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[FASTFAT]

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Move ReadVolumeLabel() to fsctl.c close to functions that need it

svn path=/trunk/; revision=73829
This commit is contained in:
Pierre Schweitzer 2017-02-18 18:35:48 +00:00
parent 9a213745ca
commit 9c5c0b479a
3 changed files with 109 additions and 113 deletions
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108
reactos/drivers/filesystems/fastfat/create.c
View file

@ -94,114 +94,6 @@ vfat8Dot3ToString(
DPRINT("'%wZ'\n", NameU); DPRINT("'%wZ'\n", NameU);
} }
/*
* FUNCTION: Read the volume label
*/
NTSTATUS
ReadVolumeLabel(
PDEVICE_EXTENSION DeviceExt,
PVPB Vpb)
{
PVOID Context = NULL;
ULONG DirIndex = 0;
PDIR_ENTRY Entry;
PVFATFCB pFcb;
LARGE_INTEGER FileOffset;
UNICODE_STRING NameU;
ULONG SizeDirEntry;
ULONG EntriesPerPage;
OEM_STRING StringO;
NTSTATUS Status = STATUS_SUCCESS;
NameU.Buffer = Vpb->VolumeLabel;
NameU.Length = 0;
NameU.MaximumLength = sizeof(Vpb->VolumeLabel);
*(Vpb->VolumeLabel) = 0;
Vpb->VolumeLabelLength = 0;
if (vfatVolumeIsFatX(DeviceExt))
{
SizeDirEntry = sizeof(FATX_DIR_ENTRY);
EntriesPerPage = FATX_ENTRIES_PER_PAGE;
}
else
{
SizeDirEntry = sizeof(FAT_DIR_ENTRY);
EntriesPerPage = FAT_ENTRIES_PER_PAGE;
}
ExAcquireResourceExclusiveLite(&DeviceExt->DirResource, TRUE);
pFcb = vfatOpenRootFCB(DeviceExt);
ExReleaseResourceLite(&DeviceExt->DirResource);
FileOffset.QuadPart = 0;
_SEH2_TRY
{
CcMapData(pFcb->FileObject, &FileOffset, SizeDirEntry, MAP_WAIT, &Context, (PVOID*)&Entry);
}
_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
{
Status = _SEH2_GetExceptionCode();
}
_SEH2_END;
if (NT_SUCCESS(Status))
{
while (TRUE)
{
if (ENTRY_VOLUME(DeviceExt, Entry))
{
/* copy volume label */
if (vfatVolumeIsFatX(DeviceExt))
{
StringO.Buffer = (PCHAR)Entry->FatX.Filename;
StringO.MaximumLength = StringO.Length = Entry->FatX.FilenameLength;
RtlOemStringToUnicodeString(&NameU, &StringO, FALSE);
}
else
{
vfat8Dot3ToString(&Entry->Fat, &NameU);
}
Vpb->VolumeLabelLength = NameU.Length;
break;
}
if (ENTRY_END(DeviceExt, Entry))
{
break;
}
DirIndex++;
Entry = (PDIR_ENTRY)((ULONG_PTR)Entry + SizeDirEntry);
if ((DirIndex % EntriesPerPage) == 0)
{
CcUnpinData(Context);
FileOffset.u.LowPart += PAGE_SIZE;
_SEH2_TRY
{
CcMapData(pFcb->FileObject, &FileOffset, SizeDirEntry, MAP_WAIT, &Context, (PVOID*)&Entry);
}
_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
{
Status = _SEH2_GetExceptionCode();
}
_SEH2_END;
if (!NT_SUCCESS(Status))
{
Context = NULL;
break;
}
}
}
if (Context)
{
CcUnpinData(Context);
}
}
ExAcquireResourceExclusiveLite(&DeviceExt->DirResource, TRUE);
vfatReleaseFCB(DeviceExt, pFcb);
ExReleaseResourceLite(&DeviceExt->DirResource);
return STATUS_SUCCESS;
}
/* /*
* FUNCTION: Find a file * FUNCTION: Find a file
*/ */

