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https://github.com/reactos/reactos.git
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Implemented file access/sharing check functions
svn path=/trunk/; revision=1914
This commit is contained in:
Eric Kohl
parent
ca61cc2444
commit
0f9dfab704
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@ -1,4 +1,4 @@
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/* $Id: iotypes.h,v 1.28 2001/05/01 23:08:17 chorns Exp $
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/* $Id: iotypes.h,v 1.29 2001/05/24 22:18:16 ekohl Exp $
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*
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*/
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@ -42,17 +42,21 @@ enum
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typedef enum _CREATE_FILE_TYPE
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{
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CreateFileTypeNone,
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CreateFileTypeNamedPipe,
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CreateFileTypeMailslot
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CreateFileTypeNone,
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CreateFileTypeNamedPipe,
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CreateFileTypeMailslot
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} CREATE_FILE_TYPE;
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/*
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* FIXME: Definition needed
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*/
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typedef struct _SHARE_ACCESS
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{
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ULONG OpenCount;
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ULONG Readers;
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ULONG Writers;
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ULONG Deleters;
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ULONG SharedRead;
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ULONG SharedWrite;
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ULONG SharedDelete;
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} SHARE_ACCESS, *PSHARE_ACCESS;
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/* FUNCTION TYPES ************************************************************/
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@ -13,7 +13,8 @@
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#define ANYSIZE_ARRAY (1)
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#define SYNCHRONIZE (0x100000L)
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#define DELETE (0x00010000L)
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#define SYNCHRONIZE (0x00100000L)
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#define DUPLICATE_CLOSE_SOURCE (1)
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#define DUPLICATE_SAME_ACCESS (2)
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@ -1,4 +1,4 @@
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/* $Id: share.c,v 1.2 2000/03/26 19:38:26 ea Exp $
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/* $Id: share.c,v 1.3 2001/05/24 22:19:25 ekohl Exp $
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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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@ -17,89 +17,284 @@
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/* FUNCTIONS *****************************************************************/
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VOID
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STDCALL
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IoUpdateShareAccess(PFILE_OBJECT FileObject, PSHARE_ACCESS ShareAccess)
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VOID STDCALL
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IoUpdateShareAccess(PFILE_OBJECT FileObject,
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PSHARE_ACCESS ShareAccess)
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{
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UNIMPLEMENTED;
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if ((FileObject->ReadAccess == FALSE) &&
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(FileObject->WriteAccess == FALSE) &&
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(FileObject->DeleteAccess == FALSE))
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{
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return;
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}
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ShareAccess->OpenCount++;
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if (FileObject->ReadAccess == TRUE)
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{
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ShareAccess->Readers++;
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}
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if (FileObject->WriteAccess == TRUE)
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{
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ShareAccess->Writers++;
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}
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if (FileObject->DeleteAccess == TRUE)
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{
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ShareAccess->Deleters++;
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}
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if (FileObject->SharedRead == TRUE)
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{
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ShareAccess->SharedRead++;
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}
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if (FileObject->SharedWrite == TRUE)
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{
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ShareAccess->SharedWrite++;
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}
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if (FileObject->SharedDelete == TRUE)
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{
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ShareAccess->SharedDelete++;
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}
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}
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VOID
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STDCALL
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IoCheckDesiredAccess (
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DWORD Unknown0,
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DWORD Unknown1
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)
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{
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UNIMPLEMENTED;
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}
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NTSTATUS
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STDCALL
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IoCheckEaBufferValidity (
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DWORD Unknown0,
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DWORD Unknown1,
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DWORD Unknown2
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)
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{
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UNIMPLEMENTED;
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return (STATUS_NOT_IMPLEMENTED);
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}
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NTSTATUS
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STDCALL
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IoCheckFunctionAccess (
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DWORD Unknown0,
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DWORD Unknown1,
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DWORD Unknown2,
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DWORD Unknown3,
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DWORD Unknown4,
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DWORD Unknown5
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)
