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advapi32: Create keys recursively if necessary.

This commit is contained in:
Alexandre Julliard 2010-03-01 14:12:12 +01:00
parent ea3f48ff11
commit 972f96d6c4
1 changed files with 37 additions and 6 deletions
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43
dlls/advapi32/registry.c
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@ -91,15 +91,47 @@ static inline int is_version_nt(void)
return !(GetVersion() & 0x80000000);
}
/* wrapper for NtCreateKey that creates the key recursively if necessary */
static NTSTATUS create_key( HKEY *retkey, ACCESS_MASK access, OBJECT_ATTRIBUTES *attr,
const UNICODE_STRING *class, ULONG options, PULONG dispos )
{
NTSTATUS status = NtCreateKey( (HANDLE *)retkey, access, attr, 0, class, options, dispos );
if (status == STATUS_OBJECT_NAME_NOT_FOUND)
{
DWORD attrs, i = 0, len = attr->ObjectName->Length / sizeof(WCHAR);
while (i < len && attr->ObjectName->Buffer[i] != '\\') i++;
if (i == len) return status;
attrs = attr->Attributes;
attr->Attributes &= ~OBJ_OPENLINK;
while (i < len)
{
attr->ObjectName->Length = i * sizeof(WCHAR);
status = NtCreateKey( (HANDLE *)retkey, access, attr, 0, class,
options & ~REG_OPTION_CREATE_LINK, dispos );
if (status) return status;
NtClose( *retkey );
while (i < len && attr->ObjectName->Buffer[i] == '\\') i++;
while (i < len && attr->ObjectName->Buffer[i] != '\\') i++;
}
attr->Attributes = attrs;
attr->ObjectName->Length = len * sizeof(WCHAR);
status = NtCreateKey( (PHANDLE)retkey, access, attr, 0, class, options, dispos );
}
return status;
}
/* create one of the HKEY_* special root keys */
static HKEY create_special_root_hkey( HANDLE hkey, DWORD access )
static HKEY create_special_root_hkey( HKEY hkey, DWORD access )
{
HKEY ret = 0;
int idx = (UINT_PTR)hkey - (UINT_PTR)HKEY_SPECIAL_ROOT_FIRST;
if (hkey == HKEY_CURRENT_USER)
{
if (RtlOpenCurrentUser( access, &hkey )) return 0;
if (RtlOpenCurrentUser( access, (HANDLE *)&hkey )) return 0;
TRACE( "HKEY_CURRENT_USER -> %p\n", hkey );
/* don't cache the key in the table if caching is disabled */
@ -118,7 +150,7 @@ static HKEY create_special_root_hkey( HANDLE hkey, DWORD access )
attr.SecurityDescriptor = NULL;
attr.SecurityQualityOfService = NULL;
RtlInitUnicodeString( &name, root_key_names[idx] );
if (NtCreateKey( &hkey, access, &attr, 0, NULL, 0, NULL )) return 0;
if (create_key( &hkey, access, &attr, NULL, 0, NULL )) return 0;
TRACE( "%s -> %p\n", debugstr_w(attr.ObjectName->Buffer), hkey );
}
@ -194,8 +226,7 @@ LSTATUS WINAPI RegCreateKeyExW( HKEY hkey, LPCWSTR name, DWORD reserved, LPWSTR
RtlInitUnicodeString( &nameW, name );
RtlInitUnicodeString( &classW, class );
return RtlNtStatusToDosError( NtCreateKey( (PHANDLE)retkey, access, &attr, 0,
&classW, options, dispos ) );
return RtlNtStatusToDosError( create_key( retkey, access, &attr, &classW, options, dispos ) );
}
@ -254,7 +285,7 @@ LSTATUS WINAPI RegCreateKeyExA( HKEY hkey, LPCSTR name, DWORD reserved, LPSTR cl
{
if (!(status = RtlAnsiStringToUnicodeString( &classW, &classA, TRUE )))
{
status = NtCreateKey( (PHANDLE)retkey, access, &attr, 0, &classW, options, dispos );
status = create_key( retkey, access, &attr, &classW, options, dispos );
RtlFreeUnicodeString( &classW );
}
}