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535 lines
17 KiB
C
535 lines
17 KiB
C
/*
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* File handling functions
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*
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* Copyright 1993 John Burton
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* Copyright 1996, 2004 Alexandre Julliard
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* Copyright 2008 Jeff Zaroyko
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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#include <stdarg.h>
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#include <stdio.h>
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#include <errno.h>
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#include "winerror.h"
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#include "ntstatus.h"
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#define WIN32_NO_STATUS
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#include "windef.h"
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#include "winbase.h"
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#include "winternl.h"
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#include "winioctl.h"
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#include "wincon.h"
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#include "ddk/ntddk.h"
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#include "kernel_private.h"
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#include "fileapi.h"
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#include "shlwapi.h"
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#include "wine/debug.h"
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WINE_DEFAULT_DEBUG_CHANNEL(file);
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/***********************************************************************
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* create_file_OF
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*
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* Wrapper for CreateFile that takes OF_* mode flags.
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*/
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static HANDLE create_file_OF( LPCSTR path, INT mode )
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{
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DWORD access, sharing, creation;
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if (mode & OF_CREATE)
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{
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creation = CREATE_ALWAYS;
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access = GENERIC_READ | GENERIC_WRITE;
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}
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else
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{
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creation = OPEN_EXISTING;
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switch(mode & 0x03)
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{
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case OF_READ: access = GENERIC_READ; break;
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case OF_WRITE: access = GENERIC_WRITE; break;
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case OF_READWRITE: access = GENERIC_READ | GENERIC_WRITE; break;
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default: access = 0; break;
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}
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}
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switch(mode & 0x70)
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{
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case OF_SHARE_EXCLUSIVE: sharing = 0; break;
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case OF_SHARE_DENY_WRITE: sharing = FILE_SHARE_READ; break;
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case OF_SHARE_DENY_READ: sharing = FILE_SHARE_WRITE; break;
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case OF_SHARE_DENY_NONE:
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case OF_SHARE_COMPAT:
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default: sharing = FILE_SHARE_READ | FILE_SHARE_WRITE; break;
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}
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return CreateFileA( path, access, sharing, NULL, creation, FILE_ATTRIBUTE_NORMAL, 0 );
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}
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/***********************************************************************
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* FILE_name_AtoW
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*
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* Convert a file name to Unicode, taking into account the OEM/Ansi API mode.
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*
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* If alloc is FALSE uses the TEB static buffer, so it can only be used when
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* there is no possibility for the function to do that twice, taking into
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* account any called function.
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*/
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WCHAR *FILE_name_AtoW( LPCSTR name, BOOL alloc )
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{
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ANSI_STRING str;
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UNICODE_STRING strW, *pstrW;
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NTSTATUS status;
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RtlInitAnsiString( &str, name );
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pstrW = alloc ? &strW : &NtCurrentTeb()->StaticUnicodeString;
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if (!AreFileApisANSI())
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status = RtlOemStringToUnicodeString( pstrW, &str, alloc );
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else
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status = RtlAnsiStringToUnicodeString( pstrW, &str, alloc );
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if (status == STATUS_SUCCESS) return pstrW->Buffer;
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if (status == STATUS_BUFFER_OVERFLOW)
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SetLastError( ERROR_FILENAME_EXCED_RANGE );
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else
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SetLastError( RtlNtStatusToDosError(status) );
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return NULL;
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}
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/***********************************************************************
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* FILE_name_WtoA
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*
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* Convert a file name back to OEM/Ansi. Returns number of bytes copied.
