Re: cygstart getting The specified file was not found

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

On Tue, 12 Dec 2006, Michael Schaap wrote:

> Michael Schaap wrote:
> > Corinna Vinschen wrote:
> > >
> > > Does cygstart use CreateProcess and/or GetCurrentDirectory instead of
> > > fork/exec/getcwd?
> > >
> > > If so, cygstart will have to call cygwin_internal(CW_SYNC_WINENV)
> > > before using the native Windows functions.
> >
> > No, it uses ShellExecute (see "cygstart --reference").  It does indeed
> > need to sync the environment, but it does this using its own code.
> > (Predates cygwin_internal(CW_SYNC_WINENV); I still need to change
> > cygstart some day to use it.)
> >
> > However, this is unrelated to this problem, things go wrong long
> > before that.  It appears that cygwin_conv_to_win32_path incorrectly
> > determines the current working directory.
> >
> > It is called as follows:
> >
> >     cygwin_conv_to_win32_path(aPath, winPath);
> >
> > where aPath == "hello.txt".
> >
> > The current directory is "/cygdrive/c/user" =~ "c:\user", but
> > cygwin_conv_to_win32_path thinks that:
> >
> >     normalize_posix_path: /cygdrive/c/WINDOWS/system32/hello.txt =
> > normalize_posix_path (hello.txt)
> >
> > (See Eric's messages for more debugging info.)
>
> I just installed the 2006-12-11 snapshot, and I can reproduce this. Like
> Eric, I'm on XP SP2.
>
> I went down the list of snapshots, and it looks like this was introduced
> some time in between 2006-11-27 and 2006-11-30.

I just looked at the ChangeLog between those two snapshots.  The following
looks like the culprit change:

2006-11-29  Corinna Vinschen  <corinna@vinschen.de>

        * path.cc [snip]
        (cwdstuff::init): Initialize cygheap->cwd with current working
        directory.  Change to windows_system_directory afterwards.

With that change, any use of non-Cygwin calls, e.g., GetCurrentDirectory,
or ShellExecute (which calls GetCurrentDirectory under the covers, it
seems) will produce the problem you're seeing (Windows system directory as
the current directory).

So it looks like you ought to call cygwin_internal(CW_SYNC_WINENV) after
all, as it syncs more than the environment variables...
	Igor
-- 
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