Fix mistakes, switch to libc fork

Cargo.toml

@@ -39,15 +39,17 @@ once_cell = { version = "1.5.2", optional = true }
 #linux-raw-sys = { version = "0.4.11", default-features = false, features = ["general", "errno", "ioctl", "no_std", "elf"] }
 linux-raw-sys = { git = "https://github.com/arctic-alpaca/linux-raw-sys", branch = "v0.4.11", version = "0.4.11", default-features = false, features = ["general", "errno", "ioctl", "no_std", "elf"] }
 libc_errno = { package = "errno", version = "0.3.8", default-features = false, optional = true }
-libc = { version = "0.2.150", default-features = false, features = ["extra_traits"], optional = true }
+#libc = { version = "0.2.150", default-features = false, features = ["extra_traits"], optional = true }
+libc = { git = "https://github.com/arctic-alpaca/libc", default-features = false, features = ["extra_traits"], optional = true }
 
 # Dependencies for platforms where only libc is supported:
 #
 # On all other Unix-family platforms, and under Miri, we always use the libc
 # backend, so enable its dependencies unconditionally.
 [target.'cfg(all(not(windows), any(rustix_use_libc, miri, not(all(target_os = "linux", target_endian = "little", any(target_arch = "arm", all(target_arch = "aarch64", target_pointer_width = "64"), target_arch = "riscv64", all(rustix_use_experimental_asm, target_arch = "powerpc64"), all(rustix_use_experimental_asm, target_arch = "mips"), all(rustix_use_experimental_asm, target_arch = "mips32r6"), all(rustix_use_experimental_asm, target_arch = "mips64"), all(rustix_use_experimental_asm, target_arch = "mips64r6"), target_arch = "x86", all(target_arch = "x86_64", target_pointer_width = "64")))))))'.dependencies]
 libc_errno = { package = "errno", version = "0.3.8", default-features = false }
-libc = { version = "0.2.150", default-features = false, features = ["extra_traits"] }
+#libc = { version = "0.2.150", default-features = false, features = ["extra_traits"] }
+libc = { git = "https://github.com/arctic-alpaca/libc", default-features = false, features = ["extra_traits"] }
 
 # Additional dependencies for Linux with the libc backend:
 #
@@ -76,7 +78,8 @@ default-features = false
 
 [dev-dependencies]
 tempfile = "3.5.0"
-libc = "0.2.150"
+#libc = "0.2.150"
+libc = {git = "https://github.com/arctic-alpaca/libc"}
 libc_errno = { package = "errno", version = "0.3.8", default-features = false }
 serial_test = "2.0.0"
 memoffset = "0.9.0"

src/backend/libc/net/msghdr.rs

@@ -129,6 +129,7 @@ pub(crate) fn with_unix_msghdr<R>(
 }
 
 /// Create a message header intended to send with an IPv6 address.
+#[cfg(target_os = "linux")]
 pub(crate) fn with_xdp_msghdr<R>(
     addr: &SocketAddrXdp,
     iov: &[IoSlice<'_>],

src/backend/libc/net/read_sockaddr.rs

@@ -201,12 +201,12 @@ pub(crate) unsafe fn read_sockaddr(
                 return Err(io::Errno::INVAL);
             }
             let decode = &*storage.cast::<c::sockaddr_xdp>();
-            SocketAddrAny::Xdp(SocketAddrXdp::new(
+            Ok(SocketAddrAny::Xdp(SocketAddrXdp::new(
                 SockaddrXdpFlags::from_bits_retain(decode.sxdp_flags),
                 u32::from_be(decode.sxdp_ifindex),
                 u32::from_be(decode.sxdp_queue_id),
                 u32::from_be(decode.sxdp_shared_umem_fd),
-            ))
+            )))
         }
         _ => Err(io::Errno::INVAL),
     }

src/backend/libc/net/sockopt.rs

@@ -71,7 +71,6 @@ use alloc::borrow::ToOwned;
     target_os = "illumos"
 ))]
 use alloc::string::String;
-use bitflags::Flags;
 #[cfg(apple)]
 use c::TCP_KEEPALIVE as TCP_KEEPIDLE;
 #[cfg(not(any(apple, target_os = "openbsd", target_os = "haiku", target_os = "nto")))]