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*/
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DWORD FILE_name_WtoA( LPCWSTR src, INT srclen, LPSTR dest, INT destlen )
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{
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DWORD ret;
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if (srclen < 0) srclen = lstrlenW( src ) + 1;
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if (!destlen)
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{
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if (!AreFileApisANSI())
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{
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UNICODE_STRING strW;
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strW.Buffer = (WCHAR *)src;
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strW.Length = srclen * sizeof(WCHAR);
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ret = RtlUnicodeStringToOemSize( &strW ) - 1;
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}
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else
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RtlUnicodeToMultiByteSize( &ret, src, srclen * sizeof(WCHAR) );
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}
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else
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{
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if (!AreFileApisANSI())
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RtlUnicodeToOemN( dest, destlen, &ret, src, srclen * sizeof(WCHAR) );
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else
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RtlUnicodeToMultiByteN( dest, destlen, &ret, src, srclen * sizeof(WCHAR) );
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}
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return ret;
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}
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/***********************************************************************
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* _hread (KERNEL32.@)
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*/
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LONG WINAPI _hread( HFILE hFile, LPVOID buffer, LONG count)
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{
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return _lread( hFile, buffer, count );
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}
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/***********************************************************************
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* _hwrite (KERNEL32.@)
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*
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* experimentation yields that _lwrite:
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* o truncates the file at the current position with
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* a 0 len write
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* o returns 0 on a 0 length write
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* o works with console handles
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*
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*/
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LONG WINAPI _hwrite( HFILE handle, LPCSTR buffer, LONG count )
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{
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DWORD result;
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TRACE("%d %p %ld\n", handle, buffer, count );
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if (!count)
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{
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/* Expand or truncate at current position */
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if (!SetEndOfFile( LongToHandle(handle) )) return HFILE_ERROR;
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return 0;
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}
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if (!WriteFile( LongToHandle(handle), buffer, count, &result, NULL ))
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return HFILE_ERROR;
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return result;
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}
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/***********************************************************************
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* _lclose (KERNEL32.@)
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*/
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HFILE WINAPI _lclose( HFILE hFile )
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{
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TRACE("handle %d\n", hFile );
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return CloseHandle( LongToHandle(hFile) ) ? 0 : HFILE_ERROR;
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}
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/***********************************************************************
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* _lcreat (KERNEL32.@)
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*/
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HFILE WINAPI _lcreat( LPCSTR path, INT attr )
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{
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HANDLE hfile;
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/* Mask off all flags not explicitly allowed by the doc */
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attr &= FILE_ATTRIBUTE_READONLY | FILE_ATTRIBUTE_HIDDEN | FILE_ATTRIBUTE_SYSTEM;
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TRACE("%s %02x\n", path, attr );
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hfile = CreateFileA( path, GENERIC_READ | GENERIC_WRITE,
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FILE_SHARE_READ | FILE_SHARE_WRITE, NULL,
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CREATE_ALWAYS, attr, 0 );
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return HandleToLong(hfile);
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}
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/***********************************************************************
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* _lopen (KERNEL32.@)
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*/
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HFILE WINAPI _lopen( LPCSTR path, INT mode )
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{
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HANDLE hfile;
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TRACE("(%s,%04x)\n", debugstr_a(path), mode );
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hfile = create_file_OF( path, mode & ~OF_CREATE );
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return HandleToLong(hfile);
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}
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/***********************************************************************
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* _lread (KERNEL32.@)
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*/
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UINT WINAPI _lread( HFILE handle, LPVOID buffer, UINT count )
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{
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DWORD result;
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if (!ReadFile( LongToHandle(handle), buffer, count, &result, NULL ))
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return HFILE_ERROR;
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return result;
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}
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/***********************************************************************
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* _llseek (KERNEL32.@)
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*/
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LONG WINAPI _llseek( HFILE hFile, LONG lOffset, INT nOrigin )
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{
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return SetFilePointer( LongToHandle(hFile), lOffset, NULL, nOrigin );
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}
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/***********************************************************************
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* _lwrite (KERNEL32.@)
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*/
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UINT WINAPI _lwrite( HFILE hFile, LPCSTR buffer, UINT count )
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{
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return (UINT)_hwrite( hFile, buffer, (LONG)count );
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}
