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File 0044-squash-kern-Add-lockdown-support.patch of Package grub2

From 3c612287086a5f590f80d874e8c5c6042bf7f6a0 Mon Sep 17 00:00:00 2001
From: Michael Chang <mchang@suse.com>
Date: Wed, 24 Feb 2021 23:51:38 +0800
Subject: [PATCH 44/46] squash! kern: Add lockdown support

Since the lockdown feature is efi specific, the
grub_{command,extcmd}_lockdown functions can be removed from other
platform for not taking up space in kernel image.
---
 grub-core/commands/extcmd.c |  2 ++
 grub-core/kern/command.c    |  2 ++
 include/grub/command.h      | 11 +++++++++++
 include/grub/extcmd.h       | 13 +++++++++++++
 4 files changed, 28 insertions(+)

diff --git a/grub-core/commands/extcmd.c b/grub-core/commands/extcmd.c
index 90a5ca24a..4ac111a99 100644
--- a/grub-core/commands/extcmd.c
+++ b/grub-core/commands/extcmd.c
@@ -111,6 +111,7 @@ grub_register_extcmd (const char *name, grub_extcmd_func_t func,
 				    summary, description, parser, 1);
 }
 
+#ifdef GRUB_MACHINE_EFI
 static grub_err_t
 grub_extcmd_lockdown (grub_extcmd_context_t ctxt __attribute__ ((unused)),
                       int argc __attribute__ ((unused)),
@@ -132,6 +133,7 @@ grub_register_extcmd_lockdown (const char *name, grub_extcmd_func_t func,
 
   return grub_register_extcmd (name, func, flags, summary, description, parser);
 }
+#endif
 
 void
 grub_unregister_extcmd (grub_extcmd_t ext)
diff --git a/grub-core/kern/command.c b/grub-core/kern/command.c
index 4aabcd4b5..17363af7b 100644
--- a/grub-core/kern/command.c
+++ b/grub-core/kern/command.c
@@ -78,6 +78,7 @@ grub_register_command_prio (const char *name,
   return cmd;
 }
 
+#ifdef GRUB_MACHINE_EFI
 static grub_err_t
 grub_cmd_lockdown (grub_command_t cmd __attribute__ ((unused)),
                    int argc __attribute__ ((unused)),
@@ -100,6 +101,7 @@ grub_register_command_lockdown (const char *name,
 
   return grub_register_command_prio (name, func, summary, description, 0);
 }
+#endif
 
 void
 grub_unregister_command (grub_command_t cmd)
diff --git a/include/grub/command.h b/include/grub/command.h
index 2a6f7f846..b518e262e 100644
--- a/include/grub/command.h
+++ b/include/grub/command.h
@@ -86,11 +86,22 @@ EXPORT_FUNC(grub_register_command_prio) (const char *name,
 					 const char *summary,
 					 const char *description,
 					 int prio);
+#ifdef GRUB_MACHINE_EFI
 grub_command_t
 EXPORT_FUNC(grub_register_command_lockdown) (const char *name,
                                              grub_command_func_t func,
                                              const char *summary,
                                              const char *description);
+#else
+static inline grub_command_t
+grub_register_command_lockdown (const char *name,
+                                grub_command_func_t func,
+                                const char *summary,
+                                const char *description)
+{
+  return grub_register_command_prio (name, func, summary, description, 0);
+}
+#endif
 void EXPORT_FUNC(grub_unregister_command) (grub_command_t cmd);
 
 static inline grub_command_t
diff --git a/include/grub/extcmd.h b/include/grub/extcmd.h
index fe9248b8b..fa1328ea5 100644
--- a/include/grub/extcmd.h
+++ b/include/grub/extcmd.h
@@ -62,12 +62,25 @@ grub_extcmd_t EXPORT_FUNC(grub_register_extcmd) (const char *name,
 						 const char *description,
 						 const struct grub_arg_option *parser);
 
+#ifdef GRUB_MACHINE_EFI
 grub_extcmd_t EXPORT_FUNC(grub_register_extcmd_lockdown) (const char *name,
                                                           grub_extcmd_func_t func,
                                                           grub_command_flags_t flags,
                                                           const char *summary,
                                                           const char *description,
                                                           const struct grub_arg_option *parser);
+#else
+static inline grub_extcmd_t
+grub_register_extcmd_lockdown (const char *name,
+                               grub_extcmd_func_t func,
+                               grub_command_flags_t flags,
+                               const char *summary,
+                               const char *description,
+                               const struct grub_arg_option *parser)
+{
+  return grub_register_extcmd (name, func, flags, summary, description, parser);
+}
+#endif
 
 grub_extcmd_t EXPORT_FUNC(grub_register_extcmd_prio) (const char *name,
 						      grub_extcmd_func_t func,
-- 
2.26.2
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