/* ------------------------------------------------------- INCLUDES */
-#define NDEBUG
#include "vfat.h"
+#define NDEBUG
+#include <debug.h>
+
ULONG
-vfatDirEntryGetFirstCluster (PDEVICE_EXTENSION pDeviceExt,
- PDIR_ENTRY pFatDirEntry)
+vfatDirEntryGetFirstCluster(
+ PDEVICE_EXTENSION pDeviceExt,
+ PDIR_ENTRY pFatDirEntry)
{
ULONG cluster;
cluster = pFatDirEntry->Fat.FirstCluster |
(pFatDirEntry->Fat.FirstClusterHigh << 16);
}
- else if (pDeviceExt->Flags & VCB_IS_FATX)
+ else if (vfatVolumeIsFatX(pDeviceExt))
{
cluster = pFatDirEntry->FatX.FirstCluster;
}
return cluster;
}
-static
BOOLEAN
-FATIsDirectoryEmpty(PVFATFCB Fcb)
+FATIsDirectoryEmpty(
+ PDEVICE_EXTENSION DeviceExt,
+ PVFATFCB Fcb)
{
LARGE_INTEGER FileOffset;
PVOID Context = NULL;
PFAT_DIR_ENTRY FatDirEntry;
ULONG Index, MaxIndex;
+ NTSTATUS Status;
if (vfatFCBIsRoot(Fcb))
{
FileOffset.QuadPart = 0;
MaxIndex = Fcb->RFCB.FileSize.u.LowPart / sizeof(FAT_DIR_ENTRY);
+ Status = vfatFCBInitializeCacheFromVolume(DeviceExt, Fcb);
+ if (!NT_SUCCESS(Status))
+ {
+ return FALSE;
+ }
+
while (Index < MaxIndex)
{
if (Context == NULL || (Index % FAT_ENTRIES_PER_PAGE) == 0)
CcUnpinData(Context);
}
- if (!CcMapData(Fcb->FileObject, &FileOffset, sizeof(FAT_DIR_ENTRY), TRUE, &Context, (PVOID*)&FatDirEntry))
+ _SEH2_TRY
+ {
+ CcMapData(Fcb->FileObject, &FileOffset, sizeof(FAT_DIR_ENTRY), MAP_WAIT, &Context, (PVOID*)&FatDirEntry);
+ }
+ _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
{
- return TRUE;
+ _SEH2_YIELD(return TRUE);
}
+ _SEH2_END;
FatDirEntry += Index % FAT_ENTRIES_PER_PAGE;
FileOffset.QuadPart += PAGE_SIZE;
return TRUE;
}
-static
BOOLEAN
-FATXIsDirectoryEmpty(PVFATFCB Fcb)
+FATXIsDirectoryEmpty(
+ PDEVICE_EXTENSION DeviceExt,
+ PVFATFCB Fcb)
{
LARGE_INTEGER FileOffset;
PVOID Context = NULL;
PFATX_DIR_ENTRY FatXDirEntry;
ULONG Index = 0, MaxIndex;
+ NTSTATUS Status;
FileOffset.QuadPart = 0;
MaxIndex = Fcb->RFCB.FileSize.u.LowPart / sizeof(FATX_DIR_ENTRY);
+ Status = vfatFCBInitializeCacheFromVolume(DeviceExt, Fcb);
+ if (!NT_SUCCESS(Status))
+ {
+ return FALSE;
+ }
+
while (Index < MaxIndex)
{
if (Context == NULL || (Index % FATX_ENTRIES_PER_PAGE) == 0)
CcUnpinData(Context);
}
- if (!CcMapData(Fcb->FileObject, &FileOffset, sizeof(FATX_DIR_ENTRY), TRUE, &Context, (PVOID*)&FatXDirEntry))
+ _SEH2_TRY
{
- return TRUE;
+ CcMapData(Fcb->FileObject, &FileOffset, sizeof(FATX_DIR_ENTRY), MAP_WAIT, &Context, (PVOID*)&FatXDirEntry);
}
+ _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
+ {
+ _SEH2_YIELD(return TRUE);
+ }
+ _SEH2_END;
FatXDirEntry += Index % FATX_ENTRIES_PER_PAGE;
FileOffset.QuadPart += PAGE_SIZE;
return TRUE;
}
-BOOLEAN
-VfatIsDirectoryEmpty(PVFATFCB Fcb)
