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new file for driver from Jean
svn path=/trunk/; revision=139
This commit is contained in:
Rex Jolliff
parent
43fd2f2579
commit
6ce4528a80
318
reactos/drivers/fs/vfat/dir.c
Normal file
318
reactos/drivers/fs/vfat/dir.c
Normal file
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/*
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* COPYRIGHT: See COPYING in the top level directory
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* PROJECT: ReactOS kernel
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* FILE: services/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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#include <ddk/ntddk.h>
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#include <internal/string.h>
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#include <wstring.h>
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#include <ddk/cctypes.h>
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#include <ddk/zwtypes.h>
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#define NDEBUG
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#include <internal/debug.h>
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#include "vfat.h"
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// buggy function, waiting the real function
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BOOL fsdDosDateTimeToFileTime(WORD wDosDate,WORD wDosTime, TIME *FileTime)
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{
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WORD Day,Month,Year,Second,Minute,Hour;
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long long int *pTime=(long long int *)FileTime;
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long long int mult;
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Day=wDosDate&0x001f;
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Month= (wDosDate&0x00e0)>>5;//1=January
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Year= ((wDosDate&0xff00)>>8)+1980;
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Second=(wDosTime&0x001f)<<1;
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Minute=(wDosTime&0x07e0)>>5;
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Hour= (wDosTime&0xf100)>>11;
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mult=10000000;
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*pTime=Second*mult;
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mult *=60;
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*pTime +=Minute*mult;
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mult *=60;
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*pTime +=Hour*mult;
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mult *=24;
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*pTime +=(Day-1)*mult;
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*pTime +=(Month-1)*mult*30;//FIXME : not always 30 days in a month
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*pTime +=(Year-1601)*mult*365;//FIXME : not always 365 days in a year
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return TRUE;
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}
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#define DosDateTimeToFileTime fsdDosDateTimeToFileTime
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unsigned long vfat_wstrlen(PWSTR s)
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{
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WCHAR c=' ';
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unsigned int len=0;
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while(c!=0) {
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c=*s;
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s++;
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len++;
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};
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s-=len;
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return len-1;
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}
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#define DWORD_ROUND_UP(x) ( (((ULONG)(x))%32) ? ((((ULONG)x)&(~0x1f))+0x20) : ((ULONG)x) )
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NTSTATUS FsdGetFileNameInformation(PFCB pFcb,
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PFILE_NAMES_INFORMATION pInfo,ULONG BufferLength)
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{
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ULONG Length;
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Length=vfat_wstrlen(pFcb->ObjectName);
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if( (sizeof(FILE_DIRECTORY_INFORMATION)+Length) >BufferLength)
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return STATUS_BUFFER_OVERFLOW;
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pInfo->FileNameLength=Length;
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pInfo->NextEntryOffset=DWORD_ROUND_UP(sizeof(FILE_DIRECTORY_INFORMATION)+Length);
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memcpy(pInfo->FileName,pFcb->ObjectName
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,sizeof(WCHAR)*(pInfo->FileNameLength));
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return STATUS_SUCCESS;
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}
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NTSTATUS FsdGetFileDirectoryInformation(PFCB pFcb,
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PDEVICE_EXTENSION DeviceExt,
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PFILE_DIRECTORY_INFORMATION pInfo,ULONG BufferLength)
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{
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unsigned long long AllocSize;
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ULONG Length;
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Length=vfat_wstrlen(pFcb->ObjectName);
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if( (sizeof(FILE_DIRECTORY_INFORMATION)+Length) >BufferLength)
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return STATUS_BUFFER_OVERFLOW;
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pInfo->FileNameLength=Length;
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pInfo->NextEntryOffset=DWORD_ROUND_UP(sizeof(FILE_DIRECTORY_INFORMATION)+Length);
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memcpy(pInfo->FileName,pFcb->ObjectName
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,sizeof(WCHAR)*(pInfo->FileNameLength));
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// pInfo->FileIndex=;
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DosDateTimeToFileTime(pFcb->entry.CreationDate,pFcb->entry.CreationTime
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,&pInfo->CreationTime);
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DosDateTimeToFileTime(pFcb->entry.AccessDate,0
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,&pInfo->LastAccessTime);
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DosDateTimeToFileTime(pFcb->entry.UpdateDate,pFcb->entry.UpdateTime
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,&pInfo->LastWriteTime);
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DosDateTimeToFileTime(pFcb->entry.UpdateDate,pFcb->entry.UpdateTime
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,&pInfo->ChangeTime);
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pInfo->EndOfFile=RtlConvertUlongToLargeInteger(pFcb->entry.FileSize);
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/* Make allocsize a rounded up multiple of BytesPerCluster */
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AllocSize = ((pFcb->entry.FileSize + DeviceExt->BytesPerCluster - 1) /
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DeviceExt->BytesPerCluster) *
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DeviceExt->BytesPerCluster;
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pInfo->AllocationSize.LowPart= AllocSize;
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pInfo->AllocationSize.HighPart= AllocSize >>32;
