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Date: Thu, 4 Nov 2010 16:28:28 +0000
From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: Gregory Giguashvili <Gregory.Giguashvili@PDGM.com>
Cc: "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: Change signal mask after vfork/clone system call
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> Now, I could unmask signals for the thread calling vfork, but it seems not a signal-safe solution to me because signals may arrive to this thread until I reestablish the mask. pthread_atfork call comes to rescue to address such issues for fork, but there seems to be nothing for vfork call.

Oh you are wrapping buggy apps ?

vfork
exec a tiny app which fixes the signals and execs the proper app

or fix the apps being run...