-{
- if (Fcb->Flags & FCB_IS_FATX_ENTRY)
- return FATXIsDirectoryEmpty(Fcb);
- else
- return FATIsDirectoryEmpty(Fcb);
-}
-
NTSTATUS
-FATGetNextDirEntry(PVOID *pContext,
- PVOID *pPage,
- IN PVFATFCB pDirFcb,
- PVFAT_DIRENTRY_CONTEXT DirContext,
- BOOLEAN First)
+FATGetNextDirEntry(
+ PVOID *pContext,
+ PVOID *pPage,
+ IN PVFATFCB pDirFcb,
+ PVFAT_DIRENTRY_CONTEXT DirContext,
+ BOOLEAN First)
{
ULONG dirMap;
PWCHAR pName;
BOOLEAN Valid = TRUE;
BOOLEAN Back = FALSE;
+ NTSTATUS Status;
+
DirContext->LongNameU.Length = 0;
DirContext->LongNameU.Buffer[0] = UNICODE_NULL;
FileOffset.u.HighPart = 0;
FileOffset.u.LowPart = ROUND_DOWN(DirContext->DirIndex * sizeof(FAT_DIR_ENTRY), PAGE_SIZE);
+ Status = vfatFCBInitializeCacheFromVolume(DirContext->DeviceExt, pDirFcb);
+ if (!NT_SUCCESS(Status))
+ {
+ return Status;
+ }
+
if (*pContext == NULL || (DirContext->DirIndex % FAT_ENTRIES_PER_PAGE) == 0)
{
if (*pContext != NULL)
CcUnpinData(*pContext);
}
- if (FileOffset.u.LowPart >= pDirFcb->RFCB.FileSize.u.LowPart ||
- !CcMapData(pDirFcb->FileObject, &FileOffset, PAGE_SIZE, TRUE, pContext, pPage))
+ if (FileOffset.u.LowPart >= pDirFcb->RFCB.FileSize.u.LowPart)
{
*pContext = NULL;
return STATUS_NO_MORE_ENTRIES;
}
+
+ _SEH2_TRY
+ {
+ CcMapData(pDirFcb->FileObject, &FileOffset, PAGE_SIZE, MAP_WAIT, pContext, pPage);
+ }
+ _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
+ {
+ *pContext = NULL;
+ _SEH2_YIELD(return STATUS_NO_MORE_ENTRIES);
+ }
+ _SEH2_END;
}
fatDirEntry = (PFAT_DIR_ENTRY)(*pPage) + DirContext->DirIndex % FAT_ENTRIES_PER_PAGE;
CcUnpinData(*pContext);
FileOffset.u.LowPart -= PAGE_SIZE;
- if (FileOffset.u.LowPart >= pDirFcb->RFCB.FileSize.u.LowPart ||
- !CcMapData(pDirFcb->FileObject, &FileOffset, PAGE_SIZE, TRUE, pContext, pPage))
+ if (FileOffset.u.LowPart >= pDirFcb->RFCB.FileSize.u.LowPart)
{
*pContext = NULL;
return STATUS_NO_MORE_ENTRIES;
}
+ _SEH2_TRY
+ {
+ CcMapData(pDirFcb->FileObject, &FileOffset, PAGE_SIZE, MAP_WAIT, pContext, pPage);
+ }
+ _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
+ {
+ *pContext = NULL;
+ _SEH2_YIELD(return STATUS_NO_MORE_ENTRIES);
+ }
+ _SEH2_END;
+
fatDirEntry = (PFAT_DIR_ENTRY)(*pPage) + DirContext->DirIndex % FAT_ENTRIES_PER_PAGE;
longNameEntry = (slot*) fatDirEntry;
}
CcUnpinData(*pContext);
FileOffset.u.LowPart += PAGE_SIZE;
- if (FileOffset.u.LowPart >= pDirFcb->RFCB.FileSize.u.LowPart ||
- !CcMapData(pDirFcb->FileObject, &FileOffset, PAGE_SIZE, TRUE, pContext, pPage))
+ if (FileOffset.u.LowPart >= pDirFcb->RFCB.FileSize.u.LowPart)
{
*pContext = NULL;
return STATUS_NO_MORE_ENTRIES;
}
+ _SEH2_TRY
+ {
+ CcMapData(pDirFcb->FileObject, &FileOffset, PAGE_SIZE, MAP_WAIT, pContext, pPage);
