diff --git a/extra/unix/stat/macosx/macosx.factor b/extra/unix/stat/macosx/macosx.factor
new file mode 100644
index 0000000000..170d70403c
--- /dev/null
+++ b/extra/unix/stat/macosx/macosx.factor
@@ -0,0 +1,52 @@
+
+USING: kernel alien.syntax math ;
+
+IN: unix.stat
+
+! Mac OS X ppc
+
+C-STRUCT: stat
+    { "dev_t"      "st_dev" }
+    { "ino_t"      "st_ino" }
+    { "mode_t"     "st_mode" }
+    { "nlink_t"    "st_nlink" }
+    { "uid_t"      "st_uid" }
+    { "gid_t"      "st_gid" }
+    { "dev_t"      "st_rdev" }
+    { "timespec"   "st_atimespec" }
+    { "timespec"   "st_mtimespec" }
+    { "timespec"   "st_ctimespec" }
+    { "off_t"      "st_size" }
+    { "blkcnt_t"   "st_blocks" }
+    { "blksize_t"  "st_blksize" }
+    { "__uint32_t" "st_flags" }
+    { "__uint32_t" "st_gen" }
+    { "__int32_t"  "st_lspare" }
+    { "__int64_t"  "st_qspare0" }
+    { "__int64_t"  "st_qspare1" } ;
+
+FUNCTION: int stat  ( char* pathname, stat* buf ) ;
+FUNCTION: int lstat ( char* pathname, stat* buf ) ;
+
+! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+
+: S_IFMT   OCT: 170000 ; ! These bits determine file type.
+
+: S_IFDIR  OCT:  40000 ;    ! Directory.
+: S_IFCHR  OCT:  20000 ;    ! Character device.
+: S_IFBLK  OCT:  60000 ;    ! Block device.
+: S_IFREG  OCT: 100000 ;    ! Regular file.
+: S_IFIFO  OCT: 010000 ;    ! FIFO.
+: S_IFLNK  OCT: 120000 ;    ! Symbolic link.
+: S_IFSOCK OCT: 140000 ;    ! Socket.
+
+: S_ISTYPE ( mode mask -- val ) >r S_IFMT bitand r> = ;
+
+: S_ISREG  ( mode -- value ) S_IFREG S_ISTYPE ;
+: S_ISDIR  ( mode -- value ) S_IFDIR S_ISTYPE ;
+: S_ISCHR  ( mode -- value ) S_IFCHR S_ISTYPE ;
+: S_ISBLK  ( mode -- value ) S_IFBLK S_ISTYPE ;
+: S_ISFIFO ( mode -- value ) S_IFIFO S_ISTYPE ;
+: S_ISLNK  ( mode -- value ) S_IFLNK S_ISTYPE ;
+: S_ISSOCK ( mode -- value ) S_IFSOCK S_ISTYPE ;
+
diff --git a/extra/unix/types/linux/linux.factor b/extra/unix/types/linux/linux.factor
new file mode 100644
index 0000000000..9be9756edd
--- /dev/null
+++ b/extra/unix/types/linux/linux.factor
@@ -0,0 +1,29 @@
+
+USING: alien.syntax ;
+
+IN: unix.types
+
+! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+
+TYPEDEF: ulonglong __uquad_type
+TYPEDEF: ulong     __ulongword_type
+TYPEDEF: uint      __uword_type
+TYPEDEF: long      __slongword_type
+TYPEDEF: int       __sword_type
+TYPEDEF: uint      __u32_type
+TYPEDEF: int       __s32_type 
+
+! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+
+TYPEDEF: __uquad_type     dev_t
+TYPEDEF: __ulongword_type ino_t
+TYPEDEF: __u32_type       mode_t
+TYPEDEF: __uword_type     nlink_t
+TYPEDEF: __u32_type       uid_t
+TYPEDEF: __u32_type       gid_t
+TYPEDEF: __slongword_type off_t
+TYPEDEF: __slongword_type blksize_t
+TYPEDEF: __slongword_type blkcnt_t
+TYPEDEF: __sword_type     ssize_t
+TYPEDEF: __s32_type       pid_t
+TYPEDEF: __slongword_type time_t
\ No newline at end of file
diff --git a/extra/unix/types/macosx/macosx.factor b/extra/unix/types/macosx/macosx.factor
new file mode 100644
index 0000000000..822e32251a
--- /dev/null
+++ b/extra/unix/types/macosx/macosx.factor
@@ -0,0 +1,26 @@
+
+IN: unix.types
+
+! Darwin 9.1.0 ppc
+
+! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+
+TYPEDEF: ushort   __uint16_t
+TYPEDEF: uint     __uint32_t
+TYPEDEF: int      __int32_t
+TYPEDEF: longlong __int64_t
+
+! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+
+TYPEDEF: __int32_t  dev_t
+TYPEDEF: __uint32_t ino_t
+TYPEDEF: __uint16_t mode_t
+TYPEDEF: __uint16_t nlink_t
+TYPEDEF: __uint32_t uid_t
+TYPEDEF: __uint32_t gid_t
+TYPEDEF: __int64_t  off_t
+TYPEDEF: __int64_t  blkcnt_t
+TYPEDEF: __int32_t  blksize_t
+TYPEDEF: long       ssize_t
+TYPEDEF: __int32_t  pid_t
+TYPEDEF: long       time_t
diff --git a/extra/unix/types/types.factor b/extra/unix/types/types.factor
new file mode 100644
index 0000000000..23698d2c9b
--- /dev/null
+++ b/extra/unix/types/types.factor
@@ -0,0 +1,14 @@
+
+USING: kernel system alien.syntax combinators vocabs.loader ;
+
+IN: unix.types
+
+TYPEDEF: void* caddr_t
+
+os
+  {
+    { "linux"  [ "unix.types.linux"  require ] }
+    { "macosx" [ "unix.types.macosx" require ] }
+    [ drop ]
+  }
+case
\ No newline at end of file