mirror of
https://git.yoctoproject.org/poky
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ff525695f2
As stated in our top level license files, the license is MIT unless otherwise stated. Add SPDX identifers accordingly. Replace older license statementa with the standardised syntax. Also drop "All Rights Reserved" expression as it isn't used now, doesn't mean anything and is confusing. (From OE-Core rev: 081a391fe09a21265881e39a2a496e4e10b4f80b) Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
112 lines
3.6 KiB
Plaintext
112 lines
3.6 KiB
Plaintext
#
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# Copyright OpenEmbedded Contributors
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#
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# SPDX-License-Identifier: MIT
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#
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#
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# While installing a rpm to update kernel on a deployed target, it will update
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# the boot area and the boot menu with the kernel as the priority but allow
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# you to fall back to the original kernel as well.
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#
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# - In kernel-image's preinstall scriptlet, it backs up original kernel to avoid
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# probable confliction with the new one.
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#
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# - In kernel-image's postinstall scriptlet, it modifies grub's config file to
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# updates the new kernel as the boot priority.
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#
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python __anonymous () {
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import re
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preinst = '''
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# Parsing confliction
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[ -f "$D/boot/grub/menu.list" ] && grubcfg="$D/boot/grub/menu.list"
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[ -f "$D/boot/grub/grub.cfg" ] && grubcfg="$D/boot/grub/grub.cfg"
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if [ -n "$grubcfg" ]; then
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# Dereference symlink to avoid confliction with new kernel name.
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if grep -q "/KERNEL_IMAGETYPE \+root=" $grubcfg; then
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if [ -L "$D/boot/KERNEL_IMAGETYPE" ]; then
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kimage=`realpath $D/boot/KERNEL_IMAGETYPE 2>/dev/null`
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if [ -f "$D$kimage" ]; then
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sed -i "s:KERNEL_IMAGETYPE \+root=:${kimage##*/} root=:" $grubcfg
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fi
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fi
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fi
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# Rename old kernel if it conflicts with new kernel name.
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if grep -q "/KERNEL_IMAGETYPE-${KERNEL_VERSION} \+root=" $grubcfg; then
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if [ -f "$D/boot/KERNEL_IMAGETYPE-${KERNEL_VERSION}" ]; then
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timestamp=`date +%s`
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kimage="$D/boot/KERNEL_IMAGETYPE-${KERNEL_VERSION}-$timestamp-back"
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sed -i "s:KERNEL_IMAGETYPE-${KERNEL_VERSION} \+root=:${kimage##*/} root=:" $grubcfg
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mv "$D/boot/KERNEL_IMAGETYPE-${KERNEL_VERSION}" "$kimage"
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fi
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fi
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fi
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'''
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postinst = '''
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get_new_grub_cfg() {
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grubcfg="$1"
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old_image="$2"
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title="Update KERNEL_IMAGETYPE-${KERNEL_VERSION}-${PV}"
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if [ "${grubcfg##*/}" = "grub.cfg" ]; then
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rootfs=`grep " *linux \+[^ ]\+ \+root=" $grubcfg -m 1 | \
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sed "s#${old_image}#${old_image%/*}/KERNEL_IMAGETYPE-${KERNEL_VERSION}#"`
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echo "menuentry \"$title\" {"
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echo " set root=(hd0,1)"
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echo "$rootfs"
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echo "}"
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elif [ "${grubcfg##*/}" = "menu.list" ]; then
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rootfs=`grep "kernel \+[^ ]\+ \+root=" $grubcfg -m 1 | \
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sed "s#${old_image}#${old_image%/*}/KERNEL_IMAGETYPE-${KERNEL_VERSION}#"`
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echo "default 0"
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echo "timeout 30"
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echo "title $title"
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echo "root (hd0,0)"
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echo "$rootfs"
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fi
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}
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get_old_grub_cfg() {
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grubcfg="$1"
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if [ "${grubcfg##*/}" = "grub.cfg" ]; then
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cat "$grubcfg"
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elif [ "${grubcfg##*/}" = "menu.list" ]; then
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sed -e '/^default/d' -e '/^timeout/d' "$grubcfg"
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fi
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}
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if [ -f "$D/boot/grub/grub.cfg" ]; then
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grubcfg="$D/boot/grub/grub.cfg"
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old_image=`grep ' *linux \+[^ ]\+ \+root=' -m 1 "$grubcfg" | awk '{print $2}'`
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elif [ -f "$D/boot/grub/menu.list" ]; then
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grubcfg="$D/boot/grub/menu.list"
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old_image=`grep '^kernel \+[^ ]\+ \+root=' -m 1 "$grubcfg" | awk '{print $2}'`
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fi
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# Don't update grubcfg at first install while old bzImage doesn't exist.
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if [ -f "$D/boot/${old_image##*/}" ]; then
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grubcfgtmp="$grubcfg.tmp"
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get_new_grub_cfg "$grubcfg" "$old_image" > $grubcfgtmp
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get_old_grub_cfg "$grubcfg" >> $grubcfgtmp
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mv $grubcfgtmp $grubcfg
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echo "Caution! Update kernel may affect kernel-module!"
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fi
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'''
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imagetypes = d.getVar('KERNEL_IMAGETYPES')
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imagetypes = re.sub(r'\.gz$', '', imagetypes)
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for type in imagetypes.split():
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typelower = type.lower()
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preinst_append = preinst.replace('KERNEL_IMAGETYPE', type)
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postinst_prepend = postinst.replace('KERNEL_IMAGETYPE', type)
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d.setVar('pkg_preinst:kernel-image-' + typelower + ':append', preinst_append)
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d.setVar('pkg_postinst:kernel-image-' + typelower + ':prepend', postinst_prepend)
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}
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