[fireball] 43644: [fastfat_new] - Fix an incorrectly placed closing bracket which resulted in ignoring almost all actions when performing relative open. This results in a massive reformatting of FatiCreate.
20 Oct
2009
20 Oct
'09
12:03 p.m.
Author: fireball
Date: Tue Oct 20 14:03:51 2009
New Revision: 43644
URL: http://svn.reactos.org/svn/reactos?rev=43644&view=rev
Log:
[fastfat_new]
- Fix an incorrectly placed closing bracket which resulted in ignoring almost all actions
when performing relative open. This results in a massive reformatting of FatiCreate.
Modified:
trunk/reactos/drivers/filesystems/fastfat_new/create.c
Modified: trunk/reactos/drivers/filesystems/fastfat_new/create.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/drivers/filesystems/fastfa…
==============================================================================
--- trunk/reactos/drivers/filesystems/fastfat_new/create.c [iso-8859-1] (original)
+++ trunk/reactos/drivers/filesystems/fastfat_new/create.c [iso-8859-1] Tue Oct 20
14:03:51 2009
@@ -605,262 +605,47 @@
ParentDcb = Vcb->RootDcb;
DPRINT("ParentDcb %p\n", ParentDcb);
}
-
- /* Check for backslash at the end */
- if (FileName.Length &&
- FileName.Buffer[FileName.Length / sizeof(WCHAR) - 1] == L'\\')
- {
- /* Cut it out */
- FileName.Length -= sizeof(WCHAR);
-
- /* Remember we cut it */
- EndBackslash = TRUE;
- }
-
- /* Ensure the name is set */
- if (!ParentDcb->FullFileName.Buffer)
- {
- /* Set it if it's missing */
- FatSetFullFileNameInFcb(IrpContext, ParentDcb);
- }
-
- /* Check max path length */
- if (ParentDcb->FullFileName.Length + FileName.Length + sizeof(WCHAR) <=
FileName.Length)
- {
- DPRINT1("Max length is way off\n");
- Iosb.Status = STATUS_OBJECT_NAME_INVALID;
- ASSERT(FALSE);
- }
-
- /* Loop through FCBs to find a good one */
- while (TRUE)
- {
- Fcb = ParentDcb;
-
- /* Dissect the name */
- RemainingPart = FileName;
- while (RemainingPart.Length)
- {
- FsRtlDissectName(RemainingPart, &FirstName, &NextName);
-
- /* Check for validity */
- if ((NextName.Length && NextName.Buffer[0] == L'\\') ||
- (NextName.Length > 255 * sizeof(WCHAR)))
- {
- /* The name is invalid */
- DPRINT1("Invalid name found\n");
- Iosb.Status = STATUS_OBJECT_NAME_INVALID;
- ASSERT(FALSE);
- }
-
- /* Convert the name to ANSI */
- AnsiFirstName.Buffer = ExAllocatePool(PagedPool, FirstName.Length);
- AnsiFirstName.Length = 0;
- AnsiFirstName.MaximumLength = FirstName.Length;
- Status = RtlUpcaseUnicodeStringToCountedOemString(&AnsiFirstName,
&FirstName, FALSE);
-
- if (!NT_SUCCESS(Status))
- {
- DPRINT1("RtlUpcaseUnicodeStringToCountedOemString() failed with
0x%08x\n", Status);
- ASSERT(FALSE);
- NextFcb = NULL;
- AnsiFirstName.Length = 0;
- }
- else
- {
- /* Find the coresponding FCB */
- NextFcb = FatFindFcb(IrpContext,
- &Fcb->Dcb.SplayLinksAnsi,
- (PSTRING)&AnsiFirstName,
- &OpenedAsDos);
- }
-
- /* If nothing found - try with unicode */
- if (!NextFcb && Fcb->Dcb.SplayLinksUnicode)
- {
- FileNameUpcased.Buffer = FsRtlAllocatePool(PagedPool,
FirstName.Length);
- FileNameUpcased.Length = 0;
- FileNameUpcased.MaximumLength = FirstName.Length;
-
- /* Downcase and then upcase to normalize it */
