linux-kernel - Re: [PATCH v2] kbuild: Install dtb files as 0644 in Makefile.dtbinst

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Date: Mon, 10 Jun 2024 17:18:54 +0200
From: Nicolas Schier <nicolas@...sle.eu>
To: Dragan Simic <dsimic@...jaro.org>
Cc: linux-kbuild@...r.kernel.org, masahiroy@...nel.org, nathan@...nel.org,
 linux-kernel@...r.kernel.org, gregkh@...uxfoundation.org,
 Diederik de Haas <didi.debian@...ow.org>, stable@...r.kernel.org
Subject: Re: [PATCH v2] kbuild: Install dtb files as 0644 in Makefile.dtbinst

On Mon, Jun 10, 2024 at 07:21:12AM +0200 Dragan Simic wrote:
> The compiled dtb files aren't executable, so install them with 0644 as their
> permission mode, instead of defaulting to 0755 for the permission mode and
> installing them with the executable bits set.
> 
> Some Linux distributions, including Debian, [1][2][3] already include fixes
> in their kernel package build recipes to change the dtb file permissions to
> 0644 in their kernel packages.  These changes, when additionally propagated
> into the long-term kernel versions, will allow such distributions to remove
> their downstream fixes.
> 
> [1] https://salsa.debian.org/kernel-team/linux/-/merge_requests/642
> [2] https://salsa.debian.org/kernel-team/linux/-/merge_requests/749
> [3] https://salsa.debian.org/kernel-team/linux/-/blob/master/debian/rules.real?ref_type=heads#L193
> 
> Cc: Diederik de Haas <didi.debian@...ow.org>
> Cc: stable@...r.kernel.org
> Fixes: aefd80307a05 ("kbuild: refactor Makefile.dtbinst more")
> Signed-off-by: Dragan Simic <dsimic@...jaro.org>
> ---
> 
> Notes:
>     Changes in v2:
>       - Improved the patch description, to include additional details and
>         to address the patch submission issues pointed out by Greg K-H [4]
>       - No changes were made to the patch itself
>     
>     Link to v1: https://lore.kernel.org/linux-kbuild/ae087ef1715142f606ba6477ace3e4111972cf8b.1717961381.git.dsimic@manjaro.org/T/#u
>     
>     [4] https://lore.kernel.org/linux-kbuild/2024061006-ladylike-paving-a36b@gregkh/
> 
>  scripts/Makefile.dtbinst | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/scripts/Makefile.dtbinst b/scripts/Makefile.dtbinst
> index 67956f6496a5..9d920419a62c 100644
> --- a/scripts/Makefile.dtbinst
> +++ b/scripts/Makefile.dtbinst
> @@ -17,7 +17,7 @@ include $(srctree)/scripts/Kbuild.include
>  dst := $(INSTALL_DTBS_PATH)
>  
>  quiet_cmd_dtb_install = INSTALL $@
> -      cmd_dtb_install = install -D $< $@
> +      cmd_dtb_install = install -D -m 0644 $< $@
>  
>  $(dst)/%: $(obj)/%
>  	$(call cmd,dtb_install)

Thanks for the patch.

Reviewed-by: Nicolas Schier <nicolas@...sle.eu>

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