Fix build errors for the Horizon target

src/backend/libc/conv.rs

@@ -3,7 +3,10 @@
 //! for converting between rustix's types and libc types.
 
 use super::c;
-#[cfg(all(feature = "alloc", not(any(windows, target_os = "espidf"))))]
+#[cfg(all(
+    feature = "alloc",
+    not(any(windows, target_os = "espidf", target_os = "horizon"))
+))]
 use super::fd::IntoRawFd as _;
 use super::fd::{AsRawFd as _, BorrowedFd, FromRawFd as _, LibcFd, OwnedFd, RawFd};
 #[cfg(not(windows))]
@@ -35,7 +38,12 @@ pub(super) fn borrowed_fd(fd: BorrowedFd<'_>) -> LibcFd {
 
 #[cfg(all(
     feature = "alloc",
-    not(any(windows, target_os = "espidf", target_os = "redox"))
+    not(any(
+        windows,
+        target_os = "espidf",
+        target_os = "horizon",
+        target_os = "redox"
+    ))
 ))]
 #[inline]
 pub(super) fn owned_fd(fd: OwnedFd) -> LibcFd {

src/backend/libc/event/poll_fd.rs

@@ -8,13 +8,18 @@ use bitflags::bitflags;
 use core::fmt;
 use core::marker::PhantomData;
 
+#[cfg(not(target_os = "horizon"))]
+pub(crate) type RawPollFlags = ffi::c_short;
+#[cfg(target_os = "horizon")]
+pub(crate) type RawPollFlags = ffi::c_int;
+
 bitflags! {
     /// `POLL*` flags for use with [`poll`].
     ///
     /// [`poll`]: crate::event::poll
     #[repr(transparent)]
     #[derive(Copy, Clone, Eq, PartialEq, Hash, Debug)]
-    pub struct PollFlags: ffi::c_short {
+    pub struct PollFlags: RawPollFlags {
         /// `POLLIN`
         const IN = c::POLLIN;
         /// `POLLPRI`

src/backend/libc/fs/mod.rs

@@ -1,4 +1,7 @@
-#[cfg(all(feature = "alloc", not(any(target_os = "espidf", target_os = "redox"))))]
+#[cfg(all(
+    feature = "alloc",
+    not(any(target_os = "espidf", target_os = "horizon", target_os = "redox"))
+))]
 pub(crate) mod dir;
 #[cfg(linux_kernel)]
 pub mod inotify;

src/backend/libc/fs/syscalls.rs

@@ -49,11 +49,12 @@ use crate::fs::SealFlags;
     target_os = "wasi",
 )))]
 use crate::fs::StatFs;
-#[cfg(not(any(target_os = "espidf", target_os = "vita")))]
+#[cfg(not(any(target_os = "espidf", target_os = "horizon", target_os = "vita")))]
 use crate::fs::Timestamps;
 #[cfg(not(any(
     apple,
     target_os = "espidf",
+    target_os = "horizon",
     target_os = "redox",
     target_os = "vita",
     target_os = "wasi"

src/backend/libc/fs/types.rs

@@ -1,4 +1,5 @@
 use crate::backend::c;
+#[cfg(not(target_os = "horizon"))]
 use crate::ffi;
 use bitflags::bitflags;
 
@@ -627,6 +628,7 @@ impl FileType {
         target_os = "aix",
         target_os = "espidf",
         target_os = "haiku",
+        target_os = "horizon",
         target_os = "nto",
         target_os = "redox",
         target_os = "vita"

src/backend/libc/io/syscalls.rs

@@ -8,6 +8,7 @@ use crate::fd::{AsFd as _, BorrowedFd, OwnedFd, RawFd};
 #[cfg(not(any(
     target_os = "aix",
     target_os = "espidf",
+    target_os = "horizon",
     target_os = "nto",
     target_os = "vita",
     target_os = "wasi"

src/backend/libc/net/sockopt.rs

@@ -27,6 +27,7 @@ use crate::net::xdp::{XdpMmapOffsets, XdpOptionsFlags, XdpRingOffset, XdpStatist
     target_os = "emscripten",
     target_os = "espidf",
     target_os = "haiku",
+    target_os = "horizon",
     target_os = "netbsd",
     target_os = "nto",
     target_os = "vita",

