illumos: Add eventfd support

Author: pfmooney

libc-test/build.rs

@@ -707,6 +707,7 @@ fn test_solarish(target: &str) {
         "stdlib.h",
         "string.h",
         "sys/epoll.h",
+        "sys/eventfd.h",
         "sys/file.h",
         "sys/filio.h",
         "sys/ioctl.h",

src/unix/solarish/illumos.rs

@@ -18,7 +18,13 @@ s! {
 pub const AF_LOCAL: ::c_int = 1; // AF_UNIX
 pub const AF_FILE: ::c_int = 1; // AF_UNIX
 
+pub const EFD_SEMAPHORE: ::c_int = 0x1;
+pub const EFD_NONBLOCK: ::c_int = 0x800;
+pub const EFD_CLOEXEC: ::c_int = 0x80000;
+
 extern "C" {
+    pub fn eventfd(init: ::c_uint, flags: ::c_int) -> ::c_int;
+
     pub fn mincore(
         addr: ::caddr_t,
         len: ::size_t,