1 files changed, 150 insertions, 0 deletions
diff --git a/libparted/fs/r/fat/fatio.c b/libparted/fs/r/fat/fatio.c
new file mode 100644
index 0000000..3a947ff
--- /dev/null
+++ b/libparted/fs/r/fat/fatio.c
@@ -0,0 +1,150 @@
+/*
+    libparted
+    Copyright (C) 1998-2000, 2007, 2009-2014, 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 "fat.h"
+#include "fatio.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <ctype.h>
+
+#ifndef DISCOVER_ONLY
+
+int
+fat_read_fragments (PedFileSystem* fs, char* buf, FatFragment frag,
+		    FatFragment count)
+{
+	FatSpecific*	fs_info = FAT_SPECIFIC (fs);
+	PedSector	sector = fat_frag_to_sector (fs, frag);
+	PedSector	sector_count = count * fs_info->frag_sectors;
+
+	PED_ASSERT (frag >= 0 && frag < fs_info->frag_count);
+
+	return ped_geometry_read (fs->geom, buf, sector, sector_count);
+}
+
+int
+fat_read_fragment (PedFileSystem* fs, char* buf, FatFragment frag)
+{
+	return fat_read_fragments (fs, buf, frag, 1);
+}
+
+int
+fat_write_fragments (PedFileSystem* fs, char* buf, FatFragment frag,
+		     FatFragment count)
+{
+	FatSpecific*	fs_info = FAT_SPECIFIC (fs);
+	PedSector	sector = fat_frag_to_sector (fs, frag);
+	PedSector	sector_count = count * fs_info->frag_sectors;
+
+	PED_ASSERT (frag >= 0 && frag < fs_info->frag_count);
+
+	return ped_geometry_write (fs->geom, buf, sector, sector_count);
+}
+
+int
+fat_write_fragment (PedFileSystem* fs, char* buf, FatFragment frag)
+{
+	return fat_write_fragments (fs, buf, frag, 1);
+}
+
+int
+fat_write_sync_fragments (PedFileSystem* fs, char* buf, FatFragment frag,
+			  FatFragment count)
+{
+	if (!fat_write_fragments (fs, buf, frag, count))
+		return 0;
+	if (!ped_geometry_sync (fs->geom))
+		return 0;
+	return 1;
+}
+
+int
+fat_write_sync_fragment (PedFileSystem* fs, char* buf, FatFragment frag)
+{
+	return fat_write_sync_fragments (fs, buf, frag, 1);
+}
+
+int
+fat_read_clusters (PedFileSystem* fs, char *buf, FatCluster cluster,
+		   FatCluster count)
+{
+	FatSpecific*	fs_info = FAT_SPECIFIC (fs);
+	PedSector	sector = fat_cluster_to_sector (fs, cluster);
+	PedSector	sector_count = count * fs_info->cluster_sectors;
+
+	PED_ASSERT (cluster >= 2
+	    	    && cluster + count - 1 < fs_info->cluster_count + 2);
+
+	return ped_geometry_read (fs->geom, buf, sector, sector_count);
+}
+
+int
+fat_read_cluster (PedFileSystem* fs, char *buf, FatCluster cluster)
+{
+	return fat_read_clusters (fs, buf, cluster, 1);
+}
+
+int
+fat_write_clusters (PedFileSystem* fs, char *buf, FatCluster cluster,
+		    FatCluster count)
+{
+	FatSpecific*	fs_info = FAT_SPECIFIC (fs);
+	PedSector	sector = fat_cluster_to_sector (fs, cluster);
+	PedSector	sector_count = count * fs_info->cluster_sectors;
+
+	PED_ASSERT (cluster >= 2
+	    	    && cluster + count - 1 < fs_info->cluster_count + 2);
+
+	return ped_geometry_write (fs->geom, buf, sector, sector_count);
+}
+
+int
+fat_write_cluster (PedFileSystem* fs, char *buf, FatCluster cluster)
+{
+	return fat_write_clusters (fs, buf, cluster, 1);
+}
+
+int
+fat_write_sync_clusters (PedFileSystem* fs, char *buf, FatCluster cluster,
+			 FatCluster count)
+{
+	if (!fat_write_clusters (fs, buf, cluster, count))
+		return 0;
+	if (!ped_geometry_sync (fs->geom))
+		return 0;
+	return 1;
+}
+
+int
+fat_write_sync_cluster (PedFileSystem* fs, char *buf, FatCluster cluster)
+{
+	if (!fat_write_cluster (fs, buf, cluster))
+		return 0;
+	if (!ped_geometry_sync (fs->geom))
+		return 0;
+	return 1;
+}
+
+#endif /* !DISCOVER_ONLY */