1873 lines
60 KiB
C
1873 lines
60 KiB
C
/*
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* Win32 virtual memory functions
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*
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* Copyright 1997, 2002 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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#ifdef HAVE_UNISTD_H
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# include <unistd.h>
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#endif
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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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#define NONAMELESSUNION
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#define NONAMELESSSTRUCT
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#include "ntstatus.h"
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#include "thread.h"
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#include "winternl.h"
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#include "winioctl.h"
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#include "wine/library.h"
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#include "wine/server.h"
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#include "wine/list.h"
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#include "wine/debug.h"
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#include "ntdll_misc.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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#ifndef MAP_NORESERVE
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#define MAP_NORESERVE 0
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#endif
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/* File view */
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typedef struct file_view
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{
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struct list entry; /* Entry in global view list */
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void *base; /* Base address */
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UINT size; /* Size in bytes */
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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 flags; /* Allocation flags (VFLAG_*) */
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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 /* system view (underlying mmap not under our control) */
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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 struct list views_list = LIST_INIT(views_list);
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static CRITICAL_SECTION csVirtual;
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static CRITICAL_SECTION_DEBUG critsect_debug =
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{
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0, 0, &csVirtual,
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{ &critsect_debug.ProcessLocksList, &critsect_debug.ProcessLocksList },
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0, 0, { 0, (DWORD)(__FILE__ ": csVirtual") }
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};
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static CRITICAL_SECTION csVirtual = { &critsect_debug, -1, 0, 0, 0, 0 };
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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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/* Note: these are Windows limits, you cannot change them. */
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# define ADDRESS_SPACE_LIMIT ((void *)0xc0000000) /* top of the total available address space */
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# define USER_SPACE_LIMIT ((void *)0x80000000) /* top of the user address space */
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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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# define ADDRESS_SPACE_LIMIT 0 /* no limit needed on other platforms */
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# define USER_SPACE_LIMIT 0 /* no limit needed on other platforms */
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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 void *user_space_limit = USER_SPACE_LIMIT;
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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_WRITECOPY) ? 'W' : ((prot & VPROT_WRITE) ? '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( " %p\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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struct list *ptr;
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DPRINTF( "\nDump of all virtual memory views:\n\n" );
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RtlEnterCriticalSection(&csVirtual);
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LIST_FOR_EACH( ptr, &views_list )
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{
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VIRTUAL_DumpView( LIST_ENTRY( ptr, struct file_view, entry ) );
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}
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RtlLeaveCriticalSection(&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. The csVirtual section must be held by caller.
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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 struct file_view *VIRTUAL_FindView( const void *addr ) /* [in] Address */
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{
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struct list *ptr;
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LIST_FOR_EACH( ptr, &views_list )
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{
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struct file_view *view = LIST_ENTRY( ptr, struct file_view, entry );
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if (view->base > addr) break;
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if ((const char*)view->base + view->size > (const char*)addr) return view;
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}
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return NULL;
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}
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/***********************************************************************
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* find_view_range
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*
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* Find the first view overlapping at least part of the specified range.
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* The csVirtual section must be held by caller.
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*/
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static struct file_view *find_view_range( const void *addr, size_t size )
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{
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struct list *ptr;
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LIST_FOR_EACH( ptr, &views_list )
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{
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struct file_view *view = LIST_ENTRY( ptr, struct file_view, entry );
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if ((const char *)view->base >= (const char *)addr + size) break;
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if ((const char *)view->base + view->size > (const char *)addr) return view;
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}
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return NULL;
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}
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/***********************************************************************
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* add_reserved_area
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*
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* Add a reserved area to the list maintained by libwine.
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* The csVirtual section must be held by caller.
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*/
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static void add_reserved_area( void *addr, size_t size )
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{
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TRACE( "adding %p-%p\n", addr, (char *)addr + size );
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if (addr < user_space_limit)
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{
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/* unmap the part of the area that is below the limit */
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assert( (char *)addr + size > (char *)user_space_limit );
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munmap( addr, (char *)user_space_limit - (char *)addr );
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size -= (char *)user_space_limit - (char *)addr;
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addr = user_space_limit;
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}
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/* blow away existing mappings */
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wine_anon_mmap( addr, size, PROT_NONE, MAP_NORESERVE | MAP_FIXED );
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wine_mmap_add_reserved_area( addr, size );
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}
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/***********************************************************************
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* remove_reserved_area
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*
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* Remove a reserved area from the list maintained by libwine.
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* The csVirtual section must be held by caller.
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*/
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static void remove_reserved_area( void *addr, size_t size )
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{
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struct list *ptr;
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LIST_FOR_EACH( ptr, &views_list )
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{
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struct file_view *view = LIST_ENTRY( ptr, struct file_view, entry );
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if ((char *)view->base >= (char *)addr + size) break;
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if ((char *)view->base + view->size <= (char *)addr) continue;
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/* now we have an overlapping view */
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if (view->base > addr)
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{
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wine_mmap_remove_reserved_area( addr, (char *)view->base - (char *)addr, TRUE );
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size -= (char *)view->base - (char *)addr;
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addr = view->base;
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}
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if ((char *)view->base + view->size >= (char *)addr + size)
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{
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/* view covers all the remaining area */
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wine_mmap_remove_reserved_area( addr, size, FALSE );
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size = 0;
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break;
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}
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else /* view covers only part of the area */
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{
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wine_mmap_remove_reserved_area( addr, (char *)view->base + view->size - (char *)addr, FALSE );
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size -= (char *)view->base + view->size - (char *)addr;
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addr = (char *)view->base + view->size;
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}
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}
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/* remove remaining space */
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if (size) wine_mmap_remove_reserved_area( addr, size, TRUE );
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}
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/***********************************************************************
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* is_beyond_limit
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*
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* Check if an address range goes beyond a given limit.
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*/
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static inline int is_beyond_limit( void *addr, size_t size, void *limit )
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{
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return (limit && (addr >= limit || (char *)addr + size > (char *)limit));
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}
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/***********************************************************************
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* unmap_area
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*
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* Unmap an area, or simply replace it by an empty mapping if it is
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* in a reserved area. The csVirtual section must be held by caller.
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*/
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static inline void unmap_area( void *addr, size_t size )
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{
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if (wine_mmap_is_in_reserved_area( addr, size ))
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wine_anon_mmap( addr, size, PROT_NONE, MAP_NORESERVE | MAP_FIXED );
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else
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munmap( addr, size );
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}
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/***********************************************************************
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* delete_view
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*
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* Deletes a view. The csVirtual section must be held by caller.
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*/
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static void delete_view( struct file_view *view ) /* [in] View */
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{
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if (!(view->flags & VFLAG_SYSTEM)) unmap_area( view->base, view->size );
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list_remove( &view->entry );
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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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* create_view
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*
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* Create a view. The csVirtual section must be held by caller.
