https://git.reactos.org/?p=reactos.git;a=commitdiff;h=a1d7e9936d8e58bc07ff2cc73a937ce845c7d542
commit a1d7e9936d8e58bc07ff2cc73a937ce845c7d542
Author: Pierre Schweitzer <pie...@reactos.org>
AuthorDate: Sun Nov 12 10:47:29 2017 +0100
[EXT2] Upgrade to 0.69
CORE-13980
---
drivers/filesystems/ext2/CMakeLists.txt | 2 +
drivers/filesystems/ext2/inc/ext2fs.h | 63 +-
drivers/filesystems/ext2/inc/linux/errno.h | 2 +
drivers/filesystems/ext2/inc/linux/ext4_xattr.h | 205 ++++
drivers/filesystems/ext2/inc/linux/fs.h | 19 -
drivers/filesystems/ext2/inc/linux/module.h | 2 +
drivers/filesystems/ext2/src/create.c | 190 +++-
drivers/filesystems/ext2/src/dirctl.c | 6 +
drivers/filesystems/ext2/src/dispatch.c | 6 +
drivers/filesystems/ext2/src/ea.c | 604 ++++++++++
drivers/filesystems/ext2/src/ext3/generic.c | 616 +++++++---
drivers/filesystems/ext2/src/ext3/recover.c | 7 +-
drivers/filesystems/ext2/src/ext4/ext4_extents.c | 1 +
drivers/filesystems/ext2/src/ext4/ext4_xattr.c | 1295 ++++++++++++++++++++++
drivers/filesystems/ext2/src/fastio.c | 5 +
drivers/filesystems/ext2/src/fileinfo.c | 34 +-
drivers/filesystems/ext2/src/flush.c | 94 +-
drivers/filesystems/ext2/src/fsctl.c | 5 +
drivers/filesystems/ext2/src/init.c | 8 +
drivers/filesystems/ext2/src/linux.c | 33 +-
drivers/filesystems/ext2/src/memory.c | 107 +-
drivers/filesystems/ext2/src/volinfo.c | 2 +-
drivers/filesystems/ext2/src/write.c | 18 +-
media/doc/README.FSD | 2 +-
24 files changed, 3027 insertions(+), 299 deletions(-)
diff --git a/drivers/filesystems/ext2/CMakeLists.txt
b/drivers/filesystems/ext2/CMakeLists.txt
index 4291b27a46..abc1c2489d 100644
--- a/drivers/filesystems/ext2/CMakeLists.txt
+++ b/drivers/filesystems/ext2/CMakeLists.txt
@@ -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
diff --git a/drivers/filesystems/ext2/inc/ext2fs.h
b/drivers/filesystems/ext2/inc/ext2fs.h
index 7792ed18ac..525a1d1bc9 100644
--- a/drivers/filesystems/ext2/inc/ext2fs.h
+++ b/drivers/filesystems/ext2/inc/ext2fs.h
@@ -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,
diff --git a/drivers/filesystems/ext2/inc/linux/errno.h
b/drivers/filesystems/ext2/inc/linux/errno.h
index 5173d2a6ae..13bcbf4832 100644
--- a/drivers/filesystems/ext2/inc/linux/errno.h
+++ b/drivers/filesystems/ext2/inc/linux/errno.h
@@ -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 */
diff --git a/drivers/filesystems/ext2/inc/linux/ext4_xattr.h
b/drivers/filesystems/ext2/inc/linux/ext4_xattr.h
new file mode 100644
index 0000000000..d57949cbea
--- /dev/null
+++ b/drivers/filesystems/ext2/inc/linux/ext4_xattr.h
@@ -0,0 +1,205 @@
+/*
+ * Copyright (c) 2015 Grzegorz Kostka (kostka.grzeg...@gmail.com)
+ * Copyright (c) 2015 Kaho Ng (ngkaho1...@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
+/**
+ * @}
+ */
diff --git a/drivers/filesystems/ext2/inc/linux/fs.h
b/drivers/filesystems/ext2/inc/linux/fs.h
index 52a8b3dc90..5da58f99a8 100644
--- a/drivers/filesystems/ext2/inc/linux/fs.h
+++ b/drivers/filesystems/ext2/inc/linux/fs.h
@@ -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 */
diff --git a/drivers/filesystems/ext2/inc/linux/module.h
b/drivers/filesystems/ext2/inc/linux/module.h
index 141e8fd694..65607b6e2f 100644
--- a/drivers/filesystems/ext2/inc/linux/module.h
+++ b/drivers/filesystems/ext2/inc/linux/module.h
@@ -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;
diff --git a/drivers/filesystems/ext2/src/create.c
b/drivers/filesystems/ext2/src/create.c
index 251343fe1f..01c5cfb0d5 100644
--- a/drivers/filesystems/ext2/src/create.c
+++ b/drivers/filesystems/ext2/src/create.c
@@ -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);
}
diff --git a/drivers/filesystems/ext2/src/dirctl.c
b/drivers/filesystems/ext2/src/dirctl.c
index b76385d073..668b9c23f6 100644
--- a/drivers/filesystems/ext2/src/dirctl.c
+++ b/drivers/filesystems/ext2/src/dirctl.c
@@ -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;
diff --git a/drivers/filesystems/ext2/src/dispatch.c
b/drivers/filesystems/ext2/src/dispatch.c
index 35e4fe2427..3e13af649a 100644
--- a/drivers/filesystems/ext2/src/dispatch.c
+++ b/drivers/filesystems/ext2/src/dispatch.c
@@ -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);
diff --git a/drivers/filesystems/ext2/src/ea.c
b/drivers/filesystems/ext2/src/ea.c
new file mode 100644
index 0000000000..2f7d4ce2bf
--- /dev/null
+++ b/drivers/filesystems/ext2/src/ea.c
@@ -0,0 +1,604 @@
+/*
+* COPYRIGHT: See COPYRIGHT.TXT
+* PROJECT: Ext2 File System Driver for Windows >= NT
+* FILE: ea.c
+* PROGRAMMER: Matt Wu <mat...@163.com> Kaho Ng <ngkaho1...@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;
+}
diff --git a/drivers/filesystems/ext2/src/ext3/generic.c
b/drivers/filesystems/ext2/src/ext3/generic.c
index 4e38352494..377f11f3a8 100644
--- a/drivers/filesystems/ext2/src/ext3/generic.c
+++ b/drivers/filesystems/ext2/src/ext3/generic.c
@@ -10,7 +10,7 @@
/* INCLUDES *****************************************************************/
#include "ext2fs.h"
-#include <linux/ext4.h>
+#include "linux/ext4.h"
/* GLOBALS ***************************************************************/
@@ -125,23 +125,77 @@ Ext2RefreshSuper (
}
VOID
-Ext2PutGroup(IN PEXT2_VCB Vcb)
