[v2,02/12] termios: Consolidate struct termios

Message ID 20181228011001.22260-3-adhemerval.zanella@linaro.org
State New
Headers show
Series
  • Linux termios refactor
Related show

Commit Message

Adhemerval Zanella Dec. 28, 2018, 1:09 a.m.
This patch consolidates the struct termios definition on its own header
and adds arch-defined ones for ABIs that deviate from generic
implementation. They are:

  - alpha which has a slight different layout than generic one (c_cc
    field is defined prior c_line).

  - sparc and mips which do not have the c_ispeed/c_ospeed fields.

No semantic change is expected, checked on a build against x86_64-linux-gnu,
alpha-linux-gnu, mips64-linux-gnu, and sparc64-linux-gnu.

	* sysdeps/unix/sysv/linux/alpha/bits/termios-struct.h: New file.
	* sysdeps/unix/sysv/linux/bits/termios-struct.h: Likewise.
	* sysdeps/unix/sysv/linux/mips/bits/termios-struct.h: Likewise.
	* sysdeps/unix/sysv/linux/sparc/bits/termios-struct.h: Likewise.
	* sysdeps/unix/sysv/linux/Makefile (sysdep_headers): Add
	termios-struct.h.
	* sysdeps/unix/sysv/linux/bits/termios.h (struct termios): Move to
	termios-struct.h.
	* sysdeps/unix/sysv/linux/alpha/bits/termios.h (struct termios):
	Likewise.
	* sysdeps/unix/sysv/linux/mips/bits/termios.h (struct termios):
	Likewise.
	* sysdeps/unix/sysv/linux/powerpc/bits/termios.h (struct termios):
	Likewise.
	* sysdeps/unix/sysv/linux/sparc/bits/termios.h (struct termios):
	Likewise.
	* sysdeps/unix/sysv/linux/kernel_termios.h (_HAVE_C_ISPEED,
	_HAVE_C_OSPEED): Define.
	* sysdeps/unix/sysv/linux/mips/kernel_termios.h (_HAVE_C_ISPEED,
	_HAVE_C_OSPEED): Likewise.
	* sysdeps/unix/sysv/linux/sparc/kernel_termios.h (_HAVE_C_ISPEED,
	_HAVE_C_OSPEED): Likewise.
	* sysdeps/unix/sysv/linux/speed.c [_HAVE_STRUCT_TERMIOS_C_OSPEED]
	(cfsetospeed): Check for define value instead of existence.
	[_HAVE_STRUCT_TERMIOS_C_ISPEED] (cfsetispeed): Likewise.
	* sysdeps/unix/sysv/linux/tcgetattr.c [_HAVE_STRUCT_TERMIOS_C_ISPEED
	&& _HAVE_C_ISPEED] (__tcgetattr): Likewise.
	* sysdeps/unix/sysv/linux/tcsetattr.c [_HAVE_STRUCT_TERMIOS_C_ISPEED
	&& _HAVE_C_ISPEED] (__tcsetattr): Likewise.
---
 sysdeps/unix/sysv/linux/Makefile              |  3 +-
 .../sysv/linux/alpha/bits/termios-struct.h    | 37 +++++++++++++++++++
 sysdeps/unix/sysv/linux/alpha/bits/termios.h  | 15 +-------
 sysdeps/unix/sysv/linux/bits/termios-struct.h | 36 ++++++++++++++++++
 sysdeps/unix/sysv/linux/bits/termios.h        | 15 +-------
 sysdeps/unix/sysv/linux/kernel_termios.h      |  3 ++
 .../sysv/linux/mips/bits/termios-struct.h     | 34 +++++++++++++++++
 sysdeps/unix/sysv/linux/mips/bits/termios.h   | 11 +-----
 sysdeps/unix/sysv/linux/mips/kernel_termios.h |  3 ++
 .../unix/sysv/linux/powerpc/bits/termios.h    | 20 +---------
 .../sysv/linux/sparc/bits/termios-struct.h    | 34 +++++++++++++++++
 sysdeps/unix/sysv/linux/sparc/bits/termios.h  | 11 +-----
 .../unix/sysv/linux/sparc/kernel_termios.h    |  3 ++
 sysdeps/unix/sysv/linux/speed.c               |  4 +-
 sysdeps/unix/sysv/linux/tcgetattr.c           |  8 ++--
 sysdeps/unix/sysv/linux/tcsetattr.c           |  4 +-
 16 files changed, 165 insertions(+), 76 deletions(-)
 create mode 100644 sysdeps/unix/sysv/linux/alpha/bits/termios-struct.h
 create mode 100644 sysdeps/unix/sysv/linux/bits/termios-struct.h
 create mode 100644 sysdeps/unix/sysv/linux/mips/bits/termios-struct.h
 create mode 100644 sysdeps/unix/sysv/linux/sparc/bits/termios-struct.h

