163 lines
3.5 KiB
C
Executable File
163 lines
3.5 KiB
C
Executable File
/*
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libparted
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Copyright (C) 1998-2001, 2007-2014, 2019-2023 Free Software Foundation,
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Inc.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <config.h>
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#include <string.h>
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#include <uuid/uuid.h>
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#include "fat.h"
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PedFileSystem*
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fat_alloc (const PedGeometry* geom)
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{
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PedFileSystem* fs;
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fs = (PedFileSystem*) ped_malloc (sizeof (PedFileSystem));
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if (!fs)
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goto error;
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fs->type_specific = (FatSpecific*) ped_malloc (sizeof (FatSpecific));
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if (!fs->type_specific)
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goto error_free_fs;
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FatSpecific* fs_info = (FatSpecific*) fs->type_specific;
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fs_info->boot_sector = NULL;
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fs_info->info_sector = NULL;
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fs->geom = ped_geometry_duplicate (geom);
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if (!fs->geom)
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goto error_free_type_specific;
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fs->checked = 0;
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return fs;
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error_free_type_specific:
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free (fs->type_specific);
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error_free_fs:
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free (fs);
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error:
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return NULL;
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}
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void
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fat_free (PedFileSystem* fs)
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{
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FatSpecific* fs_info = (FatSpecific*) fs->type_specific;
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free (fs_info->boot_sector);
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ped_geometry_destroy (fs->geom);
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free (fs->type_specific);
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free (fs);
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}
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PedGeometry*
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fat_probe (PedGeometry* geom, FatType* fat_type)
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{
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PedFileSystem* fs;
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FatSpecific* fs_info;
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PedGeometry* result;
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fs = fat_alloc (geom);
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if (!fs)
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goto error;
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fs_info = (FatSpecific*) fs->type_specific;
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if (!fat_boot_sector_read (&fs_info->boot_sector, geom))
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goto error_free_fs;
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if (!fat_boot_sector_analyse (fs_info->boot_sector, fs))
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goto error_free_fs;
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*fat_type = fs_info->fat_type;
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result = ped_geometry_new (geom->dev, geom->start,
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fs_info->sector_count);
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fat_free (fs);
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return result;
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error_free_fs:
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fat_free (fs);
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error:
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return NULL;
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}
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PedGeometry*
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fat_probe_fat16 (PedGeometry* geom)
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{
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FatType fat_type;
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PedGeometry* probed_geom = fat_probe (geom, &fat_type);
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if (probed_geom) {
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if (fat_type == FAT_TYPE_FAT16)
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return probed_geom;
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ped_geometry_destroy (probed_geom);
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}
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return NULL;
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}
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PedGeometry*
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fat_probe_fat32 (PedGeometry* geom)
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{
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FatType fat_type;
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PedGeometry* probed_geom = fat_probe (geom, &fat_type);
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if (probed_geom) {
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if (fat_type == FAT_TYPE_FAT32)
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return probed_geom;
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ped_geometry_destroy (probed_geom);
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}
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return NULL;
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}
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static PedFileSystemOps fat16_ops = {
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probe: fat_probe_fat16,
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};
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static PedFileSystemOps fat32_ops = {
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probe: fat_probe_fat32,
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};
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PedFileSystemType fat16_type = {
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next: NULL,
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ops: &fat16_ops,
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name: "fat16",
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};
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PedFileSystemType fat32_type = {
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next: NULL,
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ops: &fat32_ops,
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name: "fat32",
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};
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void
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ped_file_system_fat_init ()
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{
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if (sizeof (FatBootSector) != 512) {
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ped_exception_throw (PED_EXCEPTION_BUG, PED_EXCEPTION_CANCEL,
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_("GNU Parted was miscompiled: the FAT boot sector "
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"should be 512 bytes. FAT support will be disabled."));
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} else {
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ped_file_system_type_register (&fat16_type);
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ped_file_system_type_register (&fat32_type);
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}
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}
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void
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ped_file_system_fat_done ()
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{
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ped_file_system_type_unregister (&fat16_type);
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ped_file_system_type_unregister (&fat32_type);
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}
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