Cygwin/Wine : status update

[Sylvain Petreolle]

Cygwin bash currently fails to execute due to OpenProcessToken.

Looking in source, I see that advapi32.OpenProcessToken calls
ntdll.NtOpenProcessToken.

This functions is a stub that returns always false today.

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[Greg Turner]

On Tuesday 19 November 2002 07:18 pm, Sylvain Petreolle wrote:
> Cygwin bash currently fails to execute due to OpenProcessToken.
>
> Looking in source, I see that advapi32.OpenProcessToken calls
> ntdll.NtOpenProcessToken.
>
> This functions is a stub that returns always false today.

OpenProcessToken is an NT-only feature, right?  What does Cygwin do for 
windows 9x?

-- 
gmt

"War is an ugly thing, but not the ugliest of things;
the decayed and degraded state of moral and patriotic
feeling which thinks that nothing is worth war is much
worse. A man who has nothing for which he is willing
to fight; nothing he cares about more than his own
personal safety; is a miserable creature who has no
chance of being free, unless made and kept so by the
exertions of better persons than himself."

-- John Stuart Mill

[David Fraser]

Greg Turner wrote:
> On Tuesday 19 November 2002 07:18 pm, Sylvain Petreolle wrote:
> > Cygwin bash currently fails to execute due to OpenProcessToken.
> >
> > Looking in source, I see that advapi32.OpenProcessToken calls
> > ntdll.NtOpenProcessToken.
> >
> > This functions is a stub that returns always false today.
>
> OpenProcessToken is an NT-only feature, right?  What does Cygwin do for 
> windows 9x?

Cygwin has a struct, wincap, which indicates what Windows capabilities 
are present.
This has a member, has_security, which is checked before any security 
functions like OpenProcessToken
are used.
The struct is initialized in wincap.cc which calls GetVersionEx to 
determine the version
of Windows being used, then copies a const version of the wincap struct 
for that
Windows version onto the actual struct used. This has has_security set 
to false for non-NT versions
of Windows.
So presumably setting the Wine version should avoid this... haven't 
checked though,
just looked at the cygwin sources

David

[Sylvain Petreolle]

David, you have a point.
The problem goes away when setting version to winme.

Now bash fails like this.

C>bash --login -i                                                      
        
    157 [main] bash -141743176 sync_with_child: child 141745160(0x100)
died before initialization with status code 0x0                        
                 
  12021 [main] bash -141743176 sync_with_child: *** child state waiting
for longjmp                                                            
                
bash: fork: Resource temporarily unavailable                           
        
bash-2.05b$ logout  

Looking into the source shows that the problem isn't in bash itself    
                                                               nor in
cygwin dll.(I greped "died")
> Cygwin has a struct, wincap, which indicates what Windows
> capabilities 
> are present.
> This has a member, has_security, which is checked before any security
>
> functions like OpenProcessToken
> are used.
> The struct is initialized in wincap.cc which calls GetVersionEx to 
> determine the version
> of Windows being used, then copies a const version of the wincap
> struct 
> for that
> Windows version onto the actual struct used. This has has_security
> set 
> to false for non-NT versions
> of Windows.
> So presumably setting the Wine version should avoid this... haven't 
> checked though,
> just looked at the cygwin sources
>
> David

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