diff --git a/NEWS b/NEWS
index b58e2469d4..5e6ecb9c7d 100644
--- a/NEWS
+++ b/NEWS
@@ -18,6 +18,9 @@ Major new features:
 
 * On Linux, the gettid function has been added.
 
+* On Linux, <termios.h> now provides a definition of struct termios2 with
+  the _GNU_SOURCE feature test macro.
+
 * Minguo (Republic of China) calendar support has been added as an
   alternative calendar for the following locales: zh_TW, cmn_TW, hak_TW,
   nan_TW, lzh_TW.
diff --git a/sysdeps/unix/sysv/linux/Makefile b/sysdeps/unix/sysv/linux/Makefile
index 52ac6ad484..4cb5e4f0d2 100644
--- a/sysdeps/unix/sysv/linux/Makefile
+++ b/sysdeps/unix/sysv/linux/Makefile
@@ -156,6 +156,7 @@ endif
 
 ifeq ($(subdir),termios)
 sysdep_headers += termio.h
+tests += tst-termios2
 endif
 
 ifeq ($(subdir),posix)
diff --git a/sysdeps/unix/sysv/linux/alpha/bits/termios2-struct.h b/sysdeps/unix/sysv/linux/alpha/bits/termios2-struct.h
new file mode 100644
index 0000000000..5f09445e23
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/alpha/bits/termios2-struct.h
@@ -0,0 +1,33 @@
+/* struct termios2 definition.  Linux/alpha version.
+   Copyright (C) 2019 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#ifndef _TERMIOS_H
+# error "Never include <bits/termios2-struct.h> directly; use <termios.h> instead."
+#endif
+
+struct termios2
+{
+  tcflag_t c_iflag;
+  tcflag_t c_oflag;
+  tcflag_t c_cflag;
+  tcflag_t c_lflag;
+  cc_t c_cc[NCCS];
+  cc_t c_line;
+  speed_t c_ispeed;
+  speed_t c_ospeed;
+};
diff --git a/sysdeps/unix/sysv/linux/bits/termios.h b/sysdeps/unix/sysv/linux/bits/termios.h
index 997231cd03..45ac7affdf 100644
--- a/sysdeps/unix/sysv/linux/bits/termios.h
+++ b/sysdeps/unix/sysv/linux/bits/termios.h
@@ -25,6 +25,10 @@ typedef unsigned int	speed_t;
 typedef unsigned int	tcflag_t;
 
 #include <bits/termios-struct.h>
+#ifdef __USE_GNU
+# include <bits/termios2-struct.h>
+#endif
+
 #include <bits/termios-c_cc.h>
 #include <bits/termios-c_iflag.h>
 #include <bits/termios-c_oflag.h>
diff --git a/sysdeps/unix/sysv/linux/bits/termios2-struct.h b/sysdeps/unix/sysv/linux/bits/termios2-struct.h
new file mode 100644
index 0000000000..5a48e45ef3
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/bits/termios2-struct.h
@@ -0,0 +1,33 @@
+/* struct termios2 definition.  Linux/generic version.
+   Copyright (C) 2019 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#ifndef _TERMIOS_H
+# error "Never include <bits/termios2-struct.h> directly; use <termios.h> instead."
+#endif
+
+struct termios2
+{
+  tcflag_t c_iflag;
+  tcflag_t c_oflag;
+  tcflag_t c_cflag;
+  tcflag_t c_lflag;
+  cc_t c_line;
+  cc_t c_cc[NCCS];
+  speed_t c_ispeed;
+  speed_t c_ospeed;
+};
diff --git a/sysdeps/unix/sysv/linux/sparc/bits/termios2-struct.h b/sysdeps/unix/sysv/linux/sparc/bits/termios2-struct.h
new file mode 100644
index 0000000000..7c889e575c
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/sparc/bits/termios2-struct.h
@@ -0,0 +1,33 @@
+/* struct termios2 definition.  Linux/sparc version.
+   Copyright (C) 2019 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#ifndef _TERMIOS_H
+# error "Never include <bits/termios2-struct.h> directly; use <termios.h> instead."
+#endif
+
+struct termios2
+{
+  tcflag_t c_iflag;
+  tcflag_t c_oflag;
+  tcflag_t c_cflag;
+  tcflag_t c_lflag;
+  cc_t c_line;
+  cc_t c_cc[NCCS + 2];
+  speed_t c_ispeed;
+  speed_t c_ospeed;
+};
diff --git a/sysdeps/unix/sysv/linux/tst-termios2.c b/sysdeps/unix/sysv/linux/tst-termios2.c
new file mode 100644
index 0000000000..82326a1288
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/tst-termios2.c
@@ -0,0 +1,48 @@
+/* Minimal test of struct termios2 definition.
+   Copyright (C) 2019 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <termios.h>
+#include <sys/ioctl.h>
+
+/* This function is never executed, but must be compiled successfully.
+   Accessing serial ports in the test suite is problematic because
+   they likely correspond with low-level system functionality.  */
+void
+not_executed (int fd)
+{
+  /* Avoid a compilation failure if TCGETS2, TCSETS2 are not
+     defined.  */
+#if defined (TCGETS2) && defined (TCSETS2)
+  struct termios2 ti;
+  ioctl (fd, TCGETS2, &ti);
+  ioctl (fd, TCSETS2, &ti);
+#endif
+}
+
+static int
+do_test (void)
+{
+  /* Fail at run time if TCGETS2 or TCSETS2 is not defined.  */
+#if defined (TCGETS2) && defined (TCSETS2)
+  return 0;
+#else
+  return 1;
+#endif
+}
+
+#include <support/test-driver.c>
