mirror of
https://github.com/systemd/systemd.git
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kernel-install: rewrite in C
This is mostly a one-to-one translation of kernel-install.sh, except for
the followings:
- BOOT_ROOT is searched with find_{esp,xbootldr}_and_warn().
- entry token is searched with boot_entry_token_ensure().
- inspect command verboses more information, e.g. found plugins,
environment variables explicitly passed to plugins, arguments passed
to plugins.
- paths specified in $KERNEL_INSTALL_PLUGINS must be absolute.
- LC_COLLATE is set to C.UTF-8 (or any specified on build time).
By writing kernel-install C, we can share the code used by bootctl or
so, and can introduce --root and/or --image options later.
This commit is contained in:
Yu Watanabe
parent
150231d25d
commit
42551ea7e9
27
meson.build
27
meson.build
@ -4376,17 +4376,17 @@ executable(
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install : true,
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install : true,
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install_dir : rootlibexecdir)
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install_dir : rootlibexecdir)
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kernel_install = custom_target(
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kernel_install = executable(
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'kernel-install',
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'kernel-install',
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input : kernel_install_in,
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'src/kernel-install/kernel-install.c',
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output : 'kernel-install',
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include_directories : includes,
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command : [jinja2_cmdline, '@INPUT@', '@OUTPUT@'],
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link_with : [libshared],
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dependencies : [userspace,
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versiondep],
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install_rpath : rootpkglibdir,
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install : want_kernel_install,
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install : want_kernel_install,
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install_mode : 'rwxr-xr-x',
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install_dir : bindir)
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install_dir : bindir)
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if want_kernel_install
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public_programs += kernel_install
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public_programs += exe
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endif
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ukify = custom_target(
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ukify = custom_target(
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'ukify',
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'ukify',
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@ -4397,19 +4397,22 @@ ukify = custom_target(
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install_mode : 'rwxr-xr-x',
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install_mode : 'rwxr-xr-x',
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install_dir : rootlibexecdir)
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install_dir : rootlibexecdir)
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if want_ukify
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if want_ukify
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public_programs += ukify
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public_programs += ukify
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endif
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endif
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if want_tests != 'false' and want_kernel_install
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if want_tests != 'false' and want_kernel_install
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args = [kernel_install.full_path(), loaderentry_install, uki_copy_install]
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args = [kernel_install.full_path(), loaderentry_install.full_path(), uki_copy_install]
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deps = [kernel_install, loaderentry_install]
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if want_ukify and boot_stubs.length() > 0
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if want_ukify and boot_stubs.length() > 0
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args += [ukify.full_path(), ukify_install, boot_stubs[0]]
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args += [ukify.full_path(), ukify_install.full_path(), boot_stubs[0]]
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deps += [ukify, ukify_install, boot_stubs[0]]
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endif
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endif
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test('test-kernel-install',
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test('test-kernel-install',
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test_kernel_install_sh,
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test_kernel_install_sh,
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env : test_env,
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env : test_env,
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args : args)
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args : args,
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depends: deps)
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endif
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endif
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############################################################
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############################################################
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1183
src/kernel-install/kernel-install.c
Normal file
1183
src/kernel-install/kernel-install.c
Normal file
File diff suppressed because it is too large
Load Diff
@ -1,403 +0,0 @@
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#!/bin/sh
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# -*- mode: shell-script; indent-tabs-mode: nil; sh-basic-offset: 4; -*-
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# ex: ts=8 sw=4 sts=4 et filetype=sh
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# SPDX-License-Identifier: LGPL-2.1-or-later
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#
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# This file is part of systemd.
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#
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# systemd is free software; you can redistribute it and/or modify it
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# under the terms of the GNU Lesser General Public License as published by
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# the Free Software Foundation; either version 2.1 of the License, or
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# (at your option) any later version.
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#
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# systemd is distributed in the hope that it will be useful, but
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# WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# General Public License for more details.
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#
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# You should have received a copy of the GNU Lesser General Public License
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# along with systemd; If not, see <https://www.gnu.org/licenses/>.
