separates OS-specific definitions from FFI functions

5 files changed, 391 insertions, 390 deletions

diff --git a/src/ffi.rs b/src/ffi.rs
index 87219e6..a689cd2 100644
--- a/src/ffi.rs
+++ b/src/ffi.rs
@@ -1,391 +1,21 @@
 extern crate libc;
 
-use libc::{c_void,c_int};
+use libc::c_int;
 
-pub use self::os::*;
+use super::os::*;
 
 #[link(name = "c")]
 extern "C" {
-  pub fn tcgetattr(fd: c_int, termios_p: *mut Termios) -> c_int;
-  pub fn tcsetattr(fd: c_int, optional_actions: c_int, termios_p: *const Termios) -> c_int;
+  pub fn tcgetattr(fd: c_int, termios_p: *mut termios) -> c_int;
+  pub fn tcsetattr(fd: c_int, optional_actions: c_int, termios_p: *const termios) -> c_int;
   pub fn tcsendbreak(fd: c_int, duration: c_int) -> c_int;
   pub fn tcdrain(fd: c_int) -> c_int;
   pub fn tcflush(fd: c_int, queue_selector: c_int) -> c_int;
   pub fn tcflow(fd: c_int, action: c_int) -> c_int;
-  pub fn cfmakeraw(termios_p: *mut Termios) -> c_void;
-  pub fn cfgetispeed(termios_p: *const Termios) -> speed_t;
-  pub fn cfgetospeed(termios_p: *const Termios) -> speed_t;
-  pub fn cfsetispeed(termios_p: *mut Termios, speed: speed_t) -> c_int;
-  pub fn cfsetospeed(termios_p: *mut Termios, speed: speed_t) -> c_int;
-  pub fn cfsetspeed(termios_p: *mut Termios, speed: speed_t) -> c_int;
-}
-
-
-#[cfg(target_os = "linux")]
-mod os {
-  use super::libc::{c_int,c_uint,c_uchar};
-
-  #[allow(non_camel_case_types)]
-  pub type cc_t = c_uchar;
-
-  #[allow(non_camel_case_types)]
-  pub type speed_t = c_uint;
-
-  #[allow(non_camel_case_types)]
-  pub type tcflag_t = c_uint;
-
-  #[derive(Debug,Copy,Clone,Eq,PartialEq)]
-  #[repr(C)]
-  pub struct Termios {
-    pub c_iflag: tcflag_t,
-    pub c_oflag: tcflag_t,
-    pub c_cflag: tcflag_t,
-    pub c_lflag: tcflag_t,
-    c_line: cc_t,
-    pub c_cc: [cc_t; NCCS],
-    c_ispeed: speed_t,
-    c_ospeed: speed_t
-  }
-
-  pub const NCCS: usize = 32;
-
-  // c_cc characters
-  pub const VINTR:    usize = 0;
-  pub const VQUIT:    usize = 1;
-  pub const VERASE:   usize = 2;
-  pub const VKILL:    usize = 3;
-  pub const VEOF:     usize = 4;
-  pub const VTIME:    usize = 5;
-  pub const VMIN:     usize = 6;
-  pub const VSWTC:    usize = 7;
-  pub const VSTART:   usize = 8;
-  pub const VSTOP:    usize = 9;
-  pub const VSUSP:    usize = 10;
-  pub const VEOL:     usize = 11;
-  pub const VREPRINT: usize = 12;
-  pub const VDISCARD: usize = 13;
-  pub const VWERASE:  usize = 14;
-  pub const VLNEXT:   usize = 15;
-  pub const VEOL2:    usize = 16;
-
-  // c_iflag bits
-  pub const IGNBRK:  tcflag_t = 0o000001;
-  pub const BRKINT:  tcflag_t = 0o000002;
-  pub const IGNPAR:  tcflag_t = 0o000004;
-  pub const PARMRK:  tcflag_t = 0o000010;
-  pub const INPCK:   tcflag_t = 0o000020;
-  pub const ISTRIP:  tcflag_t = 0o000040;
-  pub const INLCR:   tcflag_t = 0o000100;
-  pub const IGNCR:   tcflag_t = 0o000200;
-  pub const ICRNL:   tcflag_t = 0o000400;
-  pub const IUCLC:   tcflag_t = 0o001000;
-  pub const IXON:    tcflag_t = 0o002000;
-  pub const IXANY:   tcflag_t = 0o004000;
-  pub const IXOFF:   tcflag_t = 0o010000;
-  pub const IMAXBEL: tcflag_t = 0o020000;
-  pub const IUTF8:   tcflag_t = 0o040000;
-
-  // c_oflag bits
-  pub const OPOST:  tcflag_t = 0o000001;
-  pub const OLCUC:  tcflag_t = 0o000002;
-  pub const ONLCR:  tcflag_t = 0o000004;
-  pub const OCRNL:  tcflag_t = 0o000010;
-  pub const ONOCR:  tcflag_t = 0o000020;
-  pub const ONLRET: tcflag_t = 0o000040;
-  pub const OFILL:  tcflag_t = 0o000100;
-  pub const OFDEL:  tcflag_t = 0o000200;
-  pub const NLDLY:  tcflag_t = 0o000400;
-  pub const NL0:    tcflag_t = 0o000000;
-  pub const NL1:    tcflag_t = 0o000400;
