File grub2-iterate-and-hook-for-extended-partition.patch of Package grub2
From: Michael Chang <mchang@suse.com>
The same as in the previous patch, add a support for installing grub
into an extended partition.
Here, we do not ignore extended partitions anymore. Instead we call a
hook that makes sure we have the partition when installing.
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
References: https://bugzilla.novell.com/show_bug.cgi?id=750897
From: Andrey Borzenkov <arvidjaar@gmail.com>
Apply this logic only to primary extended partition. Ignore extended
partitions that are used to link together logical partitions.
References: https://bugzilla.novell.com/show_bug.cgi?id=785341
---
Index: grub-2.00/grub-core/partmap/msdos.c
===================================================================
--- grub-2.00.orig/grub-core/partmap/msdos.c
+++ grub-2.00/grub-core/partmap/msdos.c
@@ -188,13 +188,20 @@ grub_partition_msdos_iterate (grub_disk_
(unsigned long long) p.len);
/* If this partition is a normal one, call the hook. */
- if (! grub_msdos_partition_is_empty (e->type)
- && ! grub_msdos_partition_is_extended (e->type))
+ if (! grub_msdos_partition_is_empty (e->type))
{
- p.number++;
+ if (!grub_msdos_partition_is_extended (e->type) || p.number < 3)
+ {
+ p.number++;
- if (hook (disk, &p, hook_data))
- return grub_errno;
+ /* prevent someone doing mkfs or mkswap on an
+ extended partition, but leave room for LILO */
+ if (grub_msdos_partition_is_extended (e->type))
+ p.len = 2;
+
+ if (hook (disk, &p, hook_data))
+ return grub_errno;
+ }
}
else if (p.number < 3)
/* If this partition is a logical one, shouldn't increase the