S8 F$ K! U
) E& _) R, V2 B# p m4 }
8 R/ J# \4 |0 c
2 j5 z" K7 h. H) u; V- WCoUninitialize();5 m+ D( j8 s9 O! v3 E8 c
& P3 e1 b* ]; M1 p3 f2 t/ c
( {1 r- a! ]' I" z% }0 g0 _return ;0 a4 {* w& S1 D3 \. a3 u
// Program has failed.6 _2 j% c+ _/ t5 Q5 z
9 j# d) `' _% D# j0 N* O7 J( K: `5 X
}
% z1 s3 V( B- Y+ t: |. p, `" j# E$ L+ F7 V% O, b4 V
* k% p6 A* q6 Y1 |% J3 z
2 a9 h8 {. y; `0 X8 l// Step 6: --------------------------------------------------! ?/ }; R0 F4 l" a& `
6 f; k0 A( F* _- P3 v+ ?
4 U# N: P* F+ U1 u4 s$ ?$ p
// Use the IWbemServices pointer to make requests of WMI ----
$ ~, i6 g3 a; O# X
3 g2 s( W' Q; t9 G1 U
) r! X6 u% B2 Y c& e) _
$ [* H2 L1 v9 U2 f1 G// For example, get the name of the operating system4 A2 ?& A& z2 J
' e# z! w8 z6 R' x# I' ]2 p+ ^" J4 R. f, h3 `1 y9 R
IEnumWbemClassObject* pEnumerator = NULL;: v" s0 B; {( x3 h
5 {3 Q& w" y$ F7 x; {
1 b6 g9 z' M+ Z% ~0 r0 U% H% \
8 K8 J3 A. i, g4 Q# p4 q% E
hres = pSvc->ExecQuery(
4 K$ c2 i- X3 d5 E7 r {. U3 w L) x6 ~5 M! ^' D
\. v1 W9 C- A5 w. B1 ibstr_t("WQL"),
: k3 m# L4 ~9 L9 I t6 q L6 h) X# N0 g
+ s- P- j0 \4 c! T9 {0 \bstr_t("SELECT * FROM MSI_System"),
/ P8 g) z$ |6 K8 H- K
; j. _( k7 |% N+ X1 V, X- i6 j
' n/ O. F- V1 T8 {% ?% c6 eWBEM_FLAG_FORWARD_ONLY | WBEM_FLAG_RETURN_IMMEDIATELY,
7 `- u" x. p4 g+ s9 q7 G: P% U' W# M
" b( N7 w. a* E/ U7 v* Y" X% G k' U) R
NULL,* p8 q, U4 n' p$ I( |
& V4 Q9 E* V: ~& B& l5 J: |( v* V, S/ A" A
&pEnumerator);
" I0 `6 H' i, g& `
0 i7 s% r2 r7 J& B3 H- @) M+ A- v2 w3 ]- f. C: f/ }+ {5 T
9 z& O q) O3 ~6 o& c g( L7 J7 j Z
if (FAILED(hres))* c& B% k) ?$ s; g
/ X* B0 n( O8 Q1 {3 c, G
# H" N1 ^2 U9 X- j; i0 [{& X* f6 c5 i. J6 K# c# ?# Z
, S# I; l9 a4 H5 |" f- x4 T
: B: p' p; P |( T0 |# G" Icout << "Query for operating system name failed."4 o& k- s/ ?+ V8 j' @$ x
5 m" ~: E6 M1 e
5 f6 s9 F [- E+ d: P<< " Error code = 0x"
/ i& ]7 y& ]/ Z9 f2 N8 |, d- Z$ R) o$ j* w% J) g# S
: f" \- N( Y* h& I; X<< hex << hres << endl;: U: {: W2 n/ ~( ^; Q( ~1 a' T9 m
9 Y* t8 V5 k% }: E4 K
( l# U# y9 f3 \# T8 ~) g1 K4 W5 L
pSvc->Release();" d6 M$ r/ }1 J' _/ _5 w
4 ]6 f& |* p& ^3 x% N% y% E8 y/ D
! R, o8 `9 F/ E2 c( @6 CpLoc->Release();! ]% |( ^2 g8 v9 t4 u5 ?
