pmt: initial 3.0.2 update

jni/parted/libparted/fs/fat/fat.c

@@ -0,0 +1,162 @@
+/*
+    libparted
+    Copyright (C) 1998-2001, 2007-2014, 2019-2023 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);
+}