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kernel-install: handle uki installs automatically
Detect image type using "bootctl kernel-identify $kernel", store result in KERNEL_INSTALL_IMAGE_TYPE. Extend layout autodetection to check the kernel image type and pick layout=uki for UKIs. Resolves: #25822
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@ -224,10 +224,8 @@
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(EFI System Partition) are mounted, and also conceptually referred to as <varname>$BOOT</varname>. Can
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be overridden by setting <varname>$BOOT_ROOT</varname> (see below).</para>
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<para><varname>$KERNEL_INSTALL_LAYOUT=bls|uki|other|...</varname> is set for the plugins to specify the
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installation layout. Defaults to <option>bls</option> if
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<filename>$BOOT/<replaceable>ENTRY-TOKEN</replaceable></filename> exists, or <option>other</option>
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otherwise. Additional layout names may be defined by convention. If a plugin uses a special layout,
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<para><varname>$KERNEL_INSTALL_LAYOUT=auto|bls|uki|other|...</varname> is set for the plugins to specify the
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installation layout. Additional layout names may be defined by convention. If a plugin uses a special layout,
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it's encouraged to declare its own layout name and configure <varname>layout=</varname> in
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<filename>install.conf</filename> upon initial installation. The following values are currently
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understood:</para>
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@ -264,6 +262,17 @@
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<para>Some other layout not understood natively by <command>kernel-install</command>.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term>auto</term>
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<listitem>
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<para>Pick the layout automatically. If the kernel is a UKI set layout to
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<option>uki</option>. If not default to <option>bls</option> if
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<filename>$BOOT/loader/entries.srel</filename> with content <literal>type1</literal> or
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<filename>$BOOT/<replaceable>ENTRY-TOKEN</replaceable></filename> exists, or
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<option>other</option> otherwise.</para>
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<para>Leaving layout blank has the same effect. This is the default.</para>
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</listitem>
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</varlistentry>
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</variablelist>
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<para><varname>$KERNEL_INSTALL_INITRD_GENERATOR</varname> is set for plugins to select the initrd
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@ -250,10 +250,18 @@ if [ -z "$ENTRY_TOKEN" ]; then
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echo "No entry-token candidate matched, using \"$ENTRY_TOKEN\" from machine-id"
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fi
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if [ -z "$layout" ]; then
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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 $BOOT_ROOT.
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if [ -e "$BOOT_ROOT/loader/entries.srel" ]; then
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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
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