Comments

Siddhesh Poyarekar Dec. 31, 2018, 3:24 p.m. | #1
On 28/12/18 6:39 AM, Adhemerval Zanella wrote:
> This patch consolidates the struct termios definition on its own header
> and adds arch-defined ones for ABIs that deviate from generic
> implementation. They are:
> 
>    - alpha which has a slight different layout than generic one (c_cc
>      field is defined prior c_line).
> 
>    - sparc and mips which do not have the c_ispeed/c_ospeed fields.
> 
> No semantic change is expected, checked on a build against x86_64-linux-gnu,
> alpha-linux-gnu, mips64-linux-gnu, and sparc64-linux-gnu.
> 
> 	* sysdeps/unix/sysv/linux/alpha/bits/termios-struct.h: New file.
> 	* sysdeps/unix/sysv/linux/bits/termios-struct.h: Likewise.
> 	* sysdeps/unix/sysv/linux/mips/bits/termios-struct.h: Likewise.
> 	* sysdeps/unix/sysv/linux/sparc/bits/termios-struct.h: Likewise.
> 	* sysdeps/unix/sysv/linux/Makefile (sysdep_headers): Add
> 	termios-struct.h.
> 	* sysdeps/unix/sysv/linux/bits/termios.h (struct termios): Move to
> 	termios-struct.h.
> 	* sysdeps/unix/sysv/linux/alpha/bits/termios.h (struct termios):
> 	Likewise.
> 	* sysdeps/unix/sysv/linux/mips/bits/termios.h (struct termios):
> 	Likewise.
> 	* sysdeps/unix/sysv/linux/powerpc/bits/termios.h (struct termios):
> 	Likewise.
> 	* sysdeps/unix/sysv/linux/sparc/bits/termios.h (struct termios):
> 	Likewise.
> 	* sysdeps/unix/sysv/linux/kernel_termios.h (_HAVE_C_ISPEED,
> 	_HAVE_C_OSPEED): Define.
> 	* sysdeps/unix/sysv/linux/mips/kernel_termios.h (_HAVE_C_ISPEED,
> 	_HAVE_C_OSPEED): Likewise.
> 	* sysdeps/unix/sysv/linux/sparc/kernel_termios.h (_HAVE_C_ISPEED,
> 	_HAVE_C_OSPEED): Likewise.
> 	* sysdeps/unix/sysv/linux/speed.c [_HAVE_STRUCT_TERMIOS_C_OSPEED]
> 	(cfsetospeed): Check for define value instead of existence.
> 	[_HAVE_STRUCT_TERMIOS_C_ISPEED] (cfsetispeed): Likewise.
> 	* sysdeps/unix/sysv/linux/tcgetattr.c [_HAVE_STRUCT_TERMIOS_C_ISPEED
> 	&& _HAVE_C_ISPEED] (__tcgetattr): Likewise.
> 	* sysdeps/unix/sysv/linux/tcsetattr.c [_HAVE_STRUCT_TERMIOS_C_ISPEED
> 	&& _HAVE_C_ISPEED] (__tcsetattr): Likewise.

OK, I assume you've tested to ensure that there are no codegen changes 
due to this.  An easy way to do that is to compare output of objdump -d 
with and without the change.

Siddhesh

Patch

diff --git a/sysdeps/unix/sysv/linux/Makefile b/sysdeps/unix/sysv/linux/Makefile
index f8274552a7..f9c886448a 100644
--- a/sysdeps/unix/sysv/linux/Makefile
+++ b/sysdeps/unix/sysv/linux/Makefile
@@ -43,7 +43,8 @@  sysdep_headers += sys/mount.h sys/acct.h sys/sysctl.h \
 		  bits/siginfo-arch.h bits/siginfo-consts-arch.h \
 		  bits/procfs.h bits/procfs-id.h bits/procfs-extra.h \
 		  bits/procfs-prregset.h bits/mman-map-flags-generic.h \
-		  bits/msq-pad.h bits/sem-pad.h bits/shmlba.h bits/shm-pad.h
+		  bits/msq-pad.h bits/sem-pad.h bits/shmlba.h bits/shm-pad.h \
+		  bits/termios-struct.h
 
