1/* 2 * volume.h - Exports for NTFS volume handling. Originated from the Linux-NTFS project. 3 * 4 * Copyright (c) 2000-2004 Anton Altaparmakov 5 * Copyright (c) 2004-2005 Richard Russon 6 * Copyright (c) 2005-2006 Yura Pakhuchiy 7 * Copyright (c) 2005-2009 Szabolcs Szakacsits 8 * 9 * This program/include file is free software; you can redistribute it and/or 10 * modify it under the terms of the GNU General Public License as published 11 * by the Free Software Foundation; either version 2 of the License, or 12 * (at your option) any later version. 13 * 14 * This program/include file is distributed in the hope that it will be 15 * useful, but WITHOUT ANY WARRANTY; without even the implied warranty 16 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 17 * GNU General Public License for more details. 18 * 19 * You should have received a copy of the GNU General Public License 20 * along with this program (in the main directory of the NTFS-3G 21 * distribution in the file COPYING); if not, write to the Free Software 22 * Foundation,Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 23 */ 24 25#ifndef _NTFS_VOLUME_H 26#define _NTFS_VOLUME_H 27 28#ifdef HAVE_CONFIG_H 29#include "config.h" 30#endif 31 32#ifdef HAVE_STDIO_H 33#include <stdio.h> 34#endif 35#ifdef HAVE_SYS_PARAM_H 36#include <sys/param.h> 37#endif 38#ifdef HAVE_SYS_MOUNT_H 39#include <sys/mount.h> 40#endif 41#ifdef HAVE_MNTENT_H 42#include <mntent.h> 43#endif 44 45/* 46 * Under Cygwin, DJGPP and FreeBSD we do not have MS_RDONLY, 47 * so we define them ourselves. 48 */ 49#ifndef MS_RDONLY 50#define MS_RDONLY 1 51#endif 52 53#define MS_EXCLUSIVE 0x08000000 54 55#ifndef MS_RECOVER 56#define MS_RECOVER 0x10000000 57#endif 58 59#define MS_IGNORE_HIBERFILE 0x20000000 60 61/* Forward declaration */ 62typedef struct _ntfs_volume ntfs_volume; 63 64#include "types.h" 65#include "support.h" 66#include "device.h" 67#include "inode.h" 68#include "attrib.h" 69 70/** 71 * enum ntfs_mount_flags - 72 * 73 * Flags returned by the ntfs_check_if_mounted() function. 74 */ 75typedef enum { 76 NTFS_MF_MOUNTED = 1, /* Device is mounted. */ 77 NTFS_MF_ISROOT = 2, /* Device is mounted as system root. */ 78 NTFS_MF_READONLY = 4, /* Device is mounted read-only. */ 79} ntfs_mount_flags; 80 81extern int ntfs_check_if_mounted(const char *file, unsigned long *mnt_flags); 82 83typedef enum { 84 NTFS_VOLUME_OK = 0, 85 NTFS_VOLUME_SYNTAX_ERROR = 11, 86 NTFS_VOLUME_NOT_NTFS = 12, 87 NTFS_VOLUME_CORRUPT = 13, 88 NTFS_VOLUME_HIBERNATED = 14, 89 NTFS_VOLUME_UNCLEAN_UNMOUNT = 15, 90 NTFS_VOLUME_LOCKED = 16, 91 NTFS_VOLUME_RAID = 17, 92 NTFS_VOLUME_UNKNOWN_REASON = 18, 93 NTFS_VOLUME_NO_PRIVILEGE = 19, 94 NTFS_VOLUME_OUT_OF_MEMORY = 20, 95 NTFS_VOLUME_FUSE_ERROR = 21, 96 NTFS_VOLUME_INSECURE = 22 97} ntfs_volume_status; 98 99/** 100 * enum ntfs_volume_state_bits - 101 * 102 * Defined bits for the state field in the ntfs_volume structure. 103 */ 104typedef enum { 105 NV_ReadOnly, /* 1: Volume is read-only. */ 106 NV_CaseSensitive, /* 1: Volume is mounted case-sensitive. */ 107 NV_LogFileEmpty, /* 1: $logFile journal is empty. */ 108} ntfs_volume_state_bits; 109 110#define test_nvol_flag(nv, flag) test_bit(NV_##flag, (nv)->state) 111#define set_nvol_flag(nv, flag) set_bit(NV_##flag, (nv)->state) 112#define clear_nvol_flag(nv, flag) clear_bit(NV_##flag, (nv)->state) 113 114#define NVolReadOnly(nv) test_nvol_flag(nv, ReadOnly) 115#define NVolSetReadOnly(nv) set_nvol_flag(nv, ReadOnly) 116#define NVolClearReadOnly(nv) clear_nvol_flag(nv, ReadOnly) 117 118#define NVolCaseSensitive(nv) test_nvol_flag(nv, CaseSensitive) 119#define NVolSetCaseSensitive(nv) set_nvol_flag(nv, CaseSensitive) 120#define NVolClearCaseSensitive(nv) clear_nvol_flag(nv, CaseSensitive) 121 122#define NVolLogFileEmpty(nv) test_nvol_flag(nv, LogFileEmpty) 123#define NVolSetLogFileEmpty(nv) set_nvol_flag(nv, LogFileEmpty) 124#define NVolClearLogFileEmpty(nv) clear_nvol_flag(nv, LogFileEmpty) 125 126/* 127 * NTFS version 1.1 and 1.2 are used by Windows NT4. 128 * NTFS version 2.x is used by Windows 2000 Beta 129 * NTFS version 3.0 is used by Windows 2000. 130 * NTFS version 3.1 is used by Windows XP, 2003 and Vista. 131 */ 132 133#define NTFS_V1_1(major, minor) ((major) == 1 && (minor) == 1) 134#define NTFS_V1_2(major, minor) ((major) == 1 && (minor) == 2) 135#define NTFS_V2_X(major, minor) ((major) == 2) 136#define NTFS_V3_0(major, minor) ((major) == 3 && (minor) == 0) 137#define NTFS_V3_1(major, minor) ((major) == 3 && (minor) == 1) 138 139#define NTFS_BUF_SIZE 8192 140 141/** 142 * struct _ntfs_volume - structure describing an open volume in memory. 