Re: [Mingw-msys] BitKeeper

[Wayne S. <ws...@bi...>]

From: Earnie Boyd <ea...@us...>
> On another note, I do warn that using Cygwin binaries from with MSYS is 
> liable to cause you problems.  I happen to know that at the moment the 
> mount table that a Cygwin process uses if started from an MSYS process 
> will be the one that MSYS has mapped.  This should be able to fixed, I 
> would love to have it work correctly.

Interesting.

I just did some checking.

I put this code in a bash script that I call using MSYS's bash from
inside my bk binary.

   echo msys mounts
   mount
   echo cygwin mounts
   /c/cygwin/bin/bash -c mount
   PATH="$BK_OLDPATH"
   echo oldpath cygwin mounts
   /c/cygwin/bin/bash -c mount
   exit 0

Here is the output:

   msys mounts
   c:\bkwin\src\gnu\bin on /usr/bin type user (binmode,cygexec,noumount)
   c:\bkwin\src\gnu\bin on /bin type user (binmode,cygexec,noumount)
   c:\bkwin\src\gnu on / type user (binmode,noumount)
   c:\bkwin\src\gnu on /usr type user (binmode,noumount)
   a: on /a type user (binmode,noumount)
   c: on /c type user (binmode,noumount)
   d: on /d type user (binmode,noumount)
   e: on /e type user (binmode,noumount)

   cygwin mounts
   c:\bkwin\src\gnu\bin on /usr/bin type user (binmode,cygexec,noumount)
   c:\bkwin\src\gnu\bin on /bin type user (binmode,cygexec,noumount)
   c:\bkwin\src\gnu on / type user (binmode,noumount)
   c:\bkwin\src\gnu on /usr type user (binmode,noumount)
   a: on /a type user (binmode,noumount)
   c: on /c type user (binmode,noumount)
   d: on /d type user (binmode,noumount)
   e: on /e type user (binmode,noumount)

   oldpath cygwin mounts
   c:\cygwin\bin on /usr/bin type system (binmode)
   c:\cygwin\lib on /usr/lib type system (binmode)
   c:\cygwin on / type system (binmode)
   c:\foo on /mytmp type system (binmode)
   c: on /cygdrive/c type user (binmode,noumount)
   e: on /cygdrive/e type user (binmode,noumount)


Notice that when I restore the PATH before calling at external program
everything works correctly.  So yes I see the bug you are talking
about, but I appear to have dodged it. ;-)

No... on further investigation, I think cygwin is restoring its mount
table properly. It is just that in the second case I am running
cygwin's bash, but msys's mount.

This
	 /c/cygwin/bin/bash -c /c/cygwin/bin/mount
returns the expected output.

It is irresponsible to run a cygwin program without restoring its
directories to the path.

Am I missing how to trigger the bug you are talking about?

-Wayne