- Status = RtlDowncaseUnicodeString(&FileNameUpcased,
&FirstName, FALSE);
- Status = RtlUpcaseUnicodeString(&FileNameUpcased,
&FileNameUpcased, FALSE);
-
- /* Try to find FCB again using unicode name */
- NextFcb = FatFindFcb(IrpContext,
- &Fcb->Dcb.SplayLinksUnicode,
- (PSTRING)&FileNameUpcased,
- &OpenedAsDos);
- }
-
- /* Move to the next FCB */
- if (NextFcb)
- {
- Fcb = NextFcb;
- RemainingPart = NextName;
- }
-
- /* Break out of this loop if nothing can be found */
- if (!NextFcb ||
- NextName.Length == 0 ||
- FatNodeType(NextFcb) == FAT_NTC_FCB)
- {
- break;
- }
- }
-
- /* Ensure remaining name doesn't start from a backslash */
- if (RemainingPart.Length &&
- RemainingPart.Buffer[0] == L'\\')
- {
- /* Cut it */
- RemainingPart.Buffer++;
- RemainingPart.Length -= sizeof(WCHAR);
- }
-
- if (Fcb->Condition == FcbGood)
- {
- /* Good FCB, break out of the loop */
- break;
- }
- else
- {
- ASSERT(FALSE);
- }
- }
-
- /* We have a valid FCB now */
- if (!RemainingPart.Length)
- {
- /* Check for target dir open */
- if (OpenTargetDirectory)
- {
- DPRINT1("Opening target dir is missing\n");
- ASSERT(FALSE);
- }
-
- /* Check this FCB's type */
- if (FatNodeType(Fcb) == FAT_NTC_ROOT_DCB ||
- FatNodeType(Fcb) == FAT_NTC_DCB)
- {
- /* Open a directory */
- if (NonDirectoryFile)
- {
- /* Forbidden */
- Iosb.Status = STATUS_FILE_IS_A_DIRECTORY;
- ASSERT(FALSE);
- return Iosb.Status;
- }
-
- /* Open existing DCB */
- Iosb = FatiOpenExistingDcb(IrpContext,
- FileObject,
- Vcb,
- Fcb,
- DesiredAccess,
- ShareAccess,
- CreateDisposition,
- NoEaKnowledge,
- DeleteOnClose);
-
- /* Save information */
- Irp->IoStatus.Information = Iosb.Information;
-
- /* Unlock VCB */
- FatReleaseVcb(IrpContext, Vcb);
-
- /* Complete the request */
- FatCompleteRequest(IrpContext, Irp, Iosb.Status);
-
- return Iosb.Status;
- }
- else if (FatNodeType(Fcb) == FAT_NTC_FCB)
- {
- /* Open a file */
- if (OpenDirectory)
- {
- /* Forbidden */
- Iosb.Status = STATUS_NOT_A_DIRECTORY;
- ASSERT(FALSE);
- return Iosb.Status;
- }
-
- /* Check for trailing backslash */
- if (EndBackslash)
- {
- /* Forbidden */
- Iosb.Status = STATUS_OBJECT_NAME_INVALID;
- ASSERT(FALSE);
- return Iosb.Status;
- }
-
- Iosb = FatiOpenExistingFcb(IrpContext,
- FileObject,
- Vcb,
- Fcb,
- DesiredAccess,
- ShareAccess,
- AllocationSize,
- EaBuffer,
- EaLength,
- FileAttributes,
- CreateDisposition,
- NoEaKnowledge,
- DeleteOnClose,
- OpenedAsDos,
- &OplockPostIrp);
-
- /* Check if it's pending */
- if (Iosb.Status != STATUS_PENDING)
- {
- /* In case of success set cache supported flag */
- if (NT_SUCCESS(Iosb.Status) && !NoIntermediateBuffering)
- {
- SetFlag(FileObject->Flags, FO_CACHE_SUPPORTED);
- }
-
- /* Save information */
- Irp->IoStatus.Information = Iosb.Information;
-
- /* Unlock VCB */
- FatReleaseVcb(IrpContext, Vcb);
-
- /* Complete the request */
- FatCompleteRequest(IrpContext, Irp, Iosb.Status);
-
- return Iosb.Status;
- }
- else
- {
- /* Queue this IRP */
- UNIMPLEMENTED;
- ASSERT(FALSE);
- }
- }
- else
- {
- /* Unexpected FCB type */
- KeBugCheckEx(/*FAT_FILE_SYSTEM*/0x23, __LINE__, (ULONG_PTR)Fcb, 0, 0);
- }
- }
-
- /* During parsing we encountered a part which has no attached FCB/DCB.
