linux-kernel - Re: [PATCH] setlocalversion: add -e option

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Message-ID: <CAK7LNARPv45324nwrFV9n22WiDVEasnPhDCjFdSMvA3kPBTB+Q@mail.gmail.com>
Date: Tue, 26 Nov 2024 22:11:50 +0900
From: Masahiro Yamada <masahiroy@...nel.org>
To: linux-kbuild@...r.kernel.org
Cc: Rasmus Villemoes <linux@...musvillemoes.dk>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] setlocalversion: add -e option

On Tue, Nov 19, 2024 at 8:15 AM Masahiro Yamada <masahiroy@...nel.org> wrote:
>
> Set the -e option to ensure this script fails on any unexpected errors.
>
> Without this change, the kernel build may continue running with an
> incorrect string in include/config/kernel.release.
>
> Currently, try_tag() returns 1 when the expected tag is not found as an
> ancestor, but this is a case where the script should continue.
>
> Signed-off-by: Masahiro Yamada <masahiroy@...nel.org>
> ---

Applied to linux-kbuild.



> After '[PATCH v3] setlocalversion: work around "git describe" performance',
> I need to remove "|| return 1" statements anyway, as it is not suitable
> for the -e option.
>
>   if []; then
>       ...
>   fi
>
> is more consistent with the existing code.
>
>
>
>  scripts/setlocalversion | 12 ++++++++----
>  1 file changed, 8 insertions(+), 4 deletions(-)
>
> diff --git a/scripts/setlocalversion b/scripts/setlocalversion
> index 5818465abba9..28169d7e143b 100755
> --- a/scripts/setlocalversion
> +++ b/scripts/setlocalversion
> @@ -10,6 +10,8 @@
>  #
>  #
>
> +set -e
> +
>  usage() {
>         echo "Usage: $0 [--no-local] [srctree]" >&2
>         exit 1
> @@ -34,7 +36,9 @@ try_tag() {
>         tag="$1"
>
>         # Is $tag an annotated tag?
> -       [ "$(git cat-file -t "$tag" 2> /dev/null)" = tag ] || return 1
> +       if [ "$(git cat-file -t "$tag" 2> /dev/null)" != tag ]; then
> +                return
> +       fi
>
>         # Is it an ancestor of HEAD, and if so, how many commits are in $tag..HEAD?
>         # shellcheck disable=SC2046 # word splitting is the point here
> @@ -43,12 +47,12 @@ try_tag() {
>         # $1 is 0 if and only if $tag is an ancestor of HEAD. Use
>         # string comparison, because $1 is empty if the 'git rev-list'
>         # command somehow failed.
> -       [ "$1" = 0 ] || return 1
> +       if [ "$1" != 0 ]; then
> +               return
> +       fi
>
>         # $2 is the number of commits in the range $tag..HEAD, possibly 0.
>         count="$2"
> -
> -       return 0
>  }
>
>  scm_version()
> --
> 2.43.0
>


-- 
Best Regards
Masahiro Yamada