+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)
+ 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)
+{
+ struct ext3_sb_info *sbi = &Vcb->sbi;
+ unsigned long i;
+
+
+ if (NULL == Vcb->sbi.s_gd) {
+ return;
+ }
+
+ 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;
-
- IO_STATUS_BLOCK IoStatus;
- LONGLONG Offset;
+ struct ext3_inode ext3i = {0};
+ 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
-Ext2ZeroBuffer( IN PEXT2_IRP_CONTEXT IrpContext,
+Ext2LoadBuffer( IN PEXT2_IRP_CONTEXT IrpContext,
IN PEXT2_VCB Vcb,
- IN LONGLONG Offset,
- IN ULONG Size )
+ IN LONGLONG offset,
+ IN ULONG size,
+ IN PVOID buf )
{
- 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;
_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;
+
+ 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 {
- CcUnpinData(Bcb);
- } _SEH2_END;
+ if (bh)
+ fini_bh(&bh);
+
+ } _SEH2_END;
return rc;
}
-#define SIZE_256K 0x40000
BOOLEAN
-Ext2SaveBuffer( IN PEXT2_IRP_CONTEXT IrpContext,
+Ext2ZeroBuffer( IN PEXT2_IRP_CONTEXT IrpContext,
IN PEXT2_VCB Vcb,
- IN LONGLONG Offset,
- IN ULONG Size,
- IN PVOID Buf )
+ IN LONGLONG offset,
+ IN ULONG size
+ )
{
- 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;
+ 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_TRY {
+ rc = TRUE;
+
+ } _SEH2_FINALLY {
+
+ if (bh)
+ fini_bh(&bh);
+
+ } _SEH2_END;
+
+ return rc;
+}
+
+
+BOOLEAN
+Ext2SaveBuffer( 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 = 0;
+
+ _SEH2_TRY {
+
+ while (size) {
- RtlCopyMemory(Buffer, Buf, Length);
- CcSetDirtyPinnedData(Bcb, NULL );
- SetFlag(Vcb->Volume->Flags, FO_FILE_MODIFIED);
+ sector_t block;
+ ULONG len = 0, delta = 0;
- rc = Ext2AddVcbExtent(Vcb, Offset, (LONGLONG)Length);
- if (!rc) {
+ 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();
- Ext2Sleep(100);
- rc = Ext2AddVcbExtent(Vcb, Offset, (LONGLONG)Length);
+ _SEH2_LEAVE;
}
- } _SEH2_FINALLY {
- CcUnpinData(Bcb);
- } _SEH2_END;
+ 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;
+ }
+ }
- Buf = (PUCHAR)Buf + Length;
- Offset = Offset + Length;
- Size = Size - Length;
- }
+ _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 +
diff --git a/drivers/filesystems/ext2/src/ext3/recover.c
b/drivers/filesystems/ext2/src/ext3/recover.c
index 4270c15e60..3ff79bc245 100644
--- a/drivers/filesystems/ext2/src/ext3/recover.c
+++ b/drivers/filesystems/ext2/src/ext3/recover.c
@@ -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;
}
diff --git a/drivers/filesystems/ext2/src/ext4/ext4_extents.c
b/drivers/filesystems/ext2/src/ext4/ext4_extents.c
index c23557e382..4ef64b4fd7 100644
--- a/drivers/filesystems/ext2/src/ext4/ext4_extents.c
+++ b/drivers/filesystems/ext2/src/ext4/ext4_extents.c
@@ -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)
diff --git a/drivers/filesystems/ext2/src/ext4/ext4_xattr.c
b/drivers/filesystems/ext2/src/ext4/ext4_xattr.c
new file mode 100644
index 0000000000..e1a26e94da
--- /dev/null
+++ b/drivers/filesystems/ext2/src/ext4/ext4_xattr.c
@@ -0,0 +1,1295 @@
+/*
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program 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 Licens
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-
+ */
+
+#include <ext2fs.h>
+#include <linux/module.h>
+#include <linux/ext4_xattr.h>
+
+static ext4_fsblk_t ext4_new_meta_blocks(void *icb, struct inode *inode,
+ ext4_fsblk_t goal,
+ unsigned int flags,
+ unsigned long *count, int *errp)
+{
+ NTSTATUS status;
+ ULONG blockcnt = (count) ? *count : 1;
+ ULONG block = 0;
+
+ status = Ext2NewBlock((PEXT2_IRP_CONTEXT)icb,
+ inode->i_sb->s_priv,
+ 0, (ULONG)goal,
+ &block,
+ &blockcnt);
+ if (count)
+ *count = blockcnt;
+
+ if (!NT_SUCCESS(status)) {
+ *errp = Ext2LinuxError(status);
+ return 0;
+ }
+ inode->i_blocks += (blockcnt * (inode->i_sb->s_blocksize >> 9));
+ return block;
+}
+
+static void ext4_free_blocks(void *icb, struct inode *inode,
+ ext4_fsblk_t block, int count, int flags)
+{
+ Ext2FreeBlock((PEXT2_IRP_CONTEXT)icb, inode->i_sb->s_priv,
(ULONG)block, count);
+ inode->i_blocks -= count * (inode->i_sb->s_blocksize >> 9);
+ return;
+}
+
+static inline ext4_fsblk_t ext4_inode_to_goal_block(struct inode *inode)
+{
+ PEXT2_VCB Vcb;
+ Vcb = inode->i_sb->s_priv;
+ return (inode->i_ino - 1) / BLOCKS_PER_GROUP;
+}
+
+#define NAME_HASH_SHIFT 5
+#define VALUE_HASH_SHIFT 16
+
+static inline void ext4_xattr_compute_hash(struct ext4_xattr_header *header,
+ struct ext4_xattr_entry *entry)
+{
+ __u32 hash = 0;
+ char *name = EXT4_XATTR_NAME(entry);
+ int n;
+
+ for (n = 0; n < entry->e_name_len; n++) {
+ hash = (hash << NAME_HASH_SHIFT) ^
+ (hash >> (8 * sizeof(hash) - NAME_HASH_SHIFT)) ^ *name++;
+ }
+
+ if (entry->e_value_block == 0 && entry->e_value_size != 0) {
+ __le32 *value =
+ (__le32 *)((char *)header +
le16_to_cpu(entry->e_value_offs));
+ for (n = (le32_to_cpu(entry->e_value_size) + EXT4_XATTR_ROUND)
>>
+ EXT4_XATTR_PAD_BITS;
+ n; n--) {
+ hash = (hash << VALUE_HASH_SHIFT) ^
+ (hash >> (8 * sizeof(hash) - VALUE_HASH_SHIFT)) ^
+ le32_to_cpu(*value++);
+ }
+ }
+ entry->e_hash = cpu_to_le32(hash);
+}
+
+#define BLOCK_HASH_SHIFT 16
+
+/*
+ * ext4_xattr_rehash()
+ *
+ * Re-compute the extended attribute hash value after an entry has changed.
