Struct `SigAction`

#[repr(transparent)]
pub struct SigAction { /* private fields */ }

Action to take on receipt of a signal.

SigAction wraps libc::sigaction, which defines the full signal disposition: the handler, flags controlling delivery behavior, and the set of signals to block while the handler runs. Construct one with SigAction::new and install it with sigaction.

Examples

Install a handler for SIGINT:

# use nix::sys::signal::{self, SaFlags, SigAction, SigHandler, SigSet, Signal};
extern "C" fn handle_sigint(signal: libc::c_int) {
    // handle signal
}

fn main() {
    let handler = SigHandler::Handler(handle_sigint);
    let action = SigAction::new(handler, SaFlags::empty(), SigSet::empty());
    unsafe { signal::sigaction(Signal::SIGINT, &action) }.unwrap();
}

Implementations

`impl SigAction`

fn new(handler: SigHandler, flags: SaFlags, mask: SigSet) -> SigAction

Creates a new action.

The SA_SIGINFO bit in the flags argument is ignored (it will be set only if handler is the SigAction variant). mask specifies other signals to block during execution of the signal-catching function.

fn flags(&self) -> SaFlags

Returns the flags set on the action.

fn mask(&self) -> SigSet

Returns the set of signals that are blocked during execution of the action's signal-catching function.

fn handler(&self) -> SigHandler

Returns the action's handler.

Trait Implementations

`impl Clone for SigAction`

fn clone(&self) -> Self

`impl Copy for SigAction`

`impl Debug for SigAction`

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

`impl Eq for SigAction`

`impl Hash for SigAction`

fn hash<__H: Hasher>(&self, state: &mut __H)

`impl PartialEq for SigAction`

fn eq(&self, other: &Self) -> bool

`impl StructuralPartialEq for SigAction`

Auto Trait Implementations

`impl Freeze for SigAction`

`impl RefUnwindSafe for SigAction`

`impl Send for SigAction`

`impl Sync for SigAction`

`impl Unpin for SigAction`

`impl UnsafeUnpin for SigAction`

`impl UnwindSafe for SigAction`

Blanket Implementations

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

fn type_id(&self) -> TypeId

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

fn borrow(&self) -> &T

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

fn borrow_mut(&mut self) -> &mut T

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

unsafe fn clone_to_uninit(&self, dest: *mut u8)

`impl<T> From<T> for SigAction`

fn from(t: T) -> T: Returns the argument unchanged.

`impl<T> ToOwned for SigAction where T: Clone,`

type Owned = T;
fn to_owned(&self) -> T
fn clone_into(&self, target: &mut T)

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

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of [From]<T> for U chooses to do.

`impl<T, U> TryFrom<U> for SigAction where U: Into<T>,`

type Error = never;
fn try_from(value: U) -> Result<T, never>

`impl<T, U> TryInto<U> for SigAction where U: TryFrom<T>,`

type Error = <U as TryFrom<T>>::Error;
fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>