Struct FileTable 

pub struct FileTable { /* private fields */ }

File descriptor table for a process

Implementations

impl FileTable

pub fn new() -> Self

Create a new file table

impl FileTable

pub fn open(&self, file: Arc<File>) -> Result<FileDescriptor, KernelError>

Open a file and return a file descriptor

pub fn open_with_flags( &self, file: Arc<File>, cloexec: bool, ) -> Result<FileDescriptor, KernelError>

Open a file with close-on-exec flag and return a file descriptor

pub fn get(&self, fd: FileDescriptor) -> Option<Arc<File>>

Get a file by descriptor

pub fn get_entry(&self, fd: FileDescriptor) -> Option<(Arc<File>, bool)>

Get a file entry by descriptor (includes flags)

pub fn close(&self, fd: FileDescriptor) -> Result<(), KernelError>

Close a file descriptor

pub fn dup(&self, fd: FileDescriptor) -> Result<FileDescriptor, KernelError>

Duplicate a file descriptor

pub fn dup_cloexec( &self, fd: FileDescriptor, ) -> Result<FileDescriptor, KernelError>

Duplicate a file descriptor with close-on-exec flag

pub fn dup_at_least( &self, fd: FileDescriptor, min_fd: FileDescriptor, cloexec: bool, ) -> Result<FileDescriptor, KernelError>

Duplicate fd to the lowest available fd >= min_fd (for F_DUPFD)

pub fn dup2( &self, old_fd: FileDescriptor, new_fd: FileDescriptor, ) -> Result<(), KernelError>

Replace a file descriptor with another

pub fn dup3( &self, old_fd: FileDescriptor, new_fd: FileDescriptor, cloexec: bool, ) -> Result<(), KernelError>

Replace a file descriptor with another, setting close-on-exec flag

pub fn set_cloexec( &self, fd: FileDescriptor, cloexec: bool, ) -> Result<(), KernelError>

Set close-on-exec flag for a file descriptor

pub fn get_cloexec(&self, fd: FileDescriptor) -> Result<bool, KernelError>

Get close-on-exec flag for a file descriptor

pub fn close_on_exec(&self)

Close all file descriptors marked with close-on-exec Called during exec() system call

pub fn count_open(&self) -> usize

Get the number of open file descriptors

pub fn clone_for_fork(&self) -> Self

Clone file table for fork() All file descriptors are duplicated with same flags

pub fn close_all(&self)

Close all open file descriptors

Trait Implementations

impl Default for FileTable

fn default() -> Self

Returns the “default value” for a type.