mirror of
https://gitlab.com/sortix/sortix.git
synced 2023-02-13 20:55:38 -05:00
83 lines
2.3 KiB
C
83 lines
2.3 KiB
C
/*
|
|
* Copyright (c) 2015, 2016 Jonas 'Sortie' Termansen.
|
|
*
|
|
* Permission to use, copy, modify, and distribute this software for any
|
|
* purpose with or without fee is hereby granted, provided that the above
|
|
* copyright notice and this permission notice appear in all copies.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
|
|
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
|
|
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
|
|
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
|
|
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
|
|
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
|
|
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
|
|
*
|
|
* 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";
|
|
fs->flags = FILESYSTEM_FLAG_NOT_FILESYSTEM;
|
|
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,
|
|
};
|