-  pub const CRDLY:  tcflag_t = 0o003000;
-  pub const CR0:    tcflag_t = 0o000000;
-  pub const CR1:    tcflag_t = 0o001000;
-  pub const CR2:    tcflag_t = 0o002000;
-  pub const CR3:    tcflag_t = 0o003000;
-  pub const TABDLY: tcflag_t = 0o014000;
-  pub const TAB0:   tcflag_t = 0o000000;
-  pub const TAB1:   tcflag_t = 0o004000;
-  pub const TAB2:   tcflag_t = 0o010000;
-  pub const TAB3:   tcflag_t = 0o014000;
-  pub const BSDLY:  tcflag_t = 0o020000;
-  pub const BS0:    tcflag_t = 0o000000;
-  pub const BS1:    tcflag_t = 0o020000;
-  pub const FFDLY:  tcflag_t = 0o100000;
-  pub const FF0:    tcflag_t = 0o000000;
-  pub const FF1:    tcflag_t = 0o100000;
-  pub const VTDLY:  tcflag_t = 0o040000;
-  pub const VT0:    tcflag_t = 0o000000;
-  pub const VT1:    tcflag_t = 0o040000;
-  pub const XTABS:  tcflag_t = 0o014000;
-
-  // c_cflag bits
-  pub const CBAUD:    tcflag_t = 0o010017;
-  pub const CSIZE:    tcflag_t = 0o000060;
-  pub const CS5:      tcflag_t = 0o000000;
-  pub const CS6:      tcflag_t = 0o000020;
-  pub const CS7:      tcflag_t = 0o000040;
-  pub const CS8:      tcflag_t = 0o000060;
-  pub const CSTOPB:   tcflag_t = 0o000100;
-  pub const CREAD:    tcflag_t = 0o000200;
-  pub const PARENB:   tcflag_t = 0o000400;
-  pub const PARODD:   tcflag_t = 0o001000;
-  pub const HUPCL:    tcflag_t = 0o002000;
-  pub const CLOCAL:   tcflag_t = 0o004000;
-  pub const CBAUDEX:  tcflag_t = 0o010000;
-  pub const CIBAUD:   tcflag_t = 0o02003600000;
-  pub const CMSPAR:   tcflag_t = 0o10000000000;
-  pub const CRTSCTS:  tcflag_t = 0o20000000000;
-
-  // c_lflag bits
-  pub const ISIG:    tcflag_t = 0o000001;
-  pub const ICANON:  tcflag_t = 0o000002;
-  pub const XCASE:   tcflag_t = 0o000004;
-  pub const ECHO:    tcflag_t = 0o000010;
-  pub const ECHOE:   tcflag_t = 0o000020;
-  pub const ECHOK:   tcflag_t = 0o000040;
-  pub const ECHONL:  tcflag_t = 0o000100;
-  pub const NOFLSH:  tcflag_t = 0o000200;
-  pub const TOSTOP:  tcflag_t = 0o000400;
-  pub const ECHOCTL: tcflag_t = 0o001000;
-  pub const ECHOPRT: tcflag_t = 0o002000;
-  pub const ECHOKE:  tcflag_t = 0o004000;
-  pub const FLUSHO:  tcflag_t = 0o010000;
-  pub const PENDIN:  tcflag_t = 0o040000;
-  pub const IEXTEN:  tcflag_t = 0o100000;
-  pub const EXTPROC: tcflag_t = 0o200000;
-
-  // baud rates
-  pub const B0:       speed_t = 0o000000;
-  pub const B50:      speed_t = 0o000001;
-  pub const B75:      speed_t = 0o000002;
-  pub const B110:     speed_t = 0o000003;
-  pub const B134:     speed_t = 0o000004;
-  pub const B150:     speed_t = 0o000005;
-  pub const B200:     speed_t = 0o000006;
-  pub const B300:     speed_t = 0o000007;
-  pub const B600:     speed_t = 0o000010;
-  pub const B1200:    speed_t = 0o000011;
-  pub const B1800:    speed_t = 0o000012;
-  pub const B2400:    speed_t = 0o000013;
-  pub const B4800:    speed_t = 0o000014;
-  pub const B9600:    speed_t = 0o000015;
-  pub const B19200:   speed_t = 0o000016;
-  pub const B38400:   speed_t = 0o000017;
-  pub const EXTA:     speed_t = B19200;
-  pub const EXTB:     speed_t = B38400;
-  pub const B57600:   speed_t = 0o010001;
-  pub const B115200:  speed_t = 0o010002;
-  pub const B230400:  speed_t = 0o010003;
-  pub const B460800:  speed_t = 0o010004;
-  pub const B500000:  speed_t = 0o010005;
-  pub const B576000:  speed_t = 0o010006;
-  pub const B921600:  speed_t = 0o010007;
-  pub const B1000000: speed_t = 0o010010;
-  pub const B1152000: speed_t = 0o010011;
-  pub const B1500000: speed_t = 0o010012;
-  pub const B2000000: speed_t = 0o010013;
-  pub const B2500000: speed_t = 0o010014;
-  pub const B3000000: speed_t = 0o010015;
-  pub const B3500000: speed_t = 0o010016;
-  pub const B4000000: speed_t = 0o010017;
