Problem with setuid/execv on Cygwin/Windows 7

Corinna Vinschen corinna-cygwin@cygwin.com
Fri Nov 9 09:18:00 GMT 2012


On Nov  9 10:08, Corinna Vinschen wrote:
> On Nov  9 08:59, Laurent Cocault wrote:
> > Hi Cygwin community,
> > 
> > I am currently facing a problem with the combination of setuid/execv on a Cygwin/Windows 7.
> > [...]
> >     char* args[1];
> >     args[0] = NULL;
> >     status = execv("/bin/bash", args);
> 
> This is wrong.  You should at least set args[0] since that what becomes
> argv[0] in the child process:
> 
>       char* args[2];
>       args[1] = "bash";
>       args[2] = NULL;

Ouch.  ENOCOFFEE.  Make that

        args[0] = "bash";
        args[1] = NULL;

>       status = execv("/bin/bash", args);


Corinna

-- 
Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Project Co-Leader          cygwin AT cygwin DOT com
Red Hat

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