linux-kernel - Re: [RFC][PATCH][v2] Define/use siginfo_from_ancestor

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20081119012207.GA19092@us.ibm.com>
Date:	Tue, 18 Nov 2008 17:22:07 -0800
From:	Sukadev Bhattiprolu <sukadev@...ux.vnet.ibm.com>
To:	Oleg Nesterov <oleg@...hat.com>
Cc:	ebiederm@...ssion.com, daniel@...ac.com, xemul@...nvz.org,
	containers@...ts.osdl.org, linux-kernel@...r.kernel.org
Subject: Re: [RFC][PATCH][v2] Define/use siginfo_from_ancestor_ns()


| 
| > +static inline int siginfo_from_ancestor_ns(siginfo_t *info)
| > +{
| > +	return SI_FROMUSER(info) && (info->si_pid == 0);
| > +}
| 
| Yes, this is problem... I doubt we can rely on !si_pid here.
| More on this later.

BTW, rather than clearing SIG_FROM_USER in send_signal(), can we
keep it till we dequeue the signal ? Yes, collect_signal() would
need to consider this flag. But when we dequeue, we can note that
it was from user and use that in the siginfo_from_ancestor() ?

Sukadev
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/