grub2/0064-grub-core-kern-ieee1275-init.c-grub_machine_get_boot.patch

From 188fddf6f99533505a0f8c7c4f8223ba19d8ef6a Mon Sep 17 00:00:00 2001
From: Paulo Flabiano Smorigo <pfsmorigo@br.ibm.com>
Date: Mon, 10 Dec 2012 16:23:16 +0100
Subject: [PATCH 064/482] 	* grub-core/kern/ieee1275/init.c
 (grub_machine_get_bootlocation): Use 	dynamic allocation for the bootpath
 buffer.

---
 ChangeLog                      |  5 +++++
 grub-core/kern/ieee1275/init.c | 21 +++++++++++++++++----
 2 files changed, 22 insertions(+), 4 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index ce822ee..8bd581e 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2012-12-10  Paulo Flabiano Smorigo <pfsmorigo@br.ibm.com>
+
+	* grub-core/kern/ieee1275/init.c (grub_machine_get_bootlocation): Use
+	dynamic allocation for the bootpath buffer.
+
 2012-12-10  Dr. Tilmann Bubeck <t.bubeck@reinform.de>
 
 	* grub-core/gfxmenu/view.c (init_terminal): Avoid making terminal
diff --git a/grub-core/kern/ieee1275/init.c b/grub-core/kern/ieee1275/init.c
index 7d03a8a..14dcdf0 100644
--- a/grub-core/kern/ieee1275/init.c
+++ b/grub-core/kern/ieee1275/init.c
@@ -82,18 +82,30 @@ void (*grub_ieee1275_net_config) (const char *dev,
 void
 grub_machine_get_bootlocation (char **device, char **path)
 {
-  char bootpath[64]; /* XXX check length */
+  char *bootpath;
+  grub_ssize_t bootpath_size;
   char *filename;
   char *type;
-   
-  if (grub_ieee1275_get_property (grub_ieee1275_chosen, "bootpath", &bootpath,
-				  sizeof (bootpath), 0))
+
+  if (grub_ieee1275_get_property_length (grub_ieee1275_chosen, "bootpath",
+					 &bootpath_size)
+      || bootpath_size <= 0)
     {
       /* Should never happen.  */
       grub_printf ("/chosen/bootpath property missing!\n");
       return;
     }
 
+  bootpath = (char *) grub_malloc ((grub_size_t) bootpath_size + 64);
+  if (! bootpath)
+    {
+      grub_print_error ();
+      return;
+    }
+  grub_ieee1275_get_property (grub_ieee1275_chosen, "bootpath", bootpath,
+                              (grub_size_t) bootpath_size + 1, 0);
+  bootpath[bootpath_size] = '\0';
+
   /* Transform an OF device path to a GRUB path.  */
 
   type = grub_ieee1275_get_device_type (bootpath);
@@ -132,6 +144,7 @@ grub_machine_get_bootlocation (char **device, char **path)
 	  *path = filename;
 	}
     }
+  grub_free (bootpath);
 }
 
 /* Claim some available memory in the first /memory node. */
-- 
1.8.2.1