#include <pshpack1.h>
#include <poppack.h>

Include dependency graph for ext.h:

This graph shows which files directly or indirectly include this file:

Classes
struct	_ExtSuperBlock

struct	_ExtGroupDescriptor

struct	_Ext4ExtentHeader

struct	_Ext4ExtentIdx

struct	_Ext4Extent

struct	_ExtInode

struct	_ExtDirEntry

struct	_EXT_FILE_INFO

Macros
#define	EXT_SUPERBLOCK_MAGIC 0xEF53

#define	EXT_DYNAMIC_REVISION 1

#define	EXT_DEFAULT_INODE_SIZE 128

#define	EXT_DEFAULT_GROUP_DESC_SIZE 32

#define	EXT_DIR_ENTRY_MAX_NAME_LENGTH 255

#define	EXT_ROOT_INODE 2

#define	EXT_REVISION(sb) (sb->RevisionLevel)

#define	EXT_INODE_SIZE(sb) (EXT_REVISION(sb) < EXT_DYNAMIC_REVISION ? EXT_DEFAULT_INODE_SIZE : sb->InodeSize)

#define	EXT_GROUP_DESC_SIZE(sb) ((EXT_REVISION(sb) >= EXT_DYNAMIC_REVISION && sb->GroupDescSize) ? sb->GroupDescSize : EXT_DEFAULT_GROUP_DESC_SIZE)

#define	EXT4_INODE_FLAG_EXTENTS 0x80000

#define	EXT4_EXTENT_HEADER_MAGIC 0xF30A

#define	EXT4_EXTENT_MAX_LEVEL 5

#define	EXT4_EXTENT_MAX_LENGTH 32768

#define	EXT_S_IRWXO 0x0007

#define	EXT_S_IXOTH 0x0001

#define	EXT_S_IWOTH 0x0002

#define	EXT_S_IROTH 0x0004

#define	EXT_S_IRWXG 0x0038

#define	EXT_S_IXGRP 0x0008

#define	EXT_S_IWGRP 0x0010

#define	EXT_S_IRGRP 0x0020

#define	EXT_S_IRWXU 0x01C0

#define	EXT_S_IXUSR 0x0040

#define	EXT_S_IWUSR 0x0080

#define	EXT_S_IRUSR 0x0100

#define	EXT_S_ISVTX 0x0200

#define	EXT_S_ISGID 0x0400

#define	EXT_S_ISUID 0x0800

#define	EXT_S_IFMT 0xF000

#define	EXT_S_IFIFO 0x1000

#define	EXT_S_IFCHR 0x2000

#define	EXT_S_IFDIR 0x4000

#define	EXT_S_IFBLK 0x6000

#define	EXT_S_IFREG 0x8000

#define	EXT_S_IFLNK 0xA000

#define	EXT_S_IFSOCK 0xC000

#define	FAST_SYMLINK_MAX_NAME_SIZE 60

Typedefs
typedef struct _ExtSuperBlock	EXT_SUPER_BLOCK

typedef struct _ExtSuperBlock *	PEXT_SUPER_BLOCK

typedef struct _ExtGroupDescriptor	EXT_GROUP_DESC

typedef struct _ExtGroupDescriptor *	PEXT_GROUP_DESC

typedef struct _Ext4ExtentHeader	EXT4_EXTENT_HEADER

typedef struct _Ext4ExtentHeader *	PEXT4_EXTENT_HEADER

typedef struct _Ext4ExtentIdx	EXT4_EXTENT_IDX

typedef struct _Ext4ExtentIdx *	PEXT4_EXTENT_IDX

typedef struct _Ext4Extent	EXT4_EXTENT

typedef struct _Ext4Extent *	PEXT4_EXTENT

typedef struct _ExtInode	EXT_INODE

typedef struct _ExtInode *	PEXT_INODE

typedef struct _ExtDirEntry	EXT_DIR_ENTRY

typedef struct _ExtDirEntry *	PEXT_DIR_ENTRY

typedef struct _EXT_VOLUME_INFO *	PEXT_VOLUME_INFO

typedef struct _EXT_FILE_INFO	EXT_FILE_INFO

typedef struct _EXT_FILE_INFO *	PEXT_FILE_INFO

Functions
const DEVVTBL *	ExtMount (ULONG DeviceId)

Macro Definition Documentation

◆ EXT4_EXTENT_HEADER_MAGIC

#define EXT4_EXTENT_HEADER_MAGIC 0xF30A

Definition at line 203 of file ext.h.

◆ EXT4_EXTENT_MAX_LENGTH

#define EXT4_EXTENT_MAX_LENGTH 32768

Definition at line 209 of file ext.h.

