Merge pull request #1704 from slp/copy_file_range

Add copy_file_range to linux_like

src/unix/linux_like/linux/gnu/mod.rs

@@ -1198,6 +1198,14 @@ extern "C" {
     pub fn ntp_adjtime(buf: *mut timex) -> ::c_int;
     #[link_name = "ntp_gettimex"]
     pub fn ntp_gettime(buf: *mut ntptimeval) -> ::c_int;
+    pub fn copy_file_range(
+        fd_in: ::c_int,
+        off_in: *mut ::off64_t,
+        fd_out: ::c_int,
+        off_out: *mut ::off64_t,
+        len: ::size_t,
+        flags: ::c_uint,
+    ) -> ::ssize_t;
 }
 
 #[link(name = "util")]