+ */
+static void ext4_xattr_rehash(struct ext4_xattr_header *header,
+ struct ext4_xattr_entry *entry)
+{
+ struct ext4_xattr_entry *here;
+ __u32 hash = 0;
+
+ ext4_xattr_compute_hash(header, entry);
+ here = EXT4_XATTR_ENTRY(header + 1);
+ while (!EXT4_XATTR_IS_LAST_ENTRY(here)) {
+ if (!here->e_hash) {
+ /* Block is not shared if an entry's hash value == 0 */
+ hash = 0;
+ break;
+ }
+ hash = (hash << BLOCK_HASH_SHIFT) ^
+ (hash >> (8 * sizeof(hash) - BLOCK_HASH_SHIFT)) ^
+ le32_to_cpu(here->e_hash);
+ here = EXT4_XATTR_NEXT(here);
+ }
+ header->h_hash = cpu_to_le32(hash);
+}
+
+#if CONFIG_META_CSUM_ENABLE
+static __u32
+ext4_xattr_block_checksum(PEXT2_MCB inode_ref,
+ ext4_fsblk_t blocknr,
+ struct ext4_xattr_header *header)
+{
+ __u32 checksum = 0;
+ __u64 le64_blocknr = blocknr;
+ struct ext4_sblock *sb = &inode_ref->fs->sb;
+
+ if (ext4_sb_feature_ro_com(sb, EXT4_FRO_COM_METADATA_CSUM)) {
+ __u32 orig_checksum;
+
+ /* Preparation: temporarily set bg checksum to 0 */
+ orig_checksum = header->h_checksum;
+ header->h_checksum = 0;
+ /* First calculate crc32 checksum against fs uuid */
+ checksum = ext4_crc32c(EXT4_CRC32_INIT, sb->uuid,
+ sizeof(sb->uuid));
+ /* Then calculate crc32 checksum block number */
+ checksum = ext4_crc32c(checksum, &le64_blocknr,
+ sizeof(le64_blocknr));
+ /* Finally calculate crc32 checksum against
+ * the entire xattr block */
+ checksum = ext4_crc32c(checksum, header,
+ ext4_sb_get_block_size(sb));
+ header->h_checksum = orig_checksum;
+ }
+ return checksum;
+}
+#else
+#define ext4_xattr_block_checksum(...) 0
+#endif
+
+static void
+ext4_xattr_set_block_checksum(PEXT2_MCB inode_ref,
+ ext4_fsblk_t blocknr,
+ struct ext4_xattr_header *header)
+{
+ /* TODO: Need METADATA_CSUM supports. */
+ header->h_checksum = 0;
+}
+
+static int ext4_xattr_item_cmp(struct rb_node *_a,
+ struct rb_node *_b)
+{
+ int result;
+ struct ext4_xattr_item *a, *b;
+ a = container_of(_a, struct ext4_xattr_item, node);
+ a = container_of(_a, struct ext4_xattr_item, node);
+ b = container_of(_b, struct ext4_xattr_item, node);
+
+ if (a->is_data && !b->is_data)
+ return -1;
+
+ if (!a->is_data && b->is_data)
+ return 1;
+
+ result = a->name_index - b->name_index;
+ if (result)
+ return result;
+
+ if (a->name_len < b->name_len)
+ return -1;
+
+ if (a->name_len > b->name_len)
+ return 1;
+
+ return memcmp(a->name, b->name, a->name_len);
+}
+
+//
+// Red-black tree insert routine.
+//
+
+static struct ext4_xattr_item *
+ext4_xattr_item_search(struct ext4_xattr_ref *xattr_ref,
+ struct ext4_xattr_item *name)
+{
+ struct rb_node *new = xattr_ref->root.rb_node;
+
+ while (new) {
+ struct ext4_xattr_item *node =
+ container_of(new, struct ext4_xattr_item, node);
+ int result = ext4_xattr_item_cmp(&name->node, new);
+
+ if (result < 0)
+ new = new->rb_left;
+ else if (result > 0)
+ new = new->rb_right;
+ else
+ return node;
+
+ }
+
+ return NULL;
+}
+
+static void ext4_xattr_item_insert(struct ext4_xattr_ref *xattr_ref,
+ struct ext4_xattr_item *item)
+{
+ rb_insert(&xattr_ref->root, &item->node,
+ ext4_xattr_item_cmp);
+ list_add_tail(&item->list_node, &xattr_ref->ordered_list);
+}
+
+static void ext4_xattr_item_remove(struct ext4_xattr_ref *xattr_ref,
+ struct ext4_xattr_item *item)
+{
+ rb_erase(&item->node, &xattr_ref->root);
+ list_del_init(&item->list_node);
+}
+
+static struct ext4_xattr_item *
+ext4_xattr_item_alloc(__u8 name_index, const char *name, size_t name_len)
+{
+ struct ext4_xattr_item *item;
+ item = kzalloc(sizeof(struct ext4_xattr_item) + name_len, GFP_NOFS);
+ if (!item)
+ return NULL;
+
+ item->name_index = name_index;
+ item->name = (char *)(item + 1);
+ item->name_len = name_len;
+ item->data = NULL;
+ item->data_size = 0;
+ INIT_LIST_HEAD(&item->list_node);
+
+ memcpy(item->name, name, name_len);
+
+ if (name_index == EXT4_XATTR_INDEX_SYSTEM &&
+ name_len == 4 &&
+ !memcmp(name, "data", 4))
+ item->is_data = TRUE;
+ else
+ item->is_data = FALSE;
+
+ return item;
+}
+
+static int ext4_xattr_item_alloc_data(struct ext4_xattr_item *item,
+ const void *orig_data, size_t data_size)
+{
+ void *data = NULL;
+ ASSERT(!item->data);
+ data = kmalloc(data_size, GFP_NOFS);
+ if (!data)
+ return -ENOMEM;
+
+ if (orig_data)
+ memcpy(data, orig_data, data_size);
+
+ item->data = data;
+ item->data_size = data_size;
+ return 0;
+}
+
+static void ext4_xattr_item_free_data(struct ext4_xattr_item *item)
+{
+ ASSERT(item->data);
+ kfree(item->data);
+ item->data = NULL;
+ item->data_size = 0;
+}
+
+static int ext4_xattr_item_resize_data(struct ext4_xattr_item *item,
+ size_t new_data_size)
+{
+ if (new_data_size != item->data_size) {
+ void *new_data;
+ new_data = kmalloc(new_data_size, GFP_NOFS);
+ if (!new_data)
+ return -ENOMEM;
+
+ memcpy(new_data, item->data, item->data_size);
+ kfree(item->data);
+
+ item->data = new_data;
+ item->data_size = new_data_size;
+ }
+ return 0;
+}
+
+static void ext4_xattr_item_free(struct ext4_xattr_item *item)
+{
+ if (item->data)
+ ext4_xattr_item_free_data(item);
+
+ kfree(item);
+}
+
+static void *ext4_xattr_entry_data(struct ext4_xattr_ref *xattr_ref,
+ struct ext4_xattr_entry *entry,
+ BOOL in_inode)
+{
+ char *ret;
