diff --git a/libmaxsi/include/unistd.h b/libmaxsi/include/unistd.h
index c1252cf8..00e1738c 100644
--- a/libmaxsi/include/unistd.h
+++ b/libmaxsi/include/unistd.h
@@ -1,6 +1,6 @@
-/******************************************************************************
+/*******************************************************************************
 
-	COPYRIGHT(C) JONAS 'SORTIE' TERMANSEN 2011.
+	COPYRIGHT(C) JONAS 'SORTIE' TERMANSEN 2011, 2012.
 
 	This file is part of LibMaxsi.
 
@@ -11,8 +11,8 @@
 
 	LibMaxsi is distributed in the hope that it will be useful, but WITHOUT ANY
 	WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
-	FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for
-	more details.
+	FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
+	details.
 
 	You should have received a copy of the GNU Lesser General Public License
 	along with LibMaxsi. If not, see <http://www.gnu.org/licenses/>.
@@ -21,7 +21,7 @@
 	The <unistd.h> header defines miscellaneous symbolic constants and types,
 	and declares miscellaneous functions.
 
-******************************************************************************/
+*******************************************************************************/
 
 /* TODO: POSIX-1.2008 compliance is only partial */
 
@@ -119,8 +119,6 @@ int lockf(int, int, off_t);
 int nice(int);
 long pathconf(const char*, int);
 int pause(void);
-ssize_t pread(int, void*, size_t, off_t);
-ssize_t pwrite(int, const void*, size_t, off_t);
 ssize_t readlink(const char* restrict, char* restrict, size_t);
 ssize_t readlinkat(int, const char* restrict, char* restrict, size_t);
 int setegid(gid_t);
@@ -165,6 +163,8 @@ pid_t getppid(void);
 int isatty(int);
 off_t lseek(int, off_t, int);
 int pipe(int [2]);
+ssize_t pread(int, void*, size_t, off_t);
+ssize_t pwrite(int, const void*, size_t, off_t);
 ssize_t read(int, void*, size_t);
 int rmdir(const char*);
 unsigned sleep(unsigned);
diff --git a/libmaxsi/io.cpp b/libmaxsi/io.cpp
index 9f42b8c5..5c768567 100644
--- a/libmaxsi/io.cpp
+++ b/libmaxsi/io.cpp
@@ -1,6 +1,6 @@
-/******************************************************************************
+/*******************************************************************************
 
-	COPYRIGHT(C) JONAS 'SORTIE' TERMANSEN 2011.
+	COPYRIGHT(C) JONAS 'SORTIE' TERMANSEN 2011, 2012.
 
 	This file is part of LibMaxsi.
 
@@ -11,8 +11,8 @@
 
 	LibMaxsi is distributed in the hope that it will be useful, but WITHOUT ANY
 	WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
-	FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for
-	more details.
+	FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
+	details.
 
 	You should have received a copy of the GNU Lesser General Public License
 	along with LibMaxsi. If not, see <http://www.gnu.org/licenses/>.
@@ -20,7 +20,7 @@
 	io.cpp
 	Functions for management of input and output.
 
-******************************************************************************/
+*******************************************************************************/
 
 #include <libmaxsi/platform.h>
 #include <libmaxsi/syscall.h>
@@ -242,6 +242,18 @@ retry:
 		return 0;
 	}
 
+	extern "C" ssize_t pread(int, void*, size_t, off_t)
+	{
+		errno = ENOSYS;
+		return -1;
+	}
+
+	extern "C" ssize_t pwrite(int, const void*, size_t, off_t)
+	{
+		errno = ENOSYS;
+		return -1;
+	}
+
 	extern "C" off_t lseek(int fd, off_t offset, int whence)
 	{
 		SysSeek(fd, &offset, whence);
diff --git a/sortix/include/sortix/syscallnum.h b/sortix/include/sortix/syscallnum.h
index ccd1c4ba..f88e4e1d 100644
--- a/sortix/include/sortix/syscallnum.h
+++ b/sortix/include/sortix/syscallnum.h
@@ -1,6 +1,6 @@
-/******************************************************************************
+/*******************************************************************************
 
-	COPYRIGHT(C) JONAS 'SORTIE' TERMANSEN 2011.
+	COPYRIGHT(C) JONAS 'SORTIE' TERMANSEN 2011, 2012.
 
