1N/A/*
1N/A libparted
1N/A Copyright (C) 1998-2000, 2007, 2009-2010 Free Software Foundation,
1N/A Inc.
1N/A
1N/A This program is free software; you can redistribute it and/or modify
1N/A it under the terms of the GNU General Public License as published by
1N/A the Free Software Foundation; either version 3 of the License, or
1N/A (at your option) any later version.
1N/A
1N/A This program is distributed in the hope that it will be useful,
1N/A but WITHOUT ANY WARRANTY; without even the implied warranty of
1N/A MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
1N/A GNU General Public License for more details.
1N/A
1N/A You should have received a copy of the GNU General Public License
1N/A along with this program. If not, see <http://www.gnu.org/licenses/>.
1N/A*/
1N/A
1N/A#include <config.h>
1N/A#include "fat.h"
1N/A#include "fatio.h"
1N/A
1N/A#include <stdio.h>
1N/A#include <stdlib.h>
1N/A#include <sys/types.h>
1N/A#include <sys/stat.h>
1N/A#include <fcntl.h>
1N/A#include <errno.h>
1N/A#include <ctype.h>
1N/A
1N/A#ifndef DISCOVER_ONLY
1N/A
1N/Aint
1N/Afat_read_fragments (PedFileSystem* fs, char* buf, FatFragment frag,
1N/A FatFragment count)
1N/A{
1N/A FatSpecific* fs_info = FAT_SPECIFIC (fs);
1N/A PedSector sector = fat_frag_to_sector (fs, frag);
1N/A PedSector sector_count = count * fs_info->frag_sectors;
1N/A
1N/A PED_ASSERT (frag >= 0 && frag < fs_info->frag_count, return 0);
1N/A
1N/A return ped_geometry_read (fs->geom, buf, sector, sector_count);
1N/A}
1N/A
1N/Aint
1N/Afat_read_fragment (PedFileSystem* fs, char* buf, FatFragment frag)
1N/A{
1N/A return fat_read_fragments (fs, buf, frag, 1);
1N/A}
1N/A
1N/Aint
1N/Afat_write_fragments (PedFileSystem* fs, char* buf, FatFragment frag,
1N/A FatFragment count)
1N/A{
1N/A FatSpecific* fs_info = FAT_SPECIFIC (fs);
1N/A PedSector sector = fat_frag_to_sector (fs, frag);
1N/A PedSector sector_count = count * fs_info->frag_sectors;
1N/A
1N/A PED_ASSERT (frag >= 0 && frag < fs_info->frag_count, return 0);
1N/A
1N/A return ped_geometry_write (fs->geom, buf, sector, sector_count);
1N/A}
1N/A
1N/Aint
1N/Afat_write_fragment (PedFileSystem* fs, char* buf, FatFragment frag)
1N/A{
1N/A return fat_write_fragments (fs, buf, frag, 1);
1N/A}
1N/A
1N/Aint
1N/Afat_write_sync_fragments (PedFileSystem* fs, char* buf, FatFragment frag,
1N/A FatFragment count)
1N/A{
1N/A if (!fat_write_fragments (fs, buf, frag, count))
1N/A return 0;
1N/A if (!ped_geometry_sync (fs->geom))
1N/A return 0;
1N/A return 1;
1N/A}
1N/A
1N/Aint
1N/Afat_write_sync_fragment (PedFileSystem* fs, char* buf, FatFragment frag)
1N/A{
1N/A return fat_write_sync_fragments (fs, buf, frag, 1);
1N/A}
1N/A
1N/Aint
1N/Afat_read_clusters (PedFileSystem* fs, char *buf, FatCluster cluster,
1N/A FatCluster count)
1N/A{
1N/A FatSpecific* fs_info = FAT_SPECIFIC (fs);
1N/A PedSector sector = fat_cluster_to_sector (fs, cluster);
1N/A PedSector sector_count = count * fs_info->cluster_sectors;
1N/A
1N/A PED_ASSERT (cluster >= 2
1N/A && cluster + count - 1 < fs_info->cluster_count + 2,
1N/A return 0);
1N/A
1N/A return ped_geometry_read (fs->geom, buf, sector, sector_count);
1N/A}
1N/A
1N/Aint
1N/Afat_read_cluster (PedFileSystem* fs, char *buf, FatCluster cluster)
1N/A{
1N/A return fat_read_clusters (fs, buf, cluster, 1);
1N/A}
1N/A
1N/Aint
1N/Afat_write_clusters (PedFileSystem* fs, char *buf, FatCluster cluster,
1N/A FatCluster count)
1N/A{
1N/A FatSpecific* fs_info = FAT_SPECIFIC (fs);
1N/A PedSector sector = fat_cluster_to_sector (fs, cluster);
1N/A PedSector sector_count = count * fs_info->cluster_sectors;
1N/A
1N/A PED_ASSERT (cluster >= 2
1N/A && cluster + count - 1 < fs_info->cluster_count + 2,
1N/A return 0);
1N/A
1N/A return ped_geometry_write (fs->geom, buf, sector, sector_count);
1N/A}
1N/A
1N/Aint
1N/Afat_write_cluster (PedFileSystem* fs, char *buf, FatCluster cluster)
1N/A{
1N/A return fat_write_clusters (fs, buf, cluster, 1);
1N/A}
1N/A
1N/Aint
1N/Afat_write_sync_clusters (PedFileSystem* fs, char *buf, FatCluster cluster,
1N/A FatCluster count)
1N/A{
1N/A if (!fat_write_clusters (fs, buf, cluster, count))
1N/A return 0;
1N/A if (!ped_geometry_sync (fs->geom))
1N/A return 0;
1N/A return 1;
1N/A}
1N/A
1N/Aint
1N/Afat_write_sync_cluster (PedFileSystem* fs, char *buf, FatCluster cluster)
1N/A{
1N/A if (!fat_write_cluster (fs, buf, cluster))
1N/A return 0;
1N/A if (!ped_geometry_sync (fs->geom))
1N/A return 0;
1N/A return 1;
1N/A}
1N/A
1N/A#endif /* !DISCOVER_ONLY */