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https://github.com/reactos/reactos.git
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2b82fe44ea
- Create a branch to drop my ndisuio work svn path=/branches/wlan-bringup/; revision=54809
512 lines
18 KiB
C
512 lines
18 KiB
C
/*
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* COPYRIGHT: See COPYING in the top level directory
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* PROJECT: ReactOS kernel
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* FILE: drivers/fs/vfat/dir.c
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* PURPOSE: VFAT Filesystem : directory control
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* UPDATE HISTORY:
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19-12-1998 : created
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*/
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#define NDEBUG
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#include "vfat.h"
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// function like DosDateTimeToFileTime
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BOOLEAN
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FsdDosDateTimeToSystemTime (PDEVICE_EXTENSION DeviceExt, USHORT DosDate, USHORT DosTime, PLARGE_INTEGER SystemTime)
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{
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PDOSTIME pdtime = (PDOSTIME) &DosTime;
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PDOSDATE pddate = (PDOSDATE) &DosDate;
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TIME_FIELDS TimeFields;
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LARGE_INTEGER LocalTime;
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if (SystemTime == NULL)
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return FALSE;
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TimeFields.Milliseconds = 0;
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TimeFields.Second = pdtime->Second * 2;
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TimeFields.Minute = pdtime->Minute;
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TimeFields.Hour = pdtime->Hour;
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TimeFields.Day = pddate->Day;
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TimeFields.Month = pddate->Month;
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TimeFields.Year = (CSHORT)(DeviceExt->BaseDateYear + pddate->Year);
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RtlTimeFieldsToTime (&TimeFields, &LocalTime);
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ExLocalTimeToSystemTime(&LocalTime, SystemTime);
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return TRUE;
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}
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// function like FileTimeToDosDateTime
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BOOLEAN
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FsdSystemTimeToDosDateTime (PDEVICE_EXTENSION DeviceExt, PLARGE_INTEGER SystemTime, USHORT *pDosDate, USHORT *pDosTime)
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{
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PDOSTIME pdtime = (PDOSTIME) pDosTime;
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PDOSDATE pddate = (PDOSDATE) pDosDate;
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TIME_FIELDS TimeFields;
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LARGE_INTEGER LocalTime;
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if (SystemTime == NULL)
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return FALSE;
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ExSystemTimeToLocalTime (SystemTime, &LocalTime);
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RtlTimeToTimeFields (&LocalTime, &TimeFields);
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if (pdtime)
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{
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pdtime->Second = TimeFields.Second / 2;
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pdtime->Minute = TimeFields.Minute;
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pdtime->Hour = TimeFields.Hour;
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}
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if (pddate)
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{
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pddate->Day = TimeFields.Day;
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pddate->Month = TimeFields.Month;
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pddate->Year = (USHORT) (TimeFields.Year - DeviceExt->BaseDateYear);
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}
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return TRUE;
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}
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#define ULONG_ROUND_UP(x) ROUND_UP((x), (sizeof(ULONG)))
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static NTSTATUS
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VfatGetFileNameInformation (PVFAT_DIRENTRY_CONTEXT DirContext,
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PFILE_NAMES_INFORMATION pInfo, ULONG BufferLength)
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{
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if ((sizeof (FILE_DIRECTORY_INFORMATION) + DirContext->LongNameU.Length) > BufferLength)
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return STATUS_BUFFER_OVERFLOW;
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pInfo->FileNameLength = DirContext->LongNameU.Length;
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pInfo->NextEntryOffset =
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ULONG_ROUND_UP (sizeof (FILE_DIRECTORY_INFORMATION) + DirContext->LongNameU.Length);
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RtlCopyMemory (pInfo->FileName, DirContext->LongNameU.Buffer, DirContext->LongNameU.Length);
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return STATUS_SUCCESS;
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}
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static NTSTATUS
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VfatGetFileDirectoryInformation (PVFAT_DIRENTRY_CONTEXT DirContext,
