Windows Shutdown [modified]
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Hello all, Firstly, does anyone have any info regarding the NtSetSystemPowerState function? I can't seem to find any documentation. Secondly, is there any way to shutdown which is faster than calling ExitWindowsEx, but slightly better than calling NtShutdownSystem from the kernel? Oh, and finally, can anyone provide me with some information on the entire windows shutdown process, beginning with the call to ExitWindowsEx? Thanks in advance. :)
modified on Saturday, March 14, 2009 3:10 PM
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Hello all, Firstly, does anyone have any info regarding the NtSetSystemPowerState function? I can't seem to find any documentation. Secondly, is there any way to shutdown which is faster than calling ExitWindowsEx, but slightly better than calling NtShutdownSystem from the kernel? Oh, and finally, can anyone provide me with some information on the entire windows shutdown process, beginning with the call to ExitWindowsEx? Thanks in advance. :)
modified on Saturday, March 14, 2009 3:10 PM
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Hello all, Firstly, does anyone have any info regarding the NtSetSystemPowerState function? I can't seem to find any documentation. Secondly, is there any way to shutdown which is faster than calling ExitWindowsEx, but slightly better than calling NtShutdownSystem from the kernel? Oh, and finally, can anyone provide me with some information on the entire windows shutdown process, beginning with the call to ExitWindowsEx? Thanks in advance. :)
modified on Saturday, March 14, 2009 3:10 PM
hxhl95 wrote:
Oh, and finally, can anyone provide me with some information on the entire windows shutdown process, beginning with the call to ExitWindowsEx?
Some info is available here.[^] :)
hxhl95 wrote:
I wonder if the function params are the same on Windows, since ReactOS has almost the same kernel...
It's quite possible since ReactOS is designed in such a way that existing windows program can run on it. So, for this the API parameters must be same... This can be verified by calling this function assuming those parameters are correct. If call succeeds then you have got the solution... :-D
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hxhl95 wrote:
Oh, and finally, can anyone provide me with some information on the entire windows shutdown process, beginning with the call to ExitWindowsEx?
Some info is available here.[^] :)
hxhl95 wrote:
I wonder if the function params are the same on Windows, since ReactOS has almost the same kernel...
It's quite possible since ReactOS is designed in such a way that existing windows program can run on it. So, for this the API parameters must be same... This can be verified by calling this function assuming those parameters are correct. If call succeeds then you have got the solution... :-D
Well, I did try calling the function with those params... Here's my code (after typedef-ing POWER_ACTION and SYSTEM_POWER_STATE:
typedef DWORD (WINAPI* lpNtSetSystemPowerState)(POWER_ACTION SystemAction,SYSTEM_POWER_STATE MinSystemState, ULONG Flags);
hNTDLL = LoadLibrary("NTDLL.DLL");
lpNtSetSystemPowerState NtSetSystemPowerState = (lpNtSetSystemPowerState)GetProcAddress(hNTDLL, "NtSetSystemPowerState");
NtSetSystemPowerState(PowerActionShutdown,PowerSystemShutdown,NULL);The only param I don't get is flags, which I put NULL for. Not working. ;P
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Well, I did try calling the function with those params... Here's my code (after typedef-ing POWER_ACTION and SYSTEM_POWER_STATE:
typedef DWORD (WINAPI* lpNtSetSystemPowerState)(POWER_ACTION SystemAction,SYSTEM_POWER_STATE MinSystemState, ULONG Flags);
hNTDLL = LoadLibrary("NTDLL.DLL");
lpNtSetSystemPowerState NtSetSystemPowerState = (lpNtSetSystemPowerState)GetProcAddress(hNTDLL, "NtSetSystemPowerState");
NtSetSystemPowerState(PowerActionShutdown,PowerSystemShutdown,NULL);The only param I don't get is flags, which I put NULL for. Not working. ;P
hxhl95 wrote:
The only param I don't get is flags, which I put NULL for
Flags is of type
ULONG. Instead of putting it NULL you may try substituting it with someunsignedvalue like 0x123.... :) And since it's hit and trial approach after all, this might not work. Instead you may try looking for actual kernel calls and then finding right parameter values using tools like process explorer etc. Best of luck!!! :) -
hxhl95 wrote:
The only param I don't get is flags, which I put NULL for
Flags is of type
ULONG. Instead of putting it NULL you may try substituting it with someunsignedvalue like 0x123.... :) And since it's hit and trial approach after all, this might not work. Instead you may try looking for actual kernel calls and then finding right parameter values using tools like process explorer etc. Best of luck!!! :)I just found out that NtSetSystemPowerState returns STATUS_NOT_IMPLEMENTED in NT 4.0. Now I'm wondering if it's implemented in 5.1 and above. I know for a fact that it's in Vista though. :laugh: All my calls to NtSetSystemPowerState have been returning 0xC00000EF. STATUS_NOT_IMPLEMENTED is 0xC0000002. If my research is correct, 0xC00000EF is NT_STATUS_INVALID_PARAMETER_1 :( Anyone have clues regarding the parameters? I can't find any calls to it inside anything.
modified on Saturday, March 14, 2009 6:53 PM