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skip_remaining=77
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set -e
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usage()
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{
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echo "Usage:"
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echo " kernel-install [OPTIONS...] add KERNEL-VERSION KERNEL-IMAGE [INITRD-FILE...]"
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echo " kernel-install [OPTIONS...] remove KERNEL-VERSION"
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echo " kernel-install [OPTIONS...] inspect"
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echo "Options:"
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echo " -h, --help Print this help and exit"
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echo " --version Print version string and exit"
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echo " -v, --verbose Increase verbosity"
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}
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dropindirs_sort()
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{
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suffix="$1"
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shift
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for d; do
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for i in "$d/"*"$suffix"; do
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[ -e "$i" ] && echo "${i##*/}"
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done
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done | sort -Vu | while read -r f; do
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for d; do
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if [ -e "$d/$f" ]; then
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[ -x "$d/$f" ] && echo "$d/$f"
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continue 2
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fi
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done
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done
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}
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export LC_COLLATE=C
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for i; do
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if [ "$i" = "--help" ] || [ "$i" = "-h" ]; then
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usage
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exit 0
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fi
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done
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for i; do
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if [ "$i" = "--version" ]; then
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echo "kernel-install {{PROJECT_VERSION}} ({{GIT_VERSION}})"
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exit 0
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fi
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done
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if [ "$KERNEL_INSTALL_BYPASS" = "1" ]; then
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echo "kernel-install: Skipping execution because KERNEL_INSTALL_BYPASS=1"
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exit 0
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fi
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export KERNEL_INSTALL_VERBOSE=0
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if [ "$1" = "--verbose" ] || [ "$1" = "-v" ]; then
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shift
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export KERNEL_INSTALL_VERBOSE=1
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log_verbose() { printf "%s\n" "$*"; }
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else
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log_verbose() { :; }
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fi
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if [ "${0##*/}" = "installkernel" ]; then
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COMMAND=add
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# kernel's install.sh invokes us as
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# /sbin/installkernel <version> <vmlinuz> <map> <installation-dir>
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# We ignore the last two arguments.
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set -- "${1:?}" "${2:?}"
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else
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COMMAND="$1"
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[ $# -ge 1 ] && shift
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fi
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if [ "$COMMAND" = "inspect" ]; then
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KERNEL_VERSION=""
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else
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if [ $# -lt 1 ]; then
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echo "Error: not enough arguments" >&2
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exit 1
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fi
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KERNEL_VERSION="$1"
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shift
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fi
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# These three settings are only settable via install.conf
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layout=
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initrd_generator=
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uki_generator=
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# These two settings can be inherited from the environment
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_MACHINE_ID_SAVED="$MACHINE_ID"
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_BOOT_ROOT_SAVED="$BOOT_ROOT"
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if [ -n "$KERNEL_INSTALL_CONF_ROOT" ]; then
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install_conf="$KERNEL_INSTALL_CONF_ROOT/install.conf"
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elif [ -f "/etc/kernel/install.conf" ]; then
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install_conf="/etc/kernel/install.conf"
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elif [ -f "/usr/lib/kernel/install.conf" ]; then
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install_conf="/usr/lib/kernel/install.conf"
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else
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install_conf=
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fi
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if [ -f "$install_conf" ]; then
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log_verbose "Reading $install_conf…"
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# shellcheck source=/dev/null
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. "$install_conf"
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fi
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[ -n "$layout" ] && log_verbose "$install_conf configures layout=$layout"
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[ -n "$initrd_generator" ] && \
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log_verbose "$install_conf configures initrd_generator=$initrd_generator"
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[ -n "$uki_generator" ] && \
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log_verbose "$install_conf configures uki_generator=$uki_generator"
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if [ -n "$_MACHINE_ID_SAVED" ]; then
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MACHINE_ID="$_MACHINE_ID_SAVED"
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log_verbose "MACHINE_ID=$MACHINE_ID set via environment"
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else
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[ -n "$MACHINE_ID" ] && log_verbose "MACHINE_ID=$MACHINE_ID set via install.conf"
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fi
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if [ -n "$_BOOT_ROOT_SAVED" ]; then
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BOOT_ROOT="$_BOOT_ROOT_SAVED"
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log_verbose "BOOT_ROOT=$BOOT_ROOT set via environment"
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else
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[ -n "$BOOT_ROOT" ] && log_verbose "BOOT_ROOT=$BOOT_ROOT set via install.conf"
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fi
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# If /etc/machine-id is initialized we'll use it, otherwise we'll use a freshly
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# generated one. If the user configured an explicit machine ID to use in
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# /etc/machine-info to use for our purpose, we'll use that instead (for
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# compatibility).
