From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001

From: Peter Jones <pjones@redhat.com>

Date: Mon, 8 Jul 2019 17:33:22 +0200

Subject: [PATCH] Try mac/guid/etc before grub.cfg on tftp config files.

Signed-off-by: Peter Jones <pjones@redhat.com>

---

 grub-core/normal/main.c | 97 ++++++++++++++++++++++++++-----------------------

 1 file changed, 51 insertions(+), 46 deletions(-)

diff --git a/grub-core/normal/main.c b/grub-core/normal/main.c

index d85f7598d2..1e509fceb9 100644

--- a/grub-core/normal/main.c

+++ b/grub-core/normal/main.c

@@ -347,61 +347,66 @@ 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, *fw_path;

-

-      prefix = 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, GRUB_FILE_TYPE_CONFIG);

-	      if (file)

-		{

-		  grub_file_close (file);

-		  grub_enter_normal_mode (config);

-		}

-              else

-                {

-                  /*  Ignore all errors.  */

-                  grub_errno = 0;

-                }

-	      grub_free (config);

-	    }

-	}

+      const char *prefix;

+      const char *net_search_cfg;

+      int disable_net_search = 0;

+      prefix = grub_env_get ("fw_path");

       if (! prefix)

 	      prefix = grub_env_get ("prefix");

+

+      net_search_cfg = grub_env_get ("feature_net_search_cfg");

+      if (net_search_cfg && net_search_cfg[0] == 'n')

+	      disable_net_search = 1;

+

       if (prefix)

         {

-          grub_size_t config_len;

-          int disable_net_search = 0;

-          const char *net_search_cfg;

-

-          config_len = grub_strlen (prefix) +

-                       sizeof ("/grub.cfg-XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX");

-          config = grub_malloc (config_len);

-

-          if (!config)

-            goto quit;

-

-          grub_snprintf (config, config_len, "%s/grub.cfg", prefix);

-

-          net_search_cfg = grub_env_get ("feature_net_search_cfg");

-          if (net_search_cfg && net_search_cfg[0] == 'n')

-            disable_net_search = 1;

-

           if (grub_strncmp (prefix + 1, "tftp", sizeof ("tftp") - 1) == 0 &&

               !disable_net_search)

-            grub_net_search_config_file (config);

+            {

+              grub_size_t config_len;

+              config_len = grub_strlen (prefix) +

+                sizeof ("/grub.cfg-XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX");

+              config = grub_malloc (config_len);

-	  grub_enter_normal_mode (config);

-	  grub_free (config);

-	}

+              if (! config)

+                goto quit;

+

+              grub_snprintf (config, config_len, "%s/grub.cfg", prefix);

+

+              grub_net_search_configfile (config);

+

+              grub_enter_normal_mode (config);

+              grub_free (config);

+              config = NULL;

+            }

+

+          if (!config)

+            {

+              config = grub_xasprintf ("%s/grub.cfg", prefix);

+              if (config)

+                {

+                  grub_file_t file;

+

+                  file = grub_file_open (config, GRUB_FILE_TYPE_CONFIG);

+                  if (file)

+                    {

+                      grub_file_close (file);

+                      grub_enter_normal_mode (config);

+                    }

+                  else

+                    {

+                      /*  Ignore all errors.  */

+                      grub_errno = 0;

+                    }

+                  grub_free (config);

+                }

+            }

+        }

       else

-	grub_enter_normal_mode (0);

+        {

+          grub_enter_normal_mode (0);

+        }

     }

   else

     grub_enter_normal_mode (argv[0]);