src/backend/libc/pipe/syscalls.rs

@@ -7,6 +7,7 @@ use crate::io;
     target_os = "aix",
     target_os = "espidf",
     target_os = "haiku",
+    target_os = "horizon",
     target_os = "nto",
     target_os = "wasi"
 )))]

src/backend/libc/process/syscalls.rs

@@ -10,6 +10,7 @@ use crate::backend::conv::ret_discarded_char_ptr;
 #[cfg(not(any(
     target_os = "espidf",
     target_os = "fuchsia",
+    target_os = "horizon",
     target_os = "redox",
     target_os = "vita",
     target_os = "wasi"
@@ -48,6 +49,7 @@ use crate::process::Signal;
 #[cfg(not(any(
     target_os = "espidf",
     target_os = "fuchsia",
+    target_os = "horizon",
     target_os = "vita",
     target_os = "wasi"
 )))]

src/backend/libc/process/types.rs

@@ -1,6 +1,7 @@
 #[cfg(not(any(
     target_os = "espidf",
     target_os = "fuchsia",
+    target_os = "horizon",
     target_os = "redox",
     target_os = "vita",
     target_os = "wasi"

src/backend/libc/system/syscalls.rs

@@ -14,6 +14,7 @@ use {
 #[cfg(not(any(
     target_os = "emscripten",
     target_os = "espidf",
+    target_os = "horizon",
     target_os = "redox",
     target_os = "vita",
     target_os = "wasi"

src/backend/libc/thread/syscalls.rs

@@ -13,6 +13,7 @@ use crate::pid::Pid;
     target_os = "emscripten",
     target_os = "espidf",
     target_os = "haiku",
+    target_os = "horizon",
     target_os = "openbsd",
     target_os = "redox",
     target_os = "vita",

src/fs/at.rs

@@ -20,7 +20,13 @@ use crate::fs::CloneFlags;
 use crate::fs::RenameFlags;
 #[cfg(not(target_os = "espidf"))]
 use crate::fs::Stat;
-#[cfg(not(any(apple, target_os = "espidf", target_os = "vita", target_os = "wasi")))]
+#[cfg(not(any(
+    apple,
+    target_os = "espidf",
+    target_os = "horizon",
+    target_os = "vita",
+    target_os = "wasi"
+)))]
 use crate::fs::{Dev, FileType};
 #[cfg(not(any(target_os = "espidf", target_os = "wasi")))]
 use crate::fs::{Gid, Uid};
@@ -34,7 +40,7 @@ use {
     alloc::vec::Vec,
     backend::fd::BorrowedFd,
 };
-#[cfg(not(any(target_os = "espidf", target_os = "vita")))]
+#[cfg(not(any(target_os = "espidf", target_os = "horizon", target_os = "vita")))]
 use {crate::fs::Timestamps, crate::timespec::Nsecs};
 
 /// `UTIME_NOW` for use with [`utimensat`].

src/fs/mod.rs

@@ -5,7 +5,10 @@ mod at;
 mod constants;
 #[cfg(linux_kernel)]
 mod copy_file_range;
-#[cfg(all(feature = "alloc", not(any(target_os = "espidf", target_os = "redox"))))]
+#[cfg(all(
+    feature = "alloc",
+    not(any(target_os = "espidf", target_os = "horizon", target_os = "redox"))
+))]
 mod dir;
 #[cfg(not(any(
     apple,
@@ -70,7 +73,10 @@ pub use at::*;
 pub use constants::*;
 #[cfg(linux_kernel)]
 pub use copy_file_range::copy_file_range;
-#[cfg(all(feature = "alloc", not(any(target_os = "espidf", target_os = "redox"))))]
+#[cfg(all(
+    feature = "alloc",
+    not(any(target_os = "espidf", target_os = "horizon", target_os = "redox"))
+))]
 pub use dir::{Dir, DirEntry};
 #[cfg(not(any(
     apple,

src/net/sockopt.rs

@@ -156,6 +156,7 @@ use crate::net::xdp::{XdpMmapOffsets, XdpOptionsFlags, XdpStatistics, XdpUmemReg
     target_os = "emscripten",
     target_os = "espidf",
     target_os = "haiku",
+    target_os = "horizon",
     target_os = "netbsd",
     target_os = "nto",
     target_os = "vita",

