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[EXT2] Upgrade to 0.69

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CORE-13980
This commit is contained in:
Pierre Schweitzer 2017-11-12 10:47:29 +01:00
parent 18dee7a392
commit a1d7e9936d
No known key found for this signature in database
GPG key ID: 7545556C3D585B0B
24 changed files with 3032 additions and 304 deletions
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2
drivers/filesystems/ext2/CMakeLists.txt
View file

@ -11,6 +11,7 @@ list(APPEND SOURCE
src/ext4/ext4_bh.c
src/ext4/ext4_extents.c
src/ext4/ext4_jbd2.c
src/ext4/ext4_xattr.c
src/ext4/extents.c
src/jbd/recovery.c
src/jbd/replay.c
@ -66,6 +67,7 @@ list(APPEND SOURCE
src/devctl.c
src/dirctl.c
src/dispatch.c
src/ea.c
src/except.c
src/fastio.c
src/fileinfo.c

63
drivers/filesystems/ext2/inc/ext2fs.h
View file

@ -47,7 +47,7 @@
/* STRUCTS & CONSTS******************************************************/
#define EXT2FSD_VERSION "0.68"
#define EXT2FSD_VERSION "0.69"
/* WDK DEFINITIONS ******************************************************/
@ -720,7 +720,7 @@ typedef struct _EXT2_VCB {
// Sector size in bits
ULONG SectorBits;
// Aligned size (Page or Block)
// Minimal i/o size: min(PageSize, BlockSize)
ULONGLONG IoUnitSize;
// Bits of aligned size
@ -783,6 +783,7 @@ typedef struct _EXT2_VCB {
#define VCB_BEING_CLOSED 0x00000020
#define VCB_USER_IDS 0x00000040 /* uid/gid specified by user */
#define VCB_USER_EIDS 0x00000080 /* euid/egid specified by user */
#define VCB_GD_LOADED 0x00000100 /* group desc loaded */
#define VCB_BEING_DROPPED 0x00002000
#define VCB_FORCE_WRITING 0x00004000
@ -929,6 +930,8 @@ struct _EXT2_MCB {
// List Link to Vcb->McbList
LIST_ENTRY Link;
struct inode Inode;
struct dentry *de;
};
@ -1006,6 +1009,9 @@ typedef struct _EXT2_CCB {
/* Open handle control block */
struct file filp;
/* The EA index we are on */
ULONG EaIndex;
} EXT2_CCB, *PEXT2_CCB;
//
@ -1116,6 +1122,10 @@ typedef struct _EXT2_EXTENT {
#define FSCTL_GET_RETRIEVAL_POINTER_BASE CTL_CODE(FILE_DEVICE_FILE_SYSTEM, 141, METHOD_BUFFERED, FILE_ANY_ACCESS) // RETRIEVAL_POINTER_BASE
#endif
#ifndef FILE_SUPPORTS_EXTENDED_ATTRIBUTES
#define FILE_SUPPORTS_EXTENDED_ATTRIBUTES 0x00800000
#endif
//
// The following macro is used to determine if an FSD thread can block
// for I/O or wait for a resource. It returns TRUE if the thread can
@ -1605,6 +1615,26 @@ Ext2BuildRequest (
IN PIRP Irp
);
//
// ea.c
//
NTSTATUS
Ext2QueryEa(
IN PEXT2_IRP_CONTEXT IrpContext
);
BOOLEAN
Ext2IsEaNameValid(
IN OEM_STRING Name
);
NTSTATUS
Ext2SetEa(
IN PEXT2_IRP_CONTEXT IrpContext
);
//
// Except.c
//
@ -1765,15 +1795,24 @@ Ext2RefreshSuper(
IN PEXT2_VCB Vcb
);
BOOLEAN
Ext2LoadGroupBH(IN PEXT2_VCB Vcb);
BOOLEAN
Ext2LoadGroup(IN PEXT2_VCB Vcb);
VOID
Ext2DropGroupBH(IN PEXT2_VCB Vcb);
VOID
Ext2PutGroup(IN PEXT2_VCB Vcb);
VOID
Ext2DropBH(IN PEXT2_VCB Vcb);
NTSTATUS
Ext2FlushVcb(IN PEXT2_VCB Vcb);
BOOLEAN
Ext2SaveGroup(
IN PEXT2_IRP_CONTEXT IrpContext,
@ -1814,6 +1853,17 @@ Ext2SaveInode (
IN struct inode *Inode
);
BOOLEAN
Ext2LoadInodeXattr(IN PEXT2_VCB Vcb,
IN struct inode *Inode,
IN PEXT2_INODE InodeXattr);
BOOLEAN
Ext2SaveInodeXattr(IN PEXT2_IRP_CONTEXT IrpContext,
IN PEXT2_VCB Vcb,
IN struct inode *Inode,
IN PEXT2_INODE InodeXattr);
BOOLEAN
Ext2LoadBlock (
IN PEXT2_VCB Vcb,
@ -1829,6 +1879,15 @@ Ext2SaveBlock (
IN PVOID Buf
);
BOOLEAN
Ext2LoadBuffer(
IN PEXT2_IRP_CONTEXT IrpContext,
IN PEXT2_VCB Vcb,
IN LONGLONG Offset,
IN ULONG Size,
IN PVOID Buf
);
BOOLEAN
Ext2ZeroBuffer(
IN PEXT2_IRP_CONTEXT IrpContext,

2
drivers/filesystems/ext2/inc/linux/errno.h
View file

@ -61,7 +61,9 @@
#define EBFONT 59 /* Bad font file format */
#define ENOSTR 60 /* Device not a stream */
#endif
#define ENODATA 61 /* No data available */
#ifndef __REACTOS__
#define ETIME 62 /* Timer expired */
#define ENOSR 63 /* Out of streams resources */
#define ENONET 64 /* Machine is not on the network */

205
drivers/filesystems/ext2/inc/linux/ext4_xattr.h Normal file
View file

@ -0,0 +1,205 @@
/*
* Copyright (c) 2015 Grzegorz Kostka (kostka.grzegorz@gmail.com)
* Copyright (c) 2015 Kaho Ng (ngkaho1234@gmail.com)
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* - The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/** @addtogroup lwext4
* @{
*/
/**
* @file ext4_xattr.h
* @brief Extended Attribute manipulation.
*/
#ifndef EXT4_XATTR_H_
#define EXT4_XATTR_H_
#include <ext2fs.h>
#include <linux/rbtree.h>
/* Extended Attribute(EA) */
/* Magic value in attribute blocks */
#define EXT4_XATTR_MAGIC 0xEA020000
/* Maximum number of references to one attribute block */
#define EXT4_XATTR_REFCOUNT_MAX 1024
/* Name indexes */
#define EXT4_XATTR_INDEX_USER 1
#define EXT4_XATTR_INDEX_POSIX_ACL_ACCESS 2
#define EXT4_XATTR_INDEX_POSIX_ACL_DEFAULT 3
#define EXT4_XATTR_INDEX_TRUSTED 4
#define EXT4_XATTR_INDEX_LUSTRE 5
#define EXT4_XATTR_INDEX_SECURITY 6
#define EXT4_XATTR_INDEX_SYSTEM 7
#define EXT4_XATTR_INDEX_RICHACL 8
#define EXT4_XATTR_INDEX_ENCRYPTION 9
#pragma pack(push, 1)
struct ext4_xattr_header {
__le32 h_magic; /* magic number for identification */
__le32 h_refcount; /* reference count */
__le32 h_blocks; /* number of disk blocks used */
__le32 h_hash; /* hash value of all attributes */
__le32 h_checksum; /* crc32c(uuid+id+xattrblock) */
/* id = inum if refcount=1, blknum otherwise */
__le32 h_reserved[3]; /* zero right now */
};
struct ext4_xattr_ibody_header {
__le32 h_magic; /* magic number for identification */
};
struct ext4_xattr_entry {
__u8 e_name_len; /* length of name */
__u8 e_name_index; /* attribute name index */
__le16 e_value_offs; /* offset in disk block of value */
__le32 e_value_block; /* disk block attribute is stored on (n/i) */
__le32 e_value_size; /* size of attribute value */
__le32 e_hash; /* hash value of name and value */
};
#pragma pack(pop)
#define EXT4_GOOD_OLD_INODE_SIZE EXT2_GOOD_OLD_INODE_SIZE
#define EXT4_XATTR_PAD_BITS 2
#define EXT4_XATTR_PAD (1<<EXT4_XATTR_PAD_BITS)
#define EXT4_XATTR_ROUND (EXT4_XATTR_PAD-1)
#define EXT4_XATTR_LEN(name_len) \
(((name_len) + EXT4_XATTR_ROUND + \
sizeof(struct ext4_xattr_entry)) & ~EXT4_XATTR_ROUND)
#define EXT4_XATTR_NEXT(entry) \
((struct ext4_xattr_entry *)( \
(char *)(entry) + EXT4_XATTR_LEN((entry)->e_name_len)))
#define EXT4_XATTR_SIZE(size) \
(((size) + EXT4_XATTR_ROUND) & ~EXT4_XATTR_ROUND)
#define EXT4_XATTR_NAME(entry) \
((char *)((entry) + 1))
#define EXT4_XATTR_IHDR(raw_inode) \
((struct ext4_xattr_ibody_header *) \
((char *)raw_inode + \
EXT4_GOOD_OLD_INODE_SIZE + \
(raw_inode)->i_extra_isize))
#define EXT4_XATTR_IFIRST(hdr) \
((struct ext4_xattr_entry *)((hdr)+1))
#define EXT4_XATTR_BHDR(block) \
((struct ext4_xattr_header *)((block)->b_data))
#define EXT4_XATTR_ENTRY(ptr) \
((struct ext4_xattr_entry *)(ptr))
#define EXT4_XATTR_BFIRST(block) \
EXT4_XATTR_ENTRY(EXT4_XATTR_BHDR(block)+1)
#define EXT4_XATTR_IS_LAST_ENTRY(entry) \
(*(__le32 *)(entry) == 0)
#define EXT4_ZERO_XATTR_VALUE ((void *)-1)
struct ext4_xattr_item {
/* This attribute should be stored in inode body */
BOOL in_inode;
BOOL is_data;
__u8 name_index;
char *name;
size_t name_len;
void *data;
size_t data_size;
struct rb_node node;
struct list_head list_node;
};
struct ext4_xattr_ref {
PEXT2_IRP_CONTEXT IrpContext;
BOOL block_loaded;
struct buffer_head *block_bh;
PEXT2_MCB inode_ref;
PEXT2_INODE OnDiskInode;
BOOL IsOnDiskInodeDirty;
BOOL dirty;
size_t ea_size;
size_t inode_size_rem;
size_t block_size_rem;
PEXT2_VCB fs;
void *iter_arg;
struct ext4_xattr_item *iter_from;
struct rb_root root;
struct list_head ordered_list;
};
#define EXT4_XATTR_ITERATE_CONT 0
#define EXT4_XATTR_ITERATE_STOP 1
#define EXT4_XATTR_ITERATE_PAUSE 2
int ext4_fs_get_xattr_ref(PEXT2_IRP_CONTEXT IrpContext, PEXT2_VCB fs, PEXT2_MCB inode_ref,
struct ext4_xattr_ref *ref);
int ext4_fs_put_xattr_ref(struct ext4_xattr_ref *ref);
int ext4_fs_set_xattr(struct ext4_xattr_ref *ref, __u8 name_index,
const char *name, size_t name_len, const void *data,
size_t data_size, BOOL replace);
int ext4_fs_set_xattr_ordered(struct ext4_xattr_ref *ref, __u8 name_index,
const char *name, size_t name_len, const void *data,
size_t data_size);
int ext4_fs_remove_xattr(struct ext4_xattr_ref *ref, __u8 name_index,
const char *name, size_t name_len);
int ext4_fs_get_xattr(struct ext4_xattr_ref *ref, __u8 name_index,
const char *name, size_t name_len, void *buf,
size_t buf_size, size_t *data_size);
void ext4_fs_xattr_iterate(struct ext4_xattr_ref *ref,
int(*iter)(struct ext4_xattr_ref *ref,
struct ext4_xattr_item *item,
BOOL is_last));
void ext4_fs_xattr_iterate_reset(struct ext4_xattr_ref *ref);
const char *ext4_extract_xattr_name(const char *full_name, size_t full_name_len,
__u8 *name_index, size_t *name_len,
BOOL *found);
const char *ext4_get_xattr_name_prefix(__u8 name_index,
size_t *ret_prefix_len);
void ext4_xattr_purge_items(struct ext4_xattr_ref *xattr_ref);
#endif
/**
* @}
*/