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PDEVICE_EXTENSION DeviceExt,
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PFILE_DIRECTORY_INFORMATION pInfo,
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ULONG BufferLength)
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{
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if ((sizeof (FILE_DIRECTORY_INFORMATION) + DirContext->LongNameU.Length) > BufferLength)
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return STATUS_BUFFER_OVERFLOW;
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pInfo->FileNameLength = DirContext->LongNameU.Length;
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pInfo->NextEntryOffset =
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ULONG_ROUND_UP (sizeof (FILE_DIRECTORY_INFORMATION) + DirContext->LongNameU.Length);
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RtlCopyMemory (pInfo->FileName, DirContext->LongNameU.Buffer, DirContext->LongNameU.Length);
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// pInfo->FileIndex=;
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if (DeviceExt->Flags & VCB_IS_FATX)
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{
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FsdDosDateTimeToSystemTime (DeviceExt, DirContext->DirEntry.FatX.CreationDate,
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DirContext->DirEntry.FatX.CreationTime,
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&pInfo->CreationTime);
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FsdDosDateTimeToSystemTime (DeviceExt, DirContext->DirEntry.FatX.AccessDate,
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DirContext->DirEntry.FatX.AccessTime,
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&pInfo->LastAccessTime);
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FsdDosDateTimeToSystemTime (DeviceExt, DirContext->DirEntry.FatX.UpdateDate,
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DirContext->DirEntry.FatX.UpdateTime,
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&pInfo->LastWriteTime);
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pInfo->ChangeTime = pInfo->LastWriteTime;
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if (DirContext->DirEntry.FatX.Attrib & FILE_ATTRIBUTE_DIRECTORY)
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{
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pInfo->EndOfFile.QuadPart = 0;
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pInfo->AllocationSize.QuadPart = 0;
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}
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else
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{
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pInfo->EndOfFile.u.HighPart = 0;
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pInfo->EndOfFile.u.LowPart = DirContext->DirEntry.FatX.FileSize;
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/* Make allocsize a rounded up multiple of BytesPerCluster */
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pInfo->AllocationSize.u.HighPart = 0;
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pInfo->AllocationSize.u.LowPart = ROUND_UP(DirContext->DirEntry.FatX.FileSize, DeviceExt->FatInfo.BytesPerCluster);
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}
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pInfo->FileAttributes = DirContext->DirEntry.FatX.Attrib & 0x3f;
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}
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else
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{
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FsdDosDateTimeToSystemTime (DeviceExt, DirContext->DirEntry.Fat.CreationDate,
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DirContext->DirEntry.Fat.CreationTime,
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&pInfo->CreationTime);
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FsdDosDateTimeToSystemTime (DeviceExt, DirContext->DirEntry.Fat.AccessDate, 0,
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&pInfo->LastAccessTime);
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FsdDosDateTimeToSystemTime (DeviceExt, DirContext->DirEntry.Fat.UpdateDate,
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DirContext->DirEntry.Fat.UpdateTime,
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&pInfo->LastWriteTime);
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pInfo->ChangeTime = pInfo->LastWriteTime;
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if (DirContext->DirEntry.Fat.Attrib & FILE_ATTRIBUTE_DIRECTORY)
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{
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pInfo->EndOfFile.QuadPart = 0;
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pInfo->AllocationSize.QuadPart = 0;
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}
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else
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{
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pInfo->EndOfFile.u.HighPart = 0;
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pInfo->EndOfFile.u.LowPart = DirContext->DirEntry.Fat.FileSize;
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/* Make allocsize a rounded up multiple of BytesPerCluster */
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pInfo->AllocationSize.u.HighPart = 0;
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pInfo->AllocationSize.u.LowPart = ROUND_UP(DirContext->DirEntry.Fat.FileSize, DeviceExt->FatInfo.BytesPerCluster);
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}
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pInfo->FileAttributes = DirContext->DirEntry.Fat.Attrib & 0x3f;
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}
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return STATUS_SUCCESS;
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}
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static NTSTATUS
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VfatGetFileFullDirectoryInformation (PVFAT_DIRENTRY_CONTEXT DirContext,
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PDEVICE_EXTENSION DeviceExt,
