diff --git a/src/unix/notbsd/linux/mod.rs b/src/unix/notbsd/linux/mod.rs
index 33738f4..eedb395 100644
--- a/src/unix/notbsd/linux/mod.rs
+++ b/src/unix/notbsd/linux/mod.rs
@@ -86,10 +86,10 @@
 
     pub struct pthread_mutexattr_t {
         #[cfg(any(target_arch = "x86_64", target_arch = "powerpc64",
-                  target_arch = "mips64"))]
+                  target_arch = "mips64", target_arch = "s390x"))]
         __align: [::c_int; 0],
         #[cfg(not(any(target_arch = "x86_64", target_arch = "powerpc64",
-                      target_arch = "mips64")))]
+                      target_arch = "mips64", target_arch = "s390x")))]
         __align: [::c_long; 0],
         size: [u8; __SIZEOF_PTHREAD_MUTEXATTR_T],
     }
@@ -670,6 +670,9 @@
     } else if #[cfg(any(target_arch = "mips", target_arch = "mipsel"))] {
         mod mips;
         pub use self::mips::*;
+    } else if #[cfg(any(target_arch = "s390x"))] {
+        mod s390x;
+        pub use self::s390x::*;
     } else if #[cfg(any(target_arch = "mips64"))] {
         mod mips64;
         pub use self::mips64::*;
diff --git a/src/unix/notbsd/linux/s390x.rs b/src/unix/notbsd/linux/s390x.rs
new file mode 100644
index 0000000..a14d96d
--- /dev/null
+++ b/src/unix/notbsd/linux/s390x.rs
@@ -0,0 +1,218 @@
+pub type blkcnt_t = i64;
+pub type blksize_t = i64;
+pub type c_char = u8;
+pub type c_long = i64;
+pub type c_ulong = u64;
+pub type fsblkcnt_t = u64;
+pub type fsfilcnt_t = u64;
+pub type ino_t = u64;
+pub type nlink_t = u64;
+pub type off_t = i64;
+pub type rlim_t = u64;
+pub type suseconds_t = i64;
+pub type time_t = i64;
+pub type wchar_t = i32;
+
+s! {
+    pub struct stat {
+        pub st_dev: ::dev_t,
+        pub st_ino: ::ino_t,
+        pub st_nlink: ::nlink_t,
+        pub st_mode: ::mode_t,
+        pub st_uid: ::uid_t,
+        pub st_gid: ::gid_t,
+        st_pad0: ::c_int,
+        pub st_rdev: ::dev_t,
+        pub st_size: ::off_t,
+        pub st_atime: ::time_t,
+        pub st_atime_nsec: ::c_long,
+        pub st_mtime: ::time_t,
+        pub st_mtime_nsec: ::c_long,
+        pub st_ctime: ::time_t,
+        pub st_ctime_nsec: ::c_long,
+        pub st_blksize: ::blksize_t,
+        pub st_blocks: ::blkcnt_t,
+        __glibc_reserved: [::c_int; 5],
+    }
+
+    pub struct stat64 {
+        pub st_dev: ::dev_t,
+        pub st_ino: ::ino_t,
+        pub st_nlink: ::nlink_t,
+        pub st_mode: ::mode_t,
+        pub st_uid: ::uid_t,
+        pub st_gid: ::gid_t,
+        st_pad0: ::c_int,
+        pub st_rdev: ::dev_t,
+        pub st_size: ::off_t,
+        pub st_atime: ::time_t,
+        pub st_atime_nsec: ::c_long,
+        pub st_mtime: ::time_t,
+        pub st_mtime_nsec: ::c_long,
+        pub st_ctime: ::time_t,
+        pub st_ctime_nsec: ::c_long,
+        pub st_blksize: ::blksize_t,
+        pub st_blocks: ::blkcnt_t,
+        __glibc_reserved: [::c_int; 5],
+    }
+
+    pub struct pthread_attr_t {
+        __size: [::c_ulong; 7]
+    }
+
+    pub struct sigaction {
+        pub sa_sigaction: ::sighandler_t,
+        pub sa_flags: ::c_ulong,
+        _restorer: *mut ::c_void,
+        pub sa_mask: sigset_t,
+    }
+
+    pub struct stack_t {
+        pub ss_sp: *mut ::c_void,
+        pub ss_flags: ::c_int,
+        pub ss_size: ::size_t,
+    }
+
+    pub struct sigset_t {
+        __size: [::c_ulong; 16],
+    }
+
+    pub struct siginfo_t {
+        pub si_signo: ::c_int,
+        pub si_errno: ::c_int,
+        pub si_code: ::c_int,
+        _pad: ::c_int,
+        _pad2: [::c_long; 14],
+    }
+
+    pub struct ipc_perm {
+        pub __key: ::key_t,
+        pub uid: ::uid_t,
+        pub gid: ::gid_t,
+        pub cuid: ::uid_t,
+        pub cgid: ::gid_t,
+        pub mode: ::c_uint,
