diff --git a/kernel/include/ioctl.hpp b/kernel/include/ioctl.hpp
new file mode 100644
index 00000000..5411589e
--- /dev/null
+++ b/kernel/include/ioctl.hpp
@@ -0,0 +1,18 @@
+//=======================================================================
+// Copyright Baptiste Wicht 2013-2016.
+// Distributed under the Boost Software License, Version 1.0.
+// (See accompanying file LICENSE_1_0.txt or copy at
+//  http://www.boost.org/LICENSE_1_0.txt)
+//=======================================================================
+
+#ifndef IOCTL_HPP
+#define IOCTL_HPP
+
+#include <types.hpp>
+#include <string.hpp>
+
+#include "ioctl_codes.hpp"
+
+int64_t ioctl(const std::string& device, ioctl_request request, void* data);
+
+#endif
diff --git a/kernel/src/ioctl.cpp b/kernel/src/ioctl.cpp
new file mode 100644
index 00000000..36780908
--- /dev/null
+++ b/kernel/src/ioctl.cpp
@@ -0,0 +1,19 @@
+//=======================================================================
+// Copyright Baptiste Wicht 2013-2016.
+// Distributed under the Boost Software License, Version 1.0.
+// (See accompanying file LICENSE_1_0.txt or copy at
+//  http://www.boost.org/LICENSE_1_0.txt)
+//=======================================================================
+
+#include "ioctl.hpp"
+#include "errors.hpp"
+
+int64_t ioctl(const std::string& device, ioctl_request request, void* data){
+    if(request == ioctl_request::GET_BLK_SIZE){
+        *reinterpret_cast<size_t*>(data) = 0;
+
+        return 0;
+    }
+
+    return std::ERROR_INVALID_REQUEST;
+}
diff --git a/kernel/src/system_calls.cpp b/kernel/src/system_calls.cpp
index ffb25bb6..d6803607 100644
--- a/kernel/src/system_calls.cpp
+++ b/kernel/src/system_calls.cpp
@@ -17,6 +17,9 @@
 #include "vesa.hpp"
 #include "mouse.hpp"
 #include "vfs/vfs.hpp"
+#include "ioctl.hpp"
+
+//TODO Split this file
 
 namespace {
 
@@ -275,6 +278,14 @@ void sc_mouse_y(interrupt::syscall_regs* regs){
     regs->rax = mouse::y();
 }
 
+void sc_ioctl(interrupt::syscall_regs* regs){
+    auto device = reinterpret_cast<const char*>(regs->rbx);
+    auto request = regs->rcx;
+    auto data = reinterpret_cast<void*>(regs->rdx);
+
+    regs->rax = ioctl(device, static_cast<ioctl_request>(request), data);
+}
+
 } //End of anonymous namespace
 
 void system_call_entry(interrupt::syscall_regs* regs){
@@ -450,6 +461,10 @@ void system_call_entry(interrupt::syscall_regs* regs){
             sc_mouse_y(regs);
             break;
 
+        case 0x2000:
+            sc_ioctl(regs);
+            break;
+
         default:
             k_print_line("Invalid system call");
             break;
diff --git a/tlib/include/errors.hpp b/tlib/include/errors.hpp
index 5f0581ad..b4ba383b 100644
--- a/tlib/include/errors.hpp
+++ b/tlib/include/errors.hpp
@@ -29,6 +29,7 @@ constexpr const size_t ERROR_PERMISSION_DENIED = 13;
 constexpr const size_t ERROR_INVALID_OFFSET = 14;
 constexpr const size_t ERROR_UNSUPPORTED = 15;
 constexpr const size_t ERROR_INVALID_COUNT = 16;
+constexpr const size_t ERROR_INVALID_REQUEST = 17;
 
 inline const char* error_message(size_t error){
     switch(error){
diff --git a/tlib/include/io.hpp b/tlib/include/io.hpp
new file mode 100644
index 00000000..e998873f
--- /dev/null
+++ b/tlib/include/io.hpp
@@ -0,0 +1,19 @@
+//=======================================================================
+// Copyright Baptiste Wicht 2013-2016.
+// Distributed under the Boost Software License, Version 1.0.
+// (See accompanying file LICENSE_1_0.txt or copy at
+//  http://www.boost.org/LICENSE_1_0.txt)
+//=======================================================================
+
+#ifndef IO_HPP
+#define IO_HPP
+
+#include <types.hpp>
+#include <expected.hpp>
+#include <string.hpp>
+
+#include "ioctl_codes.hpp"
+
+int64_t ioctl(const std::string& device, ioctl_request request, void* data);
+
+#endif
diff --git a/tlib/include/ioctl_codes.hpp b/tlib/include/ioctl_codes.hpp
new file mode 100644
index 00000000..fd09dc02
--- /dev/null
+++ b/tlib/include/ioctl_codes.hpp
@@ -0,0 +1,17 @@
+//=======================================================================
+// Copyright Baptiste Wicht 2013-2016.
+// Distributed under the Boost Software License, Version 1.0.
+// (See accompanying file LICENSE_1_0.txt or copy at
+//  http://www.boost.org/LICENSE_1_0.txt)
+//=======================================================================
+
+#ifndef IOCTL_CODES_H
+#define IOCTL_CODE_H
+
+#include <types.hpp>
+
+enum class ioctl_request : size_t {
+    GET_BLK_SIZE = 1
+};
+
+#endif
diff --git a/tlib/src/io.cpp b/tlib/src/io.cpp
new file mode 100644
index 00000000..016457d0
--- /dev/null
+++ b/tlib/src/io.cpp
@@ -0,0 +1,17 @@
+//=======================================================================
+// Copyright Baptiste Wicht 2013-2016.
+// Distributed under the Boost Software License, Version 1.0.
+// (See accompanying file LICENSE_1_0.txt or copy at
+//  http://www.boost.org/LICENSE_1_0.txt)
+//=======================================================================
+
+#include <io.hpp>
+
+int64_t ioctl(const std::string& device, ioctl_request request, void* data){
+    int64_t code;
+    asm volatile("mov rax, 0x2000; mov rbx, %[path]; mov rcx, %[request]; mov rdx, %[data]; int 50; mov %[code], rax"
+        : [code] "=m" (code)
+        : [path] "g" (reinterpret_cast<size_t>(device.c_str())), [request] "g" (static_cast<size_t>(request)), [data] "g" (reinterpret_cast<size_t>(data))
+        : "rax", "rbx", "rcx", "rdx");
+    return code;
+}