diff --git a/Cargo.toml b/Cargo.toml
index 2118dc8..642a384 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "redox_syscall"
-version = "0.1.10"
+version = "0.1.11"
 description = "A Rust library to access raw Redox system calls"
 license = "MIT"
 authors = ["Jeremy Soller <jackpot51@gmail.com>"]
diff --git a/src/call.rs b/src/call.rs
index 2689155..939ebf5 100644
--- a/src/call.rs
+++ b/src/call.rs
@@ -181,11 +181,6 @@ pub fn lseek(fd: usize, offset: isize, whence: usize) -> Result<usize> {
     unsafe { syscall3(SYS_LSEEK, fd, offset as usize, whence) }
 }
 
-/// Make a directory, with permissions `mode`
-pub fn mkdir(path: &str, mode: u16) -> Result<usize> {
-    unsafe { syscall3(SYS_MKDIR, path.as_ptr() as usize, path.len(), mode as usize) }
-}
-
 /// Make a new scheme namespace
 pub fn mkns(schemes: &[[usize; 2]]) -> Result<usize> {
     unsafe { syscall2(SYS_MKNS, schemes.as_ptr() as usize, schemes.len()) }
diff --git a/src/flag.rs b/src/flag.rs
index 8565c8f..b031ba6 100644
--- a/src/flag.rs
+++ b/src/flag.rs
@@ -41,6 +41,7 @@ pub const O_CLOEXEC: usize =    0x0100_0000;
 pub const O_CREAT: usize =      0x0200_0000;
 pub const O_TRUNC: usize =      0x0400_0000;
 pub const O_EXCL: usize =       0x0800_0000;
+pub const O_DIRECTORY: usize =  0x1000_0000;
 pub const O_ACCMODE: usize =    O_RDONLY | O_WRONLY | O_RDWR;
 
 pub const SEEK_SET: usize = 0;
diff --git a/src/number.rs b/src/number.rs
index 5dacea5..719c8af 100644
--- a/src/number.rs
+++ b/src/number.rs
@@ -12,7 +12,6 @@ pub const SYS_RET_FILE: usize = 0x0010_0000;
 
 pub const SYS_LINK: usize =     SYS_CLASS_PATH | SYS_ARG_PATH | 9;
 pub const SYS_OPEN: usize =     SYS_CLASS_PATH | SYS_RET_FILE | 5;
-pub const SYS_MKDIR: usize =    SYS_CLASS_PATH | 39;
 pub const SYS_CHMOD: usize =    SYS_CLASS_PATH | 15;
 pub const SYS_RMDIR: usize =    SYS_CLASS_PATH | 84;
 pub const SYS_UNLINK: usize =   SYS_CLASS_PATH | 10;
diff --git a/src/scheme.rs b/src/scheme.rs
index d0cb8fe..d322f0b 100644
--- a/src/scheme.rs
+++ b/src/scheme.rs
@@ -6,7 +6,6 @@ pub trait Scheme {
     fn handle(&self, packet: &mut Packet) {
         packet.a = Error::mux(match packet.a {
             SYS_OPEN => self.open(unsafe { slice::from_raw_parts(packet.b as *const u8, packet.c) }, packet.d, packet.uid, packet.gid),
-            SYS_MKDIR => self.mkdir(unsafe { slice::from_raw_parts(packet.b as *const u8, packet.c) }, packet.d as u16, packet.uid, packet.gid),
             SYS_CHMOD => self.chmod(unsafe { slice::from_raw_parts(packet.b as *const u8, packet.c) }, packet.d as u16, packet.uid, packet.gid),
             SYS_RMDIR => self.rmdir(unsafe { slice::from_raw_parts(packet.b as *const u8, packet.c) }, packet.uid, packet.gid),
             SYS_UNLINK => self.unlink(unsafe { slice::from_raw_parts(packet.b as *const u8, packet.c) }, packet.uid, packet.gid),
@@ -36,11 +35,6 @@ pub trait Scheme {
         Err(Error::new(ENOENT))
     }
 
-    #[allow(unused_variables)]
-    fn mkdir(&self, path: &[u8], mode: u16, uid: u32, gid: u32) -> Result<usize> {
-        Err(Error::new(ENOENT))
-    }
-
     #[allow(unused_variables)]
     fn chmod(&self, path: &[u8], mode: u16, uid: u32, gid: u32) -> Result<usize> {
         Err(Error::new(ENOENT))
@@ -127,7 +121,6 @@ pub trait SchemeMut {
     fn handle(&mut self, packet: &mut Packet) {
         packet.a = Error::mux(match packet.a {
             SYS_OPEN => self.open(unsafe { slice::from_raw_parts(packet.b as *const u8, packet.c) }, packet.d, packet.uid, packet.gid),
-            SYS_MKDIR => self.mkdir(unsafe { slice::from_raw_parts(packet.b as *const u8, packet.c) }, packet.d as u16, packet.uid, packet.gid),
             SYS_CHMOD => self.chmod(unsafe { slice::from_raw_parts(packet.b as *const u8, packet.c) }, packet.d as u16, packet.uid, packet.gid),
             SYS_RMDIR => self.rmdir(unsafe { slice::from_raw_parts(packet.b as *const u8, packet.c) }, packet.uid, packet.gid),
             SYS_UNLINK => self.unlink(unsafe { slice::from_raw_parts(packet.b as *const u8, packet.c) }, packet.uid, packet.gid),
@@ -156,11 +149,6 @@ pub trait SchemeMut {
         Err(Error::new(ENOENT))
     }
 
-    #[allow(unused_variables)]
-    fn mkdir(&mut self, path: &[u8], mode: u16, uid: u32, gid: u32) -> Result<usize> {
-        Err(Error::new(ENOENT))
-    }
-
     #[allow(unused_variables)]
     fn chmod(&self, path: &[u8], mode: u16, uid: u32, gid: u32) -> Result<usize> {
         Err(Error::new(ENOENT))