ReactOS 0.4.15-dev-7131-ge4d03f4
Macros | Functions | Variables
dirwr.c File Reference
#include "vfat.h"
#include <debug.h>
Include dependency graph for dirwr.c:

Go to the source code of this file.

Macros

#define NDEBUG
 

Functions

NTSTATUS vfatFCBInitializeCacheFromVolume (PVCB vcb, PVFATFCB fcb)
 
NTSTATUS VfatUpdateEntry (IN PDEVICE_EXTENSION DeviceExt, IN PVFATFCB pFcb)
 
NTSTATUS vfatRenameEntry (IN PDEVICE_EXTENSION DeviceExt, IN PVFATFCB pFcb, IN PUNICODE_STRING FileName, IN BOOLEAN CaseChangeOnly)
 
BOOLEAN vfatFindDirSpace (IN PDEVICE_EXTENSION DeviceExt, IN PVFATFCB pDirFcb, IN ULONG nbSlots, OUT PULONG start)
 
static NTSTATUS FATAddEntry (IN PDEVICE_EXTENSION DeviceExt, IN PUNICODE_STRING NameU, IN PVFATFCB *Fcb, IN PVFATFCB ParentFcb, IN ULONG RequestedOptions, IN UCHAR ReqAttr, IN PVFAT_MOVE_CONTEXT MoveContext)
 
static NTSTATUS FATXAddEntry (IN PDEVICE_EXTENSION DeviceExt, IN PUNICODE_STRING NameU, IN PVFATFCB *Fcb, IN PVFATFCB ParentFcb, IN ULONG RequestedOptions, IN UCHAR ReqAttr, IN PVFAT_MOVE_CONTEXT MoveContext)
 
static NTSTATUS FATDelEntry (IN PDEVICE_EXTENSION DeviceExt, IN PVFATFCB pFcb, OUT PVFAT_MOVE_CONTEXT MoveContext)
 
static NTSTATUS FATXDelEntry (IN PDEVICE_EXTENSION DeviceExt, IN PVFATFCB pFcb, OUT PVFAT_MOVE_CONTEXT MoveContext)
 
NTSTATUS VfatMoveEntry (IN PDEVICE_EXTENSION DeviceExt, IN PVFATFCB pFcb, IN PUNICODE_STRING FileName, IN PVFATFCB ParentFcb)
 
BOOLEAN FATXIsDirectoryEmpty (PDEVICE_EXTENSION DeviceExt, PVFATFCB Fcb)
 
BOOLEAN FATIsDirectoryEmpty (PDEVICE_EXTENSION DeviceExt, PVFATFCB Fcb)
 
NTSTATUS FATGetNextDirEntry (PVOID *pContext, PVOID *pPage, PVFATFCB pDirFcb, PVFAT_DIRENTRY_CONTEXT DirContext, BOOLEAN First)
 
NTSTATUS FATXGetNextDirEntry (PVOID *pContext, PVOID *pPage, PVFATFCB pDirFcb, PVFAT_DIRENTRY_CONTEXT DirContext, BOOLEAN First)
 

Variables

VFAT_DISPATCH FatXDispatch
 
VFAT_DISPATCH FatDispatch
 

Macro Definition Documentation

◆ NDEBUG

#define NDEBUG

Definition at line 14 of file dirwr.c.

Function Documentation

◆ FATAddEntry()

static NTSTATUS FATAddEntry ( IN PDEVICE_EXTENSION  DeviceExt,
IN PUNICODE_STRING  NameU,
IN PVFATFCB *  Fcb,
IN PVFATFCB  ParentFcb,
IN ULONG  RequestedOptions,
IN UCHAR  ReqAttr,
IN PVFAT_MOVE_CONTEXT  MoveContext 
)
static

Definition at line 403 of file dirwr.c.