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*/
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static NTSTATUS create_view( struct file_view **view_ret, void *base, size_t size, BYTE vprot )
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{
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struct file_view *view;
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struct list *ptr;
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assert( !((unsigned int)base & page_mask) );
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assert( !(size & page_mask) );
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/* Create the view structure */
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if (!(view = malloc( sizeof(*view) + (size >> page_shift) - 1 ))) return STATUS_NO_MEMORY;
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view->base = base;
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view->size = size;
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view->flags = 0;
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view->mapping = 0;
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view->protect = vprot;
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view->handlerProc = NULL;
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memset( view->prot, vprot, size >> page_shift );
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/* Insert it in the linked list */
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LIST_FOR_EACH( ptr, &views_list )
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{
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struct file_view *next = LIST_ENTRY( ptr, struct file_view, entry );
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if (next->base > base) break;
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}
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list_add_before( ptr, &view->entry );
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/* Check for overlapping views. This can happen if the previous view
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* was a system view that got unmapped behind our back. In that case
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* we recover by simply deleting it. */
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if ((ptr = list_prev( &views_list, &view->entry )) != NULL)
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{
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struct file_view *prev = LIST_ENTRY( ptr, struct file_view, entry );
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if ((char *)prev->base + prev->size > (char *)base)
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{
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TRACE( "overlapping prev view %p-%p for %p-%p\n",
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prev->base, (char *)prev->base + prev->size,
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base, (char *)base + view->size );
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assert( prev->flags & VFLAG_SYSTEM );
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delete_view( prev );
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}
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}
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if ((ptr = list_next( &views_list, &view->entry )) != NULL)
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{
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struct file_view *next = LIST_ENTRY( ptr, struct file_view, entry );
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if ((char *)base + view->size > (char *)next->base)
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{
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TRACE( "overlapping next view %p-%p for %p-%p\n",
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next->base, (char *)next->base + next->size,
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base, (char *)base + view->size );
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assert( next->flags & VFLAG_SYSTEM );
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delete_view( next );
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}
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}
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*view_ret = view;
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VIRTUAL_DEBUG_DUMP_VIEW( view );
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return STATUS_SUCCESS;
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}
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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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/***********************************************************************
|
|
* VIRTUAL_GetWin32Prot
|
|
*
|
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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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static void VIRTUAL_GetWin32Prot(
|
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BYTE vprot, /* [in] Page protection flags */
|
|
DWORD *protect, /* [out] Location to store Win32 protection flags */
|
|
DWORD *state ) /* [out] Location to store mem state flag */
|
|
{
|
|
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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|
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if (vprot & VPROT_GUARD) *protect = PAGE_NOACCESS;
|
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}
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|
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if (state) *state = (vprot & VPROT_COMMITTED) ? MEM_COMMIT : MEM_RESERVE;
|
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}
|
|
|
|
|
|
/***********************************************************************
|
|
* VIRTUAL_GetProt
|
|
*
|
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* Build page protections from Win32 flags.
|
|
*
|
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* RETURNS
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* Value of page protection flags
|
|
*/
|
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static BYTE VIRTUAL_GetProt( DWORD protect ) /* [in] Win32 protection flags */
|
|
{
|
|
BYTE vprot;
|
|
|
|
switch(protect & 0xff)
|
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{
|
|
case PAGE_READONLY:
|
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vprot = VPROT_READ;
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break;
|
|
case PAGE_READWRITE:
|
|
vprot = VPROT_READ | VPROT_WRITE;
|
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break;
|
|
case PAGE_WRITECOPY:
|
|
/* MSDN CreateFileMapping() states that if PAGE_WRITECOPY is given,
|
|
* that the hFile must have been opened with GENERIC_READ and
|
|
* GENERIC_WRITE access. This is WRONG as tests show that you
|
|
* only need GENERIC_READ access (at least for Win9x,
|
|
* FIXME: what about NT?). Thus, we don't put VPROT_WRITE in
|
|
* PAGE_WRITECOPY and PAGE_EXECUTE_WRITECOPY.
|
|
*/
|
|
vprot = VPROT_READ | VPROT_WRITECOPY;
|
|
break;
|
|
case PAGE_EXECUTE:
|
|
vprot = VPROT_EXEC;
|
|
break;
|
|
case PAGE_EXECUTE_READ:
|
|
vprot = VPROT_EXEC | VPROT_READ;
|
|
break;
|
|
case PAGE_EXECUTE_READWRITE:
|
|
vprot = VPROT_EXEC | VPROT_READ | VPROT_WRITE;
|
|
break;
|
|
case PAGE_EXECUTE_WRITECOPY:
|
|
/* See comment for PAGE_WRITECOPY above */
|
|
vprot = VPROT_EXEC | VPROT_READ | VPROT_WRITECOPY;
|
|
break;
|
|
case PAGE_NOACCESS:
|
|
default:
|
|
vprot = 0;
|
|
break;
|
|
}
|
|
if (protect & PAGE_GUARD) vprot |= VPROT_GUARD;
|
|
if (protect & PAGE_NOCACHE) vprot |= VPROT_NOCACHE;
|
|
return vprot;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* VIRTUAL_SetProt
|
|
*
|
|
* Change the protection of a range of pages.
|
|
*
|
|
* RETURNS
|
|
* TRUE: Success
|
|
* FALSE: Failure
|
|
*/
|
|
static BOOL VIRTUAL_SetProt( FILE_VIEW *view, /* [in] Pointer to view */
|
|
void *base, /* [in] Starting address */
|
|
UINT size, /* [in] Size in bytes */
|
|
BYTE vprot ) /* [in] Protections to use */
|
|
{
|
|
TRACE("%p-%p %s\n",
|
|
base, (char *)base + size - 1, VIRTUAL_GetProtStr( vprot ) );
|
|
|
|
if (mprotect( base, size, VIRTUAL_GetUnixProt(vprot) ))
|
|
return FALSE; /* FIXME: last error */
|
|
|
|
memset( view->prot + (((char *)base - (char *)view->base) >> page_shift),
|
|
vprot, size >> page_shift );
|
|
VIRTUAL_DEBUG_DUMP_VIEW( view );
|
|
return TRUE;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* map_view
|
|
*
|
|
* Create a view and mmap the corresponding memory area.
|
|
* The csVirtual section must be held by caller.