19
drivers/filesystems/ext2/inc/linux/fs.h
View file

@ -75,25 +75,6 @@ struct super_block {
void *s_fs_info;
};
struct xattr_entry {
char xe_name_index;
char *xe_name;
char xe_name_len;
char *xe_value;
int xe_value_size;
int xe_value_buf_size;
struct rb_node xe_node;
};
#define XATTR_FLAG_DIRTY 0x1
#define XATTR_FLAG_LOADED 0x2
struct xattr_handle {
int xh_flags;
int xh_total_size;
struct rb_root xh_root;
};
struct inode {
__u32 i_ino; /* inode number */
loff_t i_size; /* size */

2
drivers/filesystems/ext2/inc/linux/module.h
View file

@ -864,6 +864,8 @@ struct buffer_head *extents_bread(struct super_block *sb, sector_t block);
struct buffer_head *extents_bwrite(struct super_block *sb, sector_t block);
void extents_mark_buffer_dirty(struct buffer_head *bh);
void extents_brelse(struct buffer_head *bh);
void extents_bforget(struct buffer_head *bh);
void buffer_head_remove(struct block_device *bdev, struct buffer_head *bh);
extern int buffer_heads_over_limit;

190
drivers/filesystems/ext2/src/create.c
View file

@ -10,6 +10,7 @@
/* INCLUDES *****************************************************************/
#include "ext2fs.h"
#include <linux/ext4_xattr.h>
/* GLOBALS *****************************************************************/
@ -350,8 +351,9 @@ Ext2LookupFile (
}
/* is a directory expected ? */
if (FullName->Buffer[End - 1] == L'\\') {
while (FullName->Buffer[End - 1] == L'\\') {
bDirectory = TRUE;
End -= 1;
}
/* loop with every sub name */
@ -674,6 +676,155 @@ errorout:
return Ext2WinntError(rc);
}
//
// Any call to this routine must have Fcb's MainResource and FcbLock acquired.
//
NTSTATUS
Ext2OverwriteEa(
PEXT2_IRP_CONTEXT IrpContext,
PEXT2_VCB Vcb,
PEXT2_FCB Fcb,
PIO_STATUS_BLOCK Iosb
)
{
PEXT2_MCB Mcb = NULL;
PIRP Irp;
PIO_STACK_LOCATION IrpSp;
struct ext4_xattr_ref xattr_ref;
BOOLEAN XattrRefAcquired = FALSE;
NTSTATUS Status = STATUS_UNSUCCESSFUL;
PFILE_FULL_EA_INFORMATION FullEa;
PCHAR EaBuffer;
ULONG EaBufferLength;
_SEH2_TRY {
Irp = IrpContext->Irp;
IrpSp = IoGetCurrentIrpStackLocation(Irp);
Mcb = Fcb->Mcb;
EaBuffer = Irp->AssociatedIrp.SystemBuffer;
EaBufferLength = IrpSp->Parameters.Create.EaLength;
if (!Mcb)
_SEH2_LEAVE;
//
// Return peacefully if there is no EaBuffer provided.
//
if (!EaBuffer) {
Status = STATUS_SUCCESS;
_SEH2_LEAVE;
}
//
// If the caller specifies an EaBuffer, but has no knowledge about Ea,
// we reject the request.
//
if (EaBuffer != NULL &&
FlagOn(IrpSp->Parameters.Create.Options, FILE_NO_EA_KNOWLEDGE)) {
Status = STATUS_ACCESS_DENIED;
_SEH2_LEAVE;
}
//
// Check Ea Buffer validity.
//
Status = IoCheckEaBufferValidity((PFILE_FULL_EA_INFORMATION)EaBuffer,
EaBufferLength, (PULONG)&Iosb->Information);
if (!NT_SUCCESS(Status))
_SEH2_LEAVE;
Status = Ext2WinntError(ext4_fs_get_xattr_ref(IrpContext, Vcb, Fcb->Mcb, &xattr_ref));
if (!NT_SUCCESS(Status)) {
DbgPrint("ext4_fs_get_xattr_ref() failed!\n");
_SEH2_LEAVE;
}
XattrRefAcquired = TRUE;
//
// Remove all existing EA entries.
//
ext4_xattr_purge_items(&xattr_ref);
xattr_ref.dirty = TRUE;
Status = STATUS_SUCCESS;
// Iterate the whole EA buffer to do inspection
for (FullEa = (PFILE_FULL_EA_INFORMATION)EaBuffer;
FullEa < (PFILE_FULL_EA_INFORMATION)&EaBuffer[EaBufferLength];
FullEa = (PFILE_FULL_EA_INFORMATION)(FullEa->NextEntryOffset == 0 ?
&EaBuffer[EaBufferLength] :
(PCHAR)FullEa + FullEa->NextEntryOffset)) {
OEM_STRING EaName;
EaName.MaximumLength = EaName.Length = FullEa->EaNameLength;
EaName.Buffer = &FullEa->EaName[0];
// Check if EA's name is valid
if (!Ext2IsEaNameValid(EaName)) {
Status = STATUS_INVALID_EA_NAME;
_SEH2_LEAVE;
}
}
// Now add EA entries to the inode
for (FullEa = (PFILE_FULL_EA_INFORMATION)EaBuffer;
FullEa < (PFILE_FULL_EA_INFORMATION)&EaBuffer[EaBufferLength];
FullEa = (PFILE_FULL_EA_INFORMATION)(FullEa->NextEntryOffset == 0 ?
&EaBuffer[EaBufferLength] :
(PCHAR)FullEa + FullEa->NextEntryOffset)) {
int ret;
OEM_STRING EaName;
EaName.MaximumLength = EaName.Length = FullEa->EaNameLength;
EaName.Buffer = &FullEa->EaName[0];
Status = Ext2WinntError(ret =
ext4_fs_set_xattr(&xattr_ref,
EXT4_XATTR_INDEX_USER,
EaName.Buffer,
EaName.Length,
&FullEa->EaName[0] + FullEa->EaNameLength + 1,
FullEa->EaValueLength,
TRUE));
if (!NT_SUCCESS(Status) && ret != -ENODATA)
_SEH2_LEAVE;
if (ret == -ENODATA) {
Status = Ext2WinntError(
ext4_fs_set_xattr(&xattr_ref,
EXT4_XATTR_INDEX_USER,
EaName.Buffer,
EaName.Length,
&FullEa->EaName[0] + FullEa->EaNameLength + 1,
FullEa->EaValueLength,
FALSE));
if (!NT_SUCCESS(Status))
_SEH2_LEAVE;
}
}
}
_SEH2_FINALLY {
if (XattrRefAcquired) {
if (!NT_SUCCESS(Status)) {
xattr_ref.dirty = FALSE;
ext4_fs_put_xattr_ref(&xattr_ref);
} else {
Status = Ext2WinntError(ext4_fs_put_xattr_ref(&xattr_ref));
}
}
} _SEH2_END;
return Status;
}
NTSTATUS
Ext2CreateFile(
PEXT2_IRP_CONTEXT IrpContext,
@ -876,13 +1027,17 @@ McbExisting:
PathName = FileName;
Mcb = NULL;
if (PathName.Buffer[PathName.Length/2 - 1] == L'\\') {
if (DirectoryFile) {
PathName.Length -=2;
PathName.Buffer[PathName.Length/2] = 0;
} else {
DirectoryFile = TRUE;
}
/* here we've found the target file, but it's not matched. */
if (STATUS_OBJECT_NAME_NOT_FOUND != Status &&
STATUS_NO_SUCH_FILE != Status) {
_SEH2_LEAVE;
}
while (PathName.Length > 0 &&
PathName.Buffer[PathName.Length/2 - 1] == L'\\') {
DirectoryFile = TRUE;
PathName.Length -= 2;
PathName.Buffer[PathName.Length / 2] = 0;
}
if (!ParentMcb) {
@ -922,7 +1077,8 @@ Dissecting:
/* quit name resolving loop */
if (!NT_SUCCESS(Status)) {
if (Status == STATUS_NO_SUCH_FILE && RemainName.Length != 0) {
if (Status == STATUS_NO_SUCH_FILE ||
Status == STATUS_OBJECT_NAME_NOT_FOUND) {
Status = STATUS_OBJECT_PATH_NOT_FOUND;
}
_SEH2_LEAVE;
@ -1296,6 +1452,12 @@ Openit:
// This file is just created.
//
Status = Ext2OverwriteEa(IrpContext, Vcb, Fcb, &Irp->IoStatus);
if (!NT_SUCCESS(Status)) {
Ext2DeleteFile(IrpContext, Vcb, Fcb, Mcb);
_SEH2_LEAVE;
}
if (DirectoryFile) {
Status = Ext2AddDotEntries(IrpContext, &ParentMcb->Inode, &Mcb->Inode);
@ -1758,7 +1920,9 @@ Ext2CreateVolume(PEXT2_IRP_CONTEXT IrpContext, PEXT2_VCB Vcb)
SetLongFlag(Vcb->Flags, VCB_VOLUME_LOCKED);
Vcb->LockFile = IrpSp->FileObject;
} else {
if (FlagOn(DesiredAccess, FILE_READ_DATA | FILE_WRITE_DATA | FILE_APPEND_DATA) ) {
if (FlagOn(IrpSp->FileObject->Flags, FO_NO_INTERMEDIATE_BUFFERING) &&
FlagOn(DesiredAccess, FILE_READ_DATA | FILE_WRITE_DATA) ) {
if (!IsVcbReadOnly(Vcb)) {
Ext2FlushFiles(IrpContext, Vcb, FALSE);
Ext2FlushVolume(IrpContext, Vcb, FALSE);
@ -1888,6 +2052,7 @@ Ext2CreateInode(
ULONG iNo;
struct inode Inode = { 0 };
struct dentry *Dentry = NULL;
struct ext3_super_block *es = EXT3_SB(&Vcb->sb)->s_es;
LARGE_INTEGER SysTime;
@ -1927,6 +2092,8 @@ Ext2CreateInode(
} else {
DbgBreak();
}
if (le16_to_cpu(es->s_want_extra_isize))
Inode.i_extra_isize = le16_to_cpu(es->s_want_extra_isize);
/* Force using extent */
if (IsFlagOn(SUPER_BLOCK->s_feature_incompat, EXT4_FEATURE_INCOMPAT_EXTENTS)) {
@ -2022,5 +2189,6 @@ Ext2SupersedeOrOverWriteFile(
Fcb->Inode->i_mtime = Ext2LinuxTime(CurrentTime);
Ext2SaveInode(IrpContext, Vcb, Fcb->Inode);
return STATUS_SUCCESS;
// See if we need to overwrite EA of the file
return Ext2OverwriteEa(IrpContext, Vcb, Fcb, &IrpContext->Irp->IoStatus);
}

6
drivers/filesystems/ext2/src/dirctl.c
View file

@ -1085,6 +1085,12 @@ Ext2NotifyChangeDirectory (
ASSERT((Ccb->Identifier.Type == EXT2CCB) &&
(Ccb->Identifier.Size == sizeof(EXT2_CCB)));
/* do nothing if target fie was deleted */
if (FlagOn(Fcb->Flags, FCB_DELETE_PENDING)) {
Status = STATUS_FILE_DELETED;
_SEH2_LEAVE;
}
if (!IsDirectory(Fcb)) {
DbgBreak();
Status = STATUS_INVALID_PARAMETER;

6
drivers/filesystems/ext2/src/dispatch.c
View file

@ -267,6 +267,12 @@ Ext2DispatchRequest (IN PEXT2_IRP_CONTEXT IrpContext)
case IRP_MJ_SHUTDOWN:
return Ext2ShutDown(IrpContext);
case IRP_MJ_QUERY_EA:
return Ext2QueryEa(IrpContext);
case IRP_MJ_SET_EA:
return Ext2SetEa(IrpContext);
#if (_WIN32_WINNT >= 0x0500)
case IRP_MJ_PNP:
return Ext2Pnp(IrpContext);