411{
412 PVOID Context = NULL;
413 PFAT_DIR_ENTRY pFatEntry;
414 slot *pSlots;
415 USHORT nbSlots = 0, j;
416 PUCHAR Buffer;
417 BOOLEAN needTilde = FALSE, needLong = FALSE;
418 BOOLEAN BaseAllLower, BaseAllUpper;
419 BOOLEAN ExtensionAllLower, ExtensionAllUpper;
420 BOOLEAN InExtension;
421 BOOLEAN IsDirectory;
422 WCHAR c;
423 ULONG CurrentCluster;
424 LARGE_INTEGER SystemTime, FileOffset;
425 NTSTATUS Status = STATUS_SUCCESS;
426 ULONG size;
427 long i;
428
429 OEM_STRING NameA;
430 CHAR aName[13];
431 BOOLEAN IsNameLegal;
432 BOOLEAN SpacesFound;
433
434 VFAT_DIRENTRY_CONTEXT DirContext;
435 WCHAR LongNameBuffer[LONGNAME_MAX_LENGTH + 1];
436 WCHAR ShortNameBuffer[13];
437
438 DPRINT("addEntry: Name='%wZ', Dir='%wZ'\n", NameU, &ParentFcb->PathNameU);
439
440 DirContext.LongNameU = *NameU;
441 IsDirectory = BooleanFlagOn(RequestedOptions, FILE_DIRECTORY_FILE);
442
443 /* nb of entry needed for long name+normal entry */
444 nbSlots = (DirContext.LongNameU.Length / sizeof(WCHAR) + 12) / 13 + 1;
445 DPRINT("NameLen= %u, nbSlots =%u\n", DirContext.LongNameU.Length / sizeof(WCHAR), nbSlots);
446 Buffer = ExAllocatePoolWithTag(NonPagedPool, (nbSlots - 1) * sizeof(FAT_DIR_ENTRY), TAG_DIRENT);
447 if (Buffer == NULL)
448 {
449 return STATUS_INSUFFICIENT_RESOURCES;
450 }
451 RtlZeroMemory(Buffer, (nbSlots - 1) * sizeof(FAT_DIR_ENTRY));
452 pSlots = (slot *) Buffer;
453
454 NameA.Buffer = aName;
455 NameA.Length = 0;
456 NameA.MaximumLength = sizeof(aName);
457
458 DirContext.DeviceExt = DeviceExt;
459 DirContext.ShortNameU.Buffer = ShortNameBuffer;
460 DirContext.ShortNameU.Length = 0;
461 DirContext.ShortNameU.MaximumLength = sizeof(ShortNameBuffer);
462
463 RtlZeroMemory(&DirContext.DirEntry.Fat, sizeof(FAT_DIR_ENTRY));
464
465 IsNameLegal = RtlIsNameLegalDOS8Dot3(&DirContext.LongNameU, &NameA, &SpacesFound);
466
467 if (!IsNameLegal || SpacesFound)
468 {
469 GENERATE_NAME_CONTEXT NameContext;
470 VFAT_DIRENTRY_CONTEXT SearchContext;
471 WCHAR ShortSearchName[13];
472 needTilde = TRUE;
473 needLong = TRUE;
474 RtlZeroMemory(&NameContext, sizeof(GENERATE_NAME_CONTEXT));
475 SearchContext.DeviceExt = DeviceExt;
476 SearchContext.LongNameU.Buffer = LongNameBuffer;
477 SearchContext.LongNameU.MaximumLength = sizeof(LongNameBuffer);
478 SearchContext.ShortNameU.Buffer = ShortSearchName;
479 SearchContext.ShortNameU.MaximumLength = sizeof(ShortSearchName);
480
481 for (i = 0; i < 100; i++)
482 {
483 RtlGenerate8dot3Name(&DirContext.LongNameU, FALSE, &NameContext, &DirContext.ShortNameU);
484 DirContext.ShortNameU.Buffer[DirContext.ShortNameU.Length / sizeof(WCHAR)] = 0;
485 SearchContext.DirIndex = 0;
486 Status = FindFile(DeviceExt, ParentFcb, &DirContext.ShortNameU, &SearchContext, TRUE);
487 if (!NT_SUCCESS(Status))
488 {
489 break;
490 }
491 else if (MoveContext)
492 {
493 ASSERT(*Fcb);
494 if (strncmp((char *)SearchContext.DirEntry.Fat.ShortName, (char *)(*Fcb)->entry.Fat.ShortName, 11) == 0)
495 {
496 if (MoveContext->InPlace)
497 {
498 ASSERT(SearchContext.DirEntry.Fat.FileSize == MoveContext->FileSize);
499 break;
500 }
501 }
502 }
503 }
504 if (i == 100) /* FIXME : what to do after this ? */
505 {
506 ExFreePoolWithTag(Buffer, TAG_DIRENT);
507 return STATUS_UNSUCCESSFUL;
508 }
509 IsNameLegal = RtlIsNameLegalDOS8Dot3(&DirContext.ShortNameU, &NameA, &SpacesFound);
510 }
511 else
512 {
513 BaseAllLower = BaseAllUpper = TRUE;
514 ExtensionAllLower = ExtensionAllUpper = TRUE;
515 InExtension = FALSE;
516 for (i = 0; i < DirContext.LongNameU.Length / sizeof(WCHAR); i++)
517 {
518 c = DirContext.LongNameU.Buffer[i];
519 if (c >= L'A' && c <= L'Z')
520 {
521 if (InExtension)
522 ExtensionAllLower = FALSE;
523 else
524 BaseAllLower = FALSE;
525 }
526 else if (c >= L'a' && c <= L'z')
527 {
528 if (InExtension)
529 ExtensionAllUpper = FALSE;
530 else
531 BaseAllUpper = FALSE;
532 }
533 else if (c > 0x7f)
534 {
535 needLong = TRUE;
536 break;
537 }
538
539 if (c == L'.')
540 {
541 InExtension = TRUE;
542 }
543 }
544
545 if ((!BaseAllLower && !BaseAllUpper) ||
546 (!ExtensionAllLower && !ExtensionAllUpper))
547 {
548 needLong = TRUE;
549 }
550
551 RtlUpcaseUnicodeString(&DirContext.ShortNameU, &DirContext.LongNameU, FALSE);
552 DirContext.ShortNameU.Buffer[DirContext.ShortNameU.Length / sizeof(WCHAR)] = 0;
553 }
554 aName[NameA.Length] = 0;
555 DPRINT("'%s', '%wZ', needTilde=%u, needLong=%u\n",
556 aName, &DirContext.LongNameU, needTilde, needLong);
557 memset(DirContext.DirEntry.Fat.ShortName, ' ', 11);
558 for (i = 0; i < 8 && aName[i] && aName[i] != '.'; i++)
559 {
560 DirContext.DirEntry.Fat.Filename[i] = aName[i];
561 }
562 if (aName[i] == '.')
563 {
564 i++;
565 for (j = 0; j < 3 && aName[i]; j++, i++)
566 {
567 DirContext.DirEntry.Fat.Ext[j] = aName[i];
568 }
569 }
570 if (DirContext.DirEntry.Fat.Filename[0] == 0xe5)
571 {
572 DirContext.DirEntry.Fat.Filename[0] = 0x05;
573 }
574
575 if (needLong)
576 {
577 RtlCopyMemory(LongNameBuffer, DirContext.LongNameU.Buffer, DirContext.LongNameU.Length);
578 DirContext.LongNameU.Buffer = LongNameBuffer;
579 DirContext.LongNameU.MaximumLength = sizeof(LongNameBuffer);
580 DirContext.LongNameU.Buffer[DirContext.LongNameU.Length / sizeof(WCHAR)] = 0;
581 memset(DirContext.LongNameU.Buffer + DirContext.LongNameU.Length / sizeof(WCHAR) + 1, 0xff,
582 DirContext.LongNameU.MaximumLength - DirContext.LongNameU.Length - sizeof(WCHAR));
583 }
584 else
585 {
586 nbSlots = 1;
587 if (BaseAllLower && !BaseAllUpper)
588 {
589 DirContext.DirEntry.Fat.lCase |= VFAT_CASE_LOWER_BASE;
590 }
591 if (ExtensionAllLower && !ExtensionAllUpper)
592 {
593 DirContext.DirEntry.Fat.lCase |= VFAT_CASE_LOWER_EXT;
594 }
595 }
596
597 DPRINT ("dos name=%11.11s\n", DirContext.DirEntry.Fat.Filename);
598
599 /* set attributes */
600 DirContext.DirEntry.Fat.Attrib = ReqAttr;
601 if (IsDirectory)
602 {
603 DirContext.DirEntry.Fat.Attrib |= FILE_ATTRIBUTE_DIRECTORY;
604 }
605 /* set dates and times */
606 KeQuerySystemTime(&SystemTime);
607 FsdSystemTimeToDosDateTime(DeviceExt, &SystemTime, &DirContext.DirEntry.Fat.CreationDate,
608 &DirContext.DirEntry.Fat.CreationTime);
609 DirContext.DirEntry.Fat.UpdateDate = DirContext.DirEntry.Fat.CreationDate;
610 DirContext.DirEntry.Fat.UpdateTime = DirContext.DirEntry.Fat.CreationTime;
611 DirContext.DirEntry.Fat.AccessDate = DirContext.DirEntry.Fat.CreationDate;
612 /* If it's moving, preserve creation time and file size */
613 if (MoveContext != NULL)
614 {
615 DirContext.DirEntry.Fat.CreationDate = MoveContext->CreationDate;
616 DirContext.DirEntry.Fat.CreationTime = MoveContext->CreationTime;
617 DirContext.DirEntry.Fat.FileSize = MoveContext->FileSize;
618 }
619
620 if (needLong)
621 {
622 /* calculate checksum for 8.3 name */
623 for (pSlots[0].alias_checksum = 0, i = 0; i < 11; i++)
624 {
625 pSlots[0].alias_checksum = (((pSlots[0].alias_checksum & 1) << 7
626 | ((pSlots[0].alias_checksum & 0xfe) >> 1))
627 + DirContext.DirEntry.Fat.ShortName[i]);
628 }
629 /* construct slots and entry */
630 for (i = nbSlots - 2; i >= 0; i--)
631 {
632 DPRINT("construct slot %d\n", i);
633 pSlots[i].attr = 0xf;
634 if (i)
635 {
636 pSlots[i].id = (unsigned char)(nbSlots - i - 1);
637 }
638 else
639 {
640 pSlots[i].id = (unsigned char)(nbSlots - i - 1 + 0x40);
641 }
642 pSlots[i].alias_checksum = pSlots[0].alias_checksum;
643 RtlCopyMemory(pSlots[i].name0_4, DirContext.LongNameU.Buffer + (nbSlots - i - 2) * 13, 10);
644 RtlCopyMemory(pSlots[i].name5_10, DirContext.LongNameU.Buffer + (nbSlots - i - 2) * 13 + 5, 12);
645 RtlCopyMemory(pSlots[i].name11_12, DirContext.LongNameU.Buffer + (nbSlots - i - 2) * 13 + 11, 4);
646 }
647 }
648 /* try to find nbSlots contiguous entries frees in directory */
649 if (!vfatFindDirSpace(DeviceExt, ParentFcb, nbSlots, &DirContext.StartIndex))
650 {
651 ExFreePoolWithTag(Buffer, TAG_DIRENT);
652 return STATUS_DISK_FULL;
653 }
654 DirContext.DirIndex = DirContext.StartIndex + nbSlots - 1;
655 if (IsDirectory)
656 {
657 /* If we aren't moving, use next */
658 if (MoveContext == NULL)
659 {
660 CurrentCluster = 0;
661 Status = NextCluster(DeviceExt, 0, &CurrentCluster, TRUE);
662 if (CurrentCluster == 0xffffffff || !NT_SUCCESS(Status))
663 {
664 ExFreePoolWithTag(Buffer, TAG_DIRENT);
665 if (!NT_SUCCESS(Status))
666 {
667 return Status;
668 }
669 return STATUS_DISK_FULL;
670 }
671
672 if (DeviceExt->FatInfo.FatType == FAT32)
673 {
674 FAT32UpdateFreeClustersCount(DeviceExt);
675 }
676 }
677 else
678 {
679 CurrentCluster = MoveContext->FirstCluster;
680 }
681
682 if (DeviceExt->FatInfo.FatType == FAT32)
683 {
684 DirContext.DirEntry.Fat.FirstClusterHigh = (unsigned short)(CurrentCluster >> 16);
685 }
686 DirContext.DirEntry.Fat.FirstCluster = (unsigned short)CurrentCluster;
687 }
688 else if (MoveContext != NULL)
689 {
690 CurrentCluster = MoveContext->FirstCluster;
691
692 if (DeviceExt->FatInfo.FatType == FAT32)
693 {
694 DirContext.DirEntry.Fat.FirstClusterHigh = (unsigned short)(CurrentCluster >> 16);
695 }
696 DirContext.DirEntry.Fat.FirstCluster = (unsigned short)CurrentCluster;
697 }
698
699 /* No need to init cache here, vfatFindDirSpace() will have done it for us */
700 ASSERT(BooleanFlagOn(ParentFcb->Flags, FCB_CACHE_INITIALIZED));
701
702 i = DeviceExt->FatInfo.BytesPerCluster / sizeof(FAT_DIR_ENTRY);
703 FileOffset.u.HighPart = 0;
704 FileOffset.u.LowPart = DirContext.StartIndex * sizeof(FAT_DIR_ENTRY);
705 if (DirContext.StartIndex / i == DirContext.DirIndex / i)
706 {
707 /* one cluster */
708 _SEH2_TRY
709 {
710 CcPinRead(ParentFcb->FileObject, &FileOffset, nbSlots * sizeof(FAT_DIR_ENTRY), PIN_WAIT, &Context, (PVOID*)&pFatEntry);
711 }
712 _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
713 {
714 ExFreePoolWithTag(Buffer, TAG_DIRENT);
715 _SEH2_YIELD(return _SEH2_GetExceptionCode());
716 }
717 _SEH2_END;
718
719 if (nbSlots > 1)
720 {
721 RtlCopyMemory(pFatEntry, Buffer, (nbSlots - 1) * sizeof(FAT_DIR_ENTRY));
722 }
723 RtlCopyMemory(pFatEntry + (nbSlots - 1), &DirContext.DirEntry.Fat, sizeof(FAT_DIR_ENTRY));
724 }
725 else
726 {
727 /* two clusters */
728 size = DeviceExt->FatInfo.BytesPerCluster -
729 (DirContext.StartIndex * sizeof(FAT_DIR_ENTRY)) % DeviceExt->FatInfo.BytesPerCluster;
730 i = size / sizeof(FAT_DIR_ENTRY);
731 _SEH2_TRY
732 {
733 CcPinRead(ParentFcb->FileObject, &FileOffset, size, PIN_WAIT, &Context, (PVOID*)&pFatEntry);
734 }
735 _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
736 {
737 ExFreePoolWithTag(Buffer, TAG_DIRENT);
738 _SEH2_YIELD(return _SEH2_GetExceptionCode());
739 }
740 _SEH2_END;
741 RtlCopyMemory(pFatEntry, Buffer, size);
742 CcSetDirtyPinnedData(Context, NULL);
743 CcUnpinData(Context);
744 FileOffset.u.LowPart += size;
745 _SEH2_TRY
746 {
747 CcPinRead(ParentFcb->FileObject, &FileOffset, nbSlots * sizeof(FAT_DIR_ENTRY) - size, PIN_WAIT, &Context, (PVOID*)&pFatEntry);
748 }
749 _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
750 {
751 ExFreePoolWithTag(Buffer, TAG_DIRENT);
752 _SEH2_YIELD(return _SEH2_GetExceptionCode());
753 }
754 _SEH2_END;
755 if (nbSlots - 1 > i)
756 {
757 RtlCopyMemory(pFatEntry, (PVOID)(Buffer + size), (nbSlots - 1 - i) * sizeof(FAT_DIR_ENTRY));
758 }
759 RtlCopyMemory(pFatEntry + nbSlots - 1 - i, &DirContext.DirEntry.Fat, sizeof(FAT_DIR_ENTRY));
760 }
761 CcSetDirtyPinnedData(Context, NULL);
762 CcUnpinData(Context);
763
764 if (MoveContext != NULL)
765 {
766 /* We're modifying an existing FCB - likely rename/move */
767 Status = vfatUpdateFCB(DeviceExt, *Fcb, &DirContext, ParentFcb);
768 }
769 else
770 {
771 Status = vfatMakeFCBFromDirEntry(DeviceExt, ParentFcb, &DirContext, Fcb);
772 }
773 if (!NT_SUCCESS(Status))
774 {
775 ExFreePoolWithTag(Buffer, TAG_DIRENT);
776 return Status;
777 }
778
779 DPRINT("new : entry=%11.11s\n", (*Fcb)->entry.Fat.Filename);
780 DPRINT("new : entry=%11.11s\n", DirContext.DirEntry.Fat.Filename);
781
782 if (IsDirectory)
783 {