-
-  // tcflow()
-  pub const TCOOFF: c_int = 0;
-  pub const TCOON:  c_int = 1;
-  pub const TCIOFF: c_int = 2;
-  pub const TCION:  c_int = 3;
-
-  // tcflush()
-  pub const TCIFLUSH:  c_int = 0;
-  pub const TCOFLUSH:  c_int = 1;
-  pub const TCIOFLUSH: c_int = 2;
-
-  // tcsetattr()
-  pub const TCSANOW:   c_int = 0;
-  pub const TCSADRAIN: c_int = 1;
-  pub const TCSAFLUSH: c_int = 2;
-}
-
-
-#[cfg(target_os = "macos")]
-mod os {
-  use super::libc::{c_int,c_uchar,c_ulong};
-
-  #[allow(non_camel_case_types)]
-  pub type tcflag_t = c_ulong;
-
-  #[allow(non_camel_case_types)]
-  pub type cc_t = c_uchar;
-
-  #[allow(non_camel_case_types)]
-  pub type speed_t = c_ulong;
-
-  #[derive(Debug,Copy,Clone,Eq,PartialEq)]
-  #[repr(C)]
-  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_cc: [cc_t; NCCS],
-    c_ispeed: speed_t,
-    c_ospeed: speed_t
-  }
-
-  pub const NCCS: usize = 20;
-
-  // c_cc characters
-  pub const VEOF:     usize = 0;
-  pub const VEOL:     usize = 1;
-  pub const VEOL2:    usize = 2;
-  pub const VERASE:   usize = 3;
-  pub const VWERASE:  usize = 4;
-  pub const VKILL:    usize = 5;
-  pub const VREPRINT: usize = 6;
-  pub const VINTR:    usize = 8;
-  pub const VQUIT:    usize = 9;
-  pub const VSUSP:    usize = 10;
-  pub const VDSUSP:   usize = 11;
-  pub const VSTART:   usize = 12;
-  pub const VSTOP:    usize = 13;
-  pub const VLNEXT:   usize = 14;
-  pub const VDISCARD: usize = 15;
-  pub const VMIN:     usize = 16;
-  pub const VTIME:    usize = 17;
-  pub const VSTATUS:  usize = 18;
-
-  // c_iflag bits
-  pub const IGNBRK:  tcflag_t = 0x00000001;
-  pub const BRKINT:  tcflag_t = 0x00000002;
-  pub const IGNPAR:  tcflag_t = 0x00000004;
-  pub const PARMRK:  tcflag_t = 0x00000008;
-  pub const INPCK:   tcflag_t = 0x00000010;
-  pub const ISTRIP:  tcflag_t = 0x00000020;
-  pub const INLCR:   tcflag_t = 0x00000040;
-  pub const IGNCR:   tcflag_t = 0x00000080;
-  pub const ICRNL:   tcflag_t = 0x00000100;
-  pub const IXON:    tcflag_t = 0x00000200;
-  pub const IXOFF:   tcflag_t = 0x00000400;
-  pub const IXANY:   tcflag_t = 0x00000800;
-  pub const IMAXBEL: tcflag_t = 0x00002000;
-  pub const IUTF8:   tcflag_t = 0x00004000;
-
-  // c_oflag bits
-  pub const OPOST:  tcflag_t = 0x00000001;
-  pub const ONLCR:  tcflag_t = 0x00000002;
-  pub const OXTABS: tcflag_t = 0x00000004;
-  pub const ONOEOT: tcflag_t = 0x00000008;
-  pub const OCRNL:  tcflag_t = 0x00000010;
-  pub const ONOCR:  tcflag_t = 0x00000020;
-  pub const ONLRET: tcflag_t = 0x00000040;
-  pub const OFILL:  tcflag_t = 0x00000080;
-  pub const NLDLY:  tcflag_t = 0x00000300;
-  pub const TABDLY: tcflag_t = 0x00000c04;
-  pub const CRDLY:  tcflag_t = 0x00003000;
-  pub const FFDLY:  tcflag_t = 0x00004000;
-  pub const BSDLY:  tcflag_t = 0x00008000;
-  pub const VTDLY:  tcflag_t = 0x00010000;
-  pub const OFDEL:  tcflag_t = 0x00020000;
-  pub const NL0:    tcflag_t = 0x00000000;
-  pub const NL1:    tcflag_t = 0x00000100;
-  pub const NL2:    tcflag_t = 0x00000200;
-  pub const NL3:    tcflag_t = 0x00000300;
-  pub const TAB0:   tcflag_t = 0x00000000;
-  pub const TAB1:   tcflag_t = 0x00000400;
-  pub const TAB2:   tcflag_t = 0x00000800;
-  pub const TAB3:   tcflag_t = 0x00000004;
-  pub const CR0:    tcflag_t = 0x00000000;
-  pub const CR1:    tcflag_t = 0x00001000;
-  pub const CR2:    tcflag_t = 0x00002000;
-  pub const CR3:    tcflag_t = 0x00003000;
-  pub const FF0:    tcflag_t = 0x00000000;
-  pub const FF1:    tcflag_t = 0x00004000;
-  pub const BS0:    tcflag_t = 0x00000000;
-  pub const BS1:    tcflag_t = 0x00008000;
-  pub const VT0:    tcflag_t = 0x00000000;
-  pub const VT1:    tcflag_t = 0x00010000;
-