604
drivers/filesystems/ext2/src/ea.c Normal file
View file

@ -0,0 +1,604 @@
/*
* COPYRIGHT: See COPYRIGHT.TXT
* PROJECT: Ext2 File System Driver for Windows >= NT
* FILE: ea.c
* PROGRAMMER: Matt Wu <mattwu@163.com> Kaho Ng <ngkaho1234@gmail.com>
* HOMEPAGE: http://www.ext2fsd.com
* UPDATE HISTORY:
*/
/* INCLUDES *****************************************************************/
#include "ext2fs.h"
#include <linux/ext4_xattr.h>
#ifdef ALLOC_PRAGMA
#pragma alloc_text(PAGE, Ext2QueryEa)
#pragma alloc_text(PAGE, Ext2SetEa)
#pragma alloc_text(PAGE, Ext2IsEaNameValid)
#endif
// Ea iterator
struct EaIterator {
// Return only an entry
BOOLEAN ReturnSingleEntry;
// Is the buffer overflowing?
BOOL OverFlow;
// FILE_FULL_EA_INFORMATION output buffer
PFILE_FULL_EA_INFORMATION FullEa;
PFILE_FULL_EA_INFORMATION LastFullEa;
// UserBuffer's size
ULONG UserBufferLength;
// Remaining UserBuffer's size
ULONG RemainingUserBufferLength;
// Start scanning from this EA
ULONG EaIndex;
// Next EA index returned by Ext2IterateAllEa
ULONG EaIndexCounter;
};
static int Ext2IterateAllEa(struct ext4_xattr_ref *xattr_ref, struct ext4_xattr_item *item, BOOL is_last)
{
struct EaIterator *pEaIterator = xattr_ref->iter_arg;
ULONG EaEntrySize = 4 + 1 + 1 + 2 + item->name_len + 1 + item->data_size;
ASSERT(pEaIterator);
if (!is_last && !pEaIterator->ReturnSingleEntry)
EaEntrySize = ALIGN_UP(EaEntrySize, ULONG);
// Start iteration from index specified
if (pEaIterator->EaIndexCounter < pEaIterator->EaIndex) {
pEaIterator->EaIndexCounter++;
return EXT4_XATTR_ITERATE_CONT;
}
pEaIterator->EaIndexCounter++;
if (EaEntrySize > pEaIterator->RemainingUserBufferLength) {
pEaIterator->OverFlow = TRUE;
return EXT4_XATTR_ITERATE_STOP;
}
pEaIterator->FullEa->NextEntryOffset = 0;
pEaIterator->FullEa->Flags = 0;
pEaIterator->FullEa->EaNameLength = (UCHAR)item->name_len;
pEaIterator->FullEa->EaValueLength = (USHORT)item->data_size;
RtlCopyMemory(&pEaIterator->FullEa->EaName[0],
item->name,
item->name_len);
RtlCopyMemory(&pEaIterator->FullEa->EaName[0] + item->name_len + 1,
item->data,
item->data_size);
// Link FullEa and LastFullEa together
if (pEaIterator->LastFullEa) {
pEaIterator->LastFullEa->NextEntryOffset = (ULONG)
((PCHAR)pEaIterator->FullEa - (PCHAR)pEaIterator->LastFullEa);
}
pEaIterator->LastFullEa = pEaIterator->FullEa;
pEaIterator->FullEa = (PFILE_FULL_EA_INFORMATION)
((PCHAR)pEaIterator->FullEa + EaEntrySize);
pEaIterator->RemainingUserBufferLength -= EaEntrySize;
if (pEaIterator->ReturnSingleEntry)
return EXT4_XATTR_ITERATE_STOP;
return EXT4_XATTR_ITERATE_CONT;
}
NTSTATUS
Ext2QueryEa (
IN PEXT2_IRP_CONTEXT IrpContext
)
{
PIRP Irp = NULL;
PIO_STACK_LOCATION IrpSp;
PDEVICE_OBJECT DeviceObject;
PEXT2_VCB Vcb = NULL;
PEXT2_FCB Fcb = NULL;
PEXT2_CCB Ccb = NULL;
PEXT2_MCB Mcb = NULL;
PUCHAR UserEaList;
ULONG UserEaListLength;
ULONG UserEaIndex;
BOOLEAN RestartScan;
BOOLEAN ReturnSingleEntry;
BOOLEAN IndexSpecified;
BOOLEAN MainResourceAcquired = FALSE;
BOOLEAN XattrRefAcquired = FALSE;
NTSTATUS Status = STATUS_UNSUCCESSFUL;
struct ext4_xattr_ref xattr_ref;
PCHAR UserBuffer;
ULONG UserBufferLength = 0;
ULONG RemainingUserBufferLength = 0;
PFILE_FULL_EA_INFORMATION FullEa, LastFullEa = NULL;
_SEH2_TRY {
Ccb = IrpContext->Ccb;
ASSERT(Ccb != NULL);
ASSERT((Ccb->Identifier.Type == EXT2CCB) &&
(Ccb->Identifier.Size == sizeof(EXT2_CCB)));
DeviceObject = IrpContext->DeviceObject;
Vcb = (PEXT2_VCB)DeviceObject->DeviceExtension;
Fcb = IrpContext->Fcb;
Mcb = Fcb->Mcb;
Irp = IrpContext->Irp;
IrpSp = IoGetCurrentIrpStackLocation(Irp);
Irp->IoStatus.Information = 0;
//
// Receive input parameter from caller
//
UserBuffer = Ext2GetUserBuffer(Irp);
if (!UserBuffer) {
Status = STATUS_INSUFFICIENT_RESOURCES;
_SEH2_LEAVE;
}
UserBufferLength = IrpSp->Parameters.QueryEa.Length;
RemainingUserBufferLength = UserBufferLength;
UserEaList = IrpSp->Parameters.QueryEa.EaList;
UserEaListLength = IrpSp->Parameters.QueryEa.EaListLength;
UserEaIndex = IrpSp->Parameters.QueryEa.EaIndex;
RestartScan = BooleanFlagOn(IrpSp->Flags, SL_RESTART_SCAN);
ReturnSingleEntry = BooleanFlagOn(IrpSp->Flags, SL_RETURN_SINGLE_ENTRY);
IndexSpecified = BooleanFlagOn(IrpSp->Flags, SL_INDEX_SPECIFIED);
if (!Mcb)
_SEH2_LEAVE;
//
// We do not allow multiple instance gaining EA access to the same file
//
if (!ExAcquireResourceExclusiveLite(
&Fcb->MainResource,
IsFlagOn(IrpContext->Flags, IRP_CONTEXT_FLAG_WAIT))) {
Status = STATUS_PENDING;
_SEH2_LEAVE;
}
MainResourceAcquired = TRUE;
Status = Ext2WinntError(ext4_fs_get_xattr_ref(IrpContext, Vcb, Fcb->Mcb, &xattr_ref));
if (!NT_SUCCESS(Status)) {
DbgPrint("ext4_fs_get_xattr_ref() failed!\n");
_SEH2_LEAVE;
}
FullEa = (PFILE_FULL_EA_INFORMATION)UserBuffer;
XattrRefAcquired = TRUE;
if (RemainingUserBufferLength)
RtlZeroMemory(FullEa, RemainingUserBufferLength);
if (UserEaList != NULL) {
int i = 0;
PFILE_GET_EA_INFORMATION GetEa;
for (GetEa = (PFILE_GET_EA_INFORMATION)&UserEaList[0];
GetEa < (PFILE_GET_EA_INFORMATION)((PUCHAR)UserEaList
+ UserEaListLength);
GetEa = (GetEa->NextEntryOffset == 0
? (PFILE_GET_EA_INFORMATION)MAXUINT_PTR
: (PFILE_GET_EA_INFORMATION)((PUCHAR)GetEa
+ GetEa->NextEntryOffset))) {
size_t ItemSize;
OEM_STRING Str;
ULONG EaEntrySize;
BOOL is_last = !GetEa->NextEntryOffset;
Str.MaximumLength = Str.Length = GetEa->EaNameLength;
Str.Buffer = &GetEa->EaName[0];
//
// At the moment we only need to know whether the item exists
// and its size.
//
Status = Ext2WinntError(ext4_fs_get_xattr(&xattr_ref,
EXT4_XATTR_INDEX_USER,
Str.Buffer,
Str.Length,
NULL,
0,
&ItemSize));
if (!NT_SUCCESS(Status))
continue;
//
// We were not able to locate the name therefore we must
// dummy up a entry for the query. The needed Ea size is
// the size of the name + 4 (next entry offset) + 1 (flags)
// + 1 (name length) + 2 (value length) + the name length +
// 1 (null byte) + Data Size.
//
EaEntrySize = 4 + 1 + 1 + 2 + GetEa->EaNameLength + 1 + ItemSize;
if (!is_last)
EaEntrySize = ALIGN_UP(EaEntrySize, ULONG);
if (EaEntrySize > RemainingUserBufferLength) {
Status = i ? STATUS_BUFFER_OVERFLOW : STATUS_BUFFER_TOO_SMALL;
_SEH2_LEAVE;
}
FullEa->NextEntryOffset = 0;
FullEa->Flags = 0;
FullEa->EaNameLength = GetEa->EaNameLength;
FullEa->EaValueLength = (USHORT)ItemSize;
RtlCopyMemory(&FullEa->EaName[0],
&GetEa->EaName[0],
GetEa->EaNameLength);
//
// This query must succeed, or is guarenteed to succeed
// since we are only looking up
// an EA entry in a in-memory tree structure.
// Otherwise that means someone might be operating on
// the xattr_ref without acquiring Inode lock.
//
ASSERT(NT_SUCCESS(Ext2WinntError(
ext4_fs_get_xattr(&xattr_ref,
EXT4_XATTR_INDEX_USER,
Str.Buffer,
Str.Length,
&FullEa->EaName[0] + FullEa->EaNameLength + 1,
ItemSize,
&ItemSize
))));
FullEa->EaValueLength = (USHORT)ItemSize;
// Link FullEa and LastFullEa together
if (LastFullEa)
LastFullEa->NextEntryOffset = (ULONG)((PCHAR)FullEa -
(PCHAR)LastFullEa);
LastFullEa = FullEa;
FullEa = (PFILE_FULL_EA_INFORMATION)
((PCHAR)FullEa + EaEntrySize);
RemainingUserBufferLength -= EaEntrySize;
i++;
}
} else if (IndexSpecified) {
struct EaIterator EaIterator;
//
// The user supplied an index into the Ea list.
//
if (RemainingUserBufferLength)
RtlZeroMemory(FullEa, RemainingUserBufferLength);
EaIterator.OverFlow = FALSE;
EaIterator.RemainingUserBufferLength = UserBufferLength;
// In this case, return only an entry.
EaIterator.ReturnSingleEntry = TRUE;
EaIterator.FullEa = (PFILE_FULL_EA_INFORMATION)UserBuffer;
EaIterator.LastFullEa = NULL;
EaIterator.UserBufferLength = UserBufferLength;
EaIterator.EaIndex = UserEaIndex;
EaIterator.EaIndexCounter = 1;
xattr_ref.iter_arg = &EaIterator;
ext4_fs_xattr_iterate(&xattr_ref, Ext2IterateAllEa);
RemainingUserBufferLength = EaIterator.RemainingUserBufferLength;
Status = STATUS_SUCCESS;
// It seems that the item isn't found
if (RemainingUserBufferLength == UserBufferLength)
Status = STATUS_OBJECTID_NOT_FOUND;
if (EaIterator.OverFlow) {
if (RemainingUserBufferLength == UserBufferLength)
Status = STATUS_BUFFER_TOO_SMALL;
else
Status = STATUS_BUFFER_OVERFLOW;
}
} else {
struct EaIterator EaIterator;
//
// Else perform a simple scan, taking into account the restart
// flag and the position of the next Ea stored in the Ccb.
//
if (RestartScan)
Ccb->EaIndex = 1;
if (RemainingUserBufferLength)
RtlZeroMemory(FullEa, RemainingUserBufferLength);
EaIterator.OverFlow = FALSE;
EaIterator.RemainingUserBufferLength = UserBufferLength;
EaIterator.ReturnSingleEntry = ReturnSingleEntry;
EaIterator.FullEa = (PFILE_FULL_EA_INFORMATION)UserBuffer;
EaIterator.LastFullEa = NULL;
EaIterator.UserBufferLength = UserBufferLength;
EaIterator.EaIndex = Ccb->EaIndex;
EaIterator.EaIndexCounter = 1;
xattr_ref.iter_arg = &EaIterator;
ext4_fs_xattr_iterate(&xattr_ref, Ext2IterateAllEa);
RemainingUserBufferLength = EaIterator.RemainingUserBufferLength;
if (Ccb->EaIndex < EaIterator.EaIndexCounter)
Ccb->EaIndex = EaIterator.EaIndexCounter;
Status = STATUS_SUCCESS;
if (EaIterator.OverFlow) {
if (RemainingUserBufferLength == UserBufferLength)
Status = STATUS_BUFFER_TOO_SMALL;
else
Status = STATUS_BUFFER_OVERFLOW;
}
}
}
_SEH2_FINALLY {
if (XattrRefAcquired) {
if (!NT_SUCCESS(Status)) {
xattr_ref.dirty = FALSE;
ext4_fs_put_xattr_ref(&xattr_ref);
}
else
Status = Ext2WinntError(ext4_fs_put_xattr_ref(&xattr_ref));
}
if (MainResourceAcquired) {
ExReleaseResourceLite(&Fcb->MainResource);
}
if (NT_SUCCESS(Status)) {
Ext2NotifyReportChange(
IrpContext,
Vcb,
Mcb,
FILE_NOTIFY_CHANGE_EA,
FILE_ACTION_MODIFIED);
Irp->IoStatus.Information = UserBufferLength - RemainingUserBufferLength;
}
if (!_SEH2_AbnormalTermination()) {
if (Status == STATUS_PENDING || Status == STATUS_CANT_WAIT) {
Status = Ext2QueueRequest(IrpContext);
}
else {
Ext2CompleteIrpContext(IrpContext, Status);
}
}
} _SEH2_END;
return Status;
}
BOOLEAN
Ext2IsEaNameValid(
IN OEM_STRING Name
)
{
ULONG Index;
UCHAR Char;
//
// Empty names are not valid
//
if (Name.Length == 0)
return FALSE;
//
// Do not allow EA name longer than 255 bytes
//
if (Name.Length > 255)
return FALSE;
for (Index = 0; Index < (ULONG)Name.Length; Index += 1) {
Char = Name.Buffer[Index];
//
// Skip over and Dbcs chacters
//
if (FsRtlIsLeadDbcsCharacter(Char)) {
ASSERT(Index != (ULONG)(Name.Length - 1));
Index += 1;
continue;
}
//
// Make sure this character is legal, and if a wild card, that
// wild cards are permissible.
//
if (!FsRtlIsAnsiCharacterLegalFat(Char, FALSE))
return FALSE;
}
return TRUE;
}
NTSTATUS
Ext2SetEa (
IN PEXT2_IRP_CONTEXT IrpContext
)
{
PIRP Irp = NULL;
PIO_STACK_LOCATION IrpSp;
PDEVICE_OBJECT DeviceObject;
PEXT2_VCB Vcb = NULL;
PEXT2_FCB Fcb = NULL;
PEXT2_CCB Ccb = NULL;
PEXT2_MCB Mcb = NULL;
BOOLEAN MainResourceAcquired = FALSE;
BOOLEAN FcbLockAcquired = FALSE;
BOOLEAN XattrRefAcquired = FALSE;
NTSTATUS Status = STATUS_UNSUCCESSFUL;
struct ext4_xattr_ref xattr_ref;
PCHAR UserBuffer;
ULONG UserBufferLength;
PFILE_FULL_EA_INFORMATION FullEa;
_SEH2_TRY {
Ccb = IrpContext->Ccb;
ASSERT(Ccb != NULL);
ASSERT((Ccb->Identifier.Type == EXT2CCB) &&
(Ccb->Identifier.Size == sizeof(EXT2_CCB)));
DeviceObject = IrpContext->DeviceObject;
Vcb = (PEXT2_VCB)DeviceObject->DeviceExtension;
Fcb = IrpContext->Fcb;
Mcb = Fcb->Mcb;
Irp = IrpContext->Irp;
IrpSp = IoGetCurrentIrpStackLocation(Irp);
Irp->IoStatus.Information = 0;
//
// Receive input parameter from caller
//
UserBufferLength = IrpSp->Parameters.SetEa.Length;
UserBuffer = Irp->UserBuffer;
// Check if the EA buffer provided is valid
Status = IoCheckEaBufferValidity((PFILE_FULL_EA_INFORMATION)UserBuffer,
UserBufferLength,
(PULONG)&Irp->IoStatus.Information);
if (!NT_SUCCESS(Status))
_SEH2_LEAVE;
ExAcquireResourceExclusiveLite(&Vcb->FcbLock, TRUE);
FcbLockAcquired = TRUE;
if (!Mcb)
_SEH2_LEAVE;
//
// We do not allow multiple instance gaining EA access to the same file
//
if (!ExAcquireResourceExclusiveLite(
&Fcb->MainResource,
IsFlagOn(IrpContext->Flags, IRP_CONTEXT_FLAG_WAIT))) {
Status = STATUS_PENDING;
_SEH2_LEAVE;
}
MainResourceAcquired = TRUE;
Status = Ext2WinntError(ext4_fs_get_xattr_ref(IrpContext, Vcb, Fcb->Mcb, &xattr_ref));
if (!NT_SUCCESS(Status)) {
DbgPrint("ext4_fs_get_xattr_ref() failed!\n");
_SEH2_LEAVE;
}
XattrRefAcquired = TRUE;
//
// Remove all existing EA entries.
//
ext4_xattr_purge_items(&xattr_ref);
xattr_ref.dirty = TRUE;
Status = STATUS_SUCCESS;
// Iterate the whole EA buffer to do inspection
for (FullEa = (PFILE_FULL_EA_INFORMATION)UserBuffer;
FullEa < (PFILE_FULL_EA_INFORMATION)&UserBuffer[UserBufferLength];
FullEa = (PFILE_FULL_EA_INFORMATION)(FullEa->NextEntryOffset == 0 ?
&UserBuffer[UserBufferLength] :
(PCHAR)FullEa + FullEa->NextEntryOffset)) {
OEM_STRING EaName;
EaName.MaximumLength = EaName.Length = FullEa->EaNameLength;
EaName.Buffer = &FullEa->EaName[0];
// Check if EA's name is valid
if (!Ext2IsEaNameValid(EaName)) {
Irp->IoStatus.Information = (PCHAR)FullEa - UserBuffer;
Status = STATUS_INVALID_EA_NAME;
_SEH2_LEAVE;
}
}
// Now add EA entries to the inode
for (FullEa = (PFILE_FULL_EA_INFORMATION)UserBuffer;
FullEa < (PFILE_FULL_EA_INFORMATION)&UserBuffer[UserBufferLength];
FullEa = (PFILE_FULL_EA_INFORMATION)(FullEa->NextEntryOffset == 0 ?
&UserBuffer[UserBufferLength] :
(PCHAR)FullEa + FullEa->NextEntryOffset)) {
int ret;
OEM_STRING EaName;
EaName.MaximumLength = EaName.Length = FullEa->EaNameLength;
EaName.Buffer = &FullEa->EaName[0];
Status = Ext2WinntError(ret =
ext4_fs_set_xattr_ordered(&xattr_ref,
EXT4_XATTR_INDEX_USER,
EaName.Buffer,
EaName.Length,
&FullEa->EaName[0] + FullEa->EaNameLength + 1,
FullEa->EaValueLength));
if (!NT_SUCCESS(Status))
_SEH2_LEAVE;
}
} _SEH2_FINALLY {
if (XattrRefAcquired) {
if (!NT_SUCCESS(Status)) {
xattr_ref.dirty = FALSE;
ext4_fs_put_xattr_ref(&xattr_ref);
} else
Status = Ext2WinntError(ext4_fs_put_xattr_ref(&xattr_ref));
}
if (FcbLockAcquired) {
ExReleaseResourceLite(&Vcb->FcbLock);
FcbLockAcquired = FALSE;
}
if (MainResourceAcquired) {
ExReleaseResourceLite(&Fcb->MainResource);
}
if (NT_SUCCESS(Status)) {
Ext2NotifyReportChange(
IrpContext,
Vcb,
Mcb,
FILE_NOTIFY_CHANGE_EA,
FILE_ACTION_MODIFIED);
}
if (!_SEH2_AbnormalTermination()) {
if (Status == STATUS_PENDING || Status == STATUS_CANT_WAIT) {
Status = Ext2QueueRequest(IrpContext);
}
else {
Ext2CompleteIrpContext(IrpContext, Status);
}
}
} _SEH2_END;
return Status;
}

