1 files changed, 12 insertions, 0 deletions
diff --git a/src/libstd/sys/unix/fd.rs b/src/libstd/sys/unix/fd.rs
index 8a99836912a..1ef7ffacfcf 100644
--- a/src/libstd/sys/unix/fd.rs
+++ b/src/libstd/sys/unix/fd.rs
@@ -64,6 +64,11 @@ impl FileDesc {
         Ok(ret as usize)
     }
 
+    #[inline]
+    pub fn is_read_vectored(&self) -> bool {
+        true
+    }
+
     pub fn read_to_end(&self, buf: &mut Vec<u8>) -> io::Result<usize> {
         let mut me = self;
         (&mut me).read_to_end(buf)
@@ -116,6 +121,11 @@ impl FileDesc {
         Ok(ret as usize)
     }
 
+    #[inline]
+    pub fn is_write_vectored(&self) -> bool {
+        true
+    }
+
     pub fn write_at(&self, buf: &[u8], offset: u64) -> io::Result<usize> {
         #[cfg(target_os = "android")]
         use super::android::cvt_pwrite64;
@@ -153,6 +163,7 @@ impl FileDesc {
     #[cfg(not(any(
         target_env = "newlib",
         target_os = "solaris",
+        target_os = "illumos",
         target_os = "emscripten",
         target_os = "fuchsia",
         target_os = "l4re",
@@ -169,6 +180,7 @@ impl FileDesc {
     #[cfg(any(
         target_env = "newlib",
         target_os = "solaris",
+        target_os = "illumos",
         target_os = "emscripten",
         target_os = "fuchsia",
         target_os = "l4re",