reactos/lib/kernel32/file/lfile.c

   1 /*
   2  * COPYRIGHT:       See COPYING in the top level directory
   3  * PROJECT:         ReactOS system libraries
   4  * FILE:            lib/kernel32/file/lfile.c
   5  * PURPOSE:         Find functions
   6  * PROGRAMMER:      Ariadne ( ariadne@xs4all.nl)
   7  * UPDATE HISTORY:
   8  *                  Created 01/11/98
   9  */
  10
  11 #undef WIN32_LEAN_AND_MEAN
  12 #include <windows.h>
  13 #include <string.h>
  14 #include <wchar.h>
  15
  16
  17
  18
  19 long _hread(
  20     HFILE  hFile,
  21     LPVOID  lpBuffer,
  22     long  lBytes
  23    )
  24 {
  25         DWORD  NumberOfBytesRead;
  26         if ( ReadFile((HANDLE)hFile,(LPVOID)lpBuffer,(DWORD)lBytes,&NumberOfBytesRead, NULL) == FALSE )
  27                 return -1;
  28         else
  29                 return NumberOfBytesRead;
  30
  31 }
  32
  33 UINT STDCALL _lread(HFILE fd,LPVOID buffer,UINT count)
  34 {
  35     return _hread(fd,buffer, count);
  36 }
  37
  38
  39 long _hwrite(
  40     HFILE  hFile,
  41     LPCSTR  lpBuffer,
  42     long  lBytes
  43    )
  44 {
  45
  46         DWORD  NumberOfBytesWritten;
  47         if ( lBytes == 0 ) {
  48                 if ( SetEndOfFile((HANDLE) hFile ) == FALSE )
  49                         return -1;
  50                 else
  51                         return 0;
  52         }
  53         if ( WriteFile((HANDLE)hFile,(LPVOID)lpBuffer,(DWORD)lBytes, &NumberOfBytesWritten,NULL) == FALSE )
  54                 return -1;
  55         else
  56                 return NumberOfBytesWritten;
  57
  58 }
  59
  60 UINT
  61 STDCALL
  62 _lwrite(
  63         HFILE hFile,
  64         LPCSTR lpBuffer,
  65         UINT uBytes
  66         )
  67 {
  68         return _hwrite(hFile,lpBuffer,uBytes);
  69 }
  70
  71
  72
  73
  74
  75 HFILE _lopen( LPCSTR  lpPathName, int  iReadWrite        )
  76 {
  77
  78
  79
  80         DWORD dwAccessMask = 0;
  81         DWORD dwShareMode = 0;
  82
  83         if ( (iReadWrite & OF_READWRITE ) == OF_READWRITE )
  84                 dwAccessMask = GENERIC_READ | GENERIC_WRITE;
  85         else if ( (iReadWrite & OF_READ ) == OF_READ )
  86                 dwAccessMask = GENERIC_READ;
  87         else if ( (iReadWrite & OF_WRITE ) == OF_WRITE )
  88                 dwAccessMask = GENERIC_WRITE;
  89
  90
  91
  92
  93
  94 if ((iReadWrite & OF_SHARE_COMPAT) == OF_SHARE_COMPAT )
  95         dwShareMode = FILE_SHARE_WRITE | FILE_SHARE_READ | FILE_SHARE_DELETE;
  96 else if ((iReadWrite & OF_SHARE_DENY_NONE) == OF_SHARE_DENY_NONE)
  97         dwShareMode = FILE_SHARE_WRITE | FILE_SHARE_READ | FILE_SHARE_DELETE;
  98 else if ((iReadWrite & OF_SHARE_DENY_READ) == OF_SHARE_DENY_READ)
  99         dwShareMode = FILE_SHARE_WRITE | FILE_SHARE_DELETE;
 100 else if ((iReadWrite & OF_SHARE_DENY_WRITE) == OF_SHARE_DENY_WRITE )
 101         dwShareMode = FILE_SHARE_READ | FILE_SHARE_DELETE;
 102 else if ((iReadWrite & OF_SHARE_EXCLUSIVE) == OF_SHARE_EXCLUSIVE)
 103         dwShareMode = 0;
 104
 105
 106
 107         SetLastError(0);
 108         return (HFILE) CreateFileA( lpPathName,dwAccessMask,dwShareMode,
 109                         NULL,OPEN_EXISTING,FILE_ATTRIBUTE_NORMAL,NULL);
 110
 111 }
 112
 113
 114 HFILE _lcreat(  LPCSTR  lpPathName,      int  iAttribute         )
 115 {
 116
 117         DWORD FileAttributes = 0;
 118
 119         if (  iAttribute == 1 )
 120                 FileAttributes |= FILE_ATTRIBUTE_NORMAL;
 121         else if (  iAttribute == 2 )
 122                 FileAttributes |= FILE_ATTRIBUTE_READONLY;
 123         else if (  iAttribute == 3 )
 124                 FileAttributes |= FILE_ATTRIBUTE_HIDDEN;
 125         else if (  iAttribute == 4 )
 126                 FileAttributes |= FILE_ATTRIBUTE_SYSTEM;
 127
 128         return(HFILE) CreateFileA( lpPathName,GENERIC_ALL,FILE_SHARE_READ|FILE_SHARE_WRITE,
 129                         NULL,CREATE_ALWAYS,iAttribute ,NULL);
 130 }
 131
 132
 133 int _lclose(
 134     HFILE  hFile
 135    )
 136 {
 137         if ( CloseHandle((HANDLE)hFile) )
 138                 return 0;
 139         else
 140                 return -1;
 141 }
 142
 143 LONG _llseek(
 144     HFILE  hFile,
 145     LONG  lOffset,
 146     int  iOrigin
 147    )
 148 {
 149         return  SetFilePointer((HANDLE)  hFile,  lOffset, NULL,(DWORD)iOrigin );
 150 }
 151
 152