- Check that the parent is really DCB and not FCB */
- if (FatNodeType(Fcb) != FAT_NTC_ROOT_DCB &&
- FatNodeType(Fcb) != FAT_NTC_DCB)
- {
- DPRINT1("Weird FCB node type %x, expected DCB or root DCB\n",
FatNodeType(Fcb));
- ASSERT(FALSE);
- }
-
- /* Create additional DCBs for all path items */
- ParentDcb = Fcb;
- while (TRUE)
- {
- FsRtlDissectName(RemainingPart, &FirstName, &RemainingPart);
+ }
+
+ /* Check for backslash at the end */
+ if (FileName.Length &&
+ FileName.Buffer[FileName.Length / sizeof(WCHAR) - 1] == L'\\')
+ {
+ /* Cut it out */
+ FileName.Length -= sizeof(WCHAR);
+
+ /* Remember we cut it */
+ EndBackslash = TRUE;
+ }
+
+ /* Ensure the name is set */
+ if (!ParentDcb->FullFileName.Buffer)
+ {
+ /* Set it if it's missing */
+ FatSetFullFileNameInFcb(IrpContext, ParentDcb);
+ }
+
+ /* Check max path length */
+ if (ParentDcb->FullFileName.Length + FileName.Length + sizeof(WCHAR) <=
FileName.Length)
+ {
+ DPRINT1("Max length is way off\n");
+ Iosb.Status = STATUS_OBJECT_NAME_INVALID;
+ ASSERT(FALSE);
+ }
+
+ /* Loop through FCBs to find a good one */
+ while (TRUE)
+ {
+ Fcb = ParentDcb;
+
+ /* Dissect the name */
+ RemainingPart = FileName;
+ while (RemainingPart.Length)
+ {
+ FsRtlDissectName(RemainingPart, &FirstName, &NextName);
/* Check for validity */
- if ((RemainingPart.Length && RemainingPart.Buffer[0] ==
L'\\') ||
+ if ((NextName.Length && NextName.Buffer[0] == L'\\') ||
(NextName.Length > 255 * sizeof(WCHAR)))
{
/* The name is invalid */
@@ -877,55 +662,143 @@
if (!NT_SUCCESS(Status))
{
+ DPRINT1("RtlUpcaseUnicodeStringToCountedOemString() failed with
0x%08x\n", Status);
ASSERT(FALSE);
- }
-
- DPRINT("FirstName %wZ, RemainingPart %wZ\n", &FirstName,
&RemainingPart);
-
- /* Break if came to the end */
- if (!RemainingPart.Length) break;
-
- /* Create a DCB for this entry */
- ParentDcb = FatCreateDcb(IrpContext,
- Vcb,
- ParentDcb,
- NULL);
-
- /* Set its name */
- FatSetFullNameInFcb(ParentDcb, &FirstName);
- }
-
- /* Try to open it and get a result, saying if this is a dir or a file */
- FfError = FatiTryToOpen(FileObject, Vcb);
-
- /* Check if we need to open target directory */
+ NextFcb = NULL;
+ AnsiFirstName.Length = 0;
+ }
+ else
+ {
+ /* Find the coresponding FCB */
+ NextFcb = FatFindFcb(IrpContext,
+ &Fcb->Dcb.SplayLinksAnsi,
+ (PSTRING)&AnsiFirstName,
+ &OpenedAsDos);
+ }
+
+ /* If nothing found - try with unicode */
+ if (!NextFcb && Fcb->Dcb.SplayLinksUnicode)
+ {
+ FileNameUpcased.Buffer = FsRtlAllocatePool(PagedPool, FirstName.Length);
