Add GNU/Hurd support

Author: sthibaul

.github/workflows/main.yml

@@ -71,7 +71,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        target: ["armv7-sony-vita-newlibeabihf"]
+        target: ["armv7-sony-vita-newlibeabihf", "i686-unknown-hurd-gnu"]
     steps:
     - uses: actions/checkout@v3
     - uses: dtolnay/rust-toolchain@nightly
@@ -108,7 +108,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        target: ["armv7-sony-vita-newlibeabihf"]
+        target: ["armv7-sony-vita-newlibeabihf", "i686-unknown-hurd-gnu"]
     steps:
     - uses: actions/checkout@v3
     - uses: dtolnay/rust-toolchain@nightly # NOTE: need nightly for `doc_cfg` feature.

Cargo.toml

@@ -35,7 +35,7 @@ targets = ["aarch64-apple-ios", "aarch64-linux-android", "x86_64-apple-darwin",
 features = ["all"]
 
 [target."cfg(unix)".dependencies]
-libc = "0.2.149"
+libc = "0.2.150"
 
 [target.'cfg(windows)'.dependencies.windows-sys]
 version = "0.48"

src/socket.rs

@@ -760,6 +760,7 @@ const fn set_common_type(ty: Type) -> Type {
         target_os = "dragonfly",
         target_os = "freebsd",
         target_os = "fuchsia",
+        target_os = "hurd",
         target_os = "illumos",
         target_os = "linux",
         target_os = "netbsd",
@@ -786,6 +787,7 @@ fn set_common_flags(socket: Socket) -> io::Result<Socket> {
             target_os = "dragonfly",
             target_os = "freebsd",
             target_os = "fuchsia",
+            target_os = "hurd",
             target_os = "illumos",
             target_os = "linux",
             target_os = "netbsd",
@@ -1307,6 +1309,7 @@ impl Socket {
     #[cfg(not(any(
         target_os = "dragonfly",
         target_os = "haiku",
+        target_os = "hurd",
         target_os = "netbsd",
         target_os = "openbsd",
         target_os = "redox",
@@ -1344,6 +1347,7 @@ impl Socket {
     #[cfg(not(any(
         target_os = "dragonfly",
         target_os = "haiku",
+        target_os = "hurd",
         target_os = "netbsd",
         target_os = "openbsd",
         target_os = "redox",
@@ -1521,6 +1525,7 @@ impl Socket {
         target_os = "aix",
         target_os = "dragonfly",
         target_os = "fuchsia",
+        target_os = "hurd",
         target_os = "illumos",
         target_os = "netbsd",
         target_os = "openbsd",
@@ -1551,6 +1556,7 @@ impl Socket {
         target_os = "aix",
         target_os = "dragonfly",
         target_os = "fuchsia",
+        target_os = "hurd",
         target_os = "illumos",
         target_os = "netbsd",
         target_os = "openbsd",
@@ -1775,6 +1781,7 @@ impl Socket {
         target_os = "redox",
         target_os = "solaris",
         target_os = "haiku",
+        target_os = "hurd",
         target_os = "espidf",
         target_os = "vita",
     )))]
@@ -1799,6 +1806,7 @@ impl Socket {
         target_os = "redox",
         target_os = "solaris",
         target_os = "haiku",
+        target_os = "hurd",
         target_os = "espidf",
         target_os = "vita",
     )))]

src/sys/unix.rs

@@ -121,6 +121,7 @@ pub(crate) use libc::ipv6_mreq as Ipv6Mreq;
 #[cfg(not(any(
     target_os = "dragonfly",
     target_os = "fuchsia",
+    target_os = "hurd",
     target_os = "illumos",
     target_os = "netbsd",
     target_os = "openbsd",
@@ -143,6 +144,7 @@ pub(crate) use libc::IP_HDRINCL;
     target_os = "redox",
     target_os = "solaris",
     target_os = "haiku",
+    target_os = "hurd",
     target_os = "nto",
     target_os = "espidf",
     target_os = "vita",
@@ -179,6 +181,7 @@ pub(crate) use libc::{
 #[cfg(not(any(
     target_os = "dragonfly",
     target_os = "haiku",
+    target_os = "hurd",
     target_os = "netbsd",
     target_os = "openbsd",
     target_os = "redox",
@@ -329,6 +332,7 @@ type IovLen = usize;
     target_os = "freebsd",
     target_os = "fuchsia",
     target_os = "haiku",
+    target_os = "hurd",
     target_os = "illumos",
     target_os = "ios",
     target_os = "macos",
@@ -429,6 +433,7 @@ impl Type {
             target_os = "dragonfly",
             target_os = "freebsd",
             target_os = "fuchsia",
+            target_os = "hurd",
             target_os = "illumos",
             target_os = "linux",
             target_os = "netbsd",
@@ -446,6 +451,7 @@ impl Type {
                 target_os = "dragonfly",
                 target_os = "freebsd",
                 target_os = "fuchsia",
+                target_os = "hurd",
                 target_os = "illumos",
                 target_os = "linux",
                 target_os = "netbsd",
@@ -464,6 +470,7 @@ impl Type {
         target_os = "dragonfly",
         target_os = "freebsd",
         target_os = "fuchsia",
+        target_os = "hurd",
         target_os = "illumos",
         target_os = "linux",
         target_os = "netbsd",

tests/socket.rs

@@ -348,6 +348,7 @@ fn set_cloexec() {
         target_os = "dragonfly",
         target_os = "freebsd",
         target_os = "fuchsia",
+        target_os = "hurd",
         target_os = "linux",
         target_os = "netbsd",
         target_os = "openbsd"