[pmwiki-users] umask'ing wiki.d

[Patrick R. Michaud]

On Thu, Feb 03, 2005 at 12:14:02AM +1300, Robin wrote:
> On Tuesday 01 February 2005 05:19, Patrick R. Michaud wrote:
> > Setting umask(007) as default is probably a good idea; I just need to think
> > about it a little more to make sure I've covered all the bases and
> > won't break a lot of sites by doing that.  :-|
> I was going to reply and say that I don't think it could break anything...and 
> then it went and broke something else on my server.
> 
> It seems that, due to a quirk of PHP, the umask applies to all instances of 
> PHP that are running, even if they run something unrelated. 

I think it must be something else, or at least more subtle than this.  
The umask setting is a per-process setting, thus it's not likely that 
one PHP script can directly affect the settings of *all* PHP scripts.  
At best it could only do so indirectly -- *all* of the following 
would have to be true:
   - PHP runs as an apache filter
   - An apache process handling a request run the script (PmWiki)
     that sets umask
   - That same apache process is then re-used for another PHP script
   - Neither PHP nor Apache reset the process' umask to a standard 
     default value

Ultimately I couldn't find anything on the PHP site mentioning this,
and a *lot* of PHP scripts would be breaking if it were indeed possible
for one script to affect the umask settings of other scripts on the
same host.  So I think there must be something else going on in your 
case (which might bear investigation).

Pm