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PFILE_FULL_DIR_INFORMATION pInfo,
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ULONG BufferLength)
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{
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if ((sizeof (FILE_FULL_DIR_INFORMATION) + DirContext->LongNameU.Length) > BufferLength)
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return STATUS_BUFFER_OVERFLOW;
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pInfo->FileNameLength = DirContext->LongNameU.Length;
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pInfo->NextEntryOffset =
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ULONG_ROUND_UP (sizeof (FILE_FULL_DIR_INFORMATION) + DirContext->LongNameU.Length);
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RtlCopyMemory (pInfo->FileName, DirContext->LongNameU.Buffer, DirContext->LongNameU.Length);
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// pInfo->FileIndex=;
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if (DeviceExt->Flags & VCB_IS_FATX)
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{
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FsdDosDateTimeToSystemTime (DeviceExt, DirContext->DirEntry.FatX.CreationDate,
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DirContext->DirEntry.FatX.CreationTime,
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&pInfo->CreationTime);
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FsdDosDateTimeToSystemTime (DeviceExt, DirContext->DirEntry.FatX.AccessDate,
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DirContext->DirEntry.FatX.AccessTime,
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&pInfo->LastAccessTime);
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FsdDosDateTimeToSystemTime (DeviceExt, DirContext->DirEntry.FatX.UpdateDate,
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DirContext->DirEntry.FatX.UpdateTime,
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&pInfo->LastWriteTime);
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pInfo->ChangeTime = pInfo->LastWriteTime;
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pInfo->EndOfFile.u.HighPart = 0;
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pInfo->EndOfFile.u.LowPart = DirContext->DirEntry.FatX.FileSize;
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/* Make allocsize a rounded up multiple of BytesPerCluster */
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pInfo->AllocationSize.u.HighPart = 0;
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pInfo->AllocationSize.u.LowPart = ROUND_UP(DirContext->DirEntry.FatX.FileSize, DeviceExt->FatInfo.BytesPerCluster);
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pInfo->FileAttributes = DirContext->DirEntry.FatX.Attrib & 0x3f;
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}
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else
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{
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FsdDosDateTimeToSystemTime (DeviceExt, DirContext->DirEntry.Fat.CreationDate,
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DirContext->DirEntry.Fat.CreationTime,
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&pInfo->CreationTime);
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FsdDosDateTimeToSystemTime (DeviceExt, DirContext->DirEntry.Fat.AccessDate,
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0, &pInfo->LastAccessTime);
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FsdDosDateTimeToSystemTime (DeviceExt, DirContext->DirEntry.Fat.UpdateDate,
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DirContext->DirEntry.Fat.UpdateTime,
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&pInfo->LastWriteTime);
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pInfo->ChangeTime = pInfo->LastWriteTime;
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pInfo->EndOfFile.u.HighPart = 0;
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pInfo->EndOfFile.u.LowPart = DirContext->DirEntry.Fat.FileSize;
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/* Make allocsize a rounded up multiple of BytesPerCluster */
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pInfo->AllocationSize.u.HighPart = 0;
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pInfo->AllocationSize.u.LowPart = ROUND_UP(DirContext->DirEntry.Fat.FileSize, DeviceExt->FatInfo.BytesPerCluster);
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pInfo->FileAttributes = DirContext->DirEntry.Fat.Attrib & 0x3f;
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}
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// pInfo->EaSize=;
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return STATUS_SUCCESS;
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}
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static NTSTATUS
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VfatGetFileBothInformation (PVFAT_DIRENTRY_CONTEXT DirContext,
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PDEVICE_EXTENSION DeviceExt,
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PFILE_BOTH_DIR_INFORMATION pInfo,
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ULONG BufferLength)
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{
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if ((sizeof (FILE_BOTH_DIR_INFORMATION) + DirContext->LongNameU.Length) > BufferLength)
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return STATUS_BUFFER_OVERFLOW;
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if (DeviceExt->Flags & VCB_IS_FATX)
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{
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pInfo->FileNameLength = DirContext->LongNameU.Length;
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RtlCopyMemory(pInfo->FileName, DirContext->LongNameU.Buffer, DirContext->LongNameU.Length);
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pInfo->NextEntryOffset =
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ULONG_ROUND_UP (sizeof (FILE_BOTH_DIR_INFORMATION) + DirContext->LongNameU.Length);
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pInfo->ShortName[0] = 0;
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pInfo->ShortNameLength = 0;
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// pInfo->FileIndex=;