◆ EXT4_EXTENT_MAX_LEVEL

#define EXT4_EXTENT_MAX_LEVEL 5

Definition at line 206 of file ext.h.

◆ EXT4_INODE_FLAG_EXTENTS

#define EXT4_INODE_FLAG_EXTENTS 0x80000

Definition at line 200 of file ext.h.

◆ EXT_DEFAULT_GROUP_DESC_SIZE

#define EXT_DEFAULT_GROUP_DESC_SIZE 32

Definition at line 48 of file ext.h.

◆ EXT_DEFAULT_INODE_SIZE

#define EXT_DEFAULT_INODE_SIZE 128

Definition at line 47 of file ext.h.

◆ EXT_DIR_ENTRY_MAX_NAME_LENGTH

#define EXT_DIR_ENTRY_MAX_NAME_LENGTH 255

Definition at line 50 of file ext.h.

◆ EXT_DYNAMIC_REVISION

#define EXT_DYNAMIC_REVISION 1

Definition at line 46 of file ext.h.

◆ EXT_GROUP_DESC_SIZE

#define EXT_GROUP_DESC_SIZE ( sb ) ((EXT_REVISION(sb) >= EXT_DYNAMIC_REVISION && sb->GroupDescSize) ? sb->GroupDescSize : EXT_DEFAULT_GROUP_DESC_SIZE)

Definition at line 196 of file ext.h.

◆ EXT_INODE_SIZE

#define EXT_INODE_SIZE ( sb ) (EXT_REVISION(sb) < EXT_DYNAMIC_REVISION ? EXT_DEFAULT_INODE_SIZE : sb->InodeSize)

Definition at line 192 of file ext.h.

◆ EXT_REVISION

#define EXT_REVISION ( sb ) (sb->RevisionLevel)

Definition at line 189 of file ext.h.

◆ EXT_ROOT_INODE

#define EXT_ROOT_INODE 2

Definition at line 186 of file ext.h.

◆ EXT_S_IFBLK

#define EXT_S_IFBLK 0x6000

Definition at line 235 of file ext.h.

◆ EXT_S_IFCHR

#define EXT_S_IFCHR 0x2000

Definition at line 233 of file ext.h.

◆ EXT_S_IFDIR

#define EXT_S_IFDIR 0x4000

Definition at line 234 of file ext.h.

◆ EXT_S_IFIFO

#define EXT_S_IFIFO 0x1000

Definition at line 232 of file ext.h.

◆ EXT_S_IFLNK

#define EXT_S_IFLNK 0xA000

Definition at line 237 of file ext.h.

◆ EXT_S_IFMT

#define EXT_S_IFMT 0xF000

Definition at line 231 of file ext.h.

◆ EXT_S_IFREG

#define EXT_S_IFREG 0x8000

Definition at line 236 of file ext.h.

◆ EXT_S_IFSOCK

#define EXT_S_IFSOCK 0xC000

Definition at line 238 of file ext.h.

◆ EXT_S_IRGRP

#define EXT_S_IRGRP 0x0020

Definition at line 220 of file ext.h.

◆ EXT_S_IROTH

#define EXT_S_IROTH 0x0004

Definition at line 215 of file ext.h.

◆ EXT_S_IRUSR

#define EXT_S_IRUSR 0x0100

Definition at line 225 of file ext.h.

◆ EXT_S_IRWXG

#define EXT_S_IRWXG 0x0038

Definition at line 217 of file ext.h.

◆ EXT_S_IRWXO

#define EXT_S_IRWXO 0x0007

Definition at line 212 of file ext.h.

◆ EXT_S_IRWXU

#define EXT_S_IRWXU 0x01C0

Definition at line 222 of file ext.h.

◆ EXT_S_ISGID

#define EXT_S_ISGID 0x0400

Definition at line 228 of file ext.h.

◆ EXT_S_ISUID

#define EXT_S_ISUID 0x0800

Definition at line 229 of file ext.h.

◆ EXT_S_ISVTX

#define EXT_S_ISVTX 0x0200

Definition at line 227 of file ext.h.

◆ EXT_S_IWGRP

#define EXT_S_IWGRP 0x0010

Definition at line 219 of file ext.h.

◆ EXT_S_IWOTH

#define EXT_S_IWOTH 0x0002

Definition at line 214 of file ext.h.

◆ EXT_S_IWUSR

#define EXT_S_IWUSR 0x0080

Definition at line 224 of file ext.h.

◆ EXT_S_IXGRP

#define EXT_S_IXGRP 0x0008

Definition at line 218 of file ext.h.

◆ EXT_S_IXOTH

#define EXT_S_IXOTH 0x0001

Definition at line 213 of file ext.h.

