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Re: [patch] Quota support for pam_mkhomedir



On Mon, 18 Feb 2002, Brian Masney wrote:

>    Here is a patch to pam_mkhomedir.c from PAM 0.72 that adds quota support. 
> 
> Brian
>    
> --- Linux-PAM-0.72/modules/pam_mkhomedir/pam_mkhomedir.c.old	Wed Feb 13 11:39:45 2002
> +++ Linux-PAM-0.72/modules/pam_mkhomedir/pam_mkhomedir.c	Wed Feb 13 12:55:17 2002
> @@ -25,6 +25,18 @@
> [...]

While the principle of adding quotas via PAM may be desirable, could I
urge caution and care about how it is implemented?

The programming interface to quotas to highly variant across different
versions of UN*X.  I understand it even differs across versions and
releases of some Linux flavours.

A useful starting point for attempting such an implementation might be the
"quotas.c" file from the "samba" product.  This runs on a wide variety of
UN*X platforms, and even the briefest glimpse at their code shows the
portability problems that need to be addressed.

So yes, by all means add quota support.  But we need to think a little
more about exactly how and where.

A related issue: should this support be in "pam_mkhomedir.c" itself?
Or perhaps rather in a separate PAM module?  One advantage of separating
it is this portability aspect: "pam_mkhomedir.c" is clean and portable,
whereas anything programming quotas will, of necessity, have to be
considerably less clean to achieve portability.

Hope that helps your considerations.


-- 

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