initial commit
This commit is contained in:
James Barnett
parent
a2048588af
commit
d92c259b70
3 changed files with 300 additions and 0 deletions
2
Makefile
2
Makefile
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@ -19,6 +19,7 @@ PKGNAME = snap-pac
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PREFIX ?= /usr
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SHARE_DIR = $(DESTDIR)$(PREFIX)/share
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ETC_DIR = $(DESTDIR)$(PREFIX)/etc
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.PHONY: install
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@ -28,3 +29,4 @@ install:
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@install -Dm644 LICENSE -t $(SHARE_DIR)/licenses/$(PKGNAME)
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@install -Dm644 man8/* -t $(SHARE_DIR)/man/man8
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@install -Dm644 README -t $(SHARE_DIR)/doc/$(PKGNAME)
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@install -Dm644 grub.d/* -t $(ETC_DIR)/grub.d/
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282
grub.d/10_linux_symlink
Executable file
282
grub.d/10_linux_symlink
Executable file
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@ -0,0 +1,282 @@
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#! /bin/sh
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set -e
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# grub-mkconfig helper script.
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# Copyright (C) 2006,2007,2008,2009,2010 Free Software Foundation, Inc.
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#
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# GRUB is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# GRUB is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with GRUB. If not, see <http://www.gnu.org/licenses/>.
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prefix="/usr"
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exec_prefix="/usr"
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datarootdir="/usr/share"
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. "$pkgdatadir/grub-mkconfig_lib"
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export TEXTDOMAIN=grub
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export TEXTDOMAINDIR="${datarootdir}/locale"
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CLASS="--class gnu-linux --class gnu --class os"
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if [ "x${GRUB_DISTRIBUTOR}" = "x" ] ; then
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OS=Linux
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else
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OS="${GRUB_DISTRIBUTOR} Linux"
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CLASS="--class $(echo ${GRUB_DISTRIBUTOR} | tr 'A-Z' 'a-z' | cut -d' ' -f1|LC_ALL=C sed 's,[^[:alnum:]_],_,g') ${CLASS}"
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fi
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# loop-AES arranges things so that /dev/loop/X can be our root device, but
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# the initrds that Linux uses don't like that.
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case ${GRUB_DEVICE} in
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/dev/loop/*|/dev/loop[0-9])
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GRUB_DEVICE=`losetup ${GRUB_DEVICE} | sed -e "s/^[^(]*(\([^)]\+\)).*/\1/"`
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;;
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esac
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# btrfs may reside on multiple devices. We cannot pass them as value of root= parameter
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# and mounting btrfs requires user space scanning, so force UUID in this case.
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if [ "x${GRUB_DEVICE_UUID}" = "x" ] || [ "x${GRUB_DISABLE_LINUX_UUID}" = "xtrue" ] \
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|| ! test -e "/dev/disk/by-uuid/${GRUB_DEVICE_UUID}" \
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|| ( test -e "${GRUB_DEVICE}" && uses_abstraction "${GRUB_DEVICE}" lvm ); then
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LINUX_ROOT_DEVICE=${GRUB_DEVICE}
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else
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LINUX_ROOT_DEVICE=UUID=${GRUB_DEVICE_UUID}
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fi
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case x"$GRUB_FS" in
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xbtrfs)
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rootsubvol="`make_system_path_relative_to_its_root /`"
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rootsubvol="${rootsubvol#/}"
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if [ "x${rootsubvol}" != x ]; then
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GRUB_CMDLINE_LINUX="rootflags=subvol=${rootsubvol} ${GRUB_CMDLINE_LINUX}"
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fi;;
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xzfs)
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rpool=`${grub_probe} --device ${GRUB_DEVICE} --target=fs_label 2>/dev/null || true`
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bootfs="`make_system_path_relative_to_its_root / | sed -e "s,@$,,"`"
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LINUX_ROOT_DEVICE="ZFS=${rpool}${bootfs}"
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;;
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esac
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title_correction_code=
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linux_entry ()
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{
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os="$1"
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version="$2"
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type="$3"
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args="$4"
