mirror of
git://source.winehq.org/git/wine.git
synced 2024-11-01 22:50:08 +00:00
685 lines
20 KiB
C
685 lines
20 KiB
C
/*
|
|
* Win32 virtual memory functions
|
|
*
|
|
* Copyright 1997 Alexandre Julliard
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* This library is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with this library; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*/
|
|
|
|
#include "config.h"
|
|
#include "wine/port.h"
|
|
|
|
#include <fcntl.h>
|
|
#include <stdarg.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <sys/types.h>
|
|
#ifdef HAVE_UNISTD_H
|
|
# include <unistd.h>
|
|
#endif
|
|
|
|
#define NONAMELESSUNION
|
|
#define NONAMELESSSTRUCT
|
|
#include "ntstatus.h"
|
|
#include "windef.h"
|
|
#include "winbase.h"
|
|
#include "winnls.h"
|
|
#include "winreg.h"
|
|
#include "winternl.h"
|
|
#include "winerror.h"
|
|
#include "wine/exception.h"
|
|
#include "excpt.h"
|
|
#include "wine/debug.h"
|
|
|
|
WINE_DEFAULT_DEBUG_CHANNEL(virtual);
|
|
WINE_DECLARE_DEBUG_CHANNEL(seh);
|
|
|
|
static unsigned int page_size;
|
|
|
|
/* filter for page-fault exceptions */
|
|
static WINE_EXCEPTION_FILTER(page_fault)
|
|
{
|
|
if (GetExceptionCode() == EXCEPTION_ACCESS_VIOLATION)
|
|
return EXCEPTION_EXECUTE_HANDLER;
|
|
return EXCEPTION_CONTINUE_SEARCH;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* 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 */
|
|
SIZE_T size, /* [in] Size of region */
|
|
DWORD type, /* [in] Type of allocation */
|
|
DWORD protect)/* [in] Type of access protection */
|
|
{
|
|
return VirtualAllocEx( GetCurrentProcess(), addr, size, type, protect );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* 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 */
|
|
SIZE_T size, /* [in] Size of region */
|
|
DWORD type, /* [in] Type of allocation */
|
|
DWORD protect ) /* [in] Type of access protection */
|
|
{
|
|
LPVOID ret = addr;
|
|
NTSTATUS status;
|
|
|
|
if ((status = NtAllocateVirtualMemory( hProcess, &ret, 0, &size, type, protect )))
|
|
{
|
|
SetLastError( RtlNtStatusToDosError(status) );
|
|
ret = NULL;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* 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 */
|
|
SIZE_T size, /* [in] Size of region */
|
|
DWORD type /* [in] Type of operation */
|
|
) {
|
|
return VirtualFreeEx( GetCurrentProcess(), addr, size, type );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* VirtualFreeEx (KERNEL32.@)
|
|
* Release or decommits a region of pages in virtual address space.
|
|
*
|
|
* RETURNS
|
|
* TRUE: Success
|
|
* FALSE: Failure
|
|
*/
|
|
BOOL WINAPI VirtualFreeEx( HANDLE process, LPVOID addr, SIZE_T size, DWORD type )
|
|
{
|
|
NTSTATUS status = NtFreeVirtualMemory( process, &addr, &size, type );
|
|
if (status) SetLastError( RtlNtStatusToDosError(status) );
|
|
return !status;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* 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 */
|
|
SIZE_T size ) /* [in] Number of bytes in range to lock */
|
|
{
|
|
NTSTATUS status = NtLockVirtualMemory( GetCurrentProcess(), &addr, &size, 1 );
|
|
if (status) SetLastError( RtlNtStatusToDosError(status) );
|
|
return !status;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* 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 */
|
|
SIZE_T size ) /* [in] Number of bytes in range */
|
|
{
|
|
NTSTATUS status = NtUnlockVirtualMemory( GetCurrentProcess(), &addr, &size, 1 );
|
|
if (status) SetLastError( RtlNtStatusToDosError(status) );
|
|
return !status;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* 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 */
|
|
SIZE_T size, /* [in] Size of region */
|
|
DWORD new_prot, /* [in] Desired access protection */
|
|
LPDWORD old_prot /* [out] Address of variable to get old protection */
|
|
) {
|
|
return VirtualProtectEx( GetCurrentProcess(), addr, size, new_prot, old_prot );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* 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 process, /* [in] Handle of process */
|
|
LPVOID addr, /* [in] Address of region of committed pages */
|
|
SIZE_T size, /* [in] Size of region */
|
|
DWORD new_prot, /* [in] Desired access protection */
|
|
LPDWORD old_prot /* [out] Address of variable to get old protection */ )
|
|
{
|
|
NTSTATUS status = NtProtectVirtualMemory( process, &addr, &size, new_prot, old_prot );
|
|
if (status) SetLastError( RtlNtStatusToDosError(status) );
|
|
return !status;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* 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).