+        pub __seq: ::c_ushort,
+        __pad1: ::c_ushort,
+        __unused1: ::c_ulong,
+        __unused2: ::c_ulong
+    }
+
+    pub struct shmid_ds {
+        pub shm_perm: ::ipc_perm,
+        pub shm_segsz: ::size_t,
+        pub shm_atime: ::time_t,
+        pub shm_dtime: ::time_t,
+        pub shm_ctime: ::time_t,
+        pub shm_cpid: ::pid_t,
+        pub shm_lpid: ::pid_t,
+        pub shm_nattch: ::shmatt_t,
+        __unused4: ::c_ulong,
+        __unused5: ::c_ulong
+    }
+
+    pub struct statfs {
+        pub f_type: ::c_uint,
+        pub f_bsize: ::c_uint,
+        pub f_blocks: ::fsblkcnt_t,
+        pub f_bfree: ::fsblkcnt_t,
+        pub f_bavail: ::fsblkcnt_t,
+        pub f_files: ::fsblkcnt_t,
+        pub f_ffree: ::fsblkcnt_t,
+        pub f_fsid: ::fsid_t,
+        pub f_namelen: ::c_uint,
+        pub f_frsize: ::c_uint,
+        pub f_flags: ::c_uint,
+        f_spare: [::c_uint; 4],
+    }
+
+    pub struct msghdr {
+        pub msg_name: *mut ::c_void,
+        pub msg_namelen: ::socklen_t,
+        pub msg_iov: *mut ::iovec,
+        pub msg_iovlen: ::size_t,
+        pub msg_control: *mut ::c_void,
+        pub msg_controllen: ::size_t,
+        pub msg_flags: ::c_int,
+    }
+
+    pub struct termios {
+        pub c_iflag: ::tcflag_t,
+        pub c_oflag: ::tcflag_t,
+        pub c_cflag: ::tcflag_t,
+        pub c_lflag: ::tcflag_t,
+        pub c_line: ::cc_t,
+        pub c_cc: [::cc_t; ::NCCS],
+        pub c_ispeed: ::speed_t,
+        pub c_ospeed: ::speed_t,
+    }
+
+    pub struct sysinfo {
+        pub uptime: ::c_long,
+        pub loads: [::c_ulong; 3],
+        pub totalram: ::c_ulong,
+        pub freeram: ::c_ulong,
+        pub sharedram: ::c_ulong,
+        pub bufferram: ::c_ulong,
+        pub totalswap: ::c_ulong,
+        pub freeswap: ::c_ulong,
+        pub procs: ::c_ushort,
+        pub pad: ::c_ushort,
+        pub totalhigh: ::c_ulong,
+        pub freehigh: ::c_ulong,
+        pub mem_unit: ::c_uint,
+        pub _f: [::c_char; 0],
+    }
+
+    // FIXME this is actually a union
+    pub struct sem_t {
+        __size: [::c_char; 32],
+        __align: [::c_long; 0],
+    }
+}
+
+// FIXME POSIX_FADV_DONTNEED = 6
+// FIXME POSIX_FADV_NOREUSE = 7
+
+pub const __SIZEOF_PTHREAD_CONDATTR_T: usize = 4;
+pub const __SIZEOF_PTHREAD_MUTEXATTR_T: usize = 4;
+pub const __SIZEOF_PTHREAD_MUTEX_T: usize = 40;
+pub const __SIZEOF_PTHREAD_RWLOCK_T: usize = 56;
+
+pub const EADDRINUSE: ::c_int = 98;
+pub const EADDRNOTAVAIL: ::c_int = 99;
+pub const ECONNABORTED: ::c_int = 103;
+pub const ECONNREFUSED: ::c_int = 111;
+pub const ECONNRESET: ::c_int = 104;
+pub const EDEADLK: ::c_int = 35;
+pub const ENOSYS: ::c_int = 38;
+pub const ENOTCONN: ::c_int = 107;
+pub const ETIMEDOUT: ::c_int = 110;
+pub const FIOCLEX: ::c_ulong = 0x5451;
+pub const FIONBIO: ::c_ulong = 0x5421;
+pub const MAP_ANON: ::c_int = 0x20;
+pub const O_ACCMODE: ::c_int = 3;
+pub const O_APPEND: ::c_int = 1024;
+pub const O_CREAT: ::c_int = 64;
+pub const O_EXCL: ::c_int = 128;
+pub const O_NONBLOCK: ::c_int = 2048;
+pub const PTHREAD_STACK_MIN: ::size_t = 16384;
+pub const RLIM_INFINITY: ::rlim_t = 0xffffffffffffffff;
+pub const SA_ONSTACK: ::c_ulong = 0x08000000;
+pub const SA_SIGINFO: ::c_ulong = 4;
+pub const SIGBUS: ::c_int = 7;
+pub const SIGSTKSZ: ::size_t = 0x2000;
+pub const SIG_SETMASK: ::c_int = 2;
+pub const SOCK_DGRAM: ::c_int = 2;
+pub const SOCK_STREAM: ::c_int = 1;
+pub const SOL_SOCKET: ::c_int = 1;
+pub const SO_BROADCAST: ::c_int = 6;
+pub const SO_ERROR: ::c_int = 4;
+pub const SO_RCVTIMEO: ::c_int = 20;
+pub const SO_REUSEADDR: ::c_int = 2;
+pub const SO_SNDTIMEO: ::c_int = 21;
+
+#[link(name = "util")]
+extern {
+    pub fn ioctl(fd: ::c_int, request: ::c_ulong, ...) -> ::c_int;
+}