usbloadergx/source/libs/libntfs/ntfsinternal.h

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/**
* ntfsinternal.h - Internal support routines for NTFS-based devices.
*
* Copyright (c) 2009 Rhys "Shareese" Koedijk
* Copyright (c) 2006 Michael "Chishm" Chisholm
*
* 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; if not, write to the Free Software Foundation,
* Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef _NTFSINTERNAL_H
#define _NTFSINTERNAL_H
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "types.h"
#include "compat.h"
#include "logging.h"
#include "layout.h"
#include "device.h"
#include "volume.h"
#include "dir.h"
#include "inode.h"
#include "attrib.h"
#include "reparse.h"
#include "security.h"
#include "efs.h"
#include "unistr.h"
#include <gccore.h>
#include <ogc/disc_io.h>
#include <sys/iosupport.h>
#define NTFS_MOUNT_PREFIX "ntfs" /* Device name prefix to use when auto-mounting */
#define NTFS_MAX_PARTITIONS 32 /* Maximum number of partitions that can be found */
#define NTFS_MAX_MOUNTS 10 /* Maximum number of mounts available at one time */
#define NTFS_MAX_SYMLINK_DEPTH 10 /* Maximum search depth when resolving symbolic links */
#define NTFS_OEM_ID cpu_to_le64(0x202020205346544eULL) /* "NTFS " */
#define MBR_SIGNATURE cpu_to_le16(0xAA55)
#define EBR_SIGNATURE cpu_to_le16(0xAA55)
#define PARTITION_STATUS_NONBOOTABLE 0x00 /* Non-bootable */
#define PARTITION_STATUS_BOOTABLE 0x80 /* Bootable (active) */
#define PARTITION_TYPE_EMPTY 0x00 /* Empty */
#define PARTITION_TYPE_DOS33_EXTENDED 0x05 /* DOS 3.3+ extended partition */
#define PARTITION_TYPE_NTFS 0x07 /* Windows NT NTFS */
#define PARTITION_TYPE_WIN95_EXTENDED 0x0F /* Windows 95 extended partition */
/* Forward declarations */
struct _ntfs_file_state;
struct _ntfs_dir_state;
/**
* PRIMARY_PARTITION - Block device partition record
*/
typedef struct _PARTITION_RECORD {
u8 status; /* Partition status; see above */
u8 chs_start[3]; /* Cylinder-head-sector address to first block of partition */
u8 type; /* Partition type; see above */
u8 chs_end[3]; /* Cylinder-head-sector address to last block of partition */
u32 lba_start; /* Local block address to first sector of partition */
u32 block_count; /* Number of blocks in partition */
} __attribute__((__packed__)) PARTITION_RECORD;
/**
* MASTER_BOOT_RECORD - Block device master boot record
*/
typedef struct _MASTER_BOOT_RECORD {
u8 code_area[446]; /* Code area; normally empty */
PARTITION_RECORD partitions[4]; /* 4 primary partitions */
u16 signature; /* MBR signature; 0xAA55 */
} __attribute__((__packed__)) MASTER_BOOT_RECORD;
/**
* EXTENDED_PARTITION - Block device extended boot record
*/
typedef struct _EXTENDED_BOOT_RECORD {
u8 code_area[446]; /* Code area; normally empty */
PARTITION_RECORD partition; /* Primary partition */
PARTITION_RECORD next_ebr; /* Next extended boot record in the chain */
u8 reserved[32]; /* Normally empty */
u16 signature; /* EBR signature; 0xAA55 */
} __attribute__((__packed__)) EXTENDED_BOOT_RECORD;
/**
* INTERFACE_ID - Disc interface identifier
*/
typedef struct _INTERFACE_ID {
const char *name; /* Interface name */
const DISC_INTERFACE *interface; /* Disc interface */
} INTERFACE_ID;
/**
* ntfs_atime_t - File access time update strategies
*/
typedef enum {
ATIME_ENABLED, /* Update access times */
ATIME_DISABLED /* Don't update access times */
} ntfs_atime_t;
/**
* ntfs_vd - NTFS volume descriptor
*/
typedef struct _ntfs_vd {
struct ntfs_device *dev; /* NTFS device handle */
ntfs_volume *vol; /* NTFS volume handle */
mutex_t lock; /* Volume lock mutex */
s64 id; /* Filesystem id */
u32 flags; /* Mount flags */
char name[128]; /* Volume name (cached) */
u16 uid; /* User id for entry creation */
u16 gid; /* Group id for entry creation */
u16 fmask; /* Unix style permission mask for file creation */
u16 dmask; /* Unix style permission mask for directory creation */
ntfs_atime_t atime; /* Entry access time update strategy */
bool showHiddenFiles; /* If true, show hidden files when enumerating directories */
bool showSystemFiles; /* If true, show system files when enumerating directories */
ntfs_inode *cwd_ni; /* Current directory */
struct _ntfs_dir_state *firstOpenDir; /* The start of a FILO linked list of currently opened directories */
struct _ntfs_file_state *firstOpenFile; /* The start of a FILO linked list of currently opened files */
u16 openDirCount; /* The total number of directories currently open in this volume */
u16 openFileCount; /* The total number of files currently open in this volume */
} ntfs_vd;
/* Lock volume */
static inline void ntfsLock (ntfs_vd *vd)
{
LWP_MutexLock(vd->lock);
}
/* Unlock volume */
static inline void ntfsUnlock (ntfs_vd *vd)
{
LWP_MutexUnlock(vd->lock);
}
/* Gekko device related routines */
int ntfsAddDevice (const char *name, void *deviceData);
void ntfsRemoveDevice (const char *path);
const devoptab_t *ntfsGetDevice (const char *path, bool useDefaultDevice);
const devoptab_t *ntfsGetDevOpTab (void);
const INTERFACE_ID* ntfsGetDiscInterfaces (void);
/* Miscellaneous helper/support routines */
int ntfsInitVolume (ntfs_vd *vd);
void ntfsDeinitVolume (ntfs_vd *vd);
ntfs_vd *ntfsGetVolume (const char *path);
ntfs_inode *ntfsOpenEntry (ntfs_vd *vd, const char *path);
ntfs_inode *ntfsParseEntry (ntfs_vd *vd, const char *path, int reparseLevel);
void ntfsCloseEntry (ntfs_vd *vd, ntfs_inode *ni);
ntfs_inode *ntfsCreate (ntfs_vd *vd, const char *path, mode_t type, const char *target);
int ntfsLink (ntfs_vd *vd, const char *old_path, const char *new_path);
int ntfsUnlink (ntfs_vd *vd, const char *path);
int ntfsSync (ntfs_vd *vd, ntfs_inode *ni);
int ntfsStat (ntfs_vd *vd, ntfs_inode *ni, struct stat *st);
void ntfsUpdateTimes (ntfs_vd *vd, ntfs_inode *ni, ntfs_time_update_flags mask);
const char *ntfsRealPath (const char *path);
int ntfsUnicodeToLocal (const ntfschar *ins, const int ins_len, char **outs, int outs_len);
int ntfsLocalToUnicode (const char *ins, ntfschar **outs);
#endif /* _NTFSINTERNAL_H */