#[repr(transparent)]pub struct BorrowedFd<'fd> { /* private fields */ }
Expand description
A borrowed file descriptor.
This has a lifetime parameter to tie it to the lifetime of something that owns the file descriptor.
This uses repr(transparent)
and has the representation of a host file
descriptor, so it can be used in FFI in places where a file descriptor is
passed as an argument, it is not captured or consumed, and it never has the
value -1
.
This type’s .to_owned()
implementation returns another BorrowedFd
rather than an OwnedFd
. It just makes a trivial copy of the raw file
descriptor, which is then borrowed under the same lifetime.
Implementations
sourceimpl BorrowedFd<'_>
impl BorrowedFd<'_>
const: 1.63.0 · sourcepub const unsafe fn borrow_raw(fd: RawFd) -> Self
pub const unsafe fn borrow_raw(fd: RawFd) -> Self
Return a BorrowedFd
holding the given raw file descriptor.
Safety
The resource pointed to by fd
must remain open for the duration of
the returned BorrowedFd
, and it must not have the value -1
.
sourceimpl BorrowedFd<'_>
impl BorrowedFd<'_>
sourcepub fn try_clone_to_owned(&self) -> Result<OwnedFd>
pub fn try_clone_to_owned(&self) -> Result<OwnedFd>
Creates a new OwnedFd
instance that shares the same underlying file
description as the existing BorrowedFd
instance.
Trait Implementations
sourceimpl AsFd for BorrowedFd<'_>
impl AsFd for BorrowedFd<'_>
sourcefn as_fd(&self) -> BorrowedFd<'_>
fn as_fd(&self) -> BorrowedFd<'_>
Borrows the file descriptor. Read more
sourceimpl AsRawFd for BorrowedFd<'_>
impl AsRawFd for BorrowedFd<'_>
sourceimpl<'fd> Clone for BorrowedFd<'fd>
impl<'fd> Clone for BorrowedFd<'fd>
sourcefn clone(&self) -> BorrowedFd<'fd>
fn clone(&self) -> BorrowedFd<'fd>
Returns a copy of the value. Read more
1.0.0 · sourcefn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from source
. Read more
sourceimpl Debug for BorrowedFd<'_>
impl Debug for BorrowedFd<'_>
impl<'fd> Copy for BorrowedFd<'fd>
Auto Trait Implementations
impl<'fd> RefUnwindSafe for BorrowedFd<'fd>
impl<'fd> Send for BorrowedFd<'fd>
impl<'fd> Sync for BorrowedFd<'fd>
impl<'fd> Unpin for BorrowedFd<'fd>
impl<'fd> UnwindSafe for BorrowedFd<'fd>
Blanket Implementations
sourceimpl<T> BorrowMut<T> for T where
T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
const: unstable · sourcefn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more