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if [ -z "$boot_device_id" ]; then
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boot_device_id="$(grub_get_device_id "${GRUB_DEVICE}")"
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fi
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if [ x$type != xsimple ] ; then
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case $type in
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recovery)
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title="$(gettext_printf "%s, with Linux %s (recovery mode)" "${os}" "${version}")" ;;
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fallback)
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title="$(gettext_printf "%s, with Linux %s (fallback initramfs)" "${os}" "${version}")" ;;
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*)
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title="$(gettext_printf "%s, with Linux %s" "${os}" "${version}")" ;;
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esac
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if [ x"$title" = x"$GRUB_ACTUAL_DEFAULT" ] || [ x"Previous Linux versions>$title" = x"$GRUB_ACTUAL_DEFAULT" ]; then
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replacement_title="$(echo "Advanced options for ${OS}" | sed 's,>,>>,g')>$(echo "$title" | sed 's,>,>>,g')"
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quoted="$(echo "$GRUB_ACTUAL_DEFAULT" | grub_quote)"
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title_correction_code="${title_correction_code}if [ \"x\$default\" = '$quoted' ]; then default='$(echo "$replacement_title" | grub_quote)'; fi;"
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grub_warn "$(gettext_printf "Please don't use old title \`%s' for GRUB_DEFAULT, use \`%s' (for versions before 2.00) or \`%s' (for 2.00 or later)" "$GRUB_ACTUAL_DEFAULT" "$replacement_title" "gnulinux-advanced-$boot_device_id>gnulinux-$version-$type-$boot_device_id")"
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fi
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echo "menuentry '$(echo "$title" | grub_quote)' ${CLASS} \$menuentry_id_option 'gnulinux-$version-$type-$boot_device_id' {" | sed "s/^/$submenu_indentation/"
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else
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echo "menuentry '$(echo "$os" | grub_quote)' ${CLASS} \$menuentry_id_option 'gnulinux-simple-$boot_device_id' {" | sed "s/^/$submenu_indentation/"
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fi
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if [ x$type != xrecovery ] ; then
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save_default_entry | grub_add_tab
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fi
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# Use ELILO's generic "efifb" when it's known to be available.
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# FIXME: We need an interface to select vesafb in case efifb can't be used.
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if [ "x$GRUB_GFXPAYLOAD_LINUX" = x ]; then
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echo " load_video" | sed "s/^/$submenu_indentation/"
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if grep -qx "CONFIG_FB_EFI=y" "${config}" 2> /dev/null \
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&& grep -qx "CONFIG_VT_HW_CONSOLE_BINDING=y" "${config}" 2> /dev/null; then
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echo " set gfxpayload=keep" | sed "s/^/$submenu_indentation/"
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fi
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else
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if [ "x$GRUB_GFXPAYLOAD_LINUX" != xtext ]; then
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echo " load_video" | sed "s/^/$submenu_indentation/"
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fi
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echo " set gfxpayload=$GRUB_GFXPAYLOAD_LINUX" | sed "s/^/$submenu_indentation/"
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fi
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echo " insmod gzio" | sed "s/^/$submenu_indentation/"
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if [ x$dirname = x/ ]; then
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if [ -z "${prepare_root_cache}" ]; then
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prepare_root_cache="$(prepare_grub_to_access_device ${GRUB_DEVICE} | grub_add_tab)"
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fi
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printf '%s\n' "${prepare_root_cache}" | sed "s/^/$submenu_indentation/"
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else
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if [ -z "${prepare_boot_cache}" ]; then
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prepare_boot_cache="$(prepare_grub_to_access_device ${GRUB_DEVICE_BOOT} | grub_add_tab)"
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fi
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printf '%s\n' "${prepare_boot_cache}" | sed "s/^/$submenu_indentation/"
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fi
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message="$(gettext_printf "Loading Linux %s ..." ${version})"
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sed "s/^/$submenu_indentation/" << EOF
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echo '$(echo "$message" | grub_quote)'
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linux ${rel_dirname}/${basename} root=${linux_root_device_thisversion} rw ${args}
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EOF
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if test -n "${initrd}" -o -n "${initrd_extra}" ; then
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# TRANSLATORS: ramdisk isn't identifier. Should be translated.
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message="$(gettext_printf "Loading initial ramdisk ...")"