784 Status = vfatFCBInitializeCacheFromVolume(DeviceExt, (*Fcb));
785 if (!NT_SUCCESS(Status))
786 {
787 ExFreePoolWithTag(Buffer, TAG_DIRENT);
788 return Status;
789 }
790
791 FileOffset.QuadPart = 0;
792 _SEH2_TRY
793 {
794 CcPinRead((*Fcb)->FileObject, &FileOffset, DeviceExt->FatInfo.BytesPerCluster, PIN_WAIT, &Context, (PVOID*)&pFatEntry);
795 }
796 _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
797 {
798 ExFreePoolWithTag(Buffer, TAG_DIRENT);
799 _SEH2_YIELD(return _SEH2_GetExceptionCode());
800 }
801 _SEH2_END;
802 /* clear the new directory cluster if not moving */
803 if (MoveContext == NULL)
804 {
805 RtlZeroMemory(pFatEntry, DeviceExt->FatInfo.BytesPerCluster);
806 /* create '.' and '..' */
807 pFatEntry[0] = DirContext.DirEntry.Fat;
808 RtlCopyMemory(pFatEntry[0].ShortName, ". ", 11);
809 pFatEntry[1] = DirContext.DirEntry.Fat;
810 RtlCopyMemory(pFatEntry[1].ShortName, ".. ", 11);
811 }
812
813 pFatEntry[1].FirstCluster = ParentFcb->entry.Fat.FirstCluster;
814 pFatEntry[1].FirstClusterHigh = ParentFcb->entry.Fat.FirstClusterHigh;
815 if (vfatFCBIsRoot(ParentFcb))
816 {
817 pFatEntry[1].FirstCluster = 0;
818 pFatEntry[1].FirstClusterHigh = 0;
819 }
820 CcSetDirtyPinnedData(Context, NULL);
821 CcUnpinData(Context);
822 }
823 ExFreePoolWithTag(Buffer, TAG_DIRENT);
824 DPRINT("addentry ok\n");
825 return STATUS_SUCCESS;
826}
BOOLEAN
unsigned char BOOLEAN
Definition: ProcessorBind.h:185
RtlGenerate8dot3Name
NTSYSAPI VOID NTAPI RtlGenerate8dot3Name(_In_ PCUNICODE_STRING Name, _In_ BOOLEAN AllowExtendedCharacters, _Inout_ PGENERATE_NAME_CONTEXT Context, _Inout_ PUNICODE_STRING Name8dot3)
strncmp
int strncmp(const char *String1, const char *String2, ACPI_SIZE Count)
Definition: utclib.c:534
NTSTATUS
LONG NTSTATUS
Definition: precomp.h:26
FILE_DIRECTORY_FILE
#define FILE_DIRECTORY_FILE
Definition: constants.h:491
FAT32
#define FAT32
Definition: fat.h:169
CcSetDirtyPinnedData
VOID NTAPI CcSetDirtyPinnedData(IN PVOID BcbVoid, IN OPTIONAL PLARGE_INTEGER Lsn)
Definition: cachesub.c:121
FileOffset
_In_ PFCB _In_ LONGLONG FileOffset
Definition: cdprocs.h:160
ParentFcb
_In_ PFCB ParentFcb
Definition: cdprocs.h:736
Fcb
_In_ PFCB Fcb
Definition: cdprocs.h:159
DirContext
_In_ PFCB _In_ PDIRENT_ENUM_CONTEXT DirContext
Definition: cdprocs.h:425
Buffer
Definition: bufpool.h:45
vfatFindDirSpace
BOOLEAN vfatFindDirSpace(IN PDEVICE_EXTENSION DeviceExt, IN PVFATFCB pDirFcb, IN ULONG nbSlots, OUT PULONG start)
Definition: dirwr.c:258
vfatFCBInitializeCacheFromVolume
NTSTATUS vfatFCBInitializeCacheFromVolume(PVCB vcb, PVFATFCB fcb)
Definition: dirwr.c:22
NULL
#define NULL
Definition: types.h:112
TRUE
#define TRUE
Definition: types.h:120
FALSE
#define FALSE
Definition: types.h:117
NT_SUCCESS
#define NT_SUCCESS(StatCode)
Definition: apphelp.c:32
FindFile
@ FindFile
Definition: find.c:28
char
unsigned char
Definition: typeof.h:29
short
unsigned short(__cdecl typeof(TIFFCurrentDirectory))(struct tiff *)
Definition: typeof.h:94
TAG_DIRENT
#define TAG_DIRENT
Definition: nodetype.h:158
FCB_CACHE_INITIALIZED
#define FCB_CACHE_INITIALIZED
Definition: ntfs.h:508
FsdSystemTimeToDosDateTime
BOOLEAN FsdSystemTimeToDosDateTime(PDEVICE_EXTENSION DeviceExt, PLARGE_INTEGER SystemTime, PUSHORT pDosDate, PUSHORT pDosTime)
Definition: dir.c:52
FAT32UpdateFreeClustersCount
NTSTATUS FAT32UpdateFreeClustersCount(PDEVICE_EXTENSION DeviceExt)
Definition: fat.c:1215
NextCluster
NTSTATUS NextCluster(PDEVICE_EXTENSION DeviceExt, ULONG FirstCluster, PULONG CurrentCluster, BOOLEAN Extend)
Definition: rw.c:38
ExAllocatePoolWithTag
#define ExAllocatePoolWithTag(hernya, size, tag)
Definition: env_spec_w32.h:350
RtlUpcaseUnicodeString
NTSTATUS RtlUpcaseUnicodeString(PUNICODE_STRING dst, PUNICODE_STRING src, BOOLEAN Alloc)
Definition: string_lib.cpp:46
KeQuerySystemTime
#define KeQuerySystemTime(t)
Definition: env_spec_w32.h:570
NonPagedPool
#define NonPagedPool
Definition: env_spec_w32.h:307
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#define IsDirectory(Fcb)
Definition: ext2fs.h:283
BooleanFlagOn
#define BooleanFlagOn(F, SF)
Definition: ext2fs.h:183
ShortName
IN PDCB IN POEM_STRING IN PUNICODE_STRING IN OUT POEM_STRING ShortName
Definition: fatprocs.h:1306
_SEH2_END
#define _SEH2_END
Definition: filesup.c:22
_SEH2_TRY
#define _SEH2_TRY
Definition: filesup.c:19
Status
Status
Definition: gdiplustypes.h:25
size
GLsizeiptr size
Definition: glext.h:5919
c
const GLubyte * c
Definition: glext.h:8905
i
GLsizei GLenum const GLvoid GLsizei GLenum GLbyte GLbyte GLbyte GLdouble GLdouble GLdouble GLfloat GLfloat GLfloat GLint GLint GLint GLshort GLshort GLshort GLubyte GLubyte GLubyte GLuint GLuint GLuint GLushort GLushort GLushort GLbyte GLbyte GLbyte GLbyte GLdouble GLdouble GLdouble GLdouble GLfloat GLfloat GLfloat GLfloat GLint GLint GLint GLint GLshort GLshort GLshort GLshort GLubyte GLubyte GLubyte GLubyte GLuint GLuint GLuint GLuint GLushort GLushort GLushort GLushort GLboolean const GLdouble const GLfloat const GLint const GLshort const GLbyte const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLdouble const GLfloat const GLfloat const GLint const GLint const GLshort const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort GLenum GLenum GLenum GLfloat GLenum GLint GLenum GLenum GLenum GLfloat GLenum GLenum GLint GLenum GLfloat GLenum GLint GLint GLushort GLenum GLenum GLfloat GLenum GLenum GLint GLfloat const GLubyte GLenum GLenum GLenum const GLfloat GLenum GLenum const GLint GLenum GLint GLint GLsizei GLsizei GLint GLenum GLenum const GLvoid GLenum GLenum const GLfloat GLenum GLenum const GLint GLenum GLenum const GLdouble GLenum GLenum const GLfloat GLenum GLenum const GLint GLsizei GLuint GLfloat GLuint GLbitfield GLfloat GLint GLuint GLboolean GLenum GLfloat GLenum GLbitfield GLenum GLfloat GLfloat GLint GLint const GLfloat GLenum GLfloat GLfloat GLint GLint GLfloat GLfloat GLint GLint const GLfloat GLint GLfloat GLfloat GLint GLfloat GLfloat GLint GLfloat GLfloat const GLdouble const GLfloat const GLdouble const GLfloat GLint i
Definition: glfuncs.h:248
j
GLsizei GLenum const GLvoid GLsizei GLenum GLbyte GLbyte GLbyte GLdouble GLdouble GLdouble GLfloat GLfloat GLfloat GLint GLint GLint GLshort GLshort GLshort GLubyte GLubyte GLubyte GLuint GLuint GLuint GLushort GLushort GLushort GLbyte GLbyte GLbyte GLbyte GLdouble GLdouble GLdouble GLdouble GLfloat GLfloat GLfloat GLfloat GLint GLint GLint GLint GLshort GLshort GLshort GLshort GLubyte GLubyte GLubyte GLubyte GLuint GLuint GLuint GLuint GLushort GLushort GLushort GLushort GLboolean const GLdouble const GLfloat const GLint const GLshort const GLbyte const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLdouble const GLfloat const GLfloat const GLint const GLint const GLshort const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort GLenum GLenum GLenum GLfloat GLenum GLint GLenum GLenum GLenum GLfloat GLenum GLenum GLint GLenum GLfloat GLenum GLint GLint GLushort GLenum GLenum GLfloat GLenum GLenum GLint GLfloat const GLubyte GLenum GLenum GLenum const GLfloat GLenum GLenum const GLint GLenum GLint GLint GLsizei GLsizei GLint GLenum GLenum const GLvoid GLenum GLenum const GLfloat GLenum GLenum const GLint GLenum GLenum const GLdouble GLenum GLenum const GLfloat GLenum GLenum const GLint GLsizei GLuint GLfloat GLuint GLbitfield GLfloat GLint GLuint GLboolean GLenum GLfloat GLenum GLbitfield GLenum GLfloat GLfloat GLint GLint const GLfloat GLenum GLfloat GLfloat GLint GLint GLfloat GLfloat GLint GLint const GLfloat GLint GLfloat GLfloat GLint GLfloat GLfloat GLint GLfloat GLfloat const GLdouble const GLfloat const GLdouble const GLfloat GLint GLint GLint j
Definition: glfuncs.h:250
EXCEPTION_EXECUTE_HANDLER
#define EXCEPTION_EXECUTE_HANDLER
Definition: excpt.h:85
RtlIsNameLegalDOS8Dot3
BOOLEAN NTAPI RtlIsNameLegalDOS8Dot3(_In_ PUNICODE_STRING Name, _Inout_opt_ POEM_STRING OemName, _Inout_opt_ PBOOLEAN NameContainsSpaces)
c
#define c
Definition: ke_i.h:80
ASSERT
#define ASSERT(a)
Definition: mode.c:44
ExFreePoolWithTag
#define ExFreePoolWithTag(_P, _T)
Definition: module.h:1109
FILE_ATTRIBUTE_DIRECTORY
#define FILE_ATTRIBUTE_DIRECTORY
Definition: nt_native.h:705
PIN_WAIT
#define PIN_WAIT
Definition: ntifs.template.h:1248
L
#define L(x)
Definition: ntvdm.h:50
USHORT
unsigned short USHORT
Definition: pedump.c:61
CcUnpinData
VOID NTAPI CcUnpinData(IN PVOID Bcb)
Definition: pinsup.c:955
CcPinRead
BOOLEAN NTAPI CcPinRead(IN PFILE_OBJECT FileObject, IN PLARGE_INTEGER FileOffset, IN ULONG Length, IN ULONG Flags, OUT PVOID *Bcb, OUT PVOID *Buffer)
Definition: pinsup.c:802
_SEH2_GetExceptionCode
#define _SEH2_GetExceptionCode()
Definition: pseh2_64.h:159
_SEH2_EXCEPT
#define _SEH2_EXCEPT(...)
Definition: pseh2_64.h:34
_SEH2_YIELD
#define _SEH2_YIELD(__stmt)
Definition: pseh2_64.h:162
memset
#define memset(x, y, z)
Definition: compat.h:39
STATUS_SUCCESS
#define STATUS_SUCCESS
Definition: shellext.h:65
DPRINT
#define DPRINT
Definition: sndvol32.h:71
_FATDirEntry
Definition: vfat.h:111
_FATDirEntry::ShortName
unsigned char ShortName[11]
Definition: vfat.h:115
_FATDirEntry::FileSize
unsigned long FileSize
Definition: vfat.h:129
_FATDirEntry::FirstCluster
unsigned short FirstCluster
Definition: vfat.h:128
_FATDirEntry::FirstClusterHigh
unsigned short FirstClusterHigh
Definition: vfat.h:123
_FCB::CreationTime
LONGLONG CreationTime
Definition: cdstruc.h:1030
_FCB::Flags
ULONG Flags
Definition: ntfs.h:536
_FCB::DirIndex
ULONG DirIndex
Definition: ntfs.h:533
_FCB::ShortName
FILE_NAME_NODE ShortName
Definition: fatstruc.h:1115
_FCB::FileObject
PFILE_OBJECT FileObject
Definition: ntfs.h:520
_GENERATE_NAME_CONTEXT
Definition: rtltypes.h:603
_UNICODE_STRING::MaximumLength
USHORT MaximumLength
Definition: env_spec_w32.h:370
_UNICODE_STRING::Buffer
PWSTR Buffer
Definition: env_spec_w32.h:371
_VFAT_DIRENTRY_CONTEXT
Definition: vfat.h:598
_VFAT_DIRENTRY_CONTEXT::ShortNameU
UNICODE_STRING ShortNameU
Definition: vfat.h:603
_VFAT_DIRENTRY_CONTEXT::LongNameU
UNICODE_STRING LongNameU
Definition: vfat.h:602
_VFAT_DIRENTRY_CONTEXT::DirEntry
DIR_ENTRY DirEntry
Definition: vfat.h:601
_VFAT_DIRENTRY_CONTEXT::DeviceExt
PDEVICE_EXTENSION DeviceExt
Definition: vfat.h:604
_VFAT_DIRENTRY_CONTEXT::DirIndex
ULONG DirIndex
Definition: vfat.h:600
_slot
Definition: vfat.h:185
_slot::id
unsigned char id
Definition: vfat.h:186
_slot::alias_checksum
unsigned char alias_checksum
Definition: vfat.h:190
_slot::attr
unsigned char attr
Definition: vfat.h:188
RtlCopyMemory
#define RtlCopyMemory(Destination, Source, Length)
Definition: typedefs.h:263
RtlZeroMemory
#define RtlZeroMemory(Destination, Length)
Definition: typedefs.h:262
PUCHAR
unsigned char * PUCHAR
Definition: typedefs.h:53
ULONG
uint32_t ULONG
Definition: typedefs.h:59
STATUS_UNSUCCESSFUL
#define STATUS_UNSUCCESSFUL
Definition: udferr_usr.h:132
STATUS_DISK_FULL
#define STATUS_DISK_FULL
Definition: udferr_usr.h:155
STATUS_INSUFFICIENT_RESOURCES
#define STATUS_INSUFFICIENT_RESOURCES
Definition: udferr_usr.h:158
OEM_STRING
STRING OEM_STRING
Definition: umtypes.h:203
_DIR_ENTRY::Fat
FAT_DIR_ENTRY Fat
Definition: vfat.h:226
_LARGE_INTEGER
Definition: typedefs.h:103
FAT_DIR_ENTRY
struct _FATDirEntry FAT_DIR_ENTRY
Definition: vfat.h:167
VFAT_CASE_LOWER_EXT
#define VFAT_CASE_LOWER_EXT
Definition: vfat.h:201
LONGNAME_MAX_LENGTH
#define LONGNAME_MAX_LENGTH
Definition: vfat.h:203
VFAT_CASE_LOWER_BASE
#define VFAT_CASE_LOWER_BASE
Definition: vfat.h:200
vfatUpdateFCB
NTSTATUS vfatUpdateFCB(PDEVICE_EXTENSION pVCB, PVFATFCB Fcb, PVFAT_DIRENTRY_CONTEXT DirContext, PVFATFCB ParentFcb)
Definition: fcb.c:539
vfatFCBIsRoot
BOOLEAN vfatFCBIsRoot(PVFATFCB FCB)
Definition: fcb.c:293
vfatMakeFCBFromDirEntry
NTSTATUS vfatMakeFCBFromDirEntry(PVCB vcb, PVFATFCB directoryFCB, PVFAT_DIRENTRY_CONTEXT DirContext, PVFATFCB *fileFCB)
Definition: fcb.c:725
WCHAR
__wchar_t WCHAR
Definition: xmlstorage.h:180
CHAR
char CHAR
Definition: xmlstorage.h:175

