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- /*
- * volume.h - Exports for NTFS volume handling. Part of the Linux-NTFS project.
- *
- * Copyright (c) 2000-2004 Anton Altaparmakov
- * Copyright (c) 2005 Yura Pakhuchiy
- *
- * This program/include file 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 2 of the License, or
- * (at your option) any later version.
- *
- * This program/include file 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 (in the main directory of the Linux-NTFS
- * distribution in the file COPYING); if not, write to the Free Software
- * Foundation,Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
- #ifndef _NTFS_VOLUME_H
- #define _NTFS_VOLUME_H
-
- #ifdef HAVE_CONFIG_H
- #include "config.h"
- #endif
-
- #include <stdio.h>
- #ifdef HAVE_SYS_PARAM_H
- # include <sys/param.h>
- #endif
- #ifdef HAVE_SYS_MOUNT_H
- # include <sys/mount.h>
- #endif
- #ifdef HAVE_MNTENT_H
- # include <mntent.h>
- #endif
-
- /* Both under Cygwin and DJGPP we do not have MS_RDONLY, so we define it. */
- #if !defined(MS_RDONLY)
- typedef enum {
- MS_RDONLY = 1,
- } MS_MOUNT;
- #endif
-
- /* Forward declaration */
- typedef struct _ntfs_volume ntfs_volume;
-
- #include "types.h"
- #include "support.h"
- #include "device.h"
- #include "inode.h"
- #include "attrib.h"
-
- /*
- * Flags returned by the ntfs_check_if_mounted() function.
- */
- typedef enum {
- NTFS_MF_MOUNTED = 1, /* Device is mounted. */
- NTFS_MF_ISROOT = 2, /* Device is mounted as system root. */
- NTFS_MF_READONLY = 4, /* Device is mounted read-only. */
- } ntfs_mount_flags;
-
- extern int ntfs_check_if_mounted(const char *file, unsigned long *mnt_flags);
-
- /*
- * Defined bits for the state field in the ntfs_volume structure.
- */
- typedef enum {
- NV_ReadOnly, /* 1: Volume is read-only. */
- NV_CaseSensitive, /* 1: Volume is mounted case-sensitive. */
- NV_LogFileEmpty, /* 1: $logFile journal is empty. */
- } ntfs_volume_state_bits;
-
- #define test_nvol_flag(nv, flag) test_bit(NV_##flag, (nv)->state)
- #define set_nvol_flag(nv, flag) set_bit(NV_##flag, (nv)->state)
- #define clear_nvol_flag(nv, flag) clear_bit(NV_##flag, (nv)->state)
-
- #define NVolReadOnly(nv) test_nvol_flag(nv, ReadOnly)
- #define NVolSetReadOnly(nv) set_nvol_flag(nv, ReadOnly)
- #define NVolClearReadOnly(nv) clear_nvol_flag(nv, ReadOnly)
-
- #define NVolCaseSensitive(nv) test_nvol_flag(nv, CaseSensitive)
- #define NVolSetCaseSensitive(nv) set_nvol_flag(nv, CaseSensitive)
- #define NVolClearCaseSensitive(nv) clear_nvol_flag(nv, CaseSensitive)
-
- #define NVolLogFileEmpty(nv) test_nvol_flag(nv, LogFileEmpty)
- #define NVolSetLogFileEmpty(nv) set_nvol_flag(nv, LogFileEmpty)
- #define NVolClearLogFileEmpty(nv) clear_nvol_flag(nv, LogFileEmpty)
-
- /*
- * NTFS version 1.1 and 1.2 are used by Windows NT4.
- * NTFS version 2.x is used by Windows 2000 Beta
- * NTFS version 3.0 is used by Windows 2000.
- * NTFS version 3.1 is used by Windows XP, Windows Server 2003 and Longhorn.
- */
-
- #define NTFS_V1_1(major, minor) ((major) == 1 && (minor) == 1)
- #define NTFS_V1_2(major, minor) ((major) == 1 && (minor) == 2)
- #define NTFS_V2_X(major, minor) ((major) == 2)
- #define NTFS_V3_0(major, minor) ((major) == 3 && (minor) == 0)
- #define NTFS_V3_1(major, minor) ((major) == 3 && (minor) == 1)
-
- #define NTFS_BUF_SIZE 8192
-
- /*
- * ntfs_volume - structure describing an open volume in memory
- */
- struct _ntfs_volume {
- union {
- struct ntfs_device *dev; /* NTFS device associated with
- the volume. */
- void *sb; /* For kernel porting compatibility. */
- };
- char *vol_name; /* Name of the volume. */
- unsigned long state; /* NTFS specific flags describing this volume.
