mirror of
git://source.winehq.org/git/wine.git
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1858 lines
57 KiB
C
1858 lines
57 KiB
C
/*
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* Win32 virtual memory functions
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*
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* Copyright 1997 Alexandre Julliard
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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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include "config.h"
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#include "wine/port.h"
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#include <assert.h>
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#include <errno.h>
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#ifdef HAVE_SYS_ERRNO_H
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#include <sys/errno.h>
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#endif
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#include <fcntl.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <sys/types.h>
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#ifdef HAVE_SYS_MMAN_H
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#include <sys/mman.h>
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#endif
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#include "winnls.h"
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#include "winbase.h"
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#include "wine/exception.h"
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#include "wine/unicode.h"
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#include "wine/library.h"
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#include "winerror.h"
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#include "file.h"
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#include "global.h"
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#include "wine/server.h"
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#include "msvcrt/excpt.h"
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#include "wine/debug.h"
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WINE_DEFAULT_DEBUG_CHANNEL(virtual);
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WINE_DECLARE_DEBUG_CHANNEL(module);
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#ifndef MS_SYNC
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#define MS_SYNC 0
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#endif
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/* File view */
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typedef struct _FV
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{
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struct _FV *next; /* Next view */
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struct _FV *prev; /* Prev view */
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void *base; /* Base address */
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UINT size; /* Size in bytes */
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UINT flags; /* Allocation flags */
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HANDLE mapping; /* Handle to the file mapping */
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HANDLERPROC handlerProc; /* Fault handler */
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LPVOID handlerArg; /* Fault handler argument */
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BYTE protect; /* Protection for all pages at allocation time */
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BYTE prot[1]; /* Protection byte for each page */
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} FILE_VIEW;
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/* Per-view flags */
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#define VFLAG_SYSTEM 0x01
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#define VFLAG_VALLOC 0x02 /* allocated by VirtualAlloc */
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/* Conversion from VPROT_* to Win32 flags */
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static const BYTE VIRTUAL_Win32Flags[16] =
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{
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PAGE_NOACCESS, /* 0 */
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PAGE_READONLY, /* READ */
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PAGE_READWRITE, /* WRITE */
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PAGE_READWRITE, /* READ | WRITE */
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PAGE_EXECUTE, /* EXEC */
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PAGE_EXECUTE_READ, /* READ | EXEC */
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PAGE_EXECUTE_READWRITE, /* WRITE | EXEC */
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PAGE_EXECUTE_READWRITE, /* READ | WRITE | EXEC */
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PAGE_WRITECOPY, /* WRITECOPY */
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PAGE_WRITECOPY, /* READ | WRITECOPY */
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PAGE_WRITECOPY, /* WRITE | WRITECOPY */
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PAGE_WRITECOPY, /* READ | WRITE | WRITECOPY */
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PAGE_EXECUTE_WRITECOPY, /* EXEC | WRITECOPY */
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PAGE_EXECUTE_WRITECOPY, /* READ | EXEC | WRITECOPY */
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PAGE_EXECUTE_WRITECOPY, /* WRITE | EXEC | WRITECOPY */
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PAGE_EXECUTE_WRITECOPY /* READ | WRITE | EXEC | WRITECOPY */
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};
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static FILE_VIEW *VIRTUAL_FirstView;
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static CRITICAL_SECTION csVirtual = CRITICAL_SECTION_INIT("csVirtual");
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#ifdef __i386__
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/* These are always the same on an i386, and it will be faster this way */
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# define page_mask 0xfff
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# define page_shift 12
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# define page_size 0x1000
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#else
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static UINT page_shift;
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static UINT page_mask;
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static UINT page_size;
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#endif /* __i386__ */
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#define granularity_mask 0xffff /* Allocation granularity (usually 64k) */
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#define ROUND_ADDR(addr,mask) \
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((void *)((UINT_PTR)(addr) & ~(mask)))
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#define ROUND_SIZE(addr,size) \
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(((UINT)(size) + ((UINT_PTR)(addr) & page_mask) + page_mask) & ~page_mask)
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#define VIRTUAL_DEBUG_DUMP_VIEW(view) \
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if (!TRACE_ON(virtual)); else VIRTUAL_DumpView(view)
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static LPVOID VIRTUAL_mmap( int fd, LPVOID start, DWORD size, DWORD offset_low,
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DWORD offset_high, int prot, int flags, BOOL *removable );
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/* filter for page-fault exceptions */
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static WINE_EXCEPTION_FILTER(page_fault)
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{
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if (GetExceptionCode() == EXCEPTION_ACCESS_VIOLATION)
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return EXCEPTION_EXECUTE_HANDLER;
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return EXCEPTION_CONTINUE_SEARCH;
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}
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/***********************************************************************
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* VIRTUAL_GetProtStr
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*/
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static const char *VIRTUAL_GetProtStr( BYTE prot )
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{
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static char buffer[6];
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buffer[0] = (prot & VPROT_COMMITTED) ? 'c' : '-';
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buffer[1] = (prot & VPROT_GUARD) ? 'g' : '-';
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buffer[2] = (prot & VPROT_READ) ? 'r' : '-';
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buffer[3] = (prot & VPROT_WRITE) ?
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((prot & VPROT_WRITECOPY) ? 'w' : 'W') : '-';
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buffer[4] = (prot & VPROT_EXEC) ? 'x' : '-';
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buffer[5] = 0;
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return buffer;
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}
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/***********************************************************************
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* VIRTUAL_DumpView
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*/
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static void VIRTUAL_DumpView( FILE_VIEW *view )
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{
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UINT i, count;
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char *addr = view->base;
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BYTE prot = view->prot[0];
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DPRINTF( "View: %p - %p", addr, addr + view->size - 1 );
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if (view->flags & VFLAG_SYSTEM)
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DPRINTF( " (system)\n" );
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else if (view->flags & VFLAG_VALLOC)
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DPRINTF( " (valloc)\n" );
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else if (view->mapping)
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DPRINTF( " %d\n", view->mapping );
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else
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DPRINTF( " (anonymous)\n");
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for (count = i = 1; i < view->size >> page_shift; i++, count++)
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{
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if (view->prot[i] == prot) continue;
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DPRINTF( " %p - %p %s\n",
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addr, addr + (count << page_shift) - 1, VIRTUAL_GetProtStr(prot) );
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addr += (count << page_shift);
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prot = view->prot[i];
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count = 0;
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}
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if (count)
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DPRINTF( " %p - %p %s\n",
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addr, addr + (count << page_shift) - 1, VIRTUAL_GetProtStr(prot) );
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}
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/***********************************************************************
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* VIRTUAL_Dump
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*/
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void VIRTUAL_Dump(void)
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{
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FILE_VIEW *view;
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DPRINTF( "\nDump of all virtual memory views:\n\n" );
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EnterCriticalSection(&csVirtual);
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view = VIRTUAL_FirstView;
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while (view)
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{
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VIRTUAL_DumpView( view );
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view = view->next;
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}
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LeaveCriticalSection(&csVirtual);
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}
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/***********************************************************************
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* VIRTUAL_FindView
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*
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* Find the view containing a given address.
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*
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* RETURNS
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* View: Success
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* NULL: Failure
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*/
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static FILE_VIEW *VIRTUAL_FindView( const void *addr ) /* [in] Address */
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{
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FILE_VIEW *view;
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EnterCriticalSection(&csVirtual);
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view = VIRTUAL_FirstView;
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while (view)
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{
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if (view->base > addr)
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{
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view = NULL;
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break;
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}
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if ((char*)view->base + view->size > (char*)addr) break;
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view = view->next;
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}
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LeaveCriticalSection(&csVirtual);
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return view;
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}
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/***********************************************************************
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* VIRTUAL_CreateView
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*
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* Create a new view and add it in the linked list.
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*/
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static FILE_VIEW *VIRTUAL_CreateView( void *base, UINT size, UINT flags,
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BYTE vprot, HANDLE mapping )
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{
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FILE_VIEW *view, *prev;
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/* Create the view structure */
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assert( !((unsigned int)base & page_mask) );
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assert( !(size & page_mask) );
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size >>= page_shift;
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if (!(view = (FILE_VIEW *)malloc( sizeof(*view) + size - 1 ))) return NULL;
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view->base = base;
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view->size = size << page_shift;
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view->flags = flags;
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view->mapping = mapping;
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view->protect = vprot;
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view->handlerProc = NULL;
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memset( view->prot, vprot, size );
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/* Duplicate the mapping handle */
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if (view->mapping &&
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!DuplicateHandle( GetCurrentProcess(), view->mapping,
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GetCurrentProcess(), &view->mapping,
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0, FALSE, DUPLICATE_SAME_ACCESS ))
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{
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free( view );
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return NULL;
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}
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/* Insert it in the linked list */
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EnterCriticalSection(&csVirtual);
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if (!VIRTUAL_FirstView || (VIRTUAL_FirstView->base > base))
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{
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view->next = VIRTUAL_FirstView;
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view->prev = NULL;
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if (view->next) view->next->prev = view;
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VIRTUAL_FirstView = view;
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}
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else
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{
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prev = VIRTUAL_FirstView;
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while (prev->next && (prev->next->base < base)) prev = prev->next;
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view->next = prev->next;
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view->prev = prev;
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if (view->next) view->next->prev = view;
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prev->next = view;
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}
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LeaveCriticalSection(&csVirtual);
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VIRTUAL_DEBUG_DUMP_VIEW( view );
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return view;
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}
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/***********************************************************************
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* VIRTUAL_DeleteView
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* Deletes a view.
