linux-kernel - Re: [PATCH v6 4/6] arm64: add seccomp syscall for compat task

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Message-ID: <20140826175303.GE23445@arm.com>
Date:	Tue, 26 Aug 2014 18:53:03 +0100
From:	Will Deacon <will.deacon@....com>
To:	AKASHI Takahiro <takahiro.akashi@...aro.org>
Cc:	"keescook@...omium.org" <keescook@...omium.org>,
	Catalin Marinas <Catalin.Marinas@....com>,
	"dsaxena@...aro.org" <dsaxena@...aro.org>,
	"arndb@...db.de" <arndb@...db.de>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"linaro-kernel@...ts.linaro.org" <linaro-kernel@...ts.linaro.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v6 4/6] arm64: add seccomp syscall for compat task

On Thu, Aug 21, 2014 at 09:56:43AM +0100, AKASHI Takahiro wrote:
> This patch allows compat task to issue seccomp() system call.
> 
> Signed-off-by: AKASHI Takahiro <takahiro.akashi@...aro.org>
> ---
>  arch/arm64/include/asm/unistd.h   |    2 +-
>  arch/arm64/include/asm/unistd32.h |    3 +++
>  2 files changed, 4 insertions(+), 1 deletion(-)
> 
> diff --git a/arch/arm64/include/asm/unistd.h b/arch/arm64/include/asm/unistd.h
> index 4bc95d2..cf6ee31 100644
> --- a/arch/arm64/include/asm/unistd.h
> +++ b/arch/arm64/include/asm/unistd.h
> @@ -41,7 +41,7 @@
>  #define __ARM_NR_compat_cacheflush	(__ARM_NR_COMPAT_BASE+2)
>  #define __ARM_NR_compat_set_tls		(__ARM_NR_COMPAT_BASE+5)
>  
> -#define __NR_compat_syscalls		383
> +#define __NR_compat_syscalls		384
>  #endif
>  
>  #define __ARCH_WANT_SYS_CLONE
> diff --git a/arch/arm64/include/asm/unistd32.h b/arch/arm64/include/asm/unistd32.h
> index e242600..2922c40 100644
> --- a/arch/arm64/include/asm/unistd32.h
> +++ b/arch/arm64/include/asm/unistd32.h
> @@ -787,3 +787,6 @@ __SYSCALL(__NR_sched_setattr, sys_sched_setattr)
>  __SYSCALL(__NR_sched_getattr, sys_sched_getattr)
>  #define __NR_renameat2 382
>  __SYSCALL(__NR_renameat2, sys_renameat2)
> +#define __NR_seccomp 383
> +__SYSCALL(__NR_seccomp, sys_seccomp)
> +

This will need rebasing onto -rc2, as we're hooked up two new compat
syscalls recently.

Will
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