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pInfo->FileAttributes=pFcb->entry.Attrib;
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return STATUS_SUCCESS;
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}
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NTSTATUS FsdGetFileFullDirectoryInformation(PFCB pFcb,
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PDEVICE_EXTENSION DeviceExt,
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PFILE_FULL_DIRECTORY_INFORMATION pInfo,ULONG BufferLength)
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{
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unsigned long long AllocSize;
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ULONG Length;
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Length=vfat_wstrlen(pFcb->ObjectName);
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if( (sizeof(FILE_FULL_DIRECTORY_INFORMATION)+Length) >BufferLength)
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return STATUS_BUFFER_OVERFLOW;
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pInfo->FileNameLength=Length;
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pInfo->NextEntryOffset=DWORD_ROUND_UP(sizeof(FILE_FULL_DIRECTORY_INFORMATION)+Length);
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memcpy(pInfo->FileName,pFcb->ObjectName
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,sizeof(WCHAR)*(pInfo->FileNameLength));
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// pInfo->FileIndex=;
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DosDateTimeToFileTime(pFcb->entry.CreationDate,pFcb->entry.CreationTime
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,&pInfo->CreationTime);
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DosDateTimeToFileTime(pFcb->entry.AccessDate,0
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,&pInfo->LastAccessTime);
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DosDateTimeToFileTime(pFcb->entry.UpdateDate,pFcb->entry.UpdateTime
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,&pInfo->LastWriteTime);
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DosDateTimeToFileTime(pFcb->entry.UpdateDate,pFcb->entry.UpdateTime
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,&pInfo->ChangeTime);
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pInfo->EndOfFile=RtlConvertUlongToLargeInteger(pFcb->entry.FileSize);
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/* Make allocsize a rounded up multiple of BytesPerCluster */
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AllocSize = ((pFcb->entry.FileSize + DeviceExt->BytesPerCluster - 1) /
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DeviceExt->BytesPerCluster) *
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DeviceExt->BytesPerCluster;
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pInfo->AllocationSize.LowPart= AllocSize;
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pInfo->AllocationSize.HighPart= (AllocSize >>32);
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pInfo->FileAttributes=pFcb->entry.Attrib;
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// pInfo->EaSize=;
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return STATUS_SUCCESS;
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}
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NTSTATUS FsdGetFileBothInformation(PFCB pFcb,
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PDEVICE_EXTENSION DeviceExt,
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PFILE_BOTH_DIRECTORY_INFORMATION pInfo,ULONG BufferLength)
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{
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short i;
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unsigned long long AllocSize;
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ULONG Length;
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Length=vfat_wstrlen(pFcb->ObjectName);
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if( (sizeof(FILE_BOTH_DIRECTORY_INFORMATION)+Length) >BufferLength)
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return STATUS_BUFFER_OVERFLOW;
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pInfo->FileNameLength=Length;
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pInfo->NextEntryOffset=DWORD_ROUND_UP(sizeof(FILE_BOTH_DIRECTORY_INFORMATION)+Length);
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DPRINT("sizeof %d,Length %d, BufLength %d, Next %d\n"
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,sizeof(FILE_BOTH_DIRECTORY_INFORMATION),Length,BufferLength
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,pInfo->NextEntryOffset);
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memcpy(pInfo->FileName,pFcb->ObjectName
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,sizeof(WCHAR)*(pInfo->FileNameLength));
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// pInfo->FileIndex=;
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DosDateTimeToFileTime(pFcb->entry.CreationDate,pFcb->entry.CreationTime
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,&pInfo->CreationTime);
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DosDateTimeToFileTime(pFcb->entry.AccessDate,0
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,&pInfo->LastAccessTime);
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DosDateTimeToFileTime(pFcb->entry.UpdateDate,pFcb->entry.UpdateTime
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,&pInfo->LastWriteTime);
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DosDateTimeToFileTime(pFcb->entry.UpdateDate,pFcb->entry.UpdateTime
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,&pInfo->ChangeTime);
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pInfo->EndOfFile=RtlConvertUlongToLargeInteger(pFcb->entry.FileSize);
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/* Make allocsize a rounded up multiple of BytesPerCluster */
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AllocSize = ((pFcb->entry.FileSize + DeviceExt->BytesPerCluster - 1) /
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DeviceExt->BytesPerCluster) *
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DeviceExt->BytesPerCluster;
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pInfo->AllocationSize.LowPart= AllocSize;
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pInfo->AllocationSize.HighPart= AllocSize >>32;
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pInfo->FileAttributes=pFcb->entry.Attrib;
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// pInfo->EaSize=;
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for (i=0;i<8 && (pFcb->entry.Filename[i]!=' ') ;i++)
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pInfo->ShortName[i]=pFcb->entry.Filename[i];
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pInfo->ShortNameLength=i;
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pInfo->ShortName[i]='.';
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for (i=0 ;i<3 && (pFcb->entry.Ext[i]!=' ') ;i++)
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pInfo->ShortName[i+1+pInfo->ShortNameLength]=pFcb->entry.Ext[i];
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if(i) pInfo->ShortNameLength += (i+1);
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return STATUS_SUCCESS;
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}
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NTSTATUS DoQuery(PDEVICE_OBJECT DeviceObject, PIRP Irp,PIO_STACK_LOCATION Stack)
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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 long FileIndex = 0;
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unsigned char *Buffer = NULL;
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PFILE_NAMES_INFORMATION Buffer0 = NULL;
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PFILE_OBJECT pFileObject = NULL;
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PFCB pFcb;
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FCB tmpFcb;
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PDEVICE_EXTENSION DeviceExt;
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WCHAR star[5],*pCharPattern;
