178 lines
6.8 KiB
Bash
Executable File
178 lines
6.8 KiB
Bash
Executable File
extract_live_grub_entry() {
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cfg="$1"
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live_linux="$(awk '/^[[:space:]]*linux[[:space:]]+\/live\// { print; exit }' "$cfg")"
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live_initrd="$(awk '/^[[:space:]]*initrd[[:space:]]+\/live\// { print; exit }' "$cfg")"
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[ -n "$live_linux" ] || return 1
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[ -n "$live_initrd" ] || return 1
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grub_kernel="$(printf '%s\n' "$live_linux" | awk '{print $2}')"
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grub_append="$(printf '%s\n' "$live_linux" | cut -d' ' -f3-)"
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grub_initrd="$(printf '%s\n' "$live_initrd" | awk '{print $2}')"
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[ -n "$grub_kernel" ] || return 1
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[ -n "$grub_append" ] || return 1
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[ -n "$grub_initrd" ] || return 1
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return 0
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}
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load_live_build_boot_config() {
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lb_dir="$1"
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binary_cfg="$lb_dir/config/binary"
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chroot_cfg="$lb_dir/config/chroot"
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[ -f "$binary_cfg" ] || return 1
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[ -f "$chroot_cfg" ] || return 1
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# These files are generated by live-build. Its configuration code derives
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# LB_LINUX_FLAVOURS by removing an optional :architecture suffix from each
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# LB_LINUX_FLAVOURS_WITH_ARCH item; the default flavour is the first item.
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unset LB_BOOTAPPEND_LIVE LB_LINUX_FLAVOURS_WITH_ARCH
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# shellcheck disable=SC1090
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. "$binary_cfg"
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# shellcheck disable=SC1090
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. "$chroot_cfg"
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[ -n "${LB_BOOTAPPEND_LIVE:-}" ] || return 1
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[ -n "${LB_LINUX_FLAVOURS_WITH_ARCH:-}" ] || return 1
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live_build_append="$LB_BOOTAPPEND_LIVE"
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live_build_flavour="$(printf '%s\n' "$LB_LINUX_FLAVOURS_WITH_ARCH" | awk '{ split($1, item, ":"); print item[1] }')"
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[ -n "$live_build_flavour" ] || return 1
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return 0
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}
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extract_live_isolinux_entry() {
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cfg="$1"
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isolinux_linux="$(awk '/^[[:space:]]*linux[[:space:]]+\/live\// { print; exit }' "$cfg")"
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isolinux_initrd="$(awk '/^[[:space:]]*initrd[[:space:]]+\/live\// { print; exit }' "$cfg")"
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isolinux_append="$(awk '/^[[:space:]]*append[[:space:]]+/ { sub(/^[[:space:]]*append[[:space:]]+/, ""); print; exit }' "$cfg")"
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[ -n "$isolinux_linux" ] || return 1
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[ -n "$isolinux_initrd" ] || return 1
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[ -n "$isolinux_append" ] || return 1
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isolinux_kernel="$(printf '%s\n' "$isolinux_linux" | awk '{print $2}')"
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isolinux_initrd_path="$(printf '%s\n' "$isolinux_initrd" | awk '{print $2}')"
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[ -n "$isolinux_kernel" ] || return 1
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[ -n "$isolinux_initrd_path" ] || return 1
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return 0
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}
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write_canonical_grub_cfg() {
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cfg="$1"
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kernel="$2"
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append_live="$3"
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initrd="$4"
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version_label="${PROJECT_VERSION_EFFECTIVE}"
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template="${BUILDER_DIR}/config/bootloaders/grub-efi/grub.cfg"
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tmp_cfg="${cfg}.new"
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render_bootloader_template "$template" "$tmp_cfg" \
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"$version_label" "@KERNEL_LIVE@" "$kernel" "$append_live" "@INITRD_LIVE@" "$initrd"
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mv "$tmp_cfg" "$cfg"
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}
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write_canonical_isolinux_cfg() {
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cfg="$1"
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kernel="$2"
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initrd="$3"
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append_live="$4"
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flavour="$5"
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version_label="${PROJECT_VERSION_EFFECTIVE}"
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template="${BUILDER_DIR}/config/bootloaders/isolinux/live.cfg.in"
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tmp_cfg="${cfg}.new"
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render_bootloader_template "$template" "$tmp_cfg" \
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"$version_label" "@LINUX@" "$kernel" "$append_live" "@INITRD@" "$initrd" "$flavour"
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mv "$tmp_cfg" "$cfg"
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}
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# Render literal placeholders without sed replacement-string semantics. Values
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# containing '&', backslashes, or the sed delimiter must be copied unchanged.
