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advapi32: Add support for the KEY_WOW64_32KEY flag in RegOpenKey on 64-bit.

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This commit is contained in:
Alexandre Julliard 2010-04-02 12:14:21 +02:00
parent 68a5c34731
commit 21da080dbd
1 changed files with 51 additions and 2 deletions
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53
dlls/advapi32/registry.c
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@ -174,6 +174,55 @@ static NTSTATUS create_key( HKEY *retkey, ACCESS_MASK access, OBJECT_ATTRIBUTES
return status;
}
/* wrapper for NtOpenKey to handle Wow6432 nodes */
static NTSTATUS open_key( HKEY *retkey, ACCESS_MASK access, OBJECT_ATTRIBUTES *attr )
{
NTSTATUS status;
BOOL force_wow32 = is_win64 && (access & KEY_WOW64_32KEY);
HANDLE subkey, root = attr->RootDirectory;
WCHAR *buffer = attr->ObjectName->Buffer;
DWORD attrs, pos = 0, i = 0, len = attr->ObjectName->Length / sizeof(WCHAR);
UNICODE_STRING str;
if (!force_wow32) return NtOpenKey( (HANDLE *)retkey, access, attr );
if (len && buffer[0] == '\\') return STATUS_OBJECT_PATH_INVALID;
while (i < len && buffer[i] != '\\') i++;
attrs = attr->Attributes;
attr->Attributes &= ~OBJ_OPENLINK;
attr->ObjectName = &str;
while (i < len)
{
str.Buffer = buffer + pos;
str.Length = (i - pos) * sizeof(WCHAR);
if (force_wow32 && pos)
{
if (is_wow6432node( &str )) force_wow32 = FALSE;
else if ((subkey = open_wow6432node( attr->RootDirectory, &str )))
{
if (attr->RootDirectory != root) NtClose( attr->RootDirectory );
attr->RootDirectory = subkey;
force_wow32 = FALSE;
}
}
status = NtOpenKey( &subkey, access, attr );
if (attr->RootDirectory != root) NtClose( attr->RootDirectory );
if (status) return status;
attr->RootDirectory = subkey;
while (i < len && buffer[i] == '\\') i++;
pos = i;
while (i < len && buffer[i] != '\\') i++;
}
str.Buffer = buffer + pos;
str.Length = (i - pos) * sizeof(WCHAR);
attr->Attributes = attrs;
status = NtOpenKey( (PHANDLE)retkey, access, attr );
if (attr->RootDirectory != root) NtClose( attr->RootDirectory );
return status;
}
/* create one of the HKEY_* special root keys */
static HKEY create_special_root_hkey( HKEY hkey, DWORD access )
{
@ -404,7 +453,7 @@ LSTATUS WINAPI RegOpenKeyExW( HKEY hkey, LPCWSTR name, DWORD options, REGSAM acc
attr.SecurityQualityOfService = NULL;
if (options & REG_OPTION_OPEN_LINK) attr.Attributes |= OBJ_OPENLINK;
RtlInitUnicodeString( &nameW, name );
return RtlNtStatusToDosError( NtOpenKey( (PHANDLE)retkey, access, &attr ) );
return RtlNtStatusToDosError( open_key( retkey, access, &attr ) );
}
@ -455,7 +504,7 @@ LSTATUS WINAPI RegOpenKeyExA( HKEY hkey, LPCSTR name, DWORD options, REGSAM acce
if (!(status = RtlAnsiStringToUnicodeString( &NtCurrentTeb()->StaticUnicodeString,
&nameA, FALSE )))
{
status = NtOpenKey( (PHANDLE)retkey, access, &attr );
status = open_key( retkey, access, &attr );
}
return RtlNtStatusToDosError( status );
}