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# shellcheck source=/dev/null
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if [ -z "$MACHINE_ID" ] && [ -f /etc/machine-info ]; then
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. /etc/machine-info
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MACHINE_ID="$KERNEL_INSTALL_MACHINE_ID"
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[ -n "$MACHINE_ID" ] && \
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log_verbose "machine-id $MACHINE_ID acquired from /etc/machine-info"
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fi
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if [ -z "$MACHINE_ID" ] && [ -s /etc/machine-id ]; then
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read -r MACHINE_ID </etc/machine-id
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[ "$MACHINE_ID" = "uninitialized" ] && unset MACHINE_ID
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[ -n "$MACHINE_ID" ] && \
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log_verbose "machine-id $MACHINE_ID acquired from /etc/machine-id"
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fi
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if [ -z "$MACHINE_ID" ]; then
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MACHINE_ID="$(systemd-id128 new)" || exit 1
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log_verbose "new machine-id $MACHINE_ID generated"
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fi
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# Now that we determined the machine ID to use, let's determine the "token" for
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# the boot loader entry to generate. We use that for naming the directory below
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# $BOOT where we want to place the kernel/initrd and related resources, as well
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# for naming the .conf boot loader spec entry. Typically this is just the
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# machine ID, but it can be anything else, too, if we are told so.
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ENTRY_TOKEN_FILE="${KERNEL_INSTALL_CONF_ROOT:-/etc/kernel}/entry-token"
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if [ -z "$ENTRY_TOKEN" ] && [ -f "$ENTRY_TOKEN_FILE" ]; then
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read -r ENTRY_TOKEN <"$ENTRY_TOKEN_FILE"
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log_verbose "entry-token \"$ENTRY_TOKEN\" acquired from $ENTRY_TOKEN_FILE"
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fi
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if [ -z "$ENTRY_TOKEN" ]; then
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# If not configured explicitly, then use a few candidates: the machine ID,
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# the IMAGE_ID= and ID= fields from /etc/os-release and finally the fixed
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# string "Default"
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ENTRY_TOKEN_SEARCH="$MACHINE_ID"
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# shellcheck source=/dev/null
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[ -f /etc/os-release ] && . /etc/os-release
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[ -n "$IMAGE_ID" ] && ENTRY_TOKEN_SEARCH="$ENTRY_TOKEN_SEARCH $IMAGE_ID"
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[ -n "$ID" ] && ENTRY_TOKEN_SEARCH="$ENTRY_TOKEN_SEARCH $ID"
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ENTRY_TOKEN_SEARCH="$ENTRY_TOKEN_SEARCH Default"
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else
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ENTRY_TOKEN_SEARCH="$ENTRY_TOKEN"
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fi
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log_verbose "Entry-token candidates: $ENTRY_TOKEN_SEARCH"
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# NB: The $MACHINE_ID is guaranteed to be a valid machine ID, but
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# $ENTRY_TOKEN can be any string that fits into a VFAT filename, though
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# typically is just the machine ID.