+ int block_size;
+ if (in_inode) {
+ struct ext4_xattr_ibody_header *header;
+ struct ext4_xattr_entry *first_entry;
+ int inode_size = xattr_ref->fs->InodeSize;
+ header = EXT4_XATTR_IHDR(xattr_ref->OnDiskInode);
+ first_entry = EXT4_XATTR_IFIRST(header);
+
+ ret = ((char *)first_entry + le16_to_cpu(entry->e_value_offs));
+ if (ret + EXT4_XATTR_SIZE(le32_to_cpu(entry->e_value_size)) -
+ (char *)xattr_ref->OnDiskInode > inode_size)
+ ret = NULL;
+
+ return ret;
+
+ }
+ block_size = xattr_ref->fs->BlockSize;
+ ret = ((char *)xattr_ref->block_bh->b_data +
le16_to_cpu(entry->e_value_offs));
+ if (ret + EXT4_XATTR_SIZE(le32_to_cpu(entry->e_value_size)) -
+ (char *)xattr_ref->block_bh->b_data > block_size)
+ ret = NULL;
+ return ret;
+}
+
+static int ext4_xattr_block_fetch(struct ext4_xattr_ref *xattr_ref)
+{
+ int ret = 0;
+ size_t size_rem;
+ void *data;
+ struct ext4_xattr_entry *entry = NULL;
+
+ ASSERT(xattr_ref->block_bh->b_data);
+ entry = EXT4_XATTR_BFIRST(xattr_ref->block_bh);
+
+ size_rem = xattr_ref->fs->BlockSize;
+ for (; size_rem > 0 && !EXT4_XATTR_IS_LAST_ENTRY(entry);
+ entry = EXT4_XATTR_NEXT(entry),
+ size_rem -= EXT4_XATTR_LEN(entry->e_name_len)) {
+ struct ext4_xattr_item *item;
+ char *e_name = EXT4_XATTR_NAME(entry);
+
+ data = ext4_xattr_entry_data(xattr_ref, entry, FALSE);
+ if (!data) {
+ ret = -EIO;
+ goto Finish;
+ }
+
+ item = ext4_xattr_item_alloc(entry->e_name_index, e_name,
+ (size_t)entry->e_name_len);
+ if (!item) {
+ ret = -ENOMEM;
+ goto Finish;
+ }
+ if (ext4_xattr_item_alloc_data(
+ item, data, le32_to_cpu(entry->e_value_size)) != 0) {
+ ext4_xattr_item_free(item);
+ ret = -ENOMEM;
+ goto Finish;
+ }
+ ext4_xattr_item_insert(xattr_ref, item);
+ xattr_ref->block_size_rem -=
+ EXT4_XATTR_SIZE(item->data_size) +
+ EXT4_XATTR_LEN(item->name_len);
+ xattr_ref->ea_size += EXT4_XATTR_SIZE(item->data_size) +
+ EXT4_XATTR_LEN(item->name_len);
+ }
+
+Finish:
+ return ret;
+}
+
+static int ext4_xattr_inode_fetch(struct ext4_xattr_ref *xattr_ref)
+{
+ void *data;
+ size_t size_rem;
+ int ret = 0;
+ struct ext4_xattr_ibody_header *header = NULL;
+ struct ext4_xattr_entry *entry = NULL;
+ int inode_size = xattr_ref->fs->InodeSize;
+
+ header = EXT4_XATTR_IHDR(xattr_ref->OnDiskInode);
+ entry = EXT4_XATTR_IFIRST(header);
+
+ size_rem = inode_size - EXT4_GOOD_OLD_INODE_SIZE -
+ xattr_ref->OnDiskInode->i_extra_isize;
+ for (; size_rem > 0 && !EXT4_XATTR_IS_LAST_ENTRY(entry);
+ entry = EXT4_XATTR_NEXT(entry),
+ size_rem -= EXT4_XATTR_LEN(entry->e_name_len)) {
+ struct ext4_xattr_item *item;
+ char *e_name = EXT4_XATTR_NAME(entry);
+
+ data = ext4_xattr_entry_data(xattr_ref, entry, TRUE);
+ if (!data) {
+ ret = -EIO;
+ goto Finish;
+ }
+
+ item = ext4_xattr_item_alloc(entry->e_name_index, e_name,
+ (size_t)entry->e_name_len);
+ if (!item) {
+ ret = -ENOMEM;
+ goto Finish;
+ }
+ if (ext4_xattr_item_alloc_data(
+ item, data, le32_to_cpu(entry->e_value_size)) != 0) {
+ ext4_xattr_item_free(item);
+ ret = -ENOMEM;
+ goto Finish;
+ }
+ item->in_inode = TRUE;
+ ext4_xattr_item_insert(xattr_ref, item);
+ xattr_ref->inode_size_rem -=
+ EXT4_XATTR_SIZE(item->data_size) +
+ EXT4_XATTR_LEN(item->name_len);
+ xattr_ref->ea_size += EXT4_XATTR_SIZE(item->data_size) +
+ EXT4_XATTR_LEN(item->name_len);
+ }
+
+Finish:
+ return ret;
+}
+
+static __s32 ext4_xattr_inode_space(struct ext4_xattr_ref *xattr_ref)
+{
+ int inode_size = xattr_ref->fs->InodeSize;
+ int size_rem = inode_size - EXT4_GOOD_OLD_INODE_SIZE -
+ xattr_ref->OnDiskInode->i_extra_isize;
+ return size_rem;
+}
+
+static __s32 ext4_xattr_block_space(struct ext4_xattr_ref *xattr_ref)
+{
+ return xattr_ref->fs->BlockSize;
+}
+
+static int ext4_xattr_fetch(struct ext4_xattr_ref *xattr_ref)
+{
+ int ret = 0;
+ int inode_size = xattr_ref->fs->InodeSize;
+ if (inode_size > EXT4_GOOD_OLD_INODE_SIZE) {
+ ret = ext4_xattr_inode_fetch(xattr_ref);
+ if (ret != 0)
+ return ret;
+ }
+
+ if (xattr_ref->block_loaded)
+ ret = ext4_xattr_block_fetch(xattr_ref);
+
+ xattr_ref->dirty = FALSE;
+ return ret;
+}
+
+static struct ext4_xattr_item *
+ext4_xattr_lookup_item(struct ext4_xattr_ref *xattr_ref, __u8 name_index,
+ const char *name, size_t name_len)
+{
+ struct ext4_xattr_item tmp = {
+ FALSE,
+ FALSE,
+ name_index,
+ (char *)name, /*won't touch this string*/
+ name_len,
+ };
+ if (name_index == EXT4_XATTR_INDEX_SYSTEM &&
+ name_len == 4 &&
+ !memcmp(name, "data", 4))
+ tmp.is_data = TRUE;
+
+ return ext4_xattr_item_search(xattr_ref, &tmp);
+}
+
+static struct ext4_xattr_item *
+ext4_xattr_insert_item(struct ext4_xattr_ref *xattr_ref, __u8 name_index,
+ const char *name, size_t name_len, const void *data,
+ size_t data_size,
+ int *err)
+{
+ struct ext4_xattr_item *item;
+ item = ext4_xattr_item_alloc(name_index, name, name_len);
+ if (!item) {
+ if (err)
+ *err = -ENOMEM;
+
+ return NULL;
+ }
+
+ item->in_inode = TRUE;
+ if (xattr_ref->inode_size_rem <
+ EXT4_XATTR_SIZE(data_size) +
+ EXT4_XATTR_LEN(item->name_len)) {
+ if (xattr_ref->block_size_rem <
+ EXT4_XATTR_SIZE(data_size) +
+ EXT4_XATTR_LEN(item->name_len)) {
+ if (err)
+ *err = -ENOSPC;
+
+ return NULL;
+ }
+
+ item->in_inode = FALSE;
+ }