626
drivers/filesystems/ext2/src/ext3/generic.c
View file

@ -10,7 +10,7 @@
/* INCLUDES *****************************************************************/
#include "ext2fs.h"
#include <linux/ext4.h>
#include "linux/ext4.h"
/* GLOBALS ***************************************************************/
@ -124,6 +124,24 @@ Ext2RefreshSuper (
return TRUE;
}
VOID
Ext2DropGroupBH(IN PEXT2_VCB Vcb)
{
struct ext3_sb_info *sbi = &Vcb->sbi;
unsigned long i;
if (NULL == Vcb->sbi.s_gd) {
return;
}
for (i = 0; i < Vcb->sbi.s_gdb_count; i++) {
if (Vcb->sbi.s_gd[i].bh) {
fini_bh(&sbi->s_gd[i].bh);
Vcb->sbi.s_gd[i].bh = NULL;
}
}
}
VOID
Ext2PutGroup(IN PEXT2_VCB Vcb)
{
@ -135,13 +153,49 @@ Ext2PutGroup(IN PEXT2_VCB Vcb)
return;
}
for (i = 0; i < Vcb->sbi.s_gdb_count; i++) {
if (Vcb->sbi.s_gd[i].bh)
fini_bh(&sbi->s_gd[i].bh);
}
Ext2DropGroupBH(Vcb);
kfree(Vcb->sbi.s_gd);
Vcb->sbi.s_gd = NULL;
ClearFlag(Vcb->Flags, VCB_GD_LOADED);
}
BOOLEAN
Ext2LoadGroupBH(IN PEXT2_VCB Vcb)
{
struct super_block *sb = &Vcb->sb;
struct ext3_sb_info *sbi = &Vcb->sbi;
unsigned long i;
BOOLEAN rc = FALSE;
_SEH2_TRY {
ExAcquireResourceExclusiveLite(&Vcb->sbi.s_gd_lock, TRUE);
ASSERT (NULL != sbi->s_gd);
for (i = 0; i < sbi->s_gdb_count; i++) {
ASSERT (sbi->s_gd[i].block);
if (sbi->s_gd[i].bh)
continue;
sbi->s_gd[i].bh = sb_getblk(sb, sbi->s_gd[i].block);
if (!sbi->s_gd[i].bh) {
DEBUG(DL_ERR, ("Ext2LoadGroupBH: can't read group descriptor %d\n", i));
DbgBreak();
_SEH2_LEAVE;
}
sbi->s_gd[i].gd = (struct ext4_group_desc *)sbi->s_gd[i].bh->b_data;
}
rc = TRUE;
} _SEH2_FINALLY {
ExReleaseResourceLite(&Vcb->sbi.s_gd_lock);
} _SEH2_END;
return rc;
}
@ -177,20 +231,20 @@ Ext2LoadGroup(IN PEXT2_VCB Vcb)
DEBUG(DL_ERR, ("Ext2LoadGroup: can't locate group descriptor %d\n", i));
_SEH2_LEAVE;
}
sbi->s_gd[i].bh = sb_getblk(sb, sbi->s_gd[i].block);
if (!sbi->s_gd[i].bh) {
DEBUG(DL_ERR, ("Ext2LoadGroup: can't read group descriptor %d\n", i));
_SEH2_LEAVE;
}
sbi->s_gd[i].gd = (struct ext4_group_desc *)sbi->s_gd[i].bh->b_data;
}
if (!Ext2LoadGroupBH(Vcb)) {
DEBUG(DL_ERR, ("Ext2LoadGroup: Failed to load group descriptions !\n"));
_SEH2_LEAVE;
}
if (!ext4_check_descriptors(sb)) {
DbgBreak();
DEBUG(DL_ERR, ("Ext2LoadGroup: group descriptors corrupted!\n"));
DEBUG(DL_ERR, ("Ext2LoadGroup: group descriptors corrupted !\n"));
_SEH2_LEAVE;
}
SetFlag(Vcb->Flags, VCB_GD_LOADED);
rc = TRUE;
} _SEH2_FINALLY {
@ -204,13 +258,10 @@ Ext2LoadGroup(IN PEXT2_VCB Vcb)
return rc;
}
VOID
Ext2DropBH(IN PEXT2_VCB Vcb)
{
struct ext3_sb_info *sbi = &Vcb->sbi;
LARGE_INTEGER timeout;
unsigned long i;
/* do nothing if Vcb is not initialized yet */
if (!IsFlagOn(Vcb->Flags, VCB_INITIALIZED))
@ -222,15 +273,18 @@ Ext2DropBH(IN PEXT2_VCB Vcb)
ExAcquireResourceExclusiveLite(&Vcb->bd.bd_bh_lock, TRUE);
SetFlag(Vcb->Flags, VCB_BEING_DROPPED);
Ext2PutGroup(Vcb);
Ext2DropGroupBH(Vcb);
while (!IsListEmpty(&Vcb->bd.bd_bh_free)) {
struct buffer_head *bh;
PLIST_ENTRY l;
l = RemoveHeadList(&Vcb->bd.bd_bh_free);
bh = CONTAINING_RECORD(l, struct buffer_head, b_link);
ASSERT(0 == atomic_read(&bh->b_count));
free_buffer_head(bh);
InitializeListHead(&bh->b_link);
if (0 == atomic_read(&bh->b_count)) {
buffer_head_remove(&Vcb->bd, bh);
free_buffer_head(bh);
}
}
} _SEH2_FINALLY {
@ -240,6 +294,90 @@ Ext2DropBH(IN PEXT2_VCB Vcb)
ClearFlag(Vcb->Flags, VCB_BEING_DROPPED);
}
VOID
Ext2FlushRange(IN PEXT2_VCB Vcb, LARGE_INTEGER s, LARGE_INTEGER e)
{
ULONG len;
if (e.QuadPart <= s.QuadPart)
return;
/* loop per 2G */
while (s.QuadPart < e.QuadPart) {
if (e.QuadPart > s.QuadPart + 1024 * 1024 * 1024) {
len = 1024 * 1024 * 1024;
} else {
len = (ULONG) (e.QuadPart - s.QuadPart);
}
CcFlushCache(&Vcb->SectionObject, &s, len, NULL);
s.QuadPart += len;
}
}
NTSTATUS
Ext2FlushVcb(IN PEXT2_VCB Vcb)
{
LARGE_INTEGER s = {0}, o;
struct ext3_sb_info *sbi = &Vcb->sbi;
struct rb_node *node;
struct buffer_head *bh;
if (!IsFlagOn(Vcb->Flags, VCB_GD_LOADED)) {
CcFlushCache(&Vcb->SectionObject, NULL, 0, NULL);
goto errorout;
}
ASSERT(ExIsResourceAcquiredExclusiveLite(&Vcb->MainResource));
_SEH2_TRY {
/* acqurie gd block */
ExAcquireResourceExclusiveLite(&Vcb->sbi.s_gd_lock, TRUE);
/* acquire bd lock to avoid bh creation */
ExAcquireResourceExclusiveLite(&Vcb->bd.bd_bh_lock, TRUE);
/* drop unused bh */
Ext2DropBH(Vcb);
/* flush volume with all outstanding bh skipped */
node = rb_first(&Vcb->bd.bd_bh_root);
while (node) {
bh = container_of(node, struct buffer_head, b_rb_node);
node = rb_next(node);
o.QuadPart = bh->b_blocknr << BLOCK_BITS;
ASSERT(o.QuadPart >= s.QuadPart);
if (o.QuadPart == s.QuadPart) {
s.QuadPart = s.QuadPart + bh->b_size;
continue;
}
if (o.QuadPart > s.QuadPart) {
Ext2FlushRange(Vcb, s, o);
s.QuadPart = (bh->b_blocknr << BLOCK_BITS) + bh->b_size;
continue;
}
}
o = Vcb->PartitionInformation.PartitionLength;
Ext2FlushRange(Vcb, s, o);
} _SEH2_FINALLY {
ExReleaseResourceLite(&Vcb->bd.bd_bh_lock);
ExReleaseResourceLite(&Vcb->sbi.s_gd_lock);
} _SEH2_END;
errorout:
return STATUS_SUCCESS;
}
BOOLEAN
Ext2SaveGroup(
IN PEXT2_IRP_CONTEXT IrpContext,
@ -326,8 +464,12 @@ void Ext2DecodeInode(struct inode *dst, struct ext3_inode *src)
dst->i_mtime = src->i_mtime;
dst->i_dtime = src->i_dtime;
dst->i_blocks = ext3_inode_blocks(src, dst);
dst->i_extra_isize = src->i_extra_isize;
memcpy(&dst->i_block[0], &src->i_block[0], sizeof(__u32) * 15);
if (EXT3_HAS_RO_COMPAT_FEATURE(dst->i_sb,
EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE))
dst->i_extra_isize = src->i_extra_isize;
else
dst->i_extra_isize = 0;
}
void Ext2EncodeInode(struct ext3_inode *dst, struct inode *src)
@ -352,6 +494,9 @@ void Ext2EncodeInode(struct ext3_inode *dst, struct inode *src)
ASSERT(src->i_sb);
ext3_inode_blocks_set(dst, src);
memcpy(&dst->i_block[0], &src->i_block[0], sizeof(__u32) * 15);
if (EXT3_HAS_RO_COMPAT_FEATURE(src->i_sb,
EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE))
dst->i_extra_isize = src->i_extra_isize;
}
@ -359,27 +504,15 @@ BOOLEAN
Ext2LoadInode (IN PEXT2_VCB Vcb,
IN struct inode *Inode)
{
struct ext3_inode ext3i;
struct ext3_inode ext3i = {0};
LONGLONG offset;
IO_STATUS_BLOCK IoStatus;
LONGLONG Offset;
if (!Ext2GetInodeLba(Vcb, Inode->i_ino, &Offset)) {
DEBUG(DL_ERR, ( "Ext2LoadInode: error get inode(%xh)'s addr.\n", Inode->i_ino));
if (!Ext2GetInodeLba(Vcb, Inode->i_ino, &offset)) {
DEBUG(DL_ERR, ("Ext2LoadInode: failed inode %u.\n", Inode->i_ino));
return FALSE;
}
if (!CcCopyRead(
Vcb->Volume,
(PLARGE_INTEGER)&Offset,
sizeof(struct ext3_inode),
PIN_WAIT,
(PVOID)&ext3i,
&IoStatus )) {
return FALSE;
}
if (!NT_SUCCESS(IoStatus.Status)) {
if (!Ext2LoadBuffer(NULL, Vcb, offset, sizeof(ext3i), &ext3i)) {
return FALSE;
}
@ -400,7 +533,7 @@ Ext2ClearInode (
rc = Ext2GetInodeLba(Vcb, Inode, &Offset);
if (!rc) {
DEBUG(DL_ERR, ( "Ext2SaveInode: error get inode(%xh)'s addr.\n", Inode));
DEBUG(DL_ERR, ( "Ext2SaveInode: failed inode %u.\n", Inode));
goto errorout;
}
@ -416,9 +549,8 @@ Ext2SaveInode ( IN PEXT2_IRP_CONTEXT IrpContext,
IN PEXT2_VCB Vcb,
IN struct inode *Inode)
{
struct ext3_inode ext3i;
struct ext3_inode ext3i = {0};
IO_STATUS_BLOCK IoStatus;
LONGLONG Offset = 0;
ULONG InodeSize = sizeof(ext3i);
BOOLEAN rc = 0;
@ -427,24 +559,14 @@ Ext2SaveInode ( IN PEXT2_IRP_CONTEXT IrpContext,
Inode->i_ino, Inode->i_mode, Inode->i_size));
rc = Ext2GetInodeLba(Vcb, Inode->i_ino, &Offset);
if (!rc) {
DEBUG(DL_ERR, ( "Ext2SaveInode: error get inode(%xh)'s addr.\n", Inode->i_ino));
DEBUG(DL_ERR, ( "Ext2SaveInode: failed inode %u.\n", Inode->i_ino));
goto errorout;
}
if (!CcCopyRead(
Vcb->Volume,
(PLARGE_INTEGER)&Offset,
sizeof(struct ext3_inode),
PIN_WAIT,
(PVOID)&ext3i,
&IoStatus )) {
rc = FALSE;
goto errorout;
}
if (!NT_SUCCESS(IoStatus.Status)) {
rc = FALSE;
goto errorout;
rc = Ext2LoadBuffer(NULL, Vcb, Offset, InodeSize, &ext3i);
if (!rc) {
DEBUG(DL_ERR, ( "Ext2SaveInode: failed reading inode %u.\n", Inode->i_ino));
goto errorout;;
}
Ext2EncodeInode(&ext3i, Inode);
@ -460,31 +582,111 @@ errorout:
return rc;
}
BOOLEAN
Ext2LoadInodeXattr(IN PEXT2_VCB Vcb,
IN struct inode *Inode,
IN PEXT2_INODE InodeXattr)
{
IO_STATUS_BLOCK IoStatus;
LONGLONG Offset;
if (!Ext2GetInodeLba(Vcb, Inode->i_ino, &Offset)) {
DEBUG(DL_ERR, ("Ext2LoadRawInode: error get inode(%xh)'s addr.\n", Inode->i_ino));
return FALSE;
}
if (!CcCopyRead(
Vcb->Volume,
(PLARGE_INTEGER)&Offset,
Vcb->InodeSize,
PIN_WAIT,
(PVOID)InodeXattr,
&IoStatus)) {
return FALSE;
}
if (!NT_SUCCESS(IoStatus.Status)) {