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if [ -n "$BOOT_ROOT" ]; then
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# If this was already configured, don't try to guess
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BOOT_ROOT_SEARCH="$BOOT_ROOT"
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else
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BOOT_ROOT_SEARCH="/efi /boot /boot/efi"
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fi
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for pref in $BOOT_ROOT_SEARCH; do
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for suff in $ENTRY_TOKEN_SEARCH; do
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if [ -d "$pref/$suff" ]; then
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[ -z "$BOOT_ROOT" ] && BOOT_ROOT="$pref"
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[ -z "$ENTRY_TOKEN" ] && ENTRY_TOKEN="$suff"
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log_verbose "$pref/$suff exists, using BOOT_ROOT=$BOOT_ROOT, ENTRY_TOKEN=$ENTRY_TOKEN"
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break 2
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else
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log_verbose "$pref/$suff not found…"
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fi
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done
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if [ -d "$pref/loader/entries" ]; then
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[ -z "$BOOT_ROOT" ] && BOOT_ROOT="$pref"
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log_verbose "$pref/loader/entries exists, using BOOT_ROOT=$BOOT_ROOT"
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break
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else
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log_verbose "$pref/loader/entries not found…"
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fi
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done
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[ -z "$BOOT_ROOT" ] && for pref in "/efi" "/boot/efi"; do
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if mountpoint -q "$pref"; then
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BOOT_ROOT="$pref"
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log_verbose "$pref is a mount point, using BOOT_ROOT=$BOOT_ROOT"
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break
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else
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log_verbose "$pref is not a mount point…"
|
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fi
|
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||||||
done
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if [ -z "$BOOT_ROOT" ]; then
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BOOT_ROOT="/boot"
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log_verbose "KERNEL_INSTALL_BOOT_ROOT autodetection yielded no candidates, using \"$BOOT_ROOT\""
|
|
||||||
fi
|
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if [ -z "$ENTRY_TOKEN" ]; then
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ENTRY_TOKEN="$MACHINE_ID"
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log_verbose "No entry-token candidate matched, using \"$ENTRY_TOKEN\" from machine-id"
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|
||||||
fi
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|
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export KERNEL_INSTALL_IMAGE_TYPE=""
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if [ -f "$1" ]; then
|
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KERNEL_INSTALL_IMAGE_TYPE="$(bootctl kernel-identify "$1" 2>/dev/null || echo "unknown")"
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||||||
fi
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if [ "$layout" = "auto" ] || [ -z "$layout" ]; then
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||||||
# No layout configured by the administrator. Let's try to figure it out
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||||||
# automatically from metadata already contained in $BOOT_ROOT.
|
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||||||
if [ "$KERNEL_INSTALL_IMAGE_TYPE" = "uki" ]; then
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layout="uki"
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log_verbose "Kernel image is UKI, using layout=$layout"
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elif [ -e "$BOOT_ROOT/loader/entries.srel" ]; then
|
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read -r ENTRIES_SREL <"$BOOT_ROOT/loader/entries.srel"
|
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if [ "$ENTRIES_SREL" = "type1" ]; then
|
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||||||
# The loader/entries.srel file clearly indicates that the installed
|
|
||||||
# boot loader implements the proper standard upstream boot loader
|
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||||||
# spec for Type #1 entries. Let's default to that, then.
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layout="bls"
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else
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# The loader/entries.srel file indicates some other spec is
|
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||||||
# implemented and owns the /loader/entries/ directory. Since we
|
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||||||
# have no idea what that means, let's stay away from it by default.
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layout="other"
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||||||
fi
|
|
||||||
log_verbose "$BOOT_ROOT/loader/entries.srel with '$ENTRIES_SREL' found, using layout=$layout"
|
|
||||||
|
|
||||||
elif [ -d "$BOOT_ROOT/$ENTRY_TOKEN" ]; then
|
|
||||||
# If the metadata in $BOOT_ROOT doesn't tell us anything, then check if
|
|
||||||
# the entry token directory already exists. If so, let's assume it's
|
|
||||||
# the standard boot loader spec, too.
|
|
||||||
layout="bls"
|
|
||||||
|
|
||||||
log_verbose "$BOOT_ROOT/$ENTRY_TOKEN exists, using layout=$layout"