◆ FATDelEntry()

static NTSTATUS FATDelEntry ( IN PDEVICE_EXTENSION  DeviceExt,
IN PVFATFCB  pFcb,
OUT PVFAT_MOVE_CONTEXT  MoveContext 
)
static

Definition at line 956 of file dirwr.c.

960{
961 ULONG CurrentCluster = 0, NextCluster, i;
962 PVOID Context = NULL;
963 LARGE_INTEGER Offset;
964 PFAT_DIR_ENTRY pDirEntry = NULL;
965 NTSTATUS Status;
966
967 ASSERT(pFcb);
968 ASSERT(pFcb->parentFcb);
969
970 Status = vfatFCBInitializeCacheFromVolume(DeviceExt, pFcb->parentFcb);
971 if (!NT_SUCCESS(Status))
972 {
973 return Status;
974 }
975
976 DPRINT("delEntry PathName \'%wZ\'\n", &pFcb->PathNameU);
977 DPRINT("delete entry: %u to %u\n", pFcb->startIndex, pFcb->dirIndex);
978 Offset.u.HighPart = 0;
979 for (i = pFcb->startIndex; i <= pFcb->dirIndex; i++)
980 {
981 if (Context == NULL || ((i * sizeof(FAT_DIR_ENTRY)) % PAGE_SIZE) == 0)
982 {
983 if (Context)
984 {
985 CcSetDirtyPinnedData(Context, NULL);
986 CcUnpinData(Context);
987 }
988 Offset.u.LowPart = (i * sizeof(FAT_DIR_ENTRY) / PAGE_SIZE) * PAGE_SIZE;
989 _SEH2_TRY
990 {
991 CcPinRead(pFcb->parentFcb->FileObject, &Offset, PAGE_SIZE, PIN_WAIT, &Context, (PVOID*)&pDirEntry);
992 }
993 _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
994 {
995 _SEH2_YIELD(return _SEH2_GetExceptionCode());
996 }
997 _SEH2_END;
998 }
999 pDirEntry[i % (PAGE_SIZE / sizeof(FAT_DIR_ENTRY))].Filename[0] = 0xe5;
1000 if (i == pFcb->dirIndex)
1001 {
1002 CurrentCluster =
1003 vfatDirEntryGetFirstCluster(DeviceExt,
1004 (PDIR_ENTRY)&pDirEntry[i % (PAGE_SIZE / sizeof(FAT_DIR_ENTRY))]);
1005 }
1006 }
1007
1008 /* In case of moving, save properties */
1009 if (MoveContext != NULL)
1010 {
1011 pDirEntry = &pDirEntry[pFcb->dirIndex % (PAGE_SIZE / sizeof(FAT_DIR_ENTRY))];
1012 MoveContext->FirstCluster = CurrentCluster;
1013 MoveContext->FileSize = pDirEntry->FileSize;
1014 MoveContext->CreationTime = pDirEntry->CreationTime;
1015 MoveContext->CreationDate = pDirEntry->CreationDate;
1016 }
1017
1018 if (Context)
1019 {
1020 CcSetDirtyPinnedData(Context, NULL);
1021 CcUnpinData(Context);
1022 }
1023
1024 /* In case of moving, don't delete data */
1025 if (MoveContext == NULL)
1026 {
1027 while (CurrentCluster && CurrentCluster != 0xffffffff)
1028 {
1029 GetNextCluster(DeviceExt, CurrentCluster, &NextCluster);
1030 /* FIXME: check status */
1031 WriteCluster(DeviceExt, CurrentCluster, 0);
1032 CurrentCluster = NextCluster;
1033 }
1034
1035 if (DeviceExt->FatInfo.FatType == FAT32)
1036 {
1037 FAT32UpdateFreeClustersCount(DeviceExt);
1038 }
1039 }
1040
1041 return STATUS_SUCCESS;
1042}
vfatDirEntryGetFirstCluster
ULONG vfatDirEntryGetFirstCluster(PDEVICE_EXTENSION pDeviceExt, PDIR_ENTRY pFatDirEntry)
Definition: direntry.c:18
GetNextCluster
NTSTATUS GetNextCluster(PDEVICE_EXTENSION DeviceExt, ULONG CurrentCluster, PULONG NextCluster)
Definition: fat.c:744
WriteCluster
NTSTATUS WriteCluster(PDEVICE_EXTENSION DeviceExt, ULONG ClusterToWrite, ULONG NewValue)
Definition: fat.c:705
PAGE_SIZE
#define PAGE_SIZE
Definition: env_spec_w32.h:49
Offset
_In_ ULONG _In_ ULONG Offset
Definition: ntddpcm.h:101
_FATDirEntry::Filename
unsigned char Filename[8]
Definition: vfat.h:114
_FATDirEntry::CreationDate
unsigned short CreationDate
Definition: vfat.h:120
_FATDirEntry::CreationTime
unsigned short CreationTime
Definition: vfat.h:120
_DIR_ENTRY
Definition: vfat.h:225

◆ FATGetNextDirEntry()

NTSTATUS FATGetNextDirEntry ( PVOID *  pContext,
PVOID *  pPage,
PVFATFCB  pDirFcb,
PVFAT_DIRENTRY_CONTEXT  DirContext,
BOOLEAN  First 
)

◆ FATIsDirectoryEmpty()

BOOLEAN FATIsDirectoryEmpty ( PDEVICE_EXTENSION  DeviceExt,
PVFATFCB  Fcb 
)

Definition at line 42 of file direntry.c.

