queryFilesystemInfo
Similar to g_file_query_info(), but obtains information about the filesystem the @file is on, rather than the file itself. For instance the amount of space available and the type of the filesystem.
The @attributes value is a string that specifies the attributes that should be gathered. It is not an error if it's not possible to read a particular requested attribute from a file - it just won't be set. @attributes should be a comma-separated list of attributes or attribute wildcards. The wildcard "" means all attributes, and a wildcard like "filesystem::" means all attributes in the filesystem namespace. The standard namespace for filesystem attributes is "filesystem". Common attributes of interest are %G_FILE_ATTRIBUTE_FILESYSTEM_SIZE (the total size of the filesystem in bytes), %G_FILE_ATTRIBUTE_FILESYSTEM_FREE (number of bytes available), and %G_FILE_ATTRIBUTE_FILESYSTEM_TYPE (type of the filesystem).
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.
If the file does not exist, the %G_IO_ERROR_NOT_FOUND error will be returned. Other errors are possible too, and depend on what kind of filesystem the file is on.
Return
a #GFileInfo or null if there was an error. Free the returned object with g_object_unref().
Parameters
an attribute query string
optional #GCancellable object, null to ignore