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unsigned long OldEntry,OldSector;
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DeviceExt = DeviceObject->DeviceExtension;
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// Obtain the callers parameters
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BufferLength = Stack->Parameters.QueryDirectory.BufferLength;
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pSearchPattern = Stack->Parameters.QueryDirectory.FileName;
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FileInformationClass = Stack->Parameters.QueryDirectory.FileInformationClass;
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FileIndex = Stack->Parameters.QueryDirectory.FileIndex;
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pFileObject = Stack->FileObject;
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pFcb=(PFCB)(pFileObject->FsContext);
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if(Stack->Parameters.QueryDirectory.RestartScan)
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{
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pFcb->StartEntry=pFcb->StartSector=0;
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}
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// determine Buffer for result :
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if (Irp->MdlAddress)
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Buffer = MmGetSystemAddressForMdl(Irp->MdlAddress);
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else
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Buffer = Irp->UserBuffer;
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if (pSearchPattern==NULL)
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{
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star[0]='*';
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star[1]=0;
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pCharPattern=star;
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}
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else pCharPattern=pSearchPattern->Buffer;
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while(RC==STATUS_SUCCESS && BufferLength >0)
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{
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OldSector=pFcb->StartSector;
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OldEntry=pFcb->StartEntry;
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if(OldSector)pFcb->StartEntry++;
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RC=FindFile(DeviceExt,&tmpFcb,pFcb,pCharPattern,&pFcb->StartSector,&pFcb->StartEntry);
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DPRINT("Found %w\n",tmpFcb.ObjectName);
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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=FsdGetFileNameInformation(&tmpFcb
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,(PFILE_NAMES_INFORMATION)Buffer,BufferLength);
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break;
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case FileDirectoryInformation:
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RC= FsdGetFileDirectoryInformation(&tmpFcb
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,DeviceExt,(PFILE_DIRECTORY_INFORMATION)Buffer,BufferLength);
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break;
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case FileFullDirectoryInformation :
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RC= FsdGetFileFullDirectoryInformation(&tmpFcb
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,DeviceExt,(PFILE_FULL_DIRECTORY_INFORMATION)Buffer,BufferLength);
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break;
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case FileBothDirectoryInformation :
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RC=FsdGetFileBothInformation(&tmpFcb
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,DeviceExt,(PFILE_BOTH_DIRECTORY_INFORMATION)Buffer,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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}
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else
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{
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if(Buffer0) Buffer0->NextEntryOffset=0;
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break;
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}
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if(RC==STATUS_BUFFER_OVERFLOW)
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{
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if(Buffer0) Buffer0->NextEntryOffset=0;
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pFcb->StartSector=OldSector;
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pFcb->StartEntry=OldEntry;
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break;
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}
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Buffer0=(PFILE_NAMES_INFORMATION)Buffer;
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Buffer0->FileIndex=FileIndex++;
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if(Stack->Parameters.QueryDirectory.ReturnSingleEntry) break;
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BufferLength -= Buffer0->NextEntryOffset;
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Buffer += Buffer0->NextEntryOffset;
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}
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if(Buffer0) Buffer0->NextEntryOffset=0;
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if(FileIndex>0) return STATUS_SUCCESS;
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return RC;
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}
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NTSTATUS FsdDirectoryControl(PDEVICE_OBJECT DeviceObject, PIRP Irp)
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/*
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* FUNCTION: directory control : read/write directory informations
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*/
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{
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NTSTATUS RC = STATUS_SUCCESS;
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PFILE_OBJECT FileObject = NULL;
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PIO_STACK_LOCATION Stack;
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Stack = IoGetCurrentIrpStackLocation(Irp);
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CHECKPOINT;
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FileObject = Stack->FileObject;
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switch (Stack->MinorFunction)
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{
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case IRP_MN_QUERY_DIRECTORY:
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RC=DoQuery(DeviceObject,Irp,Stack);
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break;
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case IRP_MN_NOTIFY_CHANGE_DIRECTORY:
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DPRINT(" vfat, dir : change\n");
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break;
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default:
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// error
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DbgPrint("unexpected minor function %x in VFAT driver\n",Stack->MinorFunction);
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RC = STATUS_INVALID_DEVICE_REQUEST;
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break;
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}
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Irp->IoStatus.Status = RC;
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Irp->IoStatus.Information = 0;
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IoCompleteRequest(Irp, IO_NO_INCREMENT);
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return RC;
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}
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