return FALSE;
}
Ext2EncodeInode(InodeXattr, Inode);
return TRUE;
}
BOOLEAN
Ext2SaveInodeXattr(IN PEXT2_IRP_CONTEXT IrpContext,
IN PEXT2_VCB Vcb,
IN struct inode *Inode,
IN PEXT2_INODE InodeXattr)
{
IO_STATUS_BLOCK IoStatus;
LONGLONG Offset = 0;
ULONG InodeSize = Vcb->InodeSize;
BOOLEAN rc = 0;
/* There is no way to put EA information in such a small inode */
if (InodeSize == EXT2_GOOD_OLD_INODE_SIZE)
return FALSE;
DEBUG(DL_INF, ("Ext2SaveInodeXattr: Saving Inode %xh: Mode=%xh Size=%xh\n",
Inode->i_ino, Inode->i_mode, Inode->i_size));
rc = Ext2GetInodeLba(Vcb, Inode->i_ino, &Offset);
if (!rc) {
DEBUG(DL_ERR, ("Ext2SaveInodeXattr: error get inode(%xh)'s addr.\n", Inode->i_ino));
goto errorout;
}
rc = Ext2SaveBuffer(IrpContext,
Vcb,
Offset + EXT2_GOOD_OLD_INODE_SIZE + Inode->i_extra_isize,
InodeSize - EXT2_GOOD_OLD_INODE_SIZE - Inode->i_extra_isize,
(char *)InodeXattr + EXT2_GOOD_OLD_INODE_SIZE + Inode->i_extra_isize);
if (rc && IsFlagOn(Vcb->Flags, VCB_FLOPPY_DISK)) {
Ext2StartFloppyFlushDpc(Vcb, NULL, NULL);
}
errorout:
return rc;
}
BOOLEAN
Ext2LoadBlock (IN PEXT2_VCB Vcb,
IN ULONG Index,
IN PVOID Buffer )
{
IO_STATUS_BLOCK IoStatus;
LONGLONG Offset;
struct buffer_head *bh = NULL;
BOOLEAN rc = 0;
Offset = (LONGLONG) Index;
Offset = Offset * Vcb->BlockSize;
_SEH2_TRY {
if (!CcCopyRead(
Vcb->Volume,
(PLARGE_INTEGER)&Offset,
Vcb->BlockSize,
PIN_WAIT,
Buffer,
&IoStatus ));
bh = sb_getblk(&Vcb->sb, (sector_t)Index);
if (!NT_SUCCESS(IoStatus.Status)) {
return FALSE;
}
if (!bh) {
DEBUG(DL_ERR, ("Ext2Loadblock: can't load block %u\n", Index));
DbgBreak();
_SEH2_LEAVE;
}
return TRUE;
if (!buffer_uptodate(bh)) {
int err = bh_submit_read(bh);
if (err < 0) {
DEBUG(DL_ERR, ("Ext2LoadBlock: reading failed %d\n", err));
_SEH2_LEAVE;
}
}
RtlCopyMemory(Buffer, bh->b_data, BLOCK_SIZE);
rc = TRUE;
} _SEH2_FINALLY {
if (bh)
fini_bh(&bh);
} _SEH2_END;
return rc;
}
@ -494,121 +696,231 @@ Ext2SaveBlock ( IN PEXT2_IRP_CONTEXT IrpContext,
IN ULONG Index,
IN PVOID Buf )
{
LONGLONG Offset;
BOOLEAN rc;
struct buffer_head *bh = NULL;
BOOLEAN rc = 0;
Offset = (LONGLONG) Index;
Offset = Offset * Vcb->BlockSize;
_SEH2_TRY {
rc = Ext2SaveBuffer(IrpContext, Vcb, Offset, Vcb->BlockSize, Buf);
bh = sb_getblk_zero(&Vcb->sb, (sector_t)Index);
if (IsFlagOn(Vcb->Flags, VCB_FLOPPY_DISK)) {
Ext2StartFloppyFlushDpc(Vcb, NULL, NULL);
}
if (!bh) {
DEBUG(DL_ERR, ("Ext2Saveblock: can't load block %u\n", Index));
DbgBreak();
_SEH2_LEAVE;
}
if (!buffer_uptodate(bh)) {
}
RtlCopyMemory(bh->b_data, Buf, BLOCK_SIZE);
mark_buffer_dirty(bh);
rc = TRUE;
} _SEH2_FINALLY {
if (bh)
fini_bh(&bh);
} _SEH2_END;
return rc;
}
BOOLEAN
Ext2LoadBuffer( IN PEXT2_IRP_CONTEXT IrpContext,
IN PEXT2_VCB Vcb,
IN LONGLONG offset,
IN ULONG size,
IN PVOID buf )
{
struct buffer_head *bh = NULL;
BOOLEAN rc;
_SEH2_TRY {
while (size) {
sector_t block;
ULONG len = 0, delta = 0;
block = (sector_t) (offset >> BLOCK_BITS);
delta = (ULONG)offset & (BLOCK_SIZE - 1);
len = BLOCK_SIZE - delta;
if (size < len)
len = size;
bh = sb_getblk(&Vcb->sb, block);
if (!bh) {
DEBUG(DL_ERR, ("Ext2SaveBuffer: can't load block %I64u\n", block));
DbgBreak();
_SEH2_LEAVE;
}
if (!buffer_uptodate(bh)) {
int err = bh_submit_read(bh);
if (err < 0) {
DEBUG(DL_ERR, ("Ext2SaveBuffer: bh_submit_read failed: %d\n", err));
_SEH2_LEAVE;
}
}
_SEH2_TRY {
RtlCopyMemory(buf, bh->b_data + delta, len);
} _SEH2_FINALLY {
fini_bh(&bh);
} _SEH2_END;
buf = (PUCHAR)buf + len;
offset = offset + len;
size = size - len;
}
rc = TRUE;
} _SEH2_FINALLY {
if (bh)
fini_bh(&bh);
} _SEH2_END;
return rc;
}
BOOLEAN
Ext2ZeroBuffer( IN PEXT2_IRP_CONTEXT IrpContext,
IN PEXT2_VCB Vcb,
IN LONGLONG Offset,
IN ULONG Size )
IN LONGLONG offset,
IN ULONG size
)
{
PBCB Bcb;
PVOID Buffer;
BOOLEAN rc;
if ( !CcPreparePinWrite(
Vcb->Volume,
(PLARGE_INTEGER) (&Offset),
Size,
FALSE,
PIN_WAIT | PIN_EXCLUSIVE,
&Bcb,
&Buffer )) {
DEBUG(DL_ERR, ( "Ext2SaveBuffer: failed to PinLock offset %I64xh ...\n", Offset));
return FALSE;
}
struct buffer_head *bh = NULL;
BOOLEAN rc = 0;
_SEH2_TRY {
RtlZeroMemory(Buffer, Size);
CcSetDirtyPinnedData(Bcb, NULL );
SetFlag(Vcb->Volume->Flags, FO_FILE_MODIFIED);
while (size) {
rc = Ext2AddVcbExtent(Vcb, Offset, (LONGLONG)Size);
if (!rc) {
DbgBreak();
Ext2Sleep(100);
rc = Ext2AddVcbExtent(Vcb, Offset, (LONGLONG)Size);
sector_t block;
ULONG len = 0, delta = 0;
block = (sector_t) (offset >> BLOCK_BITS);
delta = (ULONG)offset & (BLOCK_SIZE - 1);
len = BLOCK_SIZE - delta;
if (size < len)
len = size;
if (delta == 0 && len >= BLOCK_SIZE) {
bh = sb_getblk_zero(&Vcb->sb, block);
} else {
bh = sb_getblk(&Vcb->sb, block);
}
if (!bh) {
DEBUG(DL_ERR, ("Ext2SaveBuffer: can't load block %I64u\n", block));
DbgBreak();
_SEH2_LEAVE;
}
if (!buffer_uptodate(bh)) {
int err = bh_submit_read(bh);
if (err < 0) {
DEBUG(DL_ERR, ("Ext2SaveBuffer: bh_submit_read failed: %d\n", err));
_SEH2_LEAVE;
}
}
_SEH2_TRY {
if (delta == 0 && len >= BLOCK_SIZE) {
/* bh (cache) was already cleaned as zero */
} else {
RtlZeroMemory(bh->b_data + delta, len);
}
mark_buffer_dirty(bh);
} _SEH2_FINALLY {
fini_bh(&bh);
} _SEH2_END;
offset = offset + len;
size = size - len;
}
} _SEH2_FINALLY {
CcUnpinData(Bcb);
} _SEH2_END;
rc = TRUE;
} _SEH2_FINALLY {
if (bh)
fini_bh(&bh);
} _SEH2_END;
return rc;
}
#define SIZE_256K 0x40000
BOOLEAN
Ext2SaveBuffer( IN PEXT2_IRP_CONTEXT IrpContext,
IN PEXT2_VCB Vcb,
IN LONGLONG Offset,
IN ULONG Size,
IN PVOID Buf )
IN LONGLONG offset,
IN ULONG size,
IN PVOID buf )
{
BOOLEAN rc;
struct buffer_head *bh = NULL;
BOOLEAN rc = 0;
while (Size) {
_SEH2_TRY {
PBCB Bcb;
PVOID Buffer;
ULONG Length;
while (size) {
Length = (ULONG)Offset & (SIZE_256K - 1);
Length = SIZE_256K - Length;
if (Size < Length)
Length = Size;
sector_t block;
ULONG len = 0, delta = 0;
if ( !CcPreparePinWrite(
Vcb->Volume,
(PLARGE_INTEGER) (&Offset),
Length,
FALSE,
PIN_WAIT | PIN_EXCLUSIVE,
&Bcb,
&Buffer )) {
block = (sector_t) (offset >> BLOCK_BITS);
delta = (ULONG)offset & (BLOCK_SIZE - 1);
len = BLOCK_SIZE - delta;
if (size < len)
len = size;
DEBUG(DL_ERR, ( "Ext2SaveBuffer: failed to PinLock offset %I64xh ...\n", Offset));
return FALSE;
}
_SEH2_TRY {
RtlCopyMemory(Buffer, Buf, Length);
CcSetDirtyPinnedData(Bcb, NULL );
SetFlag(Vcb->Volume->Flags, FO_FILE_MODIFIED);
rc = Ext2AddVcbExtent(Vcb, Offset, (LONGLONG)Length);
if (!rc) {
DbgBreak();
Ext2Sleep(100);
rc = Ext2AddVcbExtent(Vcb, Offset, (LONGLONG)Length);
if (delta == 0 && len >= BLOCK_SIZE) {
bh = sb_getblk_zero(&Vcb->sb, block);
} else {
bh = sb_getblk(&Vcb->sb, block);
}
} _SEH2_FINALLY {
CcUnpinData(Bcb);
} _SEH2_END;
if (!bh) {
DEBUG(DL_ERR, ("Ext2SaveBuffer: can't load block %I64u\n", block));
DbgBreak();
_SEH2_LEAVE;
}
Buf = (PUCHAR)Buf + Length;
Offset = Offset + Length;
Size = Size - Length;
}
if (!buffer_uptodate(bh)) {
int err = bh_submit_read(bh);
if (err < 0) {
DEBUG(DL_ERR, ("Ext2SaveBuffer: bh_submit_read failed: %d\n", err));
_SEH2_LEAVE;
}
}
_SEH2_TRY {
RtlCopyMemory(bh->b_data + delta, buf, len);
mark_buffer_dirty(bh);
} _SEH2_FINALLY {
fini_bh(&bh);
} _SEH2_END;
buf = (PUCHAR)buf + len;
offset = offset + len;
size = size - len;
}
rc = TRUE;
} _SEH2_FINALLY {
if (bh)
fini_bh(&bh);
} _SEH2_END;
return rc;
}
@ -1522,7 +1834,7 @@ Ext2AddEntry (
ExAcquireResourceExclusiveLite(&Dcb->MainResource, TRUE);
MainResourceAcquired = TRUE;
_SEH2_TRY {
_SEH2_TRY {
Ext2ReferXcb(&Dcb->ReferenceCount);
de = Ext2BuildEntry(Vcb, Dcb->Mcb, FileName);
@ -1661,7 +1973,7 @@ Ext2RemoveEntry (
ExAcquireResourceExclusiveLite(&Dcb->MainResource, TRUE);
MainResourceAcquired = TRUE;
_SEH2_TRY {
_SEH2_TRY {
Ext2ReferXcb(&Dcb->ReferenceCount);
@ -1682,7 +1994,7 @@ Ext2RemoveEntry (
rc = ext3_delete_entry(IrpContext, dir, de, bh);
if (rc) {
Status = Ext2WinntError(rc);
_SEH2_LEAVE;
_SEH2_LEAVE;
}
/*
if (!inode->i_nlink)
@ -1701,7 +2013,7 @@ Ext2RemoveEntry (
Status = STATUS_SUCCESS;
} _SEH2_FINALLY {
} _SEH2_FINALLY {
Ext2DerefXcb(&Dcb->ReferenceCount);
@ -2620,11 +2932,15 @@ struct ext4_group_desc * ext4_get_group_desc(struct super_block *sb,
group = block_group >> EXT4_DESC_PER_BLOCK_BITS(sb);
offset = block_group & (EXT4_DESC_PER_BLOCK(sb) - 1);
if (!sbi->s_gd || !sbi->s_gd[group].block ||
!sbi->s_gd[group].bh) {
if (!sbi->s_gd) {
if (!Ext2LoadGroup(vcb)) {
_SEH2_LEAVE;
}
} else if ( !sbi->s_gd[group].block ||
!sbi->s_gd[group].bh) {
if (!Ext2LoadGroupBH(vcb)) {
_SEH2_LEAVE;
}
}
desc = (struct ext4_group_desc *)((PCHAR)sbi->s_gd[group].gd +

