1 files changed, 23 insertions, 9 deletions

diff --git a/src/mount/bsd.rs b/src/mount/bsd.rs
index 109522f9..1ba8b809 100644
--- a/src/mount/bsd.rs
+++ b/src/mount/bsd.rs
@@ -1,16 +1,22 @@
+#[cfg(target_os = "freebsd")]
 use crate::{
     Error,
+};
+use crate::{
     Errno,
     NixPath,
     Result,
 };
-use libc::{c_char, c_int, c_uint, c_void};
+#[cfg(target_os = "freebsd")]
+use libc::{c_char, c_uint, c_void};
+use libc::c_int;
+#[cfg(target_os = "freebsd")]
 use std::{
     borrow::Cow,
     ffi::{CString, CStr},
+    marker::PhantomData,
     fmt,
     io,
-    marker::PhantomData,
 };
 
 
@@ -110,12 +116,14 @@ libc_bitflags!(
 ///
 /// It wraps an [`Errno`], but also may contain an additional message returned
 /// by `nmount(2)`.
+#[cfg(target_os = "freebsd")]
 #[derive(Debug)]
 pub struct NmountError {
     errno: Error,
     errmsg: Option<String>
 }
 
+#[cfg(target_os = "freebsd")]
 impl NmountError {
     /// Returns the additional error string sometimes generated by `nmount(2)`.
     pub fn errmsg(&self) -> Option<&str> {
@@ -135,8 +143,10 @@ impl NmountError {
     }
 }
 
+#[cfg(target_os = "freebsd")]
 impl std::error::Error for NmountError {}
 
+#[cfg(target_os = "freebsd")]
 impl fmt::Display for NmountError {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
         if let Some(errmsg) = &self.errmsg {
@@ -147,6 +157,7 @@ impl fmt::Display for NmountError {
     }
 }
 
+#[cfg(target_os = "freebsd")]
 impl From<NmountError> for io::Error {
     fn from(err: NmountError) -> Self {
         err.errno.into()
@@ -154,6 +165,7 @@ impl From<NmountError> for io::Error {
 }
 
 /// Result type of [`Nmount::nmount`].
+#[cfg(target_os = "freebsd")]
 pub type NmountResult = std::result::Result<(), NmountError>;
 
 /// Mount a FreeBSD file system.
@@ -425,13 +437,15 @@ impl<'a> Drop for Nmount<'a> {
 ///
 /// Useful flags include
 /// * `MNT_FORCE` -     Unmount even if still in use.
-/// * `MNT_BYFSID` -    `mountpoint` is not a path, but a file system ID
-///                     encoded as `FSID:val0:val1`, where `val0` and `val1`
-///                     are the contents of the `fsid_t val[]` array in decimal.
-///                     The file system that has the specified file system ID
-///                     will be unmounted.  See
-///                     [`statfs`](crate::sys::statfs::statfs) to determine the
-///                     `fsid`.
+#[cfg_attr(target_os = "freebsd", doc = "
+* `MNT_BYFSID` -    `mountpoint` is not a path, but a file system ID
+                    encoded as `FSID:val0:val1`, where `val0` and `val1`
+                    are the contents of the `fsid_t val[]` array in decimal.
+                    The file system that has the specified file system ID
+                    will be unmounted.  See
+                    [`statfs`](crate::sys::statfs::statfs) to determine the
+                    `fsid`.
+")]
 pub fn unmount<P>(mountpoint: &P, flags: MntFlags) -> Result<()>
     where P: ?Sized + NixPath
 {