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printf ' %s\n' "echo '$(echo "$message" | grub_quote)'" | sed "s/^/$submenu_indentation/"
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printf ' %s ' 'initrd' | sed "s/^/$submenu_indentation/"
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for i in ${initrd_extra} ${initrd}; do
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printf ' %s/%s' "${rel_dirname}" "${i}"
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done
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printf '\n'
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fi
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sed "s/^/$submenu_indentation/" << EOF
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}
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EOF
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}
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machine=`uname -m`
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case "x$machine" in
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xi?86 | xx86_64)
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list=
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for i in /boot/old/vmlinuz-*; do
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if grub_file_is_not_garbage "$i" && [[ -h $i ]]; then list="$list $i" ; fi
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done ;;
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*)
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list=
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for i in /boot/old/vmlinuz-*; do
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if grub_file_is_not_garbage "$i" && [[ -h $i ]]; then list="$list $i" ; fi
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done ;;
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esac
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case "$machine" in
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i?86) GENKERNEL_ARCH="x86" ;;
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mips|mips64) GENKERNEL_ARCH="mips" ;;
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mipsel|mips64el) GENKERNEL_ARCH="mipsel" ;;
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arm*) GENKERNEL_ARCH="arm" ;;
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*) GENKERNEL_ARCH="$machine" ;;
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esac
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prepare_boot_cache=
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prepare_root_cache=
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boot_device_id=
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title_correction_code=
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# Extra indentation to add to menu entries in a submenu. We're not in a submenu
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# yet, so it's empty. In a submenu it will be equal to '\t' (one tab).
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submenu_indentation=""
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gettext_printf "Generating entries for older versions...\n" >&2
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is_top_level=true
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while [ "x$list" != "x" ] ; do
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linux=`version_find_latest $list`
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link=`readlink $linux`
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basename=`basename $link`
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dirname=`dirname $link`
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rel_dirname=`make_system_path_relative_to_its_root $dirname`
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version=`echo $basename | sed -e "s,vmlinuz-,,g"`
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version_=`echo $(basename $linux) | sed -e "s,vmlinuz-,,g"`
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gettext_printf "Found linux image: %s (%s)\n" "$link" "$version_" >&2
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alt_version=`echo $version | sed -e "s,\.old$,,g"`
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linux_root_device_thisversion="${LINUX_ROOT_DEVICE}"
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initrd=
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for i in "initrd.img-${version}" "initrd-${version}.img" "initrd-${version}.gz" \
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"initrd-${version}" "initramfs-${version}.img" \
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"initrd.img-${alt_version}" "initrd-${alt_version}.img" \
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"initrd-${alt_version}" "initramfs-${alt_version}.img" \
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"initramfs-genkernel-${version}" \
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"initramfs-genkernel-${alt_version}" \
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"initramfs-genkernel-${GENKERNEL_ARCH}-${version}" \
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"initramfs-genkernel-${GENKERNEL_ARCH}-${alt_version}"; do
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if test -e "${dirname}/${i}" ; then
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initrd="$i"
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break
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fi
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done
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initrd_extra=
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for i in intel-ucode.img; do
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if test -e "${dirname}/${i}" ; then
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initrd_extra="${initrd_extra} ${i}"
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fi
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done
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config=
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for i in "${dirname}/config-${version}" "${dirname}/config-${alt_version}" "/etc/kernels/kernel-config-${version}" ; do
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if test -e "${i}" ; then
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config="${i}"
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break
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fi
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done
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initramfs=
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if test -n "${config}" ; then
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initramfs=`grep CONFIG_INITRAMFS_SOURCE= "${config}" | cut -f2 -d= | tr -d \"`
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fi
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if test -n "${initrd}" -o -n "${initrd_extra}" ; then
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gettext_printf "Found initrd image(s) in %s:%s\n" "${dirname}" "${initrd_extra} ${initrd}" >&2
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elif test -z "${initramfs}" ; then
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# "UUID=" and "ZFS=" magic is parsed by initrd or initramfs. Since there's
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# no initrd or builtin initramfs, it can't work here.
