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/*
libparted
Copyright (C) 1998-2001, 2007-2014, 2019-2022 Free Software Foundation,
Inc.
This program 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.
This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <config.h>
#include <string.h>
#include <uuid/uuid.h>
#include "fat.h"
PedFileSystem*
fat_alloc (const PedGeometry* geom)
{
PedFileSystem* fs;
fs = (PedFileSystem*) ped_malloc (sizeof (PedFileSystem));
if (!fs)
goto error;
fs->type_specific = (FatSpecific*) ped_malloc (sizeof (FatSpecific));
if (!fs->type_specific)
goto error_free_fs;
FatSpecific* fs_info = (FatSpecific*) fs->type_specific;
fs_info->boot_sector = NULL;
fs_info->info_sector = NULL;
fs->geom = ped_geometry_duplicate (geom);
if (!fs->geom)
goto error_free_type_specific;
fs->checked = 0;
return fs;
error_free_type_specific:
free (fs->type_specific);
error_free_fs:
free (fs);
error:
return NULL;
}
void
fat_free (PedFileSystem* fs)
{
FatSpecific* fs_info = (FatSpecific*) fs->type_specific;
free (fs_info->boot_sector);
ped_geometry_destroy (fs->geom);
free (fs->type_specific);
free (fs);
}
PedGeometry*
fat_probe (PedGeometry* geom, FatType* fat_type)
{
PedFileSystem* fs;
FatSpecific* fs_info;
PedGeometry* result;
fs = fat_alloc (geom);
if (!fs)
goto error;
fs_info = (FatSpecific*) fs->type_specific;
if (!fat_boot_sector_read (&fs_info->boot_sector, geom))
goto error_free_fs;
if (!fat_boot_sector_analyse (fs_info->boot_sector, fs))
goto error_free_fs;
*fat_type = fs_info->fat_type;
result = ped_geometry_new (geom->dev, geom->start,
fs_info->sector_count);
fat_free (fs);
return result;
error_free_fs:
fat_free (fs);
error:
return NULL;
}
PedGeometry*
fat_probe_fat16 (PedGeometry* geom)
{
FatType fat_type;
PedGeometry* probed_geom = fat_probe (geom, &fat_type);
if (probed_geom) {
if (fat_type == FAT_TYPE_FAT16)
return probed_geom;
ped_geometry_destroy (probed_geom);
}
return NULL;
}
PedGeometry*
fat_probe_fat32 (PedGeometry* geom)
{
FatType fat_type;
PedGeometry* probed_geom = fat_probe (geom, &fat_type);
if (probed_geom) {
if (fat_type == FAT_TYPE_FAT32)
return probed_geom;
ped_geometry_destroy (probed_geom);
}
return NULL;
}
static PedFileSystemOps fat16_ops = {
probe: fat_probe_fat16,
};
static PedFileSystemOps fat32_ops = {
probe: fat_probe_fat32,
};
PedFileSystemType fat16_type = {
next: NULL,
ops: &fat16_ops,
name: "fat16",
};
PedFileSystemType fat32_type = {
next: NULL,
ops: &fat32_ops,
name: "fat32",
};
void
ped_file_system_fat_init ()
{
if (sizeof (FatBootSector) != 512) {
ped_exception_throw (PED_EXCEPTION_BUG, PED_EXCEPTION_CANCEL,
_("GNU Parted was miscompiled: the FAT boot sector "
"should be 512 bytes. FAT support will be disabled."));
} else {
ped_file_system_type_register (&fat16_type);
ped_file_system_type_register (&fat32_type);
}
}
void
ped_file_system_fat_done ()
{
ped_file_system_type_unregister (&fat16_type);
ped_file_system_type_unregister (&fat32_type);
}
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