Amend some files to make it compile on arm-linux-androideabi.

14 files changed, 203 insertions, 95 deletions

diff --git a/src/errno.rs b/src/errno.rs
index cc6d750e..cb62f442 100644
--- a/src/errno.rs
+++ b/src/errno.rs
@@ -95,184 +95,184 @@ fn desc(errno: Errno) -> &'static str {
         EHOSTDOWN       => "Host is down",
         EHOSTUNREACH    => "No route to host",
 
-        #[cfg(target_os = "linux")]
+        #[cfg(any(target_os = "linux", target_os = "android"))]
         ECHRNG          => "Channel number out of range",
 
-        #[cfg(target_os = "linux")]
+        #[cfg(any(target_os = "linux", target_os = "android"))]
         EL2NSYNC        => "Level 2 not synchronized",
 
-        #[cfg(target_os = "linux")]
+        #[cfg(any(target_os = "linux", target_os = "android"))]
         EL3HLT          => "Level 3 halted",
 
-        #[cfg(target_os = "linux")]
+        #[cfg(any(target_os = "linux", target_os = "android"))]
         EL3RST          => "Level 3 reset",
 
-        #[cfg(target_os = "linux")]
+        #[cfg(any(target_os = "linux", target_os = "android"))]
         ELNRNG          => "Link number out of range",
 
-        #[cfg(target_os = "linux")]
+        #[cfg(any(target_os = "linux", target_os = "android"))]
         EUNATCH         => "Protocol driver not attached",
 
-        #[cfg(target_os = "linux")]
+        #[cfg(any(target_os = "linux", target_os = "android"))]
         ENOCSI          => "No CSI structure available",
 
-        #[cfg(target_os = "linux")]
+        #[cfg(any(target_os = "linux", target_os = "android"))]
         EL2HLT          => "Level 2 halted",
 
-        #[cfg(target_os = "linux")]
+        #[cfg(any(target_os = "linux", target_os = "android"))]
         EBADE           => "Invalid exchange",
 
-        #[cfg(target_os = "linux")]
+        #[cfg(any(target_os = "linux", target_os = "android"))]
         EBADR           => "Invalid request descriptor",
 
-        #[cfg(target_os = "linux")]
+        #[cfg(any(target_os = "linux", target_os = "android"))]
         EXFULL          => "Exchange full",
 
-        #[cfg(target_os = "linux")]
+        #[cfg(any(target_os = "linux", target_os = "android"))]
         ENOANO          => "No anode",
 
-        #[cfg(target_os = "linux")]
+        #[cfg(any(target_os = "linux", target_os = "android"))]
         EBADRQC         => "Invalid request code",
 
-        #[cfg(target_os = "linux")]
+        #[cfg(any(target_os = "linux", target_os = "android"))]
         EBADSLT         => "Invalid slot",
 
-        #[cfg(target_os = "linux")]
+        #[cfg(any(target_os = "linux", target_os = "android"))]
         EBFONT          => "Bad font file format",
 
-        #[cfg(target_os = "linux")]
+        #[cfg(any(target_os = "linux", target_os = "android"))]
         ENOSTR          => "Device not a stream",
 
-        #[cfg(target_os = "linux")]
+        #[cfg(any(target_os = "linux", target_os = "android"))]
         ENODATA         => "No data available",
 
-        #[cfg(target_os = "linux")]
+        #[cfg(any(target_os = "linux", target_os = "android"))]
         ETIME           => "Timer expired",
 
-        #[cfg(target_os = "linux")]
+        #[cfg(any(target_os = "linux", target_os = "android"))]
         ENOSR           => "Out of streams resources",
 
-        #[cfg(target_os = "linux")]
+        #[cfg(any(target_os = "linux", target_os = "android"))]
         ENONET          => "Machine is not on the network",
 
-        #[cfg(target_os = "linux")]
+        #[cfg(any(target_os = "linux", target_os = "android"))]
         ENOPKG          => "Package not installed",
 
-        #[cfg(target_os = "linux")]
+        #[cfg(any(target_os = "linux", target_os = "android"))]
         EREMOTE         => "Object is remote",
 