7
drivers/filesystems/ext2/src/ext3/recover.c
View file

@ -108,9 +108,12 @@ Ext2RecoverJournal(
journal_t * journal = NULL;
struct ext3_super_block *esb;
ExAcquireResourceExclusiveLite(&Vcb->MainResource, TRUE);
/* check journal inode number */
if (!Ext2CheckJournal(Vcb, &jNo)) {
return -1;
rc = -1;
goto errorout;
}
/* allocate journal Mcb */
@ -168,5 +171,7 @@ errorout:
Ext2FreeMcb(Vcb, jcb);
}
ExReleaseResourceLite(&Vcb->MainResource);
return rc;
}

1
drivers/filesystems/ext2/src/ext4/ext4_extents.c
View file

@ -2454,6 +2454,7 @@ int ext4_ext_get_blocks(void *icb, handle_t *handle, struct inode *inode, ext4_f
/* allocate new block */
goal = ext4_ext_find_goal(inode, path, iblock);
newblock = ext4_new_meta_blocks(icb, handle, inode, goal, 0,
&allocated, &err);
if (!newblock)

1295
drivers/filesystems/ext2/src/ext4/ext4_xattr.c Normal file
View file

File diff suppressed because it is too large Load diff

5
drivers/filesystems/ext2/src/fastio.c
View file

@ -93,6 +93,11 @@ Ext2FastIoCheckIfPossible (
ASSERT((Fcb->Identifier.Type == EXT2FCB) &&
(Fcb->Identifier.Size == sizeof(EXT2_FCB)));
/* do nothing if target fie was deleted */
if (FlagOn(Fcb->Flags, FCB_DELETE_PENDING)) {
_SEH2_LEAVE;
}
if (IsDirectory(Fcb)) {
_SEH2_LEAVE;
}

