diff --git a/src/number.rs b/src/number.rs
index 2e69098a7bbe85f71ac1523bf390ec3100005a59..6572cc2ffd47ad56d089c73d68d132ecc7a6ceb6 100644
--- a/src/number.rs
+++ b/src/number.rs
@@ -30,7 +30,8 @@ pub const SYS_FEXEC: usize =    SYS_CLASS_FILE | 11;
 pub const SYS_FMAP: usize =     SYS_CLASS_FILE | SYS_ARG_SLICE | 90;
 pub const SYS_FMAP2: usize =    SYS_CLASS_FILE | SYS_ARG_SLICE | 900;
 pub const SYS_FUNMAP: usize =   SYS_CLASS_FILE | 91;
-pub const SYS_FUNMAP2: usize =   SYS_CLASS_FILE | 92;
+pub const SYS_FUNMAP2: usize =  SYS_CLASS_FILE | 92;
+pub const SYS_FUNMAP3: usize =  SYS_CLASS_FILE | 95;
 pub const SYS_FPATH: usize =    SYS_CLASS_FILE | SYS_ARG_MSLICE | 928;
 pub const SYS_FRENAME: usize =  SYS_CLASS_FILE | SYS_ARG_PATH | 38;
 pub const SYS_FSTAT: usize =    SYS_CLASS_FILE | SYS_ARG_MSLICE | 28;
diff --git a/src/scheme/scheme.rs b/src/scheme/scheme.rs
index bc2476d3739cdfe2f0a3b7b7696299dcaf321dab..13725fc32c1663842dc754ba9c13d4f4f36bc80c 100644
--- a/src/scheme/scheme.rs
+++ b/src/scheme/scheme.rs
@@ -33,6 +33,7 @@ pub trait Scheme {
             },
             SYS_FUNMAP => self.funmap(packet.b),
             SYS_FUNMAP2 => self.funmap2(packet.b, packet.c),
+            SYS_FUNMAP3 => self.funmap3(packet.b, packet.c, packet.d),
             SYS_FPATH => self.fpath(packet.b, unsafe { slice::from_raw_parts_mut(packet.c as *mut u8, packet.d) }),
             SYS_FRENAME => self.frename(packet.b, unsafe { slice::from_raw_parts(packet.c as *const u8, packet.d) }, packet.uid, packet.gid),
             SYS_FSTAT => if packet.d >= mem::size_of::<Stat>() {
@@ -144,7 +145,12 @@ pub trait Scheme {
     }
 
     #[allow(unused_variables)]
-    fn funmap2(&self, address: usize, length: usize) -> Result<usize> {
+    fn funmap2(&self, address: usize, size: usize) -> Result<usize> {
+        Ok(0)
+    }
+
+    #[allow(unused_variables)]
+    fn funmap3(&self, id: usize, address: usize, size: usize) -> Result<usize> {
         Ok(0)
     }
 
diff --git a/src/scheme/scheme_block.rs b/src/scheme/scheme_block.rs
index 772a74c76d6228805a6af1fc30ec3a73245e2a67..bb29924d01d1a0feba77a54d1156cfd6e17cf83c 100644
--- a/src/scheme/scheme_block.rs
+++ b/src/scheme/scheme_block.rs
@@ -33,6 +33,7 @@ pub trait SchemeBlock {
             },
             SYS_FUNMAP => self.funmap(packet.b),
             SYS_FUNMAP2 => self.funmap2(packet.b, packet.c),
+            SYS_FUNMAP3 => self.funmap3(packet.b, packet.c, packet.d),
             SYS_FPATH => self.fpath(packet.b, unsafe { slice::from_raw_parts_mut(packet.c as *mut u8, packet.d) }),
             SYS_FRENAME => self.frename(packet.b, unsafe { slice::from_raw_parts(packet.c as *const u8, packet.d) }, packet.uid, packet.gid),
             SYS_FSTAT => if packet.d >= mem::size_of::<Stat>() {
@@ -144,7 +145,12 @@ pub trait SchemeBlock {
     }
 
     #[allow(unused_variables)]
-    fn funmap2(&self, address: usize, length: usize) -> Result<Option<usize>> {
+    fn funmap2(&self, address: usize, size: usize) -> Result<Option<usize>> {
+        Ok(Some(0))
+    }
+
+    #[allow(unused_variables)]
+    fn funmap3(&self, id: usize, address: usize, size: usize) -> Result<Option<usize>> {
         Ok(Some(0))
     }
 
diff --git a/src/scheme/scheme_block_mut.rs b/src/scheme/scheme_block_mut.rs
index e2f904006eac29ca7dc8992f1e5c1f1bf127f2e0..160b84a9991a16fbffb0bdeb41ad38642626b1ba 100644
--- a/src/scheme/scheme_block_mut.rs
+++ b/src/scheme/scheme_block_mut.rs
@@ -33,6 +33,7 @@ pub trait SchemeBlockMut {
             },
             SYS_FUNMAP => self.funmap(packet.b),
             SYS_FUNMAP2 => self.funmap2(packet.b, packet.c),
+            SYS_FUNMAP3 => self.funmap3(packet.b, packet.c, packet.d),
             SYS_FPATH => self.fpath(packet.b, unsafe { slice::from_raw_parts_mut(packet.c as *mut u8, packet.d) }),
             SYS_FRENAME => self.frename(packet.b, unsafe { slice::from_raw_parts(packet.c as *const u8, packet.d) }, packet.uid, packet.gid),
             SYS_FSTAT => if packet.d >= mem::size_of::<Stat>() {
@@ -144,7 +145,12 @@ pub trait SchemeBlockMut {
     }
 
     #[allow(unused_variables)]
-    fn funmap2(&mut self, address: usize, length: usize) -> Result<Option<usize>> {
+    fn funmap2(&mut self, address: usize, size: usize) -> Result<Option<usize>> {
+        Ok(Some(0))
+    }
+
+    #[allow(unused_variables)]
+    fn funmap3(&mut self, id: usize, address: usize, size: usize) -> Result<Option<usize>> {
         Ok(Some(0))
     }
 
diff --git a/src/scheme/scheme_mut.rs b/src/scheme/scheme_mut.rs
index 8cfe110f9c394bdf527d99034d68fab832756c70..a6f0bb1e1460c361c267c77cc2c0691ff4c36cc6 100644
--- a/src/scheme/scheme_mut.rs
+++ b/src/scheme/scheme_mut.rs
@@ -33,6 +33,7 @@ pub trait SchemeMut {
             },
             SYS_FUNMAP => self.funmap(packet.b),
             SYS_FUNMAP2 => self.funmap2(packet.b, packet.c),
+            SYS_FUNMAP3 => self.funmap3(packet.b, packet.c, packet.d),
             SYS_FPATH => self.fpath(packet.b, unsafe { slice::from_raw_parts_mut(packet.c as *mut u8, packet.d) }),
             SYS_FRENAME => self.frename(packet.b, unsafe { slice::from_raw_parts(packet.c as *const u8, packet.d) }, packet.uid, packet.gid),
             SYS_FSTAT => if packet.d >= mem::size_of::<Stat>() {
@@ -144,7 +145,12 @@ pub trait SchemeMut {
     }
 
     #[allow(unused_variables)]
-    fn funmap2(&mut self, address: usize, length: usize) -> Result<usize> {
+    fn funmap2(&mut self, address: usize, size: usize) -> Result<usize> {
+        Ok(0)
+    }
+
+    #[allow(unused_variables)]
+    fn funmap3(&mut self, id: usize, address: usize, size: usize) -> Result<usize> {
         Ok(0)
     }