dll/win32/kernel32/file/lfile.c

   1 /* $Id$
   2  *
   3  * COPYRIGHT:       See COPYING in the top level directory
   4  * PROJECT:         ReactOS system libraries
   5  * FILE:            lib/kernel32/file/lfile.c
   6  * PURPOSE:         Find functions
   7  * PROGRAMMER:      Ariadne ( ariadne@xs4all.nl)
   8  * UPDATE HISTORY:
   9  *                  Created 01/11/98
  10  */
  11
  12 #include <k32.h>
  13 #include <wine/debug.h>
  14
  15 WINE_DEFAULT_DEBUG_CHANNEL(kernel32file);
  16
  17 /*
  18  * @implemented
  19  */
  20 long
  21 WINAPI
  22 _hread(HFILE hFile, LPVOID lpBuffer, long lBytes)
  23 {
  24     DWORD NumberOfBytesRead;
  25
  26     if (!ReadFile(LongToHandle(hFile),
  27                   lpBuffer,
  28                   (DWORD) lBytes,
  29                   &NumberOfBytesRead,
  30                   NULL))
  31     {
  32         return HFILE_ERROR;
  33     }
  34     return NumberOfBytesRead;
  35 }
  36
  37
  38 /*
  39  * @implemented
  40  */
  41 long
  42 WINAPI
  43 _hwrite(HFILE hFile, LPCSTR lpBuffer, long lBytes)
  44 {
  45     DWORD NumberOfBytesWritten;
  46
  47     if (lBytes == 0)
  48     {
  49         if (!SetEndOfFile((HANDLE) hFile))
  50         {
  51             return HFILE_ERROR;
  52         }
  53         return 0;
  54     }
  55     if (!WriteFile(LongToHandle(hFile),
  56                    (LPVOID) lpBuffer,
  57                    (DWORD) lBytes,
  58                    &NumberOfBytesWritten,
  59                    NULL))
  60     {
  61         return HFILE_ERROR;
  62     }
  63     return NumberOfBytesWritten;
  64 }
  65
  66
  67 /*
  68  * @implemented
  69  */
  70 HFILE
  71 WINAPI
  72 _lopen(LPCSTR lpPathName, int iReadWrite)
  73 {
  74     DWORD dwAccess, dwSharing, dwCreation;
  75
  76     if (iReadWrite & OF_CREATE)
  77     {
  78         dwCreation = CREATE_ALWAYS;
  79         dwAccess = GENERIC_READ | GENERIC_WRITE;
  80     }
  81     else
  82     {
  83         dwCreation = OPEN_EXISTING;
  84         switch(iReadWrite & 0x03)
  85         {
  86             case OF_READ:      dwAccess = GENERIC_READ; break;
  87             case OF_WRITE:     dwAccess = GENERIC_WRITE; break;
  88             case OF_READWRITE: dwAccess = GENERIC_READ | GENERIC_WRITE; break;
  89             default:           dwAccess = 0; break;
  90         }
  91     }
  92
  93     switch(iReadWrite & 0x70)
  94     {
  95         case OF_SHARE_EXCLUSIVE:  dwSharing = 0; break;
  96         case OF_SHARE_DENY_WRITE: dwSharing = FILE_SHARE_READ; break;
  97         case OF_SHARE_DENY_READ:  dwSharing = FILE_SHARE_WRITE; break;
  98         case OF_SHARE_DENY_NONE:
  99         case OF_SHARE_COMPAT:
 100         default:                  dwSharing = FILE_SHARE_READ | FILE_SHARE_WRITE; break;
 101     }
 102
 103     return (HFILE) CreateFileA(lpPathName,
 104                                dwAccess,
 105                                dwSharing,
 106                                NULL,
 107                                dwCreation,
 108                                FILE_ATTRIBUTE_NORMAL,
 109                                NULL);
 110 }
 111
 112
 113 /*
 114  * @implemented
 115  */
 116 HFILE
 117 WINAPI
 118 _lcreat(LPCSTR lpPathName, int iAttribute)
 119 {
 120     HANDLE hFile;
 121
 122     iAttribute &= FILE_ATTRIBUTE_READONLY | FILE_ATTRIBUTE_HIDDEN | FILE_ATTRIBUTE_SYSTEM;
 123     hFile = CreateFileA(lpPathName,
 124                         GENERIC_READ | GENERIC_WRITE,
 125                         (FILE_SHARE_READ | FILE_SHARE_WRITE),
 126                         NULL,
 127                         CREATE_ALWAYS,
 128                         iAttribute,
 129                         NULL);
 130
 131     return HandleToLong(hFile);
 132 }
 133
 134
 135 /*
 136  * @implemented
 137  */
 138 int
 139 WINAPI
 140 _lclose(HFILE hFile)
 141 {
 142     return CloseHandle(LongToHandle(hFile)) ? 0 : HFILE_ERROR;
 143 }
 144
 145
 146 /*
 147  * @implemented
 148  */
 149 LONG
 150 WINAPI
 151 _llseek(HFILE hFile, LONG lOffset, int iOrigin)
 152 {
 153     return SetFilePointer(LongToHandle(hFile),
 154                           lOffset,
 155                           NULL,
 156                           (DWORD) iOrigin);
 157 }
 158
 159 /* EOF */