Struct VirtualSystem

Source

pub struct VirtualSystem {
    pub state: Rc<RefCell<SystemState>>,
    pub process_id: Pid,
}

Expand description

Simulated system.

See the module-level documentation to grasp a basic understanding of VirtualSystem.

A VirtualSystem instance has two members: state and process_id. The former is a SystemState that effectively contains the state of the system. The state is contained in Rc so that processes can share the same state. The latter is a process ID that identifies a process calling the System interface.

When you clone a virtual system, the clone will have the same process_id as the original. To simulate the fork system call, you would probably want to assign a new process ID and add a new Process to the system state.

Fields§

§state: Rc<RefCell<SystemState>>

State of the system.

§process_id: Pid

Process ID of the process that is interacting with the system.

Struct VirtualSystem Copy item path

Fields§

Implementations§

impl VirtualSystem

pub fn new() -> VirtualSystem

pub fn current_process(&self) -> Ref<'_, Process>

§Panics

pub fn current_process_mut(&self) -> RefMut<'_, Process>

§Panics

pub fn with_open_file_description<F, R>(&self, fd: Fd, f: F) -> Result<R>where F: FnOnce(&OpenFileDescription) -> Result<R>,

pub fn with_open_file_description_mut<F, R>(&self, fd: Fd, f: F) -> Result<R>where F: FnOnce(&mut OpenFileDescription) -> Result<R>,

Trait Implementations§

impl CaughtSignals for VirtualSystem

fn caught_signals(&self) -> Vec<Number>

impl Chdir for VirtualSystem

fn chdir(&self, path: &CStr) -> Result<()>

impl Clock for VirtualSystem

fn now(&self) -> Instant

impl Clone for VirtualSystem

fn clone(&self) -> VirtualSystem

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

impl Close for VirtualSystem

fn close(&self, fd: Fd) -> Result<()>

impl Debug for VirtualSystem

fn fmt(&self, f: &mut Formatter<'_>) -> Result

impl Default for VirtualSystem

fn default() -> Self

impl Dup for VirtualSystem

fn dup(&self, from: Fd, to_min: Fd, flags: EnumSet<FdFlag>) -> Result<Fd>

fn dup2(&self, from: Fd, to: Fd) -> Result<Fd>

impl Exec for VirtualSystem

fn execve( &self, path: &CStr, args: &[CString], envs: &[CString], ) -> FlexFuture<Result<Infallible>> ⓘ

impl Exit for VirtualSystem

fn exit(&self, exit_status: ExitStatus) -> FlexFuture<Infallible> ⓘ

impl Fcntl for VirtualSystem

fn ofd_access(&self, fd: Fd) -> Result<OfdAccess>

fn get_and_set_nonblocking(&self, fd: Fd, _nonblocking: bool) -> Result<bool>

fn fcntl_getfd(&self, fd: Fd) -> Result<EnumSet<FdFlag>>

fn fcntl_setfd(&self, fd: Fd, flags: EnumSet<FdFlag>) -> Result<()>

impl Fork for VirtualSystem

fn new_child_process(&self) -> Result<ChildProcessStarter<Self>>

impl Fstat for VirtualSystem

fn fstat(&self, fd: Fd) -> Result<Stat>

fn fstatat( &self, dir_fd: Fd, path: &CStr, follow_symlinks: bool, ) -> Result<Stat>

fn is_directory(&self, path: &CStr) -> bool

fn fd_is_pipe(&self, fd: Fd) -> bool

impl GetCwd for VirtualSystem

fn getcwd(&self) -> Result<PathBuf>

impl GetPid for VirtualSystem

fn getsid(&self, pid: Pid) -> Result<Pid>

fn getpid(&self) -> Pid

fn getppid(&self) -> Pid

fn getpgrp(&self) -> Pid

impl GetPw for VirtualSystem

fn getpwnam_dir(&self, name: &CStr) -> Result<Option<PathBuf>>

impl GetRlimit for VirtualSystem

fn getrlimit(&self, resource: Resource) -> Result<LimitPair>

impl GetUid for VirtualSystem

fn getuid(&self) -> Uid

fn geteuid(&self) -> Uid

fn getgid(&self) -> Gid

fn getegid(&self) -> Gid

impl IsExecutableFile for VirtualSystem

fn is_executable_file(&self, path: &CStr) -> bool

impl Isatty for VirtualSystem

fn isatty(&self, fd: Fd) -> bool

impl Open for VirtualSystem

fn open( &self, path: &CStr, access: OfdAccess, flags: EnumSet<OpenFlag>, mode: Mode, ) -> Result<Fd>

fn open_tmpfile(&self, _parent_dir: &Path) -> Result<Fd>

fn fdopendir(&self, fd: Fd) -> Result<impl Dir + use<>>

fn opendir(&self, path: &CStr) -> Result<impl Dir + use<>>

impl Pipe for VirtualSystem

fn pipe(&self) -> Result<(Fd, Fd)>

impl Read for VirtualSystem

fn read(&self, fd: Fd, buffer: &mut [u8]) -> Result<usize>

impl Seek for VirtualSystem

fn lseek(&self, fd: Fd, position: SeekFrom) -> Result<u64>

impl Select for VirtualSystem

fn select( &self, readers: &mut Vec<Fd>, writers: &mut Vec<Fd>, timeout: Option<Duration>, signal_mask: Option<&[Number]>, ) -> Result<c_int>

impl SendSignal for VirtualSystem

Struct VirtualSystem

pub fn with_open_file_description<F, R>(&self, fd: Fd, f: F) -> Result<R>
where F: FnOnce(&OpenFileDescription) -> Result<R>,

pub fn with_open_file_description_mut<F, R>(&self, fd: Fd, f: F) -> Result<R>
where F: FnOnce(&mut OpenFileDescription) -> Result<R>,

impl<T> Any for T
where T: 'static + ?Sized,

impl<T> Borrow<T> for T
where T: ?Sized,

impl<T> BorrowMut<T> for T
where T: ?Sized,

impl<T> CloneToUninit for T
where T: Clone,

impl<T> DynClone for T
where T: Clone,

impl<T, U> Into<U> for T
where U: From<T>,

fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

impl<T> SystemEx for T
where T: System + ?Sized,