linux-kernel - Re: [RFC PATCH] ptrace: add PTRACE_GET_SYSCALL

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Message-ID: <20181107155052.GA27736@altlinux.org>
Date:   Wed, 7 Nov 2018 18:50:52 +0300
From:   "Dmitry V. Levin" <ldv@...linux.org>
To:     Andy Lutomirski <luto@...capital.net>
Cc:     Elvira Khabirova <lineprinter@...linux.org>,
        Oleg Nesterov <oleg@...hat.com>,
        Steven Rostedt <rostedt@...dmis.org>,
        Ingo Molnar <mingo@...nel.org>,
        Andy Lutomirski <luto@...nel.org>,
        Eugene Syromyatnikov <esyr@...hat.com>,
        linux-kernel@...r.kernel.org, strace-devel@...ts.strace.io
Subject: Re: [RFC PATCH] ptrace: add PTRACE_GET_SYSCALL_INFO request

On Wed, Nov 07, 2018 at 04:27:51AM +0100, Elvira Khabirova wrote:
[...]
> The structure was chosen according to [2], except for two changes.
> First: instead of an arch field with a value of AUDIT_ARCH_*, a boolean
> is_compat value is returned, because a) not all arches have an AUDIT_ARCH_*
> defined for them,

To be more specific, here is the list of arch subtrees in v4.20-rc1 that
invoke tracehook_report_syscall_entry() but do not provide syscall_get_arch():

arch/arc
arch/c6x
arch/h8300
arch/hexagon
arch/m68k
arch/nds32
arch/nios2
arch/riscv
arch/um
arch/xtensa

Among these trees only m68k has its AUDIT_ARCH_M68K constant defined.


-- 
ldv