[pschweitzer] 64610: [NTFS] - Remove magic value usage in NtfsDumpFileAttributes() - Implement GetFileNameFromRecord() which returns the $FILE_NAME attribute from a FILE record - On record lookup, ...
8 Oct
2014
8 Oct
'14
7:12 p.m.
Author: pschweitzer
Date: Wed Oct 8 19:12:48 2014
New Revision: 64610
URL: http://svn.reactos.org/svn/reactos?rev=64610&view=rev
Log:
[NTFS]
- Remove magic value usage in NtfsDumpFileAttributes()
- Implement GetFileNameFromRecord() which returns the $FILE_NAME attribute from a FILE
record
- On record lookup, also return the MFT index of the found record
- Finally implement NtfsMakeFCBFromDirEntry() which allows creating a FCB from a dir
entry. It is still incomplete though, it doesn't copy any data yet from the entry
Modified:
trunk/reactos/drivers/filesystems/ntfs/attrib.c
trunk/reactos/drivers/filesystems/ntfs/fcb.c
trunk/reactos/drivers/filesystems/ntfs/mft.c
trunk/reactos/drivers/filesystems/ntfs/ntfs.h
Modified: trunk/reactos/drivers/filesystems/ntfs/attrib.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/drivers/filesystems/ntfs/a…
==============================================================================
--- trunk/reactos/drivers/filesystems/ntfs/attrib.c [iso-8859-1] (original)
+++ trunk/reactos/drivers/filesystems/ntfs/attrib.c [iso-8859-1] Wed Oct 8 19:12:48 2014
@@ -278,7 +278,7 @@
Attribute = (PNTFS_ATTR_RECORD)((ULONG_PTR)FileRecord +
FileRecord->AttributeOffset);
while (Attribute < (PNTFS_ATTR_RECORD)((ULONG_PTR)FileRecord +
FileRecord->BytesInUse) &&
- Attribute->Type != (ATTRIBUTE_TYPE)-1)
+ Attribute->Type != AttributeEnd)
{
NtfsDumpAttribute(Attribute);
@@ -286,4 +286,22 @@
}
}
+PFILENAME_ATTRIBUTE
+GetFileNameFromRecord(PFILE_RECORD_HEADER FileRecord)
+{
+ PNTFS_ATTR_RECORD Attribute;
+
+ Attribute = (PNTFS_ATTR_RECORD)((ULONG_PTR)FileRecord +
FileRecord->AttributeOffset);
+ while (Attribute < (PNTFS_ATTR_RECORD)((ULONG_PTR)FileRecord +
FileRecord->BytesInUse) &&
+ Attribute->Type != AttributeEnd)
+ {
+ if (Attribute->Type == AttributeFileName)
+ return (PFILENAME_ATTRIBUTE)((ULONG_PTR)Attribute +
Attribute->Resident.ValueOffset);
+
+ Attribute = (PNTFS_ATTR_RECORD)((ULONG_PTR)Attribute + Attribute->Length);
+ }
+
+ return NULL;
+}
+
/* EOF */
Modified: trunk/reactos/drivers/filesystems/ntfs/fcb.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/drivers/filesystems/ntfs/f…
==============================================================================
--- trunk/reactos/drivers/filesystems/ntfs/fcb.c [iso-8859-1] (original)
+++ trunk/reactos/drivers/filesystems/ntfs/fcb.c [iso-8859-1] Wed Oct 8 19:12:48 2014
@@ -354,57 +354,53 @@
