From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001

From: Javier Martinez Canillas <javierm@redhat.com>

Date: Tue, 4 Dec 2018 10:48:45 +0100

Subject: [PATCH] BLS files should only be copied by grub-switch-to-blscfg if

 BLS isn't set

Currently the grub-switch-to-blscfg script doesn't update the grub.cfg if

GRUB_ENABLE_BLSCFG=true is already set in /etc/default/grub. But it still

copies the BLS files which may overwrite fields modified by the user.

Related: rhbz#1638117

Signed-off-by: Javier Martinez Canillas <javierm@redhat.com>

---

 util/grub-switch-to-blscfg.in | 80 +++++++++++++++++++++++--------------------

 1 file changed, 42 insertions(+), 38 deletions(-)

diff --git a/util/grub-switch-to-blscfg.in b/util/grub-switch-to-blscfg.in

index d353370cc51..eeea1307706 100644

--- a/util/grub-switch-to-blscfg.in

+++ b/util/grub-switch-to-blscfg.in

@@ -220,49 +220,51 @@ EOF

     ) | cat

 }

-for kernelver in $(cd /lib/modules/ ; ls -1) "" ; do

-    bls_target="${blsdir}/${MACHINE_ID}-${kernelver}.conf"

-    linux="/vmlinuz-${kernelver}"

-    linux_path="/boot${linux}"

-    kernel_dir="/lib/modules/${kernelver}"

+copy_bls() {

+    for kernelver in $(cd /lib/modules/ ; ls -1) "" ; do

+	bls_target="${blsdir}/${MACHINE_ID}-${kernelver}.conf"

+	linux="/vmlinuz-${kernelver}"

+	linux_path="/boot${linux}"

+	kernel_dir="/lib/modules/${kernelver}"

-    if [ ! -d "${kernel_dir}" ] ; then

-        continue

-    fi

-    if [ ! -f "${linux_path}" ]; then

-        continue

-    fi

+	if [ ! -d "${kernel_dir}" ] ; then

+            continue

+	fi

+	if [ ! -f "${linux_path}" ]; then

+            continue

+	fi

-    linux_relpath="$("${grub_mkrelpath}" "${linux_path}")"

-    bootprefix="${linux_relpath%%"${linux}"}"

+	linux_relpath="$("${grub_mkrelpath}" "${linux_path}")"

+	bootprefix="${linux_relpath%%"${linux}"}"

-    if [ -f "${kernel_dir}/bls.conf" ] ; then

-        cp -af "${kernel_dir}/bls.conf" "${bls_target}"

-        if [ -n "${bootprefix}" ]; then

-            sed -i -e "s,^\(linux[^ \t]*[ \t]\+\).*,\1${bootprefix}${linux},g" "${bls_target}"

-            sed -i -e "/^initrd/ s,\([ \t]\+\)\([^ \t]\+\),\1${bootprefix}\2,g" "${bls_target}"

-        fi

-    else

-        mkbls "${kernelver}" \

-            "$(date -u +%Y%m%d%H%M%S -d "$(stat -c '%y' "${kernel_dir}")")" \

-            "${bootprefix}" \

-            >"${bls_target}"

-    fi

+	if [ -f "${kernel_dir}/bls.conf" ] ; then

+            cp -af "${kernel_dir}/bls.conf" "${bls_target}"

+            if [ -n "${bootprefix}" ]; then

+		sed -i -e "s,^\(linux[^ \t]*[ \t]\+\).*,\1${bootprefix}${linux},g" "${bls_target}"

+		sed -i -e "/^initrd/ s,\([ \t]\+\)\([^ \t]\+\),\1${bootprefix}\2,g" "${bls_target}"

+            fi

+	else

+            mkbls "${kernelver}" \

+		  "$(date -u +%Y%m%d%H%M%S -d "$(stat -c '%y' "${kernel_dir}")")" \

+		  "${bootprefix}" \

+		  >"${bls_target}"

+	fi

-    if [ "x$GRUB_LINUX_MAKE_DEBUG" = "xtrue" ]; then

-        bls_debug="$(echo ${bls_target} | sed -e "s/${kernelver}/${kernelver}~debug/")"

-        cp -aT  "${bls_target}" "${bls_debug}"

-        title="$(grep '^title[ \t]' "${bls_debug}" | sed -e 's/^title[ \t]*//')"

-        blsid="$(grep '^id[ \t]' "${bls_debug}" | sed -e "s/\.${ARCH}/-debug.${arch}/")"

-        sed -i -e "s/^title.*/title ${title}${GRUB_LINUX_DEBUG_TITLE_POSTFIX}/" "${bls_debug}"

-        sed -i -e "s/^id.*/${blsid}/" "${bls_debug}"

-        sed -i -e "s/^options.*/options \$kernelopts ${GRUB_CMDLINE_LINUX_DEBUG}/" "${bls_debug}"

-    fi

-done

+	if [ "x$GRUB_LINUX_MAKE_DEBUG" = "xtrue" ]; then

+            bls_debug="$(echo ${bls_target} | sed -e "s/${kernelver}/${kernelver}~debug/")"

+            cp -aT  "${bls_target}" "${bls_debug}"

+            title="$(grep '^title[ \t]' "${bls_debug}" | sed -e 's/^title[ \t]*//')"

+            blsid="$(grep '^id[ \t]' "${bls_debug}" | sed -e "s/\.${ARCH}/-debug.${arch}/")"

+            sed -i -e "s/^title.*/title ${title}${GRUB_LINUX_DEBUG_TITLE_POSTFIX}/" "${bls_debug}"

+            sed -i -e "s/^id.*/${blsid}/" "${bls_debug}"

+            sed -i -e "s/^options.*/options \$kernelopts ${GRUB_CMDLINE_LINUX_DEBUG}/" "${bls_debug}"

+	fi

+    done

-if [ -f "/boot/vmlinuz-0-rescue-${MACHINE_ID}" ]; then

-    mkbls "0-rescue-${MACHINE_ID}" "0" "${bootprefix}" >"${blsdir}/${MACHINE_ID}-0-rescue.conf"

-fi

+    if [ -f "/boot/vmlinuz-0-rescue-${MACHINE_ID}" ]; then

+	mkbls "0-rescue-${MACHINE_ID}" "0" "${bootprefix}" >"${blsdir}/${MACHINE_ID}-0-rescue.conf"

+    fi

+}

 GENERATE=0

 if grep '^GRUB_ENABLE_BLSCFG=.*' "${etcdefaultgrub}" \

@@ -283,6 +285,8 @@ elif ! grep -q '^GRUB_ENABLE_BLSCFG=.*' "${etcdefaultgrub}" ; then

 fi

 if [ "${GENERATE}" -eq 1 ] ; then

+    copy_bls

+

     if [ $arch = "x86_64" ] && [ ! -d /sys/firmware/efi ]; then

 	if ! cp ${prefix}/lib/grub//i386-pc/blscfg.mod ${grubdir}/i386-pc/ ; then

 	    exit 1