From cf6c89b53dd605a19660d1e26b9e072d0b2f7433 Mon Sep 17 00:00:00 2001

From: Peter Jones <pjones@redhat.com>

Date: Thu, 23 Jun 2016 11:01:39 -0400

Subject: [PATCH] Add grub-get-kernel-settings and use it in 10_linux

This patch adds grub-get-kernel-settings, which reads the system kernel

installation configuration from /etc/sysconfig/kernel, and outputs

${GRUB_...} variables suitable for evaluation by grub-mkconfig.  Those

variables are then used by 10_linux to choose whether or not to create

debug stanzas.

Resolves: rhbz#1226325

---

 .gitignore                                     |  1 +

 Makefile.util.def                              |  7 ++

 configure.ac                                   |  2 +

 util/bash-completion.d/grub-completion.bash.in | 22 +++++++

 util/grub-get-kernel-settings.3                | 20 ++++++

 util/grub-get-kernel-settings.in               | 91 ++++++++++++++++++++++++++

 util/grub-mkconfig.in                          |  3 +

 util/grub.d/10_linux.in                        | 23 +++++--

 8 files changed, 164 insertions(+), 5 deletions(-)

 create mode 100644 util/grub-get-kernel-settings.3

 create mode 100644 util/grub-get-kernel-settings.in

diff --git a/.gitignore b/.gitignore

index e49f76b..547ef0b 100644

--- a/.gitignore

+++ b/.gitignore

@@ -61,6 +61,7 @@ grub-fstest.exe

 grub_fstest_init.c

 grub_fstest_init.h

 grub_func_test

+grub-get-kernel-settings

 grub-install

 grub-install.exe

 grub-kbdcomp

diff --git a/Makefile.util.def b/Makefile.util.def

index e2821a2..3918e3b 100644

--- a/Makefile.util.def

+++ b/Makefile.util.def

@@ -705,6 +705,13 @@ script = {

 };

 script = {

+  name = grub-get-kernel-settings;

+  common = util/grub-get-kernel-settings.in;

+  mansection = 3;

+  installdir = sbin;

+};

+

+script = {

   name = grub-set-default;

   common = util/grub-set-default.in;

   mansection = 8;

diff --git a/configure.ac b/configure.ac

index 04c052d..8b10a93 100644

--- a/configure.ac

+++ b/configure.ac

@@ -58,6 +58,7 @@ grub_TRANSFORM([grub-install])

 grub_TRANSFORM([grub-mkconfig])

 grub_TRANSFORM([grub-mkfont])

 grub_TRANSFORM([grub-mkimage])

+grub_TRANSFORM([grub-get-kernel-settings])

 grub_TRANSFORM([grub-glue-efi])

 grub_TRANSFORM([grub-mklayout])

 grub_TRANSFORM([grub-mkpasswd-pbkdf2])

@@ -75,6 +76,7 @@ grub_TRANSFORM([grub-file])

 grub_TRANSFORM([grub-bios-setup.3])

 grub_TRANSFORM([grub-editenv.1])

 grub_TRANSFORM([grub-fstest.3])

+grub_TRANSFORM([grub-get-kernel-settings.3])

 grub_TRANSFORM([grub-glue-efi.3])

 grub_TRANSFORM([grub-install.1])

 grub_TRANSFORM([grub-kbdcomp.3])

diff --git a/util/bash-completion.d/grub-completion.bash.in b/util/bash-completion.d/grub-completion.bash.in

index 44bf135..5c4acd4 100644

--- a/util/bash-completion.d/grub-completion.bash.in

+++ b/util/bash-completion.d/grub-completion.bash.in

@@ -265,6 +265,28 @@ unset __grub_sparc64_setup_program

 #

+# grub-get-kernel-settings

+#

+_grub_get_kernel_settings () {

+    local cur

+

+    COMPREPLY=()

+    cur=`_get_cword`

+

+    if [[ "$cur" == -* ]]; then

+        __grubcomp "$(__grub_get_options_from_help)"

+    else

+        # Default complete with a filename

+        _filedir

+    fi

+}

+__grub_get_kernel_settings_program="@grub_get_kernel_settings@"