|
|
||||||
else
|
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||||||
# There's no metadata in $BOOT_ROOT, and apparently no entry token
|
|
||||||
# directory installed? Then we really don't know anything.
|
|
||||||
layout="other"
|
|
||||||
|
|
||||||
log_verbose "Entry-token directory not found, using layout=$layout"
|
|
||||||
fi
|
|
||||||
fi
|
|
||||||
|
|
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ENTRY_DIR_ABS="$BOOT_ROOT/$ENTRY_TOKEN/$KERNEL_VERSION"
|
|
||||||
log_verbose "Using ENTRY_DIR_ABS=$ENTRY_DIR_ABS"
|
|
||||||
|
|
||||||
# Provide a directory where to store generated initrds
|
|
||||||
cleanup() {
|
|
||||||
[ -n "$KERNEL_INSTALL_STAGING_AREA" ] && rm -rf "$KERNEL_INSTALL_STAGING_AREA"
|
|
||||||
}
|
|
||||||
|
|
||||||
trap cleanup EXIT
|
|
||||||
|
|
||||||
KERNEL_INSTALL_STAGING_AREA="$(mktemp -d -t kernel-install.staging.XXXXXXX)"
|
|
||||||
|
|
||||||
export KERNEL_INSTALL_MACHINE_ID="$MACHINE_ID"
|
|
||||||
export KERNEL_INSTALL_ENTRY_TOKEN="$ENTRY_TOKEN"
|
|
||||||
export KERNEL_INSTALL_BOOT_ROOT="$BOOT_ROOT"
|
|
||||||
export KERNEL_INSTALL_LAYOUT="$layout"
|
|
||||||
export KERNEL_INSTALL_INITRD_GENERATOR="$initrd_generator"
|
|
||||||
export KERNEL_INSTALL_UKI_GENERATOR="$uki_generator"
|
|
||||||
export KERNEL_INSTALL_STAGING_AREA
|
|
||||||
|
|
||||||
MAKE_ENTRY_DIR_ABS=0
|
|
||||||
[ "$layout" = "bls" ] || MAKE_ENTRY_DIR_ABS=1
|
|
||||||
|
|
||||||
ret=0
|
|
||||||
|
|
||||||
if [ -z "$KERNEL_INSTALL_PLUGINS" ]; then
|
|
||||||
KERNEL_INSTALL_PLUGINS="$(
|
|
||||||
dropindirs_sort ".install" \
|
|
||||||
"/etc/kernel/install.d" \
|
|
||||||
"/usr/lib/kernel/install.d"
|
|
||||||
)"
|
|
||||||
fi
|
|
||||||
|
|
||||||
if [ "$KERNEL_INSTALL_VERBOSE" -gt 0 ]; then
|
|
||||||
printf '%s\n' "Plugin files:"
|
|
||||||
for f in $KERNEL_INSTALL_PLUGINS; do
|
|
||||||
printf '%s\n' "$f"
|
|
||||||
done
|
|
||||||
fi
|
|
||||||
|
|
||||||
case "$COMMAND" in
|
|
||||||
add)
|
|
||||||
if [ $# -lt 1 ]; then
|
|
||||||
echo "Error: command 'add' requires a kernel image" >&2
|
|
||||||
exit 1
|
|
||||||
fi
|
|
||||||
|
|
||||||
if ! [ -f "$1" ]; then
|
|
||||||
echo "Error: kernel image argument $1 not a file" >&2
|
|
||||||
exit 1
|
|
||||||
fi
|
|
||||||
|
|
||||||
if [ "$MAKE_ENTRY_DIR_ABS" -eq 0 ]; then
|
|
||||||
# Compatibility with earlier versions that used the presence of $BOOT_ROOT/$ENTRY_TOKEN
|
|
||||||
# to signal to 00-entry-directory to create $ENTRY_DIR_ABS
|
|
||||||
# to serve as the indication to use or to not use the BLS
|
|
||||||
if [ "$KERNEL_INSTALL_VERBOSE" -gt 0 ]; then
|
|
||||||
echo "+mkdir -v -p $ENTRY_DIR_ABS"
|
|
||||||
mkdir -v -p "$ENTRY_DIR_ABS" || exit 1
|
|
||||||
else
|
|
||||||
mkdir -p "$ENTRY_DIR_ABS" || exit 1
|
|
||||||
fi
|
|
||||||
fi
|
|
||||||
|
|
||||||
for f in $KERNEL_INSTALL_PLUGINS; do
|
|
||||||
log_verbose "+$f add $KERNEL_VERSION $ENTRY_DIR_ABS" "$@"
|
|
||||||
err=0
|
|
||||||
"$f" add "$KERNEL_VERSION" "$ENTRY_DIR_ABS" "$@" || err=$?