NTSTATUS
NtfsMakeFCBFromDirEntry(PNTFS_VCB Vcb,
PNTFS_FCB DirectoryFCB,
- PWSTR Name,
+ PUNICODE_STRING Name,
PFILE_RECORD_HEADER Record,
+ ULONGLONG MFTIndex,
PNTFS_FCB * fileFCB)
{
-#if 0
- WCHAR pathName[MAX_PATH];
- PFCB rcFCB;
- ULONG Size;
-
- if (Name [0] != 0 && wcslen (DirectoryFCB->PathName) +
- sizeof(WCHAR) + wcslen (Name) > MAX_PATH)
- {
- return(STATUS_OBJECT_NAME_INVALID);
- }
-
- wcscpy(pathName, DirectoryFCB->PathName);
- if (!NtfsFCBIsRoot(DirectoryFCB))
- {
- wcscat(pathName, L"\\");
- }
-
- if (Name[0] != 0)
- {
- wcscat(pathName, Name);
- }
- else
- {
- WCHAR entryName[MAX_PATH];
-
- NtfsGetDirEntryName(Vcb, Record, entryName);
- wcscat(pathName, entryName);
- }
-
- rcFCB = NtfsCreateFCB(pathName, Vcb);
- memcpy(&rcFCB->Entry, Record, sizeof(DIR_RECORD));
-
- Size = rcFCB->Entry.DataLengthL;
-
- rcFCB->RFCB.FileSize.QuadPart = Size;
- rcFCB->RFCB.ValidDataLength.QuadPart = Size;
- rcFCB->RFCB.AllocationSize.QuadPart = ROUND_UP(Size, BLOCKSIZE);
-// DPRINT1("%S %d %d\n", longName, Size,
(ULONG)rcFCB->RFCB.AllocationSize.QuadPart);
- NtfsFCBInitializeCache(Vcb, rcFCB);
- rcFCB->RefCount++;
- NtfsAddFCBToTable(Vcb, rcFCB);
- *fileFCB = rcFCB;
-
- return(STATUS_SUCCESS);
-#else
- return STATUS_NOT_IMPLEMENTED;
-#endif
+ WCHAR pathName[MAX_PATH];
+ PFILENAME_ATTRIBUTE FileName;
+ PNTFS_FCB rcFCB;
+
+ DPRINT1("NtfsMakeFCBFromDirEntry(%p, %p, %wZ, %p, %p)\n", Vcb,
DirectoryFCB, Name, Record, fileFCB);
+
+ FileName = GetFileNameFromRecord(Record);
+ if (!FileName)
+ {
+ return STATUS_OBJECT_NAME_NOT_FOUND; // Not sure that's the best here
+ }
+
+ if (Name->Buffer[0] != 0 && wcslen(DirectoryFCB->PathName) +
+ sizeof(WCHAR) + Name->Length / sizeof(WCHAR) > MAX_PATH)
+ {
+ return STATUS_OBJECT_NAME_INVALID;
+ }
+
+ wcscpy(pathName, DirectoryFCB->PathName);
+ if (!NtfsFCBIsRoot(DirectoryFCB))
+ {
+ wcscat(pathName, L"\\");
+ }
+ wcscat(pathName, Name->Buffer);
+
+ rcFCB = NtfsCreateFCB(pathName, Vcb);
+ if (!rcFCB)
+ {
+ return STATUS_INSUFFICIENT_RESOURCES;
+ }
+
+ rcFCB->RFCB.FileSize.QuadPart = FileName->DataSize;
+ rcFCB->RFCB.ValidDataLength.QuadPart = FileName->DataSize;
+ rcFCB->RFCB.AllocationSize.QuadPart = FileName->AllocatedSize;
+
+ NtfsFCBInitializeCache(Vcb, rcFCB);
+ rcFCB->RefCount = 1;
+ rcFCB->MFTIndex = MFTIndex;
+ NtfsAddFCBToTable(Vcb, rcFCB);
+ *fileFCB = rcFCB;
+
+ return STATUS_SUCCESS;
}
@@ -460,18 +456,21 @@
UNICODE_STRING File;
PFILE_RECORD_HEADER FileRecord;
PNTFS_ATTR_CONTEXT DataContext;
+ ULONGLONG MFTIndex;
+
+ DPRINT1("NtfsDirFindFile(%p, %p, %S, %p)\n", Vcb, DirectoryFcb, FileToFind,
FoundFCB);
*FoundFCB = NULL;
RtlInitUnicodeString(&File, FileToFind);