-  // c_cflag bits
-  pub const CIGNORE:    tcflag_t = 0x00000001;
-  pub const CSIZE:      tcflag_t = 0x00000300;
-  pub const CS5:        tcflag_t = 0x00000000;
-  pub const CS6:        tcflag_t = 0x00000100;
-  pub const CS7:        tcflag_t = 0x00000200;
-  pub const CS8:        tcflag_t = 0x00000300;
-  pub const CSTOPB:     tcflag_t = 0x00000400;
-  pub const CREAD:      tcflag_t = 0x00000800;
-  pub const PARENB:     tcflag_t = 0x00001000;
-  pub const PARODD:     tcflag_t = 0x00002000;
-  pub const HUPCL:      tcflag_t = 0x00004000;
-  pub const CLOCAL:     tcflag_t = 0x00008000;
-  pub const CCTS_OFLOW: tcflag_t = 0x00010000;
-  pub const CRTSCTS:    tcflag_t = CCTS_OFLOW | CRTS_IFLOW;
-  pub const CRTS_IFLOW: tcflag_t = 0x00020000;
-  pub const CDTR_IFLOW: tcflag_t = 0x00040000;
-  pub const CDSR_OFLOW: tcflag_t = 0x00080000;
-  pub const CCAR_OFLOW: tcflag_t = 0x00100000;
-  pub const MDMBUF:     tcflag_t = 0x00100000;
-
-  // c_lflag bits
-  pub const ECHOKE:     tcflag_t = 0x00000001;
-  pub const ECHOE:      tcflag_t = 0x00000002;
-  pub const ECHOK:      tcflag_t = 0x00000004;
-  pub const ECHO:       tcflag_t = 0x00000008;
-  pub const ECHONL:     tcflag_t = 0x00000010;
-  pub const ECHOPRT:    tcflag_t = 0x00000020;
-  pub const ECHOCTL:    tcflag_t = 0x00000040;
-  pub const ISIG:       tcflag_t = 0x00000080;
-  pub const ICANON:     tcflag_t = 0x00000100;
-  pub const ALTWERASE:  tcflag_t = 0x00000200;
-  pub const IEXTEN:     tcflag_t = 0x00000400;
-  pub const EXTPROC:    tcflag_t = 0x00000800;
-  pub const TOSTOP:     tcflag_t = 0x00400000;
-  pub const FLUSHO:     tcflag_t = 0x00800000;
-  pub const NOKERNINFO: tcflag_t = 0x02000000;
-  pub const PENDIN:     tcflag_t = 0x20000000;
-  pub const NOFLSH:     tcflag_t = 0x80000000;
-
-  // baud speeds
-  pub const B0:      speed_t = 0;
-  pub const B50:     speed_t = 50;
-  pub const B75:     speed_t = 75;
-  pub const B110:    speed_t = 110;
-  pub const B134:    speed_t = 134;
-  pub const B150:    speed_t = 150;
-  pub const B200:    speed_t = 200;
-  pub const B300:    speed_t = 300;
-  pub const B600:    speed_t = 600;
-  pub const B1200:   speed_t = 1200;
-  pub const B1800:   speed_t = 1800;
-  pub const B2400:   speed_t = 2400;
-  pub const B4800:   speed_t = 4800;
-  pub const B9600:   speed_t = 9600;
-  pub const B19200:  speed_t = 19200;
-  pub const B38400:  speed_t = 38400;
-  pub const B7200:   speed_t = 7200;
-  pub const B14400:  speed_t = 14400;
-  pub const B28800:  speed_t = 28800;
-  pub const B57600:  speed_t = 57600;
-  pub const B76800:  speed_t = 76800;
-  pub const B115200: speed_t = 115200;
-  pub const B230400: speed_t = 230400;
-  pub const EXTA:    speed_t = 19200;
-  pub const EXTB:    speed_t = 38400;
-
-  // tcflow()
-  pub const TCOOFF:    c_int = 1;
-  pub const TCOON:     c_int = 2;
-  pub const TCIOFF:    c_int = 3;
-  pub const TCION:     c_int = 4;
-
-  // tcflush()
-  pub const TCIFLUSH:  c_int = 1;
-  pub const TCOFLUSH:  c_int = 2;
-  pub const TCIOFLUSH: c_int = 3;
-
-  // tcsetattr()
-  pub const TCSANOW:   c_int = 0;
-  pub const TCSADRAIN: c_int = 1;
-  pub const TCSAFLUSH: c_int = 2;
-  pub const TCSASOFT:  c_int = 0x10;
+  pub fn cfmakeraw(termios_p: *mut termios);
+  pub fn cfgetispeed(termios_p: *const termios) -> speed_t;
+  pub fn cfgetospeed(termios_p: *const termios) -> speed_t;
+  pub fn cfsetispeed(termios_p: *mut termios, speed: speed_t) -> c_int;
+  pub fn cfsetospeed(termios_p: *mut termios, speed: speed_t) -> c_int;
+  pub fn cfsetspeed(termios_p: *mut termios, speed: speed_t) -> c_int;
 }
diff --git a/src/lib.rs b/src/lib.rs
index 0cc5636..c482560 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -6,20 +6,21 @@ use std::default::Default;
 
