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Reimport nestpart

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This commit is contained in:
Vladimir 'phcoder' Serbinenko 2010-02-06 18:43:37 +01:00
parent bf7fcba2d7
commit 15cb7d433f
26 changed files with 561 additions and 720 deletions
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80
partmap/gpt.c
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@ -44,18 +44,13 @@ gpt_partition_map_iterate (grub_disk_t disk,
struct grub_partition part;
struct grub_gpt_header gpt;
struct grub_gpt_partentry entry;
struct grub_disk raw;
struct grub_msdos_partition_mbr mbr;
grub_uint64_t entries;
unsigned int i;
int last_offset = 0;
/* Enforce raw disk access. */
raw = *disk;
raw.partition = 0;
/* Read the protective MBR. */
if (grub_disk_read (&raw, 0, 0, sizeof (mbr), &mbr))
if (grub_disk_read (disk, 0, 0, sizeof (mbr), &mbr))
return grub_errno;
/* Check if it is valid. */
@ -67,7 +62,7 @@ gpt_partition_map_iterate (grub_disk_t disk,
return grub_error (GRUB_ERR_BAD_PART_TABLE, "no GPT partition map found");
/* Read the GPT header. */
if (grub_disk_read (&raw, 1, 0, sizeof (gpt), &gpt))
if (grub_disk_read (disk, 1, 0, sizeof (gpt), &gpt))
return grub_errno;
if (grub_memcmp (gpt.magic, grub_gpt_magic, sizeof (grub_gpt_magic)))
@ -76,11 +71,15 @@ gpt_partition_map_iterate (grub_disk_t disk,
grub_dprintf ("gpt", "Read a valid GPT header\n");
entries = grub_le_to_cpu64 (gpt.partitions);
part.data = grub_malloc (sizeof (entry));
for (i = 0; i < grub_le_to_cpu32 (gpt.maxpart); i++)
{
if (grub_disk_read (&raw, entries, last_offset,
if (grub_disk_read (disk, entries, last_offset,
sizeof (entry), &entry))
return grub_errno;
{
grub_free (part.data);
return grub_errno;
}
if (grub_memcmp (&grub_gpt_partition_type_empty, &entry.type,
sizeof (grub_gpt_partition_type_empty)))
@ -90,16 +89,17 @@ gpt_partition_map_iterate (grub_disk_t disk,
part.len = (grub_le_to_cpu64 (entry.end)
- grub_le_to_cpu64 (entry.start) + 1);
part.offset = entries;
part.index = i;
part.number = i;
part.index = last_offset;
part.partmap = &grub_gpt_partition_map;
part.data = &entry;
grub_memcpy (part.data, &entry, sizeof (entry));
grub_dprintf ("gpt", "GPT entry %d: start=%lld, length=%lld\n", i,
(unsigned long long) part.start,
(unsigned long long) part.len);
if (hook (disk, &part))
return 1;
return grub_errno;
}
last_offset += grub_le_to_cpu32 (gpt.partentry_size);
@ -110,59 +110,9 @@ gpt_partition_map_iterate (grub_disk_t disk,
}
}
return 0;
}
grub_free (part.data);
static grub_partition_t
gpt_partition_map_probe (grub_disk_t disk, const char *str)
{
grub_partition_t p = 0;
int partnum = 0;
char *s = (char *) str;
auto int find_func (grub_disk_t d, const grub_partition_t partition);
int find_func (grub_disk_t d __attribute__ ((unused)),
const grub_partition_t partition)
{
if (partnum == partition->index)
{
p = (grub_partition_t) grub_malloc (sizeof (*p));
if (! p)
return 1;
grub_memcpy (p, partition, sizeof (*p));
return 1;
}
return 0;
}
/* Get the partition number. */
partnum = grub_strtoul (s, 0, 10) - 1;
if (grub_errno)
{
grub_error (GRUB_ERR_BAD_FILENAME, "invalid partition");
return 0;
}
gpt_partition_map_iterate (disk, find_func);
if (grub_errno)
goto fail;
return p;
fail:
grub_free (p);
return 0;
}
static char *
gpt_partition_map_get_name (const grub_partition_t p)
{
return grub_xasprintf ("%d", p->index + 1);
return GRUB_ERR_NONE;
}
@ -171,8 +121,6 @@ static struct grub_partition_map grub_gpt_partition_map =
{
.name = "part_gpt",
.iterate = gpt_partition_map_iterate,
.probe = gpt_partition_map_probe,
.get_name = gpt_partition_map_get_name
};
GRUB_MOD_INIT(gpt_partition_map)