Add infrastructure for automatic kernel updates

If the distribution supports running arbitrary scripts at kernel
updates, we can hook into it and update the ostree side of things
automatically.
This commit is contained in:
Giovanni Campagna 2012-08-14 00:11:50 +02:00
parent affa5755a6
commit a97bcc68d7
6 changed files with 295 additions and 66 deletions

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@ -28,3 +28,16 @@ ostadmin_SOURCES = src/ostadmin/main.c \
ostadmin_CFLAGS = $(AM_CFLAGS) -I$(srcdir)/src/libgsystem -I$(srcdir)/src/libotutil -I$(srcdir)/src/libostree -I$(srcdir)/src/ostadmin -DLOCALEDIR=\"$(datadir)/locale\" $(OT_INTERNAL_GIO_UNIX_CFLAGS)
ostadmin_LDADD = libgsystem.la libotutil.la libostree.la $(OT_INTERNAL_GIO_UNIX_LIBS)
if ENABLE_KERNEL_UPDATES
grub2dir = $(sysconfdir)/grub.d
grub2_SCRIPTS = src/ostadmin/grub2/15_ostree
kernelpostinstdir = $(sysconfdir)/kernel/postinst.d
kernelpostinst_SCRIPTS = src/ostadmin/kernel/15_ostree_update
kernelprermdir = $(sysconfdir)/kernel/prerm.d
kernelprerm_SCRIPTS = src/ostadmin/kernel/15_ostree_remove
endif

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@ -97,6 +97,13 @@ AS_IF([ test x$with_libarchive != xno ], [
])
AM_CONDITIONAL(USE_LIBARCHIVE, test $with_libarchive != no)
AC_ARG_ENABLE(kernel-updates,
AS_HELP_STRING([--enable-kernel-updates],
[Install configuration scripts to handle kernel updates
in the host system]), ,
enable_kernel_updates=yes)
AM_CONDITIONAL(ENABLE_KERNEL_UPDATES, test $enable_kernel_updates != no)
AC_CONFIG_FILES([
Makefile
embedded-dependencies/Makefile
@ -111,4 +118,5 @@ echo "
embedded dependencies: $enable_embedded_dependencies
libsoup (retrieve remote HTTP repositories): $with_soup
libarchive (parse tar files directly): $with_libarchive
kernel updates integration: $enable_kernel_updates
"

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@ -1,66 +0,0 @@
#!/bin/sh
set -e
. /usr/lib/grub/grub-mkconfig_lib
CLASS="--class gnu-linux --class gnu --class os"
if [ "x${GRUB_DEVICE_UUID}" = "x" ] || [ "x${GRUB_DISABLE_LINUX_UUID}" = "xtrue" ] \
|| ! test -e "/dev/disk/by-uuid/${GRUB_DEVICE_UUID}" \
|| uses_abstraction "${GRUB_DEVICE}" lvm; then
LINUX_ROOT_DEVICE=${GRUB_DEVICE}
else
LINUX_ROOT_DEVICE=UUID=${GRUB_DEVICE_UUID}
fi
ostree_linux_entry ()
{
os="$1"
version="$2"
args="$3"
printf "menuentry '${os}; Linux ${version}' ${CLASS} {\n"
cat << EOF
insmod gzio
EOF
cat <<EOF
echo '"Loading ${os} ${version}"'
linux ${rel_dirname}/${basename} root=${linux_root_device_thisversion} ro ostree=current ${args}
EOF
if test -n "${initrd}" ; then
message="$(gettext_printf "Loading initial ramdisk ...")"
cat << EOF
echo '$message'
initrd ${rel_dirname}/${initrd}
EOF
fi
cat << EOF
}
EOF
}
kernels=$(echo /boot/vmlinuz-*)
while [ "x${kernels}" != x ]; do
linux=`version_find_latest $kernels` >&2
basename=`basename $linux`
dirname=`dirname $linux`
rel_dirname=`make_system_path_relative_to_its_root $dirname`
version=`echo $basename | sed -e "s,^[^0-9]*-,,g"`
alt_version=`echo $version | sed -e "s,\.old$,,g"`
linux_root_device_thisversion="${LINUX_ROOT_DEVICE}"
initrd=
for i in "initramfs-ostree-${version}.img" "initramfs-ostree-${alt_version}.img"; do
if test -e "${dirname}/${i}" ; then
initrd="$i"
ostree_linux_entry "GNOMEOS 3.4" "${version}" \
"${GRUB_CMDLINE_LINUX}" "${GRUB_CMDLINE_LINUX_DEFAULT}"
break
fi
done
kernels=`echo $kernels | tr ' ' '\n' | grep -vx $linux | tr '\n' ' '`
done