 use libc::{c_int};
 
-pub use ffi::{cc_t,speed_t,tcflag_t}; // types
-pub use ffi::{VEOF,VEOL,VERASE,VINTR,VKILL,VMIN,VQUIT,VSTART,VSTOP,VSUSP,VTIME}; // c_cc subscripts
-pub use ffi::{BRKINT,ICRNL,IGNBRK,IGNCR,IGNPAR,INLCR,INPCK,ISTRIP,IXANY,IXOFF,IXON,PARMRK}; // input modes
-pub use ffi::{OPOST,ONLCR,OCRNL,ONOCR,ONLRET,OFILL,NLDLY,NL0,NL1,CRDLY,CR0,CR1,CR2,CR3,TABDLY,TAB0,TAB1,TAB2,TAB3,BSDLY,BS0,BS1,VTDLY,VT0,VT1,FFDLY,FF0,FF1}; // output modes
-pub use ffi::{B0,B50,B75,B110,B134,B150,B200,B300,B600,B1200,B1800,B2400,B4800,B9600,B19200,B38400}; // baud rate selection
-pub use ffi::{CSIZE,CS5,CS6,CS7,CS8,CSTOPB,CREAD,PARENB,PARODD,HUPCL,CLOCAL}; // control modes
-pub use ffi::{ECHO,ECHOE,ECHOK,ECHONL,ICANON,IEXTEN,ISIG,NOFLSH,TOSTOP}; // local modes
-pub use ffi::{TCSANOW,TCSADRAIN,TCSAFLUSH}; // attribute selection
-pub use ffi::{TCIFLUSH,TCIOFLUSH,TCOFLUSH,TCIOFF,TCION,TCOOFF,TCOON}; // line control
+pub use os::{cc_t,speed_t,tcflag_t}; // types
+pub use os::{VEOF,VEOL,VERASE,VINTR,VKILL,VMIN,VQUIT,VSTART,VSTOP,VSUSP,VTIME}; // c_cc subscripts
+pub use os::{BRKINT,ICRNL,IGNBRK,IGNCR,IGNPAR,INLCR,INPCK,ISTRIP,IXANY,IXOFF,IXON,PARMRK}; // input modes
+pub use os::{OPOST,ONLCR,OCRNL,ONOCR,ONLRET,OFILL,NLDLY,NL0,NL1,CRDLY,CR0,CR1,CR2,CR3,TABDLY,TAB0,TAB1,TAB2,TAB3,BSDLY,BS0,BS1,VTDLY,VT0,VT1,FFDLY,FF0,FF1}; // output modes
+pub use os::{B0,B50,B75,B110,B134,B150,B200,B300,B600,B1200,B1800,B2400,B4800,B9600,B19200,B38400}; // baud rate selection
+pub use os::{CSIZE,CS5,CS6,CS7,CS8,CSTOPB,CREAD,PARENB,PARODD,HUPCL,CLOCAL}; // control modes
+pub use os::{ECHO,ECHOE,ECHOK,ECHONL,ICANON,IEXTEN,ISIG,NOFLSH,TOSTOP}; // local modes
+pub use os::{TCSANOW,TCSADRAIN,TCSAFLUSH}; // attribute selection
+pub use os::{TCIFLUSH,TCIOFLUSH,TCOFLUSH,TCIOFF,TCION,TCOOFF,TCOON}; // line control
 
 pub mod ffi;
+pub mod os;
 
 
-pub type Termios = ffi::Termios;
+pub type Termios = os::termios;
 
 impl Termios {
   pub fn zeroed() -> Self {
diff --git a/src/os/linux.rs b/src/os/linux.rs
new file mode 100644
index 0000000..5e535b2
--- /dev/null
+++ b/src/os/linux.rs
@@ -0,0 +1,180 @@
+#![allow(non_camel_case_types)]
+
+extern crate libc;
+
+use libc::{c_int,c_uint,c_uchar};
+
+pub type cc_t = c_uchar;
+pub type speed_t = c_uint;
+pub type tcflag_t = c_uint;
+
+#[derive(Debug,Copy,Clone,Eq,PartialEq)]
+#[repr(C)]
+pub struct termios {
+    pub c_iflag: tcflag_t,
+    pub c_oflag: tcflag_t,
+    pub c_cflag: tcflag_t,
+    pub c_lflag: tcflag_t,
+    c_line: cc_t,
+    pub c_cc: [cc_t; NCCS],
+    c_ispeed: speed_t,
+    c_ospeed: speed_t
+}
+
+pub const NCCS: usize = 32;
+
+// c_cc characters
+pub const VINTR:    usize = 0;
+pub const VQUIT:    usize = 1;
+pub const VERASE:   usize = 2;
+pub const VKILL:    usize = 3;
+pub const VEOF:     usize = 4;
+pub const VTIME:    usize = 5;
+pub const VMIN:     usize = 6;
+pub const VSWTC:    usize = 7;
+pub const VSTART:   usize = 8;
+pub const VSTOP:    usize = 9;
+pub const VSUSP:    usize = 10;
+pub const VEOL:     usize = 11;
+pub const VREPRINT: usize = 12;
+pub const VDISCARD: usize = 13;
+pub const VWERASE:  usize = 14;
+pub const VLNEXT:   usize = 15;
+pub const VEOL2:    usize = 16;
+
+// c_iflag bits
+pub const IGNBRK:  tcflag_t = 0o000001;
+pub const BRKINT:  tcflag_t = 0o000002;
+pub const IGNPAR:  tcflag_t = 0o000004;
+pub const PARMRK:  tcflag_t = 0o000010;
+pub const INPCK:   tcflag_t = 0o000020;
+pub const ISTRIP:  tcflag_t = 0o000040;
+pub const INLCR:   tcflag_t = 0o000100;
+pub const IGNCR:   tcflag_t = 0o000200;
+pub const ICRNL:   tcflag_t = 0o000400;
+pub const IUCLC:   tcflag_t = 0o001000;
+pub const IXON:    tcflag_t = 0o002000;