+ }
+ _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
+ {
+ *pContext = NULL;
+ _SEH2_YIELD(return STATUS_NO_MORE_ENTRIES);
+ }
+ _SEH2_END;
+
fatDirEntry = (PFAT_DIR_ENTRY)*pPage;
longNameEntry = (slot*) *pPage;
}
{
if (dirMap == 0)
{
- DPRINT (" long name entry found at %d\n", DirContext->DirIndex);
+ DPRINT (" long name entry found at %u\n", DirContext->DirIndex);
RtlZeroMemory(DirContext->LongNameU.Buffer, DirContext->LongNameU.MaximumLength);
CheckSum = longNameEntry->alias_checksum;
Valid = TRUE;
index = longNameEntry->id & 0x3f; // Note: it can be 0 for corrupted FS
- /* Make sure index is valid and we have enaugh space in buffer
+ /* Make sure index is valid and we have enough space in buffer
(we count one char for \0) */
if (index > 0 &&
index * 13 < DirContext->LongNameU.MaximumLength / sizeof(WCHAR))
CcUnpinData(*pContext);
FileOffset.u.LowPart += PAGE_SIZE;
- if (FileOffset.u.LowPart >= pDirFcb->RFCB.FileSize.u.LowPart ||
- !CcMapData(pDirFcb->FileObject, &FileOffset, PAGE_SIZE, TRUE, pContext, pPage))
+ if (FileOffset.u.LowPart >= pDirFcb->RFCB.FileSize.u.LowPart)
{
*pContext = NULL;
return STATUS_NO_MORE_ENTRIES;
}
+ _SEH2_TRY
+ {
+ CcMapData(pDirFcb->FileObject, &FileOffset, PAGE_SIZE, MAP_WAIT, pContext, pPage);
+ }
+ _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
+ {
+ *pContext = NULL;
+ _SEH2_YIELD(return STATUS_NO_MORE_ENTRIES);
+ }
+ _SEH2_END;
+
fatDirEntry = (PFAT_DIR_ENTRY)*pPage;
longNameEntry = (slot*) *pPage;
}
return STATUS_SUCCESS;
}
-NTSTATUS FATXGetNextDirEntry(PVOID * pContext,
- PVOID * pPage,
- IN PVFATFCB pDirFcb,
- PVFAT_DIRENTRY_CONTEXT DirContext,
- BOOLEAN First)
+NTSTATUS
+FATXGetNextDirEntry(
+ PVOID *pContext,
+ PVOID *pPage,
+ IN PVFATFCB pDirFcb,
+ PVFAT_DIRENTRY_CONTEXT DirContext,
+ BOOLEAN First)
{
- LARGE_INTEGER FileOffset;
- PFATX_DIR_ENTRY fatxDirEntry;
- OEM_STRING StringO;
- ULONG DirIndex = DirContext->DirIndex;
-
- FileOffset.u.HighPart = 0;
-
- if (!vfatFCBIsRoot(pDirFcb))
- {
- /* need to add . and .. entries */
- switch (DirContext->DirIndex)
- {
- case 0: /* entry . */
- {
- DirContext->ShortNameU.Buffer[0] = 0;
- DirContext->ShortNameU.Length = 0;
- wcscpy(DirContext->LongNameU.Buffer, L".");
- DirContext->LongNameU.Length = sizeof(WCHAR);
- RtlCopyMemory(&DirContext->DirEntry.FatX, &pDirFcb->entry.FatX, sizeof(FATX_DIR_ENTRY));
- DirContext->DirEntry.FatX.Filename[0] = '.';
- DirContext->DirEntry.FatX.FilenameLength = 1;
- DirContext->StartIndex = 0;
- return STATUS_SUCCESS;
- }
- case 1: /* entry .. */
- {
- DirContext->ShortNameU.Buffer[0] = 0;
- DirContext->ShortNameU.Length = 0;
- wcscpy(DirContext->LongNameU.Buffer, L"..");