253
src/ostadmin/grub2/15_ostree Executable file
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@ -0,0 +1,253 @@
#! /bin/sh
set -e
# grub-mkconfig helper script.
# Copyright (C) 2006,2007,2008,2009,2010 Free Software Foundation, Inc.
#
# GRUB is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# GRUB is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with GRUB. If not, see <http://www.gnu.org/licenses/>.
prefix="/usr"
exec_prefix="/usr"
datarootdir="${prefix}/share"
. "/usr/share/grub/grub-mkconfig_lib"
export TEXTDOMAIN=grub
export TEXTDOMAINDIR="${datarootdir}/locale"
CLASS="--class gnu-linux --class gnu --class os --class ostree"
OS="GNOME OS (Ostree)"
# loop-AES arranges things so that /dev/loop/X can be our root device, but
# the initrds that Linux uses don't like that.
case ${GRUB_DEVICE} in
/dev/loop/*|/dev/loop[0-9])
GRUB_DEVICE=`losetup ${GRUB_DEVICE} | sed -e "s/^[^(]*(\([^)]\+\)).*/\1/"`
;;
esac
if [ "x${GRUB_DEVICE_UUID}" = "x" ] || [ "x${GRUB_DISABLE_LINUX_UUID}" = "xtrue" ] \
|| ! test -e "/dev/disk/by-uuid/${GRUB_DEVICE_UUID}" \
|| uses_abstraction "${GRUB_DEVICE}" lvm; then
LINUX_ROOT_DEVICE=${GRUB_DEVICE}
else
LINUX_ROOT_DEVICE=UUID=${GRUB_DEVICE_UUID}
fi
GRUBFS="`${grub_probe} --device ${GRUB_DEVICE} --target=fs 2>/dev/null || true`"
if [ x"$GRUBFS" = x ]; then
GRUBFS="$(stat -f --printf=%T / || true)"
fi
case x"$GRUBFS" in
xbtrfs)
rootsubvol="`make_system_path_relative_to_its_root /`"
rootsubvol="${rootsubvol#/}"
if [ "x${rootsubvol}" != x ]; then
GRUB_CMDLINE_LINUX="rootflags=subvol=${rootsubvol} ${GRUB_CMDLINE_LINUX}"
fi;;
xzfs)
rpool=`${grub_probe} --device ${GRUB_DEVICE} --target=fs_label 2>/dev/null || true`
bootfs="`make_system_path_relative_to_its_root / | sed -e "s,@$,,"`"
LINUX_ROOT_DEVICE="ZFS=${rpool}${bootfs}"
;;
esac
title_correction_code=
linux_entry ()
{
os="$1"
version="$2"
type="$3"
args="$4"
if [ -z "$boot_device_id" ]; then
boot_device_id="$(grub_get_device_id "${GRUB_DEVICE}")"
fi
if [ x$type != xsimple ] ; then
case $type in
recovery)
title="$(gettext_printf "%s, with Linux %s (recovery mode)" "${os}" "${version}")" ;;
*)
title="$(gettext_printf "%s, with Linux %s" "${os}" "${version}")" ;;
esac
if [ x"$title" = x"$GRUB_ACTUAL_DEFAULT" ] || [ x"Previous Linux versions>$title" = x"$GRUB_ACTUAL_DEFAULT" ]; then
replacement_title="$(echo "Advanced options for ${OS}" | sed 's,>,>>,g')>$(echo "$title" | sed 's,>,>>,g')"
quoted="$(echo "$GRUB_ACTUAL_DEFAULT" | grub_quote)"
title_correction_code="${title_correction_code}if [ \"x\$default\" = '$quoted' ]; then default='$(echo "$replacement_title" | grub_quote)'; fi;"
grub_warn "$(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")"
fi
echo "menuentry '$(echo "$title" | grub_quote)' ${CLASS} \$menuentry_id_option 'gnulinux-$version-$type-$boot_device_id' {" | sed "s/^/$submenu_indentation/"
