linux-kernel - Re: [PATCH 07/13] kbuild: do not remove 'linux' link in scripts/link-vmlinux.sh

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Date:   Wed, 18 Aug 2021 23:32:14 -0700
From:   Kees Cook <keescook@...omium.org>
To:     Masahiro Yamada <masahiroy@...nel.org>
Cc:     linux-kbuild@...r.kernel.org,
        Sami Tolvanen <samitolvanen@...gle.com>,
        linux-kernel@...r.kernel.org,
        Michal Marek <michal.lkml@...kovi.net>,
        Nick Desaulniers <ndesaulniers@...gle.com>
Subject: Re: [PATCH 07/13] kbuild: do not remove 'linux' link in
 scripts/link-vmlinux.sh

On Thu, Aug 19, 2021 at 09:57:38AM +0900, Masahiro Yamada wrote:
> arch/um/Makefile passes the -f option to the ln command:
> 
>     $(Q)ln -f $< $@
> 
> So, the hard link is always re-created, and the old one is removed
> anyway.

Hah, yeah, that's a bit of ARCH=um redundancy.

Reviewed-by: Kees Cook <keescook@...omium.org>

> 
> Signed-off-by: Masahiro Yamada <masahiroy@...nel.org>
> ---
> 
>  scripts/link-vmlinux.sh | 1 -
>  1 file changed, 1 deletion(-)
> 
> diff --git a/scripts/link-vmlinux.sh b/scripts/link-vmlinux.sh
> index a6c4d0bce3ba..7b9c62e4d54a 100755
> --- a/scripts/link-vmlinux.sh
> +++ b/scripts/link-vmlinux.sh
> @@ -206,7 +206,6 @@ vmlinux_link()
>  			-Wl,-T,${lds}				\
>  			${objects}				\
>  			-lutil -lrt -lpthread
> -		rm -f linux
>  	fi
>  }
>  
> -- 
> 2.30.2
> 

-- 
Kees Cook