Developers of Sympa

[IKEDA Soji <address@concealed>]

On Tue, 06 Aug 2013 16:36:01 +0200
Guillaume Rousse <address@concealed> wrote:

> Le 05/08/2013 15:52, IKEDA Soji a écrit :
> >> Bascally, those PID files or STDERR files are both temporary files of
> >> the same class: they normally exist only during the lifetime of a single
> >> process, and should be removed during normal process termination. If
> >> they are left behind, that's because a crash occured, and they should be
> >> removed on next process startup. So I think it makes sense to host both
> >> kind of files on /var/run/sympa, and to use a single build-time
> >> configuration directive for it. It could use a better name than PIDDIR,
> >> however, such as RUNDIR for instance.
> >
> > It's in sense that PID files will be removed when the daemons
> > stopeed normally.
> As does the stderr ones, according to my own understanding of their purpose.
> 
> So, what's about my proposal ?
> - use File::Temp for all create-and-forget files

File::Temp seems to cleanup files even in case of abnormal
termination (e.g. runtime error by a typo in method names).
On PID files and STDERR outputs, no traces of crash can't be
left.

However, this module will be useful for other kind of temporary
files discussed below.

> - deprecated tmpdir configuration variable
> - rename --piddir configure switch to --rundir
> - use RUNDIR for both pid and stderr files

The mountpoint for PID files does not always intend files with
gradual increase or large mass.  I suppose these two would be
defined separately.

There is the other use of tmpdir which may be rather primary use:
Saving messages to feed them to external utilities (MHOnArc,
antivirus, openssl, ...).  Though generic temporary partition such
as /var/tmp may be used, a dedicated place for sensitive data may
be desirable.

So, I suppose tmpdir parameter is useful and it would be distinct
from PIDDIR.


Regards,

--- Soji

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