45{
46 LARGE_INTEGER FileOffset;
47 PVOID Context = NULL;
48 PFAT_DIR_ENTRY FatDirEntry;
49 ULONG Index, MaxIndex;
50 NTSTATUS Status;
51
52 if (vfatFCBIsRoot(Fcb))
53 {
54 Index = 0;
55 }
56 else
57 {
58 Index = 2;
59 }
60
61 FileOffset.QuadPart = 0;
62 MaxIndex = Fcb->RFCB.FileSize.u.LowPart / sizeof(FAT_DIR_ENTRY);
63
64 Status = vfatFCBInitializeCacheFromVolume(DeviceExt, Fcb);
65 if (!NT_SUCCESS(Status))
66 {
67 return FALSE;
68 }
69
70 while (Index < MaxIndex)
71 {
72 if (Context == NULL || (Index % FAT_ENTRIES_PER_PAGE) == 0)
73 {
74 if (Context != NULL)
75 {
76 CcUnpinData(Context);
77 }
78
79 _SEH2_TRY
80 {
81 CcMapData(Fcb->FileObject, &FileOffset, sizeof(FAT_DIR_ENTRY), MAP_WAIT, &Context, (PVOID*)&FatDirEntry);
82 }
83 _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
84 {
85 _SEH2_YIELD(return TRUE);
86 }
87 _SEH2_END;
88
89 FatDirEntry += Index % FAT_ENTRIES_PER_PAGE;
90 FileOffset.QuadPart += PAGE_SIZE;
91 }
92
93 if (FAT_ENTRY_END(FatDirEntry))
94 {
95 CcUnpinData(Context);
96 return TRUE;
97 }
98
99 if (!FAT_ENTRY_DELETED(FatDirEntry))
100 {
101 CcUnpinData(Context);
102 return FALSE;
103 }
104
105 Index++;
106 FatDirEntry++;
107 }
108
109 if (Context)
110 {
111 CcUnpinData(Context);
112 }
113
114 return TRUE;
115}
MAP_WAIT
#define MAP_WAIT
Definition: ntifs.template.h:1255
CcMapData
BOOLEAN NTAPI CcMapData(IN PFILE_OBJECT FileObject, IN PLARGE_INTEGER FileOffset, IN ULONG Length, IN ULONG Flags, OUT PVOID *BcbResult, OUT PVOID *Buffer)
Definition: pinsup.c:694
_FCB::RFCB
FSRTL_COMMON_FCB_HEADER RFCB
Definition: ntfs.h:517
_FSRTL_COMMON_FCB_HEADER::FileSize
LARGE_INTEGER FileSize
Definition: env_spec_w32.h:756
_LARGE_INTEGER::u
struct _LARGE_INTEGER::@2282 u
FAT_ENTRY_DELETED
#define FAT_ENTRY_DELETED(DirEntry)
Definition: vfat.h:209
FAT_ENTRY_END
#define FAT_ENTRY_END(DirEntry)
Definition: vfat.h:210
FAT_ENTRIES_PER_PAGE
#define FAT_ENTRIES_PER_PAGE
Definition: vfat.h:219
Index
_In_ WDFCOLLECTION _In_ ULONG Index
Definition: wdfcollection.h:182

◆ FATXAddEntry()

static NTSTATUS FATXAddEntry ( IN PDEVICE_EXTENSION  DeviceExt,
IN PUNICODE_STRING  NameU,
IN PVFATFCB *  Fcb,
IN PVFATFCB  ParentFcb,
IN ULONG  RequestedOptions,
IN UCHAR  ReqAttr,
IN PVFAT_MOVE_CONTEXT  MoveContext 
)
static

Definition at line 832 of file dirwr.c.

840{
841 PVOID Context = NULL;
842 LARGE_INTEGER SystemTime, FileOffset;
843 OEM_STRING NameA;
844 VFAT_DIRENTRY_CONTEXT DirContext;
845 PFATX_DIR_ENTRY pFatXDirEntry;
846 ULONG Index;
847
848 DPRINT("addEntry: Name='%wZ', Dir='%wZ'\n", NameU, &ParentFcb->PathNameU);
849
850 DirContext.LongNameU = *NameU;
851
852 if (DirContext.LongNameU.Length / sizeof(WCHAR) > 42)
853 {
854 /* name too long */
855 return STATUS_NAME_TOO_LONG;
856 }
857
858 /* try to find 1 entry free in directory */
859 if (!vfatFindDirSpace(DeviceExt, ParentFcb, 1, &DirContext.StartIndex))
860 {
861 return STATUS_DISK_FULL;
862 }
863 Index = DirContext.DirIndex = DirContext.StartIndex;
864 if (!vfatFCBIsRoot(ParentFcb))
865 {
866 DirContext.DirIndex += 2;
867 DirContext.StartIndex += 2;
868 }
869
870 DirContext.ShortNameU.Buffer = 0;
871 DirContext.ShortNameU.Length = 0;
872 DirContext.ShortNameU.MaximumLength = 0;
873 DirContext.DeviceExt = DeviceExt;
874 RtlZeroMemory(&DirContext.DirEntry.FatX, sizeof(FATX_DIR_ENTRY));
875 memset(DirContext.DirEntry.FatX.Filename, 0xff, 42);
876 /* Use cluster, if moving */
877 if (MoveContext != NULL)
878 {
879 DirContext.DirEntry.FatX.FirstCluster = MoveContext->FirstCluster;
880 }
881 else
882 {
883 DirContext.DirEntry.FatX.FirstCluster = 0;
884 }
885 DirContext.DirEntry.FatX.FileSize = 0;
886
887 /* set file name */
888 NameA.Buffer = (PCHAR)DirContext.DirEntry.FatX.Filename;
889 NameA.Length = 0;
890 NameA.MaximumLength = 42;
891 RtlUnicodeStringToOemString(&NameA, &DirContext.LongNameU, FALSE);
892 DirContext.DirEntry.FatX.FilenameLength = (unsigned char)NameA.Length;
893
894 /* set attributes */
895 DirContext.DirEntry.FatX.Attrib = ReqAttr;
896 if (BooleanFlagOn(RequestedOptions, FILE_DIRECTORY_FILE))
897 {
898 DirContext.DirEntry.FatX.Attrib |= FILE_ATTRIBUTE_DIRECTORY;
899 }
900
901 /* set dates and times */
902 KeQuerySystemTime(&SystemTime);
903 FsdSystemTimeToDosDateTime(DeviceExt, &SystemTime, &DirContext.DirEntry.FatX.CreationDate,
904 &DirContext.DirEntry.FatX.CreationTime);
905 DirContext.DirEntry.FatX.UpdateDate = DirContext.DirEntry.FatX.CreationDate;
906 DirContext.DirEntry.FatX.UpdateTime = DirContext.DirEntry.FatX.CreationTime;
907 DirContext.DirEntry.FatX.AccessDate = DirContext.DirEntry.FatX.CreationDate;
908 DirContext.DirEntry.FatX.AccessTime = DirContext.DirEntry.FatX.CreationTime;
909 /* If it's moving, preserve creation time and file size */
910 if (MoveContext != NULL)
911 {
912 DirContext.DirEntry.FatX.CreationDate = MoveContext->CreationDate;
913 DirContext.DirEntry.FatX.CreationTime = MoveContext->CreationTime;
914 DirContext.DirEntry.FatX.FileSize = MoveContext->FileSize;
915 }
916
917 /* No need to init cache here, vfatFindDirSpace() will have done it for us */
918 ASSERT(BooleanFlagOn(ParentFcb->Flags, FCB_CACHE_INITIALIZED));
919
920 /* add entry into parent directory */
921 FileOffset.u.HighPart = 0;
922 FileOffset.u.LowPart = Index * sizeof(FATX_DIR_ENTRY);
923 _SEH2_TRY
924 {
925 CcPinRead(ParentFcb->FileObject, &FileOffset, sizeof(FATX_DIR_ENTRY), PIN_WAIT, &Context, (PVOID*)&pFatXDirEntry);
926 }
927 _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
928 {
929 _SEH2_YIELD(return _SEH2_GetExceptionCode());
930 }
931 _SEH2_END;
932 RtlCopyMemory(pFatXDirEntry, &DirContext.DirEntry.FatX, sizeof(FATX_DIR_ENTRY));
933 CcSetDirtyPinnedData(Context, NULL);
934 CcUnpinData(Context);
935
936 if (MoveContext != NULL)
937 {
938 /* We're modifying an existing FCB - likely rename/move */
939 /* FIXME: check status */
940 vfatUpdateFCB(DeviceExt, *Fcb, &DirContext, ParentFcb);
941 }
942 else
943 {
944 /* FIXME: check status */
945 vfatMakeFCBFromDirEntry(DeviceExt, ParentFcb, &DirContext, Fcb);
946 }
947
948 DPRINT("addentry ok\n");
949 return STATUS_SUCCESS;
950}
if
if(dx< 0)
Definition: linetemp.h:194
PCHAR
#define PCHAR
Definition: match.c:90
RtlUnicodeStringToOemString
NTSYSAPI NTSTATUS NTAPI RtlUnicodeStringToOemString(POEM_STRING DestinationString, PCUNICODE_STRING SourceString, BOOLEAN AllocateDestinationString)
STATUS_NAME_TOO_LONG
#define STATUS_NAME_TOO_LONG
Definition: ntstatus.h:498
_FATXDirEntry
Definition: vfat.h:170
FATX_DIR_ENTRY
struct _FATXDirEntry FATX_DIR_ENTRY
Definition: vfat.h:222

◆ FATXDelEntry()

static NTSTATUS FATXDelEntry ( IN PDEVICE_EXTENSION  DeviceExt,
IN PVFATFCB  pFcb,
OUT PVFAT_MOVE_CONTEXT  MoveContext 
)
static

Definition at line 1048 of file dirwr.c.

