linux-kernel - Re: [PATCH v3 01/11] tools/nolibc: remove the old sys

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Message-ID: <20230715114528.GA25953@1wt.eu>
Date:   Sat, 15 Jul 2023 13:45:28 +0200
From:   Willy Tarreau <w@....eu>
To:     Zhangjin Wu <falcon@...ylab.org>
Cc:     arnd@...db.de, linux-kernel@...r.kernel.org,
        linux-kselftest@...r.kernel.org, thomas@...ch.de
Subject: Re: [PATCH v3 01/11] tools/nolibc: remove the old sys_stat support

On Sat, Jul 15, 2023 at 06:39:41PM +0800, Zhangjin Wu wrote:
> Just read the statx manpage again:
> 
>     https://man7.org/linux/man-pages/man2/statx.2.html
> 
> It shows something about "Linux 4.11, glibc 2.28.
> 
> And 'git grep' shows it is true:
> 
>     $ git grep -r statx v4.11 arch/ include/uapi/asm-generic/unistd.h | grep -E "aarch64|arm|mips|s390|x86|:include/uapi"
>     v4.11:arch/arm/tools/syscall.tbl:397	common	statx			sys_statx
>     v4.11:arch/arm64/include/asm/unistd32.h:#define __NR_statx 397
>     v4.11:arch/arm64/include/asm/unistd32.h:__SYSCALL(__NR_statx, sys_statx)
>     v4.11:arch/mips/include/uapi/asm/unistd.h:#define __NR_statx			(__NR_Linux + 366)
>     v4.11:arch/mips/include/uapi/asm/unistd.h:#define __NR_statx			(__NR_Linux + 326)
>     v4.11:arch/mips/include/uapi/asm/unistd.h:#define __NR_statx			(__NR_Linux + 330)
>     v4.11:arch/mips/kernel/scall32-o32.S:	PTR	sys_statx
>     v4.11:arch/mips/kernel/scall64-64.S:	PTR	sys_statx
>     v4.11:arch/mips/kernel/scall64-n32.S:	PTR	sys_statx			/* 6330 */
>     v4.11:arch/mips/kernel/scall64-o32.S:	PTR	sys_statx
>     v4.11:arch/s390/include/uapi/asm/unistd.h:#define __NR_statx		379
>     v4.11:arch/s390/kernel/compat_wrapper.c:COMPAT_SYSCALL_WRAP5(statx, int, dfd, const char __user *, path, unsigned, flags, unsigned, mask, struct statx __user *, buffer);
>     v4.11:arch/s390/kernel/syscalls.S:SYSCALL(sys_statx,compat_sys_statx)
>     v4.11:arch/x86/entry/syscalls/syscall_32.tbl:383	i386	statx			sys_statx
>     v4.11:arch/x86/entry/syscalls/syscall_64.tbl:332	common	statx			sys_statx
>     v4.11:include/uapi/asm-generic/unistd.h:#define __NR_statx 291
>     v4.11:include/uapi/asm-generic/unistd.h:__SYSCALL(__NR_statx,     sys_statx)
> 
> both riscv and loongarch use the generic unistd.h, so, all of our
> supported archs should work as-is. riscv itself is added from v4.15,
> loongarch itself is added from v5.19.

So that's perfect, thank you!

Willy