diff --git a/src/scheme/scheme.rs b/src/scheme/scheme.rs
index 50927f036d..735cc0fb3d 100644
--- a/src/scheme/scheme.rs
+++ b/src/scheme/scheme.rs
@@ -61,6 +61,9 @@ pub trait Scheme {
             },
             SYS_CLOSE => self.close(packet.b),
 
+            KSMSG_MMAP_PREP => self.mmap_prep(packet.b, u64::from(packet.uid) | (u64::from(packet.gid) << 32), packet.c, MapFlags::from_bits_truncate(packet.d)),
+            KSMSG_MUNMAP => self.munmap(packet.b, u64::from(packet.uid) | (u64::from(packet.gid) << 32), packet.c),
+
             _ => Err(Error::new(ENOSYS))
         };
 
@@ -178,4 +181,14 @@ pub trait Scheme {
     fn close(&self, id: usize) -> Result<usize> {
         Err(Error::new(EBADF))
     }
+
+    #[allow(unused_variables)]
+    fn mmap_prep(&self, id: usize, offset: u64, size: usize, flags: MapFlags) -> Result<usize> {
+        Err(Error::new(EOPNOTSUPP))
+    }
+
+    #[allow(unused_variables)]
+    fn munmap(&self, id: usize, offset: u64, size: usize) -> Result<usize> {
+        Err(Error::new(EOPNOTSUPP))
+    }
 }
diff --git a/src/scheme/scheme_block.rs b/src/scheme/scheme_block.rs
index 391882746e..3ac6cf3414 100644
--- a/src/scheme/scheme_block.rs
+++ b/src/scheme/scheme_block.rs
@@ -61,6 +61,9 @@ pub trait SchemeBlock {
             },
             SYS_CLOSE => self.close(packet.b),
 
+            KSMSG_MMAP_PREP => self.mmap_prep(packet.b, u64::from(packet.uid) | (u64::from(packet.gid) << 32), packet.c, MapFlags::from_bits_truncate(packet.d)),
+            KSMSG_MUNMAP => self.munmap(packet.b, u64::from(packet.uid) | (u64::from(packet.gid) << 32), packet.c),
+
             _ => Err(Error::new(ENOSYS))
         };
 
@@ -178,4 +181,14 @@ pub trait SchemeBlock {
     fn close(&self, id: usize) -> Result<Option<usize>> {
         Err(Error::new(EBADF))
     }
+
+    #[allow(unused_variables)]
+    fn mmap_prep(&self, id: usize, offset: u64, size: usize, flags: MapFlags) -> Result<Option<usize>> {
+        Err(Error::new(EOPNOTSUPP))
+    }
+
+    #[allow(unused_variables)]
+    fn munmap(&self, id: usize, offset: u64, size: usize) -> Result<Option<usize>> {
+        Err(Error::new(EOPNOTSUPP))
+    }
 }
diff --git a/src/scheme/scheme_block_mut.rs b/src/scheme/scheme_block_mut.rs
index b7ca832479..1f65df0451 100644
--- a/src/scheme/scheme_block_mut.rs
+++ b/src/scheme/scheme_block_mut.rs
@@ -61,6 +61,9 @@ pub trait SchemeBlockMut {
             },
             SYS_CLOSE => self.close(packet.b),
 
+            KSMSG_MMAP_PREP => self.mmap_prep(packet.b, u64::from(packet.uid) | (u64::from(packet.gid) << 32), packet.c, MapFlags::from_bits_truncate(packet.d)),
+            KSMSG_MUNMAP => self.munmap(packet.b, u64::from(packet.uid) | (u64::from(packet.gid) << 32), packet.c),
+
             _ => Err(Error::new(ENOSYS))
         };
 
@@ -178,4 +181,14 @@ pub trait SchemeBlockMut {
     fn close(&mut self, id: usize) -> Result<Option<usize>> {
         Err(Error::new(EBADF))
     }
+
+    #[allow(unused_variables)]
+    fn mmap_prep(&mut self, id: usize, offset: u64, size: usize, flags: MapFlags) -> Result<Option<usize>> {
+        Err(Error::new(EOPNOTSUPP))
+    }
+
+    #[allow(unused_variables)]
+    fn munmap(&mut self, id: usize, offset: u64, size: usize) -> Result<Option<usize>> {
+        Err(Error::new(EOPNOTSUPP))
+    }
 }
diff --git a/src/scheme/scheme_mut.rs b/src/scheme/scheme_mut.rs
index a7a7a3a76a..0b166ca04c 100644
--- a/src/scheme/scheme_mut.rs
+++ b/src/scheme/scheme_mut.rs
@@ -61,6 +61,9 @@ pub trait SchemeMut {
             },
             SYS_CLOSE => self.close(packet.b),
 
+            KSMSG_MMAP_PREP => self.mmap_prep(packet.b, MapFlags::from_bits_truncate(packet.c), packet.d, u64::from(packet.uid) | (u64::from(packet.gid) << 32)),
+            KSMSG_MUNMAP => self.munmap(packet.b, packet.c, u64::from(packet.uid) | (u64::from(packet.gid) << 32)),
+
             _ => Err(Error::new(ENOSYS))
         };
 
@@ -178,4 +181,14 @@ pub trait SchemeMut {
     fn close(&mut self, id: usize) -> Result<usize> {
         Err(Error::new(EBADF))
     }
+
+    #[allow(unused_variables)]
+    fn mmap_prep(&mut self, id: usize, flags: MapFlags, size: usize, offset: u64) -> Result<usize> {
+        Err(Error::new(EOPNOTSUPP))
+    }
+
+    #[allow(unused_variables)]
+    fn munmap(&mut self, id: usize, size: usize, offset: u64) -> Result<usize> {
+        Err(Error::new(EOPNOTSUPP))
+    }
 }