From 8cf8b269718c39276a55d9ba7b455156b38118fd Mon Sep 17 00:00:00 2001
From: Javier Martinez Canillas <javierm@redhat.com>
Date: Wed, 11 Apr 2018 11:49:24 +0200
Subject: [PATCH] Make grub2-switch-to-blscfg to generate debug BLS when
 MAKEDEBUG is set

If MAKEDEBUG=yes in /etc/sysconfig/kernel, then a debug menu entry should
be created. So for BLS, a debug configuration file has to be created that
contains additional debug kernel command line parameters.

Signed-off-by: Javier Martinez Canillas <javierm@redhat.com>
---
 util/grub-switch-to-blscfg.in | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/util/grub-switch-to-blscfg.in b/util/grub-switch-to-blscfg.in
index eae3c379e4a..c59299ffa6a 100644
--- a/util/grub-switch-to-blscfg.in
+++ b/util/grub-switch-to-blscfg.in
@@ -21,6 +21,7 @@
 # Initialize some variables.
 prefix=@prefix@
 exec_prefix=@exec_prefix@
+sbindir=@sbindir@
 bindir=@bindir@
 sysconfdir="@sysconfdir@"
 PACKAGE_NAME=@PACKAGE_NAME@
@@ -33,9 +34,12 @@ fi
 
 self=`basename $0`
 
+grub_get_kernel_settings="${sbindir}/@grub_get_kernel_settings@"
 grub_editenv=${bindir}/@grub_editenv@
 etcdefaultgrub=/etc/default/grub
 
+eval "$("${grub_get_kernel_settings}")" || true
+
 EFIDIR=$(grep ^ID= /etc/os-release | sed -e 's/^ID=//' -e 's/rhel/redhat/')
 if [ -d /sys/firmware/efi/efivars/ ]; then
     startlink=/etc/grub2-efi.cfg
@@ -226,6 +230,17 @@ for kernelver in $(cd /lib/modules/ ; ls -1) "" ; do
             "$(date -u +%Y%m%d%H%M%S -d "$(stat -c '%y' "${kernel_dir}")")" \
             >"${bls_target}"
     fi
+
+    if [ "x$GRUB_LINUX_MAKE_DEBUG" = "xtrue" ]; then
+        arch="$(uname -m)"
+        bls_debug="$(echo ${bls_target} | sed -e "s/\.${arch}/-debug.${arch}/")"
+        cp -aT  "${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
 
 GENERATE=0