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*
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* RETURNS
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* None
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*/
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static void VIRTUAL_DeleteView(
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FILE_VIEW *view /* [in] View */
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) {
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if (!(view->flags & VFLAG_SYSTEM))
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munmap( (void *)view->base, view->size );
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EnterCriticalSection(&csVirtual);
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if (view->next) view->next->prev = view->prev;
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if (view->prev) view->prev->next = view->next;
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else VIRTUAL_FirstView = view->next;
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LeaveCriticalSection(&csVirtual);
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if (view->mapping) NtClose( view->mapping );
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free( view );
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}
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/***********************************************************************
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* VIRTUAL_GetUnixProt
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*
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* Convert page protections to protection for mmap/mprotect.
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*/
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static int VIRTUAL_GetUnixProt( BYTE vprot )
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{
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int prot = 0;
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if ((vprot & VPROT_COMMITTED) && !(vprot & VPROT_GUARD))
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{
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if (vprot & VPROT_READ) prot |= PROT_READ;
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if (vprot & VPROT_WRITE) prot |= PROT_WRITE;
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if (vprot & VPROT_WRITECOPY) prot |= PROT_WRITE;
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if (vprot & VPROT_EXEC) prot |= PROT_EXEC;
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}
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return prot;
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}
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/***********************************************************************
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* VIRTUAL_GetWin32Prot
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*
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* Convert page protections to Win32 flags.
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*
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* RETURNS
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* None
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*/
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static void VIRTUAL_GetWin32Prot(
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BYTE vprot, /* [in] Page protection flags */
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DWORD *protect, /* [out] Location to store Win32 protection flags */
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DWORD *state /* [out] Location to store mem state flag */
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) {
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if (protect) {
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*protect = VIRTUAL_Win32Flags[vprot & 0x0f];
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/* if (vprot & VPROT_GUARD) *protect |= PAGE_GUARD;*/
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if (vprot & VPROT_NOCACHE) *protect |= PAGE_NOCACHE;
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if (vprot & VPROT_GUARD) *protect = PAGE_NOACCESS;
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}
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if (state) *state = (vprot & VPROT_COMMITTED) ? MEM_COMMIT : MEM_RESERVE;
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}
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/***********************************************************************
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* VIRTUAL_GetProt
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*
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* Build page protections from Win32 flags.
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*
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* RETURNS
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* Value of page protection flags
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*/
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static BYTE VIRTUAL_GetProt(
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DWORD protect /* [in] Win32 protection flags */
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) {
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BYTE vprot;
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switch(protect & 0xff)
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{
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case PAGE_READONLY:
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vprot = VPROT_READ;
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break;
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case PAGE_READWRITE:
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vprot = VPROT_READ | VPROT_WRITE;
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break;
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case PAGE_WRITECOPY:
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/* MSDN CreateFileMapping() states that if PAGE_WRITECOPY is given,
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* that the hFile must have been opened with GENERIC_READ and
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* GENERIC_WRITE access. This is WRONG as tests show that you
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* only need GENERIC_READ access (at least for Win9x,
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* FIXME: what about NT?). Thus, we don't put VPROT_WRITE in
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* PAGE_WRITECOPY and PAGE_EXECUTE_WRITECOPY.
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*/
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vprot = VPROT_READ | VPROT_WRITECOPY;
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break;
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case PAGE_EXECUTE:
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vprot = VPROT_EXEC;
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break;
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case PAGE_EXECUTE_READ:
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vprot = VPROT_EXEC | VPROT_READ;
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break;
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case PAGE_EXECUTE_READWRITE:
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vprot = VPROT_EXEC | VPROT_READ | VPROT_WRITE;
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break;
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case PAGE_EXECUTE_WRITECOPY:
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/* See comment for PAGE_WRITECOPY above */
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vprot = VPROT_EXEC | VPROT_READ | VPROT_WRITECOPY;
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break;
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case PAGE_NOACCESS:
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default:
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vprot = 0;
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break;
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}
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if (protect & PAGE_GUARD) vprot |= VPROT_GUARD;
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if (protect & PAGE_NOCACHE) vprot |= VPROT_NOCACHE;
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return vprot;
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}
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/***********************************************************************
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* VIRTUAL_SetProt
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*
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* Change the protection of a range of pages.
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*
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* RETURNS
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* TRUE: Success
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* FALSE: Failure
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*/
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static BOOL VIRTUAL_SetProt( FILE_VIEW *view, /* [in] Pointer to view */
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void *base, /* [in] Starting address */
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UINT size, /* [in] Size in bytes */
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BYTE vprot ) /* [in] Protections to use */
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{
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TRACE("%p-%p %s\n",
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base, (char *)base + size - 1, VIRTUAL_GetProtStr( vprot ) );
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if (mprotect( base, size, VIRTUAL_GetUnixProt(vprot) ))
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return FALSE; /* FIXME: last error */
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memset( view->prot + (((char *)base - (char *)view->base) >> page_shift),
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vprot, size >> page_shift );
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VIRTUAL_DEBUG_DUMP_VIEW( view );
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return TRUE;
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}
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|
|
|
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/***********************************************************************
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* anon_mmap_aligned
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*
|
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* Create an anonymous mapping aligned to the allocation granularity.
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*/
|
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static void *anon_mmap_aligned( void *base, unsigned int size, int prot, int flags )
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{
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void *ptr;
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unsigned int view_size = size + (base ? 0 : granularity_mask + 1);
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if ((ptr = wine_anon_mmap( base, view_size, prot, flags )) == (void *)-1)
|
|
{
|
|
/* KB: Q125713, 25-SEP-1995, "Common File Mapping Problems and
|
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* Platform Differences":
|
|
* Windows NT: ERROR_INVALID_PARAMETER
|
|
* Windows 95: ERROR_INVALID_ADDRESS.
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|
*/
|
|
if (errno == ENOMEM) SetLastError( ERROR_OUTOFMEMORY );
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else
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{
|
|
if (GetVersion() & 0x80000000) /* win95 */
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SetLastError( ERROR_INVALID_ADDRESS );
|
|
else
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|
SetLastError( ERROR_INVALID_PARAMETER );
|
|
}
|
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return ptr;
|
|
}
|
|
|
|
if (!base)
|
|
{
|
|
/* Release the extra memory while keeping the range
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|
* starting on the granularity boundary. */
|
|
if ((unsigned int)ptr & granularity_mask)
|
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{
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unsigned int extra = granularity_mask + 1 - ((unsigned int)ptr & granularity_mask);
|
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munmap( ptr, extra );
|
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ptr = (char *)ptr + extra;
|
|
view_size -= extra;
|
|
}
|
|
if (view_size > size)
|
|
munmap( (char *)ptr + size, view_size - size );
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|
}
|
|
else if (ptr != base)
|
|
{
|
|
/* We couldn't get the address we wanted */
|
|
munmap( ptr, view_size );
|
|
SetLastError( ERROR_INVALID_ADDRESS );
|
|
ptr = (void *)-1;
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|
}
|
|
return ptr;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* do_relocations
|
|
*
|
|
* Apply the relocations to a mapped PE image
|
|
*/
|
|
static int do_relocations( char *base, const IMAGE_DATA_DIRECTORY *dir,
|
|
int delta, DWORD total_size )
|
|
{
|
|
IMAGE_BASE_RELOCATION *rel;
|
|
|
|
for (rel = (IMAGE_BASE_RELOCATION *)(base + dir->VirtualAddress);
|
|
((char *)rel < base + dir->VirtualAddress + dir->Size) && rel->SizeOfBlock;
|
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rel = (IMAGE_BASE_RELOCATION*)((char*)rel + rel->SizeOfBlock) )
|
|
{
|
|
char *page = base + rel->VirtualAddress;
|
|
WORD *TypeOffset = (WORD *)(rel + 1);
|
|
int i, count = (rel->SizeOfBlock - sizeof(*rel)) / sizeof(*TypeOffset);
|
|
|
|
if (!count) continue;
|
|
|
|
/* sanity checks */
|
|
if ((char *)rel + rel->SizeOfBlock > base + dir->VirtualAddress + dir->Size ||
|
|
page > base + total_size)
|
|
{
|
|
ERR_(module)("invalid relocation %p,%lx,%ld at %p,%lx,%lx\n",
|
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rel, rel->VirtualAddress, rel->SizeOfBlock,
|
|
base, dir->VirtualAddress, dir->Size );
|
|
return 0;
|
|
}
|
|
|
|
TRACE_(module)("%ld relocations for page %lx\n", rel->SizeOfBlock, rel->VirtualAddress);
|
|
|
|
/* patching in reverse order */
|
|
for (i = 0 ; i < count; i++)
|
|
{
|
|
int offset = TypeOffset[i] & 0xFFF;
|
|
int type = TypeOffset[i] >> 12;
|
|
switch(type)
|
|
{
|
|
case IMAGE_REL_BASED_ABSOLUTE:
|
|
break;
|
|
case IMAGE_REL_BASED_HIGH:
|
|
*(short*)(page+offset) += HIWORD(delta);
|
|
break;
|
|
case IMAGE_REL_BASED_LOW:
|
|
*(short*)(page+offset) += LOWORD(delta);
|
|
break;
|
|
case IMAGE_REL_BASED_HIGHLOW:
|
|
*(int*)(page+offset) += delta;
|
|
/* FIXME: if this is an exported address, fire up enhanced logic */
|
|
break;
|
|
default:
|
|
FIXME_(module)("Unknown/unsupported fixup type %d.\n", type);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* map_image
|
|
*
|
|
* Map an executable (PE format) image into memory.