-        #[cfg(target_os = "linux")]
+        #[cfg(any(target_os = "linux", target_os = "android"))]
         ENOLINK         => "Link has been severed",
 
-        #[cfg(target_os = "linux")]
+        #[cfg(any(target_os = "linux", target_os = "android"))]
         EADV            => "Advertise error",
 
-        #[cfg(target_os = "linux")]
+        #[cfg(any(target_os = "linux", target_os = "android"))]
         ESRMNT          => "Srmount error",
 
-        #[cfg(target_os = "linux")]
+        #[cfg(any(target_os = "linux", target_os = "android"))]
         ECOMM           => "Communication error on send",
 
-        #[cfg(target_os = "linux")]
+        #[cfg(any(target_os = "linux", target_os = "android"))]
         EPROTO          => "Protocol error",
 
-        #[cfg(target_os = "linux")]
+        #[cfg(any(target_os = "linux", target_os = "android"))]
         EMULTIHOP       => "Multihop attempted",
 
-        #[cfg(target_os = "linux")]
+        #[cfg(any(target_os = "linux", target_os = "android"))]
         EDOTDOT         => "RFS specific error",
 
-        #[cfg(target_os = "linux")]
+        #[cfg(any(target_os = "linux", target_os = "android"))]
         EBADMSG         => "Not a data message",
 
-        #[cfg(target_os = "linux")]
+        #[cfg(any(target_os = "linux", target_os = "android"))]
         EOVERFLOW       => "Value too large for defined data type",
 
-        #[cfg(target_os = "linux")]
+        #[cfg(any(target_os = "linux", target_os = "android"))]
         ENOTUNIQ        => "Name not unique on network",
 
-        #[cfg(target_os = "linux")]
+        #[cfg(any(target_os = "linux", target_os = "android"))]
         EBADFD          => "File descriptor in bad state",
 
-        #[cfg(target_os = "linux")]
+        #[cfg(any(target_os = "linux", target_os = "android"))]
         EREMCHG         => "Remote address changed",
 
-        #[cfg(target_os = "linux")]
+        #[cfg(any(target_os = "linux", target_os = "android"))]
         ELIBACC         => "Can not acces a needed shared library",
 
-        #[cfg(target_os = "linux")]
+        #[cfg(any(target_os = "linux", target_os = "android"))]
         ELIBBAD         => "Accessing a corrupted shared library",
 
-        #[cfg(target_os = "linux")]
+        #[cfg(any(target_os = "linux", target_os = "android"))]
         ELIBSCN         => ".lib section in a.out corrupted",
 
-        #[cfg(target_os = "linux")]
+        #[cfg(any(target_os = "linux", target_os = "android"))]
         ELIBMAX         => "Attempting to link in too many shared libraries",
 
-        #[cfg(target_os = "linux")]
+        #[cfg(any(target_os = "linux", target_os = "android"))]
         ELIBEXEC        => "Cannot exec a shared library directly",
 
-        #[cfg(target_os = "linux")]
+        #[cfg(any(target_os = "linux", target_os = "android"))]
         EILSEQ          => "Illegal byte sequence",
 
-        #[cfg(target_os = "linux")]
+        #[cfg(any(target_os = "linux", target_os = "android"))]
         ERESTART        => "Interrupted system call should be restarted",
 
-        #[cfg(target_os = "linux")]
+        #[cfg(any(target_os = "linux", target_os = "android"))]
         ESTRPIPE        => "Streams pipe error",
 
-        #[cfg(target_os = "linux")]
+        #[cfg(any(target_os = "linux", target_os = "android"))]
         EUSERS          => "Too many users",
 
-        #[cfg(target_os = "linux")]
+        #[cfg(any(target_os = "linux", target_os = "android"))]
         EOPNOTSUPP      => "Operation not supported on transport endpoint",
 
-        #[cfg(target_os = "linux")]
+        #[cfg(any(target_os = "linux", target_os = "android"))]
         ESTALE          => "Stale file handle",
 
