Gio.File.query_writable_namespaces
Description: Reference for Gio.File.query_writable_namespaces

### Virtual Method

# Gio Filequery_writable_namespaces

#### Declaration [src]

    GFileAttributeInfoList*
    query_writable_namespaces (
      GFile* file,
      GCancellable* cancellable,
      GError** error
    )

#### Description [src]

Obtain the list of attribute namespaces where new attributes can be created by a user. An example of this is extended attributes (in the “xattr” namespace).

If `cancellable` is not `NULL`, then the operation can be cancelled by triggering the cancellable object from another thread. If the operation was cancelled, the error `G_IO_ERROR_CANCELLED` will be returned.

#### Parameters

`cancellable`

  Type: `GCancellable`

  Optional `GCancellable` object, `NULL` to ignore.

  The argument can be `NULL`.
  The data is owned by the caller of the method.

`error`

  Type: `GError **`

  The return location for a recoverable error.

  The argument can be `NULL`.
  If the return location is not `NULL`, then you must initialize it to a `NULL` `GError*`.
  The argument will be left initialized to `NULL` by the virtual function if there are no errors.
  In case of error, the argument will be set to a newly allocated `GError`; the caller will take ownership of the data, and be responsible for freeing it.

#### Return value

Type: `GFileAttributeInfoList`

A `GFileAttributeInfoList` describing the writable namespaces. When you are done with it, release it with g_file_attribute_info_list_unref().

The caller of the method takes ownership of the returned data, and is responsible for freeing it.