linux-kernel - Re: [PATCH v15 11/13] ptrace,seccomp: Add PTRACE

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Message-ID: <CABqD9hZ-i-Aa5+7DTmtQ5JU4EAKQfP=HenqgJeFZ2pftQqoUcg@mail.gmail.com>
Date:	Thu, 15 Mar 2012 09:40:13 -0500
From:	Will Drewry <wad@...omium.org>
To:	Indan Zupancic <indan@....nu>
Cc:	linux-kernel@...r.kernel.org, linux-arch@...r.kernel.org,
	linux-doc@...r.kernel.org, kernel-hardening@...ts.openwall.com,
	netdev@...r.kernel.org, x86@...nel.org, arnd@...db.de,
	davem@...emloft.net, hpa@...or.com, mingo@...hat.com,
	oleg@...hat.com, peterz@...radead.org, rdunlap@...otime.net,
	mcgrathr@...omium.org, tglx@...utronix.de, luto@....edu,
	eparis@...hat.com, serge.hallyn@...onical.com, djm@...drot.org,
	scarybeasts@...il.com, pmoore@...hat.com,
	akpm@...ux-foundation.org, corbet@....net, eric.dumazet@...il.com,
	markus@...omium.org, coreyb@...ux.vnet.ibm.com,
	keescook@...omium.org
Subject: Re: [PATCH v15 11/13] ptrace,seccomp: Add PTRACE_SECCOMP support

On Wed, Mar 14, 2012 at 11:49 PM, Indan Zupancic <indan@....nu> wrote:
> Hi Will,
>
> On Thu, March 15, 2012 04:12, Will Drewry wrote:
>> @@ -73,6 +74,7 @@
>>  #define PTRACE_EVENT_VFORK_DONE      5
>>  #define PTRACE_EVENT_EXIT    6
>>  #define PTRACE_EVENT_STOP    7
>> +#define PTRACE_EVENT_SECCOMP 8
>>
>>  #include <asm/ptrace.h>
>>
>> @@ -101,8 +103,9 @@
>>  #define PT_TRACE_EXEC                PT_EVENT_FLAG(PTRACE_EVENT_EXEC)
>>  #define PT_TRACE_VFORK_DONE  PT_EVENT_FLAG(PTRACE_EVENT_VFORK_DONE)
>>  #define PT_TRACE_EXIT                PT_EVENT_FLAG(PTRACE_EVENT_EXIT)
>> +#define PT_TRACE_SECCOMP     PT_EVENT_FLAG(PTRACE_EVENT_SECCOMP)
>>
>> -#define PT_TRACE_MASK        0x000003f4
>> +#define PT_TRACE_MASK        0x00000ff4
>
> Did you miss this bit?

Kinda.  I'll go ahead and switch it to 0xbf4, but PT_TRACE_MASK
doesn't exist in linux-next so this bit disappears on merge.  However,
it is relevant if people are backporting this code, so I'll push a new
rev of it in a bit if I don't get any other comments (or include it in
the next rev if there are comments).

Thanks!
will
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