Re: fork error in Windows 2003 running as normal user

[Igor Pechtchanski <pechtcha at cs dot nyu dot edu>]

On Wed, 23 Mar 2005, Igor Pechtchanski wrote:

> On Wed, 23 Mar 2005, Kris Thielemans wrote:
>
> > Corrado Labinaz <corradolab <at> virgilio.it> writes:
> >
> > > I've installed latest (1.5.13) cygwin on Windows Server 2003.
> > > It works fine while logged on as Administrator.
> > > Launching Bash as a "normal" User give the following error:
> > >
> > >       3 [main] bash 3252 fork_parent: child 3260 died waiting for longjmp
> > > before
> > >  initialization
> > > bash: fork: Bad file descriptor
> >
> > Hi
> >
> > I have exactly the same under Windows XP Home sp2.
>
> Not the same problem at all.
>
> > In fact, I had a lot of trouble to get cygwin to work earlier for non-admin
> > users on this machine. The permissions were always wrong (e.g. files in /bin
> > were only executable for administrators, files in "Documents and Settings"
> > were all owned by the administrator etc). I fixed all (?) that by using
> > chmod and chown and got it to work. Then I updated to the latest cygwin and
> > am stuck again. I still strongly suspect a permission problem, but cannot
> > find which one.
>
> What does "getfacl /bin" report?  I'd bet there isn't an inheritable
> execute permission for everyone.  If this is the case, all the DLLs will
> not be executable for "other", which is consistent with your symptoms
> below.
>
> > Some more info:
> >
> > - going to a windows cmd prompt, cd \cygwin\bin, executing just bash, does
> > not give this error, but I'm still stuck with that error message when
> > running any executable e.g. ls
> >
> > - from a windows cmd prompt, executing some other cygwin utilities gives the
> > following:
> > C:\cygwin\bin\id.exe (3876): *** could not load user32, Win32 error 1114
> >
> > Win32 error 1114 is apparently
> > "A dynamic link library (DLL) initialization routine failed."
>
> It's probably not "user32" (as bash also uses it).  Try "cygintl-3.dll" or
> "cygiconv-2.dll".
>
> > So, I checked permissions of user32.dll in c:\windows\system32. Weirdly
> > enough, all dll and exe there are listed as owned by adminstrators, and
> > rwxrwx---. That does not make any sense to me. Anyway, I tried then to chmod
> > +rx user32.dll (and some other dlls) but that didn't change the above error,
> > nor solve the problem.
> >
> > - ssh non-admin-user@machine (e.g. when logged in as admin on machine) works
> > fine. I can then do ls etc without problems. (isn't that weird?)
>
> It is.  Probably because some of SYSTEM's credentials leak through to the
> underlying shell...
>
> > - cygcheck -s as non-admin user says there are 2 cygwin1.dll in the path
> > (but both listed as .\cygwin1.dll). cygcheck -s as admin users does not
> > complain at all. and of course, I can find only 1 in c:\cygwin\bin anyway.
> > (Maybe this is because cygcheck has some problems? It obviously complains
> > about running id.exe for instance).
>
> This is a superfluous message in this case.  It appears whenever cygcheck
> is run from /bin, since cygcheck always checks the current directory
> independently of the PATH.  Arguably, it's a cygcheck bug.
>
> Either you ran admin's cygcheck from a different directory, or "."
> is not in the PATH for admin...  According to your cygcheck output, it's
> the former.
>
> FYI, it's better to run "cygcheck -svr" instead of just "cygcheck -s", as
> you seem to have done.
>
> > I've attached both cygchecks.
> > Any help will be greatly appreciated.
>
> Try "chmod a+x /bin/*.dll" and see if that solves your problem.  If yes,
> then "setfacl -m d:m:rwx,d:g:rwx,d:o:r-x /bin" should help for future

Make that "setfacl -m d:m:rwx,d:g::rwx,d:o:r-x /bin".  Sigh.

> updates...
> HTH,
> 	Igor

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