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FsdDosDateTimeToSystemTime (DeviceExt, DirContext->DirEntry.FatX.CreationDate,
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DirContext->DirEntry.FatX.CreationTime,
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&pInfo->CreationTime);
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FsdDosDateTimeToSystemTime (DeviceExt, DirContext->DirEntry.FatX.AccessDate,
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DirContext->DirEntry.FatX.AccessTime,
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&pInfo->LastAccessTime);
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FsdDosDateTimeToSystemTime (DeviceExt, DirContext->DirEntry.FatX.UpdateDate,
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DirContext->DirEntry.FatX.UpdateTime,
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&pInfo->LastWriteTime);
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pInfo->ChangeTime = pInfo->LastWriteTime;
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if (DirContext->DirEntry.FatX.Attrib & FILE_ATTRIBUTE_DIRECTORY)
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{
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pInfo->EndOfFile.QuadPart = 0;
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pInfo->AllocationSize.QuadPart = 0;
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}
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else
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{
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pInfo->EndOfFile.u.HighPart = 0;
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pInfo->EndOfFile.u.LowPart = DirContext->DirEntry.FatX.FileSize;
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/* Make allocsize a rounded up multiple of BytesPerCluster */
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pInfo->AllocationSize.u.HighPart = 0;
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pInfo->AllocationSize.u.LowPart = ROUND_UP(DirContext->DirEntry.FatX.FileSize, DeviceExt->FatInfo.BytesPerCluster);
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}
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pInfo->FileAttributes = DirContext->DirEntry.FatX.Attrib & 0x3f;
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}
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else
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{
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pInfo->FileNameLength = DirContext->LongNameU.Length;
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pInfo->NextEntryOffset =
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ULONG_ROUND_UP (sizeof (FILE_BOTH_DIR_INFORMATION) + DirContext->LongNameU.Length);
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RtlCopyMemory(pInfo->ShortName, DirContext->ShortNameU.Buffer, DirContext->ShortNameU.Length);
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pInfo->ShortNameLength = (CCHAR)DirContext->ShortNameU.Length;
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RtlCopyMemory (pInfo->FileName, DirContext->LongNameU.Buffer, DirContext->LongNameU.Length);
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// pInfo->FileIndex=;
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FsdDosDateTimeToSystemTime (DeviceExt, DirContext->DirEntry.Fat.CreationDate,
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DirContext->DirEntry.Fat.CreationTime,
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&pInfo->CreationTime);
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FsdDosDateTimeToSystemTime (DeviceExt, DirContext->DirEntry.Fat.AccessDate, 0,
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&pInfo->LastAccessTime);
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FsdDosDateTimeToSystemTime (DeviceExt, DirContext->DirEntry.Fat.UpdateDate,
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DirContext->DirEntry.Fat.UpdateTime,
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&pInfo->LastWriteTime);
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pInfo->ChangeTime = pInfo->LastWriteTime;
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if (DirContext->DirEntry.Fat.Attrib & FILE_ATTRIBUTE_DIRECTORY)
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{
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pInfo->EndOfFile.QuadPart = 0;
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pInfo->AllocationSize.QuadPart = 0;
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}
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else
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{
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pInfo->EndOfFile.u.HighPart = 0;
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pInfo->EndOfFile.u.LowPart = DirContext->DirEntry.Fat.FileSize;
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/* Make allocsize a rounded up multiple of BytesPerCluster */
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pInfo->AllocationSize.u.HighPart = 0;
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pInfo->AllocationSize.u.LowPart = ROUND_UP(DirContext->DirEntry.Fat.FileSize, DeviceExt->FatInfo.BytesPerCluster);
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}
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pInfo->FileAttributes = DirContext->DirEntry.Fat.Attrib & 0x3f;
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}
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pInfo->EaSize=0;
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return STATUS_SUCCESS;
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}
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static NTSTATUS DoQuery (PVFAT_IRP_CONTEXT IrpContext)
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{
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NTSTATUS RC = STATUS_SUCCESS;
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long BufferLength = 0;
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PUNICODE_STRING pSearchPattern = NULL;
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FILE_INFORMATION_CLASS FileInformationClass;
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unsigned char *Buffer = NULL;
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PFILE_NAMES_INFORMATION Buffer0 = NULL;
