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// Silence invalid warnings due to rust-lang/rust#16719
#![allow(improper_ctypes)]
pub use libc::{socket, listen, bind, accept, connect, setsockopt, sendto, recvfrom, getsockname, getpeername, recv, send};
use libc::{c_int, c_void, socklen_t, ssize_t};
use sys::uio::IoVec;
cfg_if! {
if #[cfg(target_os = "dragonfly")] {
use libc::c_uint;
pub type type_of_cmsg_len = socklen_t;
pub type type_of_cmsg_data = c_int;
pub type type_of_msg_iovlen = c_uint;
} else if #[cfg(target_os = "linux")] {
use libc::size_t;
pub type type_of_cmsg_len = size_t;
pub type type_of_cmsg_data = size_t;
pub type type_of_msg_iovlen = size_t;
} else if #[cfg(target_os = "macos")] {
use libc::c_uint;
pub type type_of_cmsg_len = socklen_t;
// OSX always aligns struct cmsghdr as if it were a 32-bit OS
pub type type_of_cmsg_data = c_uint;
pub type type_of_msg_iovlen = c_uint;
} else {
use libc::{c_uint, size_t};
pub type type_of_cmsg_len = socklen_t;
pub type type_of_cmsg_data = size_t;
pub type type_of_msg_iovlen = c_uint;
}
}
// Private because we don't expose any external functions that operate
// directly on this type; we just use it internally at FFI boundaries.
// Note that in some cases we store pointers in *const fields that the
// kernel will proceed to mutate, so users should be careful about the
// actual mutability of data pointed to by this structure.
//
// FIXME: Replace these structs with the ones defined in libc
#[repr(C)]
pub struct msghdr<'a> {
pub msg_name: *const c_void,
pub msg_namelen: socklen_t,
pub msg_iov: *const IoVec<&'a [u8]>,
pub msg_iovlen: type_of_msg_iovlen,
pub msg_control: *const c_void,
pub msg_controllen: type_of_cmsg_len,
pub msg_flags: c_int,
}
// As above, private because we don't expose any external functions that
// operate directly on this type, or any external types with a public
// cmsghdr member.
#[repr(C)]
pub struct cmsghdr {
pub cmsg_len: type_of_cmsg_len,
pub cmsg_level: c_int,
pub cmsg_type: c_int,
pub cmsg_data: [type_of_cmsg_data; 0]
}
extern {
pub fn getsockopt(
sockfd: c_int,
level: c_int,
optname: c_int,
optval: *mut c_void,
optlen: *mut socklen_t) -> c_int;
pub fn socketpair(
domain: c_int,
typ: c_int,
protocol: c_int,
sv: *mut c_int
) -> c_int;
pub fn sendmsg(sockfd: c_int, msg: *const msghdr, flags: c_int) -> ssize_t;
pub fn recvmsg(sockfd: c_int, msg: *mut msghdr, flags: c_int) -> ssize_t;
}
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