Re: [COMMITTERS] pgsql: Use symbolic names not octal constants for file permission flags

On Sat, Dec 11, 2010 at 17:55, Tom Lane <tgl@sss.pgh.pa.us> wrote:
> Magnus Hagander <magnus@hagander.net> writes:
>> On Sat, Dec 11, 2010 at 17:38, Tom Lane <tgl@sss.pgh.pa.us> wrote:
>>> No, it isn't.  There's an apparently-useless definition of _S_IRWXU
>>> there, but no S_IRWXU.
>
>> Hmm. You're right, of course.
>
>> A search on my windows box finds the text string S_IRWXU in the
>> following "*.h" files across the whole filesystem:
>> c:\perl\lib\CORE\perl.h
>> c:\perl64\lib\CORE\perl.h
>> c:\pgsql\src\include\pg_config_os.h
>> c:\pgsql\src\include\port\win32.h
>
>> that's it.
>
> OK, now I'm really confused.  We have at least two questions:
>
> 1. How did all those pre-existing references to S_IRXWU compile?

Yeah, that's weird. IIRC (I stopped looking for the moment, need a
step back) some of them were protected by #ifndef WIN32, but not all
of them..


> 2. Why didn't the previously hard-wired constants passed to chmod
> and umask fail on Windows?  The M$ documentation I can find at the
> moment suggests that *only* _S_IREAD and _S_IWRITE bits are allowed
> in the inputs to those functions, which apparently is untrue or none
> of this code would have executed successfully.

Probably it ignores any flags it doesn't know about?

--
 Magnus Hagander
 Me: http://www.hagander.net/
 Work: http://www.redpill-linpro.com/