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PVFATFCB pFcb;
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PVFATCCB pCcb;
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BOOLEAN FirstQuery = FALSE;
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BOOLEAN FirstCall = TRUE;
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VFAT_DIRENTRY_CONTEXT DirContext;
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WCHAR LongNameBuffer[LONGNAME_MAX_LENGTH + 1];
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WCHAR ShortNameBuffer[13];
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PIO_STACK_LOCATION Stack = IrpContext->Stack;
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pCcb = (PVFATCCB) IrpContext->FileObject->FsContext2;
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pFcb = (PVFATFCB) IrpContext->FileObject->FsContext;
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// determine Buffer for result :
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BufferLength = Stack->Parameters.QueryDirectory.Length;
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#if 0
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/* Do not probe the user buffer until SEH is available */
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if (IrpContext->Irp->RequestorMode != KernelMode &&
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IrpContext->Irp->MdlAddress == NULL &&
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IrpContext->Irp->UserBuffer != NULL)
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{
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ProbeForWrite(IrpContext->Irp->UserBuffer, BufferLength, 1);
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}
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#endif
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Buffer = VfatGetUserBuffer(IrpContext->Irp);
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if (!ExAcquireResourceSharedLite(&pFcb->MainResource,
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(BOOLEAN)(IrpContext->Flags & IRPCONTEXT_CANWAIT)))
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{
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RC = VfatLockUserBuffer(IrpContext->Irp, BufferLength, IoWriteAccess);
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if (NT_SUCCESS(RC))
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{
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RC = STATUS_PENDING;
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}
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return RC;
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}
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/* Obtain the callers parameters */
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#ifdef _MSC_VER
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/* HACKHACK: Bug in the MS ntifs.h header:
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* FileName is really a PUNICODE_STRING, not a PSTRING */
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pSearchPattern = (PUNICODE_STRING)Stack->Parameters.QueryDirectory.FileName;
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#else
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pSearchPattern = Stack->Parameters.QueryDirectory.FileName;
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#endif
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FileInformationClass =
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Stack->Parameters.QueryDirectory.FileInformationClass;
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if (pSearchPattern)
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{
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if (!pCcb->SearchPattern.Buffer)
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{
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FirstQuery = TRUE;
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pCcb->SearchPattern.MaximumLength = pSearchPattern->Length + sizeof(WCHAR);
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pCcb->SearchPattern.Buffer = ExAllocatePoolWithTag(NonPagedPool, pCcb->SearchPattern.MaximumLength, TAG_VFAT);
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if (!pCcb->SearchPattern.Buffer)
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{
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ExReleaseResourceLite(&pFcb->MainResource);
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return STATUS_INSUFFICIENT_RESOURCES;
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}
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RtlCopyUnicodeString(&pCcb->SearchPattern, pSearchPattern);
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pCcb->SearchPattern.Buffer[pCcb->SearchPattern.Length / sizeof(WCHAR)] = 0;
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}
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}
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else if (!pCcb->SearchPattern.Buffer)
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{
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FirstQuery = TRUE;
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pCcb->SearchPattern.MaximumLength = 2 * sizeof(WCHAR);
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pCcb->SearchPattern.Buffer = ExAllocatePoolWithTag(NonPagedPool, 2 * sizeof(WCHAR), TAG_VFAT);
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if (!pCcb->SearchPattern.Buffer)
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{
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ExReleaseResourceLite(&pFcb->MainResource);
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return STATUS_INSUFFICIENT_RESOURCES;
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}
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pCcb->SearchPattern.Buffer[0] = L'*';
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pCcb->SearchPattern.Buffer[1] = 0;
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pCcb->SearchPattern.Length = sizeof(WCHAR);
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}
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if (IrpContext->Stack->Flags & SL_INDEX_SPECIFIED)
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{
