linux-kernel - Re: [PATCH] scripts: add generic install.sh

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Date:   Wed, 25 Aug 2021 22:20:14 +0200
From:   Nicolas Schier <nicolas@...sle.eu>
To:     Masahiro Yamada <masahiroy@...nel.org>
Cc:     linux-kbuild@...r.kernel.org,
        Michal Marek <michal.lkml@...kovi.net>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] scripts: add generic install.sh

On Wed, 25 Aug 2021 01:50:24 +0900 Masahiro Yamada wrote:
> Many architectures has a similar install.sh script.
> 
> The first half is really generic; ensures the kernel image and the map
> file exist, then invokes ~/bin/${INSTALLKERNEL} or /sbin/${INSTALLKERNEL}
> if available.
> 
> The second half is kind of arch-specific. It just copies the kernel image
> and map file to the destination, but the code is slightly different.
> (Maybe, this part can be consolidated as well if we want).
> 
> This patch factors out the generic part into scripts/install.sh, which
> will architectures to drop the duplicated code.
      ^
I am afraid, a word is missing here, e.g.:
... which will allow architectures to drop ...?

> 
> Signed-off-by: Masahiro Yamada <masahiroy@...nel.org>
> ---
> 
>  Makefile           |  8 ++++++++
>  scripts/install.sh | 43 +++++++++++++++++++++++++++++++++++++++++++
>  2 files changed, 51 insertions(+)
>  create mode 100755 scripts/install.sh
> 
> diff --git a/Makefile b/Makefile
> index 185ce47d6734..725eadc4fcb8 100644
> --- a/Makefile
> +++ b/Makefile
> @@ -1325,6 +1325,14 @@ scripts_unifdef: scripts_basic
>  
>  install: sub_make_done :=
>  
> +# Install $(KBUILD_IMAGE) by default.
> +# If necessary, override install-image per target.
> +install-image = $(KBUILD_IMAGE)
> +
> +quiet_cmd_install = INSTALL $(INSTALL_PATH)
> +      cmd_install = scripts/install.sh $(KERNELRELEASE) $(install-image) \
> +			System.map "$(INSTALL_PATH)"
> +
>  # ---------------------------------------------------------------------------
>  # Tools
>  
> diff --git a/scripts/install.sh b/scripts/install.sh
> new file mode 100755
> index 000000000000..6ac0e0c0f078
> --- /dev/null
> +++ b/scripts/install.sh
> @@ -0,0 +1,43 @@
> +#!/bin/sh
> +# SPDX-License-Identifier: GPL-2.0-only
> +#
> +# This file is subject to the terms and conditions of the GNU General Public
> +# License.  See the file "COPYING" in the main directory of this archive
> +# for more details.
> +#
> +# Copyright (C) 1995 by Linus Torvalds
> +#
> +# Adapted from code in arch/i386/boot/Makefile by H. Peter Anvin
> +#
> +# Arguments:
> +#   $1 - kernel version
> +#   $2 - kernel image file
> +#   $3 - kernel map file
> +#   $4 - default install path (blank if root directory)
> +
> +verify () {
> +	if [ ! -f "$1" ]; then
> +		echo >&2
> +		echo >&2 " *** Missing file: $1"
> +		echo >&2 ' *** You need to run "make" before "make install".'
> +		echo >&2
> +		exit 1
> +	fi
> +}
> +
> +# Make sure the files actually exist
> +verify "$2"
> +verify "$3"
> +
> +# User/arch may have a custom install script
> +
> +for script in "~/bin/${INSTALLKERNEL}" "/sbin/${INSTALLKERNEL}" \

Quoted ~ will not be expanded.  Either you need to put the leading ~/ 
before the quotes, or replace it by ${HOME}.

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

> +		"arch/${SRCARCH}/install.sh" "arch/${SRCARCH}/boot/install.sh"
> +do
> +	if [ -x "${script}" ]; then
> +		exec "${script}" "$@"
> +	fi
> +done
> +
> +echo "No install script found" >&2
> +exit 1
> -- 
> 2.30.2
>