|
|
*/
|
|
static NTSTATUS map_view( struct file_view **view_ret, void *base, size_t size, BYTE vprot )
|
|
{
|
|
void *ptr;
|
|
NTSTATUS status;
|
|
|
|
if (base)
|
|
{
|
|
if (is_beyond_limit( base, size, ADDRESS_SPACE_LIMIT ))
|
|
return STATUS_WORKING_SET_LIMIT_RANGE;
|
|
|
|
switch (wine_mmap_is_in_reserved_area( base, size ))
|
|
{
|
|
case -1: /* partially in a reserved area */
|
|
return STATUS_CONFLICTING_ADDRESSES;
|
|
|
|
case 0: /* not in a reserved area, do a normal allocation */
|
|
if ((ptr = wine_anon_mmap( base, size, VIRTUAL_GetUnixProt(vprot), 0 )) == (void *)-1)
|
|
{
|
|
if (errno == ENOMEM) return STATUS_NO_MEMORY;
|
|
return STATUS_INVALID_PARAMETER;
|
|
}
|
|
if (ptr != base)
|
|
{
|
|
/* We couldn't get the address we wanted */
|
|
if (is_beyond_limit( ptr, size, user_space_limit )) add_reserved_area( ptr, size );
|
|
else munmap( ptr, size );
|
|
return STATUS_CONFLICTING_ADDRESSES;
|
|
}
|
|
break;
|
|
|
|
default:
|
|
case 1: /* in a reserved area, make sure the address is available */
|
|
if (find_view_range( base, size )) return STATUS_CONFLICTING_ADDRESSES;
|
|
/* replace the reserved area by our mapping */
|
|
if ((ptr = wine_anon_mmap( base, size, VIRTUAL_GetUnixProt(vprot), MAP_FIXED )) != base)
|
|
return STATUS_INVALID_PARAMETER;
|
|
break;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
size_t view_size = size + granularity_mask + 1;
|
|
|
|
for (;;)
|
|
{
|
|
if ((ptr = wine_anon_mmap( NULL, view_size, VIRTUAL_GetUnixProt(vprot), 0 )) == (void *)-1)
|
|
{
|
|
if (errno == ENOMEM) return STATUS_NO_MEMORY;
|
|
return STATUS_INVALID_PARAMETER;
|
|
}
|
|
/* if we got something beyond the user limit, unmap it and retry */
|
|
if (is_beyond_limit( ptr, view_size, user_space_limit )) add_reserved_area( ptr, view_size );
|
|
else break;
|
|
}
|
|
|
|
/* Release the extra memory while keeping the range
|
|
* starting on the granularity boundary. */
|
|
if ((unsigned int)ptr & granularity_mask)
|
|
{
|
|
unsigned int extra = granularity_mask + 1 - ((unsigned int)ptr & granularity_mask);
|
|
munmap( ptr, extra );
|
|
ptr = (char *)ptr + extra;
|
|
view_size -= extra;
|
|
}
|
|
if (view_size > size)
|
|
munmap( (char *)ptr + size, view_size - size );
|
|
}
|
|
|
|
status = create_view( view_ret, ptr, size, vprot );
|
|
if (status != STATUS_SUCCESS) unmap_area( ptr, size );
|
|
return status;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* 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, off_t offset )
|
|
{
|
|
#if defined(linux) && defined(__i386__) && defined(__GNUC__)
|
|
if (!(offset >> 32) && (offset & 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;
|
|
|
|
__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)
|
|
: "memory" );
|
|
if (ret < 0 && ret > -4096)
|
|
{
|
|
errno = -ret;
|
|
ret = -1;
|
|
}
|
|
return (void *)ret;
|
|
}
|
|
#endif
|
|
return mmap( addr, length, prot, flags, fd, offset );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* map_file_into_view
|
|
*
|
|
* Wrapper for mmap() to map a file into a view, falling back to read if mmap fails.
|
|
* The csVirtual section must be held by caller.
|
|
*/
|
|
static NTSTATUS map_file_into_view( struct file_view *view, int fd, size_t start, size_t size,
|
|
off_t offset, BYTE vprot, BOOL removable )
|
|
{
|
|
void *ptr;
|
|
int prot = VIRTUAL_GetUnixProt( vprot );
|
|
BOOL shared_write = (vprot & VPROT_WRITE) != 0;
|
|
|
|
assert( start < view->size );
|
|
assert( start + size <= view->size );
|
|
|
|
/* only try mmap if media is not removable (or if we require write access) */
|
|
if (!removable || shared_write)
|
|
{
|
|
int flags = MAP_FIXED | (shared_write ? MAP_SHARED : MAP_PRIVATE);
|
|
|
|
if (unaligned_mmap( (char *)view->base + start, size, prot, flags, fd, offset ) != (void *)-1)
|
|
goto done;
|
|
|
|
/* 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 FILE_GetNtStatus();
|
|
if (shared_write) return FILE_GetNtStatus(); /* we cannot fake shared write mappings */
|
|
}
|
|
|
|
/* Reserve the memory with an anonymous mmap */
|
|
ptr = wine_anon_mmap( (char *)view->base + start, size, PROT_READ | PROT_WRITE, MAP_FIXED );
|
|
if (ptr == (void *)-1) return FILE_GetNtStatus();
|
|
/* Now read in the file */
|
|
pread( fd, ptr, size, offset );
|
|
if (prot != (PROT_READ|PROT_WRITE)) mprotect( ptr, size, prot ); /* Set the right protection */
|
|
done:
|
|
memset( view->prot + (start >> page_shift), vprot, size >> page_shift );
|
|
return STATUS_SUCCESS;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* decommit_view
|
|
*
|
|
* Decommit some pages of a given view.
|
|
* The csVirtual section must be held by caller.
