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* grub-core/partmap/sun.c (sun_partition_map_iterate): Don't needlesly

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allocate p.
This commit is contained in:
Vladimir 'phcoder' Serbinenko 2010-09-14 21:07:39 +02:00
parent 3c3b5040cd
commit d2ea455141
7 changed files with 450 additions and 961 deletions
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35
grub-core/partmap/sun.c
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@ -87,36 +87,23 @@ sun_partition_map_iterate (grub_disk_t disk,
int (*hook) (grub_disk_t disk,
const grub_partition_t partition))
{
grub_partition_t p;
struct grub_partition p;
struct grub_sun_block block;
int partnum;
grub_err_t err;
p = (grub_partition_t) grub_zalloc (sizeof (struct grub_partition));
if (! p)
return grub_errno;
p->partmap = &grub_sun_partition_map;
p.partmap = &grub_sun_partition_map;
err = grub_disk_read (disk, 0, 0, sizeof (struct grub_sun_block),
&block);
if (err)
{
grub_free (p);
return err;
}
return err;
if (GRUB_PARTMAP_SUN_MAGIC != grub_be_to_cpu16 (block.magic))
{
grub_free (p);
return grub_error (GRUB_ERR_BAD_PART_TABLE, "not a sun partition table");
}
return grub_error (GRUB_ERR_BAD_PART_TABLE, "not a sun partition table");
if (! grub_sun_is_valid (&block))
{
grub_free (p);
return grub_error (GRUB_ERR_BAD_PART_TABLE, "invalid checksum");
}
/* Maybe another error value would be better, because partition
table _is_ recognized but invalid. */
for (partnum = 0; partnum < GRUB_PARTMAP_SUN_MAX_PARTS; partnum++)
@ -128,20 +115,18 @@ sun_partition_map_iterate (grub_disk_t disk,
continue;
desc = &block.partitions[partnum];
p->start = ((grub_uint64_t) grub_be_to_cpu32 (desc->start_cylinder)
p.start = ((grub_uint64_t) grub_be_to_cpu32 (desc->start_cylinder)
* grub_be_to_cpu16 (block.ntrks)
* grub_be_to_cpu16 (block.nsect));
p->len = grub_be_to_cpu32 (desc->num_sectors);
p->number = p->index = partnum;
if (p->len)
p.len = grub_be_to_cpu32 (desc->num_sectors);
p.number = p.index = partnum;
if (p.len)
{
if (hook (disk, p))
if (hook (disk, &p))
partnum = GRUB_PARTMAP_SUN_MAX_PARTS;
}
}
grub_free (p);
return grub_errno;
}