+have ${__grub_get_kernel_settings_program} && \

+ complete -F _grub_get_kernel_settings -o filenames ${__grub_get_kernel_settings_program}

+unset __grub_get_kernel_settings_program

+

+

+#

 # grub-install

 #

 _grub_install () {

diff --git a/util/grub-get-kernel-settings.3 b/util/grub-get-kernel-settings.3

new file mode 100644

index 0000000..ba33330

--- /dev/null

+++ b/util/grub-get-kernel-settings.3

@@ -0,0 +1,20 @@

+.TH GRUB-GET-KERNEL-SETTINGS 3 "Thu Jun 25 2015"

+.SH NAME

+\fBgrub-get-kernel-settings\fR \(em Evaluate the system's kernel installation settings for use while making a grub configuration file.

+

+.SH SYNOPSIS

+\fBgrub-get-kernel-settings\fR [OPTION]

+

+.SH DESCRIPTION

+\fBgrub-get-kernel-settings\fR reads the kernel installation settings on the host system, and emits a set of grub settings suitable for use when creating a grub configuration file.

+

+.SH OPTIONS

+.TP

+-h, --help

+Display program usage and exit.

+.TP

+-v, --version

+Display the current version.

+

+.SH SEE ALSO

+.BR "info grub"

diff --git a/util/grub-get-kernel-settings.in b/util/grub-get-kernel-settings.in

new file mode 100644

index 0000000..ae0b469

--- /dev/null

+++ b/util/grub-get-kernel-settings.in

@@ -0,0 +1,91 @@

+#!/bin/sh

+set -e

+

+# Evaluate new-kernel-pkg's configuration file.

+# Copyright (C) 2016 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="@prefix@"

+exec_prefix="@exec_prefix@"

+datarootdir="@datarootdir@"

+

+prefix="@prefix@"

+exec_prefix="@exec_prefix@"

+sbindir="@sbindir@"

+bindir="@bindir@"

+sysconfdir="@sysconfdir@"

+PACKAGE_NAME=@PACKAGE_NAME@

+PACKAGE_VERSION=@PACKAGE_VERSION@

+host_os=@host_os@

+datadir="@datadir@"

+if [ "x$pkgdatadir" = x ]; then

+    pkgdatadir="${datadir}/@PACKAGE@"

+fi

+grub_cfg=""

+

+self=`basename $0`

+

+grub_probe="${sbindir}/@grub_probe@"

+grub_file="${bindir}/@grub_file@"

+grub_editenv="${bindir}/@grub_editenv@"

+grub_script_check="${bindir}/@grub_script_check@"

+

+export TEXTDOMAIN=@PACKAGE@

+export TEXTDOMAINDIR="@localedir@"

+

+. "${pkgdatadir}/grub-mkconfig_lib"

+

+# Usage: usage

+# Print the usage.

+usage () {

+    gettext_printf "Usage: %s [OPTION]\n" "$self"

+    gettext "Evaluate new-kernel-pkg configuration"; echo

+    echo

+    print_option_help "-h, --help" "$(gettext "print this message and exit")"

+    print_option_help "-v, --version" "$(gettext "print the version information and exit")"

+    echo

+}

+

+# Check the arguments.

+while test $# -gt 0

+do

+    option=$1

+    shift

+

+    case "$option" in

+    -h | --help)

+	usage

+	exit 0 ;;

+    -v | --version)

+	echo "$self (${PACKAGE_NAME}) ${PACKAGE_VERSION}"

+	exit 0 ;;

+    -*)

+	gettext_printf "Unrecognized option \`%s'\n" "$option" 1>&2

+	usage

+	exit 1

+	;;

+    # Explicitly ignore non-option arguments, for compatibility.

