88 lines
2.4 KiB
C
88 lines
2.4 KiB
C
/*******************************************************************************
|
|
|
|
Copyright(C) Jonas 'Sortie' Termansen 2015.
|
|
|
|
This file is part of Sortix libmount.
|
|
|
|
Sortix libmount is free software: you can redistribute it and/or modify it
|
|
under the terms of the GNU Lesser General Public License as published by the
|
|
Free Software Foundation, either version 3 of the License, or (at your
|
|
option) any later version.
|
|
|
|
Sortix libmount 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 Lesser General Public
|
|
License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public License
|
|
along with Sortix libmount. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
biosboot.c
|
|
GPT bios boot partition.
|
|
|
|
*******************************************************************************/
|
|
|
|
#include <stdbool.h>
|
|
#include <stddef.h>
|
|
#include <string.h>
|
|
|
|
#include <mount/biosboot.h>
|
|
#include <mount/blockdevice.h>
|
|
#include <mount/filesystem.h>
|
|
#include <mount/partition.h>
|
|
#include <mount/uuid.h>
|
|
|
|
#include "util.h"
|
|
|
|
static size_t biosboot_probe_amount(struct blockdevice* bdev)
|
|
{
|
|
(void) bdev;
|
|
return 0;
|
|
}
|
|
|
|
static bool biosboot_probe(struct blockdevice* bdev,
|
|
const unsigned char* leading,
|
|
size_t amount)
|
|
{
|
|
(void) leading;
|
|
(void) amount;
|
|
struct partition* p = bdev->p;
|
|
if ( !p )
|
|
return false;
|
|
if ( p->table_type != PARTITION_TABLE_TYPE_GPT )
|
|
return false;
|
|
unsigned char uuid[16];
|
|
uuid_from_string(uuid, BIOSBOOT_GPT_TYPE_UUID);
|
|
return memcmp(p->gpt_type_guid, uuid, 16) == 0;
|
|
}
|
|
|
|
static void biosboot_release(struct filesystem* fs)
|
|
{
|
|
if ( !fs )
|
|
return;
|
|
free(fs);
|
|
}
|
|
|
|
static enum filesystem_error biosboot_inspect(struct filesystem** fs_ptr,
|
|
struct blockdevice* bdev)
|
|
{
|
|
*fs_ptr = NULL;
|
|
struct filesystem* fs = CALLOC_TYPE(struct filesystem);
|
|
if ( !fs )
|
|
return FILESYSTEM_ERROR_ERRNO;
|
|
fs->bdev = bdev;
|
|
fs->handler = &biosboot_handler;
|
|
fs->handler_private = NULL;
|
|
fs->fstype_name = "biosboot";
|
|
return *fs_ptr = fs, FILESYSTEM_ERROR_NONE;
|
|
}
|
|
|
|
const struct filesystem_handler biosboot_handler =
|
|
{
|
|
.handler_name = "biosboot",
|
|
.probe_amount = biosboot_probe_amount,
|
|
.probe = biosboot_probe,
|
|
.inspect = biosboot_inspect,
|
|
.release = biosboot_release,
|
|
};
|