0 M2 e$ C- J* ^! S
( w- [9 ]5 `8 z5 K& R1 h0 L# fCoUninitialize();& l8 k: y3 N3 E% Z: h
- e) F% @5 u4 M* C9 p5 X& a# k2 W- H: x
return;
3 M9 f1 x$ d# r6 V$ R3 J( O) v" y4 `. q* _& }5 K
// Program has failed.
, w: ~; k9 k$ E: p
T2 w/ C! S6 K5 x) k# u4 {8 N( Z0 E8 X' P* j3 D
}
/ r7 P7 e( s# {
/ F, B( r; S- s" o, p7 I. L: r$ j9 F6 o
. c5 v7 l8 q7 A// Step 7: -------------------------------------------------, [4 K3 C" Q& w+ Z$ {! b
5 \) y0 ?1 ~$ s! c8 s5 v8 \
0 i; i! l4 ?( I0 w// Get the data from the query in step 6 -------------------. j n+ a/ {, ^5 ~/ q* j
! F: l$ W q1 A) `! z
# z @' [* |4 O/ r1 o3 o# A/ s; Z1 c( Q* m( b9 V% M
2 f* r1 ~& F7 B! e5 U$ k* [1 `
IWbemClassObject *pclsObj;
. k) f9 g! k: U5 V4 C
. P: N( u% `! i$ C# m/ l. z
6 L/ L9 C) J8 u' F8 C5 mULONG uReturn = 0;
* b2 }2 b+ z! d( B1 v4 g
/ v. g. p5 I! `' U3 e e- V6 r* k) }
int count = 0;$ a3 n. r* f" p# u( Y* y
8 n9 N, K' r& v z% P# v
6 G" v7 \% H2 }* V& P' K a$ rwhile (pEnumerator)
' ]# l7 H2 t% x' H) H# Q5 z. n+ v/ ^. [( k! j$ t0 T1 v
& v+ k' [9 l* B7 s
{$ }: ~7 h9 ]: B+ y8 G" G. n
+ r8 _9 H" z% W& l3 j1 c- \0 F7 p- {& C1 F* H4 q
. D* {. ^" z7 u$ ]
HRESULT hr = pEnumerator->Next(WBEM_INFINITE, 1, . }/ W) x/ z8 z' R1 q/ }* G
0 ?/ M7 V( F5 w/ j
" c: F# d( H! Z( N5 u
* |/ D# ?' x9 U- p* U/ s
&pclsObj, &uReturn);4 u' s9 {# G: F( s& `" J6 A: a
# L- `/ E. ^( W2 G0 l9 I0 a; {7 X/ f& ]7 s' O
% A. t* X+ z/ m2 n& R, N+ }7 K& Y) s2 z( [* w
if(0 == uReturn)
1 N1 u+ q7 ]. t4 i0 C* Y
4 b! j0 m6 G1 N l. b
Y8 t& y2 X; _) A. w2 v8 x7 R* a! o: K3 q3 _8 y
{& ?& V, N& j6 [
# d! E) e8 h* g; j7 y3 _7 D
2 C8 n+ ^0 Q! C! O
; ^# L) e* c( q/ E) ybreak;
1 W$ u( B0 G2 G2 b4 B
; T4 R" {4 v+ h) F" n- V+ D9 k+ Y! p
, m' z$ \% t* p}# H9 L3 P: t8 D7 Y! a8 S; ?: |/ u
" G a! C0 A! _! C- W8 F# ]& h
if(++count == 3)# K. e1 F/ Y6 }" Y) Y4 l+ U1 B; ?