34
drivers/filesystems/ext2/src/fileinfo.c
View file

@ -11,6 +11,7 @@
#include "ext2fs.h"
#include <linux/ext4.h>
#include "linux/ext4_xattr.h"
/* GLOBALS ***************************************************************/
@ -29,6 +30,15 @@ extern PEXT2_GLOBAL Ext2Global;
#pragma alloc_text(PAGE, Ext2DeleteFile)
#endif
static int Ext2IterateAllEa(struct ext4_xattr_ref *xattr_ref, struct ext4_xattr_item *item, BOOL is_last)
{
PULONG EaSize = xattr_ref->iter_arg;
ULONG EaEntrySize = 4 + 1 + 1 + 2 + item->name_len + 1 + item->data_size;
*EaSize += EaEntrySize - 4;
return EXT4_XATTR_ITERATE_CONT;
}
NTSTATUS
Ext2QueryFileInformation (IN PEXT2_IRP_CONTEXT IrpContext)
{
@ -205,6 +215,7 @@ Ext2QueryFileInformation (IN PEXT2_IRP_CONTEXT IrpContext)
case FileEaInformation:
{
struct ext4_xattr_ref xattr_ref;
PFILE_EA_INFORMATION FileEaInformation;
if (Length < sizeof(FILE_EA_INFORMATION)) {
@ -213,10 +224,19 @@ Ext2QueryFileInformation (IN PEXT2_IRP_CONTEXT IrpContext)
}
FileEaInformation = (PFILE_EA_INFORMATION) Buffer;
// Romfs doesn't have any extended attributes
FileEaInformation->EaSize = 0;
Status = Ext2WinntError(ext4_fs_get_xattr_ref(IrpContext, Vcb, Fcb->Mcb, &xattr_ref));
if (!NT_SUCCESS(Status))
_SEH2_LEAVE;
xattr_ref.iter_arg = &FileEaInformation->EaSize;
ext4_fs_xattr_iterate(&xattr_ref, Ext2IterateAllEa);
ext4_fs_put_xattr_ref(&xattr_ref);
if (FileEaInformation->EaSize)
FileEaInformation->EaSize += 4;
Irp->IoStatus.Information = sizeof(FILE_EA_INFORMATION);
Status = STATUS_SUCCESS;
}
@ -1936,12 +1956,14 @@ Ext2DeleteFile(
ExAcquireResourceExclusiveLite(&Vcb->FcbLock, TRUE);
bFcbLockAcquired = TRUE;
if (!(Dcb = Mcb->Parent->Fcb)) {
Dcb = Ext2AllocateFcb(Vcb, Mcb->Parent);
/* Mcb->Parent could be NULL when working with layered file systems */
if (Mcb->Parent) {
Dcb = Mcb->Parent->Fcb;
if (!Dcb)
Dcb = Ext2AllocateFcb(Vcb, Mcb->Parent);
}
if (Dcb) {
if (Dcb)
Ext2ReferXcb(&Dcb->ReferenceCount);
}
if (bFcbLockAcquired) {
ExReleaseResourceLite(&Vcb->FcbLock);

94
drivers/filesystems/ext2/src/flush.c
View file

@ -35,41 +35,6 @@ Ext2FlushCompletionRoutine (
return STATUS_SUCCESS;
}
NTSTATUS
Ext2FlushFiles(
IN PEXT2_IRP_CONTEXT IrpContext,
IN PEXT2_VCB Vcb,
IN BOOLEAN bShutDown
)
{
IO_STATUS_BLOCK IoStatus;
PEXT2_FCB Fcb;
PLIST_ENTRY ListEntry;
if (IsVcbReadOnly(Vcb)) {
return STATUS_SUCCESS;
}
IoStatus.Status = STATUS_SUCCESS;
DEBUG(DL_INF, ( "Flushing Files ...\n"));
// Flush all Fcbs in Vcb list queue.
for (ListEntry = Vcb->FcbList.Flink;
ListEntry != &Vcb->FcbList;
ListEntry = ListEntry->Flink ) {
Fcb = CONTAINING_RECORD(ListEntry, EXT2_FCB, Next);
ExAcquireResourceExclusiveLite(
&Fcb->MainResource, TRUE);
IoStatus.Status = Ext2FlushFile(IrpContext, Fcb, NULL);
ExReleaseResourceLite(&Fcb->MainResource);
}
return IoStatus.Status;
}
NTSTATUS
Ext2FlushVolume (
IN PEXT2_IRP_CONTEXT IrpContext,
@ -77,26 +42,12 @@ Ext2FlushVolume (
IN BOOLEAN bShutDown
)
{
IO_STATUS_BLOCK IoStatus;
DEBUG(DL_INF, ( "Ext2FlushVolume: Flushing Vcb ...\n"));
ExAcquireSharedStarveExclusive(&Vcb->PagingIoResource, TRUE);
ExReleaseResourceLite(&Vcb->PagingIoResource);
/* acquire gd lock to avoid gd/bh creation */
ExAcquireResourceExclusiveLite(&Vcb->sbi.s_gd_lock, TRUE);
/* discard buffer_headers for group_desc */
Ext2DropBH(Vcb);
/* do flushing */
CcFlushCache(&(Vcb->SectionObject), NULL, 0, &IoStatus);
/* release gd lock */
ExReleaseResourceLite(&Vcb->sbi.s_gd_lock);
return IoStatus.Status;
return Ext2FlushVcb(Vcb);
}
NTSTATUS
@ -106,7 +57,7 @@ Ext2FlushFile (
IN PEXT2_CCB Ccb
)
{
IO_STATUS_BLOCK IoStatus;
IO_STATUS_BLOCK IoStatus = {0};
ASSERT(Fcb != NULL);
ASSERT((Fcb->Identifier.Type == EXT2FCB) &&
@ -114,6 +65,12 @@ Ext2FlushFile (
_SEH2_TRY {
/* do nothing if target fie was deleted */
if (FlagOn(Fcb->Flags, FCB_DELETE_PENDING)) {
IoStatus.Status = STATUS_FILE_DELETED;
_SEH2_LEAVE;
}
/* update timestamp and achieve attribute */
if (Ccb != NULL) {
@ -147,6 +104,41 @@ Ext2FlushFile (
return IoStatus.Status;
}
NTSTATUS
Ext2FlushFiles(
IN PEXT2_IRP_CONTEXT IrpContext,
IN PEXT2_VCB Vcb,
IN BOOLEAN bShutDown
)
{
IO_STATUS_BLOCK IoStatus;
PEXT2_FCB Fcb;
PLIST_ENTRY ListEntry;
if (IsVcbReadOnly(Vcb)) {
return STATUS_SUCCESS;
}
IoStatus.Status = STATUS_SUCCESS;
DEBUG(DL_INF, ( "Flushing Files ...\n"));
// Flush all Fcbs in Vcb list queue.
for (ListEntry = Vcb->FcbList.Flink;
ListEntry != &Vcb->FcbList;
ListEntry = ListEntry->Flink ) {
Fcb = CONTAINING_RECORD(ListEntry, EXT2_FCB, Next);
ExAcquireResourceExclusiveLite(
&Fcb->MainResource, TRUE);
Ext2FlushFile(IrpContext, Fcb, NULL);
ExReleaseResourceLite(&Fcb->MainResource);
}
return IoStatus.Status;
}
NTSTATUS
Ext2Flush (IN PEXT2_IRP_CONTEXT IrpContext)

5
drivers/filesystems/ext2/src/fsctl.c
View file

@ -2130,6 +2130,11 @@ Ext2MountVolume (IN PEXT2_IRP_CONTEXT IrpContext)
}
INC_MEM_COUNT(PS_VCB, VolumeDeviceObject, sizeof(EXT2_VCB));
#ifdef _PNP_POWER_
/* don't care about power management requests */
VolumeDeviceObject->DeviceObjectExtension->PowerControlNeeded = FALSE;
#endif
VolumeDeviceObject->StackSize = (CCHAR)(TargetDeviceObject->StackSize + 1);
ClearFlag(VolumeDeviceObject->Flags, DO_DEVICE_INITIALIZING);

8
drivers/filesystems/ext2/src/init.c
View file

@ -581,6 +581,11 @@ DriverEntry (
goto errorout;
}
#ifdef _PNP_POWER_
DiskdevObject->DeviceObjectExtension->PowerControlNeeded = FALSE;
CdromdevObject->DeviceObjectExtension->PowerControlNeeded = FALSE;
#endif
/* initializing */
Ext2Global->DiskdevObject = DiskdevObject;
Ext2Global->CdromdevObject = CdromdevObject;
@ -604,6 +609,9 @@ DriverEntry (
DriverObject->MajorFunction[IRP_MJ_DEVICE_CONTROL] = Ext2BuildRequest;
DriverObject->MajorFunction[IRP_MJ_LOCK_CONTROL] = Ext2BuildRequest;
DriverObject->MajorFunction[IRP_MJ_QUERY_EA] = Ext2BuildRequest;
DriverObject->MajorFunction[IRP_MJ_SET_EA] = Ext2BuildRequest;
DriverObject->MajorFunction[IRP_MJ_CLEANUP] = Ext2BuildRequest;
#if (_WIN32_WINNT >= 0x0500)

33
drivers/filesystems/ext2/src/linux.c
View file

@ -421,7 +421,7 @@ static void buffer_head_insert(struct block_device *bdev, struct buffer_head *bh
rb_insert(&bdev->bd_bh_root, &bh->b_rb_node, buffer_head_blocknr_cmp);
}
static void buffer_head_remove(struct block_device *bdev, struct buffer_head *bh)
void buffer_head_remove(struct block_device *bdev, struct buffer_head *bh)
{
rb_erase(&bh->b_rb_node, &bdev->bd_bh_root);
}
@ -469,6 +469,9 @@ get_block_bh_mdl(
bh->b_blocknr = block;
bh->b_size = size;
bh->b_data = NULL;
#ifdef __REACTOS__
InitializeListHead(&bh->b_link);
#endif
again:
@ -476,11 +479,12 @@ again:
offset.QuadPart <<= BLOCK_BITS;
if (zero) {
/* PIN_EXCLUSIVE disabled, likely to deadlock with volume operations */
if (!CcPreparePinWrite(Vcb->Volume,
&offset,
bh->b_size,
FALSE,
PIN_WAIT | PIN_EXCLUSIVE,
PIN_WAIT /* | PIN_EXCLUSIVE */,
&bcb,
&ptr)) {
Ext2Sleep(100);
@ -563,12 +567,14 @@ int submit_bh_mdl(int rw, struct buffer_head *bh)
SetFlag(Vcb->Volume->Flags, FO_FILE_MODIFIED);
Offset.QuadPart = ((LONGLONG)bh->b_blocknr) << BLOCK_BITS;
/* PIN_EXCLUSIVE disabled, likely to deadlock with volume operations */
if (CcPreparePinWrite(
Vcb->Volume,
&Offset,
BLOCK_SIZE,
FALSE,
PIN_WAIT | PIN_EXCLUSIVE,
PIN_WAIT /* | PIN_EXCLUSIVE */,
&Bcb,
&Buffer )) {
#if 0
@ -592,8 +598,6 @@ int submit_bh_mdl(int rw, struct buffer_head *bh)
}
} else {
DbgBreak();
}
errorout:
@ -644,6 +648,9 @@ get_block_bh_pin(
bh->b_blocknr = block;
bh->b_size = size;
bh->b_data = NULL;
#ifdef __REACTOS__
InitializeListHead(&bh->b_link);
#endif
again:
@ -692,11 +699,11 @@ again:
tbh = buffer_head_search(bdev, block);
if (tbh) {
get_bh(tbh);
ExReleaseResourceLite(&bdev->bd_bh_lock);
free_buffer_head(bh);
bh = tbh;
RemoveEntryList(&bh->b_link);
InitializeListHead(&bh->b_link);
ExReleaseResourceLite(&bdev->bd_bh_lock);
goto errorout;
} else {
buffer_head_insert(bdev, bh);
@ -734,7 +741,6 @@ int submit_bh_pin(int rw, struct buffer_head *bh)
(ULONG)bh->b_blocknr,
(bh->b_size >> BLOCK_BITS));
} else {
DbgBreak();
}
errorout:
@ -803,13 +809,6 @@ void __brelse(struct buffer_head *bh)
ll_rw_block(WRITE, 1, &bh);
}
if (1 == atomic_read(&bh->b_count)) {
} else if (atomic_dec_and_test(&bh->b_count)) {
atomic_inc(&bh->b_count);
} else {
return;
}
ExAcquireResourceExclusiveLite(&bdev->bd_bh_lock, TRUE);
if (atomic_dec_and_test(&bh->b_count)) {
ASSERT(0 == atomic_read(&bh->b_count));
@ -817,8 +816,11 @@ void __brelse(struct buffer_head *bh)
ExReleaseResourceLite(&bdev->bd_bh_lock);
return;
}
buffer_head_remove(bdev, bh);
KeQuerySystemTime(&bh->b_ts_drop);
#ifdef __REACTOS__
if (!IsListEmpty(&bh->b_link))
#endif
RemoveEntryList(&bh->b_link);
InsertTailList(&Vcb->bd.bd_bh_free, &bh->b_link);
KeClearEvent(&Vcb->bd.bd_bh_notify);
ExReleaseResourceLite(&bdev->bd_bh_lock);
@ -924,6 +926,7 @@ __find_get_block(struct block_device *bdev, sector_t block, unsigned long size)
return __getblk(bdev, block, size);
}
//
// inode block mapping
//

