mirror of
https://src.fedoraproject.org/rpms/grub2.git
synced 2024-11-28 15:46:53 +00:00
116 lines
3.5 KiB
Diff
116 lines
3.5 KiB
Diff
From 6faaef8e1cb03785b2baea19e8ada1fd23382e68 Mon Sep 17 00:00:00 2001
|
||
From: Vladimir 'phcoder' Serbinenko <phcoder@gmail.com>
|
||
Date: Tue, 30 Apr 2013 17:34:29 +0200
|
||
Subject: [PATCH 396/482] * grub-core/partmap/amiga.c: Fix size of
|
||
checksummed block.
|
||
|
||
---
|
||
ChangeLog | 4 ++++
|
||
grub-core/partmap/amiga.c | 25 +++++++++++++++++--------
|
||
2 files changed, 21 insertions(+), 8 deletions(-)
|
||
|
||
diff --git a/ChangeLog b/ChangeLog
|
||
index 0485a01..b0ae4ee 100644
|
||
--- a/ChangeLog
|
||
+++ b/ChangeLog
|
||
@@ -1,3 +1,7 @@
|
||
+2013-04-30 Vladimir Serbinenko <phcoder@gmail.com>
|
||
+
|
||
+ * grub-core/partmap/amiga.c: Fix size of checksummed block.
|
||
+
|
||
2013-04-29 Vladimir Serbinenko <phcoder@gmail.com>
|
||
|
||
* configure.ac: Use -mcmodel=large on x86_64-emu as well.
|
||
diff --git a/grub-core/partmap/amiga.c b/grub-core/partmap/amiga.c
|
||
index 213d707..97f7160 100644
|
||
--- a/grub-core/partmap/amiga.c
|
||
+++ b/grub-core/partmap/amiga.c
|
||
@@ -25,6 +25,8 @@
|
||
|
||
GRUB_MOD_LICENSE ("GPLv3+");
|
||
|
||
+#define AMIGA_CHECKSUM_WORDS 128
|
||
+
|
||
struct grub_amiga_rdsk
|
||
{
|
||
/* "RDSK". */
|
||
@@ -39,7 +41,7 @@ struct grub_amiga_rdsk
|
||
grub_uint32_t partitionlst;
|
||
grub_uint32_t fslst;
|
||
|
||
- grub_uint32_t unused[128 - 9];
|
||
+ grub_uint32_t unused[AMIGA_CHECKSUM_WORDS - 9];
|
||
} __attribute__ ((packed));
|
||
|
||
struct grub_amiga_partition
|
||
@@ -47,7 +49,7 @@ struct grub_amiga_partition
|
||
/* "PART". */
|
||
grub_uint8_t magic[4];
|
||
#define GRUB_AMIGA_PART_MAGIC "PART"
|
||
- grub_int32_t size;
|
||
+ grub_uint32_t size;
|
||
grub_int32_t checksum;
|
||
grub_uint32_t scsihost;
|
||
grub_uint32_t next;
|
||
@@ -67,7 +69,7 @@ struct grub_amiga_partition
|
||
grub_uint32_t highcyl;
|
||
|
||
grub_uint32_t firstcyl;
|
||
- grub_uint32_t unused[128 - 44];
|
||
+ grub_uint32_t unused[AMIGA_CHECKSUM_WORDS - 44];
|
||
} __attribute__ ((packed));
|
||
|
||
static struct grub_partition_map grub_amiga_partition_map;
|
||
@@ -75,13 +77,20 @@ static struct grub_partition_map grub_amiga_partition_map;
|
||
|
||
|
||
static grub_uint32_t
|
||
-amiga_partition_map_checksum (void *buf, grub_size_t sz)
|
||
+amiga_partition_map_checksum (void *buf)
|
||
{
|
||
grub_uint32_t *ptr = buf;
|
||
grub_uint32_t r = 0;
|
||
- sz /= sizeof (grub_uint32_t);
|
||
+ grub_size_t sz;
|
||
+ /* Fancy and quick way of checking sz >= 512 / 4 = 128. */
|
||
+ if (ptr[1] & ~grub_cpu_to_be32_compile_time (AMIGA_CHECKSUM_WORDS - 1))
|
||
+ sz = AMIGA_CHECKSUM_WORDS;
|
||
+ else
|
||
+ sz = grub_be_to_cpu32 (ptr[1]);
|
||
+
|
||
for (; sz; sz--, ptr++)
|
||
r += grub_be_to_cpu32 (*ptr);
|
||
+
|
||
return r;
|
||
}
|
||
|
||
@@ -105,7 +114,7 @@ amiga_partition_map_iterate (grub_disk_t disk,
|
||
|
||
if (grub_memcmp (rdsk.magic, GRUB_AMIGA_RDSK_MAGIC,
|
||
sizeof (rdsk.magic)) == 0
|
||
- && amiga_partition_map_checksum (&rdsk, sizeof (rdsk)) == 0)
|
||
+ && amiga_partition_map_checksum (&rdsk) == 0)
|
||
{
|
||
/* Found the first PART block. */
|
||
next = grub_be_to_cpu32 (rdsk.partitionlst);
|
||
@@ -128,7 +137,7 @@ amiga_partition_map_iterate (grub_disk_t disk,
|
||
|
||
if (grub_memcmp (apart.magic, GRUB_AMIGA_PART_MAGIC,
|
||
sizeof (apart.magic)) != 0
|
||
- || amiga_partition_map_checksum (&apart, sizeof (apart)) != 0)
|
||
+ || amiga_partition_map_checksum (&apart) != 0)
|
||
return grub_error (GRUB_ERR_BAD_PART_TABLE,
|
||
"invalid Amiga partition map");
|
||
/* Calculate the first block and the size of the partition. */
|
||
@@ -140,7 +149,7 @@ amiga_partition_map_iterate (grub_disk_t disk,
|
||
* grub_be_to_cpu32 (apart.heads)
|
||
* grub_be_to_cpu32 (apart.block_per_track));
|
||
|
||
- part.offset = (grub_off_t) next * 512;
|
||
+ part.offset = next;
|
||
part.number = partno;
|
||
part.index = 0;
|
||
part.partmap = &grub_amiga_partition_map;
|
||
--
|
||
1.8.2.1
|
||
|