109
reactos/drivers/filesystems/fastfat/fsctl.c
View file

@ -338,6 +338,115 @@ VfatHasFileSystem(
return Status; return Status;
} }
/*
* FUNCTION: Read the volume label
*/
static
NTSTATUS
ReadVolumeLabel(
PDEVICE_EXTENSION DeviceExt,
PVPB Vpb)
{
PVOID Context = NULL;
ULONG DirIndex = 0;
PDIR_ENTRY Entry;
PVFATFCB pFcb;
LARGE_INTEGER FileOffset;
UNICODE_STRING NameU;
ULONG SizeDirEntry;
ULONG EntriesPerPage;
OEM_STRING StringO;
NTSTATUS Status = STATUS_SUCCESS;
NameU.Buffer = Vpb->VolumeLabel;
NameU.Length = 0;
NameU.MaximumLength = sizeof(Vpb->VolumeLabel);
*(Vpb->VolumeLabel) = 0;
Vpb->VolumeLabelLength = 0;
if (vfatVolumeIsFatX(DeviceExt))
{
SizeDirEntry = sizeof(FATX_DIR_ENTRY);
EntriesPerPage = FATX_ENTRIES_PER_PAGE;
}
else
{
SizeDirEntry = sizeof(FAT_DIR_ENTRY);
EntriesPerPage = FAT_ENTRIES_PER_PAGE;
}
ExAcquireResourceExclusiveLite(&DeviceExt->DirResource, TRUE);
pFcb = vfatOpenRootFCB(DeviceExt);
ExReleaseResourceLite(&DeviceExt->DirResource);
FileOffset.QuadPart = 0;
_SEH2_TRY
{
CcMapData(pFcb->FileObject, &FileOffset, SizeDirEntry, MAP_WAIT, &Context, (PVOID*)&Entry);
}
_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
{
Status = _SEH2_GetExceptionCode();
}
_SEH2_END;
if (NT_SUCCESS(Status))
{
while (TRUE)
{
if (ENTRY_VOLUME(DeviceExt, Entry))
{
/* copy volume label */
if (vfatVolumeIsFatX(DeviceExt))
{
StringO.Buffer = (PCHAR)Entry->FatX.Filename;
StringO.MaximumLength = StringO.Length = Entry->FatX.FilenameLength;
RtlOemStringToUnicodeString(&NameU, &StringO, FALSE);
}
else
{
vfat8Dot3ToString(&Entry->Fat, &NameU);
}
Vpb->VolumeLabelLength = NameU.Length;
break;
}
if (ENTRY_END(DeviceExt, Entry))
{
break;
}
DirIndex++;
Entry = (PDIR_ENTRY)((ULONG_PTR)Entry + SizeDirEntry);
if ((DirIndex % EntriesPerPage) == 0)
{
CcUnpinData(Context);
FileOffset.u.LowPart += PAGE_SIZE;
_SEH2_TRY
{
CcMapData(pFcb->FileObject, &FileOffset, SizeDirEntry, MAP_WAIT, &Context, (PVOID*)&Entry);
}
_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
{
Status = _SEH2_GetExceptionCode();
}
_SEH2_END;
if (!NT_SUCCESS(Status))
{
Context = NULL;
break;
}
}
}
if (Context)
{
CcUnpinData(Context);
}
}
ExAcquireResourceExclusiveLite(&DeviceExt->DirResource, TRUE);
vfatReleaseFCB(DeviceExt, pFcb);
ExReleaseResourceLite(&DeviceExt->DirResource);
return STATUS_SUCCESS;
}
/* /*
* FUNCTION: Mount the filesystem * FUNCTION: Mount the filesystem

5
reactos/drivers/filesystems/fastfat/vfat.h
View file

@ -662,11 +662,6 @@ vfat8Dot3ToString(
PFAT_DIR_ENTRY pEntry, PFAT_DIR_ENTRY pEntry,
PUNICODE_STRING NameU); PUNICODE_STRING NameU);
NTSTATUS
ReadVolumeLabel(
PDEVICE_EXTENSION DeviceExt,
PVPB Vpb);
/* dir.c */ /* dir.c */
NTSTATUS NTSTATUS