0 J+ m5 C4 \3 i( S+ g6 E
{
2 ]7 W8 T6 J% g& u7 ?& L
! L9 ?. c6 Y2 Q6 ?1 x) W) ACString tmp;& _ Z4 p( u1 n0 Y; ~ X
. e' q1 [+ T9 M6 {% H
tmp.Format(_T("%d"),seconds);1 R1 C3 I$ X3 L5 e# j( I
9 k6 w5 u: F3 }* \8 X O) ^( ^% R
// Set up the property value.
! s* R# k' e, _" P4 X0 m" i: l
1 n* s% z. J7 Z. kVARIANT v;
3 D6 w' s9 I' E- F5 N. {0 a7 z& O8 g$ M8 U7 O1 G
VariantInit(&v);
- u4 [' s( S! a6 _/ @3 }2 k. ]( ~. l5 J J- w* B6 I6 \3 Z* _$ ~) ]
V_VT(&v) = VT_BSTR;( F) K# u1 Y7 z8 B( i
' L* Z: `1 R# Q3 h( {
V_BSTR(&v) = tmp.AllocSysString(); // - decimal format, not hex* f3 y7 d0 r9 V' H1 ~8 e, H, l9 ]9 B9 W$ ~
/ k: Z9 U9 }9 @
* h2 c b) Y9 ?8 _- lhr = pclsObj->ut(L"System",0,&v,CIM_UINT8);# e# j- X6 \/ \9 t: s# W: w
// Clean up.
& K4 f9 `' |; j" l& a
& z( O B2 D( FVariantClear(&v);" r& f. s5 e2 p \' I2 V& @
5 T: i5 T4 e2 l, A
+ T, \. B+ H1 h% S5 O if (hr == WBEM_E_ACCESS_DENIED)* D9 T7 y- n9 L5 k1 P# i; z* u
: s0 ]6 h) ~& \- B
{
; U8 m ?% f+ ~, W" \, a5 l9 J
8 Z) x$ B. [0 e& _$ \printf("WBEM_E_ACCESS_DENIED\n");/ T3 D5 V, E- d3 k7 V6 `
$ x% @, |! j, w$ w. O
// Processing to handle specific error code2 o! Y7 y7 Z( b2 e3 `. J
" h7 c, j' [; M6 W}' ?4 @. p$ O* S( N
else if (hr == WBEM_S_DUPLICATE_OBJECTS)
$ w. n( {* e8 h) w, c! ]
" p$ S# e' b6 |0 D* w& i4 n* }5 N; b{3 e) `6 y1 D" q8 x% g* N
; Q9 \' C5 E' c4 c9 u3 P
printf("WBEM_S_DUPLICATE_OBJECTS\n");
7 |, K+ k% U% e: p% p/ _. `) |" q // All other cases, including errors specific to COM4 M a4 L5 u/ B0 ^, ]
/ x0 J3 T1 I( E) _}
0 o" y9 s( x9 @) K) ^% l& F8 I9 p4 s% O else if (hr == WBEM_E_INVALID_OBJECT)6 @+ ?# s' q G+ ]9 P( q3 a
5 I3 Y) Q! |! H6 M9 Q$ B
{
$ p5 r/ z' H; Q- g2 S! j0 U& h2 X% K
9 r2 |% F: B4 @: V$ F, J8 kprintf("WBEM_E_INVALID_OBJECT\n");
6 [( K8 B: d% A: o, M5 k2 d0 v! z" ^8 H( R e
}
, E: K Q4 A3 T, ]% T else if(hr == WBEM_E_INVALID_PARAMETER)
. y5 `' d9 ^" Q! |
- b$ ~* K H; E0 q{
' O0 J9 [" d. u1 B L6 M/ K5 Y U# \( K1 ?, w( j( K5 V+ z
printf("WBEM_E_INVALID_PARAMETER\n");2 H5 T9 q, S" X# {% g
p& k6 e% C. e/ O, O1 x}
6 z7 n5 p3 p, k( F1 G+ V1 X; z else if(hr == WBEM_S_NO_ERROR)6 [( n) g: a3 W1 G' I
9 X1 Q q- q) \, A+ R6 K
{
8 Z2 |9 B4 U- ^/ n# B5 D. C4 H0 q$ ]' G% q( W- n: S
printf("WBEM_S_NO_ERROR\n");
: ]. l0 o3 n$ y: F, N" a. d% c4 |; d
}
+ m6 K6 [+ U x5 T5 [" Z x else
3 B& d# ~- L& K; b1 |- h" r: n2 x, R6 F2 G# U
printf("ERROR:%x",hr);5 g. j, y" q; Z! S5 L% O$ _0 i3 ?2 Y& k