|
|
*/
|
|
static LPVOID map_image( HANDLE hmapping, int fd, char *base, DWORD total_size,
|
|
DWORD header_size, HANDLE shared_file, DWORD shared_size,
|
|
BOOL removable )
|
|
{
|
|
IMAGE_DOS_HEADER *dos;
|
|
IMAGE_NT_HEADERS *nt;
|
|
IMAGE_SECTION_HEADER *sec;
|
|
IMAGE_DATA_DIRECTORY *imports;
|
|
int i, pos;
|
|
DWORD err = GetLastError();
|
|
FILE_VIEW *view;
|
|
char *ptr;
|
|
int shared_fd = -1;
|
|
|
|
SetLastError( ERROR_BAD_EXE_FORMAT ); /* generic error */
|
|
|
|
/* zero-map the whole range */
|
|
|
|
if (base < (char *)0x110000) base = 0; /* make sure the DOS area remains free */
|
|
if ((ptr = wine_anon_mmap( base, total_size,
|
|
PROT_READ | PROT_WRITE | PROT_EXEC, 0 )) == (char *)-1)
|
|
{
|
|
ptr = wine_anon_mmap( NULL, total_size,
|
|
PROT_READ | PROT_WRITE | PROT_EXEC, 0 );
|
|
if (ptr == (char *)-1)
|
|
{
|
|
ERR_(module)("Not enough memory for module (%ld bytes)\n", total_size);
|
|
goto error;
|
|
}
|
|
}
|
|
TRACE_(module)( "mapped PE file at %p-%p\n", ptr, ptr + total_size );
|
|
|
|
/* map the header */
|
|
|
|
if (VIRTUAL_mmap( fd, ptr, header_size, 0, 0, PROT_READ,
|
|
MAP_PRIVATE | MAP_FIXED, &removable ) == (char *)-1) goto error;
|
|
dos = (IMAGE_DOS_HEADER *)ptr;
|
|
nt = (IMAGE_NT_HEADERS *)(ptr + dos->e_lfanew);
|
|
if ((char *)(nt + 1) > ptr + header_size) goto error;
|
|
|
|
sec = (IMAGE_SECTION_HEADER*)((char*)&nt->OptionalHeader+nt->FileHeader.SizeOfOptionalHeader);
|
|
if ((char *)(sec + nt->FileHeader.NumberOfSections) > ptr + header_size) goto error;
|
|
|
|
imports = nt->OptionalHeader.DataDirectory + IMAGE_DIRECTORY_ENTRY_IMPORT;
|
|
if (!imports->Size || !imports->VirtualAddress) imports = NULL;
|
|
|
|
/* check the architecture */
|
|
|
|
if (nt->FileHeader.Machine != IMAGE_FILE_MACHINE_I386)
|
|
{
|
|
MESSAGE("Trying to load PE image for unsupported architecture (");
|
|
switch (nt->FileHeader.Machine)
|
|
{
|
|
case IMAGE_FILE_MACHINE_UNKNOWN: MESSAGE("Unknown"); break;
|
|
case IMAGE_FILE_MACHINE_I860: MESSAGE("I860"); break;
|
|
case IMAGE_FILE_MACHINE_R3000: MESSAGE("R3000"); break;
|
|
case IMAGE_FILE_MACHINE_R4000: MESSAGE("R4000"); break;
|
|
case IMAGE_FILE_MACHINE_R10000: MESSAGE("R10000"); break;
|
|
case IMAGE_FILE_MACHINE_ALPHA: MESSAGE("Alpha"); break;
|
|
case IMAGE_FILE_MACHINE_POWERPC: MESSAGE("PowerPC"); break;
|
|
default: MESSAGE("Unknown-%04x", nt->FileHeader.Machine); break;
|
|
}
|
|
MESSAGE(")\n");
|
|
goto error;
|
|
}
|
|
|
|
/* retrieve the shared sections file */
|
|
|
|
if (shared_size)
|
|
{
|
|
if ((shared_fd = FILE_GetUnixHandle( shared_file, GENERIC_READ )) == -1) goto error;
|
|
CloseHandle( shared_file ); /* we no longer need it */
|
|
shared_file = 0;
|
|
}
|
|
|
|
/* map all the sections */
|
|
|
|
for (i = pos = 0; i < nt->FileHeader.NumberOfSections; i++, sec++)
|
|
{
|
|
DWORD size;
|
|
|
|
/* a few sanity checks */
|
|
size = sec->VirtualAddress + ROUND_SIZE( sec->VirtualAddress, sec->Misc.VirtualSize );
|
|
if (sec->VirtualAddress > total_size || size > total_size || size < sec->VirtualAddress)
|
|
{
|
|
ERR_(module)( "Section %.8s too large (%lx+%lx/%lx)\n",
|
|
sec->Name, sec->VirtualAddress, sec->Misc.VirtualSize, total_size );
|
|
goto error;
|
|
}
|
|
|
|
if ((sec->Characteristics & IMAGE_SCN_MEM_SHARED) &&
|
|
(sec->Characteristics & IMAGE_SCN_MEM_WRITE))
|
|
{
|
|
size = ROUND_SIZE( 0, sec->Misc.VirtualSize );
|
|
TRACE_(module)( "mapping shared section %.8s at %p off %lx (%x) size %lx (%lx) flags %lx\n",
|
|
sec->Name, ptr + sec->VirtualAddress,
|
|
sec->PointerToRawData, pos, sec->SizeOfRawData,
|
|
size, sec->Characteristics );
|
|
if (VIRTUAL_mmap( shared_fd, ptr + sec->VirtualAddress, size,
|
|
pos, 0, PROT_READ|PROT_WRITE|PROT_EXEC,
|
|
MAP_SHARED|MAP_FIXED, NULL ) == (void *)-1)
|
|
{
|
|
ERR_(module)( "Could not map shared section %.8s\n", sec->Name );
|
|
goto error;
|
|
}
|
|
|
|
/* check if the import directory falls inside this section */
|
|
if (imports && imports->VirtualAddress >= sec->VirtualAddress &&
|
|
imports->VirtualAddress < sec->VirtualAddress + size)
|
|
{
|
|
DWORD base = imports->VirtualAddress & ~page_mask;
|
|
DWORD end = imports->VirtualAddress + ROUND_SIZE( imports->VirtualAddress,
|
|
imports->Size );
|
|
if (end > sec->VirtualAddress + size) end = sec->VirtualAddress + size;
|
|
if (end > base) VIRTUAL_mmap( shared_fd, ptr + base, end - base,
|
|
pos, 0, PROT_READ|PROT_WRITE|PROT_EXEC,
|
|
MAP_PRIVATE|MAP_FIXED, NULL );
|
|
}
|
|
pos += size;
|
|
continue;
|
|
}
|
|
|
|
if (sec->Characteristics & IMAGE_SCN_CNT_UNINITIALIZED_DATA) continue;
|
|
if (!sec->PointerToRawData || !sec->SizeOfRawData) continue;
|
|
|
|
TRACE_(module)( "mapping section %.8s at %p off %lx size %lx flags %lx\n",
|
|
sec->Name, ptr + sec->VirtualAddress,
|
|
sec->PointerToRawData, sec->SizeOfRawData,
|
|
sec->Characteristics );
|
|
|
|
/* Note: if the section is not aligned properly VIRTUAL_mmap will magically
|
|
* fall back to read(), so we don't need to check anything here.