else
echo "menuentry '$(echo "$os" | grub_quote)' ${CLASS} \$menuentry_id_option 'gnulinux-simple-$boot_device_id' {" | sed "s/^/$submenu_indentation/"
fi
if [ x$type != xrecovery ] ; then
save_default_entry | sed -e "s/^/\t/"
fi
# Use ELILO's generic "efifb" when it's known to be available.
# FIXME: We need an interface to select vesafb in case efifb can't be used.
if [ "x$GRUB_GFXPAYLOAD_LINUX" = x ]; then
echo " load_video" | sed "s/^/$submenu_indentation/"
if grep -qx "CONFIG_FB_EFI=y" "${config}" 2> /dev/null \
&& grep -qx "CONFIG_VT_HW_CONSOLE_BINDING=y" "${config}" 2> /dev/null; then
echo " set gfxpayload=keep" | sed "s/^/$submenu_indentation/"
fi
else
if [ "x$GRUB_GFXPAYLOAD_LINUX" != xtext ]; then
echo " load_video" | sed "s/^/$submenu_indentation/"
fi
echo " set gfxpayload=$GRUB_GFXPAYLOAD_LINUX" | sed "s/^/$submenu_indentation/"
fi
echo " insmod gzio" | sed "s/^/$submenu_indentation/"
if [ x$dirname = x/ ]; then
if [ -z "${prepare_root_cache}" ]; then
prepare_root_cache="$(prepare_grub_to_access_device ${GRUB_DEVICE} | sed -e "s/^/\t/")"
fi
printf '%s\n' "${prepare_root_cache}" | sed "s/^/$submenu_indentation/"
else
if [ -z "${prepare_boot_cache}" ]; then
prepare_boot_cache="$(prepare_grub_to_access_device ${GRUB_DEVICE_BOOT} | sed -e "s/^/\t/")"
fi
printf '%s\n' "${prepare_boot_cache}" | sed "s/^/$submenu_indentation/"
fi
message="$(gettext_printf "Loading Linux %s ..." ${version})"
sed "s/^/$submenu_indentation/" << EOF
echo '$message'
linux ${rel_dirname}/${basename} root=${linux_root_device_thisversion} ro ${args}
EOF
if test -n "${initrd}" ; then
# TRANSLATORS: ramdisk isn't identifier. Should be translated.
message="$(gettext_printf "Loading initial ramdisk ...")"
sed "s/^/$submenu_indentation/" << EOF
echo '$message'
initrd ${rel_dirname}/${initrd}
EOF
fi
sed "s/^/$submenu_indentation/" << EOF
}
EOF
}
machine=`uname -m`
case "x$machine" in
xi?86 | xx86_64)
list=`for i in /boot/vmlinuz-* /vmlinuz-* /boot/kernel-* ; do
if grub_file_is_not_garbage "$i" ; then echo -n "$i " ; fi
done` ;;
*)
list=`for i in /boot/vmlinuz-* /boot/vmlinux-* /vmlinuz-* /vmlinux-* /boot/kernel-* ; do
if grub_file_is_not_garbage "$i" ; then echo -n "$i " ; fi
done` ;;
esac
case "$machine" in
i?86) GENKERNEL_ARCH="x86" ;;
mips|mips64) GENKERNEL_ARCH="mips" ;;
mipsel|mips64el) GENKERNEL_ARCH="mipsel" ;;
arm*) GENKERNEL_ARCH="arm" ;;
*) GENKERNEL_ARCH="$machine" ;;
esac
prepare_boot_cache=
prepare_root_cache=
boot_device_id=
title_correction_code=
# Extra indentation to add to menu entries in a submenu. We're not in a submenu
# yet, so it's empty. In a submenu it will be equal to '\t' (one tab).
submenu_indentation=""
is_first_entry=true
while [ "x$list" != "x" ] ; do
linux=`version_find_latest $list`
gettext_printf "Found linux image: %s\n" "$linux" >&2
