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From: david.abdurachmanov@gmail.com (David Abdurachmanov)
To: linux-riscv@lists.infradead.org
Subject: [PATCH 1/2] RISC-V: Request stat64 on RV32
Date: Mon, 12 Nov 2018 07:19:02 +0100	[thread overview]
Message-ID: <CAEn-LTpXnzSG-rVVvv_2cbxqY2vTchOKn6M0isRBovoq4jpZGw@mail.gmail.com> (raw)
In-Reply-To: <41e8cb18d321244ab7000f7dc0467b6ebc5cab8f.1541995312.git.zongbox@gmail.com>

On Mon, Nov 12, 2018 at 5:10 AM Zong Li <zongbox@gmail.com> wrote:
>
> The stat64 family that is used on 32-bit architectures to replace
> newstat.
>
> Since commit 67314ec7b0250290cc85eaa7a2f88a8ddb9e8547 ("RISC-V: Request
> newstat syscalls"), the RV32 build fail with undeclared 'sys_fstatat64'
>
> Signed-off-by: Zong Li <zong@andestech.com>
> ---
>  arch/riscv/include/asm/unistd.h | 1 +
>  1 file changed, 1 insertion(+)
>
> diff --git a/arch/riscv/include/asm/unistd.h b/arch/riscv/include/asm/unistd.h
> index eff7aa9..a4aade9 100644
> --- a/arch/riscv/include/asm/unistd.h
> +++ b/arch/riscv/include/asm/unistd.h
> @@ -18,5 +18,6 @@
>
>  #define __ARCH_WANT_NEW_STAT
>  #define __ARCH_WANT_SYS_CLONE
> +#define __ARCH_WANT_STAT64
>  #include <uapi/asm/unistd.h>
>  #include <uapi/asm/syscalls.h>
> --

See: http://lists.infradead.org/pipermail/linux-riscv/2018-November/002087.html

The plan is not to have old stat syscalls and support statx on
riscv32, which is y2038 safe.

The issue you see is a bug in include/uapi/asm-generic/unistd.h.
Marcin (CC) already sent a patch to Arnd (CC) IIRC. Basically without
__ARCH_WANT_NEW_STAT or __ARCH_WANT_STAT64 two macros are not defined:
__NR3264_fstatat and __NR3264_fstat. Which is later used (without any
guards):

763 #define __NR_newfstatat __NR3264_fstatat
764 #define __NR_fstat __NR3264_fstat

WARNING: multiple messages have this Message-ID
From: David Abdurachmanov <david.abdurachmanov@gmail.com>
To: zongbox@gmail.com
Cc: Marcin Juszkiewicz <marcin.juszkiewicz@linaro.org>,
	aou@eecs.berkeley.edu, Arnd Bergmann <arnd@arndb.de>,
	Palmer Dabbelt <palmer@sifive.com>,
	linux-kernel@vger.kernel.org, zong@andestech.com,
	linux-riscv@lists.infradead.org
Subject: Re: [PATCH 1/2] RISC-V: Request stat64 on RV32
Date: Mon, 12 Nov 2018 07:19:02 +0100	[thread overview]
Message-ID: <CAEn-LTpXnzSG-rVVvv_2cbxqY2vTchOKn6M0isRBovoq4jpZGw@mail.gmail.com> (raw)
Message-ID: <20181112061902.2XrK5nJjcYHHEOBbyfbQU0oIBcIKZYGcjgOXo_0yiT0@z> (raw)
In-Reply-To: <41e8cb18d321244ab7000f7dc0467b6ebc5cab8f.1541995312.git.zongbox@gmail.com>

On Mon, Nov 12, 2018 at 5:10 AM Zong Li <zongbox@gmail.com> wrote:
>
> The stat64 family that is used on 32-bit architectures to replace
> newstat.
>
> Since commit 67314ec7b0250290cc85eaa7a2f88a8ddb9e8547 ("RISC-V: Request
> newstat syscalls"), the RV32 build fail with undeclared 'sys_fstatat64'
>
> Signed-off-by: Zong Li <zong@andestech.com>
> ---
>  arch/riscv/include/asm/unistd.h | 1 +
>  1 file changed, 1 insertion(+)
>
> diff --git a/arch/riscv/include/asm/unistd.h b/arch/riscv/include/asm/unistd.h
> index eff7aa9..a4aade9 100644
> --- a/arch/riscv/include/asm/unistd.h
> +++ b/arch/riscv/include/asm/unistd.h
> @@ -18,5 +18,6 @@
>
>  #define __ARCH_WANT_NEW_STAT
>  #define __ARCH_WANT_SYS_CLONE
> +#define __ARCH_WANT_STAT64
>  #include <uapi/asm/unistd.h>
>  #include <uapi/asm/syscalls.h>
> --

See: http://lists.infradead.org/pipermail/linux-riscv/2018-November/002087.html

The plan is not to have old stat syscalls and support statx on
riscv32, which is y2038 safe.

The issue you see is a bug in include/uapi/asm-generic/unistd.h.
Marcin (CC) already sent a patch to Arnd (CC) IIRC. Basically without
__ARCH_WANT_NEW_STAT or __ARCH_WANT_STAT64 two macros are not defined:
__NR3264_fstatat and __NR3264_fstat. Which is later used (without any
guards):

763 #define __NR_newfstatat __NR3264_fstatat
764 #define __NR_fstat __NR3264_fstat

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  parent reply	other threads:[~2018-11-12  6:19 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-11-12  4:07 [PATCH 0/2] Fix some issue " Zong Li
2018-11-12  4:07 ` Zong Li
2018-11-12  4:07 ` [PATCH 1/2] RISC-V: Request stat64 " Zong Li
2018-11-12  4:07   ` Zong Li
2018-11-12  6:19   ` David Abdurachmanov [this message]
2018-11-12  6:19     ` David Abdurachmanov
2018-11-12  8:29     ` Zong Li
2018-11-12  8:29       ` Zong Li
2018-11-12 17:01     ` Palmer Dabbelt
2018-11-12 17:01       ` Palmer Dabbelt
2018-11-12  4:07 ` [PATCH 2/2] RISC-V: Support MODULE_SECTIONS mechanism " Zong Li
2018-11-12  4:07   ` Zong Li

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