|
|
*/
|
|
if (VIRTUAL_mmap( fd, ptr + sec->VirtualAddress, sec->SizeOfRawData,
|
|
sec->PointerToRawData, 0, PROT_READ|PROT_WRITE|PROT_EXEC,
|
|
MAP_PRIVATE | MAP_FIXED, &removable ) == (void *)-1)
|
|
{
|
|
ERR_(module)( "Could not map section %.8s, file probably truncated\n", sec->Name );
|
|
goto error;
|
|
}
|
|
|
|
if ((sec->SizeOfRawData < sec->Misc.VirtualSize) && (sec->SizeOfRawData & page_mask))
|
|
{
|
|
DWORD end = ROUND_SIZE( 0, sec->SizeOfRawData );
|
|
if (end > sec->Misc.VirtualSize) end = sec->Misc.VirtualSize;
|
|
TRACE_(module)("clearing %p - %p\n",
|
|
ptr + sec->VirtualAddress + sec->SizeOfRawData,
|
|
ptr + sec->VirtualAddress + end );
|
|
memset( ptr + sec->VirtualAddress + sec->SizeOfRawData, 0,
|
|
end - sec->SizeOfRawData );
|
|
}
|
|
}
|
|
|
|
|
|
/* perform base relocation, if necessary */
|
|
|
|
if (ptr != base)
|
|
{
|
|
const IMAGE_DATA_DIRECTORY *relocs;
|
|
|
|
relocs = &nt->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_BASERELOC];
|
|
if (!relocs->VirtualAddress || !relocs->Size)
|
|
{
|
|
if (nt->OptionalHeader.ImageBase == 0x400000)
|
|
ERR("Standard load address for a Win32 program (0x00400000) not available - security-patched kernel ?\n");
|
|
else
|
|
ERR( "FATAL: Need to relocate module from addr %lx, but there are no relocation records\n",
|
|
nt->OptionalHeader.ImageBase );
|
|
SetLastError( ERROR_BAD_EXE_FORMAT );
|
|
goto error;
|
|
}
|
|
|
|
/* FIXME: If we need to relocate a system DLL (base > 2GB) we should
|
|
* really make sure that the *new* base address is also > 2GB.
|
|
* Some DLLs really check the MSB of the module handle :-/
|
|
*/
|
|
if ((nt->OptionalHeader.ImageBase & 0x80000000) && !((DWORD)base & 0x80000000))
|
|
ERR( "Forced to relocate system DLL (base > 2GB). This is not good.\n" );
|
|
|
|
if (!do_relocations( ptr, relocs, ptr - base, total_size ))
|
|
{
|
|
SetLastError( ERROR_BAD_EXE_FORMAT );
|
|
goto error;
|
|
}
|
|
}
|
|
|
|
if (removable) hmapping = 0; /* don't keep handle open on removable media */
|
|
if (!(view = VIRTUAL_CreateView( ptr, total_size, 0, VPROT_COMMITTED|VPROT_READ, hmapping )))
|
|
{
|
|
SetLastError( ERROR_OUTOFMEMORY );
|
|
goto error;
|
|
}
|
|
|
|
/* set the image protections */
|
|
|
|
sec = (IMAGE_SECTION_HEADER*)((char *)&nt->OptionalHeader+nt->FileHeader.SizeOfOptionalHeader);
|
|
for (i = 0; i < nt->FileHeader.NumberOfSections; i++, sec++)
|
|
{
|
|
DWORD size = ROUND_SIZE( sec->VirtualAddress, sec->Misc.VirtualSize );
|
|
BYTE vprot = VPROT_COMMITTED;
|
|
if (sec->Characteristics & IMAGE_SCN_MEM_READ) vprot |= VPROT_READ;
|
|
if (sec->Characteristics & IMAGE_SCN_MEM_WRITE) vprot |= VPROT_WRITE|VPROT_WRITECOPY;
|
|
if (sec->Characteristics & IMAGE_SCN_MEM_EXECUTE) vprot |= VPROT_EXEC;
|
|
|
|
/* make sure the import directory is writable */
|
|
if (imports && imports->VirtualAddress >= sec->VirtualAddress &&
|
|
imports->VirtualAddress < sec->VirtualAddress + size)
|
|
vprot |= VPROT_READ|VPROT_WRITE|VPROT_WRITECOPY;
|
|
|
|
VIRTUAL_SetProt( view, ptr + sec->VirtualAddress, size, vprot );
|
|
}
|
|
|
|
SetLastError( err ); /* restore last error */
|
|
close( fd );
|
|
if (shared_fd != -1) close( shared_fd );
|
|
return ptr;
|
|
|
|
error:
|
|
if (ptr != (char *)-1) munmap( ptr, total_size );
|
|
close( fd );
|
|
if (shared_fd != -1) close( shared_fd );
|
|
if (shared_file) CloseHandle( shared_file );
|
|
return NULL;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* VIRTUAL_Init
|
|
*/
|
|
#ifndef page_mask
|
|
DECL_GLOBAL_CONSTRUCTOR(VIRTUAL_Init)
|
|
{
|
|
page_size = getpagesize();
|
|
page_mask = page_size - 1;
|
|
/* Make sure we have a power of 2 */
|
|
assert( !(page_size & page_mask) );
|
|
page_shift = 0;
|
|
while ((1 << page_shift) != page_size) page_shift++;
|
|
}
|
|
#endif /* page_mask */
|
|
|
|
|
|
/***********************************************************************
|
|
* VIRTUAL_SetFaultHandler
|
|
*/
|
|
BOOL VIRTUAL_SetFaultHandler( LPCVOID addr, HANDLERPROC proc, LPVOID arg )
|
|
{
|
|
FILE_VIEW *view;
|
|
|
|
if (!(view = VIRTUAL_FindView( addr ))) return FALSE;
|
|
view->handlerProc = proc;
|
|
view->handlerArg = arg;
|
|
return TRUE;
|
|
}
|
|
|
|
/***********************************************************************
|
|
* VIRTUAL_HandleFault
|
|
*/
|
|
DWORD VIRTUAL_HandleFault( LPCVOID addr )
|
|
{
|
|
FILE_VIEW *view = VIRTUAL_FindView( addr );
|
|
DWORD ret = EXCEPTION_ACCESS_VIOLATION;
|
|
|
|
if (view)
|
|
{
|
|
if (view->handlerProc)
|
|
{
|
|
if (view->handlerProc(view->handlerArg, addr)) ret = 0; /* handled */
|
|
}
|
|
else
|
|
{
|
|
BYTE vprot = view->prot[((char *)addr - (char *)view->base) >> page_shift];
|
|
void *page = (void *)((UINT_PTR)addr & ~page_mask);
|
|
char *stack = (char *)NtCurrentTeb()->stack_base + SIGNAL_STACK_SIZE + page_mask + 1;
|
|
if (vprot & VPROT_GUARD)
|
|
{
|
|
VIRTUAL_SetProt( view, page, page_mask + 1, vprot & ~VPROT_GUARD );
|
|
ret = STATUS_GUARD_PAGE_VIOLATION;
|
|
}
|
|
/* is it inside the stack guard pages? */
|
|
if (((char *)addr >= stack) && ((char *)addr < stack + 2*(page_mask+1)))
|
|
ret = STATUS_STACK_OVERFLOW;
|
|
}
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
|
|
|
|
/***********************************************************************
|
|
* unaligned_mmap
|
|
*
|
|
* Linux kernels before 2.4.x can support non page-aligned offsets, as
|
|
* long as the offset is aligned to the filesystem block size. This is
|
|
* a big performance gain so we want to take advantage of it.
|
|
*
|
|
* However, when we use 64-bit file support this doesn't work because
|
|
* glibc rejects unaligned offsets. Also glibc 2.1.3 mmap64 is broken
|
|
* in that it rounds unaligned offsets down to a page boundary. For
|
|
* these reasons we do a direct system call here.
|
|
*/
|
|
static void *unaligned_mmap( void *addr, size_t length, unsigned int prot,
|
|
unsigned int flags, int fd, unsigned int offset_low,
|
|
unsigned int offset_high )
|
|
{
|
|
#if defined(linux) && defined(__i386__) && defined(__GNUC__)
|
|
if (!offset_high && (offset_low & page_mask))
|
|
{
|
|
int ret;
|
|
|
|
struct
|
|
{
|
|
void *addr;
|
|
unsigned int length;
|
|
unsigned int prot;
|
|
unsigned int flags;
|
|
unsigned int fd;
|
|
unsigned int offset;
|
|
} args;
|
|
|
|
args.addr = addr;
|
|
args.length = length;
|
|
args.prot = prot;
|
|
args.flags = flags;
|
|
args.fd = fd;
|
|
args.offset = offset_low;
|
|
|
|
__asm__ __volatile__("push %%ebx\n\t"
|
|
"movl %2,%%ebx\n\t"
|
|
"int $0x80\n\t"
|
|
"popl %%ebx"
|
|
: "=a" (ret)
|
|
: "0" (90), /* SYS_mmap */
|
|
"g" (&args) );
|
|
if (ret < 0 && ret > -4096)
|
|
{
|
|
errno = -ret;
|
|
ret = -1;
|
|
}
|
|
return (void *)ret;
|
|
}
|
|
#endif
|
|
return mmap( addr, length, prot, flags, fd, ((off_t)offset_high << 32) | offset_low );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* VIRTUAL_mmap
|
|
*
|
|
* Wrapper for mmap() that handles anonymous mappings portably,
|
|
* and falls back to read if mmap of a file fails.
