* grub-core/fs/i386/pc/pxe.c (set_mac_env): Export variable.

(set_env_limn_ro): Likewise.
	(GRUB_MOD_INIT): Likewise.
	* grub-core/hook/datehook.c (GRUB_MOD_INIT): Likewise. Change to
	ARRAY_SIZE while on it.
	(GRUB_MOD_FINI): Change to ARRAY_SIZE.
	* grub-core/normal/context.c (grub_env_export): Move from here ...
	* grub-core/kern/env.c (grub_env_export): ... here.
	* grub-core/normal/context.c (grub_cmd_export): Skip exporting root and
	prefix.
	* grub-core/kern/main.c (grub_main): Export root and prefix.
	* include/grub/env.h (grub_env_export): Export.
	Reported by: Seth Goldberg.

ChangeLog

@@ -1,3 +1,19 @@
+2011-01-11  Vladimir Serbinenko  <phcoder@gmail.com>
+
+	* grub-core/fs/i386/pc/pxe.c (set_mac_env): Export variable.
+	(set_env_limn_ro): Likewise.
+	(GRUB_MOD_INIT): Likewise.
+	* grub-core/hook/datehook.c (GRUB_MOD_INIT): Likewise. Change to
+	ARRAY_SIZE while on it.
+	(GRUB_MOD_FINI): Change to ARRAY_SIZE.
+	* grub-core/normal/context.c (grub_env_export): Move from here ...
+	* grub-core/kern/env.c (grub_env_export): ... here.
+	* grub-core/normal/context.c (grub_cmd_export): Skip exporting root and
+	prefix.
+	* grub-core/kern/main.c (grub_main): Export root and prefix.
+	* include/grub/env.h (grub_env_export): Export.
+	Reported by: Seth Goldberg.
+
 2011-01-11  Vladimir Serbinenko  <phcoder@gmail.com>
 
 	* grub-core/loader/i386/multiboot_mbi.c (grub_multiboot_make_mbi):

grub-core/fs/i386/pc/pxe.c

@@ -420,6 +420,7 @@ set_mac_env (grub_uint8_t *mac_addr, grub_size_t mac_len)
   grub_env_set ("net_pxe_mac", buf);
   /* XXX: Is it possible to change MAC in PXE?  */
   grub_register_variable_hook ("net_pxe_mac", 0, grub_env_write_readonly);
+  grub_env_export ("net_pxe_mac");
 }
 
 static void
@@ -431,6 +432,7 @@ set_env_limn_ro (const char *varname, char *value, grub_size_t len)
   grub_env_set (varname, value);
   value[len] = c;
   grub_register_variable_hook (varname, 0, grub_env_write_readonly);
+  grub_env_export (varname);
 }
 
 static void
@@ -625,11 +627,18 @@ GRUB_MOD_INIT(pxe)
       grub_register_variable_hook ("pxe_default_gateway", 0,
 				   grub_env_write_pxe_default_gateway);
       
+
       /* XXX: Is it possible to change IP in PXE?  */
       grub_register_variable_hook ("net_pxe_ip", 0,
 				   grub_env_write_readonly);
       grub_register_variable_hook ("pxe_blksize", 0,
 				   grub_env_write_pxe_blocksize);
+
+      grub_env_export ("pxe_default_server");
+      grub_env_export ("pxe_default_gateway");
+      grub_env_export ("net_pxe_ip");
+      grub_env_export ("pxe_blksize");
+
       grub_disk_dev_register (&grub_pxe_dev);
       grub_fs_register (&grub_pxefs_fs);
     }

grub-core/hook/datehook.c

@@ -86,18 +86,21 @@ grub_read_hook_datetime (struct grub_env_var *var,
 
 GRUB_MOD_INIT(datehook)
 {
-  int i;
+  unsigned i;
 
-  for (i = 0; i < 7; i++)
+  for (i = 0; i < ARRAY_SIZE (grub_datetime_names); i++)
+    {
       grub_register_variable_hook (grub_datetime_names[i],
 				   grub_read_hook_datetime, 0);
+      grub_env_export (grub_datetime_names[i]);
+    }
 }
 
 GRUB_MOD_FINI(datehook)
 {
-  int i;
+  unsigned i;
 
-  for (i = 0; i < 7; i++)
+  for (i = 0; i < ARRAY_SIZE (grub_datetime_names); i++)
     {
       grub_register_variable_hook (grub_datetime_names[i], 0, 0);
       grub_env_unset (grub_datetime_names[i]);

grub-core/kern/env.c

@@ -240,3 +240,23 @@ grub_register_variable_hook (const char *name,
 
   return GRUB_ERR_NONE;
 }
+
+grub_err_t
+grub_env_export (const char *name)
+{
+  struct grub_env_var *var;
+
+  var = grub_env_find (name);
+  if (! var)
+    {
+      grub_err_t err;
+      
+      err = grub_env_set (name, "");
+      if (err)
+	return err;
+      var = grub_env_find (name);
+    }    
+  var->global = 1;
+
+  return GRUB_ERR_NONE;
+}

grub-core/kern/main.c

@@ -189,6 +189,8 @@ grub_main (void)
      for convenience.  */
   grub_machine_set_prefix ();
   grub_set_root_dev ();
+  grub_env_export ("root");
+  grub_env_export ("prefix");
 
   grub_register_core_commands ();
 

grub-core/normal/context.c

@@ -175,26 +175,6 @@ grub_env_extractor_close (int source)
   return err;
 }
 
-grub_err_t
-grub_env_export (const char *name)
-{
-  struct grub_env_var *var;
-
-  var = grub_env_find (name);
-  if (! var)
-    {
-      grub_err_t err;
-      
-      err = grub_env_set (name, "");
-      if (err)
-	return err;
-      var = grub_env_find (name);
-    }    
-  var->global = 1;
-
-  return GRUB_ERR_NONE;
-}
-
 static grub_command_t export_cmd;
 
 static grub_err_t
@@ -216,9 +196,6 @@ grub_cmd_export (struct grub_command *cmd __attribute__ ((unused)),
 void
 grub_context_init (void)
 {
-  grub_env_export ("root");
-  grub_env_export ("prefix");
-
   export_cmd = grub_register_command ("export", grub_cmd_export,
 				      N_("ENVVAR [ENVVAR] ..."),
 				      N_("Export variables."));

include/grub/env.h

@@ -53,7 +53,7 @@ grub_err_t EXPORT_FUNC(grub_register_variable_hook) (const char *name,
 
 grub_err_t grub_env_context_open (void);
 grub_err_t grub_env_context_close (void);
-grub_err_t grub_env_export (const char *name);
+grub_err_t EXPORT_FUNC(grub_env_export) (const char *name);
 
 void grub_env_unset_menu (void);
 grub_menu_t grub_env_get_menu (void);