+pub const IXANY:   tcflag_t = 0o004000;
+pub const IXOFF:   tcflag_t = 0o010000;
+pub const IMAXBEL: tcflag_t = 0o020000;
+pub const IUTF8:   tcflag_t = 0o040000;
+
+// c_oflag bits
+pub const OPOST:  tcflag_t = 0o000001;
+pub const OLCUC:  tcflag_t = 0o000002;
+pub const ONLCR:  tcflag_t = 0o000004;
+pub const OCRNL:  tcflag_t = 0o000010;
+pub const ONOCR:  tcflag_t = 0o000020;
+pub const ONLRET: tcflag_t = 0o000040;
+pub const OFILL:  tcflag_t = 0o000100;
+pub const OFDEL:  tcflag_t = 0o000200;
+pub const NLDLY:  tcflag_t = 0o000400;
+pub const NL0:    tcflag_t = 0o000000;
+pub const NL1:    tcflag_t = 0o000400;
+pub const CRDLY:  tcflag_t = 0o003000;
+pub const CR0:    tcflag_t = 0o000000;
+pub const CR1:    tcflag_t = 0o001000;
+pub const CR2:    tcflag_t = 0o002000;
+pub const CR3:    tcflag_t = 0o003000;
+pub const TABDLY: tcflag_t = 0o014000;
+pub const TAB0:   tcflag_t = 0o000000;
+pub const TAB1:   tcflag_t = 0o004000;
+pub const TAB2:   tcflag_t = 0o010000;
+pub const TAB3:   tcflag_t = 0o014000;
+pub const BSDLY:  tcflag_t = 0o020000;
+pub const BS0:    tcflag_t = 0o000000;
+pub const BS1:    tcflag_t = 0o020000;
+pub const FFDLY:  tcflag_t = 0o100000;
+pub const FF0:    tcflag_t = 0o000000;
+pub const FF1:    tcflag_t = 0o100000;
+pub const VTDLY:  tcflag_t = 0o040000;
+pub const VT0:    tcflag_t = 0o000000;
+pub const VT1:    tcflag_t = 0o040000;
+pub const XTABS:  tcflag_t = 0o014000;
+
+// c_cflag bits
+pub const CBAUD:    tcflag_t = 0o010017;
+pub const CSIZE:    tcflag_t = 0o000060;
+pub const CS5:      tcflag_t = 0o000000;
+pub const CS6:      tcflag_t = 0o000020;
+pub const CS7:      tcflag_t = 0o000040;
+pub const CS8:      tcflag_t = 0o000060;
+pub const CSTOPB:   tcflag_t = 0o000100;
+pub const CREAD:    tcflag_t = 0o000200;
+pub const PARENB:   tcflag_t = 0o000400;
+pub const PARODD:   tcflag_t = 0o001000;
+pub const HUPCL:    tcflag_t = 0o002000;
+pub const CLOCAL:   tcflag_t = 0o004000;
+pub const CBAUDEX:  tcflag_t = 0o010000;
+pub const CIBAUD:   tcflag_t = 0o02003600000;
+pub const CMSPAR:   tcflag_t = 0o10000000000;
+pub const CRTSCTS:  tcflag_t = 0o20000000000;
+
+// c_lflag bits
+pub const ISIG:    tcflag_t = 0o000001;
+pub const ICANON:  tcflag_t = 0o000002;
+pub const XCASE:   tcflag_t = 0o000004;
+pub const ECHO:    tcflag_t = 0o000010;
+pub const ECHOE:   tcflag_t = 0o000020;
+pub const ECHOK:   tcflag_t = 0o000040;
+pub const ECHONL:  tcflag_t = 0o000100;
+pub const NOFLSH:  tcflag_t = 0o000200;
+pub const TOSTOP:  tcflag_t = 0o000400;
+pub const ECHOCTL: tcflag_t = 0o001000;
+pub const ECHOPRT: tcflag_t = 0o002000;
+pub const ECHOKE:  tcflag_t = 0o004000;
+pub const FLUSHO:  tcflag_t = 0o010000;
+pub const PENDIN:  tcflag_t = 0o040000;
+pub const IEXTEN:  tcflag_t = 0o100000;
+pub const EXTPROC: tcflag_t = 0o200000;
+
+// baud rates
+pub const B0:       speed_t = 0o000000;
+pub const B50:      speed_t = 0o000001;
+pub const B75:      speed_t = 0o000002;
+pub const B110:     speed_t = 0o000003;
+pub const B134:     speed_t = 0o000004;
+pub const B150:     speed_t = 0o000005;
+pub const B200:     speed_t = 0o000006;
+pub const B300:     speed_t = 0o000007;
+pub const B600:     speed_t = 0o000010;
+pub const B1200:    speed_t = 0o000011;
+pub const B1800:    speed_t = 0o000012;
+pub const B2400:    speed_t = 0o000013;
+pub const B4800:    speed_t = 0o000014;
+pub const B9600:    speed_t = 0o000015;
+pub const B19200:   speed_t = 0o000016;
+pub const B38400:   speed_t = 0o000017;
+pub const EXTA:     speed_t = B19200;
+pub const EXTB:     speed_t = B38400;
+pub const B57600:   speed_t = 0o010001;
+pub const B115200:  speed_t = 0o010002;
+pub const B230400:  speed_t = 0o010003;