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linux_root_device_thisversion=${GRUB_DEVICE}
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fi
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if [ "x$is_top_level" = xtrue ] && [ "x${GRUB_DISABLE_SUBMENU}" != xy ]; then
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linux_entry "${OS}" "${version}" simple \
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"${GRUB_CMDLINE_LINUX} ${GRUB_CMDLINE_LINUX_DEFAULT}"
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submenu_indentation="$grub_tab"
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if [ -z "$boot_device_id" ]; then
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boot_device_id="$(grub_get_device_id "${GRUB_DEVICE}")"
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fi
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# TRANSLATORS: %s is replaced with an OS name
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echo "submenu '$(gettext_printf "Advanced options for %s" "${OS}" | grub_quote)' \$menuentry_id_option 'gnulinux-advanced-$boot_device_id' {"
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is_top_level=false
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fi
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linux_entry "${OS}" "${version_}" advanced \
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"${GRUB_CMDLINE_LINUX} ${GRUB_CMDLINE_LINUX_DEFAULT}"
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if test -e "${dirname}/initramfs-linux-fallback.img" ; then
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initrd="initramfs-linux-fallback.img"
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if test -n "${initrd}" ; then
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gettext_printf "Found fallback initrd image(s) in %s:%s\n" "${dirname}" "${initrd_extra} ${initrd}" >&2
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fi
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linux_entry "${OS}" "${version_}" fallback \
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"${GRUB_CMDLINE_LINUX} ${GRUB_CMDLINE_LINUX_DEFAULT}"
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fi
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if [ "x${GRUB_DISABLE_RECOVERY}" != "xtrue" ]; then
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linux_entry "${OS}" "${version_}" recovery \
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"single ${GRUB_CMDLINE_LINUX}"
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fi
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list=`echo $list | tr ' ' '\n' | fgrep -vx "$linux" | tr '\n' ' '`
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done
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# If at least one kernel was found, then we need to
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# add a closing '}' for the submenu command.
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if [ x"$is_top_level" != xtrue ]; then
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echo '}'
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fi
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echo "$title_correction_code"
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@ -51,6 +51,7 @@ set_defaults() {
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PACMAN_PRE_DESCRIPTION="$pacman_cmd"
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PACMAN_POST_DESCRIPTION="$pacman_cmd"
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PACMAN_CLEANUP_ALGORITHM="number"
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PACMAN_KEEP_OLD_KERNELS="no"
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}
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trap error_exit ERR
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@ -71,7 +72,22 @@ for CONFIG in $SNAPPER_CONFIGS; do
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if [[ "$pre_or_post" == "pre" ]]; then
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x=$($snapper_cmd "$(truncate_description $PACMAN_PRE_DESCRIPTION)")
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printf "==> %s: $(echo $x | tee "$prefile")\n" "$CONFIG"
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if [[ $CONFIG == "root" && $PACMAN_KEEP_OLD_KERNELS == "yes" ]]; then
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[[ -d /boot/old ]] && mkdir -p /boot/old
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find /usr/lib/modules -xtype l -delete
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find /boot/old -xtype l -delete
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ln -s /.snapshots/$x/snapshot/boot/vmlinuz-linux/boot/old/vmlinuz-linux-$(uname -r)
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fi
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elif [[ -f $prefile && "$pre_or_post" == "post" ]]; then
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if [[ $CONFIG == "root" $PACMAN_KEEP_OLD_KERNELS == "yes" ]]; then
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x=$(<$prefile)
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ln -s /.snapshots/$x/snapshot/usr/lib/modules/$(uname -r) /usr/lib/modules/
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kver=$(pacman -Q linux | awk '{print $2}')-ARCH
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mv /boot/vmlinuz-linux /boot/vmlinuz-linux-$kver
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mv /boot/initramfs-linux.img /boot/initramfs-linux-$kver.img
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mv /boot/initramfs-linux-fallback.img /boot/initramfs-linux-$kver-fallback.img
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grub-mkconfig -o /boot/grub/grub.cfg
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fi
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x=$($snapper_cmd "$(truncate_description $PACMAN_POST_DESCRIPTION)" --pre-number "$(< "$prefile")")
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printf "==> %s: %s\n" "$CONFIG" "$x"
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rm -f "$prefile"
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Loading…
Add table
Reference in a new issue