1052{
1053 ULONG CurrentCluster = 0, NextCluster;
1054 PVOID Context = NULL;
1055 LARGE_INTEGER Offset;
1056 PFATX_DIR_ENTRY pDirEntry;
1057 ULONG StartIndex;
1058 NTSTATUS Status;
1059
1060 ASSERT(pFcb);
1061 ASSERT(pFcb->parentFcb);
1062 ASSERT(vfatVolumeIsFatX(DeviceExt));
1063
1064 StartIndex = pFcb->startIndex;
1065
1066 Status = vfatFCBInitializeCacheFromVolume(DeviceExt, pFcb->parentFcb);
1067 if (!NT_SUCCESS(Status))
1068 {
1069 return Status;
1070 }
1071
1072 DPRINT("delEntry PathName \'%wZ\'\n", &pFcb->PathNameU);
1073 DPRINT("delete entry: %u\n", StartIndex);
1074 Offset.u.HighPart = 0;
1075 Offset.u.LowPart = (StartIndex * sizeof(FATX_DIR_ENTRY) / PAGE_SIZE) * PAGE_SIZE;
1076 _SEH2_TRY
1077 {
1078 CcPinRead(pFcb->parentFcb->FileObject, &Offset, PAGE_SIZE, PIN_WAIT, &Context, (PVOID*)&pDirEntry);
1079 }
1080 _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
1081 {
1082 DPRINT1("CcPinRead(Offset %x:%x, Length %d) failed\n", Offset.u.HighPart, Offset.u.LowPart, PAGE_SIZE);
1083 _SEH2_YIELD(return _SEH2_GetExceptionCode());
1084 }
1085 _SEH2_END;
1086 pDirEntry = &pDirEntry[StartIndex % (PAGE_SIZE / sizeof(FATX_DIR_ENTRY))];
1087 pDirEntry->FilenameLength = 0xe5;
1088 CurrentCluster = vfatDirEntryGetFirstCluster(DeviceExt,
1089 (PDIR_ENTRY)pDirEntry);
1090
1091 /* In case of moving, save properties */
1092 if (MoveContext != NULL)
1093 {
1094 MoveContext->FirstCluster = CurrentCluster;
1095 MoveContext->FileSize = pDirEntry->FileSize;
1096 MoveContext->CreationTime = pDirEntry->CreationTime;
1097 MoveContext->CreationDate = pDirEntry->CreationDate;
1098 }
1099
1100 CcSetDirtyPinnedData(Context, NULL);
1101 CcUnpinData(Context);
1102
1103 /* In case of moving, don't delete data */
1104 if (MoveContext == NULL)
1105 {
1106 while (CurrentCluster && CurrentCluster != 0xffffffff)
1107 {
1108 GetNextCluster(DeviceExt, CurrentCluster, &NextCluster);
1109 /* FIXME: check status */
1110 WriteCluster(DeviceExt, CurrentCluster, 0);
1111 CurrentCluster = NextCluster;
1112 }
1113 }
1114
1115 return STATUS_SUCCESS;
1116}
DPRINT1
#define DPRINT1
Definition: precomp.h:8
_FATXDirEntry::FileSize
unsigned long FileSize
Definition: vfat.h:175
_FATXDirEntry::CreationDate
unsigned short CreationDate
Definition: vfat.h:179
_FATXDirEntry::FilenameLength
unsigned char FilenameLength
Definition: vfat.h:171
_FATXDirEntry::CreationTime
unsigned short CreationTime
Definition: vfat.h:178
vfatVolumeIsFatX
FORCEINLINE BOOLEAN vfatVolumeIsFatX(PDEVICE_EXTENSION DeviceExt)
Definition: vfat.h:651

◆ FATXGetNextDirEntry()

NTSTATUS FATXGetNextDirEntry ( PVOID *  pContext,
PVOID *  pPage,
PVFATFCB  pDirFcb,
PVFAT_DIRENTRY_CONTEXT  DirContext,
BOOLEAN  First 
)

◆ FATXIsDirectoryEmpty()

BOOLEAN FATXIsDirectoryEmpty ( PDEVICE_EXTENSION  DeviceExt,
PVFATFCB  Fcb 
)

Definition at line 118 of file direntry.c.

121{
122 LARGE_INTEGER FileOffset;
123 PVOID Context = NULL;
124 PFATX_DIR_ENTRY FatXDirEntry;
125 ULONG Index = 0, MaxIndex;
126 NTSTATUS Status;
127
128 FileOffset.QuadPart = 0;
129 MaxIndex = Fcb->RFCB.FileSize.u.LowPart / sizeof(FATX_DIR_ENTRY);
130
131 Status = vfatFCBInitializeCacheFromVolume(DeviceExt, Fcb);
132 if (!NT_SUCCESS(Status))
133 {
134 return FALSE;
135 }
136
137 while (Index < MaxIndex)
138 {
139 if (Context == NULL || (Index % FATX_ENTRIES_PER_PAGE) == 0)
140 {
141 if (Context != NULL)
142 {
143 CcUnpinData(Context);
144 }
145
146 _SEH2_TRY
147 {
148 CcMapData(Fcb->FileObject, &FileOffset, sizeof(FATX_DIR_ENTRY), MAP_WAIT, &Context, (PVOID*)&FatXDirEntry);
149 }
150 _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
151 {
152 _SEH2_YIELD(return TRUE);
153 }
154 _SEH2_END;
155
156 FatXDirEntry += Index % FATX_ENTRIES_PER_PAGE;
157 FileOffset.QuadPart += PAGE_SIZE;
158 }
159
160 if (FATX_ENTRY_END(FatXDirEntry))
161 {
162 CcUnpinData(Context);
163 return TRUE;
164 }
165
166 if (!FATX_ENTRY_DELETED(FatXDirEntry))
167 {
168 CcUnpinData(Context);
169 return FALSE;
170 }
171
172 Index++;
173 FatXDirEntry++;
174 }
175
176 if (Context)
177 {
178 CcUnpinData(Context);
179 }
180
181 return TRUE;
182}
FATX_ENTRY_END
#define FATX_ENTRY_END(DirEntry)
Definition: vfat.h:215
FATX_ENTRIES_PER_PAGE
#define FATX_ENTRIES_PER_PAGE
Definition: vfat.h:220
FATX_ENTRY_DELETED
#define FATX_ENTRY_DELETED(DirEntry)
Definition: vfat.h:214

◆ vfatFCBInitializeCacheFromVolume()

NTSTATUS vfatFCBInitializeCacheFromVolume ( PVCB  vcb,
PVFATFCB  fcb 
)

Definition at line 22 of file dirwr.c.

25{
26 PFILE_OBJECT fileObject;
27 PVFATCCB newCCB;
28 NTSTATUS status;
29 BOOLEAN Acquired;
30
31 /* Don't re-initialize if already done */
32 if (BooleanFlagOn(fcb->Flags, FCB_CACHE_INITIALIZED))
33 {
34 return STATUS_SUCCESS;
35 }
36
37 ASSERT(vfatFCBIsDirectory(fcb));
38 ASSERT(fcb->FileObject == NULL);
39
40 Acquired = FALSE;
41 if (!ExIsResourceAcquiredExclusive(&vcb->DirResource))
42 {
43 ExAcquireResourceExclusiveLite(&vcb->DirResource, TRUE);
44 Acquired = TRUE;
45 }
46
47 fileObject = IoCreateStreamFileObject (NULL, vcb->StorageDevice);
48 if (fileObject == NULL)
49 {
50 status = STATUS_INSUFFICIENT_RESOURCES;
51 goto Quit;
52 }
53
54#ifdef KDBG
55 if (DebugFile.Buffer != NULL && FsRtlIsNameInExpression(&DebugFile, &fcb->LongNameU, FALSE, NULL))
56 {
57 DPRINT1("Attaching %p to %p (%d)\n", fcb, fileObject, fcb->RefCount);
58 }
59#endif
60
61 newCCB = ExAllocateFromNPagedLookasideList(&VfatGlobalData->CcbLookasideList);
62 if (newCCB == NULL)
63 {
64 status = STATUS_INSUFFICIENT_RESOURCES;
65 ObDereferenceObject(fileObject);
66 goto Quit;
67 }
68 RtlZeroMemory(newCCB, sizeof (VFATCCB));
69
70 fileObject->SectionObjectPointer = &fcb->SectionObjectPointers;
71 fileObject->FsContext = fcb;
72 fileObject->FsContext2 = newCCB;
73 fileObject->Vpb = vcb->IoVPB;
74 fcb->FileObject = fileObject;
75
76 _SEH2_TRY
77 {
78 CcInitializeCacheMap(fileObject,
79 (PCC_FILE_SIZES)(&fcb->RFCB.AllocationSize),
80 TRUE,
81 &VfatGlobalData->CacheMgrCallbacks,
82 fcb);
83 }
84 _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
85 {
86 status = _SEH2_GetExceptionCode();
87 fcb->FileObject = NULL;
88 ExFreeToNPagedLookasideList(&VfatGlobalData->CcbLookasideList, newCCB);
89 ObDereferenceObject(fileObject);
90 if (Acquired)
91 {
92 ExReleaseResourceLite(&vcb->DirResource);
93 }
94 return status;
95 }
96 _SEH2_END;
97
98 vfatGrabFCB(vcb, fcb);
99 SetFlag(fcb->Flags, FCB_CACHE_INITIALIZED);
100 status = STATUS_SUCCESS;
101
102Quit:
103 if (Acquired)
104 {
105 ExReleaseResourceLite(&vcb->DirResource);
106 }
107
108 return status;
109}
fcb
struct _fcb fcb
Definition: btrfs_drv.h:1364
ExAcquireResourceExclusiveLite
#define ExAcquireResourceExclusiveLite(res, wait)
Definition: env_spec_w32.h:615
SetFlag
#define SetFlag(_F, _SF)
Definition: ext2fs.h:187
VfatGlobalData
PVFAT_GLOBAL_DATA VfatGlobalData
Definition: iface.c:18
CcInitializeCacheMap
VOID NTAPI CcInitializeCacheMap(IN PFILE_OBJECT FileObject, IN PCC_FILE_SIZES FileSizes, IN BOOLEAN PinAccess, IN PCACHE_MANAGER_CALLBACKS Callbacks, IN PVOID LazyWriteContext)
Definition: fssup.c:195
ExReleaseResourceLite
VOID FASTCALL ExReleaseResourceLite(IN PERESOURCE Resource)
Definition: resource.c:1822
FsRtlIsNameInExpression
BOOLEAN NTAPI FsRtlIsNameInExpression(IN PUNICODE_STRING Expression, IN PUNICODE_STRING Name, IN BOOLEAN IgnoreCase, IN PWCHAR UpcaseTable OPTIONAL)
Definition: name.c:514
IoCreateStreamFileObject
PFILE_OBJECT NTAPI IoCreateStreamFileObject(IN PFILE_OBJECT FileObject, IN PDEVICE_OBJECT DeviceObject)
Definition: file.c:3187
VFAT_GLOBAL_DATA::CcbLookasideList
NPAGED_LOOKASIDE_LIST CcbLookasideList
Definition: vfat.h:418
VFAT_GLOBAL_DATA::CacheMgrCallbacks
CACHE_MANAGER_CALLBACKS CacheMgrCallbacks
Definition: vfat.h:422
_CC_FILE_SIZES
Definition: cctypes.h:14
_VFATCCB
Definition: vfat.h:537
_fcb
Definition: btrfs_drv.h:282
status
Definition: ps.c:97
vfatFCBIsDirectory
FORCEINLINE BOOLEAN vfatFCBIsDirectory(PVFATFCB FCB)
Definition: vfat.h:637
vfatGrabFCB
VOID vfatGrabFCB(PDEVICE_EXTENSION pVCB, PVFATFCB pFCB)
Definition: fcb.c:301
ExIsResourceAcquiredExclusive
#define ExIsResourceAcquiredExclusive
Definition: exfuncs.h:347
PFILE_OBJECT
* PFILE_OBJECT
Definition: iotypes.h:1998
ObDereferenceObject
#define ObDereferenceObject
Definition: obfuncs.h:203

