Re: WWW Form Bug Report: "SIGALRM handling in mod_proxy" on UnixWare

[Chuck Murcko <ch...@telebase.com>]

Thanks for the report. I'll try to get this fix into the 1.1 release.

lampa@fee.vutbr.cz liltingly intones:
> 
> Submitter: lampa@fee.vutbr.cz
> Operating system: UnixWare, version: 
> Version of Apache Used: 1.1b4
> Extra Modules used: 
> URL exhibiting problem: 
> 
> Symptoms:
> --
> The change of SIGALRM handling in mod_proxy.c
> is probably not correct. Blocking timeout using
> block_alarms() doesn't disable SIGALRM arrival.
> If this signal arrives, it interrupts some
> kernel call and this will end with EINTR.
> Almost no kernel call in mod_proxy checks this
> (I mean directory traversal, stat, unlink, etc.).
> 
> Solution: 
> 1. really call alarm(0)
> 2. test EINTR everywhere
> 3. use sigaction() and SA_RESTART (not supported
>    on all systems, but works at least on SVR4, Linux,
>    and BSD)
> 
> --
> 
> Backtrace:
> --
> 
> --
> 

chuck
Chuck Murcko	N2K Inc.	Wayne PA	chuck@telebase.com
And now, on a lighter note:
Real programmers don't comment their code.  It was hard to write, it
should be hard to understand.