vbatts/grub
1
0
Fork 0
Code Issues Pull requests Releases Wiki Activity

* grub-core/partmap/sun.c (grub_sun_is_valid): make argument uint16_t *

Browse source 
to ensure alignment.
	(sun_partition_map_iterate): Make `block' a union to ensure alignment.
This commit is contained in:
Vladimir 'phcoder' Serbinenko 2011-12-13 14:40:41 +01:00
parent 58acccd645
commit a23f2cc4d6
2 changed files with 21 additions and 11 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

6
ChangeLog
View file

@ -1,3 +1,9 @@
2011-12-13 Vladimir Serbinenko <phcoder@gmail.com>
* grub-core/partmap/sun.c (grub_sun_is_valid): make argument uint16_t *
to ensure alignment.
(sun_partition_map_iterate): Make `block' a union to ensure alignment.
2011-12-13 Vladimir Serbinenko <phcoder@gmail.com>
* grub-core/fs/ntfs.c (u16at): Make into inline function.

26
grub-core/partmap/sun.c
View file

@ -71,13 +71,13 @@ static struct grub_partition_map grub_sun_partition_map;
/* Verify checksum (true=ok). */
static int
grub_sun_is_valid (struct grub_sun_block *label)
grub_sun_is_valid (grub_uint16_t *label)
{
grub_uint16_t *pos;
grub_uint16_t sum = 0;
for (pos = (grub_uint16_t *) label;
pos < (grub_uint16_t *) (label + 1);
for (pos = label;
pos < (label + sizeof (struct grub_sun_block) / 2);
pos++)
sum ^= *pos;
@ -90,7 +90,11 @@ sun_partition_map_iterate (grub_disk_t disk,
const grub_partition_t partition))
{
struct grub_partition p;
struct grub_sun_block block;
union
{
struct grub_sun_block sun;
grub_uint16_t raw[0];
} block;
int partnum;
grub_err_t err;
@ -100,10 +104,10 @@ sun_partition_map_iterate (grub_disk_t disk,
if (err)
return err;
if (GRUB_PARTMAP_SUN_MAGIC != grub_be_to_cpu16 (block.magic))
if (GRUB_PARTMAP_SUN_MAGIC != grub_be_to_cpu16 (block.sun.magic))
return grub_error (GRUB_ERR_BAD_PART_TABLE, "not a sun partition table");
if (! grub_sun_is_valid (&block))
if (! grub_sun_is_valid (block.raw))
return grub_error (GRUB_ERR_BAD_PART_TABLE, "invalid checksum");
/* Maybe another error value would be better, because partition
@ -112,14 +116,14 @@ sun_partition_map_iterate (grub_disk_t disk,
{
struct grub_sun_partition_descriptor *desc;
if (block.infos[partnum].id == 0
|| block.infos[partnum].id == GRUB_PARTMAP_SUN_WHOLE_DISK_ID)
if (block.sun.infos[partnum].id == 0
|| block.sun.infos[partnum].id == GRUB_PARTMAP_SUN_WHOLE_DISK_ID)
continue;
desc = &block.partitions[partnum];
desc = &block.sun.partitions[partnum];
p.start = ((grub_uint64_t) grub_be_to_cpu32 (desc->start_cylinder)
* grub_be_to_cpu16 (block.ntrks)
* grub_be_to_cpu16 (block.nsect));
* grub_be_to_cpu16 (block.sun.ntrks)
* grub_be_to_cpu16 (block.sun.nsect));
p.len = grub_be_to_cpu32 (desc->num_sectors);
p.number = p.index = partnum;
if (p.len)