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/**************************************************************************
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* SetFileCompletionNotificationModes (KERNEL32.@)
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*/
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BOOL WINAPI SetFileCompletionNotificationModes( HANDLE file, UCHAR flags )
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{
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FILE_IO_COMPLETION_NOTIFICATION_INFORMATION info;
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IO_STATUS_BLOCK io;
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info.Flags = flags;
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return set_ntstatus( NtSetInformationFile( file, &io, &info, sizeof(info),
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FileIoCompletionNotificationInformation ));
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}
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/*************************************************************************
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* SetHandleCount (KERNEL32.@)
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*/
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UINT WINAPI SetHandleCount( UINT count )
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{
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return count;
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}
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/***********************************************************************
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* DosDateTimeToFileTime (KERNEL32.@)
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*/
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BOOL WINAPI DosDateTimeToFileTime( WORD fatdate, WORD fattime, FILETIME *ft )
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{
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TIME_FIELDS fields;
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LARGE_INTEGER time;
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fields.Year = (fatdate >> 9) + 1980;
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fields.Month = ((fatdate >> 5) & 0x0f);
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fields.Day = (fatdate & 0x1f);
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fields.Hour = (fattime >> 11);
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fields.Minute = (fattime >> 5) & 0x3f;
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fields.Second = (fattime & 0x1f) * 2;
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fields.Milliseconds = 0;
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if (!RtlTimeFieldsToTime( &fields, &time )) return FALSE;
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ft->dwLowDateTime = time.u.LowPart;
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ft->dwHighDateTime = time.u.HighPart;
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return TRUE;
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}
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/***********************************************************************
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* FileTimeToDosDateTime (KERNEL32.@)
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*/
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BOOL WINAPI FileTimeToDosDateTime( const FILETIME *ft, WORD *fatdate, WORD *fattime )
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{
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TIME_FIELDS fields;
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LARGE_INTEGER time;
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if (!fatdate || !fattime)
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{
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SetLastError( ERROR_INVALID_PARAMETER );
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return FALSE;
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}
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time.u.LowPart = ft->dwLowDateTime;
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time.u.HighPart = ft->dwHighDateTime;
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RtlTimeToTimeFields( &time, &fields );
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if (fields.Year < 1980)
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{
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SetLastError( ERROR_INVALID_PARAMETER );
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return FALSE;
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}
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*fattime = (fields.Hour << 11) + (fields.Minute << 5) + (fields.Second / 2);
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*fatdate = ((fields.Year - 1980) << 9) + (fields.Month << 5) + fields.Day;
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return TRUE;
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}
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/**************************************************************************
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* Operations on file names *
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**************************************************************************/
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/**************************************************************************
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* ReplaceFileA (KERNEL32.@)
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*/
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BOOL WINAPI ReplaceFileA(LPCSTR lpReplacedFileName,LPCSTR lpReplacementFileName,
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LPCSTR lpBackupFileName, DWORD dwReplaceFlags,
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LPVOID lpExclude, LPVOID lpReserved)
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{
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WCHAR *replacedW, *replacementW, *backupW = NULL;
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BOOL ret;
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/* This function only makes sense when the first two parameters are defined */
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if (!lpReplacedFileName || !(replacedW = FILE_name_AtoW( lpReplacedFileName, TRUE )))
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{
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SetLastError(ERROR_INVALID_PARAMETER);
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return FALSE;
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}
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if (!lpReplacementFileName || !(replacementW = FILE_name_AtoW( lpReplacementFileName, TRUE )))
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{
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HeapFree( GetProcessHeap(), 0, replacedW );
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SetLastError(ERROR_INVALID_PARAMETER);
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return FALSE;
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}
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/* The backup parameter, however, is optional */
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if (lpBackupFileName)
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{
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if (!(backupW = FILE_name_AtoW( lpBackupFileName, TRUE )))
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{
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HeapFree( GetProcessHeap(), 0, replacedW );
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HeapFree( GetProcessHeap(), 0, replacementW );
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SetLastError(ERROR_INVALID_PARAMETER);
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return FALSE;
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}
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}
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ret = ReplaceFileW( replacedW, replacementW, backupW, dwReplaceFlags, lpExclude, lpReserved );
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HeapFree( GetProcessHeap(), 0, replacedW );
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HeapFree( GetProcessHeap(), 0, replacementW );
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HeapFree( GetProcessHeap(), 0, backupW );
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return ret;
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}
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/***********************************************************************
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* OpenVxDHandle (KERNEL32.@)
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*
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* This function is supposed to return the corresponding Ring 0
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* ("kernel") handle for a Ring 3 handle in Win9x.