-        #[cfg(target_os = "linux")]
+        #[cfg(any(target_os = "linux", target_os = "android"))]
         EUCLEAN         => "Structure needs cleaning",
 
-        #[cfg(target_os = "linux")]
+        #[cfg(any(target_os = "linux", target_os = "android"))]
         ENOTNAM         => "Not a XENIX named type file",
 
-        #[cfg(target_os = "linux")]
+        #[cfg(any(target_os = "linux", target_os = "android"))]
         ENAVAIL         => "No XENIX semaphores available",
 
-        #[cfg(target_os = "linux")]
+        #[cfg(any(target_os = "linux", target_os = "android"))]
         EISNAM          => "Is a named type file",
 
-        #[cfg(target_os = "linux")]
+        #[cfg(any(target_os = "linux", target_os = "android"))]
         EREMOTEIO       => "Remote I/O error",
 
-        #[cfg(target_os = "linux")]
+        #[cfg(any(target_os = "linux", target_os = "android"))]
         EDQUOT          => "Quota exceeded",
 
-        #[cfg(target_os = "linux")]
+        #[cfg(any(target_os = "linux", target_os = "android"))]
         ENOMEDIUM       => "No medium found",
 
-        #[cfg(target_os = "linux")]
+        #[cfg(any(target_os = "linux", target_os = "android"))]
         EMEDIUMTYPE     => "Wrong medium type",
 
-        #[cfg(target_os = "linux")]
+        #[cfg(any(target_os = "linux", target_os = "android"))]
         ECANCELED       => "Operation canceled",
 
-        #[cfg(target_os = "linux")]
+        #[cfg(any(target_os = "linux", target_os = "android"))]
         ENOKEY          => "Required key not available",
 
-        #[cfg(target_os = "linux")]
+        #[cfg(any(target_os = "linux", target_os = "android"))]
         EKEYEXPIRED     => "Key has expired",
 
-        #[cfg(target_os = "linux")]
+        #[cfg(any(target_os = "linux", target_os = "android"))]
         EKEYREVOKED     => "Key has been revoked",
 
-        #[cfg(target_os = "linux")]
+        #[cfg(any(target_os = "linux", target_os = "android"))]
         EKEYREJECTED    => "Key was rejected by service",
 
-        #[cfg(target_os = "linux")]
+        #[cfg(any(target_os = "linux", target_os = "android"))]
         EOWNERDEAD      => "Owner died",
 
-        #[cfg(target_os = "linux")]
+        #[cfg(any(target_os = "linux", target_os = "android"))]
         ENOTRECOVERABLE => "State not recoverable",
 
         #[cfg(target_os = "linux")]
@@ -394,7 +394,7 @@ fn desc(errno: Errno) -> &'static str {
     }
 }
 
-#[cfg(target_os = "linux")]
+#[cfg(any(target_os = "linux", target_os = "android"))]
 mod consts {
     #[derive(Debug, Clone, PartialEq, FromPrimitive, Copy)]
     pub enum Errno {
@@ -528,7 +528,10 @@ mod consts {
         EKEYREJECTED    = 129,
         EOWNERDEAD      = 130,
         ENOTRECOVERABLE = 131,
+
+        #[cfg(not(target_os = "android"))]
         ERFKILL         = 132,
+        #[cfg(not(target_os = "android"))]
         EHWPOISON       = 133,
     }
 
@@ -667,13 +670,8 @@ mod test {
     use libc::c_int;
 
     macro_rules! check_errno {
-        ($errno:ident) => {{
-            assert_errno_eq(stringify!($errno), $errno as c_int);
-        }};
-
-        ($errno:ident, $($rest:ident),+) => {{
-            check_errno!($errno);
-            check_errno!($($rest),*);
+        ($($errno:ident),+) => {{
+            $(assert_errno_eq(stringify!($errno), $errno as c_int);)+
         }};
     }
 
