1 files changed, 96 insertions, 0 deletions
diff --git a/vendor/rustix/src/imp/libc/net/write_sockaddr.rs b/vendor/rustix/src/imp/libc/net/write_sockaddr.rs
new file mode 100644
index 000000000..adbf7255d
--- /dev/null
+++ b/vendor/rustix/src/imp/libc/net/write_sockaddr.rs
@@ -0,0 +1,96 @@
+//! The BSD sockets API requires us to read the `ss_family` field before
+//! we can interpret the rest of a `sockaddr` produced by the kernel.
+
+use super::super::c;
+use super::addr::SocketAddrStorage;
+#[cfg(unix)]
+use super::addr::SocketAddrUnix;
+use super::ext::{in6_addr_new, in_addr_new, sockaddr_in6_new};
+use crate::net::{SocketAddrAny, SocketAddrV4, SocketAddrV6};
+use core::mem::size_of;
+
+pub(crate) unsafe fn write_sockaddr(
+    addr: &SocketAddrAny,
+    storage: *mut SocketAddrStorage,
+) -> usize {
+    match addr {
+        SocketAddrAny::V4(v4) => write_sockaddr_v4(v4, storage),
+        SocketAddrAny::V6(v6) => write_sockaddr_v6(v6, storage),
+        #[cfg(unix)]
+        SocketAddrAny::Unix(unix) => write_sockaddr_unix(unix, storage),
+    }
+}
+
+pub(crate) unsafe fn encode_sockaddr_v4(v4: &SocketAddrV4) -> c::sockaddr_in {
+    c::sockaddr_in {
+        #[cfg(any(
+            target_os = "dragonfly",
+            target_os = "freebsd",
+            target_os = "ios",
+            target_os = "macos",
+            target_os = "netbsd",
+            target_os = "openbsd",
+        ))]
+        sin_len: size_of::<c::sockaddr_in>() as _,
+        sin_family: c::AF_INET as _,
+        sin_port: u16::to_be(v4.port()),
+        sin_addr: in_addr_new(u32::from_ne_bytes(v4.ip().octets())),
+        sin_zero: [0; 8_usize],
+    }
+}
+
+unsafe fn write_sockaddr_v4(v4: &SocketAddrV4, storage: *mut SocketAddrStorage) -> usize {
+    let encoded = encode_sockaddr_v4(v4);
+    core::ptr::write(storage.cast(), encoded);
+    size_of::<c::sockaddr_in>()
+}
+
+pub(crate) unsafe fn encode_sockaddr_v6(v6: &SocketAddrV6) -> c::sockaddr_in6 {
+    #[cfg(any(
+        target_os = "dragonfly",
+        target_os = "freebsd",
+        target_os = "ios",
+        target_os = "macos",
+        target_os = "netbsd",
+        target_os = "openbsd",
+    ))]
+    {
+        sockaddr_in6_new(
+            size_of::<c::sockaddr_in6>() as _,
+            c::AF_INET6 as _,
+            u16::to_be(v6.port()),
+            u32::to_be(v6.flowinfo()),
+            in6_addr_new(v6.ip().octets()),
+            v6.scope_id(),
+        )
+    }
+    #[cfg(not(any(
+        target_os = "dragonfly",
+        target_os = "freebsd",
+        target_os = "ios",
+        target_os = "macos",
+        target_os = "netbsd",
+        target_os = "openbsd",
+    )))]
+    {
+        sockaddr_in6_new(
+            c::AF_INET6 as _,
+            u16::to_be(v6.port()),
+            u32::to_be(v6.flowinfo()),
+            in6_addr_new(v6.ip().octets()),
+            v6.scope_id(),
+        )
+    }
+}
+
+unsafe fn write_sockaddr_v6(v6: &SocketAddrV6, storage: *mut SocketAddrStorage) -> usize {
+    let encoded = encode_sockaddr_v6(v6);
+    core::ptr::write(storage.cast(), encoded);
+    size_of::<c::sockaddr_in6>()
+}
+
+#[cfg(unix)]
+unsafe fn write_sockaddr_unix(unix: &SocketAddrUnix, storage: *mut SocketAddrStorage) -> usize {
+    core::ptr::write(storage.cast(), unix.unix);
+    unix.len()
+}