Struct StoragePermissions

pub struct StoragePermissions(/* private fields */);

Permissions for accessing persistent storage.

This is a general type capable of representing permissions in different ways. Users of storage permissions do not need to understand the different ways permissions are stored internally. Instead, layers that need to enforce permissions only use the following API:

fn StoragePermissions::check_read_permission(&self, stored_id: u32) -> bool;
fn StoragePermissions::check_modify_permission(&self, stored_id: u32) -> bool;
fn StoragePermissions::get_write_id(&self) -> Option<u32>;

Implementations

impl StoragePermissions

pub fn new_self_only( short_id_fixed: NonZeroU32, _cap: &dyn ApplicationStorageCapability, ) -> Self

pub fn new_fixed_size( app_id: NonZeroU32, write_permission: bool, read_modify_self: bool, read_count: usize, read_permissions: [u32; 8], modify_count: usize, modify_permissions: [u32; 8], _cap: &dyn ApplicationStorageCapability, ) -> Self

pub fn new_listed( app_id: NonZeroU32, write_permission: bool, read_modify_self: bool, read_permissions: &'static [u32], modify_permissions: &'static [u32], _cap: &dyn ApplicationStorageCapability, ) -> Self

pub fn new_kernel(_cap: &dyn KerneluserStorageCapability) -> Self

pub fn new_null() -> Self

pub fn check_read_permission(&self, stored_id: u32) -> bool

Check if these storage permissions grant read access to the stored state marked with identifier stored_id.

pub fn check_modify_permission(&self, stored_id: u32) -> bool

Check if these storage permissions grant modify access to the stored state marked with identifier stored_id.

pub fn get_write_id(&self) -> Option<u32>

Retrieve the identifier to use when storing state, if the application has permission to write. Returns None if the application cannot write.

Trait Implementations

impl Clone for StoragePermissions

fn clone(&self) -> StoragePermissions

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for StoragePermissions