|
|
*/
|
|
static LPVOID VIRTUAL_mmap( int fd, LPVOID start, DWORD size,
|
|
DWORD offset_low, DWORD offset_high,
|
|
int prot, int flags, BOOL *removable )
|
|
{
|
|
int pos;
|
|
LPVOID ret;
|
|
off_t offset;
|
|
BOOL is_shared_write = FALSE;
|
|
|
|
if (fd == -1) return wine_anon_mmap( start, size, prot, flags );
|
|
|
|
if (prot & PROT_WRITE)
|
|
{
|
|
#ifdef MAP_SHARED
|
|
if (flags & MAP_SHARED) is_shared_write = TRUE;
|
|
#endif
|
|
#ifdef MAP_PRIVATE
|
|
if (!(flags & MAP_PRIVATE)) is_shared_write = TRUE;
|
|
#endif
|
|
}
|
|
|
|
if (removable && *removable)
|
|
{
|
|
/* if on removable media, try using read instead of mmap */
|
|
if (!is_shared_write) goto fake_mmap;
|
|
*removable = FALSE;
|
|
}
|
|
|
|
if ((ret = unaligned_mmap( start, size, prot, flags, fd,
|
|
offset_low, offset_high )) != (LPVOID)-1) return ret;
|
|
|
|
/* mmap() failed; if this is because the file offset is not */
|
|
/* page-aligned (EINVAL), or because the underlying filesystem */
|
|
/* does not support mmap() (ENOEXEC,ENODEV), we do it by hand. */
|
|
|
|
if ((errno != ENOEXEC) && (errno != EINVAL) && (errno != ENODEV)) return ret;
|
|
if (is_shared_write) return ret; /* we cannot fake shared write mappings */
|
|
|
|
fake_mmap:
|
|
/* Reserve the memory with an anonymous mmap */
|
|
ret = wine_anon_mmap( start, size, PROT_READ | PROT_WRITE, flags );
|
|
if (ret == (LPVOID)-1) return ret;
|
|
/* Now read in the file */
|
|
offset = ((off_t)offset_high << 32) | offset_low;
|
|
if ((pos = lseek( fd, offset, SEEK_SET )) == -1)
|
|
{
|
|
munmap( ret, size );
|
|
return (LPVOID)-1;
|
|
}
|
|
read( fd, ret, size );
|
|
lseek( fd, pos, SEEK_SET ); /* Restore the file pointer */
|
|
mprotect( ret, size, prot ); /* Set the right protection */
|
|
return ret;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* VirtualAlloc (KERNEL32.@)
|
|
* Reserves or commits a region of pages in virtual address space
|
|
*
|
|
* RETURNS
|
|
* Base address of allocated region of pages
|
|
* NULL: Failure
|
|
*/
|
|
LPVOID WINAPI VirtualAlloc(
|
|
LPVOID addr, /* [in] Address of region to reserve or commit */
|
|
DWORD size, /* [in] Size of region */
|
|
DWORD type, /* [in] Type of allocation */
|
|
DWORD protect)/* [in] Type of access protection */
|
|
{
|
|
FILE_VIEW *view;
|
|
char *ptr, *base;
|
|
BYTE vprot;
|
|
|
|
TRACE("%p %08lx %lx %08lx\n", addr, size, type, protect );
|
|
|
|
/* Round parameters to a page boundary */
|
|
|
|
if (size > 0x7fc00000) /* 2Gb - 4Mb */
|
|
{
|
|
SetLastError( ERROR_OUTOFMEMORY );
|
|
return NULL;
|
|
}
|
|
if (addr)
|
|
{
|
|
if (type & MEM_RESERVE) /* Round down to 64k boundary */
|
|
base = ROUND_ADDR( addr, granularity_mask );
|
|
else
|
|
base = ROUND_ADDR( addr, page_mask );
|
|
size = (((UINT_PTR)addr + size + page_mask) & ~page_mask) - (UINT_PTR)base;
|
|
if ((base <= (char *)granularity_mask) || (base + size < base))
|
|
{
|
|
/* disallow low 64k and wrap-around */
|
|
SetLastError( ERROR_INVALID_PARAMETER );
|
|
return NULL;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
base = 0;
|
|
size = (size + page_mask) & ~page_mask;
|
|
}
|
|
|
|
if (type & MEM_TOP_DOWN) {
|
|
/* FIXME: MEM_TOP_DOWN allocates the largest possible address.
|
|
* Is there _ANY_ way to do it with UNIX mmap()?
|
|
*/
|
|
WARN("MEM_TOP_DOWN ignored\n");
|
|
type &= ~MEM_TOP_DOWN;
|
|
}
|
|
/* Compute the alloc type flags */
|
|
|
|
if (!(type & (MEM_COMMIT | MEM_RESERVE | MEM_SYSTEM)) ||
|
|
(type & ~(MEM_COMMIT | MEM_RESERVE | MEM_SYSTEM)))
|
|
{
|
|
ERR("called with wrong alloc type flags (%08lx) !\n", type);
|
|
SetLastError( ERROR_INVALID_PARAMETER );
|
|
return NULL;
|
|
}
|
|
if (type & (MEM_COMMIT | MEM_SYSTEM))
|
|
vprot = VIRTUAL_GetProt( protect ) | VPROT_COMMITTED;
|
|
else vprot = 0;
|
|
|
|
/* Reserve the memory */
|
|
|
|
if ((type & MEM_RESERVE) || !base)
|
|
{
|
|
if (type & MEM_SYSTEM)
|
|
{
|
|
if (!(view = VIRTUAL_CreateView( base, size, VFLAG_VALLOC | VFLAG_SYSTEM, vprot, 0 )))
|
|
{
|
|
SetLastError( ERROR_OUTOFMEMORY );
|
|
return NULL;
|
|
}
|
|
return (LPVOID)base;
|
|
}
|
|
ptr = anon_mmap_aligned( base, size, VIRTUAL_GetUnixProt( vprot ), 0 );
|
|
if (ptr == (void *)-1) return NULL;
|
|
|
|
if (!(view = VIRTUAL_CreateView( ptr, size, VFLAG_VALLOC, vprot, 0 )))
|
|
{
|
|
munmap( ptr, size );
|
|
SetLastError( ERROR_OUTOFMEMORY );
|
|
return NULL;
|
|
}
|
|
return ptr;
|
|
}
|
|
|
|
/* Commit the pages */
|
|
|
|
if (!(view = VIRTUAL_FindView( base )) ||
|
|
(base + size > (char *)view->base + view->size))
|
|
{
|
|
SetLastError( ERROR_INVALID_ADDRESS );
|
|
return NULL;
|
|
}
|
|
|
|
if (!VIRTUAL_SetProt( view, base, size, vprot )) return NULL;
|
|
return (LPVOID)base;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* VirtualAllocEx (KERNEL32.@)
|
|
*
|
|
* Seems to be just as VirtualAlloc, but with process handle.
|
|
*/
|
|
LPVOID WINAPI VirtualAllocEx(
|
|
HANDLE hProcess, /* [in] Handle of process to do mem operation */
|
|
LPVOID addr, /* [in] Address of region to reserve or commit */
|
|
DWORD size, /* [in] Size of region */
|
|
DWORD type, /* [in] Type of allocation */
|
|
DWORD protect /* [in] Type of access protection */
|
|
) {
|
|
if (MapProcessHandle( hProcess ) == GetCurrentProcessId())
|
|
return VirtualAlloc( addr, size, type, protect );
|
|
ERR("Unsupported on other process\n");
|
|
return NULL;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* VirtualFree (KERNEL32.@)
|
|
* Release or decommits a region of pages in virtual address space.
