20-grub-install: Replace, rather than overwrite, the existing kernel.

In rhbz#1638405, we worked around the issue of an existing initramfs
being in the way by removing it if it's older than the kernel we're in
the process of installing.

But it was buggy and only worked with some filesystem layouts and paths, and
also possibly had some issues with file creation times causing the shell -ot
comparison to fail in some cases.

This patch changes it to remove the existing kernel (as well as other
related files) in the case that it's going to do the copy, and also fixes the
path issues.

Resolves: rhbz#1642402
Related: rhbz#1638405

Signed-off-by: Peter Jones <pjones@redhat.com>
Tested-by: Prarit Bhargava <prarit@redhat.com>
This commit is contained in:
Peter Jones 2018-10-24 12:51:55 -04:00 committed by Javier Martinez Canillas
parent f6d4ab8f83
commit c9b8b10a61
No known key found for this signature in database
GPG Key ID: C751E590D63F3D69

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@ -62,6 +62,7 @@ case "$COMMAND" in
"$KERNEL_DIR"/dtb
do
[[ -e "$i" ]] || continue
rm -f "/boot/${i##*/}-${KERNEL_VERSION}"
cp -aT "$i" "/boot/${i##*/}-${KERNEL_VERSION}"
command -v restorecon &>/dev/null && \
restorecon -R "/boot/${i##*/}-${KERNEL_VERSION}"
@ -69,6 +70,7 @@ case "$COMMAND" in
# hmac is .vmlinuz-<version>.hmac so needs a special treatment
i="$KERNEL_DIR/.${KERNEL_IMAGE##*/}.hmac"
if [[ -e "$i" ]]; then
rm -f "/boot/.${KERNEL_IMAGE##*/}-${KERNEL_VERSION}.hmac"
cp -a "$i" "/boot/.${KERNEL_IMAGE##*/}-${KERNEL_VERSION}.hmac"
command -v restorecon &>/dev/null && \
restorecon "/boot/.${KERNEL_IMAGE##*/}-${KERNEL_VERSION}.hmac"
@ -92,6 +94,7 @@ case "$COMMAND" in
INITRD="$(grep '^initrd[ \t]' "${BLS_TARGET}" | sed -e 's,^initrd[ \t]*,,')"
LINUX_RELPATH="$(grub2-mkrelpath /boot${LINUX})"
BOOTPREFIX="$(dirname ${LINUX_RELPATH})"
ROOTPREFIX="$(dirname "/boot${LINUX}")"
if [[ $LINUX != $LINUX_RELPATH ]]; then
sed -i -e "s,^linux.*,linux ${BOOTPREFIX}${LINUX},g" "${BLS_TARGET}"
@ -124,10 +127,10 @@ case "$COMMAND" in
fi
# this probably isn't the best place to do this, but it will do for now.
if [ -e "${BOOTPREFIX}${INITRD}" -a -e "${BOOTPREFIX}${LINUX}" -a \
"${BOOTPREFIX}${INITRD}" -ot "${BOOTPREFIX}${LINUX}" -a \
if [ -e "${ROOTPREFIX}${INITRD}" -a -e "${ROOTPREFIX}${LINUX}" -a \
"${ROOTPREFIX}${INITRD}" -ot "${ROOTPREFIX}${LINUX}" -a \
-x /usr/lib/kernel/install.d/50-dracut.install ]; then
rm -f "${BOOTPREFIX}${INITRD}"
rm -f "${ROOTPREFIX}${INITRD}"
fi
exit 0
fi