src/pipe.rs

@@ -9,6 +9,7 @@ use crate::{backend, io};
     windows,
     target_os = "espidf",
     target_os = "haiku",
+    target_os = "horizon",
     target_os = "redox",
     target_os = "vita",
     target_os = "wasi",

src/process/ioctl.rs

@@ -22,35 +22,17 @@ use backend::fd::AsFd;
 /// [FreeBSD]: https://man.freebsd.org/cgi/man.cgi?query=tty&sektion=4
 /// [NetBSD]: https://man.netbsd.org/tty.4
 /// [OpenBSD]: https://man.openbsd.org/tty.4
-#[cfg(not(any(
-    windows,
-    target_os = "aix",
-    target_os = "horizon",
-    target_os = "redox",
-    target_os = "wasi"
-)))]
+#[cfg(not(any(windows, target_os = "aix", target_os = "redox", target_os = "wasi")))]
 #[inline]
 #[doc(alias = "TIOCSCTTY")]
 pub fn ioctl_tiocsctty<Fd: AsFd>(fd: Fd) -> io::Result<()> {
     unsafe { ioctl::ioctl(fd, Tiocsctty) }
 }
 
-#[cfg(not(any(
-    windows,
-    target_os = "aix",
-    target_os = "horizon",
-    target_os = "redox",
-    target_os = "wasi"
-)))]
+#[cfg(not(any(windows, target_os = "aix", target_os = "redox", target_os = "wasi")))]
 struct Tiocsctty;
 
-#[cfg(not(any(
-    windows,
-    target_os = "aix",
-    target_os = "horizon",
-    target_os = "redox",
-    target_os = "wasi"
-)))]
+#[cfg(not(any(windows, target_os = "aix", target_os = "redox", target_os = "wasi")))]
 unsafe impl ioctl::Ioctl for Tiocsctty {
     type Output = ();
 

src/process/mod.rs

@@ -17,7 +17,12 @@ mod exit;
 mod fcntl_getlk;
 #[cfg(not(target_os = "wasi"))] // WASI doesn't have get[gpu]id.
 mod id;
-#[cfg(not(any(target_os = "aix", target_os = "espidf", target_os = "vita")))]
+#[cfg(not(any(
+    target_os = "aix",
+    target_os = "horizon",
+    target_os = "espidf",
+    target_os = "vita"
+)))]
 mod ioctl;
 #[cfg(not(any(target_os = "espidf", target_os = "wasi")))]
 mod kill;
@@ -74,7 +79,12 @@ pub use exit::*;
 pub use fcntl_getlk::*;
 #[cfg(not(target_os = "wasi"))]
 pub use id::*;
-#[cfg(not(any(target_os = "aix", target_os = "espidf", target_os = "vita")))]
+#[cfg(not(any(
+    target_os = "aix",
+    target_os = "espidf",
+    target_os = "horizon",
+    target_os = "vita"
+)))]
 pub use ioctl::*;
 #[cfg(not(any(target_os = "espidf", target_os = "wasi")))]
 pub use kill::*;
@@ -103,6 +113,7 @@ pub use rlimit::*;
     target_os = "emscripten",
     target_os = "espidf",
     target_os = "fuchsia",
+    target_os = "horizon",
     target_os = "redox",
     target_os = "vita",
     target_os = "wasi"

src/process/types.rs

@@ -4,8 +4,11 @@
 
 #![allow(unsafe_code)]
 
+#[cfg(not(target_os = "horizon"))]
 use crate::backend::c;
+#[cfg(not(target_os = "horizon"))]
 use crate::pid::Pid;
+#[cfg(not(target_os = "horizon"))]
 use core::mem::transmute;
 
 /// File lock data structure used in [`fcntl_getlk`].

src/system.rs

@@ -6,7 +6,12 @@ use crate::backend;
 #[cfg(target_os = "linux")]
 use crate::backend::c;
 use crate::ffi::CStr;
-#[cfg(not(any(target_os = "espidf", target_os = "emscripten", target_os = "vita")))]
+#[cfg(not(any(
+    target_os = "espidf",
+    target_os = "emscripten",
+    target_os = "horizon",
+    target_os = "vita"
+)))]
 use crate::io;
 use core::fmt;