|
|
||||||
[ $err -eq $skip_remaining ] && break
|
|
||||||
[ $err -ne 0 ] && exit $err
|
|
||||||
done
|
|
||||||
;;
|
|
||||||
|
|
||||||
remove)
|
|
||||||
for f in $KERNEL_INSTALL_PLUGINS; do
|
|
||||||
log_verbose "+$f remove $KERNEL_VERSION $ENTRY_DIR_ABS"
|
|
||||||
err=0
|
|
||||||
"$f" remove "$KERNEL_VERSION" "$ENTRY_DIR_ABS" || err=$?
|
|
||||||
[ $err -eq $skip_remaining ] && break
|
|
||||||
[ $err -ne 0 ] && exit $err
|
|
||||||
done
|
|
||||||
|
|
||||||
if [ "$MAKE_ENTRY_DIR_ABS" -eq 0 ]; then
|
|
||||||
log_verbose "Removing $ENTRY_DIR_ABS/"
|
|
||||||
rm -rf "$ENTRY_DIR_ABS"
|
|
||||||
fi
|
|
||||||
;;
|
|
||||||
|
|
||||||
inspect)
|
|
||||||
echo "KERNEL_INSTALL_MACHINE_ID: $KERNEL_INSTALL_MACHINE_ID"
|
|
||||||
echo "KERNEL_INSTALL_ENTRY_TOKEN: $KERNEL_INSTALL_ENTRY_TOKEN"
|
|
||||||
echo "KERNEL_INSTALL_BOOT_ROOT: $KERNEL_INSTALL_BOOT_ROOT"
|
|
||||||
echo "KERNEL_INSTALL_LAYOUT: $KERNEL_INSTALL_LAYOUT"
|
|
||||||
echo "KERNEL_INSTALL_INITRD_GENERATOR: $KERNEL_INSTALL_INITRD_GENERATOR"
|
|
||||||
echo "KERNEL_INSTALL_UKI_GENERATOR: $KERNEL_INSTALL_UKI_GENERATOR"
|
|
||||||
echo "ENTRY_DIR_ABS: $KERNEL_INSTALL_BOOT_ROOT/$ENTRY_TOKEN/\$KERNEL_VERSION"
|
|
||||||
|
|
||||||
# Assert that ENTRY_DIR_ABS actually matches what we are printing here
|
|
||||||
[ "${ENTRY_DIR_ABS%/*}" = "$KERNEL_INSTALL_BOOT_ROOT/$ENTRY_TOKEN" ] || { echo "Assertion didn't pass." >&2; exit 1; }
|
|
||||||
;;
|
|
||||||
|
|
||||||
*)
|
|
||||||
echo "Error: unknown command '$COMMAND'" >&2
|
|
||||||
exit 1
|
|
||||||
;;
|
|
||||||
esac
|
|
||||||
|
|
||||||
exit "$ret"
|
|
||||||
@ -1,7 +1,5 @@
|
|||||||
# SPDX-License-Identifier: LGPL-2.1-or-later
|
# SPDX-License-Identifier: LGPL-2.1-or-later
|
||||||
|
|
||||||
kernel_install_in = files('kernel-install.in')
|
|
||||||
|
|
||||||
ukify_install = custom_target(
|
ukify_install = custom_target(
|
||||||
'60-ukify.install',
|
'60-ukify.install',
|
||||||
input : '60-ukify.install.in',
|
input : '60-ukify.install.in',
|
||||||
|
|||||||
Loading…
Reference in New Issue
Block a user