|
|
*/
|
|
static NTSTATUS decommit_pages( struct file_view *view, size_t start, size_t size )
|
|
{
|
|
if (wine_anon_mmap( (char *)view->base + start, size, PROT_NONE, MAP_FIXED ) != (void *)-1)
|
|
{
|
|
BYTE *p = view->prot + (start >> page_shift);
|
|
size >>= page_shift;
|
|
while (size--) *p++ &= ~VPROT_COMMITTED;
|
|
return STATUS_SUCCESS;
|
|
}
|
|
return FILE_GetNtStatus();
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* 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;
|
|
|
|
TRACE_(module)( "relocating from %p-%p to %p-%p\n",
|
|
base - delta, base - delta + total_size, base, base + total_size );
|
|
|
|
for (rel = (IMAGE_BASE_RELOCATION *)(base + dir->VirtualAddress);
|
|
((char *)rel < base + dir->VirtualAddress + dir->Size) && rel->SizeOfBlock;
|
|
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",
|
|
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 NTSTATUS map_image( HANDLE hmapping, int fd, char *base, DWORD total_size,
|
|
DWORD header_size, int shared_fd, BOOL removable, PVOID *addr_ptr )
|
|
{
|
|
IMAGE_DOS_HEADER *dos;
|
|
IMAGE_NT_HEADERS *nt;
|
|
IMAGE_SECTION_HEADER *sec;
|
|
IMAGE_DATA_DIRECTORY *imports;
|
|
NTSTATUS status = STATUS_CONFLICTING_ADDRESSES;
|
|
int i;
|
|
off_t pos;
|
|
struct file_view *view = NULL;
|
|
char *ptr;
|
|
|
|
/* zero-map the whole range */
|
|
|
|
RtlEnterCriticalSection( &csVirtual );
|
|
|
|
if (base >= (char *)0x110000) /* make sure the DOS area remains free */
|
|
status = map_view( &view, base, total_size,
|
|
VPROT_COMMITTED | VPROT_READ | VPROT_EXEC | VPROT_WRITECOPY | VPROT_IMAGE );
|
|
|
|
if (status == STATUS_CONFLICTING_ADDRESSES)
|
|
status = map_view( &view, NULL, total_size,
|
|
VPROT_COMMITTED | VPROT_READ | VPROT_EXEC | VPROT_WRITECOPY | VPROT_IMAGE );
|
|
|
|
if (status != STATUS_SUCCESS) goto error;
|
|
|
|
ptr = view->base;
|
|
TRACE_(module)( "mapped PE file at %p-%p\n", ptr, ptr + total_size );
|
|
|
|
/* map the header */
|
|
|
|
status = STATUS_INVALID_IMAGE_FORMAT; /* generic error */
|
|
if (map_file_into_view( view, fd, 0, header_size, 0, VPROT_COMMITTED | VPROT_READ,
|
|
removable ) != STATUS_SUCCESS) 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;
|
|
}
|
|
|
|
/* 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, (int)pos, sec->SizeOfRawData,
|
|
size, sec->Characteristics );
|
|
if (map_file_into_view( view, shared_fd, sec->VirtualAddress, size, pos,
|
|
VPROT_COMMITTED | VPROT_READ | PROT_WRITE,
|
|
FALSE ) != STATUS_SUCCESS)
|
|
{
|
|
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)
|
|
{
|
|
UINT_PTR base = imports->VirtualAddress & ~page_mask;
|
|
UINT_PTR end = base + ROUND_SIZE( imports->VirtualAddress, imports->Size );
|
|
if (end > sec->VirtualAddress + size) end = sec->VirtualAddress + size;
|
|
if (end > base)
|
|
map_file_into_view( view, shared_fd, base, end - base,
|
|
pos + (base - sec->VirtualAddress),
|
|
VPROT_COMMITTED | VPROT_READ | VPROT_WRITECOPY,
|
|
FALSE );
|
|
}
|
|
pos += size;
|
|
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 );
|
|
|
|
if ((sec->Characteristics & IMAGE_SCN_CNT_UNINITIALIZED_DATA) &&
|
|
!(sec->Characteristics & IMAGE_SCN_CNT_INITIALIZED_DATA)) continue;
|
|
if (!sec->PointerToRawData || !sec->SizeOfRawData) continue;
|
|
|
|
/* Note: if the section is not aligned properly map_file_into_view will magically
|
|
* fall back to read(), so we don't need to check anything here.
|
|
*/
|
|
if (map_file_into_view( view, fd, sec->VirtualAddress, sec->SizeOfRawData, sec->PointerToRawData,
|
|
VPROT_COMMITTED | VPROT_READ | VPROT_WRITECOPY,
|
|
removable ) != STATUS_SUCCESS)
|
|
{
|
|
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("Image was mapped at %p: standard load address for a Win32 program (0x00400000) not available\n", ptr);
|
|
ERR("Do you have exec-shield or prelink active?\n");
|
|
} else
|
|
ERR( "FATAL: Need to relocate module from addr %lx, but there are no relocation records\n",
|
|
nt->OptionalHeader.ImageBase );
|
|
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 ))
|
|
{
|
|
goto error;
|
|
}
|
|
}
|
|
|
|
if (!removable) /* don't keep handle open on removable media */
|
|
NtDuplicateObject( GetCurrentProcess(), hmapping,
|
|
GetCurrentProcess(), &view->mapping,
|
|
0, 0, DUPLICATE_SAME_ACCESS );
|
|
|
|
/* 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_READ|VPROT_WRITECOPY;
|
|
if (sec->Characteristics & IMAGE_SCN_MEM_EXECUTE) vprot |= VPROT_EXEC;
|
|
VIRTUAL_SetProt( view, ptr + sec->VirtualAddress, size, vprot );
|
|
}
|
|
RtlLeaveCriticalSection( &csVirtual );
|
|
|
|
*addr_ptr = ptr;
|
|
return STATUS_SUCCESS;
|
|
|
|
error:
|
|
if (view) delete_view( view );
|
|
RtlLeaveCriticalSection( &csVirtual );
|
|
return status;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* is_current_process
|
|
*
|
|
* Check whether a process handle is for the current process.
|
|
*/
|
|
BOOL is_current_process( HANDLE handle )
|
|
{
|
|
BOOL ret = FALSE;
|
|
|
|
if (handle == GetCurrentProcess()) return TRUE;
|
|
SERVER_START_REQ( get_process_info )
|
|
{
|
|
req->handle = handle;
|
|
if (!wine_server_call( req ))
|
|
ret = ((DWORD)reply->pid == GetCurrentProcessId());
|
|
}
|
|
SERVER_END_REQ;
|
|
return ret;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* virtual_init
|
|
*/
|
|
void virtual_init(void)
|
|
{
|
|
#ifndef page_mask
|
|
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;
|
|
BOOL ret = FALSE;
|
|
|
|
RtlEnterCriticalSection( &csVirtual );
|
|
if ((view = VIRTUAL_FindView( addr )))
|
|
{
|
|
view->handlerProc = proc;
|
|
view->handlerArg = arg;
|
|
ret = TRUE;
|
|
}
|
|
RtlLeaveCriticalSection( &csVirtual );
|
|
return ret;
|
|
}
|
|
|
|
/***********************************************************************
|
|
* VIRTUAL_HandleFault
|
|
*/
|
|
DWORD VIRTUAL_HandleFault( LPCVOID addr )
|
|
{
|
|
FILE_VIEW *view;
|
|
DWORD ret = EXCEPTION_ACCESS_VIOLATION;
|
|
|
|
RtlEnterCriticalSection( &csVirtual );
|
|
if ((view = VIRTUAL_FindView( addr )))
|
|
{
|
|
if (view->handlerProc)
|
|
{
|
|
HANDLERPROC proc = view->handlerProc;
|
|
void *arg = view->handlerArg;
|
|
RtlLeaveCriticalSection( &csVirtual );
|
|
if (proc( arg, addr )) ret = 0; /* handled */
|
|
return ret;
|
|
}
|
|
else
|
|
{
|
|
BYTE vprot = view->prot[((const char *)addr - (const char *)view->base) >> page_shift];
|
|
void *page = (void *)((UINT_PTR)addr & ~page_mask);
|
|
char *stack = NtCurrentTeb()->Tib.StackLimit;
|
|
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 page? */
|
|
if (((const char *)addr >= stack) && ((const char *)addr < stack + (page_mask+1)))
|
|
ret = STATUS_STACK_OVERFLOW;
|
|
}
|
|
}
|
|
RtlLeaveCriticalSection( &csVirtual );
|
|
return ret;
|
|
}
|
|
|
|
/***********************************************************************
|
|
* VIRTUAL_HasMapping
|
|
*
|
|
* Check if the specified view has an associated file mapping.
