linux-kernel - Re: [PATCH 09/14] nds32: define syscall_get

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Date:   Tue, 5 Mar 2019 07:49:54 +0800
From:   Vincent Chen <deanbo422@...il.com>
To:     "Dmitry V. Levin" <ldv@...linux.org>
Cc:     Greentime Hu <green.hu@...il.com>,
        Elvira Khabirova <lineprinter@...linux.org>,
        Eugene Syromyatnikov <esyr@...hat.com>,
        Oleg Nesterov <oleg@...hat.com>,
        Andy Lutomirski <luto@...nel.org>,
        Paul Moore <paul@...l-moore.com>, linux-audit@...hat.com,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 09/14] nds32: define syscall_get_arch()

Dmitry V. Levin <ldv@...linux.org> 於 2019年2月27日 週三 下午11:30寫道：

>
> syscall_get_arch() is required to be implemented on all architectures
> in addition to already implemented syscall_get_nr(),
> syscall_get_arguments(), syscall_get_error(), and
> syscall_get_return_value() functions in order to extend the generic
> ptrace API with PTRACE_GET_SYSCALL_INFO request.
>
> Acked-by: Paul Moore <paul@...l-moore.com>
> Cc: Elvira Khabirova <lineprinter@...linux.org>
> Cc: Eugene Syromyatnikov <esyr@...hat.com>
> Cc: Greentime Hu <green.hu@...il.com>
> Cc: Vincent Chen <deanbo422@...il.com>
> Cc: Oleg Nesterov <oleg@...hat.com>
> Cc: Andy Lutomirski <luto@...nel.org>
> Cc: linux-audit@...hat.com
> Signed-off-by: Dmitry V. Levin <ldv@...linux.org>
> ---
>  This is just a gentle ping, the patch is unchanged.
>
>  arch/nds32/include/asm/syscall.h | 9 +++++++++
>  include/uapi/linux/audit.h       | 2 ++
>  2 files changed, 11 insertions(+)
>
> diff --git a/arch/nds32/include/asm/syscall.h b/arch/nds32/include/asm/syscall.h
> index f7e5e86765fe..cc56a3962f8b 100644
> --- a/arch/nds32/include/asm/syscall.h
> +++ b/arch/nds32/include/asm/syscall.h
> @@ -5,6 +5,7 @@
>  #ifndef _ASM_NDS32_SYSCALL_H
>  #define _ASM_NDS32_SYSCALL_H   1
>
> +#include <uapi/linux/audit.h>
>  #include <linux/err.h>
>  struct task_struct;
>  struct pt_regs;
> @@ -185,4 +186,12 @@ void syscall_set_arguments(struct task_struct *task, struct pt_regs *regs,
>
>         memcpy(&regs->uregs[0] + i, args, n * sizeof(args[0]));
>  }
> +
> +static inline int
> +syscall_get_arch(void)
> +{
> +       return IS_ENABLED(CONFIG_CPU_BIG_ENDIAN)
> +               ? AUDIT_ARCH_NDS32BE : AUDIT_ARCH_NDS32;
> +}
> +
>  #endif /* _ASM_NDS32_SYSCALL_H */
> diff --git a/include/uapi/linux/audit.h b/include/uapi/linux/audit.h
> index b1602dcc13bc..1568ddc1c945 100644
> --- a/include/uapi/linux/audit.h
> +++ b/include/uapi/linux/audit.h
> @@ -401,6 +401,8 @@ enum {
>  #define AUDIT_ARCH_MIPSEL64    (EM_MIPS|__AUDIT_ARCH_64BIT|__AUDIT_ARCH_LE)
>  #define AUDIT_ARCH_MIPSEL64N32 (EM_MIPS|__AUDIT_ARCH_64BIT|__AUDIT_ARCH_LE|\
>                                  __AUDIT_ARCH_CONVENTION_MIPS64_N32)
> +#define AUDIT_ARCH_NDS32       (EM_NDS32|__AUDIT_ARCH_LE)
> +#define AUDIT_ARCH_NDS32BE     (EM_NDS32)
>  #define AUDIT_ARCH_OPENRISC    (EM_OPENRISC)
>  #define AUDIT_ARCH_PARISC      (EM_PARISC)
>  #define AUDIT_ARCH_PARISC64    (EM_PARISC|__AUDIT_ARCH_64BIT)
> --
> ldv

Thanks for fixing this.

Acked-by Vincent Chen