+ FileNameUpcased.Length = 0;
+ FileNameUpcased.MaximumLength = FirstName.Length;
+
+ /* Downcase and then upcase to normalize it */
+ Status = RtlDowncaseUnicodeString(&FileNameUpcased, &FirstName,
FALSE);
+ Status = RtlUpcaseUnicodeString(&FileNameUpcased,
&FileNameUpcased, FALSE);
+
+ /* Try to find FCB again using unicode name */
+ NextFcb = FatFindFcb(IrpContext,
+ &Fcb->Dcb.SplayLinksUnicode,
+ (PSTRING)&FileNameUpcased,
+ &OpenedAsDos);
+ }
+
+ /* Move to the next FCB */
+ if (NextFcb)
+ {
+ Fcb = NextFcb;
+ RemainingPart = NextName;
+ }
+
+ /* Break out of this loop if nothing can be found */
+ if (!NextFcb ||
+ NextName.Length == 0 ||
+ FatNodeType(NextFcb) == FAT_NTC_FCB)
+ {
+ break;
+ }
+ }
+
+ /* Ensure remaining name doesn't start from a backslash */
+ if (RemainingPart.Length &&
+ RemainingPart.Buffer[0] == L'\\')
+ {
+ /* Cut it */
+ RemainingPart.Buffer++;
+ RemainingPart.Length -= sizeof(WCHAR);
+ }
+
+ if (Fcb->Condition == FcbGood)
+ {
+ /* Good FCB, break out of the loop */
+ break;
+ }
+ else
+ {
+ ASSERT(FALSE);
+ }
+ }
+
+ /* We have a valid FCB now */
+ if (!RemainingPart.Length)
+ {
+ /* Check for target dir open */
if (OpenTargetDirectory)
{
- // TODO: Open target directory
- UNIMPLEMENTED;
- }
-
- /* Check, if path is a directory or a file */
- if (FfError == FF_ERR_FILE_OBJECT_IS_A_DIR)
- {
+ DPRINT1("Opening target dir is missing\n");
+ ASSERT(FALSE);
+ }
+
+ /* Check this FCB's type */
+ if (FatNodeType(Fcb) == FAT_NTC_ROOT_DCB ||
+ FatNodeType(Fcb) == FAT_NTC_DCB)
+ {
+ /* Open a directory */
if (NonDirectoryFile)
{
- DPRINT1("Can't open dir as a file\n");
-
- /* Unlock VCB */
- FatReleaseVcb(IrpContext, Vcb);
-
- /* Complete the request */
+ /* Forbidden */
Iosb.Status = STATUS_FILE_IS_A_DIRECTORY;
- FatCompleteRequest(IrpContext, Irp, Iosb.Status);
+ ASSERT(FALSE);
return Iosb.Status;
}
- /* Open this directory */
- Iosb = FatiOpenExistingDir(IrpContext,
+ /* Open existing DCB */
+ Iosb = FatiOpenExistingDcb(IrpContext,
FileObject,
Vcb,
- ParentDcb,
+ Fcb,
+ DesiredAccess,
+ ShareAccess,
+ CreateDisposition,
+ NoEaKnowledge,
+ DeleteOnClose);
+
+ /* Save information */
+ Irp->IoStatus.Information = Iosb.Information;
+
+ /* Unlock VCB */
+ FatReleaseVcb(IrpContext, Vcb);
+
+ /* Complete the request */
+ FatCompleteRequest(IrpContext, Irp, Iosb.Status);
+
+ return Iosb.Status;
+ }
+ else if (FatNodeType(Fcb) == FAT_NTC_FCB)
+ {
+ /* Open a file */
+ if (OpenDirectory)
+ {
+ /* Forbidden */
+ Iosb.Status = STATUS_NOT_A_DIRECTORY;