107
drivers/filesystems/ext2/src/memory.c
View file

@ -207,7 +207,7 @@ Ext2UnlinkFcb(IN PEXT2_FCB Fcb)
ExAcquireResourceExclusiveLite(&Vcb->McbLock, TRUE);
Mcb = Fcb->Mcb;
DEBUG(DL_ERR, ("Ext2FreeFcb: Fcb (%p) to be unlinked: %wZ.\n",
DEBUG(DL_INF, ("Ext2FreeFcb: Fcb (%p) to be unlinked: %wZ.\n",
Fcb, Mcb ? &Mcb->FullName : NULL));
if ((Mcb != NULL) &&
@ -2364,6 +2364,7 @@ Ext2InitializeVcb( IN PEXT2_IRP_CONTEXT IrpContext,
ExInitializeResourceLite(&Vcb->MetaInode);
ExInitializeResourceLite(&Vcb->MetaBlock);
ExInitializeResourceLite(&Vcb->McbLock);
ExInitializeResourceLite(&Vcb->FcbLock);
ExInitializeResourceLite(&Vcb->sbi.s_gd_lock);
#ifndef _WIN2K_TARGET_
ExInitializeFastMutex(&Vcb->Mutex);
@ -2373,7 +2374,6 @@ Ext2InitializeVcb( IN PEXT2_IRP_CONTEXT IrpContext,
/* initialize Fcb list head */
InitializeListHead(&Vcb->FcbList);
ExInitializeResourceLite(&Vcb->FcbLock);
/* initialize Mcb list head */
InitializeListHead(&(Vcb->McbList));
@ -2401,7 +2401,7 @@ Ext2InitializeVcb( IN PEXT2_IRP_CONTEXT IrpContext,
/* initialize inode lookaside list */
ExInitializeNPagedLookasideList(&(Vcb->InodeLookasideList),
NULL, NULL, 0, sizeof(EXT2_INODE),
NULL, NULL, 0, Vcb->InodeSize,
'SNIE', 0);
InodeLookasideInitialized = TRUE;
@ -2761,6 +2761,7 @@ Ext2InitializeVcb( IN PEXT2_IRP_CONTEXT IrpContext,
}
if (VcbResourceInitialized) {
ExDeleteResourceLite(&Vcb->FcbLock);
ExDeleteResourceLite(&Vcb->McbLock);
ExDeleteResourceLite(&Vcb->MetaInode);
ExDeleteResourceLite(&Vcb->MetaBlock);
@ -2964,47 +2965,63 @@ Ext2FirstUnusedMcb(PEXT2_VCB Vcb, BOOLEAN Wait, ULONG Number)
PEXT2_MCB Mcb = NULL;
PLIST_ENTRY List = NULL;
ULONG i = 0;
LARGE_INTEGER start, now;
if (!ExAcquireResourceExclusiveLite(&Vcb->McbLock, Wait)) {
return NULL;
}
KeQuerySystemTime(&start);
while (Number--) {
if (!IsListEmpty(&Vcb->McbList)) {
BOOLEAN Skip = TRUE;
while (i++ < Vcb->NumOfMcb) {
if (IsListEmpty(&Vcb->McbList)) {
break;
}
List = RemoveHeadList(&Vcb->McbList);
Mcb = CONTAINING_RECORD(List, EXT2_MCB, Link);
ASSERT(IsFlagOn(Mcb->Flags, MCB_VCB_LINK));
while (i++ < Vcb->NumOfMcb) {
if (Mcb->Fcb == NULL && !IsMcbRoot(Mcb) &&
Mcb->Refercount == 0 &&
(Mcb->Child == NULL || IsMcbSymLink(Mcb))) {
KeQuerySystemTime(&now);
if (now.QuadPart > start.QuadPart + (LONGLONG)10*1000*1000) {
break;
}
Ext2RemoveMcb(Vcb, Mcb);
ClearLongFlag(Mcb->Flags, MCB_VCB_LINK);
Ext2DerefXcb(&Vcb->NumOfMcb);
List = RemoveHeadList(&Vcb->McbList);
Mcb = CONTAINING_RECORD(List, EXT2_MCB, Link);
ASSERT(IsFlagOn(Mcb->Flags, MCB_VCB_LINK));
/* attach all Mcb into a chain*/
if (Head) {
ASSERT(Tail != NULL);
Tail->Next = Mcb;
Tail = Mcb;
} else {
Head = Tail = Mcb;
}
Tail->Next = NULL;
if (Mcb->Fcb == NULL && !IsMcbRoot(Mcb) &&
Mcb->Refercount == 0 &&
(Mcb->Child == NULL || IsMcbSymLink(Mcb))) {
Ext2RemoveMcb(Vcb, Mcb);
ClearLongFlag(Mcb->Flags, MCB_VCB_LINK);
Ext2DerefXcb(&Vcb->NumOfMcb);
/* attach all Mcb into a chain*/
if (Head) {
ASSERT(Tail != NULL);
Tail->Next = Mcb;
Tail = Mcb;
} else {
InsertTailList(&Vcb->McbList, &Mcb->Link);
Mcb = NULL;
Head = Tail = Mcb;
}
Tail->Next = NULL;
Skip = FALSE;
} else {
InsertTailList(&Vcb->McbList, &Mcb->Link);
Mcb = NULL;
}
}
if (Skip)
break;
}
ExReleaseResourceLite(&Vcb->McbLock);
return Head;
@ -3119,7 +3136,9 @@ Ext2McbReaperThread(
LastState = DidNothing = FALSE;
}
}
if (DidNothing) {
KeClearEvent(&Reaper->Wait);
}
if (GlobalAcquired) {
ExReleaseResourceLite(&Ext2Global->Resource);
GlobalAcquired = FALSE;
@ -3145,15 +3164,21 @@ BOOLEAN
Ext2QueryUnusedBH(PEXT2_VCB Vcb, PLIST_ENTRY head)
{
struct buffer_head *bh = NULL;
PLIST_ENTRY next = NULL;
LARGE_INTEGER now;
BOOLEAN wake = FALSE;
PLIST_ENTRY next = NULL;
LARGE_INTEGER start, now;
BOOLEAN wake = FALSE;
KeQuerySystemTime(&now);
KeQuerySystemTime(&start);
ExAcquireResourceExclusiveLite(&Vcb->bd.bd_bh_lock, TRUE);
while (!IsListEmpty(&Vcb->bd.bd_bh_free)) {
KeQuerySystemTime(&now);
if (now.QuadPart > start.QuadPart + (LONGLONG)10*1000*1000) {
break;
}
next = RemoveHeadList(&Vcb->bd.bd_bh_free);
bh = CONTAINING_RECORD(next, struct buffer_head, b_link);
if (atomic_read(&bh->b_count)) {
@ -3166,6 +3191,7 @@ Ext2QueryUnusedBH(PEXT2_VCB Vcb, PLIST_ENTRY head)
(bh->b_ts_drop.QuadPart + (LONGLONG)10*1000*1000*15) > now.QuadPart ||
(bh->b_ts_creat.QuadPart + (LONGLONG)10*1000*1000*180) > now.QuadPart) {
InsertTailList(head, &bh->b_link);
buffer_head_remove(&Vcb->bd, bh);
} else {
InsertHeadList(&Vcb->bd.bd_bh_free, &bh->b_link);
break;
@ -3240,12 +3266,15 @@ Ext2bhReaperThread(
Vcb = CONTAINING_RECORD(Link, EXT2_VCB, Next);
NonWait = Ext2QueryUnusedBH(Vcb, &List);
}
DidNothing = IsListEmpty(&List);
if (DidNothing) {
KeClearEvent(&Reaper->Wait);
}
if (GlobalAcquired) {
ExReleaseResourceLite(&Ext2Global->Resource);
GlobalAcquired = FALSE;
}
DidNothing = IsListEmpty(&List);
while (!IsListEmpty(&List)) {
struct buffer_head *bh;
Link = RemoveHeadList(&List);
@ -3274,19 +3303,20 @@ Ext2QueryUnusedFcb(PEXT2_VCB Vcb, PLIST_ENTRY list)
{
PEXT2_FCB Fcb;
PLIST_ENTRY next = NULL;
LARGE_INTEGER now;
LARGE_INTEGER start, now;
ULONG count = 0;
ULONG tries = 0;
BOOLEAN wake = FALSE;
BOOLEAN retry = TRUE;
KeQuerySystemTime(&now);
KeQuerySystemTime(&start);
ExAcquireResourceExclusiveLite(&Vcb->FcbLock, TRUE);
again:
KeQuerySystemTime(&now);
while (!IsListEmpty(&Vcb->FcbList)) {
next = RemoveHeadList(&Vcb->FcbList);
@ -3312,6 +3342,10 @@ again:
}
}
if (start.QuadPart + 10*1000*1000 > now.QuadPart) {
retry = FALSE;
}
if (retry) {
if (++tries < (Vcb->FcbCount >> 4) )
goto again;
@ -3380,12 +3414,15 @@ Ext2FcbReaperThread(
Vcb = CONTAINING_RECORD(Link, EXT2_VCB, Next);
NonWait = Ext2QueryUnusedFcb(Vcb, &List);
}
DidNothing = IsListEmpty(&List);
if (DidNothing) {
KeClearEvent(&Reaper->Wait);
}
if (GlobalAcquired) {
ExReleaseResourceLite(&Ext2Global->Resource);
GlobalAcquired = FALSE;
}
DidNothing = IsListEmpty(&List);
while (!IsListEmpty(&List)) {
PEXT2_FCB Fcb;
Link = RemoveHeadList(&List);

2
drivers/filesystems/ext2/src/volinfo.c
View file

@ -188,7 +188,7 @@ Ext2QueryVolumeInformation (IN PEXT2_IRP_CONTEXT IrpContext)
(PFILE_FS_ATTRIBUTE_INFORMATION) Buffer;
FsAttrInfo->FileSystemAttributes = FILE_SUPPORTS_HARD_LINKS |
FILE_CASE_SENSITIVE_SEARCH | FILE_CASE_PRESERVED_NAMES |
FILE_SUPPORTS_REPARSE_POINTS;
FILE_SUPPORTS_REPARSE_POINTS | FILE_SUPPORTS_EXTENDED_ATTRIBUTES;
if (IsVcbReadOnly(Vcb)) {
FsAttrInfo->FileSystemAttributes |= FILE_READ_ONLY_VOLUME;
}

18
drivers/filesystems/ext2/src/write.c
View file

@ -78,23 +78,24 @@ Ext2FloppyFlush(IN PVOID Parameter)
if (FileObject) {
ASSERT(Fcb == (PEXT2_FCB)FileObject->FsContext);
ExAcquireResourceExclusiveLite(&Fcb->MainResource, TRUE);
ExAcquireSharedStarveExclusive(&Fcb->PagingIoResource, TRUE);
ExReleaseResourceLite(&Fcb->PagingIoResource);
CcFlushCache(&(Fcb->SectionObject), NULL, 0, NULL);
ExReleaseResourceLite(&Fcb->MainResource);
ObDereferenceObject(FileObject);
}
if (Vcb) {
ExAcquireResourceExclusiveLite(&Vcb->MainResource, TRUE);
ExAcquireSharedStarveExclusive(&Vcb->PagingIoResource, TRUE);
ExReleaseResourceLite(&Vcb->PagingIoResource);
ExAcquireResourceExclusiveLite(&Vcb->sbi.s_gd_lock, TRUE);
Ext2DropBH(Vcb);
CcFlushCache(&(Vcb->SectionObject), NULL, 0, NULL);
ExReleaseResourceLite(&Vcb->sbi.s_gd_lock);
Ext2FlushVcb(Vcb);
ExReleaseResourceLite(&Vcb->MainResource);
}
IoSetTopLevelIrp(NULL);
@ -490,7 +491,7 @@ Ext2WriteVolume (IN PEXT2_IRP_CONTEXT IrpContext)
}
Extent->Irp = NULL;
Extent->Lba = DirtyLba;
Extent->Lba = DirtyStart;
Extent->Offset = (ULONG)( DirtyStart + Length -
RemainLength - DirtyLba );
ASSERT(Extent->Offset <= Length);
@ -503,14 +504,17 @@ Ext2WriteVolume (IN PEXT2_IRP_CONTEXT IrpContext)
RemainLength = 0;
} else {
Extent->Length = (ULONG)(DirtyLength + DirtyLba - DirtyStart);
RemainLength = RemainLength - Extent->Length;
/*
RemainLength = (DirtyStart + RemainLength) -
(DirtyLba + DirtyLength);
*/
ASSERT(RemainLength <= (LONGLONG)Length);
ASSERT(Extent->Length <= Length);
}
ASSERT(Extent->Length >= SECTOR_SIZE);
DirtyLba = DirtyStart + DirtyLength;
DirtyLba = DirtyStart + Extent->Length;
if (List) {
List->Next = Extent;

2
media/doc/README.FSD
View file

@ -9,7 +9,7 @@ reactos/sdk/lib/fslib/btrfslib # Synced to 1.0.1
The following FSD are shared with: http://www.ext2fsd.com/
reactos/drivers/filesystems/ext2 # Synced to 0.68, with b7657e5, e7c1142, 785943f
reactos/drivers/filesystems/ext2 # Synced to 0.69
The following FSD are shared with: http://www.acc.umu.se/~bosse/