linux-kernel - Re: [PATCH] kbuild: dummy-tools: avoid tmpdir leak in dummy gcc

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Message-ID: <CAK7LNAR8UV9jECd41tVfpRDMnZaPaErYm2-d1TmS+T_pZauQwg@mail.gmail.com>
Date:   Tue, 12 Jul 2022 12:20:07 +0900
From:   Masahiro Yamada <masahiroy@...nel.org>
To:     Ondrej Mosnacek <omosnace@...hat.com>
Cc:     Michal Marek <michal.lkml@...kovi.net>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        Linux Kbuild mailing list <linux-kbuild@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] kbuild: dummy-tools: avoid tmpdir leak in dummy gcc

On Mon, Jul 11, 2022 at 9:09 PM Ondrej Mosnacek <omosnace@...hat.com> wrote:
>
> When passed -print-file-name=plugin, the dummy gcc script creates a
> temporary directory that is never cleaned up. To avoid cluttering
> $TMPDIR, instead use a static directory included in the source tree.
>
> Fixes: 76426e238834 ("kbuild: add dummy toolchains to enable all cc-option etc. in Kconfig")
> Signed-off-by: Ondrej Mosnacek <omosnace@...hat.com>
> ---

Applied to linux-kbuild. Thanks.



>  .../dummy-tools/dummy-plugin-dir/include/plugin-version.h | 0
>  scripts/dummy-tools/gcc                                   | 8 ++------
>  2 files changed, 2 insertions(+), 6 deletions(-)
>  create mode 100644 scripts/dummy-tools/dummy-plugin-dir/include/plugin-version.h
>
> diff --git a/scripts/dummy-tools/dummy-plugin-dir/include/plugin-version.h b/scripts/dummy-tools/dummy-plugin-dir/include/plugin-version.h
> new file mode 100644
> index 000000000000..e69de29bb2d1
> diff --git a/scripts/dummy-tools/gcc b/scripts/dummy-tools/gcc
> index b2483149bbe5..7db825843435 100755
> --- a/scripts/dummy-tools/gcc
> +++ b/scripts/dummy-tools/gcc
> @@ -96,12 +96,8 @@ fi
>
>  # To set GCC_PLUGINS
>  if arg_contain -print-file-name=plugin "$@"; then
> -       plugin_dir=$(mktemp -d)
> -
> -       mkdir -p $plugin_dir/include
> -       touch $plugin_dir/include/plugin-version.h
> -
> -       echo $plugin_dir
> +       # Use $0 to find the in-tree dummy directory
> +       echo "$(dirname "$(readlink -f "$0")")/dummy-plugin-dir"
>         exit 0
>  fi
>
> --
> 2.36.1
>


-- 
Best Regards
Masahiro Yamada