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From fbc6f5faf45f489125f98a11f3593cd43b4d6b76 Mon Sep 17 00:00:00 2001
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From: Colin Watson <cjwatson@ubuntu.com>
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Date: Wed, 19 Sep 2012 02:44:54 +0100
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Subject: [PATCH 044/482] * grub-core/partmap/msdos.c (pc_partition_map_embed):
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Revert incorrect off-by-one fix from 2011-02-12. A 62-sector core image
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should fit before end == 63.
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---
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ChangeLog | 6 ++++++
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grub-core/partmap/msdos.c | 4 ++--
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2 files changed, 8 insertions(+), 2 deletions(-)
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diff --git a/ChangeLog b/ChangeLog
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index 1ab401d..5db804e 100644
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--- a/ChangeLog
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+++ b/ChangeLog
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@@ -1,5 +1,11 @@
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2012-09-19 Colin Watson <cjwatson@ubuntu.com>
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+ * grub-core/partmap/msdos.c (pc_partition_map_embed): Revert
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+ incorrect off-by-one fix from 2011-02-12. A 62-sector core image
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+ should fit before end == 63.
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+
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+2012-09-19 Colin Watson <cjwatson@ubuntu.com>
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+
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* util/grub-setup.c (write_rootdev): Remove unused core_img
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parameter. Update all callers.
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(setup): Define core_sectors only if GRUB_SETUP_BIOS, to appease
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diff --git a/grub-core/partmap/msdos.c b/grub-core/partmap/msdos.c
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index 6e54a74..10ca3f0 100644
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--- a/grub-core/partmap/msdos.c
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+++ b/grub-core/partmap/msdos.c
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@@ -316,14 +316,14 @@ pc_partition_map_embed (struct grub_disk *disk, unsigned int *nsectors,
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break;
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}
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- if (end >= *nsectors + 2)
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+ if (end >= *nsectors + 1)
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{
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unsigned i, j;
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char *embed_signature_check;
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unsigned int orig_nsectors, avail_nsectors;
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orig_nsectors = *nsectors;
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- *nsectors = end - 2;
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+ *nsectors = end - 1;
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avail_nsectors = *nsectors;
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if (*nsectors > max_nsectors)
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*nsectors = max_nsectors;
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--
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1.8.2.1
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