|
|
*/
|
|
SIZE_T WINAPI VirtualQuery(
|
|
LPCVOID addr, /* [in] Address of region */
|
|
PMEMORY_BASIC_INFORMATION info, /* [out] Address of info buffer */
|
|
SIZE_T len /* [in] Size of buffer */
|
|
) {
|
|
return VirtualQueryEx( GetCurrentProcess(), addr, info, len );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* 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
|
|
*/
|
|
SIZE_T WINAPI VirtualQueryEx(
|
|
HANDLE process, /* [in] Handle of process */
|
|
LPCVOID addr, /* [in] Address of region */
|
|
PMEMORY_BASIC_INFORMATION info, /* [out] Address of info buffer */
|
|
SIZE_T len /* [in] Size of buffer */ )
|
|
{
|
|
DWORD ret;
|
|
NTSTATUS status;
|
|
|
|
if ((status = NtQueryVirtualMemory( process, addr, MemoryBasicInformation, info, len, &ret )))
|
|
{
|
|
SetLastError( RtlNtStatusToDosError(status) );
|
|
ret = 0;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* 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 )
|
|
{
|
|
static const int sec_flags = SEC_FILE | SEC_IMAGE | SEC_RESERVE | SEC_COMMIT | SEC_NOCACHE;
|
|
|
|
HANDLE ret;
|
|
OBJECT_ATTRIBUTES attr;
|
|
UNICODE_STRING nameW;
|
|
NTSTATUS status;
|
|
DWORD access, sec_type;
|
|
LARGE_INTEGER size;
|
|
|
|
attr.Length = sizeof(attr);
|
|
attr.RootDirectory = 0;
|
|
attr.ObjectName = NULL;
|
|
attr.Attributes = (sa && sa->bInheritHandle) ? OBJ_INHERIT : 0;
|
|
attr.SecurityDescriptor = sa ? sa->lpSecurityDescriptor : NULL;
|
|
attr.SecurityQualityOfService = NULL;
|
|
|
|
if (name)
|
|
{
|
|
RtlInitUnicodeString( &nameW, name );
|
|
attr.ObjectName = &nameW;
|
|
}
|
|
|
|
sec_type = protect & sec_flags;
|
|
protect &= ~sec_flags;
|
|
if (!sec_type) sec_type = SEC_COMMIT;
|
|
|
|
switch(protect)
|
|
{
|
|
case 0:
|
|
protect = PAGE_READONLY; /* Win9x compatibility */
|
|
/* fall through */
|
|
case PAGE_READONLY:
|
|
case PAGE_WRITECOPY:
|
|
access = STANDARD_RIGHTS_REQUIRED | SECTION_QUERY | SECTION_MAP_READ;
|
|
break;
|
|
case PAGE_READWRITE:
|
|
access = STANDARD_RIGHTS_REQUIRED | SECTION_QUERY | SECTION_MAP_READ | SECTION_MAP_WRITE;
|
|
break;
|
|
default:
|
|
SetLastError( ERROR_INVALID_PARAMETER );
|
|
return 0;
|
|
}
|
|
|
|
if (hFile == INVALID_HANDLE_VALUE)
|
|
{
|
|
hFile = 0;
|
|
if (!size_low && !size_high)
|
|
{
|
|
SetLastError( ERROR_INVALID_PARAMETER );
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
size.u.LowPart = size_low;
|
|
size.u.HighPart = size_high;
|
|
|
|
status = NtCreateSection( &ret, access, &attr, &size, protect, sec_type, hFile );
|
|
SetLastError( RtlNtStatusToDosError(status) );
|
|
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)
|
|
{
|
|
OBJECT_ATTRIBUTES attr;
|
|
UNICODE_STRING nameW;
|
|
HANDLE ret;
|
|
NTSTATUS status;
|
|
|
|
if (!name)
|
|
{
|
|
SetLastError( ERROR_INVALID_PARAMETER );
|
|
return 0;
|
|
}
|
|
attr.Length = sizeof(attr);
|
|
attr.RootDirectory = 0;
|
|
attr.ObjectName = &nameW;
|
|
attr.Attributes = inherit ? OBJ_INHERIT : 0;
|
|
attr.SecurityDescriptor = NULL;
|
|
attr.SecurityQualityOfService = NULL;
|
|
RtlInitUnicodeString( &nameW, name );
|
|
|
|
if (access == FILE_MAP_COPY) access = FILE_MAP_READ;