+pub const B460800:  speed_t = 0o010004;
+pub const B500000:  speed_t = 0o010005;
+pub const B576000:  speed_t = 0o010006;
+pub const B921600:  speed_t = 0o010007;
+pub const B1000000: speed_t = 0o010010;
+pub const B1152000: speed_t = 0o010011;
+pub const B1500000: speed_t = 0o010012;
+pub const B2000000: speed_t = 0o010013;
+pub const B2500000: speed_t = 0o010014;
+pub const B3000000: speed_t = 0o010015;
+pub const B3500000: speed_t = 0o010016;
+pub const B4000000: speed_t = 0o010017;
+
+// tcflow()
+pub const TCOOFF: c_int = 0;
+pub const TCOON:  c_int = 1;
+pub const TCIOFF: c_int = 2;
+pub const TCION:  c_int = 3;
+
+// tcflush()
+pub const TCIFLUSH:  c_int = 0;
+pub const TCOFLUSH:  c_int = 1;
+pub const TCIOFLUSH: c_int = 2;
+
+// tcsetattr()
+pub const TCSANOW:   c_int = 0;
+pub const TCSADRAIN: c_int = 1;
+pub const TCSAFLUSH: c_int = 2;
diff --git a/src/os/macos.rs b/src/os/macos.rs
new file mode 100644
index 0000000..c4de577
--- /dev/null
+++ b/src/os/macos.rs
@@ -0,0 +1,178 @@
+#![allow(non_camel_case_types)]
+
+extern crate libc;
+
+use libc::{c_int,c_uchar,c_ulong};
+
+pub type tcflag_t = c_ulong;
+pub type cc_t = c_uchar;
+pub type speed_t = c_ulong;
+
+#[derive(Debug,Copy,Clone,Eq,PartialEq)]
+#[repr(C)]
+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_cc: [cc_t; NCCS],
+    c_ispeed: speed_t,
+    c_ospeed: speed_t
+}
+
+pub const NCCS: usize = 20;
+
+// c_cc characters
+pub const VEOF:     usize = 0;
+pub const VEOL:     usize = 1;
+pub const VEOL2:    usize = 2;
+pub const VERASE:   usize = 3;
+pub const VWERASE:  usize = 4;
+pub const VKILL:    usize = 5;
+pub const VREPRINT: usize = 6;
+pub const VINTR:    usize = 8;
+pub const VQUIT:    usize = 9;
+pub const VSUSP:    usize = 10;
+pub const VDSUSP:   usize = 11;
+pub const VSTART:   usize = 12;
+pub const VSTOP:    usize = 13;
+pub const VLNEXT:   usize = 14;
+pub const VDISCARD: usize = 15;
+pub const VMIN:     usize = 16;
+pub const VTIME:    usize = 17;
+pub const VSTATUS:  usize = 18;
+
+// c_iflag bits
+pub const IGNBRK:  tcflag_t = 0x00000001;
+pub const BRKINT:  tcflag_t = 0x00000002;
+pub const IGNPAR:  tcflag_t = 0x00000004;
+pub const PARMRK:  tcflag_t = 0x00000008;
+pub const INPCK:   tcflag_t = 0x00000010;
+pub const ISTRIP:  tcflag_t = 0x00000020;
+pub const INLCR:   tcflag_t = 0x00000040;
+pub const IGNCR:   tcflag_t = 0x00000080;
+pub const ICRNL:   tcflag_t = 0x00000100;
+pub const IXON:    tcflag_t = 0x00000200;
+pub const IXOFF:   tcflag_t = 0x00000400;
+pub const IXANY:   tcflag_t = 0x00000800;
+pub const IMAXBEL: tcflag_t = 0x00002000;
+pub const IUTF8:   tcflag_t = 0x00004000;
+
+// c_oflag bits
+pub const OPOST:  tcflag_t = 0x00000001;
+pub const ONLCR:  tcflag_t = 0x00000002;
+pub const OXTABS: tcflag_t = 0x00000004;
+pub const ONOEOT: tcflag_t = 0x00000008;
+pub const OCRNL:  tcflag_t = 0x00000010;
+pub const ONOCR:  tcflag_t = 0x00000020;
+pub const ONLRET: tcflag_t = 0x00000040;
+pub const OFILL:  tcflag_t = 0x00000080;
+pub const NLDLY:  tcflag_t = 0x00000300;
+pub const TABDLY: tcflag_t = 0x00000c04;
+pub const CRDLY:  tcflag_t = 0x00003000;
+pub const FFDLY:  tcflag_t = 0x00004000;
+pub const BSDLY:  tcflag_t = 0x00008000;
+pub const VTDLY:  tcflag_t = 0x00010000;
+pub const OFDEL:  tcflag_t = 0x00020000;
+pub const NL0:    tcflag_t = 0x00000000;
+pub const NL1:    tcflag_t = 0x00000100;
+pub const NL2:    tcflag_t = 0x00000200;
+pub const NL3:    tcflag_t = 0x00000300;
+pub const TAB0:   tcflag_t = 0x00000000;
+pub const TAB1:   tcflag_t = 0x00000400;
+pub const TAB2:   tcflag_t = 0x00000800;
+pub const TAB3:   tcflag_t = 0x00000004;
+pub const CR0:    tcflag_t = 0x00000000;
+pub const CR1:    tcflag_t = 0x00001000;