basename=`basename $linux`
dirname=`dirname $linux`
rel_dirname=`make_system_path_relative_to_its_root $dirname`
version=`echo $basename | sed -e "s,^[^0-9]*-,,g"`
alt_version=`echo $version | sed -e "s,\.old$,,g"`
linux_root_device_thisversion="${LINUX_ROOT_DEVICE}"
initrd=
config=
initramfs=
for i in "initrd.img-ostree-${version}" "initrd-ostree-${version}.img" "initrd-ostree-${version}.gz" \
"initrd-ostree-${version}" "initramfs-ostree-${version}.img" \
"initrd.img-ostree-${alt_version}" "initrd-ostree-${alt_version}.img" \
"initrd-ostree-${alt_version}" "initramfs-ostree-${alt_version}.img"; do
if test -e "${dirname}/${i}" ; then
initrd="$i"
break
fi
done
config=
for i in "${dirname}/config-${version}" "${dirname}/config-${alt_version}" "/etc/kernels/kernel-config-${version}" ; do
if test -e "${i}" ; then
config="${i}"
break
fi
done
initramfs=
if test -n "${config}" ; then
initramfs=`grep CONFIG_INITRAMFS_SOURCE= "${config}" | cut -f2 -d= | tr -d \"`
fi
if test -n "${initrd}" ; then
gettext_printf "Found initrd image: %s\n" "${dirname}/${initrd}" >&2
elif test -z "${initramfs}" ; then
# ostree can't work without initrd
gettext_printf "Skipping version %s (missing initrd)\n" "${version}" >&2
list=`echo $list | tr ' ' '\n' | grep -vx $linux | tr '\n' ' '`
continue
fi
if [ "x$is_first_entry" = xtrue ]; then
linux_entry "${OS}" "${version}" simple \
"${GRUB_CMDLINE_LINUX} ${GRUB_CMDLINE_LINUX_DEFAULT} ostree=${GRUB_OSTREE_REVISION}"
submenu_indentation="\t"
if [ -z "$boot_device_id" ]; then
boot_device_id="$(grub_get_device_id "${GRUB_DEVICE}")"
fi
# TRANSLATORS: %s is replaced with an OS name
echo "submenu '$(gettext_printf "Advanced options for %s" "${OS}" | grub_quote)' \$menuentry_id_option 'gnulinux-advanced-$boot_device_id' {"
fi
linux_entry "${OS}" "${version}" advanced \
"${GRUB_CMDLINE_LINUX} ${GRUB_CMDLINE_LINUX_DEFAULT} ostree=${GRUB_OSTREE_REVISION}"
if [ "x${GRUB_DISABLE_RECOVERY}" != "xtrue" ]; then
linux_entry "${OS}" "${version}" recovery \
"single ${GRUB_CMDLINE_LINUX} ostree=${GRUB_OSTREE_REVISION}"
fi
list=`echo $list | tr ' ' '\n' | grep -vx $linux | tr '\n' ' '`
is_first_entry=false
done
# If at least one kernel was found, then we need to
# add a closing '}' for the submenu command.
if [ x"$is_first_entry" != xtrue ]; then
echo '}'
fi
echo "$title_correction_code"

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@ -0,0 +1,11 @@
#!/bin/sh
version=$1
if [ -z "$version" ]; then
echo "$0: kernel version required"
exit 1
fi
rm -fR "/ostree/modules/${version}"
rm -fR "/boot/initramfs-ostree-${version}.img"

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@ -0,0 +1,10 @@
#!/bin/sh
version=$1
if [ -z "$version" ]; then
echo "$0: kernel version required"
exit 1
fi
ostadmin update-kernel current/ ${version}