src/backend/libc/net/syscalls.rs

@@ -149,7 +149,7 @@ pub(crate) fn sendto_unix(
     }
 }
 
-#[cfg(not(any(target_os = "redox", target_os = "wasi")))]
+#[cfg(target_os = "linux")]
 pub(crate) fn sendto_xdp(
     fd: BorrowedFd<'_>,
     buf: &[u8],
@@ -245,8 +245,8 @@ pub(crate) fn bind_xdp(sockfd: BorrowedFd<'_>, addr: &SocketAddrXdp) -> io::Resu
     unsafe {
         ret(c::bind(
             borrowed_fd(sockfd),
-            as_ptr(&encode_sockaddr_xdp(xdp)).cast(),
-            size_of::<c::sockaddr_xdp, _>(),
+            as_ptr(&encode_sockaddr_xdp(addr)).cast(),
+            size_of::<c::sockaddr_xdp>() as c::socklen_t,
         ))
     }
 }

src/backend/libc/net/write_sockaddr.rs

@@ -9,7 +9,6 @@ use crate::backend::c;
 #[cfg(target_os = "linux")]
 use crate::net::xdp::SocketAddrXdp;
 use crate::net::{SocketAddrAny, SocketAddrV4, SocketAddrV6};
-use bitflags::Flags;
 use core::mem::size_of;
 
 pub(crate) unsafe fn write_sockaddr(

src/backend/linux_raw/net/sockopt.rs

@@ -24,7 +24,6 @@ use crate::net::{
 use alloc::borrow::ToOwned;
 #[cfg(feature = "alloc")]
 use alloc::string::String;
-use bitflags::Flags;
 use core::mem::MaybeUninit;
 use core::time::Duration;
 use linux_raw_sys::general::{__kernel_old_timeval, __kernel_sock_timeval};

src/backend/linux_raw/net/syscalls.rs

@@ -621,6 +621,7 @@ pub(crate) fn sendto_unix(
     }
 }
 
+#[cfg(target_os = "linux")]
 #[inline]
 pub(crate) fn sendto_xdp(
     fd: BorrowedFd<'_>,

src/backend/linux_raw/net/write_sockaddr.rs

@@ -6,7 +6,6 @@ use crate::backend::c;
 #[cfg(target_os = "linux")]
 use crate::net::xdp::SocketAddrXdp;
 use crate::net::{SocketAddrAny, SocketAddrStorage, SocketAddrUnix, SocketAddrV4, SocketAddrV6};
-use bitflags::Flags;
 use core::mem::size_of;
 
 pub(crate) unsafe fn write_sockaddr(

src/net/socket.rs

@@ -3,7 +3,7 @@ use crate::net::{SocketAddr, SocketAddrAny, SocketAddrV4, SocketAddrV6};
 use crate::{backend, io};
 use backend::fd::{AsFd, BorrowedFd};
 
-use crate::io::Errno;
+#[cfg(target_os = "linux")]
 use crate::net::xdp::SocketAddrXdp;
 pub use crate::net::{AddressFamily, Protocol, Shutdown, SocketFlags, SocketType};
 #[cfg(unix)]
@@ -281,7 +281,7 @@ pub fn bind_unix<Fd: AsFd>(sockfd: Fd, addr: &SocketAddrUnix) -> io::Result<()>
 ///  - [Linux]
 ///
 /// [Linux]: https://man7.org/linux/man-pages/man2/bind.2.html
-#[cfg(unix)]
+#[cfg(target_os = "linux")]
 #[inline]
 #[doc(alias = "bind")]
 pub fn bind_xdp<Fd: AsFd>(sockfd: Fd, addr: &SocketAddrXdp) -> io::Result<()> {

src/net/sockopt.rs

@@ -143,9 +143,8 @@
 #![doc(alias = "getsockopt")]
 #![doc(alias = "setsockopt")]
 
-use crate::net::xdp::{XdpMmapOffsets, XdpUmemReg};
 #[cfg(target_os = "linux")]
-use crate::net::xdp::{XdpOptionsFlags, XdpStatistics};
+use crate::net::xdp::{XdpMmapOffsets, XdpOptionsFlags, XdpStatistics, XdpUmemReg};
 #[cfg(not(any(
     apple,
     windows,
@@ -185,8 +184,6 @@ use alloc::string::String;
 use backend::c;
 use backend::fd::AsFd;
 use core::time::Duration;
-#[cfg(target_os = "linux")]
-use linux_raw_sys::xdp::xdp_mmap_offsets;
 
 /// Timeout identifier for use with [`set_socket_timeout`] and
 /// [`get_socket_timeout`].