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{
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UNIMPLEMENTED;
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return (STATUS_NOT_IMPLEMENTED);
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}
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NTSTATUS
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STDCALL
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NTSTATUS STDCALL
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IoCheckShareAccess(ACCESS_MASK DesiredAccess,
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ULONG DesiredShareAccess,
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PFILE_OBJECT FileObject,
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PSHARE_ACCESS ShareAccess,
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BOOLEAN Update)
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ULONG DesiredShareAccess,
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PFILE_OBJECT FileObject,
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PSHARE_ACCESS ShareAccess,
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BOOLEAN Update)
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{
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UNIMPLEMENTED;
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return (STATUS_NOT_IMPLEMENTED);
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BOOLEAN ReadAccess;
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BOOLEAN WriteAccess;
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BOOLEAN DeleteAccess;
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BOOLEAN SharedRead;
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BOOLEAN SharedWrite;
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BOOLEAN SharedDelete;
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ReadAccess = (DesiredAccess & (FILE_READ_DATA | FILE_EXECUTE));
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WriteAccess = (DesiredAccess & (FILE_READ_DATA | FILE_APPEND_DATA));
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ReadAccess = (DesiredAccess & DELETE);
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FileObject->ReadAccess = ReadAccess;
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FileObject->WriteAccess = WriteAccess;
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FileObject->DeleteAccess = DeleteAccess;
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if (!ReadAccess && !WriteAccess && !DeleteAccess)
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{
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return (STATUS_SUCCESS);
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}
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SharedRead = (DesiredShareAccess & FILE_SHARE_READ);
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SharedWrite = (DesiredShareAccess & FILE_SHARE_WRITE);
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SharedDelete = (DesiredShareAccess & FILE_SHARE_DELETE);
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FileObject->SharedRead = SharedRead;
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FileObject->SharedWrite = SharedWrite;
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FileObject->SharedDelete = SharedDelete;
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if (ReadAccess)
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{
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if (ShareAccess->SharedRead < ShareAccess->OpenCount)
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return (STATUS_SHARING_VIOLATION);
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}
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if (WriteAccess)
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{
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if (ShareAccess->SharedWrite < ShareAccess->OpenCount)
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return (STATUS_SHARING_VIOLATION);
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}
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if (DeleteAccess)
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{
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if (ShareAccess->SharedDelete < ShareAccess->OpenCount)
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return (STATUS_SHARING_VIOLATION);
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}
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if (ShareAccess->Readers != 0)
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{
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if (SharedRead == FALSE)
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return (STATUS_SHARING_VIOLATION);
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}
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if (ShareAccess->Writers != 0)
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{
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if (SharedWrite == FALSE)
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return (STATUS_SHARING_VIOLATION);
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}
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if (ShareAccess->Deleters != 0)
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{
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if (SharedDelete == FALSE)
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return (STATUS_SHARING_VIOLATION);
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}
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if (Update == TRUE)
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{
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ShareAccess->OpenCount++;
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if (ReadAccess == TRUE)
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ShareAccess->Readers++;
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if (WriteAccess == TRUE)
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ShareAccess->Writers++;
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if (DeleteAccess == TRUE)
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ShareAccess->Deleters++;
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if (SharedRead == TRUE)
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ShareAccess->SharedRead++;
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if (SharedWrite == TRUE)
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ShareAccess->SharedWrite++;
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if (SharedDelete == TRUE)
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ShareAccess->SharedDelete++;
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}
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return (STATUS_SUCCESS);
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}
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VOID
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STDCALL
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VOID STDCALL
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IoRemoveShareAccess(PFILE_OBJECT FileObject,
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PSHARE_ACCESS ShareAccess)
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PSHARE_ACCESS ShareAccess)
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{
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UNIMPLEMENTED;
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if ((FileObject->ReadAccess == FALSE) &&
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(FileObject->WriteAccess == FALSE) &&
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(FileObject->DeleteAccess == FALSE))
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{
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return;
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}
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ShareAccess->OpenCount--;
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if (FileObject->ReadAccess == TRUE)
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{
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ShareAccess->Readers--;
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}
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if (FileObject->WriteAccess == TRUE)
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{
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ShareAccess->Writers--;