|
|
*/
|
|
BOOL VIRTUAL_HasMapping( LPCVOID addr )
|
|
{
|
|
FILE_VIEW *view;
|
|
BOOL ret = FALSE;
|
|
|
|
RtlEnterCriticalSection( &csVirtual );
|
|
if ((view = VIRTUAL_FindView( addr ))) ret = (view->mapping != 0);
|
|
RtlLeaveCriticalSection( &csVirtual );
|
|
return ret;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* VIRTUAL_UseLargeAddressSpace
|
|
*
|
|
* Increase the address space size for apps that support it.
|
|
*/
|
|
void VIRTUAL_UseLargeAddressSpace(void)
|
|
{
|
|
if (user_space_limit >= ADDRESS_SPACE_LIMIT) return;
|
|
RtlEnterCriticalSection( &csVirtual );
|
|
remove_reserved_area( user_space_limit, (char *)ADDRESS_SPACE_LIMIT - (char *)user_space_limit );
|
|
user_space_limit = ADDRESS_SPACE_LIMIT;
|
|
RtlLeaveCriticalSection( &csVirtual );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* NtAllocateVirtualMemory (NTDLL.@)
|
|
* ZwAllocateVirtualMemory (NTDLL.@)
|
|
*/
|
|
NTSTATUS WINAPI NtAllocateVirtualMemory( HANDLE process, PVOID *ret, PVOID addr,
|
|
ULONG *size_ptr, ULONG type, ULONG protect )
|
|
{
|
|
void *base;
|
|
BYTE vprot;
|
|
DWORD size = *size_ptr;
|
|
NTSTATUS status = STATUS_SUCCESS;
|
|
struct file_view *view;
|
|
|
|
TRACE("%p %p %08lx %lx %08lx\n", process, addr, size, type, protect );
|
|
|
|
if (!size) return STATUS_INVALID_PARAMETER;
|
|
|
|
if (!is_current_process( process ))
|
|
{
|
|
ERR("Unsupported on other process\n");
|
|
return STATUS_ACCESS_DENIED;
|
|
}
|
|
|
|
/* Round parameters to a page boundary */
|
|
|
|
if (size > 0x7fc00000) return STATUS_WORKING_SET_LIMIT_RANGE; /* 2Gb - 4Mb */
|
|
|
|
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;
|
|
|
|
/* disallow low 64k, wrap-around and kernel space */
|
|
if (((char *)base <= (char *)granularity_mask) ||
|
|
((char *)base + size < (char *)base) ||
|
|
is_beyond_limit( base, size, ADDRESS_SPACE_LIMIT ))
|
|
return STATUS_INVALID_PARAMETER;
|
|
}
|
|
else
|
|
{
|
|
base = NULL;
|
|
size = (size + page_mask) & ~page_mask;
|
|
}
|
|
|
|
if (type & MEM_TOP_DOWN) {
|
|
/* FIXME: MEM_TOP_DOWN allocates the largest possible address. */
|
|
WARN("MEM_TOP_DOWN ignored\n");
|
|
type &= ~MEM_TOP_DOWN;
|
|
}
|
|
|
|
/* Compute the alloc type flags */
|
|
|
|
if (!(type & MEM_SYSTEM))
|
|
{
|
|
if (!(type & (MEM_COMMIT | MEM_RESERVE)) || (type & ~(MEM_COMMIT | MEM_RESERVE)))
|
|
{
|
|
WARN("called with wrong alloc type flags (%08lx) !\n", type);
|
|
return STATUS_INVALID_PARAMETER;
|
|
}
|
|
}
|
|
vprot = VIRTUAL_GetProt( protect );
|
|
if (type & MEM_COMMIT) vprot |= VPROT_COMMITTED;
|
|
|
|
/* Reserve the memory */
|
|
|
|
RtlEnterCriticalSection( &csVirtual );
|
|
|
|
if (type & MEM_SYSTEM)
|
|
{
|
|
if (type & MEM_IMAGE) vprot |= VPROT_IMAGE;
|
|
status = create_view( &view, base, size, vprot | VPROT_COMMITTED );
|
|
if (status == STATUS_SUCCESS)
|
|
{
|
|
view->flags |= VFLAG_VALLOC | VFLAG_SYSTEM;
|
|
base = view->base;
|
|
}
|
|
}
|
|
else if ((type & MEM_RESERVE) || !base)
|
|
{
|
|
status = map_view( &view, base, size, vprot );
|
|
if (status == STATUS_SUCCESS)
|
|
{
|
|
view->flags |= VFLAG_VALLOC;
|
|
base = view->base;
|
|
}
|
|
}
|
|
else /* commit the pages */
|
|
{
|
|
if (!(view = VIRTUAL_FindView( base )) ||
|
|
((char *)base + size > (char *)view->base + view->size)) status = STATUS_NOT_MAPPED_VIEW;
|
|
else if (!VIRTUAL_SetProt( view, base, size, vprot )) status = STATUS_ACCESS_DENIED;
|
|
}
|
|
|
|
RtlLeaveCriticalSection( &csVirtual );
|
|
|
|
if (status == STATUS_SUCCESS)
|
|
{
|
|
*ret = base;
|
|
*size_ptr = size;
|
|
}
|
|
return status;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* NtFreeVirtualMemory (NTDLL.@)
|
|
* ZwFreeVirtualMemory (NTDLL.@)
|
|
*/
|
|
NTSTATUS WINAPI NtFreeVirtualMemory( HANDLE process, PVOID *addr_ptr, ULONG *size_ptr, ULONG type )
|
|
{
|
|
FILE_VIEW *view;
|
|
char *base;
|
|
NTSTATUS status = STATUS_SUCCESS;
|
|
LPVOID addr = *addr_ptr;
|
|
DWORD size = *size_ptr;
|
|
|
|
TRACE("%p %p %08lx %lx\n", process, addr, size, type );
|
|
|
|
if (!is_current_process( process ))
|
|
{
|
|
ERR("Unsupported on other process\n");
|
|
return STATUS_ACCESS_DENIED;
|
|
}
|
|
|
|
/* Fix the parameters */
|
|
|
|
size = ROUND_SIZE( addr, size );
|
|
base = ROUND_ADDR( addr, page_mask );
|
|
|
|
RtlEnterCriticalSection(&csVirtual);
|
|
|
|
if (!(view = VIRTUAL_FindView( base )) ||
|
|
(base + size > (char *)view->base + view->size) ||
|
|
!(view->flags & VFLAG_VALLOC))
|
|
{
|
|
status = STATUS_INVALID_PARAMETER;
|
|
}
|
|
else if (type & MEM_SYSTEM)
|
|
{
|
|
/* return the values that the caller should use to unmap the area */
|
|
*addr_ptr = view->base;
|
|
*size_ptr = view->size;
|
|
view->flags |= VFLAG_SYSTEM;
|
|
delete_view( view );
|
|
}
|
|
else if (type == MEM_RELEASE)
|
|
{
|
|
/* Free the pages */
|
|
|
|
if (size || (base != view->base)) status = STATUS_INVALID_PARAMETER;
|
|
else
|
|
{
|
|
