permissions on .exe files

[Hemal Pandya]

Thanks for your response , Igor.

On 7/21/06, Igor Peshansky wrote:
> On Fri, 21 Jul 2006, Hemal Pandya wrote:
>
> > Hello,
> >
> > If I create a file somefile.exe "outside cygwin" then cygwin reports
> > that it is executable. But if the file is created by cygwin then it
> > does not become executable unless explicitly set.
>
> This is correct and expected behavior.

With your explanation now I can understand that it is so.

>
> > One implication of this is that when I extract a .zip using cygwin
> > unzip then the .exe, .dll, .bat etc do not get the executable
> > permission.
>
> That's a problem with the ZIP format, which does not keep permissions.
> Try "tar".

Unfortunately I do not have control over the file creation. Regarding
permissions, zipinfo does report file permissions so they probably are
getting stored in the zip file.

>
> > Is there a way to tell cygwin to assign u+x for the files created from
> > cygwin for which it would have otherwise assumed this permission?
>
> Cygwin does not assume any permissions.  Neither does Windows.  However,
> Windows does have ACL inheritance rules that set everything to be
> executable.

I had failed to realize that windows makes everything executable. I
agree it is very annoying.

I guess I'll do "chmod -R u+x *exe *dll *bat" after the unzip.

Again, thanks for your help. It solved my doubt and suggested the
right approach.

>
> You can tell Cygwin to use default Windows permissions by temporarily
> setting CYGWIN to nontsec, i.e., run
>
> CYGWIN=nontsec unzip somefile.zip
>
> This would not assign u+x, but rather a+x.  There is no way that I know of
> to get Cygwin to automatically assign only u+x.
>
> > hpandya@hpandya-xp2 /tmp/ll Fri Jul 21 11:47:43 2006
> > $ cmd /c "dir > in_windows.exe"
> > hpandya@hpandya-xp2 /tmp/ll Fri Jul 21 11:47:50 2006
> > $ ls > in_cygwin.exe
> > hpandya@hpandya-xp2 /tmp/ll Fri Jul 21 11:47:58 2006
> > $ ls -l
> > total 2
> > -rw-r--r-- 1 hpandya &-Users  29 Jul 21 11:47 in_cygwin.exe
> > -rwxr-xr-x 1 hpandya &-Users 345 Jul 21 11:47 in_windows.exe
> > hpandya@hpandya-xp2 /tmp/ll Fri Jul 21 11:48:02 2006
>
> BTW, the above would happen even if you didn't have the .exe extension.
> Windows does not do special magic for .exe files -- it just makes
> everything executable.  A pretty annoying feature, if you ask me.
>         Igor

- hemal

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