- See ntfs_volume_state_bits above. */
-
- ntfs_inode *vol_ni; /* ntfs_inode structure for FILE_Volume. */
- u8 major_ver; /* Ntfs major version of volume. */
- u8 minor_ver; /* Ntfs minor version of volume. */
- u16 flags; /* Bit array of VOLUME_* flags. */
-
- u16 sector_size; /* Byte size of a sector. */
- u8 sector_size_bits; /* Log(2) of the byte size of a sector. */
- u32 cluster_size; /* Byte size of a cluster. */
- u32 mft_record_size; /* Byte size of a mft record. */
- u32 indx_record_size; /* Byte size of a INDX record. */
- u8 cluster_size_bits; /* Log(2) of the byte size of a cluster. */
- u8 mft_record_size_bits;/* Log(2) of the byte size of a mft record. */
- u8 indx_record_size_bits;/* Log(2) of the byte size of a INDX record. */
-
- /* Variables used by the cluster and mft allocators. */
- u8 mft_zone_multiplier; /* Initial mft zone multiplier. */
- s64 mft_data_pos; /* Mft record number at which to allocate the
- next mft record. */
- LCN mft_zone_start; /* First cluster of the mft zone. */
- LCN mft_zone_end; /* First cluster beyond the mft zone. */
- LCN mft_zone_pos; /* Current position in the mft zone. */
- LCN data1_zone_pos; /* Current position in the first data zone. */
- LCN data2_zone_pos; /* Current position in the second data zone. */
-
- s64 nr_clusters; /* Volume size in clusters, hence also the
- number of bits in lcn_bitmap. */
- ntfs_inode *lcnbmp_ni; /* ntfs_inode structure for FILE_Bitmap. */
- ntfs_attr *lcnbmp_na; /* ntfs_attr structure for the data attribute
- of FILE_Bitmap. Each bit represents a
- cluster on the volume, bit 0 representing
- lcn 0 and so on. A set bit means that the
- cluster and vice versa. */
-
- LCN mft_lcn; /* Logical cluster number of the data attribute
- for FILE_MFT. */
- ntfs_inode *mft_ni; /* ntfs_inode structure for FILE_MFT. */
- ntfs_attr *mft_na; /* ntfs_attr structure for the data attribute
- of FILE_MFT. */
- ntfs_attr *mftbmp_na; /* ntfs_attr structure for the bitmap attribute
- of FILE_MFT. Each bit represents an mft
- record in the $DATA attribute, bit 0
- representing mft record 0 and so on. A set
- bit means that the mft record is in use and
- vice versa. */
-
- int mftmirr_size; /* Size of the FILE_MFTMirr in mft records. */
- LCN mftmirr_lcn; /* Logical cluster number of the data attribute
- for FILE_MFTMirr. */
- ntfs_inode *mftmirr_ni; /* ntfs_inode structure for FILE_MFTMirr. */
- ntfs_attr *mftmirr_na; /* ntfs_attr structure for the data attribute
- of FILE_MFTMirr. */
-
- ntfschar *upcase; /* Upper case equivalents of all 65536 2-byte
- Unicode characters. Obtained from
- FILE_UpCase. */
- u32 upcase_len; /* Length in Unicode characters of the upcase
- table. */
-
- ATTR_DEF *attrdef; /* Attribute definitions. Obtained from
- FILE_AttrDef. */
- s32 attrdef_len; /* Size of the attribute definition table in
- bytes. */
-
- void *private_data; /* Temp: for directory handling */
- void *private_bmp1;
- void *private_bmp2;
- };
-
- extern ntfs_volume *ntfs_volume_alloc(void);
-
- extern ntfs_volume *ntfs_volume_startup(struct ntfs_device *dev,
- unsigned long rwflag);
-
- extern ntfs_volume *ntfs_device_mount(struct ntfs_device *dev,
- unsigned long rwflag);
- extern int ntfs_device_umount(ntfs_volume *vol, const BOOL force);
-
- extern ntfs_volume *ntfs_mount(const char *name, unsigned long rwflag);
- extern int ntfs_umount(ntfs_volume *vol, const BOOL force);
-
- extern int ntfs_version_is_supported(ntfs_volume *vol);
- extern int ntfs_logfile_reset(ntfs_volume *vol);
-
- extern int ntfs_volume_write_flags(ntfs_volume *v, const u16 flags);
-
- #endif /* defined _NTFS_VOLUME_H */
-
-