|
|
*
|
|
* RETURNS
|
|
* TRUE: Success
|
|
* FALSE: Failure
|
|
*/
|
|
BOOL WINAPI VirtualFree(
|
|
LPVOID addr, /* [in] Address of region of committed pages */
|
|
DWORD size, /* [in] Size of region */
|
|
DWORD type /* [in] Type of operation */
|
|
) {
|
|
FILE_VIEW *view;
|
|
char *base;
|
|
|
|
TRACE("%p %08lx %lx\n", addr, size, type );
|
|
|
|
/* Fix the parameters */
|
|
|
|
size = ROUND_SIZE( addr, size );
|
|
base = ROUND_ADDR( addr, page_mask );
|
|
|
|
if (!(view = VIRTUAL_FindView( base )) ||
|
|
(base + size > (char *)view->base + view->size) ||
|
|
!(view->flags & VFLAG_VALLOC))
|
|
{
|
|
SetLastError( ERROR_INVALID_PARAMETER );
|
|
return FALSE;
|
|
}
|
|
|
|
/* Check the type */
|
|
|
|
if (type & MEM_SYSTEM)
|
|
{
|
|
view->flags |= VFLAG_SYSTEM;
|
|
type &= ~MEM_SYSTEM;
|
|
}
|
|
|
|
if ((type != MEM_DECOMMIT) && (type != MEM_RELEASE))
|
|
{
|
|
ERR("called with wrong free type flags (%08lx) !\n", type);
|
|
SetLastError( ERROR_INVALID_PARAMETER );
|
|
return FALSE;
|
|
}
|
|
|
|
/* Free the pages */
|
|
|
|
if (type == MEM_RELEASE)
|
|
{
|
|
if (size || (base != view->base))
|
|
{
|
|
SetLastError( ERROR_INVALID_PARAMETER );
|
|
return FALSE;
|
|
}
|
|
VIRTUAL_DeleteView( view );
|
|
return TRUE;
|
|
}
|
|
|
|
/* Decommit the pages by remapping zero-pages instead */
|
|
|
|
if (wine_anon_mmap( (LPVOID)base, size, VIRTUAL_GetUnixProt(0), MAP_FIXED ) != (LPVOID)base)
|
|
ERR( "Could not remap pages, expect trouble\n" );
|
|
return VIRTUAL_SetProt( view, base, size, 0 );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* VirtualLock (KERNEL32.@)
|
|
* Locks the specified region of virtual address space
|
|
*
|
|
* NOTE
|
|
* Always returns TRUE
|
|
*
|
|
* RETURNS
|
|
* TRUE: Success
|
|
* FALSE: Failure
|
|
*/
|
|
BOOL WINAPI VirtualLock(
|
|
LPVOID addr, /* [in] Address of first byte of range to lock */
|
|
DWORD size /* [in] Number of bytes in range to lock */
|
|
) {
|
|
return TRUE;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* VirtualUnlock (KERNEL32.@)
|
|
* Unlocks a range of pages in the virtual address space
|
|
*
|
|
* NOTE
|
|
* Always returns TRUE
|
|
*
|
|
* RETURNS
|
|
* TRUE: Success
|
|
* FALSE: Failure
|
|
*/
|
|
BOOL WINAPI VirtualUnlock(
|
|
LPVOID addr, /* [in] Address of first byte of range */
|
|
DWORD size /* [in] Number of bytes in range */
|
|
) {
|
|
return TRUE;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* VirtualProtect (KERNEL32.@)
|
|
* Changes the access protection on a region of committed pages
|
|
*
|
|
* RETURNS
|
|
* TRUE: Success
|
|
* FALSE: Failure
|
|
*/
|
|
BOOL WINAPI VirtualProtect(
|
|
LPVOID addr, /* [in] Address of region of committed pages */
|
|
DWORD size, /* [in] Size of region */
|
|
DWORD new_prot, /* [in] Desired access protection */
|
|
LPDWORD old_prot /* [out] Address of variable to get old protection */
|
|
) {
|
|
FILE_VIEW *view;
|
|
char *base;
|
|
UINT i;
|
|
BYTE vprot, *p;
|
|
DWORD prot;
|
|
|
|
TRACE("%p %08lx %08lx\n", addr, size, new_prot );
|
|
|
|
/* Fix the parameters */
|
|
|
|
size = ROUND_SIZE( addr, size );
|
|
base = ROUND_ADDR( addr, page_mask );
|
|
|
|
if (!(view = VIRTUAL_FindView( base )) ||
|
|
(base + size > (char *)view->base + view->size))
|
|
{
|
|
SetLastError( ERROR_INVALID_PARAMETER );
|
|
return FALSE;
|
|
}
|
|
|
|
/* Make sure all the pages are committed */
|
|
|
|
p = view->prot + ((base - (char *)view->base) >> page_shift);
|
|
VIRTUAL_GetWin32Prot( *p, &prot, NULL );
|
|
for (i = size >> page_shift; i; i--, p++)
|
|
{
|
|
if (!(*p & VPROT_COMMITTED))
|
|
{
|
|
SetLastError( ERROR_INVALID_PARAMETER );
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
if (old_prot) *old_prot = prot;
|
|
vprot = VIRTUAL_GetProt( new_prot ) | VPROT_COMMITTED;
|
|
return VIRTUAL_SetProt( view, base, size, vprot );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* VirtualProtectEx (KERNEL32.@)
|
|
* Changes the access protection on a region of committed pages in the
|
|
* virtual address space of a specified process
|
|
*
|
|
* RETURNS
|
|
* TRUE: Success
|
|
* FALSE: Failure
|
|
*/
|
|
BOOL WINAPI VirtualProtectEx(
|
|
HANDLE handle, /* [in] Handle of process */
|
|
LPVOID addr, /* [in] Address of region of committed pages */
|
|
DWORD size, /* [in] Size of region */
|
|
DWORD new_prot, /* [in] Desired access protection */
|
|
LPDWORD old_prot /* [out] Address of variable to get old protection */ )
|
|
{
|
|
if (MapProcessHandle( handle ) == GetCurrentProcessId())
|
|
return VirtualProtect( addr, size, new_prot, old_prot );
|
|
ERR("Unsupported on other process\n");
|
|
return FALSE;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* VirtualQuery (KERNEL32.@)
|
|
* Provides info about a range of pages in virtual address space
|
|
*
|
|
* RETURNS
|
|
* Number of bytes returned in information buffer
|
|
* or 0 if addr is >= 0xc0000000 (kernel space).
|
|
*/
|
|
DWORD WINAPI VirtualQuery(
|
|
LPCVOID addr, /* [in] Address of region */
|
|
LPMEMORY_BASIC_INFORMATION info, /* [out] Address of info buffer */
|
|
DWORD len /* [in] Size of buffer */
|
|
) {
|
|
FILE_VIEW *view;
|
|
char *base, *alloc_base = 0;
|
|
UINT size = 0;
|
|
|
|
if (addr >= (void*)0xc0000000) return 0;
|
|
|
|
base = ROUND_ADDR( addr, page_mask );
|
|
|
|
/* Find the view containing the address */
|
|
|
|
EnterCriticalSection(&csVirtual);
|
|
view = VIRTUAL_FirstView;
|
|
for (;;)
|
|
{
|
|
if (!view)
|
|
{
|
|
size = (char *)0xffff0000 - alloc_base;
|
|
break;
|
|
}
|
|
if ((char *)view->base > base)
|
|
{
|
|
size = (char *)view->base - alloc_base;
|
|
view = NULL;
|
|
break;
|
|
}
|
|
if ((char *)view->base + view->size > base)
|
|
{
|
|
alloc_base = view->base;
|
|
size = view->size;
|
|
break;
|
|
}
|
|
alloc_base = (char *)view->base + view->size;
|
|
view = view->next;
|
|
}
|
|
LeaveCriticalSection(&csVirtual);
|
|
|
|
/* Fill the info structure */
|
|
|
|
if (!view)
|
|
{
|
|
info->State = MEM_FREE;
|
|
info->Protect = 0;
|
|
info->AllocationProtect = 0;
|
|
info->Type = 0;
|
|
}
|
|
else
|
|
{
|
|
BYTE vprot = view->prot[(base - alloc_base) >> page_shift];
|
|
VIRTUAL_GetWin32Prot( vprot, &info->Protect, &info->State );
|
|
for (size = base - alloc_base; size < view->size; size += page_mask+1)
|
|
if (view->prot[size >> page_shift] != vprot) break;
|
|
info->AllocationProtect = view->protect;
|
|
info->Type = MEM_PRIVATE; /* FIXME */
|
|
}
|
|
|
|
info->BaseAddress = (LPVOID)base;
|
|
info->AllocationBase = (LPVOID)alloc_base;
|
|
info->RegionSize = size - (base - alloc_base);
|
|