Referenced by FATAddEntry(), FATDelEntry(), FATGetNextDirEntry(), FATIsDirectoryEmpty(), FATXDelEntry(), FATXGetNextDirEntry(), FATXIsDirectoryEmpty(), FsdSetFsLabelInformation(), vfatFindDirSpace(), vfatMakeRootFCB(), vfatRenameEntry(), and VfatUpdateEntry().

◆ vfatFindDirSpace()

BOOLEAN vfatFindDirSpace ( IN PDEVICE_EXTENSION  DeviceExt,
IN PVFATFCB  pDirFcb,
IN ULONG  nbSlots,
OUT PULONG  start 
)

Definition at line 258 of file dirwr.c.

263{
264 LARGE_INTEGER FileOffset;
265 ULONG i, count, size, nbFree = 0;
266 PDIR_ENTRY pFatEntry = NULL;
267 PVOID Context = NULL;
268 NTSTATUS Status;
269 ULONG SizeDirEntry;
270 BOOLEAN IsFatX = vfatVolumeIsFatX(DeviceExt);
271 FileOffset.QuadPart = 0;
272
273 if (IsFatX)
274 SizeDirEntry = sizeof(FATX_DIR_ENTRY);
275 else
276 SizeDirEntry = sizeof(FAT_DIR_ENTRY);
277
278 Status = vfatFCBInitializeCacheFromVolume(DeviceExt, pDirFcb);
279 if (!NT_SUCCESS(Status))
280 {
281 return FALSE;
282 }
283
284 count = pDirFcb->RFCB.FileSize.u.LowPart / SizeDirEntry;
285 size = DeviceExt->FatInfo.BytesPerCluster / SizeDirEntry;
286 for (i = 0; i < count; i++, pFatEntry = (PDIR_ENTRY)((ULONG_PTR)pFatEntry + SizeDirEntry))
287 {
288 if (Context == NULL || (i % size) == 0)
289 {
290 if (Context)
291 {
292 CcUnpinData(Context);
293 }
294 _SEH2_TRY
295 {
296 CcPinRead(pDirFcb->FileObject, &FileOffset, DeviceExt->FatInfo.BytesPerCluster, PIN_WAIT, &Context, (PVOID*)&pFatEntry);
297 }
298 _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
299 {
300 _SEH2_YIELD(return FALSE);
301 }
302 _SEH2_END;
303
304 FileOffset.u.LowPart += DeviceExt->FatInfo.BytesPerCluster;
305 }
306 if (ENTRY_END(IsFatX, pFatEntry))
307 {
308 break;
309 }
310 if (ENTRY_DELETED(IsFatX, pFatEntry))
311 {
312 nbFree++;
313 }
314 else
315 {
316 nbFree = 0;
317 }
318 if (nbFree == nbSlots)
319 {
320 break;
321 }
322 }
323 if (Context)
324 {
325 CcUnpinData(Context);
326 Context = NULL;
327 }
328 if (nbFree == nbSlots)
329 {
330 /* found enough contiguous free slots */
331 *start = i - nbSlots + 1;
332 }
333 else
334 {
335 *start = i - nbFree;
336 if (*start + nbSlots > count)
337 {
338 LARGE_INTEGER AllocationSize;
339 /* extend the directory */
340 if (vfatFCBIsRoot(pDirFcb) && DeviceExt->FatInfo.FatType != FAT32)
341 {
342 /* We can't extend a root directory on a FAT12/FAT16/FATX partition */
343 return FALSE;
344 }
345 AllocationSize.QuadPart = pDirFcb->RFCB.FileSize.u.LowPart + DeviceExt->FatInfo.BytesPerCluster;
346 Status = VfatSetAllocationSizeInformation(pDirFcb->FileObject, pDirFcb,
347 DeviceExt, &AllocationSize);
348 if (!NT_SUCCESS(Status))
349 {
350 return FALSE;
351 }
352 /* clear the new dir cluster */
353 FileOffset.u.LowPart = (ULONG)(pDirFcb->RFCB.FileSize.QuadPart -
354 DeviceExt->FatInfo.BytesPerCluster);
355 _SEH2_TRY
356 {
357 CcPinRead(pDirFcb->FileObject, &FileOffset, DeviceExt->FatInfo.BytesPerCluster, PIN_WAIT, &Context, (PVOID*)&pFatEntry);
358 }
359 _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
360 {
361 _SEH2_YIELD(return FALSE);
362 }
363 _SEH2_END;
364
365 if (IsFatX)
366 memset(pFatEntry, 0xff, DeviceExt->FatInfo.BytesPerCluster);
367 else
368 RtlZeroMemory(pFatEntry, DeviceExt->FatInfo.BytesPerCluster);
369 }
370 else if (*start + nbSlots < count)
371 {
372 /* clear the entry after the last new entry */
373 FileOffset.u.LowPart = (*start + nbSlots) * SizeDirEntry;
374 _SEH2_TRY
375 {
376 CcPinRead(pDirFcb->FileObject, &FileOffset, SizeDirEntry, PIN_WAIT, &Context, (PVOID*)&pFatEntry);
377 }
378 _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
379 {
380 _SEH2_YIELD(return FALSE);
381 }
382 _SEH2_END;
383
384 if (IsFatX)
385 memset(pFatEntry, 0xff, SizeDirEntry);
386 else
387 RtlZeroMemory(pFatEntry, SizeDirEntry);
388 }
389 if (Context)
390 {
391 CcSetDirtyPinnedData(Context, NULL);
392 CcUnpinData(Context);
393 }
394 }
395 DPRINT("nbSlots %u nbFree %u, entry number %u\n", nbSlots, nbFree, *start);
396 return TRUE;
397}
AllocationSize
IN PFCB IN PFILE_OBJECT FileObject IN ULONG AllocationSize
Definition: fatprocs.h:322
start
GLuint start
Definition: gl.h:1545
count
GLuint GLuint GLsizei count
Definition: gl.h:1545
ULONG_PTR
uint32_t ULONG_PTR
Definition: typedefs.h:65
ENTRY_DELETED
#define ENTRY_DELETED(IsFatX, DirEntry)
Definition: vfat.h:205
PDIR_ENTRY
union _DIR_ENTRY * PDIR_ENTRY
Definition: vfat.h:230
ENTRY_END
#define ENTRY_END(IsFatX, DirEntry)
Definition: vfat.h:207
VfatSetAllocationSizeInformation
NTSTATUS VfatSetAllocationSizeInformation(PFILE_OBJECT FileObject, PVFATFCB Fcb, PDEVICE_EXTENSION DeviceExt, PLARGE_INTEGER AllocationSize)
Definition: finfo.c:1211

Referenced by FATAddEntry(), FATXAddEntry(), and FsdSetFsLabelInformation().

◆ VfatMoveEntry()

NTSTATUS VfatMoveEntry ( IN PDEVICE_EXTENSION  DeviceExt,
IN PVFATFCB  pFcb,
IN PUNICODE_STRING  FileName,
IN PVFATFCB  ParentFcb 
)

Definition at line 1122 of file dirwr.c.

1127{
1128 NTSTATUS Status;
1129 PVFATFCB OldParent;
1130 VFAT_MOVE_CONTEXT MoveContext;
1131
1132 DPRINT("VfatMoveEntry(%p, %p, %wZ, %p)\n", DeviceExt, pFcb, FileName, ParentFcb);
1133
1134 /* Delete old entry while keeping data */
1135 Status = VfatDelEntry(DeviceExt, pFcb, &MoveContext);
1136 if (!NT_SUCCESS(Status))
1137 {
1138 return Status;
1139 }
1140
1141 OldParent = pFcb->parentFcb;
1142 CcFlushCache(&OldParent->SectionObjectPointers, NULL, 0, NULL);
1143 MoveContext.InPlace = (OldParent == ParentFcb);
1144
1145 /* Add our new entry with our cluster */
1146 Status = VfatAddEntry(DeviceExt,
1147 FileName,
1148 &pFcb,
1149 ParentFcb,
1150 (vfatFCBIsDirectory(pFcb) ? FILE_DIRECTORY_FILE : 0),
1151 *pFcb->Attributes,
1152 &MoveContext);
1153
1154 CcFlushCache(&pFcb->parentFcb->SectionObjectPointers, NULL, 0, NULL);
1155
1156 return Status;
1157}
CcFlushCache
VOID NTAPI CcFlushCache(IN PSECTION_OBJECT_POINTERS SectionObjectPointer, IN OPTIONAL PLARGE_INTEGER FileOffset, IN ULONG Length, OUT OPTIONAL PIO_STATUS_BLOCK IoStatus)
Definition: cachesub.c:222
_FileName
Definition: filecomp.c:348
_VFATFCB
Definition: vfat.h:448
_VFATFCB::parentFcb
struct _VFATFCB * parentFcb
Definition: vfat.h:490
_VFATFCB::SectionObjectPointers
SECTION_OBJECT_POINTERS SectionObjectPointers
Definition: vfat.h:451
_VFAT_MOVE_CONTEXT
Definition: vfat.h:608
_VFAT_MOVE_CONTEXT::InPlace
BOOLEAN InPlace
Definition: vfat.h:613
VfatAddEntry
FORCEINLINE NTSTATUS VfatAddEntry(PDEVICE_EXTENSION DeviceExt, PUNICODE_STRING NameU, struct _VFATFCB **Fcb, struct _VFATFCB *ParentFcb, ULONG RequestedOptions, UCHAR ReqAttr, struct _VFAT_MOVE_CONTEXT *MoveContext)
Definition: vfat.h:375
VfatDelEntry
FORCEINLINE NTSTATUS VfatDelEntry(PDEVICE_EXTENSION DeviceExt, struct _VFATFCB *Fcb, struct _VFAT_MOVE_CONTEXT *MoveContext)
Definition: vfat.h:388

Referenced by vfatRenameEntry(), and VfatSetRenameInformation().