delete_view( view );
|
|
*addr_ptr = base;
|
|
*size_ptr = size;
|
|
}
|
|
}
|
|
else if (type == MEM_DECOMMIT)
|
|
{
|
|
status = decommit_pages( view, base - (char *)view->base, size );
|
|
if (status == STATUS_SUCCESS)
|
|
{
|
|
*addr_ptr = base;
|
|
*size_ptr = size;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
WARN("called with wrong free type flags (%08lx) !\n", type);
|
|
status = STATUS_INVALID_PARAMETER;
|
|
}
|
|
|
|
RtlLeaveCriticalSection(&csVirtual);
|
|
return status;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* NtProtectVirtualMemory (NTDLL.@)
|
|
* ZwProtectVirtualMemory (NTDLL.@)
|
|
*/
|
|
NTSTATUS WINAPI NtProtectVirtualMemory( HANDLE process, PVOID *addr_ptr, ULONG *size_ptr,
|
|
ULONG new_prot, ULONG *old_prot )
|
|
{
|
|
FILE_VIEW *view;
|
|
NTSTATUS status = STATUS_SUCCESS;
|
|
char *base;
|
|
UINT i;
|
|
BYTE vprot, *p;
|
|
DWORD prot, size = *size_ptr;
|
|
LPVOID addr = *addr_ptr;
|
|
|
|
TRACE("%p %p %08lx %08lx\n", process, addr, size, new_prot );
|
|
|
|
if (!is_current_process( process ))
|
|
{
|
|
ERR("Unsupported on other process\n");
|
|
return STATUS_ACCESS_DENIED;
|
|
}
|
|
|
|
/* Fix the parameters */
|
|
|
|
size = ROUND_SIZE( addr, size );
|
|
base = ROUND_ADDR( addr, page_mask );
|
|
|
|
RtlEnterCriticalSection( &csVirtual );
|
|
|
|
if (!(view = VIRTUAL_FindView( base )) || (base + size > (char *)view->base + view->size))
|
|
{
|
|
status = STATUS_INVALID_PARAMETER;
|
|
}
|
|
else
|
|
{
|
|
/* 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))
|
|
{
|
|
status = STATUS_NOT_COMMITTED;
|
|
break;
|
|
}
|
|
}
|
|
if (!i)
|
|
{
|
|
if (old_prot) *old_prot = prot;
|
|
vprot = VIRTUAL_GetProt( new_prot ) | VPROT_COMMITTED;
|
|
if (!VIRTUAL_SetProt( view, base, size, vprot )) status = STATUS_ACCESS_DENIED;
|
|
}
|
|
}
|
|
RtlLeaveCriticalSection( &csVirtual );
|
|
|
|
if (status == STATUS_SUCCESS)
|
|
{
|
|
*addr_ptr = base;
|
|
*size_ptr = size;
|
|
}
|
|
return status;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* NtQueryVirtualMemory (NTDLL.@)
|
|
* ZwQueryVirtualMemory (NTDLL.@)
|
|
*/
|
|
NTSTATUS WINAPI NtQueryVirtualMemory( HANDLE process, LPCVOID addr,
|
|
MEMORY_INFORMATION_CLASS info_class, PVOID buffer,
|
|
ULONG len, ULONG *res_len )
|
|
{
|
|
FILE_VIEW *view;
|
|
char *base, *alloc_base = 0;
|
|
struct list *ptr;
|
|
UINT size = 0;
|
|
MEMORY_BASIC_INFORMATION *info = buffer;
|
|
|
|
if (info_class != MemoryBasicInformation) return STATUS_INVALID_INFO_CLASS;
|
|
if (ADDRESS_SPACE_LIMIT && addr >= ADDRESS_SPACE_LIMIT)
|
|
return STATUS_WORKING_SET_LIMIT_RANGE;
|
|
|
|
if (!is_current_process( process ))
|
|
{
|
|
ERR("Unsupported on other process\n");
|
|
return STATUS_ACCESS_DENIED;
|
|
}
|
|
|
|
base = ROUND_ADDR( addr, page_mask );
|
|
|
|
/* Find the view containing the address */
|
|
|
|
RtlEnterCriticalSection(&csVirtual);
|
|
ptr = list_head( &views_list );
|
|
for (;;)
|
|
{
|
|
if (!ptr)
|
|
{
|
|
/* make the address space end at the user limit, except if
|
|
* the last view was mapped beyond that */
|
|
if (alloc_base < (char *)user_space_limit)
|
|
{
|
|
if (user_space_limit && base >= (char *)user_space_limit)
|
|
{
|
|
RtlLeaveCriticalSection( &csVirtual );
|
|
return STATUS_WORKING_SET_LIMIT_RANGE;
|
|
}
|
|
size = (char *)user_space_limit - alloc_base;
|
|
}
|
|
else size = (char *)ADDRESS_SPACE_LIMIT - alloc_base;
|
|
view = NULL;
|
|
break;
|
|
}
|
|
view = LIST_ENTRY( ptr, struct file_view, entry );
|
|
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;
|
|
ptr = list_next( &views_list, ptr );
|
|
}
|
|
|
|
/* 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;
|
|
VIRTUAL_GetWin32Prot( view->protect, &info->AllocationProtect, NULL );
|
|
if (view->protect & VPROT_IMAGE) info->Type = MEM_IMAGE;
|
|
else if (view->flags & VFLAG_VALLOC) info->Type = MEM_PRIVATE;
|
|
else info->Type = MEM_MAPPED;
|
|
}
|
|
RtlLeaveCriticalSection(&csVirtual);
|
|
|
|
info->BaseAddress = (LPVOID)base;
|
|
info->AllocationBase = (LPVOID)alloc_base;
|
|
info->RegionSize = size - (base - alloc_base);
|
|
if (res_len) *res_len = sizeof(*info);
|
|
return STATUS_SUCCESS;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* NtLockVirtualMemory (NTDLL.@)
|
|
* ZwLockVirtualMemory (NTDLL.@)
|
|
*/
|
|
NTSTATUS WINAPI NtLockVirtualMemory( HANDLE process, PVOID *addr, ULONG *size, ULONG unknown )
|
|
{
|
|
if (!is_current_process( process ))
|
|
{
|
|
ERR("Unsupported on other process\n");
|
|
return STATUS_ACCESS_DENIED;
|
|
}
|
|
return STATUS_SUCCESS;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* NtUnlockVirtualMemory (NTDLL.@)
|
|
* ZwUnlockVirtualMemory (NTDLL.@)
|
|
*/
|
|
NTSTATUS WINAPI NtUnlockVirtualMemory( HANDLE process, PVOID *addr, ULONG *size, ULONG unknown )
|
|
{
|
|
if (!is_current_process( process ))
|
|
{
|
|
ERR("Unsupported on other process\n");
|
|
return STATUS_ACCESS_DENIED;