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* Evidently, Wine will have problems with this. But we try anyway,
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* maybe it helps...
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*/
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HANDLE WINAPI OpenVxDHandle(HANDLE hHandleRing3)
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{
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FIXME( "(%p), stub! (returning Ring 3 handle instead of Ring 0)\n", hHandleRing3);
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return hHandleRing3;
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}
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/****************************************************************************
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* DeviceIoControl (KERNEL32.@)
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*/
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BOOL WINAPI KERNEL32_DeviceIoControl( HANDLE handle, DWORD code, void *in_buff, DWORD in_count,
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void *out_buff, DWORD out_count, DWORD *returned,
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OVERLAPPED *overlapped )
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{
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TRACE( "(%p,%#lx,%p,%ld,%p,%ld,%p,%p)\n",
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handle, code, in_buff, in_count, out_buff, out_count, returned, overlapped );
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/* Check if this is a user defined control code for a VxD */
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if (HIWORD( code ) == 0 && (GetVersion() & 0x80000000))
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{
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typedef BOOL (WINAPI *DeviceIoProc)(DWORD, LPVOID, DWORD, LPVOID, DWORD, LPDWORD, LPOVERLAPPED);
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static DeviceIoProc (*vxd_get_proc)(HANDLE);
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DeviceIoProc proc = NULL;
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if (!vxd_get_proc) vxd_get_proc = (void *)GetProcAddress( GetModuleHandleW(L"krnl386.exe16"),
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"__wine_vxd_get_proc" );
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if (vxd_get_proc) proc = vxd_get_proc( handle );
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if (proc) return proc( code, in_buff, in_count, out_buff, out_count, returned, overlapped );
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}
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return DeviceIoControl( handle, code, in_buff, in_count, out_buff, out_count, returned, overlapped );
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}
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/***********************************************************************
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* OpenFile (KERNEL32.@)
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*/
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HFILE WINAPI OpenFile( LPCSTR name, OFSTRUCT *ofs, UINT mode )
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{
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HANDLE handle;
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FILETIME filetime;
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WORD filedatetime[2];
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DWORD len;
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if (!ofs) return HFILE_ERROR;
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TRACE("%s %s %s %s%s%s%s%s%s%s%s%s\n",name,
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((mode & 0x3 )==OF_READ)?"OF_READ":
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((mode & 0x3 )==OF_WRITE)?"OF_WRITE":
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((mode & 0x3 )==OF_READWRITE)?"OF_READWRITE":"unknown",
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((mode & 0x70 )==OF_SHARE_COMPAT)?"OF_SHARE_COMPAT":
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((mode & 0x70 )==OF_SHARE_DENY_NONE)?"OF_SHARE_DENY_NONE":
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((mode & 0x70 )==OF_SHARE_DENY_READ)?"OF_SHARE_DENY_READ":
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((mode & 0x70 )==OF_SHARE_DENY_WRITE)?"OF_SHARE_DENY_WRITE":
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((mode & 0x70 )==OF_SHARE_EXCLUSIVE)?"OF_SHARE_EXCLUSIVE":"unknown",
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((mode & OF_PARSE )==OF_PARSE)?"OF_PARSE ":"",
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((mode & OF_DELETE )==OF_DELETE)?"OF_DELETE ":"",
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((mode & OF_VERIFY )==OF_VERIFY)?"OF_VERIFY ":"",
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((mode & OF_SEARCH )==OF_SEARCH)?"OF_SEARCH ":"",
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((mode & OF_CANCEL )==OF_CANCEL)?"OF_CANCEL ":"",
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((mode & OF_CREATE )==OF_CREATE)?"OF_CREATE ":"",
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((mode & OF_PROMPT )==OF_PROMPT)?"OF_PROMPT ":"",
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((mode & OF_EXIST )==OF_EXIST)?"OF_EXIST ":"",
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((mode & OF_REOPEN )==OF_REOPEN)?"OF_REOPEN ":""
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);
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ofs->cBytes = sizeof(OFSTRUCT);
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ofs->nErrCode = 0;
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if (mode & OF_REOPEN) name = ofs->szPathName;
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if (!name) return HFILE_ERROR;
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TRACE("%s %04x\n", name, mode );
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/* the watcom 10.6 IDE relies on a valid path returned in ofs->szPathName
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Are there any cases where getting the path here is wrong?