+    esac

+done

+

+if test -f /etc/sysconfig/kernel ; then

+    . /etc/sysconfig/kernel

+fi

+

+if [ "$MAKEDEBUG" = "yes" ]; then

+    echo GRUB_LINUX_MAKE_DEBUG=true

+    echo GRUB_CMDLINE_LINUX_DEBUG=\"systemd.log_level=debug systemd.log_target=kmsg\"

+    echo GRUB_LINUX_DEBUG_TITLE_POSTFIX=\" with debugging\"

+fi

diff --git a/util/grub-mkconfig.in b/util/grub-mkconfig.in

index 0cfe604..aa4fdb8 100644

--- a/util/grub-mkconfig.in

+++ b/util/grub-mkconfig.in

@@ -42,6 +42,7 @@ grub_probe="${sbindir}/@grub_probe@"

 grub_file="${bindir}/@grub_file@"

 grub_editenv="${bindir}/@grub_editenv@"

 grub_script_check="${bindir}/@grub_script_check@"

+grub_get_kernel_settings="${sbindir}/@grub_get_kernel_settings@"

 export TEXTDOMAIN=@PACKAGE@

 export TEXTDOMAINDIR="@localedir@"

@@ -148,6 +149,8 @@ if test -f ${sysconfdir}/default/grub ; then

   . ${sysconfdir}/default/grub

 fi

+eval `${grub_get_kernel_settings}` || true

+

 if [ "x$GRUB_DISABLE_UUID" != "xtrue" -a -z "$GRUB_DEVICE_UUID" ]; then

   GRUB_DEVICE_UUID="$GRUB_DEVICE_UUID_GENERATED"

 fi

diff --git a/util/grub.d/10_linux.in b/util/grub.d/10_linux.in

index b3c460c..0d0086d 100644

--- a/util/grub.d/10_linux.in

+++ b/util/grub.d/10_linux.in

@@ -99,7 +99,8 @@ linux_entry ()

   os="$1"

   version="$2"

   type="$3"

-  args="$4"

+  isdebug="$4"

+  args="$5"

   sixteenbit=""

   linuxefi="linux"

@@ -130,6 +131,9 @@ linux_entry ()

   else

       echo "menuentry '$(echo "$os" | grub_quote)' ${CLASS} \$menuentry_id_option 'gnulinux-simple-$boot_device_id' {" | sed "s/^/$submenu_indentation/"

   fi      

+  if [ x$isdebug = xdebug ]; then

+      title="$title${GRUB_LINUX_DEBUG_TITLE_POSTFIX}"

+  fi

   if [ x$type != xrecovery ] ; then

       save_default_entry | grub_add_tab

   fi

@@ -281,11 +285,15 @@ while [ "x$list" != "x" ] ; do

   fi

   if [ "x$is_top_level" = xtrue ] && [ "x${GRUB_DISABLE_SUBMENU}" != xtrue ]; then

-    linux_entry "${OS}" "${version}" simple \

+    linux_entry "${OS}" "${version}" simple standard \

     "${GRUB_CMDLINE_LINUX} ${GRUB_CMDLINE_LINUX_DEFAULT}"

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

+      linux_entry "${OS}" "${version}" simple debug \

+        "${GRUB_CMDLINE_LINUX} ${GRUB_CMDLINE_LINUX_DEFAULT} ${GRUB_CMDLINE_LINUX_DEBUG}"

+    fi

     submenu_indentation="$grub_tab"

-    

+

     if [ -z "$boot_device_id" ]; then

 	boot_device_id="$(grub_get_device_id "${GRUB_DEVICE}")"

     fi

@@ -294,10 +302,15 @@ while [ "x$list" != "x" ] ; do

     is_top_level=false

   fi

-  linux_entry "${OS}" "${version}" advanced \

+  linux_entry "${OS}" "${version}" advanced standard \

               "${GRUB_CMDLINE_LINUX} ${GRUB_CMDLINE_LINUX_DEFAULT}"

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

+    linux_entry "${OS}" "${version}" advanced debug \

+                "${GRUB_CMDLINE_LINUX} ${GRUB_CMDLINE_LINUX_DEFAULT} ${GRUB_CMDLINE_LINUX_DEBUG}"

+  fi

+

   if [ "x${GRUB_DISABLE_RECOVERY}" != "xtrue" ]; then

-    linux_entry "${OS}" "${version}" recovery \

+    linux_entry "${OS}" "${version}" recovery standard \

                 "single ${GRUB_CMDLINE_LINUX}"

   fi

-- 

2.7.4