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/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2010 Free Software Foundation, Inc.
*
* GRUB is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* GRUB is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
*/
#include <grub/partition.h>
#include <grub/disk.h>
#include <grub/mm.h>
#include <grub/misc.h>
#include <grub/dl.h>
#include <grub/symbol.h>
#include <grub/types.h>
#include <grub/err.h>
GRUB_MOD_LICENSE ("GPLv3+");
static struct grub_partition_map grub_plan_partition_map;
static grub_err_t
plan_partition_map_iterate (grub_disk_t disk,
grub_partition_iterate_hook_t hook,
void *hook_data)
{
struct grub_partition p;
int ptr = 0;
grub_err_t err;
p.partmap = &grub_plan_partition_map;
p.msdostype = 0;
for (p.number = 0; ; p.number++)
{
char sig[sizeof ("part ") - 1];
char c;
p.offset = (ptr >> GRUB_DISK_SECTOR_BITS) + 1;
p.index = ptr & (GRUB_DISK_SECTOR_SIZE - 1);
err = grub_disk_read (disk, 1, ptr, sizeof (sig), sig);
if (err)
return err;
if (grub_memcmp (sig, "part ", sizeof ("part ") - 1) != 0)
break;
ptr += sizeof (sig);
do
{
err = grub_disk_read (disk, 1, ptr, 1, &c);
if (err)
return err;
ptr++;
}
while (grub_isdigit (c) || grub_isalpha (c));
if (c != ' ')
break;
p.start = 0;
while (1)
{
err = grub_disk_read (disk, 1, ptr, 1, &c);
if (err)
return err;
ptr++;
if (!grub_isdigit (c))
break;
p.start = p.start * 10 + (c - '0');
}
if (c != ' ')
break;
p.len = 0;
while (1)
{
err = grub_disk_read (disk, 1, ptr, 1, &c);
if (err)
return err;
ptr++;
if (!grub_isdigit (c))
break;
p.len = p.len * 10 + (c - '0');
}
if (c != '\n')
break;
p.len -= p.start;
if (hook (disk, &p, hook_data))
return grub_errno;
}
if (p.number == 0)
return grub_error (GRUB_ERR_BAD_PART_TABLE, "not a plan partition table");
return GRUB_ERR_NONE;
}
/* Partition map type. */
static struct grub_partition_map grub_plan_partition_map =
{
.name = "plan",
.iterate = plan_partition_map_iterate,
};
GRUB_MOD_INIT(part_plan)
{
grub_partition_map_register (&grub_plan_partition_map);
}
GRUB_MOD_FINI(part_plan)
{
grub_partition_map_unregister (&grub_plan_partition_map);
}
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