+ if (ext4_xattr_item_alloc_data(item, data, data_size) != 0) {
+ ext4_xattr_item_free(item);
+ if (err)
+ *err = -ENOMEM;
+
+ return NULL;
+ }
+ ext4_xattr_item_insert(xattr_ref, item);
+ xattr_ref->ea_size +=
+ EXT4_XATTR_SIZE(item->data_size) + EXT4_XATTR_LEN(item->name_len);
+ if (item->in_inode) {
+ xattr_ref->inode_size_rem -=
+ EXT4_XATTR_SIZE(item->data_size) +
+ EXT4_XATTR_LEN(item->name_len);
+ } else {
+ xattr_ref->block_size_rem -=
+ EXT4_XATTR_SIZE(item->data_size) +
+ EXT4_XATTR_LEN(item->name_len);
+ }
+ xattr_ref->dirty = TRUE;
+ if (err)
+ *err = 0;
+
+ return item;
+}
+
+static struct ext4_xattr_item *
+ext4_xattr_insert_item_ordered(struct ext4_xattr_ref *xattr_ref, __u8
name_index,
+ const char *name, size_t name_len, const void *data,
+ size_t data_size,
+ int *err)
+{
+ struct ext4_xattr_item *item, *last_item = NULL;
+ item = ext4_xattr_item_alloc(name_index, name, name_len);
+ if (!item) {
+ if (err)
+ *err = -ENOMEM;
+
+ return NULL;
+ }
+
+ if (!list_empty(&xattr_ref->ordered_list))
+ last_item = list_entry(xattr_ref->ordered_list.prev,
+ struct ext4_xattr_item,
+ list_node);
+
+ item->in_inode = TRUE;
+ if ((xattr_ref->inode_size_rem <
+ EXT4_XATTR_SIZE(data_size) +
+ EXT4_XATTR_LEN(item->name_len))
+ ||
+ (last_item && !last_item->in_inode)) {
+ if (xattr_ref->block_size_rem <
+ EXT4_XATTR_SIZE(data_size) +
+ EXT4_XATTR_LEN(item->name_len)) {
+ if (err)
+ *err = -ENOSPC;
+
+ return NULL;
+ }
+
+ item->in_inode = FALSE;
+ }
+ if (ext4_xattr_item_alloc_data(item, data, data_size) != 0) {
+ ext4_xattr_item_free(item);
+ if (err)
+ *err = -ENOMEM;
+
+ return NULL;
+ }
+ ext4_xattr_item_insert(xattr_ref, item);
+ xattr_ref->ea_size +=
+ EXT4_XATTR_SIZE(item->data_size) +
EXT4_XATTR_LEN(item->name_len);
+ if (item->in_inode) {
+ xattr_ref->inode_size_rem -=
+ EXT4_XATTR_SIZE(item->data_size) +
+ EXT4_XATTR_LEN(item->name_len);
+ }
+ else {
+ xattr_ref->block_size_rem -=
+ EXT4_XATTR_SIZE(item->data_size) +
+ EXT4_XATTR_LEN(item->name_len);
+ }
+ xattr_ref->dirty = TRUE;
+ if (err)
+ *err = 0;
+
+ return item;
+}
+
+static int ext4_xattr_remove_item(struct ext4_xattr_ref *xattr_ref,
+ __u8 name_index, const char *name,
+ size_t name_len)
+{
+ int ret = -ENOENT;
+ struct ext4_xattr_item *item =
+ ext4_xattr_lookup_item(xattr_ref, name_index, name, name_len);
+ if (item) {
+ if (item == xattr_ref->iter_from) {
+ struct rb_node *next_node;
+ next_node = rb_next(&item->node);
+ if (next_node)
+ xattr_ref->iter_from =
+ container_of(next_node,
+ struct ext4_xattr_item,
+ node);
+ else
+ xattr_ref->iter_from = NULL;
+ }
+
+ xattr_ref->ea_size -= EXT4_XATTR_SIZE(item->data_size) +
+ EXT4_XATTR_LEN(item->name_len);
+
+ if (item->in_inode) {
+ xattr_ref->inode_size_rem +=
+ EXT4_XATTR_SIZE(item->data_size) +
+ EXT4_XATTR_LEN(item->name_len);
+ } else {
+ xattr_ref->block_size_rem +=
+ EXT4_XATTR_SIZE(item->data_size) +
+ EXT4_XATTR_LEN(item->name_len);
+ }
+
+ ext4_xattr_item_remove(xattr_ref, item);
+ ext4_xattr_item_free(item);
+ xattr_ref->dirty = TRUE;
+ ret = 0;
+ }
+ return ret;
+}
+
+static int ext4_xattr_resize_item(struct ext4_xattr_ref *xattr_ref,
+ struct ext4_xattr_item *item,
+ size_t new_data_size)
+{
+ int ret = 0;
+ BOOL to_inode = FALSE, to_block = FALSE;
+ size_t old_data_size = item->data_size;
+ size_t orig_room_size = item->in_inode ?
+ xattr_ref->inode_size_rem :
+ xattr_ref->block_size_rem;
+
+ /*
+ * Check if we can hold this entry in both in-inode and
+ * on-block form
+ *
+ * More complicated case: we do not allow entries stucking in
+ * the middle between in-inode space and on-block space, so
+ * the entry has to stay in either inode space or block space.
+ */
+ if (item->in_inode) {
+ if (xattr_ref->inode_size_rem +
+ EXT4_XATTR_SIZE(old_data_size) <
+ EXT4_XATTR_SIZE(new_data_size)) {
+ if (xattr_ref->block_size_rem <
+ EXT4_XATTR_SIZE(new_data_size) +
+ EXT4_XATTR_LEN(item->name_len))
+ return -ENOSPC;
+
+ to_block = TRUE;
+ }
+ } else {
+ if (xattr_ref->block_size_rem +
+ EXT4_XATTR_SIZE(old_data_size) <
+ EXT4_XATTR_SIZE(new_data_size)) {
+ if (xattr_ref->inode_size_rem <
+ EXT4_XATTR_SIZE(new_data_size) +
+ EXT4_XATTR_LEN(item->name_len))
+ return -ENOSPC;
+
+ to_inode = TRUE;
+ }
+ }
+ ret = ext4_xattr_item_resize_data(item, new_data_size);
+ if (ret)
+ return ret;
+
+ xattr_ref->ea_size =
+ xattr_ref->ea_size -
+ EXT4_XATTR_SIZE(old_data_size) +
+ EXT4_XATTR_SIZE(new_data_size);
+
+ /*
+ * This entry may originally lie in inode space or block space,
+ * and it is going to be transferred to another place.
+ */
+ if (to_block) {
+ xattr_ref->inode_size_rem +=
+ EXT4_XATTR_SIZE(old_data_size) +
+ EXT4_XATTR_LEN(item->name_len);
+ xattr_ref->block_size_rem -=
+ EXT4_XATTR_SIZE(new_data_size) +
+ EXT4_XATTR_LEN(item->name_len);
+ item->in_inode = FALSE;
+ } else if (to_inode) {
+ xattr_ref->block_size_rem +=
+ EXT4_XATTR_SIZE(old_data_size) +
+ EXT4_XATTR_LEN(item->name_len);
+ xattr_ref->inode_size_rem -=
+ EXT4_XATTR_SIZE(new_data_size) +
+ EXT4_XATTR_LEN(item->name_len);
+ item->in_inode = TRUE;
+ } else {
+ /*
+ * No need to transfer as there is enough space for the entry
+ * to stay in inode space or block space it used to be.