@@ -754,7 +752,7 @@ mod test {
     }
 
     #[test]
-    #[cfg(target_os = "linux")]
+    #[cfg(any(target_os = "linux", target_os = "android"))]
     pub fn test_linux_errnos() {
         check_errno!(
             ECHRNG,
@@ -816,14 +814,19 @@ mod test {
             EKEYREVOKED,
             EKEYREJECTED,
             EOWNERDEAD,
-            ENOTRECOVERABLE,
+            ENOTRECOVERABLE);
+    }
+
+    #[test]
+    #[cfg(target_os = "linux")]
+    pub fn test_linux_not_android_errnos() {
+        check_errno!(
             ERFKILL,
             EHWPOISON);
     }
 
-
     #[test]
-    #[cfg(target_os = "macos")]
+    #[cfg(any(target_os = "macos", target_os = "ios"))]
     pub fn test_darwin_errnos() {
         check_errno!(
             ENOTSUP,
diff --git a/src/fcntl.rs b/src/fcntl.rs
index 30a59ed6..0a8236a4 100644
--- a/src/fcntl.rs
+++ b/src/fcntl.rs
@@ -14,7 +14,7 @@ mod ffi {
     pub use libc::{open, fcntl};
     pub use self::os::*;
 
-    #[cfg(target_os = "linux")]
+    #[cfg(any(target_os = "linux", target_os = "android"))]
     mod os {
         use libc::{c_int, c_short, off_t, pid_t};
 
@@ -93,11 +93,11 @@ pub enum FcntlArg<'a> {
     F_SETLK(&'a flock),
     F_SETLKW(&'a flock),
     F_GETLK(&'a mut flock),
-    #[cfg(target_os = "linux")]
+    #[cfg(any(target_os = "linux", target_os = "android"))]
     F_OFD_SETLK(&'a flock),
-    #[cfg(target_os = "linux")]
+    #[cfg(any(target_os = "linux", target_os = "android"))]
     F_OFD_SETLKW(&'a flock),
-    #[cfg(target_os = "linux")]
+    #[cfg(any(target_os = "linux", target_os = "android"))]
     F_OFD_GETLK(&'a mut flock)
 
     // TODO: Rest of flags
@@ -122,7 +122,7 @@ pub fn fcntl(fd: Fd, arg: FcntlArg) -> NixResult<()> {
     Ok(())
 }
 
-#[cfg(target_os = "linux")]
+#[cfg(any(target_os = "linux", target_os = "android"))]
 mod consts {
     use libc::c_int;
 
diff --git a/src/features.rs b/src/features.rs
index cb31c914..60022995 100644
--- a/src/features.rs
+++ b/src/features.rs
@@ -1,6 +1,6 @@
 pub use self::os::*;
 
-#[cfg(target_os = "linux")]
+#[cfg(any(target_os = "linux", target_os = "android"))]
 mod os {
     use sys::utsname::uname;
 
diff --git a/src/lib.rs b/src/lib.rs
index 0370cae5..3826b4d7 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -32,10 +32,10 @@ pub mod features;
 #[cfg(unix)]
 pub mod fcntl;
 
-#[cfg(target_os = "linux")]
+#[cfg(any(target_os = "linux", target_os = "android"))]
 pub mod mount;
 
-#[cfg(target_os = "linux")]
+#[cfg(any(target_os = "linux", target_os = "android"))]
 pub mod sched;
 
 #[cfg(unix)]
diff --git a/src/sched.rs b/src/sched.rs
index c8d719ed..0dff3cad 100644
--- a/src/sched.rs
+++ b/src/sched.rs
@@ -29,7 +29,7 @@ pub static CLONE_NEWNET:         CloneFlags = 0x40000000;
 pub static CLONE_IO:             CloneFlags = 0x80000000;
 
 // Support a maximum CPU set of 1024 nodes
-#[cfg(target_arch = "x86_64")]
+#[cfg(all(target_arch = "x86_64", target_os = "linux"))]
 mod cpuset_attribs {
     use super::CpuMask;
     pub const CPU_SETSIZE:           usize = 1024;
@@ -46,7 +46,7 @@ mod cpuset_attribs {
     }
 }
 
