systemd/0095-kernel-install-add-a-new-ENTRY_TOKEN-variable-for-na.patch
Jan Macku 0daf48d9aa systemd-250-8
Resolves: #2047682,#2068043,#2068131,#2073003,#2073994,#2082131,#2083493,#2087652,#2100340
2022-07-20 08:37:23 +02:00

137 lines
5.8 KiB
Diff

From 455b9b9dd4d462db7482f67d8e730b25e75b1505 Mon Sep 17 00:00:00 2001
From: Lennart Poettering <lennart@poettering.net>
Date: Wed, 9 Feb 2022 14:29:19 +0100
Subject: [PATCH] kernel-install: add a new $ENTRY_TOKEN variable for naming
boot entries
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
This cleans up naming of boot loader spec boot entries a bit (i.e. the
naming of the .conf snippet files, and the directory in $BOOT where the
kernel images and initrds are placed), and isolates it from the actual machine
ID concept.
Previously there was a sinlge concept for both things, because typically
the entries are just named after the machine ID. However one could also
use a different identifier, i.e. not a 128bit ID in which cases issues
pop up everywhere. For example, the "machine-id" field in the generated
snippets would not be a machine ID anymore, and the newly added
systemd.machine_id= kernel parameter would possibly get passed invalid
data.
Hence clean this up:
$MACHINE_ID → always a valid 128bit ID.
$ENTRY_TOKEN → usually the $MACHINE_ID but can be any other string too.
This is used to name the directory to put kernels/initrds in. It's also
used for naming the *.conf snippets that implement the Boot Loader Type
1 spec.
(cherry picked from commit 3907044ffa568aedf076d0f9807489ec78f87502)
Related: #2065061
---
src/kernel-install/90-loaderentry.install | 11 ++++++-----
src/kernel-install/kernel-install | 21 +++++++++++++++++----
2 files changed, 23 insertions(+), 9 deletions(-)
diff --git a/src/kernel-install/90-loaderentry.install b/src/kernel-install/90-loaderentry.install
index 046771169c..46261a2c11 100644
--- a/src/kernel-install/90-loaderentry.install
+++ b/src/kernel-install/90-loaderentry.install
@@ -29,6 +29,7 @@ INITRD_OPTIONS_SHIFT=4
[ "$KERNEL_INSTALL_LAYOUT" = "bls" ] || exit 0
MACHINE_ID="$KERNEL_INSTALL_MACHINE_ID"
+ENTRY_TOKEN="$KERNEL_INSTALL_ENTRY_TOKEN"
BOOT_ROOT="$KERNEL_INSTALL_BOOT_ROOT"
BOOT_MNT="$(stat -c %m "$BOOT_ROOT")"
@@ -41,10 +42,10 @@ fi
case "$COMMAND" in
remove)
[ "$KERNEL_INSTALL_VERBOSE" -gt 0 ] && \
- echo "Removing $BOOT_ROOT/loader/entries/$MACHINE_ID-$KERNEL_VERSION*.conf"
+ echo "Removing $BOOT_ROOT/loader/entries/$ENTRY_TOKEN-$KERNEL_VERSION*.conf"
exec rm -f \
- "$BOOT_ROOT/loader/entries/$MACHINE_ID-$KERNEL_VERSION.conf" \
- "$BOOT_ROOT/loader/entries/$MACHINE_ID-$KERNEL_VERSION+"*".conf"
+ "$BOOT_ROOT/loader/entries/$ENTRY_TOKEN-$KERNEL_VERSION.conf" \
+ "$BOOT_ROOT/loader/entries/$ENTRY_TOKEN-$KERNEL_VERSION+"*".conf"
;;
add)
;;
@@ -80,9 +81,9 @@ if [ -r /etc/kernel/tries ]; then
echo "/etc/kernel/tries does not contain an integer." >&2
exit 1
fi
- LOADER_ENTRY="$BOOT_ROOT/loader/entries/$MACHINE_ID-$KERNEL_VERSION+$TRIES.conf"
+ LOADER_ENTRY="$BOOT_ROOT/loader/entries/$ENTRY_TOKEN-$KERNEL_VERSION+$TRIES.conf"
else
- LOADER_ENTRY="$BOOT_ROOT/loader/entries/$MACHINE_ID-$KERNEL_VERSION.conf"
+ LOADER_ENTRY="$BOOT_ROOT/loader/entries/$ENTRY_TOKEN-$KERNEL_VERSION.conf"
fi
if ! [ -d "$ENTRY_DIR_ABS" ]; then
diff --git a/src/kernel-install/kernel-install b/src/kernel-install/kernel-install
index e94aa79bc6..75a31c62d4 100755
--- a/src/kernel-install/kernel-install
+++ b/src/kernel-install/kernel-install
@@ -97,7 +97,19 @@ fi
[ -z "$MACHINE_ID" ] && [ -r /etc/machine-id ] && read -r MACHINE_ID </etc/machine-id
[ -z "$MACHINE_ID" ] && MACHINE_ID="$(systemd-id128 new)"
-[ -z "$BOOT_ROOT" ] && for suff in "$MACHINE_ID" "loader/entries"; do
+# Now that we determined the machine ID to use, let's determine the "token" for
+# the boot loader entry to generate. We use that for naming the directory below
+# $BOOT where we want to place the kernel/initrd and related resources, as well
+# for naming the .conf boot loader spec entry. Typically this is just the
+# machine ID, but it can be anything else, too, if we are told so.
+[ -z "$ENTRY_TOKEN" ] && [ -r /etc/kernel/entry-token ] && read -r ENTRY_TOKEN </etc/kernel/entry-token
+[ -z "$ENTRY_TOKEN" ] && ENTRY_TOKEN="$MACHINE_ID"
+
+# NB: The $MACHINE_ID is guaranteed to be a valid machine ID, but
+# $ENTRY_TOKEN can be any string that fits into a VFAT filename, though
+# typically is just the machine ID.
+
+[ -z "$BOOT_ROOT" ] && for suff in "$ENTRY_TOKEN" "loader/entries"; do
for pref in "/efi" "/boot" "/boot/efi" ; do
if [ -d "$pref/$suff" ]; then
BOOT_ROOT="$pref"
@@ -117,14 +129,14 @@ done
if [ -z "$layout" ]; then
# Administrative decision: if not present, some scripts generate into /boot.
- if [ -d "$BOOT_ROOT/$MACHINE_ID" ]; then
+ if [ -d "$BOOT_ROOT/$ENTRY_TOKEN" ]; then
layout="bls"
else
layout="other"
fi
fi
-ENTRY_DIR_ABS="$BOOT_ROOT/$MACHINE_ID/$KERNEL_VERSION"
+ENTRY_DIR_ABS="$BOOT_ROOT/$ENTRY_TOKEN/$KERNEL_VERSION"
# Provide a directory where to store generated initrds
cleanup() {
@@ -136,6 +148,7 @@ trap cleanup EXIT
KERNEL_INSTALL_STAGING_AREA="$(mktemp -d -t -p /tmp 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="$initrd_generator"
@@ -168,7 +181,7 @@ case "$COMMAND" in
fi
if [ "$MAKE_ENTRY_DIR_ABS" -eq 0 ]; then
- # Compatibility with earlier versions that used the presence of $BOOT_ROOT/$MACHINE_ID
+ # 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