diff -r 208cb7a9d0fa -r a8be2cff613f rust/chg/src/procutil.rs --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/rust/chg/src/procutil.rs Mon Sep 24 16:22:03 2018 +0900 @@ -0,0 +1,25 @@ +// Copyright 2018 Yuya Nishihara +// +// This software may be used and distributed according to the terms of the +// GNU General Public License version 2 or any later version. + +//! Low-level utility for signal and process handling. + +use libc::{c_int, size_t, ssize_t}; +use std::io; +use std::os::unix::io::RawFd; + +#[link(name = "procutil", kind = "static")] +extern "C" { + // sendfds.c + fn sendfds(sockfd: c_int, fds: *const c_int, fdlen: size_t) -> ssize_t; +} + +/// Sends file descriptors via the given socket. +pub fn send_raw_fds(sock_fd: RawFd, fds: &[RawFd]) -> io::Result<()> { + let r = unsafe { sendfds(sock_fd, fds.as_ptr(), fds.len() as size_t) }; + if r < 0 { + return Err(io::Error::last_os_error()); + } + Ok(()) +}