|
|
}
|
|
return STATUS_SUCCESS;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* NtCreateSection (NTDLL.@)
|
|
* ZwCreateSection (NTDLL.@)
|
|
*/
|
|
NTSTATUS WINAPI NtCreateSection( HANDLE *handle, ACCESS_MASK access, const OBJECT_ATTRIBUTES *attr,
|
|
const LARGE_INTEGER *size, ULONG protect,
|
|
ULONG sec_flags, HANDLE file )
|
|
{
|
|
NTSTATUS ret;
|
|
BYTE vprot;
|
|
DWORD len = attr->ObjectName ? attr->ObjectName->Length : 0;
|
|
|
|
/* Check parameters */
|
|
|
|
if (len > MAX_PATH*sizeof(WCHAR)) return STATUS_NAME_TOO_LONG;
|
|
|
|
vprot = VIRTUAL_GetProt( protect );
|
|
if (sec_flags & SEC_RESERVE)
|
|
{
|
|
if (file) return STATUS_INVALID_PARAMETER;
|
|
}
|
|
else vprot |= VPROT_COMMITTED;
|
|
if (sec_flags & SEC_NOCACHE) vprot |= VPROT_NOCACHE;
|
|
if (sec_flags & SEC_IMAGE) vprot |= VPROT_IMAGE;
|
|
|
|
/* Create the server object */
|
|
|
|
SERVER_START_REQ( create_mapping )
|
|
{
|
|
req->file_handle = file;
|
|
req->size_high = size ? size->u.HighPart : 0;
|
|
req->size_low = size ? size->u.LowPart : 0;
|
|
req->protect = vprot;
|
|
req->access = access;
|
|
req->inherit = (attr->Attributes & OBJ_INHERIT) != 0;
|
|
if (len) wine_server_add_data( req, attr->ObjectName->Buffer, len );
|
|
ret = wine_server_call( req );
|
|
*handle = reply->handle;
|
|
}
|
|
SERVER_END_REQ;
|
|
return ret;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* NtOpenSection (NTDLL.@)
|
|
* ZwOpenSection (NTDLL.@)
|
|
*/
|
|
NTSTATUS WINAPI NtOpenSection( HANDLE *handle, ACCESS_MASK access, const OBJECT_ATTRIBUTES *attr )
|
|
{
|
|
NTSTATUS ret;
|
|
DWORD len = attr->ObjectName->Length;
|
|
|
|
if (len > MAX_PATH*sizeof(WCHAR)) return STATUS_NAME_TOO_LONG;
|
|
|
|
SERVER_START_REQ( open_mapping )
|
|
{
|
|
req->access = access;
|
|
req->inherit = (attr->Attributes & OBJ_INHERIT) != 0;
|
|
wine_server_add_data( req, attr->ObjectName->Buffer, len );
|
|
if (!(ret = wine_server_call( req ))) *handle = reply->handle;
|
|
}
|
|
SERVER_END_REQ;
|
|
return ret;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* NtMapViewOfSection (NTDLL.@)
|
|
* ZwMapViewOfSection (NTDLL.@)
|
|
*/
|
|
NTSTATUS WINAPI NtMapViewOfSection( HANDLE handle, HANDLE process, PVOID *addr_ptr, ULONG zero_bits,
|
|
ULONG commit_size, const LARGE_INTEGER *offset, ULONG *size_ptr,
|
|
SECTION_INHERIT inherit, ULONG alloc_type, ULONG protect )
|
|
{
|
|
IO_STATUS_BLOCK io;
|
|
FILE_FS_DEVICE_INFORMATION device_info;
|
|
NTSTATUS res;
|
|
UINT size = 0;
|
|
int unix_handle = -1;
|
|
int prot;
|
|
void *base;
|
|
struct file_view *view;
|
|
DWORD size_low, size_high, header_size, shared_size;
|
|
HANDLE shared_file;
|
|
BOOL removable = FALSE;
|
|
|
|
TRACE("handle=%p process=%p addr=%p off=%lx%08lx size=%x access=%lx\n",
|
|
handle, process, *addr_ptr, offset->u.HighPart, offset->u.LowPart, size, protect );
|
|
|
|
if (!is_current_process( process ))
|
|
{
|
|
ERR("Unsupported on other process\n");
|
|
return STATUS_ACCESS_DENIED;
|
|
}
|
|
|
|
/* Check parameters */
|
|
|
|
if ((offset->u.LowPart & granularity_mask) ||
|
|
(*addr_ptr && ((UINT_PTR)*addr_ptr & granularity_mask)))
|
|
return STATUS_INVALID_PARAMETER;
|
|
|
|
SERVER_START_REQ( get_mapping_info )
|
|
{
|
|
req->handle = handle;
|
|
res = wine_server_call( 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;
|
|
}
|
|
SERVER_END_REQ;
|
|
if (res) return res;
|
|
|
|
if ((res = wine_server_handle_to_fd( handle, 0, &unix_handle, NULL ))) return res;
|
|
|
|
if (NtQueryVolumeInformationFile( handle, &io, &device_info, sizeof(device_info),
|
|
FileFsDeviceInformation ) == STATUS_SUCCESS)
|
|
removable = device_info.Characteristics & FILE_REMOVABLE_MEDIA;
|
|
|
|
if (prot & VPROT_IMAGE)
|
|
{
|
|
if (shared_file)
|
|
{
|
|
int shared_fd;
|
|
|
|
if ((res = wine_server_handle_to_fd( shared_file, GENERIC_READ, &shared_fd,
|
|
NULL ))) goto done;
|
|
res = map_image( handle, unix_handle, base, size_low, header_size,
|
|
shared_fd, removable, addr_ptr );
|
|
wine_server_release_fd( shared_file, shared_fd );
|
|
NtClose( shared_file );
|
|
}
|
|
else
|
|
{
|
|
res = map_image( handle, unix_handle, base, size_low, header_size,
|
|
-1, removable, addr_ptr );
|
|
}
|
|
wine_server_release_fd( handle, unix_handle );
|
|
if (!res) *size_ptr = size_low;
|
|
return res;
|
|
}
|
|
|
|
if (size_high)
|
|
ERR("Sizes larger than 4Gb not supported\n");
|
|
|
|
if ((offset->u.LowPart >= size_low) ||
|
|
(*size_ptr > size_low - offset->u.LowPart))
|
|
{
|
|
res = STATUS_INVALID_PARAMETER;
|
|
goto done;
|
|
}
|
|
if (*size_ptr) size = ROUND_SIZE( offset->u.LowPart, *size_ptr );
|
|
else size = size_low - offset->u.LowPart;
|
|
|
|
switch(protect)
|
|
{
|
|
case PAGE_NOACCESS:
|
|
break;
|
|
case PAGE_READWRITE:
|
|
case PAGE_EXECUTE_READWRITE:
|
|
if (!(prot & VPROT_WRITE))
|
|
{
|
|
res = STATUS_INVALID_PARAMETER;
|
|
goto done;
|
|
}
|
|
