linux-kernel - Re: [PATCH v2] generic syscalls: Wire up statx syscall

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Date:   Wed, 15 Mar 2017 22:26:32 +0000
From:   James Hogan <james.hogan@...tec.com>
To:     Stafford Horne <shorne@...il.com>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Al Viro <viro@...iv.linux.org.uk>,
        David Howells <dhowells@...hat.com>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will.deacon@....com>,
        ARM Kernel List <linux-arm-kernel@...ts.infradead.org>,
        Arnd Bergmann <arnd@...db.de>, linux-arch@...r.kernel.org
Subject: Re: [PATCH v2] generic syscalls: Wire up statx syscall

On 13 March 2017 at 14:45, Stafford Horne <shorne@...il.com> wrote:
> The new syscall statx is implemented as generic code, so enable it
> for architectures like openrisc which use the generic syscall table.
>
> Fixes: a528d35e8bfcc ("statx: Add a system call to make enhanced file info available")
> Cc: Thomas Gleixner <tglx@...utronix.de>
> Cc: Al Viro <viro@...iv.linux.org.uk>
> Cc: David Howells <dhowells@...hat.com>
> Cc: Catalin Marinas <catalin.marinas@....com>
> Cc: Will Deacon <will.deacon@....com>
> Cc: linux-arm-kernel@...ts.infradead.org
> Signed-off-by: Stafford Horne <shorne@...il.com>
> ---
> Change in v2:
>  - Add a few more Cc's to get attention of the right people
>  - Add a fixes tag for better audit
>
>  include/uapi/asm-generic/unistd.h | 4 +++-
>  1 file changed, 3 insertions(+), 1 deletion(-)
>
> diff --git a/include/uapi/asm-generic/unistd.h b/include/uapi/asm-generic/unistd.h
> index 9b1462e..a076cf1 100644
> --- a/include/uapi/asm-generic/unistd.h
> +++ b/include/uapi/asm-generic/unistd.h
> @@ -730,9 +730,11 @@ __SYSCALL(__NR_pkey_mprotect, sys_pkey_mprotect)
>  __SYSCALL(__NR_pkey_alloc,    sys_pkey_alloc)
>  #define __NR_pkey_free 290
>  __SYSCALL(__NR_pkey_free,     sys_pkey_free)
> +#define __NR_statx 291
> +__SYSCALL(__NR_statx,     sys_statx)
>
>  #undef __NR_syscalls
> -#define __NR_syscalls 291
> +#define __NR_syscalls 292

Out of interest, anybody know OTOH which other stat syscalls statx
supersedes (such that they could at some point be disabled by default
in asm-generic for new arches, and implemented in userspace)?

Cheers
-- 
James Hogan