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Uwe Bonnes 1997 Apr 2 */
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len = GetFullPathNameA( name, sizeof(ofs->szPathName), ofs->szPathName, NULL );
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if (!len) goto error;
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if (len >= sizeof(ofs->szPathName))
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{
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SetLastError(ERROR_INVALID_DATA);
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goto error;
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}
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/* OF_PARSE simply fills the structure */
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if (mode & OF_PARSE)
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{
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ofs->fFixedDisk = (GetDriveTypeA( ofs->szPathName ) != DRIVE_REMOVABLE);
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TRACE("(%s): OF_PARSE, res = '%s'\n", name, ofs->szPathName );
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return 0;
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}
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/* OF_CREATE is completely different from all other options, so
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handle it first */
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if (mode & OF_CREATE)
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{
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if ((handle = create_file_OF( name, mode )) == INVALID_HANDLE_VALUE)
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goto error;
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}
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else
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{
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/* Now look for the file */
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len = SearchPathA( NULL, name, NULL, sizeof(ofs->szPathName), ofs->szPathName, NULL );
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if (!len) goto error;
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if (len >= sizeof(ofs->szPathName))
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{
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SetLastError(ERROR_INVALID_DATA);
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goto error;
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}
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TRACE("found %s\n", debugstr_a(ofs->szPathName) );
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if (mode & OF_DELETE)
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{
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if (!DeleteFileA( ofs->szPathName )) goto error;
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TRACE("(%s): OF_DELETE return = OK\n", name);
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return TRUE;
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}
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handle = LongToHandle(_lopen( ofs->szPathName, mode ));
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if (handle == INVALID_HANDLE_VALUE) goto error;
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GetFileTime( handle, NULL, NULL, &filetime );
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FileTimeToDosDateTime( &filetime, &filedatetime[0], &filedatetime[1] );
|
|
if ((mode & OF_VERIFY) && (mode & OF_REOPEN))
|
|
{
|
|
if (ofs->Reserved1 != filedatetime[0] || ofs->Reserved2 != filedatetime[1] )
|
|
{
|
|
CloseHandle( handle );
|
|
WARN("(%s): OF_VERIFY failed\n", name );
|
|
/* FIXME: what error here? */
|
|
SetLastError( ERROR_FILE_NOT_FOUND );
|
|
goto error;
|
|
}
|
|
}
|
|
ofs->Reserved1 = filedatetime[0];
|
|
ofs->Reserved2 = filedatetime[1];
|
|
}
|
|
TRACE("(%s): OK, return = %p\n", name, handle );
|
|
if (mode & OF_EXIST) /* Return TRUE instead of a handle */
|
|
{
|
|
CloseHandle( handle );
|
|
return TRUE;
|
|
}
|
|
return HandleToLong(handle);
|
|
|
|
error: /* We get here if there was an error opening the file */
|
|
ofs->nErrCode = GetLastError();
|
|
WARN("(%s): return = HFILE_ERROR error= %d\n", name,ofs->nErrCode );
|
|
return HFILE_ERROR;
|
|
}
|