Enable msghdr functions on Redox (#1536)

Author: jackpot51

src/backend/libc/net/mod.rs

@@ -4,7 +4,6 @@ pub(crate) mod ext;
     windows,
     target_os = "espidf",
     target_os = "horizon",
-    target_os = "redox",
     target_os = "vita"
 )))]
 pub(crate) mod msghdr;

src/backend/libc/net/msghdr.rs

@@ -16,6 +16,7 @@ use core::mem::zeroed;
     not(any(windows, target_os = "espidf", target_os = "wasi")),
     any(
         target_os = "android",
+        target_os = "redox",
         all(
             target_os = "linux",
             not(target_env = "musl"),
@@ -30,15 +31,10 @@ fn msg_iov_len(len: usize) -> c::size_t {
 
 /// Convert the value to the `msg_iovlen` field of a `msghdr` struct.
 #[cfg(all(
-    not(any(
-        windows,
-        target_os = "espidf",
-        target_os = "redox",
-        target_os = "vita",
-        target_os = "wasi"
-    )),
+    not(any(windows, target_os = "espidf", target_os = "vita", target_os = "wasi")),
     not(any(
         target_os = "android",
+        target_os = "redox",
         all(
             target_os = "linux",
             not(target_env = "musl"),
@@ -83,7 +79,6 @@ fn msg_control_len(len: usize) -> c::socklen_t {
     target_os = "haiku",
     target_os = "hurd",
     target_os = "nto",
-    target_os = "redox",
     target_os = "vita",
     target_os = "wasi",
 )))]
@@ -179,7 +174,7 @@ pub(crate) unsafe fn with_msghdr<R>(
 }
 
 /// Create a zero-initialized message header struct value.
-#[cfg(all(unix, not(target_os = "redox")))]
+#[cfg(unix)]
 pub(crate) fn zero_msghdr() -> c::msghdr {
     // SAFETY: We can't initialize all the fields by value because on some
     // platforms the `msghdr` struct in the libc crate contains private padding

src/backend/libc/net/syscalls.rs

@@ -21,7 +21,6 @@ use core::ptr::null_mut;
     windows,
     target_os = "espidf",
     target_os = "horizon",
-    target_os = "redox",
     target_os = "vita"
 )))]
 use {
@@ -187,7 +186,6 @@ pub(crate) fn accept(sockfd: BorrowedFd<'_>) -> io::Result<OwnedFd> {
     windows,
     target_os = "espidf",
     target_os = "horizon",
-    target_os = "redox",
     target_os = "vita"
 )))]
 pub(crate) fn recvmsg(
@@ -222,7 +220,6 @@ pub(crate) fn recvmsg(
     windows,
     target_os = "espidf",
     target_os = "horizon",
-    target_os = "redox",
     target_os = "vita"
 )))]
 pub(crate) fn sendmsg(
@@ -245,7 +242,6 @@ pub(crate) fn sendmsg(
     windows,
     target_os = "espidf",
     target_os = "horizon",
-    target_os = "redox",
     target_os = "vita"
 )))]
 pub(crate) fn sendmsg_addr(

src/net/send_recv/mod.rs

@@ -15,7 +15,6 @@ pub use backend::net::send_recv::{RecvFlags, ReturnFlags, SendFlags};
     windows,
     target_os = "espidf",
     target_os = "horizon",
-    target_os = "redox",
     target_os = "vita"
 )))]
 mod msg;
@@ -24,7 +23,6 @@ mod msg;
     windows,
     target_os = "espidf",
     target_os = "horizon",
-    target_os = "redox",
     target_os = "vita"
 )))]
 pub use msg::*;