CurrentDir = DirectoryFcb->MFTIndex;
- Status = NtfsLookupFileAt(Vcb, &File, &FileRecord, &DataContext,
CurrentDir);
+ Status = NtfsLookupFileAt(Vcb, &File, &FileRecord, &DataContext,
&MFTIndex, CurrentDir);
if (!NT_SUCCESS(Status))
{
return Status;
}
- Status = NtfsMakeFCBFromDirEntry(Vcb, DirectoryFcb, FileToFind, FileRecord,
FoundFCB);
+ Status = NtfsMakeFCBFromDirEntry(Vcb, DirectoryFcb, &File, FileRecord, MFTIndex,
FoundFCB);
ExFreePoolWithTag(FileRecord, TAG_NTFS);
return Status;
Modified: trunk/reactos/drivers/filesystems/ntfs/mft.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/drivers/filesystems/ntfs/m…
==============================================================================
--- trunk/reactos/drivers/filesystems/ntfs/mft.c [iso-8859-1] (original)
+++ trunk/reactos/drivers/filesystems/ntfs/mft.c [iso-8859-1] Wed Oct 8 19:12:48 2014
@@ -649,6 +649,7 @@
PUNICODE_STRING PathName,
PFILE_RECORD_HEADER *FileRecord,
PNTFS_ATTR_CONTEXT *DataContext,
+ PULONGLONG MFTIndex,
ULONGLONG CurrentMFTIndex)
{
UNICODE_STRING Current, Remaining;
@@ -693,6 +694,8 @@
ExFreePoolWithTag(FileRecord, TAG_NTFS);
return Status;
}
+
+ *MFTIndex = CurrentMFTIndex;
return STATUS_SUCCESS;
}
@@ -701,8 +704,9 @@
NtfsLookupFile(PDEVICE_EXTENSION Vcb,
PUNICODE_STRING PathName,
PFILE_RECORD_HEADER *FileRecord,
- PNTFS_ATTR_CONTEXT *DataContext)
-{
- return NtfsLookupFileAt(Vcb, PathName, FileRecord, DataContext, NTFS_FILE_ROOT);
+ PNTFS_ATTR_CONTEXT *DataContext,
+ PULONGLONG MFTIndex)
+{
+ return NtfsLookupFileAt(Vcb, PathName, FileRecord, DataContext, MFTIndex,
NTFS_FILE_ROOT);
}
/* EOF */
Modified: trunk/reactos/drivers/filesystems/ntfs/ntfs.h
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/drivers/filesystems/ntfs/n…
==============================================================================
--- trunk/reactos/drivers/filesystems/ntfs/ntfs.h [iso-8859-1] (original)
+++ trunk/reactos/drivers/filesystems/ntfs/ntfs.h [iso-8859-1] Wed Oct 8 19:12:48 2014
@@ -433,6 +433,8 @@
VOID
NtfsDumpFileAttributes(PFILE_RECORD_HEADER FileRecord);
+PFILENAME_ATTRIBUTE
+GetFileNameFromRecord(PFILE_RECORD_HEADER FileRecord);
/* blockdev.c */
@@ -632,13 +634,15 @@
NtfsLookupFile(PDEVICE_EXTENSION Vcb,
PUNICODE_STRING PathName,
PFILE_RECORD_HEADER *FileRecord,
- PNTFS_ATTR_CONTEXT *DataContext);
+ PNTFS_ATTR_CONTEXT *DataContext,
+ PULONGLONG MFTIndex);
NTSTATUS
NtfsLookupFileAt(PDEVICE_EXTENSION Vcb,
PUNICODE_STRING PathName,
PFILE_RECORD_HEADER *FileRecord,
PNTFS_ATTR_CONTEXT *DataContext,
+ PULONGLONG MFTIndex,
ULONGLONG CurrentMFTIndex);
/* misc.c */
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