+ */
+ orig_room_size +=
+ EXT4_XATTR_SIZE(old_data_size);
+ orig_room_size -=
+ EXT4_XATTR_SIZE(new_data_size);
+ if (item->in_inode)
+ xattr_ref->inode_size_rem = orig_room_size;
+ else
+ xattr_ref->block_size_rem = orig_room_size;
+
+ }
+ xattr_ref->dirty = TRUE;
+ return ret;
+}
+
+void ext4_xattr_purge_items(struct ext4_xattr_ref *xattr_ref)
+{
+ struct rb_node *first_node;
+ struct ext4_xattr_item *item = NULL;
+ first_node = rb_first(&xattr_ref->root);
+ if (first_node)
+ item = container_of(first_node, struct ext4_xattr_item,
+ node);
+
+ while (item) {
+ struct rb_node *next_node;
+ struct ext4_xattr_item *next_item = NULL;
+ next_node = rb_next(&item->node);
+ if (next_node)
+ next_item = container_of(next_node, struct
ext4_xattr_item,
+ node);
+ else
+ next_item = NULL;
+
+ ext4_xattr_item_remove(xattr_ref, item);
+ ext4_xattr_item_free(item);
+
+ item = next_item;
+ }
+ xattr_ref->ea_size = 0;
+ if (ext4_xattr_inode_space(xattr_ref) <
+ sizeof(struct ext4_xattr_ibody_header))
+ xattr_ref->inode_size_rem = 0;
+ else
+ xattr_ref->inode_size_rem =
+ ext4_xattr_inode_space(xattr_ref) -
+ sizeof(struct ext4_xattr_ibody_header);
+
+ xattr_ref->block_size_rem =
+ ext4_xattr_block_space(xattr_ref) -
+ sizeof(struct ext4_xattr_header);
+}
+
+static int ext4_xattr_try_alloc_block(struct ext4_xattr_ref *xattr_ref)
+{
+ int ret = 0;
+
+ ext4_fsblk_t xattr_block = 0;
+ xattr_block = xattr_ref->inode_ref->Inode.i_file_acl;
+ if (!xattr_block) {
+ ext4_fsblk_t goal =
+ ext4_inode_to_goal_block(&xattr_ref->inode_ref->Inode);
+
+ xattr_block = ext4_new_meta_blocks(xattr_ref->IrpContext,
+ &xattr_ref->inode_ref->Inode,
+ goal, 0, NULL,
+ &ret);
+ if (ret != 0)
+ goto Finish;
+
+ xattr_ref->block_bh = extents_bwrite(&xattr_ref->fs->sb,
xattr_block);
+ if (!xattr_ref->block_bh) {
+ ext4_free_blocks(xattr_ref->IrpContext,
&xattr_ref->inode_ref->Inode,
+ xattr_block, 1, 0);
+ ret = -ENOMEM;
+ goto Finish;
+ }
+
+ xattr_ref->inode_ref->Inode.i_file_acl = xattr_block;
+ xattr_ref->IsOnDiskInodeDirty = TRUE;
+ xattr_ref->block_loaded = TRUE;
+ }
+
+Finish:
+ return ret;
+}
+
+static void ext4_xattr_try_free_block(struct ext4_xattr_ref *xattr_ref)
+{
+ ext4_fsblk_t xattr_block;
+ xattr_block = xattr_ref->inode_ref->Inode.i_file_acl;
+ xattr_ref->inode_ref->Inode.i_file_acl = 0;
+ extents_brelse(xattr_ref->block_bh);
+ xattr_ref->block_bh = NULL;
+ ext4_free_blocks(xattr_ref->IrpContext, &xattr_ref->inode_ref->Inode,
+ xattr_block, 1, 0);
+ xattr_ref->IsOnDiskInodeDirty = TRUE;
+ xattr_ref->block_loaded = FALSE;
+}
+
+static void ext4_xattr_set_block_header(struct ext4_xattr_ref *xattr_ref)
+{
+ struct ext4_xattr_header *block_header = NULL;
+ block_header = EXT4_XATTR_BHDR(xattr_ref->block_bh);
+
+ memset(block_header, 0, sizeof(struct ext4_xattr_header));
+ block_header->h_magic = EXT4_XATTR_MAGIC;
+ block_header->h_refcount = cpu_to_le32(1);
+ block_header->h_blocks = cpu_to_le32(1);
+}
+
+static void
+ext4_xattr_set_inode_entry(struct ext4_xattr_item *item,
+ struct ext4_xattr_ibody_header *ibody_header,
+ struct ext4_xattr_entry *entry, void *ibody_data_ptr)
+{
+ entry->e_name_len = (__u8)item->name_len;
+ entry->e_name_index = item->name_index;
+ entry->e_value_offs =
+ cpu_to_le16((char *)ibody_data_ptr - (char
*)EXT4_XATTR_IFIRST(ibody_header));
+ entry->e_value_block = 0;
+ entry->e_value_size = cpu_to_le32(item->data_size);
+}
+
+static void ext4_xattr_set_block_entry(struct ext4_xattr_item *item,
+ struct ext4_xattr_header *block_header,
+ struct ext4_xattr_entry *block_entry,
+ void *block_data_ptr)
+{
+ block_entry->e_name_len = (__u8)item->name_len;
+ block_entry->e_name_index = item->name_index;
+ block_entry->e_value_offs =
+ cpu_to_le16((char *)block_data_ptr - (char *)block_header);
+ block_entry->e_value_block = 0;
+ block_entry->e_value_size = cpu_to_le32(item->data_size);
+}
+
+static int ext4_xattr_write_to_disk(struct ext4_xattr_ref *xattr_ref)
+{
+ int ret = 0;
+ BOOL block_modified = FALSE;
+ void *ibody_data = NULL;
+ void *block_data = NULL;
+ size_t inode_size_rem, block_size_rem;
+ struct ext4_xattr_ibody_header *ibody_header = NULL;
+ struct ext4_xattr_header *block_header = NULL;
+ struct ext4_xattr_entry *entry = NULL;
+ struct ext4_xattr_entry *block_entry = NULL;
+ struct ext4_xattr_item *item = NULL;
+
+ inode_size_rem = ext4_xattr_inode_space(xattr_ref);
+ block_size_rem = ext4_xattr_block_space(xattr_ref);
+ if (inode_size_rem > sizeof(struct ext4_xattr_ibody_header)) {
+ ibody_header = EXT4_XATTR_IHDR(xattr_ref->OnDiskInode);
+ entry = EXT4_XATTR_IFIRST(ibody_header);
+ }
+
+ if (!xattr_ref->dirty)
+ goto Finish;
+ /* If there are enough spaces in the ibody EA table.*/
+ if (inode_size_rem > sizeof(struct ext4_xattr_ibody_header)) {
+ memset(ibody_header, 0, inode_size_rem);
+ ibody_header->h_magic = EXT4_XATTR_MAGIC;
+ ibody_data = (char *)ibody_header + inode_size_rem;
+ inode_size_rem -= sizeof(struct ext4_xattr_ibody_header);
+
+ xattr_ref->IsOnDiskInodeDirty = TRUE;
+ }
+ /* If we need an extra block to hold the EA entries*/
+ if (xattr_ref->ea_size > inode_size_rem) {
+ if (!xattr_ref->block_loaded) {
+ ret = ext4_xattr_try_alloc_block(xattr_ref);
+ if (ret != 0)
+ goto Finish;
+ }
+ memset(xattr_ref->block_bh->b_data, 0,
xattr_ref->fs->BlockSize);
+ block_header = EXT4_XATTR_BHDR(xattr_ref->block_bh);
+ block_entry = EXT4_XATTR_BFIRST(xattr_ref->block_bh);
+ ext4_xattr_set_block_header(xattr_ref);
+ block_data = (char *)block_header + block_size_rem;
+ block_size_rem -= sizeof(struct ext4_xattr_header);
+
+ extents_mark_buffer_dirty(xattr_ref->block_bh);
+ } else {
+ /* We don't need an extra block.*/
+ if (xattr_ref->block_loaded) {
+ block_header = EXT4_XATTR_BHDR(xattr_ref->block_bh);
+ le32_add_cpu(&block_header->h_refcount, -1);
+ if (!block_header->h_refcount) {
+ ext4_xattr_try_free_block(xattr_ref);
+ block_header = NULL;
+ } else {