return sizeof(*info);
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* VirtualQueryEx (KERNEL32.@)
|
|
* Provides info about a range of pages in virtual address space of a
|
|
* specified process
|
|
*
|
|
* RETURNS
|
|
* Number of bytes returned in information buffer
|
|
*/
|
|
DWORD WINAPI VirtualQueryEx(
|
|
HANDLE handle, /* [in] Handle of process */
|
|
LPCVOID addr, /* [in] Address of region */
|
|
LPMEMORY_BASIC_INFORMATION info, /* [out] Address of info buffer */
|
|
DWORD len /* [in] Size of buffer */ )
|
|
{
|
|
if (MapProcessHandle( handle ) == GetCurrentProcessId())
|
|
return VirtualQuery( addr, info, len );
|
|
ERR("Unsupported on other process\n");
|
|
return 0;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* IsBadReadPtr (KERNEL32.@)
|
|
*
|
|
* RETURNS
|
|
* FALSE: Process has read access to entire block
|
|
* TRUE: Otherwise
|
|
*/
|
|
BOOL WINAPI IsBadReadPtr(
|
|
LPCVOID ptr, /* [in] Address of memory block */
|
|
UINT size ) /* [in] Size of block */
|
|
{
|
|
if (!size) return FALSE; /* handle 0 size case w/o reference */
|
|
__TRY
|
|
{
|
|
volatile const char *p = ptr;
|
|
char dummy;
|
|
UINT count = size;
|
|
|
|
while (count > page_size)
|
|
{
|
|
dummy = *p;
|
|
p += page_size;
|
|
count -= page_size;
|
|
}
|
|
dummy = p[0];
|
|
dummy = p[count - 1];
|
|
}
|
|
__EXCEPT(page_fault) { return TRUE; }
|
|
__ENDTRY
|
|
return FALSE;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* IsBadWritePtr (KERNEL32.@)
|
|
*
|
|
* RETURNS
|
|
* FALSE: Process has write access to entire block
|
|
* TRUE: Otherwise
|
|
*/
|
|
BOOL WINAPI IsBadWritePtr(
|
|
LPVOID ptr, /* [in] Address of memory block */
|
|
UINT size ) /* [in] Size of block in bytes */
|
|
{
|
|
if (!size) return FALSE; /* handle 0 size case w/o reference */
|
|
__TRY
|
|
{
|
|
volatile char *p = ptr;
|
|
UINT count = size;
|
|
|
|
while (count > page_size)
|
|
{
|
|
*p |= 0;
|
|
p += page_size;
|
|
count -= page_size;
|
|
}
|
|
p[0] |= 0;
|
|
p[count - 1] |= 0;
|
|
}
|
|
__EXCEPT(page_fault) { return TRUE; }
|
|
__ENDTRY
|
|
return FALSE;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* IsBadHugeReadPtr (KERNEL32.@)
|
|
* RETURNS
|
|
* FALSE: Process has read access to entire block
|
|
* TRUE: Otherwise
|
|
*/
|
|
BOOL WINAPI IsBadHugeReadPtr(
|
|
LPCVOID ptr, /* [in] Address of memory block */
|
|
UINT size /* [in] Size of block */
|
|
) {
|
|
return IsBadReadPtr( ptr, size );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* IsBadHugeWritePtr (KERNEL32.@)
|
|
* RETURNS
|
|
* FALSE: Process has write access to entire block
|
|
* TRUE: Otherwise
|
|
*/
|
|
BOOL WINAPI IsBadHugeWritePtr(
|
|
LPVOID ptr, /* [in] Address of memory block */
|
|
UINT size /* [in] Size of block */
|
|
) {
|
|
return IsBadWritePtr( ptr, size );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* IsBadCodePtr (KERNEL32.@)
|
|
*
|
|
* RETURNS
|
|
* FALSE: Process has read access to specified memory
|
|
* TRUE: Otherwise
|
|
*/
|
|
BOOL WINAPI IsBadCodePtr( FARPROC ptr ) /* [in] Address of function */
|
|
{
|
|
return IsBadReadPtr( ptr, 1 );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* IsBadStringPtrA (KERNEL32.@)
|
|
*
|
|
* RETURNS
|
|
* FALSE: Read access to all bytes in string
|
|
* TRUE: Else
|
|
*/
|
|
BOOL WINAPI IsBadStringPtrA(
|
|
LPCSTR str, /* [in] Address of string */
|
|
UINT max ) /* [in] Maximum size of string */
|
|
{
|
|
__TRY
|
|
{
|
|
volatile const char *p = str;
|
|
while (p != str + max) if (!*p++) break;
|
|
}
|
|
__EXCEPT(page_fault) { return TRUE; }
|
|
__ENDTRY
|
|
return FALSE;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* IsBadStringPtrW (KERNEL32.@)
|
|
* See IsBadStringPtrA
|
|
*/
|
|
BOOL WINAPI IsBadStringPtrW( LPCWSTR str, UINT max )
|
|
{
|
|
__TRY
|
|
{
|
|
volatile const WCHAR *p = str;
|
|
while (p != str + max) if (!*p++) break;
|
|
}
|
|
__EXCEPT(page_fault) { return TRUE; }
|
|
__ENDTRY
|
|
return FALSE;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* CreateFileMappingA (KERNEL32.@)
|
|
* Creates a named or unnamed file-mapping object for the specified file
|
|
*
|
|
* RETURNS
|
|
* Handle: Success
|
|
* 0: Mapping object does not exist
|
|
* NULL: Failure
|
|
*/
|
|
HANDLE WINAPI CreateFileMappingA(
|
|
HANDLE hFile, /* [in] Handle of file to map */
|
|
SECURITY_ATTRIBUTES *sa, /* [in] Optional security attributes*/
|
|
DWORD protect, /* [in] Protection for mapping object */
|
|
DWORD size_high, /* [in] High-order 32 bits of object size */
|
|
DWORD size_low, /* [in] Low-order 32 bits of object size */
|
|
LPCSTR name /* [in] Name of file-mapping object */ )
|
|
{
|
|
WCHAR buffer[MAX_PATH];
|
|
|
|
if (!name) return CreateFileMappingW( hFile, sa, protect, size_high, size_low, NULL );
|
|
|
|
if (!MultiByteToWideChar( CP_ACP, 0, name, -1, buffer, MAX_PATH ))
|
|
{
|
|
SetLastError( ERROR_FILENAME_EXCED_RANGE );
|
|
return 0;
|
|
}
|
|
return CreateFileMappingW( hFile, sa, protect, size_high, size_low, buffer );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* CreateFileMappingW (KERNEL32.@)
|
|
* See CreateFileMappingA
|
|
*/
|
|
HANDLE WINAPI CreateFileMappingW( HANDLE hFile, LPSECURITY_ATTRIBUTES sa,
|
|
DWORD protect, DWORD size_high,
|
|
DWORD size_low, LPCWSTR name )
|
|
{
|
|
HANDLE ret;
|
|
BYTE vprot;
|
|
DWORD len = name ? strlenW(name) : 0;
|
|
|
|
/* Check parameters */
|
|
|
|
TRACE("(%x,%p,%08lx,%08lx%08lx,%s)\n",
|
|
hFile, sa, protect, size_high, size_low, debugstr_w(name) );
|
|
|
|
if (len > MAX_PATH)
|
|
{
|
|
SetLastError( ERROR_FILENAME_EXCED_RANGE );
|
|
return 0;
|
|
}
|
|
|
|
vprot = VIRTUAL_GetProt( protect );
|
|
if (protect & SEC_RESERVE)
|
|
{
|
|
if (hFile != INVALID_HANDLE_VALUE)
|
|
{
|
|
SetLastError( ERROR_INVALID_PARAMETER );
|
|
return 0;
|
|
}
|
|
}
|
|
else vprot |= VPROT_COMMITTED;
|
|
if (protect & SEC_NOCACHE) vprot |= VPROT_NOCACHE;
|
|
if (protect & SEC_IMAGE) vprot |= VPROT_IMAGE;
|
|
|
|
/* Create the server object */
|
|
|
|
if (hFile == INVALID_HANDLE_VALUE) hFile = 0;
|
|
SERVER_START_REQ( create_mapping )
|
|
{
|
|
req->file_handle = hFile;
|
|
req->size_high = size_high;
|
|
req->size_low = size_low;
|
|
req->protect = vprot;
|
|
req->inherit = (sa && (sa->nLength>=sizeof(*sa)) && sa->bInheritHandle);
|
|
wine_server_add_data( req, name, len * sizeof(WCHAR) );
|
|
SetLastError(0);
|
|
wine_server_call_err( req );
|
|
ret = reply->handle;
|
|
}
|
|
SERVER_END_REQ;
|
|
return ret;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* OpenFileMappingA (KERNEL32.@)
|
|
* Opens a named file-mapping object.
