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Re: fetchmail: does it lock ? I don't think so.



Hi,

qpopper is locking the mailbox you are fetching from. I don't know about
the mailbox fetchmail is writing to.

Shachar.

On Sat, 6 Feb 1999, Peter L. Peres wrote:

> 
> Hello,
> 
>   It's me again (g). I am trying to set up fetchmail in a way that
> prevents it from losing mail. Question: does fetchmail lock itself/its
> session so another fetchmail won't run concurrently with it (assuming
> retrieval from multiple hosts) or does the POP/other daemon have the
> responsability to maintain atomicity ? The fetchmail runs as some user but
> a root crontab script can fight with it. The docs say that there is a
> per-user lock when running. 
> 
>   What happens when more than one client tries to access the same mailbox
> on a POP3 etc server ? Is this documented somewhere ? In the protocol RFCs
> ?
> 
>   What is the most popular locking method excepting lock files for a
> non-file resource such as a database or table ? A registry + a set of
> methods ? (flameproof suit on). If I remember well, in Linux syscalls are
> interruptible so simple lock files are a bad idea anyway, no ?
> 
> tia,
> 
> 	Peter 
> 
> PS: This question is directly related to Linux of course.
> 
> 

Shachar Tal
-------------
finger shachar@vipe.technion.ac.il for contact info or PGP key.