haiku: enable mman

* no mlockall

Author: Al Hoang

src/sys/mman.rs

@@ -351,6 +351,7 @@ libc_bitflags!{
     }
 }
 
+#[cfg(not(target_os = "haiku"))]
 libc_bitflags!{
     /// Flags for [`mlockall`].
     pub struct MlockAllFlags: c_int {
@@ -393,6 +394,7 @@ pub unsafe fn munlock(addr: *const c_void, length: size_t) -> Result<()> {
 /// Locked pages never move to the swap area. For more information, see [`mlockall(2)`].
 ///
 /// [`mlockall(2)`]: https://man7.org/linux/man-pages/man2/mlockall.2.html
+#[cfg(not(target_os = "haiku"))]
 pub fn mlockall(flags: MlockAllFlags) -> Result<()> {
     unsafe { Errno::result(libc::mlockall(flags.bits())) }.map(drop)
 }

src/sys/mod.rs

@@ -52,7 +52,7 @@ feature! {
     pub mod memfd;
 }
 
-#[cfg(not(any(target_os = "redox", target_os = "haiku")))]
+#[cfg(not(any(target_os = "redox")))]
 feature! {
     #![feature = "mman"]
     pub mod mman;

test/sys/mod.rs

@@ -11,7 +11,7 @@ mod test_signal;
           target_os = "macos",
           target_os = "netbsd"))]
 mod test_aio;
-#[cfg(not(any(target_os = "redox", target_os = "haiku")))]
+#[cfg(not(any(target_os = "redox")))]
 mod test_mman;
 #[cfg(target_os = "linux")]
 mod test_signalfd;