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}
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if (FileObject->DeleteAccess == TRUE)
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{
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ShareAccess->Deleters--;
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}
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if (FileObject->SharedRead == TRUE)
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{
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ShareAccess->SharedRead--;
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}
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if (FileObject->SharedWrite == TRUE)
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{
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ShareAccess->SharedWrite--;
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}
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if (FileObject->SharedDelete == TRUE)
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{
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ShareAccess->SharedDelete--;
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}
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}
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VOID
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STDCALL
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VOID STDCALL
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IoSetShareAccess(ACCESS_MASK DesiredAccess,
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ULONG DesiredShareAccess,
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PFILE_OBJECT FileObject,
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PSHARE_ACCESS ShareAccess)
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ULONG DesiredShareAccess,
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PFILE_OBJECT FileObject,
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PSHARE_ACCESS ShareAccess)
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{
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BOOLEAN ReadAccess;
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BOOLEAN WriteAccess;
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BOOLEAN DeleteAccess;
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BOOLEAN SharedRead;
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BOOLEAN SharedWrite;
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BOOLEAN SharedDelete;
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ReadAccess = (DesiredAccess & (FILE_READ_DATA | FILE_EXECUTE));
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WriteAccess = (DesiredAccess & (FILE_READ_DATA | FILE_APPEND_DATA));
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ReadAccess = (DesiredAccess & DELETE);
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FileObject->ReadAccess = ReadAccess;
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FileObject->WriteAccess = WriteAccess;
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FileObject->DeleteAccess = DeleteAccess;
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if (!ReadAccess && !WriteAccess && !DeleteAccess)
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{
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FileObject->SharedRead = FALSE;
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FileObject->SharedWrite = FALSE;
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FileObject->SharedDelete = FALSE;
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ShareAccess->OpenCount = 0;
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ShareAccess->Readers = 0;
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ShareAccess->Writers = 0;
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ShareAccess->Deleters = 0;
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ShareAccess->SharedRead = 0;
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ShareAccess->SharedWrite = 0;
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ShareAccess->SharedDelete = 0;
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}
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else
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{
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SharedRead = (DesiredShareAccess & FILE_SHARE_READ);
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SharedWrite = (DesiredShareAccess & FILE_SHARE_WRITE);
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SharedDelete = (DesiredShareAccess & FILE_SHARE_DELETE);
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FileObject->SharedRead = SharedRead;
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FileObject->SharedWrite = SharedWrite;
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FileObject->SharedDelete = SharedDelete;
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ShareAccess->OpenCount = 1;
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ShareAccess->Readers = (ReadAccess) ? 1 : 0;
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ShareAccess->Writers = (WriteAccess) ? 1 : 0;
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ShareAccess->Deleters = (DeleteAccess) ? 1 : 0;
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ShareAccess->SharedRead = (SharedRead) ? 1 : 0;
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ShareAccess->SharedWrite = (SharedWrite) ? 1 : 0;
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ShareAccess->SharedDelete = (SharedDelete) ? 1 : 0;
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}
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}
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VOID STDCALL
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IoCheckDesiredAccess(DWORD Unknown0,
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DWORD Unknown1)
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{
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UNIMPLEMENTED;
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}
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NTSTATUS
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STDCALL
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NTSTATUS STDCALL
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IoCheckEaBufferValidity(DWORD Unknown0,
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DWORD Unknown1,
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DWORD Unknown2)
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{
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UNIMPLEMENTED;
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return (STATUS_NOT_IMPLEMENTED);
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}
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NTSTATUS STDCALL
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IoCheckFunctionAccess(DWORD Unknown0,
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DWORD Unknown1,
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DWORD Unknown2,
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DWORD Unknown3,
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DWORD Unknown4,
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DWORD Unknown5)
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{
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UNIMPLEMENTED;
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return (STATUS_NOT_IMPLEMENTED);
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}
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NTSTATUS STDCALL
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IoSetInformation (
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IN PFILE_OBJECT FileObject,
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IN FILE_INFORMATION_CLASS FileInformationClass,
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@ -112,8 +307,7 @@ IoSetInformation (
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}
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VOID
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STDCALL
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VOID STDCALL
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IoFastQueryNetworkAttributes (
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DWORD Unknown0,
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DWORD Unknown1,
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