- DirContext->LongNameU.Length = 2 * sizeof(WCHAR);
- RtlCopyMemory(&DirContext->DirEntry.FatX, &pDirFcb->entry.FatX, sizeof(FATX_DIR_ENTRY));
- DirContext->DirEntry.FatX.Filename[0] = DirContext->DirEntry.FatX.Filename[1] = '.';
- DirContext->DirEntry.FatX.FilenameLength = 2;
- DirContext->StartIndex = 1;
- return STATUS_SUCCESS;
- }
- default:
- DirIndex -= 2;
- }
- }
-
- if (*pContext == NULL || (DirIndex % FATX_ENTRIES_PER_PAGE) == 0)
- {
- if (*pContext != NULL)
- {
- CcUnpinData(*pContext);
- }
- FileOffset.u.LowPart = ROUND_DOWN(DirIndex * sizeof(FATX_DIR_ENTRY), PAGE_SIZE);
- if (FileOffset.u.LowPart >= pDirFcb->RFCB.FileSize.u.LowPart ||
- !CcMapData(pDirFcb->FileObject, &FileOffset, PAGE_SIZE, TRUE, pContext, pPage))
- {
- *pContext = NULL;
- return STATUS_NO_MORE_ENTRIES;
- }
- }
-
- fatxDirEntry = (PFATX_DIR_ENTRY)(*pPage) + DirIndex % FATX_ENTRIES_PER_PAGE;
-
- DirContext->StartIndex = DirContext->DirIndex;
-
- while (TRUE)
- {
- if (FATX_ENTRY_END(fatxDirEntry))
- {
- CcUnpinData(*pContext);
- *pContext = NULL;
- return STATUS_NO_MORE_ENTRIES;
- }
-
- if (!FATX_ENTRY_DELETED(fatxDirEntry))
- {
- RtlCopyMemory(&DirContext->DirEntry.FatX, fatxDirEntry, sizeof(FATX_DIR_ENTRY));
- break;
- }
- DirContext->DirIndex++;
- DirContext->StartIndex++;
- DirIndex++;
- if ((DirIndex % FATX_ENTRIES_PER_PAGE) == 0)
- {
- CcUnpinData(*pContext);
- FileOffset.u.LowPart += PAGE_SIZE;
- if (FileOffset.u.LowPart >= pDirFcb->RFCB.FileSize.u.LowPart ||
- !CcMapData(pDirFcb->FileObject, &FileOffset, PAGE_SIZE, TRUE, pContext, pPage))
- {
+ LARGE_INTEGER FileOffset;
+ PFATX_DIR_ENTRY fatxDirEntry;
+ OEM_STRING StringO;
+ ULONG DirIndex = DirContext->DirIndex;
+ NTSTATUS Status;
+
+ FileOffset.u.HighPart = 0;
+
+ UNREFERENCED_PARAMETER(First);
+
+ if (!vfatFCBIsRoot(pDirFcb))
+ {
+ /* need to add . and .. entries */
+ switch (DirContext->DirIndex)
+ {
+ case 0: /* entry . */
+ DirContext->ShortNameU.Buffer[0] = 0;
+ DirContext->ShortNameU.Length = 0;
+ wcscpy(DirContext->LongNameU.Buffer, L".");
+ DirContext->LongNameU.Length = sizeof(WCHAR);
+ RtlCopyMemory(&DirContext->DirEntry.FatX, &pDirFcb->entry.FatX, sizeof(FATX_DIR_ENTRY));
+ DirContext->DirEntry.FatX.Filename[0] = '.';
+ DirContext->DirEntry.FatX.FilenameLength = 1;
+ DirContext->StartIndex = 0;
+ return STATUS_SUCCESS;
+
+ case 1: /* entry .. */
+ DirContext->ShortNameU.Buffer[0] = 0;
+ DirContext->ShortNameU.Length = 0;
+ wcscpy(DirContext->LongNameU.Buffer, L"..");
+ DirContext->LongNameU.Length = 2 * sizeof(WCHAR);
+ RtlCopyMemory(&DirContext->DirEntry.FatX, &pDirFcb->entry.FatX, sizeof(FATX_DIR_ENTRY));
+ DirContext->DirEntry.FatX.Filename[0] = DirContext->DirEntry.FatX.Filename[1] = '.';