+ block_entry =
+ EXT4_XATTR_BFIRST(xattr_ref->block_bh);
+ block_data =
+ (char *)block_header + block_size_rem;
+ block_size_rem -=
+ sizeof(struct ext4_xattr_header);
+ xattr_ref->inode_ref->Inode.i_file_acl = 0;
+
+ xattr_ref->IsOnDiskInodeDirty = TRUE;
+ extents_mark_buffer_dirty(xattr_ref->block_bh);
+ }
+ }
+ }
+
+ list_for_each_entry(item, &xattr_ref->ordered_list, struct
ext4_xattr_item, list_node) {
+ if (item->in_inode) {
+ ibody_data = (char *)ibody_data -
+ EXT4_XATTR_SIZE(item->data_size);
+ ext4_xattr_set_inode_entry(item, ibody_header, entry,
+ ibody_data);
+ memcpy(EXT4_XATTR_NAME(entry), item->name,
+ item->name_len);
+ memcpy(ibody_data, item->data, item->data_size);
+ entry = EXT4_XATTR_NEXT(entry);
+ inode_size_rem -= EXT4_XATTR_SIZE(item->data_size) +
+ EXT4_XATTR_LEN(item->name_len);
+
+ xattr_ref->IsOnDiskInodeDirty = TRUE;
+ continue;
+ }
+ if (EXT4_XATTR_SIZE(item->data_size) +
+ EXT4_XATTR_LEN(item->name_len) >
+ block_size_rem) {
+ ret = -ENOSPC;
+ DbgPrint("ext4_xattr.c: IMPOSSIBLE -ENOSPC AS WE DID
INSPECTION!\n");
+ ASSERT(0);
+ }
+ block_data =
+ (char *)block_data - EXT4_XATTR_SIZE(item->data_size);
+ ext4_xattr_set_block_entry(item, block_header, block_entry,
+ block_data);
+ memcpy(EXT4_XATTR_NAME(block_entry), item->name,
+ item->name_len);
+ memcpy(block_data, item->data, item->data_size);
+ ext4_xattr_compute_hash(block_header, block_entry);
+ block_entry = EXT4_XATTR_NEXT(block_entry);
+ block_size_rem -= EXT4_XATTR_SIZE(item->data_size) +
+ EXT4_XATTR_LEN(item->name_len);
+
+ block_modified = TRUE;
+ }
+ xattr_ref->dirty = FALSE;
+ if (block_modified) {
+ ext4_xattr_rehash(block_header,
+ EXT4_XATTR_BFIRST(xattr_ref->block_bh));
+ ext4_xattr_set_block_checksum(xattr_ref->inode_ref,
+ xattr_ref->block_bh->b_blocknr,
+ block_header);
+ extents_mark_buffer_dirty(xattr_ref->block_bh);
+ }
+
+Finish:
+ return ret;
+}
+
+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))
+{
+ struct ext4_xattr_item *item;
+ if (!ref->iter_from) {
+ struct list_head *first_node;
+ first_node = ref->ordered_list.next;
+ if (first_node && first_node != &ref->ordered_list) {
+ ref->iter_from =
+ list_entry(first_node,
+ struct ext4_xattr_item,
+ list_node);
+ }
+ }
+
+ item = ref->iter_from;
+ while (item) {
+ struct list_head *next_node;
+ struct ext4_xattr_item *next_item;
+ int ret = EXT4_XATTR_ITERATE_CONT;
+ next_node = item->list_node.next;
+ if (next_node && next_node != &ref->ordered_list)
+ next_item = list_entry(next_node, struct
ext4_xattr_item,
+ list_node);
+ else
+ next_item = NULL;
+ if (iter)
+ ret = iter(ref, item, !next_item);
+
+ if (ret != EXT4_XATTR_ITERATE_CONT) {
+ if (ret == EXT4_XATTR_ITERATE_STOP)
+ ref->iter_from = NULL;
+
+ break;
+ }
+ item = next_item;
+ }
+}
+
+void ext4_fs_xattr_iterate_reset(struct ext4_xattr_ref *ref)
+{
+ ref->iter_from = NULL;
+}
+
+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 ret = 0;
+ struct ext4_xattr_item *item =
+ ext4_xattr_lookup_item(ref, name_index, name, name_len);
+ if (replace) {
+ if (!item) {
+ ret = -ENODATA;
+ goto Finish;
+ }
+ if (item->data_size != data_size)
+ ret = ext4_xattr_resize_item(ref, item, data_size);
+
+ if (ret != 0) {
+ goto Finish;
+ }
+ memcpy(item->data, data, data_size);
+ } else {
+ if (item) {
+ ret = -EEXIST;
+ goto Finish;
+ }
+ item = ext4_xattr_insert_item(ref, name_index, name, name_len,
+ data, data_size, &ret);
+ }
+Finish:
+ return ret;
+}
+
+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 ret = 0;
+ struct ext4_xattr_item *item =
+ ext4_xattr_lookup_item(ref, name_index, name, name_len);
+ if (item) {
+ ret = -EEXIST;
+ goto Finish;
+ }
+ item = ext4_xattr_insert_item_ordered(ref, name_index, name, name_len,
+ data, data_size, &ret);
+Finish:
+ return ret;
+}
+
+int ext4_fs_remove_xattr(struct ext4_xattr_ref *ref, __u8 name_index,
+ const char *name, size_t name_len)
+{
+ return ext4_xattr_remove_item(ref, name_index, name, 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)
+{
+ int ret = 0;
+ size_t item_size = 0;
+ struct ext4_xattr_item *item =
+ ext4_xattr_lookup_item(ref, name_index, name, name_len);
+
+ if (!item) {
+ ret = -ENODATA;
+ goto Finish;
+ }
+ item_size = item->data_size;
+ if (buf_size > item_size)
+ buf_size = item_size;
+
+ if (buf)
+ memcpy(buf, item->data, buf_size);
+
+Finish:
+ if (data_size)
+ *data_size = item_size;
+
+ return ret;
+}
+
+int ext4_fs_get_xattr_ref(PEXT2_IRP_CONTEXT IrpContext, PEXT2_VCB fs,
PEXT2_MCB inode_ref,
+ struct ext4_xattr_ref *ref)
+{
+ int rc;
+ ext4_fsblk_t xattr_block;
+ xattr_block = inode_ref->Inode.i_file_acl;
+ memset(&ref->root, 0, sizeof(struct rb_root));
+ ref->ea_size = 0;
+ ref->iter_from = NULL;
+ if (xattr_block) {
+ ref->block_bh = extents_bread(&fs->sb, xattr_block);
+ if (!ref->block_bh)
+ return -EIO;
+
+ ref->block_loaded = TRUE;
+ } else
+ ref->block_loaded = FALSE;
+
+ ref->inode_ref = inode_ref;
+ ref->fs = fs;
+ INIT_LIST_HEAD(&ref->ordered_list);
+
+ ref->OnDiskInode = Ext2AllocateInode(fs);
+ if (!ref->OnDiskInode) {
+ if (xattr_block) {
+ extents_brelse(ref->block_bh);
+ ref->block_bh = NULL;
+ }
+ return -ENOMEM;
+ }
+ if (!Ext2LoadInodeXattr(fs, &inode_ref->Inode, ref->OnDiskInode)) {
+ if (xattr_block) {
+ extents_brelse(ref->block_bh);
+ ref->block_bh = NULL;
+ }
+
+ Ext2DestroyInode(fs, ref->OnDiskInode);
+ return -EIO;
+ }
+ ref->IsOnDiskInodeDirty = FALSE;
+
+ if (ext4_xattr_inode_space(ref) <
+ sizeof(struct ext4_xattr_ibody_header) +
+ sizeof(__u32))
+ ref->inode_size_rem = 0;
+ else {
+ ref->inode_size_rem =
+ ext4_xattr_inode_space(ref) -
+ sizeof(struct ext4_xattr_ibody_header);
+ }
+
+ ref->block_size_rem =
+ ext4_xattr_block_space(ref) -
+ sizeof(struct ext4_xattr_header) -
+ sizeof(__u32);
+
+ rc = ext4_xattr_fetch(ref);
+ if (rc != 0) {
+ ext4_xattr_purge_items(ref);
+ if (xattr_block) {
+ extents_brelse(ref->block_bh);
+ ref->block_bh = NULL;
+ }
+