-#[cfg(target_arch = "x86")]
+#[cfg(all(target_arch = "x86", target_os = "linux"))]
 mod cpuset_attribs {
     use super::CpuMask;
     pub const CPU_SETSIZE:           usize = 1024us;
@@ -63,6 +63,25 @@ mod cpuset_attribs {
     }
 }
 
+#[cfg(all(target_arch = "arm", target_os = "android"))]
+mod cpuset_attribs {
+    use super::CpuMask;
+    // bionic only supports up to 32 independent CPUs, instead of 1024.
+    pub const CPU_SETSIZE:          usize = 32;
+    pub const CPU_MASK_BITS:        usize = 32;
+
+    #[inline]
+    pub fn set_cpu_mask_flag(cur: CpuMask, bit: usize) -> CpuMask {
+        cur | (1u32 << bit)
+    }
+
+    #[inline]
+    pub fn clear_cpu_mask_flag(cur: CpuMask, bit: usize) -> CpuMask {
+        cur & !(1u32 << bit)
+    }
+}
+
+
 pub type CloneCb<'a> = Box<FnMut() -> isize + 'a>;
 
 // A single CPU mask word
diff --git a/src/sys/epoll.rs b/src/sys/epoll.rs
index b9b31c9a..138680fe 100644
--- a/src/sys/epoll.rs
+++ b/src/sys/epoll.rs
@@ -78,6 +78,22 @@ pub enum EpollOp {
     EpollCtlMod = 3
 }
 
+#[cfg(all(target_os = "android", not(target_arch = "x86_64")))]
+#[derive(Copy)]
+#[repr(C)]
+pub struct EpollEvent {
+    pub events: EpollEventKind,
+    pub data: u64
+}
+
+#[cfg(all(target_os = "android", not(target_arch = "x86_64")))]
+#[test]
+fn test_epoll_event_size() {
+    use std::mem::size_of;
+    assert_eq!(size_of::<EpollEvent>(), 16);
+}
+
+#[cfg(any(not(target_os = "android"), target_arch = "x86_64"))]
 #[derive(Copy)]
 #[repr(C, packed)]
 pub struct EpollEvent {
diff --git a/src/sys/ioctl.rs b/src/sys/ioctl.rs
index 847733f2..516b29bc 100644
--- a/src/sys/ioctl.rs
+++ b/src/sys/ioctl.rs
@@ -22,7 +22,8 @@ mod ffi {
         pub const TIOCGWINSZ: c_ulong = 0x40087468;
     }
 
-    #[cfg(target_os = "linux")]
+    #[cfg(any(target_os = "linux",
+              all(target_os = "android", not(target_arch = "mips"))))]
     pub mod os {
         use libc::c_int;
         pub const TIOCGWINSZ: c_int = 0x5413;
diff --git a/src/sys/mman.rs b/src/sys/mman.rs
index 1b94cc4b..60171a9e 100644
--- a/src/sys/mman.rs
+++ b/src/sys/mman.rs
@@ -6,7 +6,7 @@ use sys::stat::Mode;
 
 pub use self::consts::*;
 
-#[cfg(target_os = "linux")]
+#[cfg(any(target_os = "linux", target_os = "android"))]
 mod consts {
     use libc::c_int;
 
diff --git a/src/sys/mod.rs b/src/sys/mod.rs
index 06688204..c14b02f2 100644
--- a/src/sys/mod.rs
+++ b/src/sys/mod.rs
@@ -1,11 +1,11 @@
 
-#[cfg(target_os = "linux")]
+#[cfg(any(target_os = "linux", target_os = "android"))]
 pub mod epoll;
 
 #[cfg(any(target_os = "macos", target_os = "ios"))]
 pub mod event;
 
-#[cfg(target_os = "linux")]
+#[cfg(any(target_os = "linux", target_os = "android"))]
 pub mod eventfd;
 
 #[cfg(not(target_os = "ios"))]
@@ -17,13 +17,13 @@ pub mod socket;
 
 pub mod stat;
 
-#[cfg(target_os = "linux")]
+#[cfg(any(target_os = "linux", target_os = "android"))]
 pub mod syscall;
 