+ DirContext->DirEntry.FatX.FilenameLength = 2;
+ DirContext->StartIndex = 1;
+ return STATUS_SUCCESS;
+
+ default:
+ DirIndex -= 2;
+ }
+ }
+
+ Status = vfatFCBInitializeCacheFromVolume(DirContext->DeviceExt, pDirFcb);
+ if (!NT_SUCCESS(Status))
+ {
+ return Status;
+ }
+
+ if (*pContext == NULL || (DirIndex % FATX_ENTRIES_PER_PAGE) == 0)
+ {
+ if (*pContext != NULL)
+ {
+ CcUnpinData(*pContext);
+ }
+ FileOffset.u.LowPart = ROUND_DOWN(DirIndex * sizeof(FATX_DIR_ENTRY), PAGE_SIZE);
+ if (FileOffset.u.LowPart >= pDirFcb->RFCB.FileSize.u.LowPart)
+ {
+ *pContext = NULL;
+ return STATUS_NO_MORE_ENTRIES;
+ }
+
+ _SEH2_TRY
+ {
+ CcMapData(pDirFcb->FileObject, &FileOffset, PAGE_SIZE, MAP_WAIT, pContext, pPage);
+ }
+ _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
+ {
+ *pContext = NULL;
+ _SEH2_YIELD(return STATUS_NO_MORE_ENTRIES);
+ }
+ _SEH2_END;
+ }
+
+ fatxDirEntry = (PFATX_DIR_ENTRY)(*pPage) + DirIndex % FATX_ENTRIES_PER_PAGE;
+
+ DirContext->StartIndex = DirContext->DirIndex;
+
+ while (TRUE)
+ {
+ if (FATX_ENTRY_END(fatxDirEntry))
+ {
+ CcUnpinData(*pContext);
*pContext = NULL;
- return STATUS_NO_MORE_ENTRIES;
- }
- fatxDirEntry = (PFATX_DIR_ENTRY)*pPage;
- }
- else
- {
- fatxDirEntry++;
- }
- }
- DirContext->ShortNameU.Buffer[0] = 0;
- DirContext->ShortNameU.Length = 0;
- StringO.Buffer = (PCHAR)fatxDirEntry->Filename;
- StringO.Length = StringO.MaximumLength = fatxDirEntry->FilenameLength;
- RtlOemStringToUnicodeString(&DirContext->LongNameU, &StringO, FALSE);
- return STATUS_SUCCESS;
+ return STATUS_NO_MORE_ENTRIES;
+ }
+
+ if (!FATX_ENTRY_DELETED(fatxDirEntry))
+ {
+ RtlCopyMemory(&DirContext->DirEntry.FatX, fatxDirEntry, sizeof(FATX_DIR_ENTRY));
+ break;
+ }
+ DirContext->DirIndex++;
+ DirContext->StartIndex++;
+ DirIndex++;
+ if ((DirIndex % FATX_ENTRIES_PER_PAGE) == 0)
+ {
+ CcUnpinData(*pContext);
+ FileOffset.u.LowPart += PAGE_SIZE;
+ if (FileOffset.u.LowPart >= pDirFcb->RFCB.FileSize.u.LowPart)
+ {
+ *pContext = NULL;
+ return STATUS_NO_MORE_ENTRIES;
+ }
+
+ _SEH2_TRY
+ {
+ CcMapData(pDirFcb->FileObject, &FileOffset, PAGE_SIZE, MAP_WAIT, pContext, pPage);
+ }
+ _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
+ {
+ *pContext = NULL;
+ _SEH2_YIELD(return STATUS_NO_MORE_ENTRIES);
+ }
+ _SEH2_END;
+
+ fatxDirEntry = (PFATX_DIR_ENTRY)*pPage;
+ }
+ else
+ {
+ fatxDirEntry++;
+ }
+ }
+ DirContext->ShortNameU.Buffer[0] = 0;
+ DirContext->ShortNameU.Length = 0;
+ StringO.Buffer = (PCHAR)fatxDirEntry->Filename;
+ StringO.Length = StringO.MaximumLength = fatxDirEntry->FilenameLength;
+ RtlOemStringToUnicodeString(&DirContext->LongNameU, &StringO, FALSE);
+ return STATUS_SUCCESS;
}
projects / reactos.git / blobdiff