mirror of
https://gitlab.com/sortix/sortix.git
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88 lines
2.4 KiB
C
88 lines
2.4 KiB
C
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/*******************************************************************************
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Copyright(C) Jonas 'Sortie' Termansen 2015.
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This file is part of Sortix libmount.
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Sortix libmount is free software: you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published by the
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Free Software Foundation, either version 3 of the License, or (at your
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option) any later version.
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Sortix libmount is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
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License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with Sortix libmount. If not, see <http://www.gnu.org/licenses/>.
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biosboot.c
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GPT bios boot partition.
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*******************************************************************************/
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#include <stdbool.h>
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#include <stddef.h>
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#include <string.h>
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#include <mount/biosboot.h>
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#include <mount/blockdevice.h>
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#include <mount/filesystem.h>
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#include <mount/partition.h>
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#include <mount/uuid.h>
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#include "util.h"
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static size_t biosboot_probe_amount(struct blockdevice* bdev)
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{
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(void) bdev;
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return 0;
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}
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static bool biosboot_probe(struct blockdevice* bdev,
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const unsigned char* leading,
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size_t amount)
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{
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(void) leading;
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(void) amount;
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struct partition* p = bdev->p;
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if ( !p )
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return false;
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if ( p->table_type != PARTITION_TABLE_TYPE_GPT )
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return false;
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unsigned char uuid[16];
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uuid_from_string(uuid, BIOSBOOT_GPT_TYPE_UUID);
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return memcmp(p->gpt_type_guid, uuid, 16) == 0;
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}
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static void biosboot_release(struct filesystem* fs)
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{
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if ( !fs )
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return;
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free(fs);
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}
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static enum filesystem_error biosboot_inspect(struct filesystem** fs_ptr,
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struct blockdevice* bdev)
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{
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*fs_ptr = NULL;
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struct filesystem* fs = CALLOC_TYPE(struct filesystem);
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if ( !fs )
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return FILESYSTEM_ERROR_ERRNO;
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fs->bdev = bdev;
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fs->handler = &biosboot_handler;
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fs->handler_private = NULL;
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fs->fstype_name = "biosboot";
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return *fs_ptr = fs, FILESYSTEM_ERROR_NONE;
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}
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const struct filesystem_handler biosboot_handler =
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{
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.handler_name = "biosboot",
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.probe_amount = biosboot_probe_amount,
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.probe = biosboot_probe,
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.inspect = biosboot_inspect,
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.release = biosboot_release,
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};
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