kernel-install: handle uki installs automatically

Detect image type using "bootctl kernel-identify $kernel",
store result in KERNEL_INSTALL_IMAGE_TYPE.

Extend layout autodetection to check the kernel image type
and pick layout=uki for UKIs.

Resolves: #25822
This commit is contained in:
Gerd Hoffmann 2023-01-20 09:05:18 +01:00
parent 642617f431
commit 3d5f0bfe4e
2 changed files with 23 additions and 6 deletions

View file

@ -224,10 +224,8 @@
(EFI System Partition) are mounted, and also conceptually referred to as <varname>$BOOT</varname>. Can
be overridden by setting <varname>$BOOT_ROOT</varname> (see below).</para>
<para><varname>$KERNEL_INSTALL_LAYOUT=bls|uki|other|...</varname> is set for the plugins to specify the
installation layout. Defaults to <option>bls</option> if
<filename>$BOOT/<replaceable>ENTRY-TOKEN</replaceable></filename> exists, or <option>other</option>
otherwise. Additional layout names may be defined by convention. If a plugin uses a special layout,
<para><varname>$KERNEL_INSTALL_LAYOUT=auto|bls|uki|other|...</varname> is set for the plugins to specify the
installation layout. Additional layout names may be defined by convention. If a plugin uses a special layout,
it's encouraged to declare its own layout name and configure <varname>layout=</varname> in
<filename>install.conf</filename> upon initial installation. The following values are currently
understood:</para>
@ -264,6 +262,17 @@
<para>Some other layout not understood natively by <command>kernel-install</command>.</para>
</listitem>
</varlistentry>
<varlistentry>
<term>auto</term>
<listitem>
<para>Pick the layout automatically. If the kernel is a UKI set layout to
<option>uki</option>. If not default to <option>bls</option> if
<filename>$BOOT/loader/entries.srel</filename> with content <literal>type1</literal> or
<filename>$BOOT/<replaceable>ENTRY-TOKEN</replaceable></filename> exists, or
<option>other</option> otherwise.</para>
<para>Leaving layout blank has the same effect. This is the default.</para>
</listitem>
</varlistentry>
</variablelist>
<para><varname>$KERNEL_INSTALL_INITRD_GENERATOR</varname> is set for plugins to select the initrd

View file

@ -250,10 +250,18 @@ if [ -z "$ENTRY_TOKEN" ]; then
echo "No entry-token candidate matched, using \"$ENTRY_TOKEN\" from machine-id"
fi
if [ -z "$layout" ]; then
export KERNEL_INSTALL_IMAGE_TYPE=""
if [ -f "$1" ]; then
KERNEL_INSTALL_IMAGE_TYPE="$(bootctl kernel-identify "$1" 2>/dev/null || echo "unknown")"
fi
if [ "$layout" = "auto" ] || [ -z "$layout" ]; then
# No layout configured by the administrator. Let's try to figure it out
# automatically from metadata already contained in $BOOT_ROOT.
if [ -e "$BOOT_ROOT/loader/entries.srel" ]; then
if [ "$KERNEL_INSTALL_IMAGE_TYPE" = "uki" ]; then
layout="uki"
log_verbose "Kernel image is UKI, using layout=$layout"
elif [ -e "$BOOT_ROOT/loader/entries.srel" ]; then
read -r ENTRIES_SREL <"$BOOT_ROOT/loader/entries.srel"
if [ "$ENTRIES_SREL" = "type1" ]; then
# The loader/entries.srel file clearly indicates that the installed