sighand: move signal handling into workspace crate

src/sighand.rs

@@ -1,65 +1 @@
-use {
-    crate::{
-        async_engine::{AsyncEngine, SpawnedFuture},
-        io_uring::IoUring,
-        utils::{
-            buf::TypedBuf,
-            errorfmt::ErrorFmt,
-            oserror::{OsError, OsErrorExt2},
-        },
-    },
-    std::rc::Rc,
-    thiserror::Error,
-    uapi::{OwnedFd, c},
-};
-
-#[derive(Debug, Error)]
-pub enum SighandError {
-    #[error("Could not block the signalfd signals")]
-    BlockFailed(#[source] OsError),
-    #[error("Could not create a signalfd")]
-    CreateFailed(#[source] OsError),
-}
-
-pub fn install(
-    eng: &Rc<AsyncEngine>,
-    ring: &Rc<IoUring>,
-) -> Result<SpawnedFuture<()>, SighandError> {
-    let mut set: c::sigset_t = uapi::pod_zeroed();
-    uapi::sigaddset(&mut set, c::SIGINT).unwrap();
-    uapi::sigaddset(&mut set, c::SIGTERM).unwrap();
-    uapi::sigaddset(&mut set, c::SIGPIPE).unwrap();
-    uapi::pthread_sigmask(c::SIG_BLOCK, Some(&set), None).map_os_err(SighandError::BlockFailed)?;
-    let fd = uapi::signalfd_new(&set, c::SFD_CLOEXEC)
-        .map(Rc::new)
-        .map_os_err(SighandError::CreateFailed)?;
-    Ok(eng.spawn("signal handler", handle_signals(fd, ring.clone())))
-}
-
-async fn handle_signals(fd: Rc<OwnedFd>, ring: Rc<IoUring>) {
-    let mut buf = TypedBuf::<c::signalfd_siginfo>::new();
-    loop {
-        if let Err(e) = ring.read(&fd, buf.buf()).await {
-            log::error!("Could not read from signal fd: {}", ErrorFmt(e));
-            return;
-        }
-        let sig = buf.t().ssi_signo as i32;
-        log::info!("Received signal {}", sig);
-        if matches!(sig, c::SIGINT | c::SIGTERM) {
-            log::info!("Exiting");
-            ring.stop();
-        }
-    }
-}
-
-pub fn reset_all() {
-    const NSIG: c::c_int = 64;
-    unsafe {
-        for sig in 1..=NSIG {
-            c::signal(sig, c::SIG_DFL);
-        }
-    }
-    let mut set: c::sigset_t = uapi::pod_zeroed();
-    uapi::sigfillset(&mut set).unwrap();
-    let _ = uapi::pthread_sigmask(c::SIG_UNBLOCK, Some(&set), None);
-}
+pub use jay_sighand::*;