AddSeals adds new file seals to a memfd inode.

GetSeals returns the current set of seals on a memfd inode.

NewMemfd creates a new regular file and file description as for memfd_create.

NewZeroFile creates a new regular file and file description as for mmap(MAP_SHARED | MAP_ANONYMOUS).

SetDefaultSizeLimit configures the size limit to be used for tmpfs mounts that do not specify a size= mount option.

Name is the default filesystem name.

FilesystemOpts is used to pass configuration data to tmpfs.

FilesystemType implements vfs.FilesystemType.