◆ vfatRenameEntry()

NTSTATUS vfatRenameEntry ( IN PDEVICE_EXTENSION  DeviceExt,
IN PVFATFCB  pFcb,
IN PUNICODE_STRING  FileName,
IN BOOLEAN  CaseChangeOnly 
)

Definition at line 178 of file dirwr.c.

183{
184 OEM_STRING NameA;
185 ULONG StartIndex;
186 PVOID Context = NULL;
187 LARGE_INTEGER Offset;
188 PFATX_DIR_ENTRY pDirEntry;
189 NTSTATUS Status;
190
191 DPRINT("vfatRenameEntry(%p, %p, %wZ, %d)\n", DeviceExt, pFcb, FileName, CaseChangeOnly);
192
193 Status = vfatFCBInitializeCacheFromVolume(DeviceExt, pFcb->parentFcb);
194 if (!NT_SUCCESS(Status))
195 {
196 return Status;
197 }
198
199 if (vfatVolumeIsFatX(DeviceExt))
200 {
201 VFAT_DIRENTRY_CONTEXT DirContext;
202
203 /* Open associated dir entry */
204 StartIndex = pFcb->startIndex;
205 Offset.u.HighPart = 0;
206 Offset.u.LowPart = (StartIndex * sizeof(FATX_DIR_ENTRY) / PAGE_SIZE) * PAGE_SIZE;
207 _SEH2_TRY
208 {
209 CcPinRead(pFcb->parentFcb->FileObject, &Offset, PAGE_SIZE, PIN_WAIT, &Context, (PVOID*)&pDirEntry);
210 }
211 _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
212 {
213 DPRINT1("CcPinRead(Offset %x:%x, Length %d) failed\n", Offset.u.HighPart, Offset.u.LowPart, PAGE_SIZE);
214 _SEH2_YIELD(return _SEH2_GetExceptionCode());
215 }
216 _SEH2_END;
217
218 pDirEntry = &pDirEntry[StartIndex % (PAGE_SIZE / sizeof(FATX_DIR_ENTRY))];
219
220 /* Set file name */
221 NameA.Buffer = (PCHAR)pDirEntry->Filename;
222 NameA.Length = 0;
223 NameA.MaximumLength = 42;
224 RtlUnicodeStringToOemString(&NameA, FileName, FALSE);
225 pDirEntry->FilenameLength = (unsigned char)NameA.Length;
226
227 /* Update FCB */
228 DirContext.DeviceExt = DeviceExt;
229 DirContext.ShortNameU.Length = 0;
230 DirContext.ShortNameU.MaximumLength = 0;
231 DirContext.ShortNameU.Buffer = NULL;
232 DirContext.LongNameU = *FileName;
233 DirContext.DirEntry.FatX = *pDirEntry;
234
235 CcSetDirtyPinnedData(Context, NULL);
236 CcUnpinData(Context);
237
238 Status = vfatUpdateFCB(DeviceExt, pFcb, &DirContext, pFcb->parentFcb);
239 if (NT_SUCCESS(Status))
240 {
241 CcFlushCache(&pFcb->parentFcb->SectionObjectPointers, NULL, 0, NULL);
242 }
243
244 return Status;
245 }
246 else
247 {
248 /* This we cannot handle properly, move file - would likely need love */
249 return VfatMoveEntry(DeviceExt, pFcb, FileName, pFcb->parentFcb);
250 }
251}
VfatMoveEntry
NTSTATUS VfatMoveEntry(IN PDEVICE_EXTENSION DeviceExt, IN PVFATFCB pFcb, IN PUNICODE_STRING FileName, IN PVFATFCB ParentFcb)
Definition: dirwr.c:1122
_FATXDirEntry::Filename
unsigned char Filename[42]
Definition: vfat.h:173

Referenced by VfatSetRenameInformation().

◆ VfatUpdateEntry()

NTSTATUS VfatUpdateEntry ( IN PDEVICE_EXTENSION  DeviceExt,
IN PVFATFCB  pFcb 
)

Definition at line 115 of file dirwr.c.

118{
119 PVOID Context;
120 PDIR_ENTRY PinEntry;
121 LARGE_INTEGER Offset;
122 ULONG SizeDirEntry;
123 ULONG dirIndex;
124 NTSTATUS Status;
125
126 ASSERT(pFcb);
127
128 if (vfatVolumeIsFatX(DeviceExt))
129 {
130 SizeDirEntry = sizeof(FATX_DIR_ENTRY);
131 dirIndex = pFcb->startIndex;
132 }
133 else
134 {
135 SizeDirEntry = sizeof(FAT_DIR_ENTRY);
136 dirIndex = pFcb->dirIndex;
137 }
138
139 DPRINT("updEntry dirIndex %u, PathName \'%wZ\'\n", dirIndex, &pFcb->PathNameU);
140
141 if (vfatFCBIsRoot(pFcb) || BooleanFlagOn(pFcb->Flags, FCB_IS_FAT | FCB_IS_VOLUME))
142 {
143 return STATUS_SUCCESS;
144 }
145
146 ASSERT(pFcb->parentFcb);
147
148 Status = vfatFCBInitializeCacheFromVolume(DeviceExt, pFcb->parentFcb);
149 if (!NT_SUCCESS(Status))
150 {
151 return Status;
152 }
153
154 Offset.u.HighPart = 0;
155 Offset.u.LowPart = dirIndex * SizeDirEntry;
156 _SEH2_TRY
157 {
158 CcPinRead(pFcb->parentFcb->FileObject, &Offset, SizeDirEntry, PIN_WAIT, &Context, (PVOID*)&PinEntry);
159 }
160 _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
161 {
162 DPRINT1("Failed write to \'%wZ\'.\n", &pFcb->parentFcb->PathNameU);
163 _SEH2_YIELD(return _SEH2_GetExceptionCode());
164 }
165 _SEH2_END;
166
167 pFcb->Flags &= ~FCB_IS_DIRTY;
168 RtlCopyMemory(PinEntry, &pFcb->entry, SizeDirEntry);
169 CcSetDirtyPinnedData(Context, NULL);
170 CcUnpinData(Context);
171 return STATUS_SUCCESS;
172}
FCB_IS_VOLUME
#define FCB_IS_VOLUME
Definition: ntfs.h:510
FCB_IS_FAT
#define FCB_IS_FAT
Definition: vfat.h:435

Referenced by VfatCleanupFile(), VfatCreateFile(), VfatFlushFile(), VfatSetAllocationSizeInformation(), and VfatSetBasicInformation().

Variable Documentation

◆ FatDispatch

VFAT_DISPATCH FatDispatch
Initial value:
= {
FATIsDirectoryEmpty,
FATAddEntry,
FATDelEntry,
FATGetNextDirEntry,
}
FATIsDirectoryEmpty
BOOLEAN FATIsDirectoryEmpty(PDEVICE_EXTENSION DeviceExt, PVFATFCB Fcb)
Definition: direntry.c:42
FATAddEntry
static NTSTATUS FATAddEntry(IN PDEVICE_EXTENSION DeviceExt, IN PUNICODE_STRING NameU, IN PVFATFCB *Fcb, IN PVFATFCB ParentFcb, IN ULONG RequestedOptions, IN UCHAR ReqAttr, IN PVFAT_MOVE_CONTEXT MoveContext)
Definition: dirwr.c:403
FATGetNextDirEntry
NTSTATUS FATGetNextDirEntry(PVOID *pContext, PVOID *pPage, PVFATFCB pDirFcb, PVFAT_DIRENTRY_CONTEXT DirContext, BOOLEAN First)
FATDelEntry
static NTSTATUS FATDelEntry(IN PDEVICE_EXTENSION DeviceExt, IN PVFATFCB pFcb, OUT PVFAT_MOVE_CONTEXT MoveContext)
Definition: dirwr.c:956

Definition at line 1171 of file dirwr.c.

Referenced by VfatMount().

◆ FatXDispatch

VFAT_DISPATCH FatXDispatch
Initial value:
= {
FATXIsDirectoryEmpty,
FATXAddEntry,
FATXDelEntry,
FATXGetNextDirEntry,
}
FATXIsDirectoryEmpty
BOOLEAN FATXIsDirectoryEmpty(PDEVICE_EXTENSION DeviceExt, PVFATFCB Fcb)
Definition: direntry.c:118
FATXGetNextDirEntry
NTSTATUS FATXGetNextDirEntry(PVOID *pContext, PVOID *pPage, PVFATFCB pDirFcb, PVFAT_DIRENTRY_CONTEXT DirContext, BOOLEAN First)
FATXDelEntry
static NTSTATUS FATXDelEntry(IN PDEVICE_EXTENSION DeviceExt, IN PVFATFCB pFcb, OUT PVFAT_MOVE_CONTEXT MoveContext)
Definition: dirwr.c:1048
FATXAddEntry
static NTSTATUS FATXAddEntry(IN PDEVICE_EXTENSION DeviceExt, IN PUNICODE_STRING NameU, IN PVFATFCB *Fcb, IN PVFATFCB ParentFcb, IN ULONG RequestedOptions, IN UCHAR ReqAttr, IN PVFAT_MOVE_CONTEXT MoveContext)
Definition: dirwr.c:832

Definition at line 1164 of file dirwr.c.

Referenced by VfatMount().