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DirContext.DirIndex = pCcb->Entry = Stack->Parameters.QueryDirectory.FileIndex;
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}
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else if (FirstQuery || (IrpContext->Stack->Flags & SL_RESTART_SCAN))
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{
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DirContext.DirIndex = pCcb->Entry = 0;
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}
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else
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{
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DirContext.DirIndex = pCcb->Entry;
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}
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DPRINT ("Buffer=%p tofind=%wZ\n", Buffer, &pCcb->SearchPattern);
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DirContext.LongNameU.Buffer = LongNameBuffer;
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DirContext.LongNameU.MaximumLength = sizeof(LongNameBuffer);
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DirContext.ShortNameU.Buffer = ShortNameBuffer;
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DirContext.ShortNameU.MaximumLength = sizeof(ShortNameBuffer);
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while (RC == STATUS_SUCCESS && BufferLength > 0)
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{
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RC = FindFile (IrpContext->DeviceExt, pFcb,
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&pCcb->SearchPattern, &DirContext, FirstCall);
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pCcb->Entry = DirContext.DirIndex;
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DPRINT ("Found %wZ, RC=%x, entry %x\n", &DirContext.LongNameU, RC, pCcb->Entry);
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FirstCall = FALSE;
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if (NT_SUCCESS (RC))
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{
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switch (FileInformationClass)
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{
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case FileNameInformation:
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RC = VfatGetFileNameInformation (&DirContext,
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(PFILE_NAMES_INFORMATION) Buffer,
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BufferLength);
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break;
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case FileDirectoryInformation:
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RC = VfatGetFileDirectoryInformation (&DirContext,
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IrpContext->DeviceExt,
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(PFILE_DIRECTORY_INFORMATION) Buffer,
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BufferLength);
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break;
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case FileFullDirectoryInformation:
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RC = VfatGetFileFullDirectoryInformation (&DirContext,
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IrpContext->DeviceExt,
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(PFILE_FULL_DIR_INFORMATION) Buffer,
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BufferLength);
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break;
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case FileBothDirectoryInformation:
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RC = VfatGetFileBothInformation (&DirContext,
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IrpContext->DeviceExt,
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(PFILE_BOTH_DIR_INFORMATION) Buffer,
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BufferLength);
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break;
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default:
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RC = STATUS_INVALID_INFO_CLASS;
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}
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if (RC == STATUS_BUFFER_OVERFLOW || RC == STATUS_INVALID_INFO_CLASS)
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{
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break;
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}
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}
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else
|
|
{
|
|
if (FirstQuery)
|
|
{
|
|
RC = STATUS_NO_SUCH_FILE;
|
|
}
|
|
else
|
|
{
|
|
RC = STATUS_NO_MORE_FILES;
|
|
}
|
|
break;
|
|
}
|
|
Buffer0 = (PFILE_NAMES_INFORMATION) Buffer;
|
|
Buffer0->FileIndex = DirContext.DirIndex;
|
|
pCcb->Entry = ++DirContext.DirIndex;
|
|
BufferLength -= Buffer0->NextEntryOffset;
|
|
if (IrpContext->Stack->Flags & SL_RETURN_SINGLE_ENTRY)
|
|
{
|
|
break;
|
|
}
|
|
Buffer += Buffer0->NextEntryOffset;
|
|
}
|
|
if (Buffer0)
|
|
{
|
|
Buffer0->NextEntryOffset = 0;
|
|
RC = STATUS_SUCCESS;
|
|
IrpContext->Irp->IoStatus.Information = Stack->Parameters.QueryDirectory.Length - BufferLength;
|
|
|
|
}
|
|
ExReleaseResourceLite(&pFcb->MainResource);
|
|
return RC;
|
|
}
|
|
|
|
|
|
NTSTATUS VfatDirectoryControl (PVFAT_IRP_CONTEXT IrpContext)
|
|
/*
|
|
* FUNCTION: directory control : read/write directory informations
|
|
*/
|
|
{
|
|
NTSTATUS RC = STATUS_SUCCESS;
|
|
IrpContext->Irp->IoStatus.Information = 0;
|
|
switch (IrpContext->MinorFunction)
|
|
{
|
|
case IRP_MN_QUERY_DIRECTORY:
|
|
RC = DoQuery (IrpContext);
|
|
break;
|
|
case IRP_MN_NOTIFY_CHANGE_DIRECTORY:
|
|
DPRINT (" vfat, dir : change\n");
|
|
RC = STATUS_NOT_IMPLEMENTED;
|
|
break;
|
|
default:
|
|
// error
|
|
DbgPrint ("unexpected minor function %x in VFAT driver\n",
|
|
IrpContext->MinorFunction);
|
|
RC = STATUS_INVALID_DEVICE_REQUEST;
|
|
break;
|
|
}
|
|
if (RC == STATUS_PENDING)
|
|
{
|
|
RC = VfatQueueRequest(IrpContext);
|
|
}
|
|
else
|
|
{
|
|
IrpContext->Irp->IoStatus.Status = RC;
|
|
IoCompleteRequest (IrpContext->Irp, IO_NO_INCREMENT);
|
|
VfatFreeIrpContext(IrpContext);
|
|
}
|
|
return RC;
|
|
}
|
|
|
|
|