lib/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
  14
  15 long
  16 STDCALL
  17 _hread(
  18         HFILE   hFile,
  19         LPVOID  lpBuffer,
  20         long    lBytes
  21         )
  22 {
  23         DWORD   NumberOfBytesRead;
  24
  25         if (ReadFile(
  26                 (HANDLE) hFile,
  27                 (LPVOID) lpBuffer,
  28                 (DWORD) lBytes,
  29                 & NumberOfBytesRead,
  30                 NULL
  31                 ) == FALSE)
  32         {
  33                 return -1;
  34         }
  35         return NumberOfBytesRead;
  36 }
  37
  38
  39 /*
  40 //19990828.EA: aliased in DEF
  41 UINT
  42 STDCALL
  43 _lread (
  44         HFILE   fd,
  45         LPVOID  buffer,
  46         UINT    count
  47         )
  48 {
  49         return _hread(
  50                  fd,
  51                  buffer,
  52                  count
  53                  );
  54 }
  55 */
  56
  57
  58 long
  59 STDCALL
  60 _hwrite (
  61         HFILE   hFile,
  62         LPCSTR  lpBuffer,
  63         long    lBytes
  64         )
  65 {
  66         DWORD   NumberOfBytesWritten;
  67
  68         if (lBytes == 0)
  69         {
  70                 if ( SetEndOfFile((HANDLE) hFile ) == FALSE )
  71                 {
  72                         return -1;
  73                 }
  74                 return 0;
  75         }
  76         if ( WriteFile(
  77                 (HANDLE) hFile,
  78                 (LPVOID) lpBuffer,
  79                 (DWORD) lBytes,
  80                 & NumberOfBytesWritten,
  81                 NULL
  82                 ) == FALSE )
  83         {
  84                 return -1;
  85         }
  86         return NumberOfBytesWritten;
  87 }
  88
  89
  90 /*
  91 //19990828.EA: aliased in DEF
  92
  93 UINT
  94 STDCALL
  95 _lwrite(
  96         HFILE   hFile,
  97         LPCSTR  lpBuffer,
  98         UINT    uBytes
  99         )
 100 {
 101         return _hwrite(hFile,lpBuffer,uBytes);
 102 }
 103 */
 104
 105
 106 HFILE
 107 STDCALL
 108 _lopen (
 109         LPCSTR  lpPathName,
 110         int     iReadWrite
 111         )
 112 {
 113         DWORD dwAccessMask = 0;
 114         DWORD dwShareMode = 0;
 115
 116         if ( (iReadWrite & OF_READWRITE ) == OF_READWRITE )
 117                 dwAccessMask = GENERIC_READ | GENERIC_WRITE;
 118         else if ( (iReadWrite & OF_READ ) == OF_READ )
 119                 dwAccessMask = GENERIC_READ;
 120         else if ( (iReadWrite & OF_WRITE ) == OF_WRITE )
 121                 dwAccessMask = GENERIC_WRITE;
 122
 123         if ((iReadWrite & OF_SHARE_COMPAT) == OF_SHARE_COMPAT )
 124                 dwShareMode = FILE_SHARE_WRITE | FILE_SHARE_READ | FILE_SHARE_DELETE;
 125         else if ((iReadWrite & OF_SHARE_DENY_NONE) == OF_SHARE_DENY_NONE)
 126                 dwShareMode = FILE_SHARE_WRITE | FILE_SHARE_READ | FILE_SHARE_DELETE;
 127         else if ((iReadWrite & OF_SHARE_DENY_READ) == OF_SHARE_DENY_READ)
 128                 dwShareMode = FILE_SHARE_WRITE | FILE_SHARE_DELETE;
 129         else if ((iReadWrite & OF_SHARE_DENY_WRITE) == OF_SHARE_DENY_WRITE )
 130                 dwShareMode = FILE_SHARE_READ | FILE_SHARE_DELETE;
 131         else if ((iReadWrite & OF_SHARE_EXCLUSIVE) == OF_SHARE_EXCLUSIVE)
 132                 dwShareMode = 0;
 133
 134         SetLastError (ERROR_SUCCESS);
 135         return (HFILE) CreateFileA(
 136                         lpPathName,
 137                         dwAccessMask,
 138                         dwShareMode,
 139                         NULL,
 140                         OPEN_EXISTING,
 141                         FILE_ATTRIBUTE_NORMAL,
 142                         NULL);
 143 }
 144
 145
 146 HFILE
 147 STDCALL
 148 _lcreat (
 149         LPCSTR  lpPathName,
 150         int     iAttribute
 151         )
 152 {
 153
 154         DWORD FileAttributes = 0;
 155
 156         if (  iAttribute == 0 )
 157                 FileAttributes |= FILE_ATTRIBUTE_NORMAL;
 158         else if (  iAttribute == 1 )
 159                 FileAttributes |= FILE_ATTRIBUTE_READONLY;
 160         else if (  iAttribute == 2 )
 161                 FileAttributes |= FILE_ATTRIBUTE_HIDDEN;
 162         else if (  iAttribute == 4 )
 163                 FileAttributes |= FILE_ATTRIBUTE_SYSTEM;
 164
 165         return (HFILE) CreateFileA(
 166                         lpPathName,
 167                         GENERIC_ALL,
 168                         (FILE_SHARE_READ | FILE_SHARE_WRITE),
 169                         NULL,
 170                         CREATE_ALWAYS,
 171                         iAttribute,
 172                         NULL);
 173 }
 174
 175
 176 int
 177 STDCALL
 178 _lclose (
 179         HFILE   hFile
 180         )
 181 {
 182         if (CloseHandle ((HANDLE)hFile))
 183         {
 184                 return 0;
 185         }
 186         return -1;
 187 }
 188
 189
 190 LONG
 191 STDCALL
 192 _llseek(
 193         HFILE   hFile,
 194         LONG    lOffset,
 195         int     iOrigin
 196         )
 197 {
 198         return SetFilePointer (
 199                         (HANDLE) hFile,
 200                         lOffset,
 201                         NULL,
 202                         (DWORD) iOrigin);
 203 }
 204
 205 /* EOF */