143 */ 144struct _ntfs_volume { 145 union { 146 struct ntfs_device *dev; /* NTFS device associated with 147 the volume. */ 148 void *sb; /* For kernel porting compatibility. */ 149 }; 150 char *vol_name; /* Name of the volume. */ 151 unsigned long state; /* NTFS specific flags describing this volume. 152 See ntfs_volume_state_bits above. */ 153 154 ntfs_inode *vol_ni; /* ntfs_inode structure for FILE_Volume. */ 155 u8 major_ver; /* Ntfs major version of volume. */ 156 u8 minor_ver; /* Ntfs minor version of volume. */ 157 u16 flags; /* Bit array of VOLUME_* flags. */ 158 159 u16 sector_size; /* Byte size of a sector. */ 160 u8 sector_size_bits; /* Log(2) of the byte size of a sector. */ 161 u32 cluster_size; /* Byte size of a cluster. */ 162 u32 mft_record_size; /* Byte size of a mft record. */ 163 u32 indx_record_size; /* Byte size of a INDX record. */ 164 u8 cluster_size_bits; /* Log(2) of the byte size of a cluster. */ 165 u8 mft_record_size_bits;/* Log(2) of the byte size of a mft record. */ 166 u8 indx_record_size_bits;/* Log(2) of the byte size of a INDX record. */ 167 168 /* Variables used by the cluster and mft allocators. */ 169 u8 mft_zone_multiplier; /* Initial mft zone multiplier. */ 170 s64 mft_data_pos; /* Mft record number at which to allocate the 171 next mft record. */ 172 LCN mft_zone_start; /* First cluster of the mft zone. */ 173 LCN mft_zone_end; /* First cluster beyond the mft zone. */ 174 LCN mft_zone_pos; /* Current position in the mft zone. */ 175 LCN data1_zone_pos; /* Current position in the first data zone. */ 176 LCN data2_zone_pos; /* Current position in the second data zone. */ 177 178 s64 nr_clusters; /* Volume size in clusters, hence also the 179 number of bits in lcn_bitmap. */ 180 ntfs_inode *lcnbmp_ni; /* ntfs_inode structure for FILE_Bitmap. */ 181 ntfs_attr *lcnbmp_na; /* ntfs_attr structure for the data attribute 182 of FILE_Bitmap. Each bit represents a 183 cluster on the volume, bit 0 representing 184 lcn 0 and so on. A set bit means that the 185 cluster and vice versa. */ 186 187 LCN mft_lcn; /* Logical cluster number of the data attribute 188 for FILE_MFT. */ 189 ntfs_inode *mft_ni; /* ntfs_inode structure for FILE_MFT. */ 190 ntfs_attr *mft_na; /* ntfs_attr structure for the data attribute 191 of FILE_MFT. */ 192 ntfs_attr *mftbmp_na; /* ntfs_attr structure for the bitmap attribute 193 of FILE_MFT. Each bit represents an mft 194 record in the $DATA attribute, bit 0 195 representing mft record 0 and so on. A set 196 bit means that the mft record is in use and 197 vice versa. */ 198 199 int mftmirr_size; /* Size of the FILE_MFTMirr in mft records. */ 200 LCN mftmirr_lcn; /* Logical cluster number of the data attribute 201 for FILE_MFTMirr. */ 202 ntfs_inode *mftmirr_ni; /* ntfs_inode structure for FILE_MFTMirr. */ 203 ntfs_attr *mftmirr_na; /* ntfs_attr structure for the data attribute 204 of FILE_MFTMirr. */ 205 206 ntfschar *upcase; /* Upper case equivalents of all 65536 2-byte 207 Unicode characters. Obtained from 208 FILE_UpCase. */ 209 u32 upcase_len; /* Length in Unicode characters of the upcase 210 table. */ 211 212 ATTR_DEF *attrdef; /* Attribute definitions. Obtained from 213 FILE_AttrDef. */ 214 s32 attrdef_len; /* Size of the attribute definition table in 215 bytes. */ 216 217 s64 free_clusters; /* Track the number of free clusters which 218 greatly improves statfs() performance */ 219 s64 free_mft_records; /* Same for free mft records (see above) */ 220}; 221 222extern const char *ntfs_home; 223 224extern ntfs_volume *ntfs_volume_alloc(void); 225 226extern ntfs_volume *ntfs_volume_startup(struct ntfs_device *dev, 227 unsigned long flags); 228 229extern ntfs_volume *ntfs_device_mount(struct ntfs_device *dev, 230 unsigned long flags); 231 232extern ntfs_volume *ntfs_mount(const char *name, unsigned long flags); 233extern int ntfs_umount(ntfs_volume *vol, const BOOL force); 234 235extern int ntfs_version_is_supported(ntfs_volume *vol); 236extern int ntfs_volume_check_hiberfile(ntfs_volume *vol, int verbose); 237extern int ntfs_logfile_reset(ntfs_volume *vol); 238 239extern int ntfs_volume_write_flags(ntfs_volume *vol, const u16 flags); 240 241extern int ntfs_volume_error(int err); 242extern void ntfs_mount_error(const char *vol, const char *mntpoint, int err); 243 244extern int ntfs_set_locale(void); 245 246#endif /* defined _NTFS_VOLUME_H */ 247 248