 	This file is part of Sortix.
 
@@ -14,13 +14,12 @@
 	FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
 	details.
 
-	You should have received a copy of the GNU General Public License along
-	with Sortix. If not, see <http://www.gnu.org/licenses/>.
-
+	You should have received a copy of the GNU General Public License along with
+	Sortix. If not, see <http://www.gnu.org/licenses/>.
 	syscallnum.h
 	Stores numerical constants for each available system call on this kernel.
 
-******************************************************************************/
+*******************************************************************************/
 
 #ifndef SORTIX_SYSCALLNUM_H
 #define SORTIX_SYSCALLNUM_H
@@ -73,7 +72,9 @@
 #define SYSCALL_FCNTL 46
 #define SYSCALL_ACCESS 47
 #define SYSCALL_KERNELINFO 48
-#define SYSCALL_MAX_NUM 49 /* index of highest constant + 1 */
+#define SYSCALL_PREAD 49
+#define SYSCALL_PWRITE 50
+#define SYSCALL_MAX_NUM 51 /* index of highest constant + 1 */
 
 #endif
 
diff --git a/sortix/io.cpp b/sortix/io.cpp
index d9db489b..2864fe8d 100644
--- a/sortix/io.cpp
+++ b/sortix/io.cpp
@@ -1,6 +1,6 @@
-/******************************************************************************
+/*******************************************************************************
 
-	COPYRIGHT(C) JONAS 'SORTIE' TERMANSEN 2011.
+	COPYRIGHT(C) JONAS 'SORTIE' TERMANSEN 2011, 2012.
 
 	This file is part of Sortix.
 
@@ -14,13 +14,13 @@
 	FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
 	details.
 
-	You should have received a copy of the GNU General Public License along
-	with Sortix. If not, see <http://www.gnu.org/licenses/>.
+	You should have received a copy of the GNU General Public License along with
+	Sortix. If not, see <http://www.gnu.org/licenses/>.
 
 	io.cpp
 	Provides system calls for input and output.
 
-******************************************************************************/
+*******************************************************************************/
 
 #include <sortix/kernel/platform.h>
 #include <libmaxsi/error.h>
@@ -78,6 +78,13 @@ namespace Sortix
 			return 0;
 		}
 
+		// TODO: Not implemented yet due to stupid internal kernel design.
+		ssize_t SysPWrite(int fd, const byte* buffer, size_t count, off_t off)
+		{
+			Error::Set(ENOSYS);
+			return -1;
+		}
+
 		struct SysRead_t
 		{
 			union { size_t align1; int fd; };
@@ -118,6 +125,13 @@ namespace Sortix
 			return 0;
 		}
 
+		// TODO: Not implemented yet due to stupid internal kernel design.
+		ssize_t SysPRead(int fd, byte* buffer, size_t count, off_t off)
+		{
+			Error::Set(ENOSYS);
+			return -1;
+		}
+
 		void SysSeek(int fd, off_t* offset, int whence)
 		{
 			// TODO: Validate that offset is a legal user-space off_t!
@@ -160,7 +174,9 @@ namespace Sortix
 		void Init()
 		{
 			Syscall::Register(SYSCALL_WRITE, (void*) SysWrite);
+			Syscall::Register(SYSCALL_PWRITE, (void*) SysPWrite);
 			Syscall::Register(SYSCALL_READ, (void*) SysRead);
+			Syscall::Register(SYSCALL_PREAD, (void*) SysPRead);
 			Syscall::Register(SYSCALL_CLOSE, (void*) SysClose);
 			Syscall::Register(SYSCALL_DUP, (void*) SysDup);
 			Syscall::Register(SYSCALL_SEEK, (void*) SysSeek);