refactor: cfg for ioctl/* & ptrace/* (#2222)

Author: SteveLauC

src/sys/ioctl/mod.rs

@@ -227,15 +227,11 @@
 //! ```
 use cfg_if::cfg_if;
 
-#[cfg(any(target_os = "android", target_os = "linux", target_os = "redox"))]
+#[cfg(any(linux_android, target_os = "redox"))]
 #[macro_use]
 mod linux;
 
-#[cfg(any(
-    target_os = "android",
-    target_os = "linux",
-    target_os = "redox"
-))]
+#[cfg(any(linux_android, target_os = "redox"))]
 pub use self::linux::*;
 
 #[cfg(any(bsd, target_os = "illumos", target_os = "haiku",))]

src/sys/ptrace/bsd.rs

@@ -9,10 +9,7 @@ use std::ptr;
 pub type RequestType = c_int;
 
 cfg_if! {
-    if #[cfg(any(target_os = "dragonfly",
-                 target_os = "freebsd",
-                 target_os = "macos",
-                 target_os = "openbsd"))] {
+    if #[cfg(any(freebsdlike, target_os = "macos", target_os = "openbsd"))] {
         #[doc(hidden)]
         pub type AddressType = *mut ::libc::c_char;
     } else {
@@ -37,9 +34,7 @@ libc_enum! {
         PT_WRITE_U,
         PT_CONTINUE,
         PT_KILL,
-        #[cfg(any(any(target_os = "dragonfly",
-                  target_os = "freebsd",
-                  target_os = "macos"),
+        #[cfg(any(any(freebsdlike, target_os = "macos"),
                   all(target_os = "openbsd", target_arch = "x86_64"),
                   all(target_os = "netbsd", any(target_arch = "x86_64",
                                                 target_arch = "powerpc"))))]

src/sys/ptrace/mod.rs

@@ -7,17 +7,15 @@ mod linux;
 pub use self::linux::*;
 
 #[cfg(any(
-    target_os = "dragonfly",
-    target_os = "freebsd",
+    freebsdlike,
     target_os = "macos",
     target_os = "netbsd",
     target_os = "openbsd"
 ))]
 mod bsd;
 
 #[cfg(any(
-    target_os = "dragonfly",
-    target_os = "freebsd",
+    freebsdlike,
     target_os = "macos",
     target_os = "netbsd",
     target_os = "openbsd"