◆ EXT_S_IXUSR

#define EXT_S_IXUSR 0x0040

Definition at line 223 of file ext.h.

◆ EXT_SUPERBLOCK_MAGIC

#define EXT_SUPERBLOCK_MAGIC 0xEF53

Definition at line 45 of file ext.h.

◆ FAST_SYMLINK_MAX_NAME_SIZE

#define FAST_SYMLINK_MAX_NAME_SIZE 60

Definition at line 240 of file ext.h.

Typedef Documentation

◆ EXT4_EXTENT

typedef struct _Ext4Extent EXT4_EXTENT

◆ EXT4_EXTENT_HEADER

typedef struct _Ext4ExtentHeader EXT4_EXTENT_HEADER

◆ EXT4_EXTENT_IDX

typedef struct _Ext4ExtentIdx EXT4_EXTENT_IDX

◆ EXT_DIR_ENTRY

typedef struct _ExtDirEntry EXT_DIR_ENTRY

◆ EXT_FILE_INFO

typedef struct _EXT_FILE_INFO EXT_FILE_INFO

◆ EXT_GROUP_DESC

typedef struct _ExtGroupDescriptor EXT_GROUP_DESC

◆ EXT_INODE

typedef struct _ExtInode EXT_INODE

◆ EXT_SUPER_BLOCK

typedef struct _ExtSuperBlock EXT_SUPER_BLOCK

◆ PEXT4_EXTENT

typedef struct _Ext4Extent * PEXT4_EXTENT

◆ PEXT4_EXTENT_HEADER

typedef struct _Ext4ExtentHeader * PEXT4_EXTENT_HEADER

◆ PEXT4_EXTENT_IDX

typedef struct _Ext4ExtentIdx * PEXT4_EXTENT_IDX

◆ PEXT_DIR_ENTRY

typedef struct _ExtDirEntry * PEXT_DIR_ENTRY

◆ PEXT_FILE_INFO

typedef struct _EXT_FILE_INFO * PEXT_FILE_INFO

◆ PEXT_GROUP_DESC

typedef struct _ExtGroupDescriptor * PEXT_GROUP_DESC

◆ PEXT_INODE

typedef struct _ExtInode * PEXT_INODE

◆ PEXT_SUPER_BLOCK

typedef struct _ExtSuperBlock * PEXT_SUPER_BLOCK

◆ PEXT_VOLUME_INFO

typedef struct _EXT_VOLUME_INFO* PEXT_VOLUME_INFO

Definition at line 242 of file ext.h.

Function Documentation

◆ ExtMount()

const DEVVTBL * ExtMount ( ULONG DeviceId )

Definition at line 1380 of file ext.c.

{
    PEXT_VOLUME_INFO Volume;
    EXT_SUPER_BLOCK SuperBlock;
    LARGE_INTEGER Position;
    ULONG Count;
    ARC_STATUS Status;
 
    TRACE("Enter ExtMount(%lu)\n", DeviceId);
 
    /* Allocate data for volume information */
    Volume = FrLdrTempAlloc(sizeof(EXT_VOLUME_INFO), TAG_EXT_VOLUME);
    if (!Volume)
        return NULL;
    RtlZeroMemory(Volume, sizeof(EXT_VOLUME_INFO));
 
    /* Read the SuperBlock */
    Position.QuadPart = 2 * 512;
    Status = ArcSeek(DeviceId, &Position, SeekAbsolute);
    if (Status != ESUCCESS)
    {
        FrLdrTempFree(Volume, TAG_EXT_VOLUME);
        return NULL;
    }
    Status = ArcRead(DeviceId, &SuperBlock, sizeof(SuperBlock), &Count);
    if (Status != ESUCCESS || Count != sizeof(SuperBlock))
    {
        FrLdrTempFree(Volume, TAG_EXT_VOLUME);
        return NULL;
    }
 
    /* Check if SuperBlock is valid. If yes, return Ext function table. */
    if (SuperBlock.Magic != EXT_SUPERBLOCK_MAGIC)
    {
        FrLdrTempFree(Volume, TAG_EXT_VOLUME);
        return NULL;
    }
 
    Volume->DeviceId = DeviceId;
 
    /* Really open the volume */
    if (!ExtOpenVolume(Volume))
    {
        FrLdrTempFree(Volume, TAG_EXT_VOLUME);
        return NULL;
    }
 
    /* Remember EXT volume information */
    ExtVolumes[DeviceId] = Volume;
 
    /* Return success */
    TRACE("ExtMount(%lu) success\n", DeviceId);
    return &ExtFuncTable;
}

Classes

Macros

Typedefs

Functions