os2/lib/doscalls/file/openclose.cpp

   1 /* $Id: openclose.cpp,v 1.1 2002/07/23 13:00:11 robertk Exp $
   2 */
   3 /*
   4  *
   5  * COPYRIGHT:        See COPYING in the top level directory
   6  * PROJECT:          ReactOS OS/2 sub system
   7  * FILE:             dll/doscalls.c
   8  * PURPOSE:          Kernelservices for OS/2 apps
   9  * PROGRAMMER:       Robert K. nonvolatil@yahoo.de
  10  * REVISION HISTORY:
  11  *    13-03-2002  Created
  12  */
  13
  14
  15 #define INCL_DOSFILEMGR
  16 #include "../../../include/os2.h"
  17 #include <ddk/ntddk.h>
  18
  19
  20
  21 APIRET STDCALL  Dos32Open(PSZ    pszFileName,  PHFILE pHf,
  22                             PULONG pulAction,  ULONG  cbFile,
  23                             ULONG  ulAttribute,  ULONG  fsOpenFlags,
  24                             ULONG  fsOpenMode,  PVOID reserved )  //ULONGPEAOP2 peaop2)
  25 {
  26 /*      NTAPI
  27 ZwCreateFile(
  28 OUT PHANDLE FileHandle,
  29 IN ACCESS_MASK DesiredAccess,
  30 IN POBJECT_ATTRIBUTES ObjectAttributes,
  31 OUT PIO_STATUS_BLOCK IoStatusBlock,
  32 IN PLARGE_INTEGER AllocationSize OPTIONAL,
  33 IN ULONG FileAttributes,
  34 IN ULONG ShareAccess,
  35 IN ULONG CreateDisposition,
  36 IN ULONG CreateOptions,
  37 IN PVOID EaBuffer OPTIONAL,
  38 IN ULONG EaLength
  39 );*/
  40
  41
  42
  43            OBJECT_ATTRIBUTES ObjectAttributes;
  44    IO_STATUS_BLOCK IoStatusBlock;
  45    UNICODE_STRING NtPathU;
  46    HANDLE FileHandle;
  47    NTSTATUS Status;
  48    ULONG Flags = 0;
  49
  50    switch (dwCreationDisposition)
  51      {
  52       case CREATE_NEW:
  53         dwCreationDisposition = FILE_CREATE;
  54         break;
  55
  56       case CREATE_ALWAYS:
  57         dwCreationDisposition = FILE_OVERWRITE_IF;
  58         break;
  59
  60       case OPEN_EXISTING:
  61         dwCreationDisposition = FILE_OPEN;
  62         break;
  63
  64       case OPEN_ALWAYS:
  65         dwCreationDisposition = OPEN_ALWAYS;
  66         break;
  67
  68       case TRUNCATE_EXISTING:
  69         dwCreationDisposition = FILE_OVERWRITE;
  70      }
  71
  72    DPRINT("CreateFileW(lpFileName %S)\n",lpFileName);
  73
  74    if (dwDesiredAccess & GENERIC_READ)
  75      dwDesiredAccess |= FILE_GENERIC_READ;
  76
  77    if (dwDesiredAccess & GENERIC_WRITE)
  78      dwDesiredAccess |= FILE_GENERIC_WRITE;
  79
  80    if (!(dwFlagsAndAttributes & FILE_FLAG_OVERLAPPED))
  81      {
  82         Flags |= FILE_SYNCHRONOUS_IO_ALERT;
  83      }
  84
  85    if (!RtlDosPathNameToNtPathName_U ((LPWSTR)lpFileName,
  86                                       &NtPathU,
  87                                       NULL,
  88                                       NULL))
  89      return INVALID_HANDLE_VALUE;
  90
  91    DPRINT("NtPathU \'%S\'\n", NtPathU.Buffer);
  92
  93    ObjectAttributes.Length = sizeof(OBJECT_ATTRIBUTES);
  94    ObjectAttributes.RootDirectory = NULL;
  95    ObjectAttributes.ObjectName = &NtPathU;
  96    ObjectAttributes.Attributes = OBJ_CASE_INSENSITIVE;
  97    ObjectAttributes.SecurityDescriptor = NULL;
  98    ObjectAttributes.SecurityQualityOfService = NULL;
  99
 100    Status = NtCreateFile (&FileHandle,
 101                           dwDesiredAccess,
 102                           &ObjectAttributes,
 103                           &IoStatusBlock,
 104                           NULL,
 105                           dwFlagsAndAttributes,
 106                           dwShareMode,
 107                           dwCreationDisposition,
 108                           Flags,
 109                           NULL,
 110                           0);
 111    if (!NT_SUCCESS(Status))
 112      {
 113         SetLastErrorByStatus (Status);
 114         return INVALID_HANDLE_VALUE;
 115      }
 116
 117    return FileHandle;
 118
 119         return 0;
 120 }
 121
 122
 123 /* close a Handle. seems finished */
 124 APIRET STDCALL  Dos32Close(HFILE hFile)
 125 {
 126         NTSTATUS   nErrCode;
 127         nErrCode = NtClose( (HANDLE)hFile );
 128         switch( nErrCode )
 129         {
 130         case STATUS_SUCCESS:
 131                 return NO_ERROR;
 132         case STATUS_INVALID_HANDLE:
 133                 return ERROR_INVALID_HANDLE;
 134         case STATUS_HANDLE_NOT_CLOSABLE:
 135                 return ERROR_FILE_NOT_FOUND;
 136         }
 137         return nErrCode;
 138 }
 139
 140
 141
 142
 143 APIRET STDCALL  Dos32Read(HFILE hFile, PVOID pBuffer,
 144                             ULONG cbRead, PULONG pcbActual)
 145 {
 146         NTSTATUS        nErrCode;
 147         IO_STATUS_BLOCK isbStatus;
 148         // read data from file
 149         nErrCode = NtReadFile( (HANDLE)hFile,   NULL,   NULL,   NULL,
 150                                                         &isbStatus,             pBuffer,        cbRead,
 151                                                         NULL,           NULL    );
 152         // contains the # bytes actually read.
 153         *pcbActual = isbStatus.Information;
 154         switch(nErrCode)
 155         {
 156         case STATUS_INVALID_HANDLE:
 157                 return ERROR_INVALID_HANDLE;
 158                 // FIXME: complete this
 159         }
 160         return NO_ERROR;
 161 }
 162
 163 /* Generic write to a stream given by hFile */
 164 APIRET STDCALL  Dos32Write(HFILE hFile, PVOID pBuffer,
 165                              ULONG cbWrite, PULONG pcbActual)
 166 {
 167         NTSTATUS        nErrCode;
 168         IO_STATUS_BLOCK StatusBlk;
 169         nErrCode = NtWriteFile( (HANDLE)hFile, NULL, NULL, NULL,
 170                                                         &StatusBlk, pBuffer, cbWrite, 0, NULL );
 171         *pcbActual = StatusBlk.Information;
 172         // do an errorcode translation   FIXME: correct
 173         switch(nErrCode)
 174         {
 175         case STATUS_SUCCESS:
 176         case STATUS_PENDING:
 177         case STATUS_ACCESS_DENIED:
 178         case STATUS_INVALID_HANDLE:
 179         case STATUS_FILE_LOCK_CONFLICT:
 180                 return 0;
 181         }
 182         return 0;
 183 }
 184
 185
 186