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Message-ID: <CA+TsHUCyrYGyKNgjPicoG88WHwJjDQFaONGDxXFwDBK0x_s0pw@mail.gmail.com>
Date: Wed, 27 May 2015 13:01:43 +0530
From: Sayantan Datta <std2048@...il.com>
To: john-dev <john-dev@...ts.openwall.com>
Subject: Signal handling within john formats.
Hi all,
I'd like to use signal handling functions - alarm() and sigaction() within
a format. Howver using them disrupts status checking, even if I restore to
the previous signal handler after I'm done using signals.
The sequence of function calls within the format is as follows:
sigaction(SIGALARM, &set_signal, &old_signal);
alarm(x);
.
.
.
alarm(0);
sigaction(SIGALARM, &old_signal, NULL);
But the above sequence fails to restore normal JtR signal handling. So,
what's missing?
Regards,
Sayantan
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