ktest: introduce grub2bls REBOOT_TYPE option

Fedora 30 introduces Boot Loader Specification (BLS),
it changes around grub entry configuration.

kernel entries aren't in grub.cfg. We can get the entries
by "grubby --info=ALL" command.

Introduce grub2bls as REBOOT_TYPE option for BLS.

Link: http://lkml.kernel.org/r/20190509213647.6276-4-msys.mizuma@gmail.com

Signed-off-by: Masayoshi Mizuma <m.mizuma@jp.fujitsu.com>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>

tools/testing/ktest/ktest.pl

@@ -64,6 +64,7 @@ my %default = (
     "STOP_TEST_AFTER"		=> 600,
     "MAX_MONITOR_WAIT"		=> 1800,
     "GRUB_REBOOT"		=> "grub2-reboot",
+    "GRUB_BLS_GET"		=> "grubby --info=ALL",
     "SYSLINUX"			=> "extlinux",
     "SYSLINUX_PATH"		=> "/boot/extlinux",
     "CONNECT_TIMEOUT"		=> 25,
@@ -125,6 +126,7 @@ my $last_grub_menu;
 my $grub_file;
 my $grub_number;
 my $grub_reboot;
+my $grub_bls_get;
 my $syslinux;
 my $syslinux_path;
 my $syslinux_label;
@@ -295,6 +297,7 @@ my %option_map = (
     "GRUB_MENU"			=> \$grub_menu,
     "GRUB_FILE"			=> \$grub_file,
     "GRUB_REBOOT"		=> \$grub_reboot,
+    "GRUB_BLS_GET"		=> \$grub_bls_get,
     "SYSLINUX"			=> \$syslinux,
     "SYSLINUX_PATH"		=> \$syslinux_path,
     "SYSLINUX_LABEL"		=> \$syslinux_label,
@@ -440,7 +443,7 @@ EOF
     ;
 $config_help{"REBOOT_TYPE"} = << "EOF"
  Way to reboot the box to the test kernel.
- Only valid options so far are "grub", "grub2", "syslinux", and "script".
+ Only valid options so far are "grub", "grub2", "grub2bls", "syslinux", and "script".
 
  If you specify grub, it will assume grub version 1
  and will search in /boot/grub/menu.lst for the title \$GRUB_MENU
@@ -454,6 +457,8 @@ $config_help{"REBOOT_TYPE"} = << "EOF"
  If you specify grub2, then you also need to specify both \$GRUB_MENU
  and \$GRUB_FILE.
 
+ If you specify grub2bls, then you also need to specify \$GRUB_MENU.
+
  If you specify syslinux, then you may use SYSLINUX to define the syslinux
  command (defaults to extlinux), and SYSLINUX_PATH to specify the path to
  the syslinux install (defaults to /boot/extlinux). But you have to specify
@@ -479,6 +484,9 @@ $config_help{"GRUB_MENU"} = << "EOF"
  menu must be a non-nested menu. Add the quotes used in the menu
  to guarantee your selection, as the first menuentry with the content
  of \$GRUB_MENU that is found will be used.
+
+ For grub2bls, \$GRUB_MENU is searched on the result of \$GRUB_BLS_GET
+ command for the lines that begin with "title".
 EOF
     ;
 $config_help{"GRUB_FILE"} = << "EOF"
@@ -695,7 +703,7 @@ sub get_mandatory_configs {
 	}
     }
 
-    if ($rtype eq "grub") {
+    if (($rtype eq "grub") or ($rtype eq "grub2bls")) {
 	get_mandatory_config("GRUB_MENU");
     }
 
@@ -1965,6 +1973,10 @@ sub get_grub_index {
 	$command = "cat $grub_file";
 	$target = '^menuentry.*' . $grub_menu_qt;
 	$skip = '^menuentry\s|^submenu\s';
+    } elsif ($reboot_type eq "grub2bls") {
+        $command = $grub_bls_get;
+        $target = '^title=.*' . $grub_menu_qt;
+        $skip = '^title=';
     } else {
 	return;
     }
@@ -4324,7 +4336,7 @@ for (my $i = 1; $i <= $opt{"NUM_TESTS"}; $i++) {
 
     if (!$buildonly) {
 	$target = "$ssh_user\@$machine";
-	if ($reboot_type eq "grub") {
+	if (($reboot_type eq "grub") or ($reboot_type eq "grub2bls")) {
 	    dodie "GRUB_MENU not defined" if (!defined($grub_menu));
 	} elsif ($reboot_type eq "grub2") {
 	    dodie "GRUB_MENU not defined" if (!defined($grub_menu));