grub2/grub-2.00-add-fw_path-search.patch

From d829d54d0f461c7bc6a7d8bd549cfdacfac51082 Mon Sep 17 00:00:00 2001
From: Matthew Garrett <mjg@redhat.com>
Date: Mon, 21 May 2012 14:36:39 -0400
Subject: [PATCH] Add fw_path variable

---
 grub-core/kern/main.c   |   16 ++++++++++++++--
 grub-core/normal/main.c |   20 +++++++++++++++++++-
 2 files changed, 33 insertions(+), 3 deletions(-)

diff --git a/grub-core/kern/main.c b/grub-core/kern/main.c
index 185230c..26481c6 100644
--- a/grub-core/kern/main.c
+++ b/grub-core/kern/main.c
@@ -114,6 +114,20 @@ grub_set_prefix_and_root (void)
 
   grub_register_variable_hook ("root", 0, grub_env_write_root);
 
+  grub_machine_get_bootlocation (&fwdevice, &fwpath);
+
+  if (fwdevice && fwpath)
+    {
+      char *fw_path;
+
+      fw_path = grub_xasprintf ("(%s)/%s", fwdevice, fwpath);
+      if (fw_path)
+	{
+	  grub_env_set ("fw_path", fw_path);
+	  grub_free (fw_path);
+	}
+    }
+
   if (prefix)
     {
       char *pptr = NULL;
@@ -131,8 +145,6 @@ grub_set_prefix_and_root (void)
       if (pptr[0])
 	path = grub_strdup (pptr);
     }
-  if ((!device || device[0] == ',' || !device[0]) || !path)
-    grub_machine_get_bootlocation (&fwdevice, &fwpath);
 
   if (!device && fwdevice)
     device = fwdevice;
diff --git a/grub-core/normal/main.c b/grub-core/normal/main.c
index 1963fe4..64c2a9f 100644
--- a/grub-core/normal/main.c
+++ b/grub-core/normal/main.c
@@ -309,7 +309,25 @@ grub_cmd_normal (struct grub_command *cmd __attribute__ ((unused)),
       /* Guess the config filename. It is necessary to make CONFIG static,
 	 so that it won't get broken by longjmp.  */
       char *config;
-      const char *prefix;
+      const char *prefix, *fw_path;
+
+      fw_path = grub_env_get ("fw_path");
+      if (fw_path)
+	{
+	  config = grub_xasprintf ("%s/grub.cfg", fw_path);
+	  if (config)
+	    {
+	      grub_file_t file;
+
+	      file = grub_file_open (config);
+	      if (file)
+		{
+		  grub_file_close (file);
+		  grub_enter_normal_mode (config);
+		}
+	      grub_free (config);
+	    }
+	}
 
       prefix = grub_env_get ("prefix");
       if (prefix)
-- 
1.7.10.2