0032-gpt-check-header-and-entries-status-bits-together.patch

From ac788c40bb54691731a317217c9d5a7e241888ca Mon Sep 17 00:00:00 2001
From: Michael Marineau <michael.marineau@coreos.com>
Date: Wed, 21 Sep 2016 13:44:11 -0700
Subject: [PATCH] gpt: check header and entries status bits together

Use the new status function which checks *_HEADER_VALID and
*_ENTRIES_VALID bits together. It doesn't make sense for the header and
entries bits to mismatch so don't allow for it.
---
 grub-core/lib/gpt.c | 14 +++++---------
 1 file changed, 5 insertions(+), 9 deletions(-)

diff --git a/grub-core/lib/gpt.c b/grub-core/lib/gpt.c
index 9bb1967..3c6ff35 100644
--- a/grub-core/lib/gpt.c
+++ b/grub-core/lib/gpt.c
@@ -596,24 +596,20 @@ grub_gpt_repair (grub_disk_t disk, grub_gpt_t gpt)
     return grub_error (GRUB_ERR_NOT_IMPLEMENTED_YET,
 		       "GPT sector size must match disk sector size");
 
-  if (!(gpt->status & GRUB_GPT_PRIMARY_ENTRIES_VALID ||
-	gpt->status & GRUB_GPT_BACKUP_ENTRIES_VALID))
-    return grub_error (GRUB_ERR_BUG, "No valid GPT entries");
-
-  if (gpt->status & GRUB_GPT_PRIMARY_HEADER_VALID)
+  if (grub_gpt_primary_valid (gpt))
     {
-      grub_dprintf ("gpt", "primary GPT header is valid\n");
+      grub_dprintf ("gpt", "primary GPT is valid\n");
       backup_header = grub_le_to_cpu64 (gpt->primary.alternate_lba);
       grub_memcpy (&gpt->backup, &gpt->primary, sizeof (gpt->backup));
     }
-  else if (gpt->status & GRUB_GPT_BACKUP_HEADER_VALID)
+  else if (grub_gpt_backup_valid (gpt))
     {
-      grub_dprintf ("gpt", "backup GPT header is valid\n");
+      grub_dprintf ("gpt", "backup GPT is valid\n");
       backup_header = grub_le_to_cpu64 (gpt->backup.header_lba);
       grub_memcpy (&gpt->primary, &gpt->backup, sizeof (gpt->primary));
     }
   else
-    return grub_error (GRUB_ERR_BUG, "No valid GPT header");
+    return grub_error (GRUB_ERR_BUG, "No valid GPT");
 
   /* Relocate backup to end if disk whenever possible.  */
   if (grub_gpt_disk_size_valid(disk))
-- 
2.21.3