+ ASSERT(FALSE);
+ return Iosb.Status;
+ }
+
+ /* Check for trailing backslash */
+ if (EndBackslash)
+ {
+ /* Forbidden */
+ Iosb.Status = STATUS_OBJECT_NAME_INVALID;
+ ASSERT(FALSE);
+ return Iosb.Status;
+ }
+
+ Iosb = FatiOpenExistingFcb(IrpContext,
+ FileObject,
+ Vcb,
+ Fcb,
DesiredAccess,
ShareAccess,
AllocationSize,
@@ -933,50 +806,177 @@
EaLength,
FileAttributes,
CreateDisposition,
- DeleteOnClose);
-
- Irp->IoStatus.Information = Iosb.Information;
+ NoEaKnowledge,
+ DeleteOnClose,
+ OpenedAsDos,
+ &OplockPostIrp);
+
+ /* Check if it's pending */
+ if (Iosb.Status != STATUS_PENDING)
+ {
+ /* In case of success set cache supported flag */
+ if (NT_SUCCESS(Iosb.Status) && !NoIntermediateBuffering)
+ {
+ SetFlag(FileObject->Flags, FO_CACHE_SUPPORTED);
+ }
+
+ /* Save information */
+ Irp->IoStatus.Information = Iosb.Information;
+
+ /* Unlock VCB */
+ FatReleaseVcb(IrpContext, Vcb);
+
+ /* Complete the request */
+ FatCompleteRequest(IrpContext, Irp, Iosb.Status);
+
+ return Iosb.Status;
+ }
+ else
+ {
+ /* Queue this IRP */
+ UNIMPLEMENTED;
+ ASSERT(FALSE);
+ }
+ }
+ else
+ {
+ /* Unexpected FCB type */
+ KeBugCheckEx(/*FAT_FILE_SYSTEM*/0x23, __LINE__, (ULONG_PTR)Fcb, 0, 0);
+ }
+ }
+
+ /* During parsing we encountered a part which has no attached FCB/DCB.
+ Check that the parent is really DCB and not FCB */
+ if (FatNodeType(Fcb) != FAT_NTC_ROOT_DCB &&
+ FatNodeType(Fcb) != FAT_NTC_DCB)
+ {
+ DPRINT1("Weird FCB node type %x, expected DCB or root DCB\n",
FatNodeType(Fcb));
+ ASSERT(FALSE);
+ }
+
+ /* Create additional DCBs for all path items */
+ ParentDcb = Fcb;
+ while (TRUE)
+ {
+ FsRtlDissectName(RemainingPart, &FirstName, &RemainingPart);
+
+ /* Check for validity */
+ if ((RemainingPart.Length && RemainingPart.Buffer[0] == L'\\')
||
+ (NextName.Length > 255 * sizeof(WCHAR)))
+ {
+ /* The name is invalid */
+ DPRINT1("Invalid name found\n");
+ Iosb.Status = STATUS_OBJECT_NAME_INVALID;
+ ASSERT(FALSE);
+ }
+
+ /* Convert the name to ANSI */
+ AnsiFirstName.Buffer = ExAllocatePool(PagedPool, FirstName.Length);
+ AnsiFirstName.Length = 0;
+ AnsiFirstName.MaximumLength = FirstName.Length;
+ Status = RtlUpcaseUnicodeStringToCountedOemString(&AnsiFirstName,
&FirstName, FALSE);
+
+ if (!NT_SUCCESS(Status))
+ {
+ ASSERT(FALSE);
+ }
+
+ DPRINT("FirstName %wZ, RemainingPart %wZ\n", &FirstName,
&RemainingPart);
+
+ /* Break if came to the end */
+ if (!RemainingPart.Length) break;
+
+ /* Create a DCB for this entry */
+ ParentDcb = FatCreateDcb(IrpContext,