removable = FALSE;
|
|
/* fall through */
|
|
case PAGE_READONLY:
|
|
case PAGE_WRITECOPY:
|
|
case PAGE_EXECUTE:
|
|
case PAGE_EXECUTE_READ:
|
|
case PAGE_EXECUTE_WRITECOPY:
|
|
if (prot & VPROT_READ) break;
|
|
/* fall through */
|
|
default:
|
|
res = STATUS_INVALID_PARAMETER;
|
|
goto done;
|
|
}
|
|
|
|
/* 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 */
|
|
|
|
RtlEnterCriticalSection( &csVirtual );
|
|
|
|
res = map_view( &view, *addr_ptr, size, prot );
|
|
if (res)
|
|
{
|
|
RtlLeaveCriticalSection( &csVirtual );
|
|
goto done;
|
|
}
|
|
|
|
/* Map the file */
|
|
|
|
TRACE("handle=%p size=%x offset=%lx%08lx\n",
|
|
handle, size, offset->u.HighPart, offset->u.LowPart );
|
|
|
|
res = map_file_into_view( view, unix_handle, 0, size, offset->QuadPart, prot, removable );
|
|
if (res == STATUS_SUCCESS)
|
|
{
|
|
if (!removable) /* don't keep handle open on removable media */
|
|
NtDuplicateObject( GetCurrentProcess(), handle,
|
|
GetCurrentProcess(), &view->mapping,
|
|
0, 0, DUPLICATE_SAME_ACCESS );
|
|
|
|
*addr_ptr = view->base;
|
|
*size_ptr = size;
|
|
}
|
|
else
|
|
{
|
|
ERR( "map_file_into_view %p %x %lx%08lx failed\n",
|
|
view->base, size, offset->u.HighPart, offset->u.LowPart );
|
|
delete_view( view );
|
|
}
|
|
|
|
RtlLeaveCriticalSection( &csVirtual );
|
|
|
|
done:
|
|
wine_server_release_fd( handle, unix_handle );
|
|
return res;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* NtUnmapViewOfSection (NTDLL.@)
|
|
* ZwUnmapViewOfSection (NTDLL.@)
|
|
*/
|
|
NTSTATUS WINAPI NtUnmapViewOfSection( HANDLE process, PVOID addr )
|
|
{
|
|
FILE_VIEW *view;
|
|
NTSTATUS status = STATUS_INVALID_PARAMETER;
|
|
void *base = ROUND_ADDR( addr, page_mask );
|
|
|
|
if (!is_current_process( process ))
|
|
{
|
|
ERR("Unsupported on other process\n");
|
|
return STATUS_ACCESS_DENIED;
|
|
}
|
|
RtlEnterCriticalSection( &csVirtual );
|
|
if ((view = VIRTUAL_FindView( base )) && (base == view->base))
|
|
{
|
|
delete_view( view );
|
|
status = STATUS_SUCCESS;
|
|
}
|
|
RtlLeaveCriticalSection( &csVirtual );
|
|
return status;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* NtFlushVirtualMemory (NTDLL.@)
|
|
* ZwFlushVirtualMemory (NTDLL.@)
|
|
*/
|
|
NTSTATUS WINAPI NtFlushVirtualMemory( HANDLE process, LPCVOID *addr_ptr,
|
|
ULONG *size_ptr, ULONG unknown )
|
|
{
|
|
FILE_VIEW *view;
|
|
NTSTATUS status = STATUS_SUCCESS;
|
|
void *addr = ROUND_ADDR( *addr_ptr, page_mask );
|
|
|
|
if (!is_current_process( process ))
|
|
{
|
|
ERR("Unsupported on other process\n");
|
|
return STATUS_ACCESS_DENIED;
|
|
}
|
|
RtlEnterCriticalSection( &csVirtual );
|
|
if (!(view = VIRTUAL_FindView( addr ))) status = STATUS_INVALID_PARAMETER;
|
|
else
|
|
{
|
|
if (!*size_ptr) *size_ptr = view->size;
|
|
*addr_ptr = addr;
|
|
if (msync( addr, *size_ptr, MS_SYNC )) status = STATUS_NOT_MAPPED_DATA;
|
|
}
|
|
RtlLeaveCriticalSection( &csVirtual );
|
|
return status;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* NtReadVirtualMemory (NTDLL.@)
|
|
* ZwReadVirtualMemory (NTDLL.@)
|
|
*/
|
|
NTSTATUS WINAPI NtReadVirtualMemory( HANDLE process, const void *addr, void *buffer,
|
|
SIZE_T size, SIZE_T *bytes_read )
|
|
{
|
|
NTSTATUS status;
|
|
|
|
SERVER_START_REQ( read_process_memory )
|
|
{
|
|
req->handle = process;
|
|
req->addr = (void *)addr;
|
|
wine_server_set_reply( req, buffer, size );
|
|
if ((status = wine_server_call( req ))) size = 0;
|
|
}
|
|
SERVER_END_REQ;
|
|
if (bytes_read) *bytes_read = size;
|
|
return status;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* NtWriteVirtualMemory (NTDLL.@)
|
|
* ZwWriteVirtualMemory (NTDLL.@)
|
|
*/
|
|
NTSTATUS WINAPI NtWriteVirtualMemory( HANDLE process, void *addr, const void *buffer,
|
|
SIZE_T size, SIZE_T *bytes_written )
|
|
{
|
|
static const unsigned int zero;
|
|
unsigned int first_offset, last_offset, first_mask, last_mask;
|
|
NTSTATUS status;
|
|
|
|
if (!size) return STATUS_INVALID_PARAMETER;
|
|
|
|
/* compute the mask for the first int */
|
|
first_mask = ~0;
|
|
first_offset = (unsigned int)addr % sizeof(int);
|
|
memset( &first_mask, 0, first_offset );
|
|
|
|
/* compute the mask for the last int */
|
|
last_offset = (size + first_offset) % sizeof(int);
|
|
last_mask = 0;
|
|
memset( &last_mask, 0xff, last_offset ? last_offset : sizeof(int) );
|
|
|
|
SERVER_START_REQ( write_process_memory )
|
|
{
|
|
req->handle = process;
|
|
req->addr = (char *)addr - first_offset;
|
|
req->first_mask = first_mask;
|
|
req->last_mask = last_mask;
|
|
if (first_offset) wine_server_add_data( req, &zero, first_offset );
|
|
wine_server_add_data( req, buffer, size );
|
|
if (last_offset) wine_server_add_data( req, &zero, sizeof(int) - last_offset );
|
|
|
|
if ((status = wine_server_call( req ))) size = 0;
|
|
}
|
|
SERVER_END_REQ;
|
|
if (bytes_written) *bytes_written = size;
|
|
return status;
|
|
}
|