# }1 @2 \6 A. F. F
9 d9 E% S7 @# ?. [/ r' L fHRESULT hRes = pSvc->utInstance(pclsObj,WBEM_FLAG_CREATE_OR_UPDATE,0,0);: O/ A$ P0 }% H
8 V$ l7 {& _- J, {! M
# c' r# a* J9 n, W u) W; q // Check for specific error and status codes.; R: o' R7 l2 j+ F" ? u
if (hRes == WBEM_E_ACCESS_DENIED); o2 ]9 B: S- |* w! @
) a8 ], y6 P, n4 H{
. v J& t9 }! u" M Z, W$ |2 g" ?
printf("WBEM_E_ACCESS_DENIED\n");
/ I1 s3 y: k! B z2 ]: Y2 I0 P" r/ X8 v7 C l
// Processing to handle specific error code
$ F/ ~0 o! X0 m
: _ s5 Y( ?& x3 L7 P m$ i d}
; P7 `' [$ q6 W' U* U \ else if (hRes == WBEM_S_DUPLICATE_OBJECTS)" `( C$ K+ d% x& f+ G
: E2 J8 V8 m. h8 G( o; _5 X# j
{2 [' B! V0 o- N- W
2 o6 A0 y2 S2 H9 U1 `9 A3 [& i- e
printf("WBEM_S_DUPLICATE_OBJECTS\n");
8 r C# q0 D) B) g! F& V // All other cases, including errors specific to COM" v* d- l1 W4 {" W
* R- @9 ]3 T7 C x) Z) k9 D}: g" | ^) ?4 G
else if (hRes == WBEM_E_INVALID_OBJECT)
4 d6 o5 W: |4 L1 j- r2 f1 `2 B& _2 j3 I5 S9 @
{
$ }( @- ~2 ^, W' B$ w1 e, c
7 _" D) |* W8 l3 V+ Uprintf("WBEM_E_INVALID_OBJECT\n");
2 f3 ?+ d$ J0 u) ~$ l% x$ Q a# f, P0 J
}8 M: y# g0 r; i$ d: D% X5 {
else if(hRes == WBEM_E_INVALID_PARAMETER)3 V! \* U7 m1 K- i
( q& X8 z) t" o- t7 f! i4 T{
; _; |% H; q& ?( K; v& p% S; c) C a, H
printf("WBEM_E_INVALID_PARAMETER\n");
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: f9 r. h, ?: z/ J* B}7 C2 I, s J( f% b: E. f4 i
else if(hRes == WBEM_S_NO_ERROR)
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{
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printf("WBEM_S_NO_ERROR\n");
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}
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// Cleanup0 {! ?: W# b' n m5 g
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pLoc->Release();4 V6 e" _8 p8 M3 {; j! D" Y+ d
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pclsObj->Release();7 n% B2 s3 K/ D5 A% U8 {$ y
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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,
8 o! j. [- E) C! u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. a* H3 A4 Q) h6 n) F) D. J
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BIOS,EC,OS,Driver分别扮演的角色。
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V/ ?, e# w/ G, b: t" gthat's all!/ R$ W% G2 ?+ [& _
8 f0 R) T6 G- g, p! MPeter ) }0 t3 ?1 V4 `8 w$ J. d/ r9 P: n
. E" b. i# X! E) ~; N3 ~0 i$ U. ?[ 本帖最后由 peterhu 于 2009-6-3 14:25 编辑 ] |
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