+pub const CR2:    tcflag_t = 0x00002000;
+pub const CR3:    tcflag_t = 0x00003000;
+pub const FF0:    tcflag_t = 0x00000000;
+pub const FF1:    tcflag_t = 0x00004000;
+pub const BS0:    tcflag_t = 0x00000000;
+pub const BS1:    tcflag_t = 0x00008000;
+pub const VT0:    tcflag_t = 0x00000000;
+pub const VT1:    tcflag_t = 0x00010000;
+
+// c_cflag bits
+pub const CIGNORE:    tcflag_t = 0x00000001;
+pub const CSIZE:      tcflag_t = 0x00000300;
+pub const CS5:        tcflag_t = 0x00000000;
+pub const CS6:        tcflag_t = 0x00000100;
+pub const CS7:        tcflag_t = 0x00000200;
+pub const CS8:        tcflag_t = 0x00000300;
+pub const CSTOPB:     tcflag_t = 0x00000400;
+pub const CREAD:      tcflag_t = 0x00000800;
+pub const PARENB:     tcflag_t = 0x00001000;
+pub const PARODD:     tcflag_t = 0x00002000;
+pub const HUPCL:      tcflag_t = 0x00004000;
+pub const CLOCAL:     tcflag_t = 0x00008000;
+pub const CCTS_OFLOW: tcflag_t = 0x00010000;
+pub const CRTSCTS:    tcflag_t = CCTS_OFLOW | CRTS_IFLOW;
+pub const CRTS_IFLOW: tcflag_t = 0x00020000;
+pub const CDTR_IFLOW: tcflag_t = 0x00040000;
+pub const CDSR_OFLOW: tcflag_t = 0x00080000;
+pub const CCAR_OFLOW: tcflag_t = 0x00100000;
+pub const MDMBUF:     tcflag_t = 0x00100000;
+
+// c_lflag bits
+pub const ECHOKE:     tcflag_t = 0x00000001;
+pub const ECHOE:      tcflag_t = 0x00000002;
+pub const ECHOK:      tcflag_t = 0x00000004;
+pub const ECHO:       tcflag_t = 0x00000008;
+pub const ECHONL:     tcflag_t = 0x00000010;
+pub const ECHOPRT:    tcflag_t = 0x00000020;
+pub const ECHOCTL:    tcflag_t = 0x00000040;
+pub const ISIG:       tcflag_t = 0x00000080;
+pub const ICANON:     tcflag_t = 0x00000100;
+pub const ALTWERASE:  tcflag_t = 0x00000200;
+pub const IEXTEN:     tcflag_t = 0x00000400;
+pub const EXTPROC:    tcflag_t = 0x00000800;
+pub const TOSTOP:     tcflag_t = 0x00400000;
+pub const FLUSHO:     tcflag_t = 0x00800000;
+pub const NOKERNINFO: tcflag_t = 0x02000000;
+pub const PENDIN:     tcflag_t = 0x20000000;
+pub const NOFLSH:     tcflag_t = 0x80000000;
+
+// baud speeds
+pub const B0:      speed_t = 0;
+pub const B50:     speed_t = 50;
+pub const B75:     speed_t = 75;
+pub const B110:    speed_t = 110;
+pub const B134:    speed_t = 134;
+pub const B150:    speed_t = 150;
+pub const B200:    speed_t = 200;
+pub const B300:    speed_t = 300;
+pub const B600:    speed_t = 600;
+pub const B1200:   speed_t = 1200;
+pub const B1800:   speed_t = 1800;
+pub const B2400:   speed_t = 2400;
+pub const B4800:   speed_t = 4800;
+pub const B9600:   speed_t = 9600;
+pub const B19200:  speed_t = 19200;
+pub const B38400:  speed_t = 38400;
+pub const B7200:   speed_t = 7200;
+pub const B14400:  speed_t = 14400;
+pub const B28800:  speed_t = 28800;
+pub const B57600:  speed_t = 57600;
+pub const B76800:  speed_t = 76800;
+pub const B115200: speed_t = 115200;
+pub const B230400: speed_t = 230400;
+pub const EXTA:    speed_t = 19200;
+pub const EXTB:    speed_t = 38400;
+
+// tcflow()
+pub const TCOOFF:    c_int = 1;
+pub const TCOON:     c_int = 2;
+pub const TCIOFF:    c_int = 3;
+pub const TCION:     c_int = 4;
+
+// tcflush()
+pub const TCIFLUSH:  c_int = 1;
+pub const TCOFLUSH:  c_int = 2;
+pub const TCIOFLUSH: c_int = 3;
+
+// tcsetattr()
+pub const TCSANOW:   c_int = 0;
+pub const TCSADRAIN: c_int = 1;
+pub const TCSAFLUSH: c_int = 2;
+pub const TCSASOFT:  c_int = 0x10;
diff --git a/src/os/mod.rs b/src/os/mod.rs
new file mode 100644
index 0000000..a22d356
--- /dev/null
+++ b/src/os/mod.rs
@@ -0,0 +1,12 @@
+#[cfg(target_os = "linux")]
+pub use self::linux::*;
+
+#[cfg(target_os = "macos")]
+pub use self::macos::*;
+
+
+#[cfg(target_os = "linux")]
+mod linux;
+
+#[cfg(target_os = "macos")]
+mod macos;