|
|
*
|
|
* RETURNS
|
|
* Handle: Success
|
|
* NULL: Failure
|
|
*/
|
|
HANDLE WINAPI OpenFileMappingA(
|
|
DWORD access, /* [in] Access mode */
|
|
BOOL inherit, /* [in] Inherit flag */
|
|
LPCSTR name ) /* [in] Name of file-mapping object */
|
|
{
|
|
WCHAR buffer[MAX_PATH];
|
|
|
|
if (!name) return OpenFileMappingW( access, inherit, NULL );
|
|
|
|
if (!MultiByteToWideChar( CP_ACP, 0, name, -1, buffer, MAX_PATH ))
|
|
{
|
|
SetLastError( ERROR_FILENAME_EXCED_RANGE );
|
|
return 0;
|
|
}
|
|
return OpenFileMappingW( access, inherit, buffer );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* OpenFileMappingW (KERNEL32.@)
|
|
* See OpenFileMappingA
|
|
*/
|
|
HANDLE WINAPI OpenFileMappingW( DWORD access, BOOL inherit, LPCWSTR name)
|
|
{
|
|
HANDLE ret;
|
|
DWORD len = name ? strlenW(name) : 0;
|
|
if (len >= MAX_PATH)
|
|
{
|
|
SetLastError( ERROR_FILENAME_EXCED_RANGE );
|
|
return 0;
|
|
}
|
|
SERVER_START_REQ( open_mapping )
|
|
{
|
|
req->access = access;
|
|
req->inherit = inherit;
|
|
wine_server_add_data( req, name, len * sizeof(WCHAR) );
|
|
wine_server_call_err( req );
|
|
ret = reply->handle;
|
|
}
|
|
SERVER_END_REQ;
|
|
return ret;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* MapViewOfFile (KERNEL32.@)
|
|
* Maps a view of a file into the address space
|
|
*
|
|
* RETURNS
|
|
* Starting address of mapped view
|
|
* NULL: Failure
|
|
*/
|
|
LPVOID WINAPI MapViewOfFile(
|
|
HANDLE mapping, /* [in] File-mapping object to map */
|
|
DWORD access, /* [in] Access mode */
|
|
DWORD offset_high, /* [in] High-order 32 bits of file offset */
|
|
DWORD offset_low, /* [in] Low-order 32 bits of file offset */
|
|
DWORD count /* [in] Number of bytes to map */
|
|
) {
|
|
return MapViewOfFileEx( mapping, access, offset_high,
|
|
offset_low, count, NULL );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* MapViewOfFileEx (KERNEL32.@)
|
|
* Maps a view of a file into the address space
|
|
*
|
|
* RETURNS
|
|
* Starting address of mapped view
|
|
* NULL: Failure
|
|
*/
|
|
LPVOID WINAPI MapViewOfFileEx(
|
|
HANDLE handle, /* [in] File-mapping object to map */
|
|
DWORD access, /* [in] Access mode */
|
|
DWORD offset_high, /* [in] High-order 32 bits of file offset */
|
|
DWORD offset_low, /* [in] Low-order 32 bits of file offset */
|
|
DWORD count, /* [in] Number of bytes to map */
|
|
LPVOID addr /* [in] Suggested starting address for mapped view */
|
|
) {
|
|
FILE_VIEW *view;
|
|
UINT size = 0;
|
|
int flags = MAP_PRIVATE;
|
|
int unix_handle = -1;
|
|
int prot, res;
|
|
void *base, *ptr = (void *)-1, *ret;
|
|
DWORD size_low, size_high, header_size, shared_size;
|
|
HANDLE shared_file;
|
|
BOOL removable;
|
|
|
|
/* Check parameters */
|
|
|
|
if ((offset_low & granularity_mask) ||
|
|
(addr && ((UINT_PTR)addr & granularity_mask)))
|
|
{
|
|
SetLastError( ERROR_INVALID_PARAMETER );
|
|
return NULL;
|
|
}
|
|
|
|
SERVER_START_REQ( get_mapping_info )
|
|
{
|
|
req->handle = handle;
|
|
res = wine_server_call_err( req );
|
|
prot = reply->protect;
|
|
base = reply->base;
|
|
size_low = reply->size_low;
|
|
size_high = reply->size_high;
|
|
header_size = reply->header_size;
|
|
shared_file = reply->shared_file;
|
|
shared_size = reply->shared_size;
|
|
removable = (reply->drive_type == DRIVE_REMOVABLE ||
|
|
reply->drive_type == DRIVE_CDROM);
|
|
}
|
|
SERVER_END_REQ;
|
|
if (res) goto error;
|
|
|
|
if ((unix_handle = FILE_GetUnixHandle( handle, 0 )) == -1) goto error;
|
|
|
|
if (prot & VPROT_IMAGE)
|
|
return map_image( handle, unix_handle, base, size_low, header_size,
|
|
shared_file, shared_size, removable );
|
|
|
|
|
|
if (size_high)
|
|
ERR("Sizes larger than 4Gb not supported\n");
|
|
|
|
if ((offset_low >= size_low) ||
|
|
(count > size_low - offset_low))
|
|
{
|
|
SetLastError( ERROR_INVALID_PARAMETER );
|
|
goto error;
|
|
}
|
|
if (count) size = ROUND_SIZE( offset_low, count );
|
|
else size = size_low - offset_low;
|
|
|
|
switch(access)
|
|
{
|
|
case FILE_MAP_ALL_ACCESS:
|
|
case FILE_MAP_WRITE:
|
|
case FILE_MAP_WRITE | FILE_MAP_READ:
|
|
if (!(prot & VPROT_WRITE))
|
|
{
|
|
SetLastError( ERROR_INVALID_PARAMETER );
|
|
goto error;
|
|
}
|
|
flags = MAP_SHARED;
|
|
/* fall through */
|
|
case FILE_MAP_READ:
|
|
case FILE_MAP_COPY:
|
|
case FILE_MAP_COPY | FILE_MAP_READ:
|
|
if (prot & VPROT_READ) break;
|
|
/* fall through */
|
|
default:
|
|
SetLastError( ERROR_INVALID_PARAMETER );
|
|
goto error;
|
|
}
|
|
|
|
/* FIXME: If a mapping is created with SEC_RESERVE and a process,
|
|
* which has a view of this mapping commits some pages, they will
|
|
* appear commited in all other processes, which have the same
|
|
* view created. Since we don`t support this yet, we create the
|
|
* whole mapping commited.
|
|
*/
|
|
prot |= VPROT_COMMITTED;
|
|
|
|
/* Reserve a properly aligned area */
|
|
|
|
if ((ptr = anon_mmap_aligned( addr, size, PROT_NONE, 0 )) == (void *)-1) goto error;
|
|
|
|
/* Map the file */
|
|
|
|
TRACE("handle=%x size=%x offset=%lx\n", handle, size, offset_low );
|
|
|
|
ret = VIRTUAL_mmap( unix_handle, ptr, size, offset_low, offset_high,
|
|
VIRTUAL_GetUnixProt( prot ), flags | MAP_FIXED, &removable );
|
|
if (ret != ptr)
|
|
{
|
|
ERR( "VIRTUAL_mmap %p %x %lx%08lx failed\n", ptr, size, offset_high, offset_low );
|
|
goto error;
|
|
}
|
|
if (removable) handle = 0; /* don't keep handle open on removable media */
|
|
|
|
if (!(view = VIRTUAL_CreateView( ptr, size, 0, prot, handle )))
|
|
{
|
|
SetLastError( ERROR_OUTOFMEMORY );
|
|
goto error;
|
|
}
|
|
if (unix_handle != -1) close( unix_handle );
|
|
return ptr;
|
|
|
|
error:
|
|
if (unix_handle != -1) close( unix_handle );
|
|
if (ptr != (void *)-1) munmap( ptr, size );
|
|
return NULL;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* FlushViewOfFile (KERNEL32.@)
|
|
* Writes to the disk a byte range within a mapped view of a file
|
|
*
|
|
* RETURNS
|
|
* TRUE: Success
|
|
* FALSE: Failure
|
|
*/
|
|
BOOL WINAPI FlushViewOfFile(
|
|
LPCVOID base, /* [in] Start address of byte range to flush */
|
|
DWORD cbFlush /* [in] Number of bytes in range */
|
|
) {
|
|
FILE_VIEW *view;
|
|
void *addr = ROUND_ADDR( base, page_mask );
|
|
|
|
TRACE("FlushViewOfFile at %p for %ld bytes\n",
|
|
base, cbFlush );
|
|
|
|
if (!(view = VIRTUAL_FindView( addr )))
|
|
{
|
|
SetLastError( ERROR_INVALID_PARAMETER );
|
|
return FALSE;
|
|
}
|
|
if (!cbFlush) cbFlush = view->size;
|
|
if (!msync( addr, cbFlush, MS_SYNC )) return TRUE;
|
|
SetLastError( ERROR_INVALID_PARAMETER );
|
|
return FALSE;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* UnmapViewOfFile (KERNEL32.@)
|
|
* Unmaps a mapped view of a file.
|
|
*
|
|
* NOTES
|
|
* Should addr be an LPCVOID?
|
|
*
|
|
* RETURNS
|
|
* TRUE: Success
|
|
* FALSE: Failure
|
|
*/
|
|
BOOL WINAPI UnmapViewOfFile(
|
|
LPVOID addr /* [in] Address where mapped view begins */
|
|
) {
|
|
FILE_VIEW *view;
|
|
void *base = ROUND_ADDR( addr, page_mask );
|
|
if (!(view = VIRTUAL_FindView( base )) || (base != view->base))
|
|
{
|
|
SetLastError( ERROR_INVALID_PARAMETER );
|
|
return FALSE;
|
|
}
|
|
VIRTUAL_DeleteView( view );
|
|
return TRUE;
|
|
}
|