diff --git a/libc/include/bits/termios_inlines.h b/libc/include/bits/termios_inlines.h
new file mode 100644
index 0000000..d49167e
--- /dev/null
+++ b/libc/include/bits/termios_inlines.h
@@ -0,0 +1,119 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef _BITS_TERMIOS_INLINES_H_
+#define _BITS_TERMIOS_INLINES_H_
+
+#include <errno.h>
+#include <sys/cdefs.h>
+#include <sys/ioctl.h>
+#include <sys/types.h>
+
+#include <linux/termios.h>
+
+#if !defined(__BIONIC_TERMIOS_INLINE)
+#define __BIONIC_TERMIOS_INLINE static __inline
+#endif
+
+__BEGIN_DECLS
+
+static __inline speed_t cfgetspeed(const struct termios* s) {
+  return __BIONIC_CAST(static_cast, speed_t, s->c_cflag & CBAUD);
+}
+
+__BIONIC_TERMIOS_INLINE speed_t cfgetispeed(const struct termios* s) {
+  return cfgetspeed(s);
+}
+
+__BIONIC_TERMIOS_INLINE speed_t cfgetospeed(const struct termios* s) {
+  return cfgetspeed(s);
+}
+
+__BIONIC_TERMIOS_INLINE void cfmakeraw(struct termios* s) {
+  s->c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP|INLCR|IGNCR|ICRNL|IXON);
+  s->c_oflag &= ~OPOST;
+  s->c_lflag &= ~(ECHO|ECHONL|ICANON|ISIG|IEXTEN);
+  s->c_cflag &= ~(CSIZE|PARENB);
+  s->c_cflag |= CS8;
+}
+
+__BIONIC_TERMIOS_INLINE int cfsetspeed(struct termios* s, speed_t speed) {
+  // TODO: check 'speed' is valid.
+  s->c_cflag = (s->c_cflag & ~CBAUD) | (speed & CBAUD);
+  return 0;
+}
+
+__BIONIC_TERMIOS_INLINE int cfsetispeed(struct termios* s, speed_t speed) {
+  return cfsetspeed(s, speed);
+}
+
+__BIONIC_TERMIOS_INLINE int cfsetospeed(struct termios* s, speed_t speed) {
+  return cfsetspeed(s, speed);
+}
+
+__BIONIC_TERMIOS_INLINE int tcdrain(int fd) {
+  // A non-zero argument to TCSBRK means "don't send a break".
+  // The drain is a side-effect of the ioctl!
+  return ioctl(fd, TCSBRK, __BIONIC_CAST(static_cast, unsigned long, 1));
+}
+
+__BIONIC_TERMIOS_INLINE int tcflow(int fd, int action) {
+  return ioctl(fd, TCXONC, __BIONIC_CAST(static_cast, unsigned long, action));
+}
+
+__BIONIC_TERMIOS_INLINE int tcflush(int fd, int queue) {
+  return ioctl(fd, TCFLSH, __BIONIC_CAST(static_cast, unsigned long, queue));
+}
+
+__BIONIC_TERMIOS_INLINE int tcgetattr(int fd, struct termios* s) {
+  return ioctl(fd, TCGETS, s);
+}
+
+__BIONIC_TERMIOS_INLINE pid_t tcgetsid(int fd) {
+  pid_t sid;
+  return (ioctl(fd, TIOCGSID, &sid) == -1) ? -1 : sid;
+}
+
+__BIONIC_TERMIOS_INLINE int tcsendbreak(int fd, int duration) {
+  return ioctl(fd, TCSBRKP, __BIONIC_CAST(static_cast, unsigned long, duration));
+}
+
+__BIONIC_TERMIOS_INLINE int tcsetattr(int fd, int optional_actions, const struct termios* s) {
+  int cmd;
+  switch (optional_actions) {
+    case TCSANOW: cmd = TCSETS; break;
+    case TCSADRAIN: cmd = TCSETSW; break;
+    case TCSAFLUSH: cmd = TCSETSF; break;
+    default: errno = EINVAL; return -1;
+  }
+  return ioctl(fd, cmd, s);
+}
+
+__END_DECLS
+
+#endif