 #[cfg(not(target_os = "ios"))]
 pub mod termios;
 
-#[cfg(target_os = "linux")]
+#[cfg(any(target_os = "linux", target_os = "android"))]
 pub mod utsname;
 
 pub mod wait;
diff --git a/src/sys/socket/consts.rs b/src/sys/socket/consts.rs
index 3131cfb8..481f133a 100644
--- a/src/sys/socket/consts.rs
+++ b/src/sys/socket/consts.rs
@@ -1,6 +1,6 @@
 pub use self::os::*;
 
-#[cfg(target_os = "linux")]
+#[cfg(any(target_os = "linux", target_os = "android"))]
 mod os {
     use libc::{c_int, uint8_t};
 
diff --git a/src/sys/socket/mod.rs b/src/sys/socket/mod.rs
index 6b317dec..0480a020 100644
--- a/src/sys/socket/mod.rs
+++ b/src/sys/socket/mod.rs
@@ -132,7 +132,7 @@ pub fn accept(sockfd: Fd) -> NixResult<Fd> {
 /// Accept a connection on a socket
 ///
 /// [Further reading](http://man7.org/linux/man-pages/man2/accept.2.html)
-#[cfg(not(any(target_os = "macos", target_os = "ios")))]
+#[cfg(not(any(target_os = "macos", target_os = "ios", target_os = "android")))]
 pub fn accept4(sockfd: Fd, flags: SockFlag) -> NixResult<Fd> {
     use libc::sockaddr;
 
@@ -162,7 +162,7 @@ pub fn accept4(sockfd: Fd, flags: SockFlag) -> NixResult<Fd> {
 /// Accept a connection on a socket
 ///
 /// [Further reading](http://man7.org/linux/man-pages/man2/accept.2.html)
-#[cfg(any(target_os = "macos", target_os = "ios"))]
+#[cfg(any(target_os = "macos", target_os = "ios", target_os = "android"))]
 pub fn accept4(sockfd: Fd, flags: SockFlag) -> NixResult<Fd> {
     accept4_polyfill(sockfd, flags)
 }
diff --git a/src/sys/syscall.rs b/src/sys/syscall.rs
index cdf6c414..0f6a5e0b 100644
--- a/src/sys/syscall.rs
+++ b/src/sys/syscall.rs
@@ -22,6 +22,16 @@ mod arch {
     pub static SYSPIVOTROOT: Syscall = 217;
 }
 
+#[cfg(target_arch = "arm")]
+mod arch {
+    use libc::c_long;
+
+    pub type Syscall = c_long;
+
+    pub static SYSPIVOTROOT: Syscall = 218;
+}
+
+
 extern {
     pub fn syscall(num: Syscall, ...) -> c_int;
 }
diff --git a/src/sys/termios.rs b/src/sys/termios.rs
index 56beca2e..7ef2ca57 100644
--- a/src/sys/termios.rs
+++ b/src/sys/termios.rs
@@ -17,6 +17,7 @@ mod ffi {
     // `Termios` contains bitflags which are not considered
     // `foreign-function-safe` by the compiler.
     #[allow(improper_ctypes)]
+    #[cfg(any(target_os = "macos", target_os = "linux"))]
     extern {
         pub fn cfgetispeed(termios: *const Termios) -> speed_t;
         pub fn cfgetospeed(termios: *const Termios) -> speed_t;
@@ -32,6 +33,62 @@ mod ffi {
         pub fn tcsendbreak(fd: c_int, duration: c_int) -> c_int;
     }
 