|
|
|
|
if ((status = NtOpenSection( &ret, access, &attr )))
|
|
{
|
|
SetLastError( RtlNtStatusToDosError(status) );
|
|
ret = 0;
|
|
}
|
|
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 */
|
|
SIZE_T 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 */
|
|
SIZE_T count, /* [in] Number of bytes to map */
|
|
LPVOID addr /* [in] Suggested starting address for mapped view */
|
|
) {
|
|
NTSTATUS status;
|
|
LARGE_INTEGER offset;
|
|
ULONG protect;
|
|
|
|
offset.u.LowPart = offset_low;
|
|
offset.u.HighPart = offset_high;
|
|
|
|
if (access & FILE_MAP_WRITE) protect = PAGE_READWRITE;
|
|
else if (access & FILE_MAP_READ) protect = PAGE_READONLY;
|
|
else if (access & FILE_MAP_COPY) protect = PAGE_WRITECOPY;
|
|
else protect = PAGE_NOACCESS;
|
|
|
|
if ((status = NtMapViewOfSection( handle, GetCurrentProcess(), &addr, 0, 0, &offset,
|
|
&count, ViewShare, 0, protect )))
|
|
{
|
|
SetLastError( RtlNtStatusToDosError(status) );
|
|
addr = NULL;
|
|
}
|
|
return addr;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* 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 */
|
|
{
|
|
NTSTATUS status = NtUnmapViewOfSection( GetCurrentProcess(), addr );
|
|
if (status) SetLastError( RtlNtStatusToDosError(status) );
|
|
return !status;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* 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 */
|
|
SIZE_T size ) /* [in] Number of bytes in range */
|
|
{
|
|
NTSTATUS status = NtFlushVirtualMemory( GetCurrentProcess(), &base, &size, 0 );
|
|
if (status)
|
|
{
|
|
if (status == STATUS_NOT_MAPPED_DATA) status = STATUS_SUCCESS;
|
|
else SetLastError( RtlNtStatusToDosError(status) );
|
|
}
|
|
return !status;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* 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 */
|
|
if (!ptr) return TRUE;
|
|
|
|
if (!page_size) page_size = getpagesize();
|
|
__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)
|
|
{
|
|
TRACE_(seh)("%p caused page fault during read\n", ptr);
|
|
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 */
|
|
if (!ptr) return TRUE;
|
|
|
|
if (!page_size) page_size = getpagesize();
|
|
__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)
|
|
{
|
|
TRACE_(seh)("%p caused page fault during write\n", ptr);
|
|
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 */
|
|
{
|
|
if (!str) return TRUE;
|
|
|
|
__TRY
|
|
{
|
|
volatile const char *p = str;
|
|
while (p != str + max) if (!*p++) break;
|
|
}
|
|
__EXCEPT(page_fault)
|
|
{
|
|
TRACE_(seh)("%p caused page fault during read\n", str);
|
|
return TRUE;
|
|
}
|
|
__ENDTRY
|
|
return FALSE;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* IsBadStringPtrW (KERNEL32.@)
|
|
* See IsBadStringPtrA
|
|
*/
|
|
BOOL WINAPI IsBadStringPtrW( LPCWSTR str, UINT max )
|
|
{
|
|
if (!str) return TRUE;
|
|
|
|
__TRY
|
|
{
|
|
volatile const WCHAR *p = str;
|
|
while (p != str + max) if (!*p++) break;
|
|
}
|
|
__EXCEPT(page_fault)
|
|
{
|
|
TRACE_(seh)("%p caused page fault during read\n", str);
|
|
return TRUE;
|
|
}
|
|
__ENDTRY
|
|
return FALSE;
|
|
}
|