+ Ext2DestroyInode(fs, ref->OnDiskInode);
+ return rc;
+ }
+ ref->IrpContext = IrpContext;
+ return 0;
+}
+
+int ext4_fs_put_xattr_ref(struct ext4_xattr_ref *ref)
+{
+ int ret;
+ sector_t orig_file_acl = ref->inode_ref->Inode.i_file_acl;
+ ret = ext4_xattr_write_to_disk(ref);
+ if (ref->IsOnDiskInodeDirty) {
+ ASSERT(ref->fs->InodeSize > EXT4_GOOD_OLD_INODE_SIZE);
+
+ /* As we may do block allocation in ext4_xattr_write_to_disk */
+ if (ret)
+ ref->inode_ref->Inode.i_file_acl = orig_file_acl;
+
+ if (!ret) {
+ ret = Ext2SaveInode(ref->IrpContext, ref->fs,
&ref->inode_ref->Inode)
+ ? 0 : -EIO;
+ if (!ret) {
+ ret = Ext2SaveInodeXattr(ref->IrpContext,
+ ref->fs,
+ &ref->inode_ref->Inode,
+ ref->OnDiskInode)
+ ? 0 : -EIO;
+ }
+ }
+ ref->IsOnDiskInodeDirty = FALSE;
+ }
+ if (ref->block_loaded) {
+ if (!ret)
+ extents_brelse(ref->block_bh);
+ else
+ extents_bforget(ref->block_bh);
+
+ ref->block_bh = NULL;
+ ref->block_loaded = FALSE;
+ }
+ ext4_xattr_purge_items(ref);
+ Ext2DestroyInode(ref->fs, ref->OnDiskInode);
+ ref->OnDiskInode = NULL;
+ ref->inode_ref = NULL;
+ ref->fs = NULL;
+ return ret;
+}
+
+struct xattr_prefix {
+ const char *prefix;
+ __u8 name_index;
+};
+
+static const struct xattr_prefix prefix_tbl[] = {
+ {"user.", EXT4_XATTR_INDEX_USER},
+ {"system.posix_acl_access", EXT4_XATTR_INDEX_POSIX_ACL_ACCESS},
+ {"system.posix_acl_default", EXT4_XATTR_INDEX_POSIX_ACL_DEFAULT},
+ {"trusted.", EXT4_XATTR_INDEX_TRUSTED},
+ {"security.", EXT4_XATTR_INDEX_SECURITY},
+ {"system.", EXT4_XATTR_INDEX_SYSTEM},
+ {"system.richacl", EXT4_XATTR_INDEX_RICHACL},
+ {NULL, 0},
+};
+
+const char *ext4_extract_xattr_name(const char *full_name, size_t
full_name_len,
+ __u8 *name_index, size_t *name_len,
+ BOOL *found)
+{
+ int i;
+ ASSERT(name_index);
+ ASSERT(found);
+
+ *found = FALSE;
+
+ if (!full_name_len) {
+ if (name_len)
+ *name_len = 0;
+
+ return NULL;
+ }
+
+ for (i = 0; prefix_tbl[i].prefix; i++) {
+ size_t prefix_len = strlen(prefix_tbl[i].prefix);
+ if (full_name_len >= prefix_len &&
+ !memcmp(full_name, prefix_tbl[i].prefix, prefix_len)) {
+ BOOL require_name =
+ prefix_tbl[i].prefix[prefix_len - 1] == '.';
+ *name_index = prefix_tbl[i].name_index;
+ if (name_len)
+ *name_len = full_name_len - prefix_len;
+
+ if (!(full_name_len - prefix_len) && require_name)
+ return NULL;
+
+ *found = TRUE;
+ if (require_name)
+ return full_name + prefix_len;
+
+ return NULL;
+ }
+ }
+ if (name_len)
+ *name_len = 0;
+
+ return NULL;
+}
+
+const char *ext4_get_xattr_name_prefix(__u8 name_index,
+ size_t *ret_prefix_len)
+{
+ int i;
+
+ for (i = 0; prefix_tbl[i].prefix; i++) {
+ size_t prefix_len = strlen(prefix_tbl[i].prefix);
+ if (prefix_tbl[i].name_index == name_index) {
+ if (ret_prefix_len)
+ *ret_prefix_len = prefix_len;
+
+ return prefix_tbl[i].prefix;
+ }
+ }
+ if (ret_prefix_len)
+ *ret_prefix_len = 0;
+
+ return NULL;
+}
diff --git a/drivers/filesystems/ext2/src/fastio.c
b/drivers/filesystems/ext2/src/fastio.c
index 70dc2be09b..ea62543bfe 100644
--- a/drivers/filesystems/ext2/src/fastio.c
+++ b/drivers/filesystems/ext2/src/fastio.c
@@ -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;
}
diff --git a/drivers/filesystems/ext2/src/fileinfo.c
b/drivers/filesystems/ext2/src/fileinfo.c
index cfc016bbf8..a9aeb8975a 100644
--- a/drivers/filesystems/ext2/src/fileinfo.c
+++ b/drivers/filesystems/ext2/src/fileinfo.c
@@ -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);
diff --git a/drivers/filesystems/ext2/src/flush.c
b/drivers/filesystems/ext2/src/flush.c
index d57a3b1294..c3e3dcd162 100644
--- a/drivers/filesystems/ext2/src/flush.c
+++ b/drivers/filesystems/ext2/src/flush.c
@@ -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)
diff --git a/drivers/filesystems/ext2/src/fsctl.c
b/drivers/filesystems/ext2/src/fsctl.c
index 731e018e61..0216528155 100644
--- a/drivers/filesystems/ext2/src/fsctl.c
+++ b/drivers/filesystems/ext2/src/fsctl.c
@@ -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);
diff --git a/drivers/filesystems/ext2/src/init.c
b/drivers/filesystems/ext2/src/init.c
index eb0dfc8602..4e968de423 100644
--- a/drivers/filesystems/ext2/src/init.c
+++ b/drivers/filesystems/ext2/src/init.c
@@ -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)
diff --git a/drivers/filesystems/ext2/src/linux.c
b/drivers/filesystems/ext2/src/linux.c
index f65e0b5e8b..4fb73ff5f8 100644
--- a/drivers/filesystems/ext2/src/linux.c
+++ b/drivers/filesystems/ext2/src/linux.c
@@ -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
//
diff --git a/drivers/filesystems/ext2/src/memory.c
b/drivers/filesystems/ext2/src/memory.c
index 6678579a94..8915dfeccb 100644
--- a/drivers/filesystems/ext2/src/memory.c
+++ b/drivers/filesystems/ext2/src/memory.c
@@ -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))) {
- } else {
+ Ext2RemoveMcb(Vcb, Mcb);
+ ClearLongFlag(Mcb->Flags, MCB_VCB_LINK);
+ Ext2DerefXcb(&Vcb->NumOfMcb);
- InsertTailList(&Vcb->McbList, &Mcb->Link);
- Mcb = NULL;
+ /* attach all Mcb into a chain*/
+ if (Head) {
+ ASSERT(Tail != NULL);
+ Tail->Next = Mcb;
+ Tail = Mcb;
+ } else {
+ 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);
diff --git a/drivers/filesystems/ext2/src/volinfo.c
b/drivers/filesystems/ext2/src/volinfo.c
index 8840482787..ce6aad31ed 100644
--- a/drivers/filesystems/ext2/src/volinfo.c
+++ b/drivers/filesystems/ext2/src/volinfo.c
@@ -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;
}
diff --git a/drivers/filesystems/ext2/src/write.c
b/drivers/filesystems/ext2/src/write.c
index 6dec4c41e3..6f7d51aa9a 100644
--- a/drivers/filesystems/ext2/src/write.c
+++ b/drivers/filesystems/ext2/src/write.c
@@ -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;
diff --git a/media/doc/README.FSD b/media/doc/README.FSD
index 14c6d60eca..c2ad019051 100644
--- a/media/doc/README.FSD
+++ b/media/doc/README.FSD
@@ -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/