+    // On Android before 5.0, Bionic directly inline these to ioctl() calls.
+    #[inline]
+    #[cfg(all(target_os = "android", not(target_arch = "mips")))]
+    mod android {
+        use libc::funcs::bsd44::ioctl;
+        use libc::c_int;
+        use super::consts::*;
+
+        const TCGETS: c_int = 0x5401;
+        const TCSBRK: c_int = 0x5409;
+        const TCXONC: c_int = 0x540a;
+        const TCFLSH: c_int = 0x540b;
+        const TCSBRKP: c_int = 0x5425;
+
+        pub unsafe fn cfgetispeed(termios: *const Termios) -> speed_t {
+            ((*termios).c_cflag & CBAUD).bits() as speed_t
+        }
+        pub unsafe fn cfgetospeed(termios: *const Termios) -> speed_t {
+            ((*termios).c_cflag & CBAUD).bits() as speed_t
+        }
+        pub unsafe fn cfsetispeed(termios: *mut Termios, speed: speed_t) -> c_int {
+            (*termios).c_cflag.remove(CBAUD);
+            (*termios).c_cflag.insert(ControlFlags::from_bits_truncate(speed) & CBAUD);
+            0
+        }
+        pub unsafe fn cfsetospeed(termios: *mut Termios, speed: speed_t) -> c_int {
+            (*termios).c_cflag.remove(CBAUD);
+            (*termios).c_cflag.insert(ControlFlags::from_bits_truncate(speed) & CBAUD);
+            0
+        }
+        pub unsafe fn tcgetattr(fd: c_int, termios: *mut Termios) -> c_int {
+            ioctl(fd, TCGETS, termios)
+        }
+        pub unsafe fn tcsetattr(fd: c_int,
+                                optional_actions: c_int,
+                                termios: *const Termios) -> c_int {
+            ioctl(fd, optional_actions, termios)
+        }
+        pub unsafe fn tcdrain(fd: c_int) -> c_int {
+            ioctl(fd, TCSBRK, 1)
+        }
+        pub unsafe fn tcflow(fd: c_int, action: c_int) -> c_int {
+            ioctl(fd, TCXONC, action)
+        }
+        pub unsafe fn tcflush(fd: c_int, action: c_int) -> c_int {
+            ioctl(fd, TCFLSH, action)
+        }
+        pub unsafe fn tcsendbreak(fd: c_int, duration: c_int) -> c_int {
+            ioctl(fd, TCSBRKP, duration)
+        }
+    }
+
+    #[cfg(target_os = "android")]
+    pub use self::android::*;
+
+
     #[cfg(target_os = "macos")]
     pub mod consts {
         use libc::{c_int, c_ulong, c_uchar};
@@ -198,7 +255,7 @@ mod ffi {
         }
     }
 
-    #[cfg(target_os = "linux")]
+    #[cfg(any(target_os = "linux", target_os = "android"))]
     pub mod consts {
         use libc::{c_int, c_uint, c_uchar};
 
@@ -277,6 +334,8 @@ mod ffi {
                 const HUPCL      = 0x00000400,
                 const CLOCAL     = 0x00000800,
                 const CRTSCTS    = 0x80000000,
+                #[cfg(target_os = "android")]
+                const CBAUD      = 0o0010017,
             }
         }
 
diff --git a/src/unistd.rs b/src/unistd.rs
index a54bba3a..d07a170a 100644
--- a/src/unistd.rs
+++ b/src/unistd.rs
@@ -8,7 +8,7 @@ use libc::{c_char, c_void, c_int, size_t, pid_t, off_t};
 use std::{mem, ptr};
 use std::ffi::CString;
 
-#[cfg(target_os = "linux")]
+#[cfg(any(target_os = "linux", target_os = "android"))]
 pub use self::linux::*;
 
 mod ffi {
@@ -245,7 +245,7 @@ pub fn pipe() -> NixResult<(Fd, Fd)> {
     }
 }
 
-#[cfg(target_os = "linux")]
+#[cfg(any(target_os = "linux", target_os = "android"))]
 pub fn pipe2(flags: OFlag) -> NixResult<(Fd, Fd)> {
     type F = unsafe extern "C" fn(fds: *mut c_int, flags: c_int) -> c_int;
 
@@ -354,7 +354,7 @@ pub fn unlink<P: ?Sized + NixPath>(path: &P) -> NixResult<()> {
     from_ffi(res)
 }
 
-#[cfg(target_os = "linux")]
+#[cfg(any(target_os = "linux", target_os = "android"))]
 mod linux {
     use sys::syscall::{syscall, SYSPIVOTROOT};
     use errno::Errno;