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render_bootloader_template() {
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template="$1"
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output="$2"
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version="$3"
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kernel_placeholder="$4"
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kernel="$5"
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append_live="$6"
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initrd_placeholder="$7"
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initrd="$8"
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flavour="${9:-}"
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for required_placeholder in \
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"@VERSION@" \
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"$kernel_placeholder" \
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"@APPEND_LIVE@" \
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"$initrd_placeholder"; do
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require_template_placeholder "$template" "$required_placeholder" || return 1
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done
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if grep -Fq '@FLAVOUR@' "$template" && [ -z "$flavour" ]; then
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echo "ERROR: template $template requires a non-empty @FLAVOUR@ value" >&2
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return 1
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fi
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BEE_RENDER_VERSION="$version" \
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BEE_RENDER_KERNEL_PLACEHOLDER="$kernel_placeholder" \
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BEE_RENDER_KERNEL="$kernel" \
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BEE_RENDER_APPEND="$append_live" \
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BEE_RENDER_INITRD_PLACEHOLDER="$initrd_placeholder" \
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BEE_RENDER_INITRD="$initrd" \
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BEE_RENDER_FLAVOUR="$flavour" \
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awk '
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function replace_literal(text, needle, replacement, at) {
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while ((at = index(text, needle)) != 0) {
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text = substr(text, 1, at - 1) replacement substr(text, at + length(needle))
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}
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return text
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}
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{
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version = ENVIRON["BEE_RENDER_VERSION"]
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kernel_placeholder = ENVIRON["BEE_RENDER_KERNEL_PLACEHOLDER"]
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kernel = ENVIRON["BEE_RENDER_KERNEL"]
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append_live = ENVIRON["BEE_RENDER_APPEND"]
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initrd_placeholder = ENVIRON["BEE_RENDER_INITRD_PLACEHOLDER"]
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initrd = ENVIRON["BEE_RENDER_INITRD"]
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flavour = ENVIRON["BEE_RENDER_FLAVOUR"]
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line = replace_literal($0, "@VERSION@", version)
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line = replace_literal(line, kernel_placeholder, kernel)
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line = replace_literal(line, "@APPEND_LIVE@", append_live)
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line = replace_literal(line, initrd_placeholder, initrd)
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line = replace_literal(line, "@FLAVOUR@", flavour)
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print line
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}
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' "$template" > "$output"
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}
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enforce_live_build_bootloader_assets() {
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lb_dir="$1"
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grub_cfg="$lb_dir/binary/boot/grub/grub.cfg"
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grub_dir="$lb_dir/binary/boot/grub"
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isolinux_cfg="$lb_dir/binary/isolinux/live.cfg"
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if ! load_live_build_boot_config "$lb_dir"; then
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echo "bootloader sync: WARNING: could not load live boot settings from $lb_dir/config" >&2
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live_build_append=""
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live_build_flavour=""
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fi
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if [ -f "$grub_cfg" ]; then
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if extract_live_grub_entry "$grub_cfg"; then
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cp "${BUILDER_DIR}/config/bootloaders/grub-efi/config.cfg" "$grub_dir/config.cfg"
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write_canonical_grub_cfg "$grub_cfg" "$grub_kernel" "${live_build_append:-$grub_append}" "$grub_initrd"
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echo "bootloader sync: rewrote binary/boot/grub/grub.cfg with canonical EASY-BEE menu"
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else
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echo "bootloader sync: WARNING: could not extract live entry from $grub_cfg" >&2
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fi
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fi
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if [ -f "$isolinux_cfg" ]; then
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if extract_live_isolinux_entry "$isolinux_cfg"; then
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if [ -n "$live_build_flavour" ]; then
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write_canonical_isolinux_cfg "$isolinux_cfg" "$isolinux_kernel" "$isolinux_initrd_path" "${live_build_append:-$isolinux_append}" "$live_build_flavour"
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echo "bootloader sync: rewrote binary/isolinux/live.cfg with canonical EASY-BEE menu"
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else
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echo "bootloader sync: WARNING: could not determine live-build kernel flavour" >&2
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fi
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else
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echo "bootloader sync: WARNING: could not extract live entry from $isolinux_cfg" >&2
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fi
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fi
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}
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