+ Vcb,
+ ParentDcb,
+ NULL);
+
+ /* Set its name */
+ FatSetFullNameInFcb(ParentDcb, &FirstName);
+ }
+
+ /* Try to open it and get a result, saying if this is a dir or a file */
+ FfError = FatiTryToOpen(FileObject, Vcb);
+
+ /* Check if we need to open target directory */
+ if (OpenTargetDirectory)
+ {
+ // TODO: Open target directory
+ UNIMPLEMENTED;
+ }
+
+ /* Check, if path is a directory or a file */
+ if (FfError == FF_ERR_FILE_OBJECT_IS_A_DIR)
+ {
+ if (NonDirectoryFile)
+ {
+ DPRINT1("Can't open dir as a file\n");
/* Unlock VCB */
FatReleaseVcb(IrpContext, Vcb);
/* Complete the request */
- FatCompleteRequest(IrpContext, Irp, Iosb.Status);
-
- return Iosb.Status;
- }
-
- /* If end backslash here, then it's definately not permitted,
- since we're opening files here */
- if (EndBackslash)
- {
- /* Unlock VCB */
- FatReleaseVcb(IrpContext, Vcb);
-
- /* Complete the request */
- Iosb.Status = STATUS_OBJECT_NAME_INVALID;
+ Iosb.Status = STATUS_FILE_IS_A_DIRECTORY;
FatCompleteRequest(IrpContext, Irp, Iosb.Status);
return Iosb.Status;
}
- /* Try to open the file */
- Iosb = FatiOpenExistingFile(IrpContext,
- FileObject,
- Vcb,
- ParentDcb,
- DesiredAccess,
- ShareAccess,
- AllocationSize,
- EaBuffer,
- EaLength,
- FileAttributes,
- CreateDisposition,
- FALSE,
- DeleteOnClose,
- OpenedAsDos);
+ /* Open this directory */
+ Iosb = FatiOpenExistingDir(IrpContext,
+ FileObject,
+ Vcb,
+ ParentDcb,
+ DesiredAccess,
+ ShareAccess,
+ AllocationSize,
+ EaBuffer,
+ EaLength,
+ FileAttributes,
+ CreateDisposition,
+ DeleteOnClose);
Irp->IoStatus.Information = Iosb.Information;
- }
+
+ /* Unlock VCB */
+ FatReleaseVcb(IrpContext, Vcb);
+
+ /* Complete the request */
+ FatCompleteRequest(IrpContext, Irp, Iosb.Status);
+
+ return Iosb.Status;
+ }
+
+ /* If end backslash here, then it's definately not permitted,
+ since we're opening files here */
+ if (EndBackslash)
+ {
+ /* Unlock VCB */
+ FatReleaseVcb(IrpContext, Vcb);
+
+ /* Complete the request */
+ Iosb.Status = STATUS_OBJECT_NAME_INVALID;
+ FatCompleteRequest(IrpContext, Irp, Iosb.Status);
+ return Iosb.Status;
+ }
+
+ /* Try to open the file */
+ Iosb = FatiOpenExistingFile(IrpContext,
+ FileObject,
+ Vcb,
+ ParentDcb,
+ DesiredAccess,
+ ShareAccess,
+ AllocationSize,
+ EaBuffer,
+ EaLength,
+ FileAttributes,
+ CreateDisposition,
+ FALSE,
+ DeleteOnClose,
+ OpenedAsDos);
+
+ Irp->IoStatus.Information = Iosb.Information;
/* Unlock VCB */
FatReleaseVcb(IrpContext, Vcb);
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