[Rpm-maint] RFC: Unblocking of signals within rpm

[Panu Matilainen]

On Thu, 19 Jul 2007, Michael Schroeder wrote:

> On Thu, Jul 19, 2007 at 12:58:29PM +0300, Panu Matilainen wrote:
>>
>> Attached patch turns the signal handling within rpmdb upside down: we no
>> longer run the whole damn thing with termination signals blocked with
>> occasional checking possibly resulting in exit() from deep within rpmlib,
>> but instead have an active signal handler that will mop up any open
>> transactions and iterators and pass on the signal to caller.
>
> Whoa, doing complex things in a signal handler is very dangerous.
> You can interrupt rpm deep inside some glibc function like "malloc".

Yes, but then this is a terminating signal handler, and AFAICT does just 
what's described in glibc manual as the cleanest way to handle this:
http://www.gnu.org/software/libc/manual/html_node/Termination-in-Handler.html

 	- Panu -