To make a future cancellable, use:
let (future, canceller) =
crate::tools::futures::cancellable(future);
Proceed with using `future` as usual, `canceller` is
clonable and can cancel the future via the `.cancel()`
method.
Signed-off-by: Wolfgang Bumiller <w.bumiller@proxmox.com>
After importing the I/O ops trait via:
use crate::tools::io::ops::*;
Instead of:
let mut buffer = vec![0u8; 65536];
file.read_exact(&mut buffer)?;
use:
let buffer = file.read_exact_allocated(65536)?;
After importing the vector helpers via:
use crate::tools::vec::{self, ops::*};
For a buffer which *could* be uninitialized but you prefer
zero-initialization anyway for security reasons, instead of:
let mut buffer = vec![0u8; len];
use:
let mut buffer = vec::undefined(len);
which zero-initializes, but, if the `valgrind` feature flag
is enabled, marks the vector as having undefined contents,
so reading from it will cause valgrind errors.
Signed-off-by: Wolfgang Bumiller <w.bumiller@proxmox.com>
Using O_CLOEXEC by default, and returning Fd handles to
ensure they get dropped on bail!() or panic!() if the RawFds
aren't used yet.
Signed-off-by: Wolfgang Bumiller <w.bumiller@proxmox.com>
This provides a Stream<Item = siginfo> via nix' signalfd,
by wrapping it in tokio's PollEvented2 struct to allow
polling via tokio's event loop.
Signed-off-by: Wolfgang Bumiller <w.bumiller@proxmox.com>
Single-method traits usually use the same name as their
method and aren't usually the 'noun' (which is usually an
implementation of them instead).
Signed-off-by: Wolfgang Bumiller <w.bumiller@proxmox.com>
Tie two dependent values together, such as a nix::Dir with
its nix::dir::Iter<'a> where 'a is tied to the Dir's
lifetime, making it otherwise impossible to return them or
store them in a struct.
Alternatively we could try the 'rental' crate.
Signed-off-by: Wolfgang Bumiller <w.bumiller@proxmox.com>
Until we add the extra options like we have in pve, just use
the already existing (since 1.26) shortcut.
Signed-off-by: Wolfgang Bumiller <w.bumiller@proxmox.com>
Dietmar Maurer
Wolfgang Bumiller
Christian Ebner