 tests += tst-clone tst-clone2 tst-clone3 tst-fanotify tst-personality \
 	 tst-quota tst-sync_file_range tst-sysconf-iov_max tst-ttyname \
diff --git a/sysdeps/unix/sysv/linux/alpha/bits/termios-struct.h b/sysdeps/unix/sysv/linux/alpha/bits/termios-struct.h
new file mode 100644
index 0000000000..268988c1a4
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/alpha/bits/termios-struct.h
@@ -0,0 +1,37 @@ 
+/* struct termios definition.  Linux/alpha version.
+   Copyright (C) 2018 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/termios-struct.h> directly; use <termios.h> instead."
+#endif
+
+/* Alpha has C_CC before C_LINE compare to Linux generic definition.  */
+#define NCCS 32
+struct termios
+  {
+    tcflag_t c_iflag;		/* input mode flags */
+    tcflag_t c_oflag;		/* output mode flags */
+    tcflag_t c_cflag;		/* control mode flags */
+    tcflag_t c_lflag;		/* local mode flags */
+    cc_t c_cc[NCCS];		/* control characters */
+    cc_t c_line;		/* line discipline (== c_cc[33]) */
+    speed_t c_ispeed;		/* input speed */
+    speed_t c_ospeed;		/* output speed */
+#define _HAVE_STRUCT_TERMIOS_C_ISPEED 1
+#define _HAVE_STRUCT_TERMIOS_C_OSPEED 1
+  };
diff --git a/sysdeps/unix/sysv/linux/alpha/bits/termios.h b/sysdeps/unix/sysv/linux/alpha/bits/termios.h
index 24423e8fc9..fe358dd8f5 100644
--- a/sysdeps/unix/sysv/linux/alpha/bits/termios.h
+++ b/sysdeps/unix/sysv/linux/alpha/bits/termios.h
@@ -24,20 +24,7 @@  typedef unsigned char	cc_t;
 typedef unsigned int	speed_t;
 typedef unsigned int	tcflag_t;
 
-#define NCCS 32
-struct termios
-  {
-    tcflag_t c_iflag;		/* input mode flags */
-    tcflag_t c_oflag;		/* output mode flags */
-    tcflag_t c_cflag;		/* control mode flags */
-    tcflag_t c_lflag;		/* local mode flags */
-    cc_t c_cc[NCCS];		/* control characters */
-    cc_t c_line;		/* line discipline (== c_cc[33]) */
-    speed_t c_ispeed;		/* input speed */
-    speed_t c_ospeed;		/* output speed */
-#define _HAVE_STRUCT_TERMIOS_C_ISPEED 1
-#define _HAVE_STRUCT_TERMIOS_C_OSPEED 1
-  };
+#include <bits/termios-struct.h>
 
 /* c_cc characters */
 #define VEOF 0
diff --git a/sysdeps/unix/sysv/linux/bits/termios-struct.h b/sysdeps/unix/sysv/linux/bits/termios-struct.h
new file mode 100644
index 0000000000..ba56a547c1
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/bits/termios-struct.h
@@ -0,0 +1,36 @@ 
+/* struct termios definition.  Linux/generic version.
+   Copyright (C) 2018 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/termios-struct.h> directly; use <termios.h> instead."
+#endif
+
+#define NCCS 32
+struct termios
+  {
+    tcflag_t c_iflag;		/* input mode flags */
+    tcflag_t c_oflag;		/* output mode flags */
+    tcflag_t c_cflag;		/* control mode flags */
+    tcflag_t c_lflag;		/* local mode flags */
+    cc_t c_line;			/* line discipline */
+    cc_t c_cc[NCCS];		/* control characters */
+    speed_t c_ispeed;		/* input speed */
+    speed_t c_ospeed;		/* output speed */
+#define _HAVE_STRUCT_TERMIOS_C_ISPEED 1
+#define _HAVE_STRUCT_TERMIOS_C_OSPEED 1
+  };
diff --git a/sysdeps/unix/sysv/linux/bits/termios.h b/sysdeps/unix/sysv/linux/bits/termios.h
index 1e567affc3..93536130aa 100644
--- a/sysdeps/unix/sysv/linux/bits/termios.h
+++ b/sysdeps/unix/sysv/linux/bits/termios.h
@@ -24,20 +24,7 @@  typedef unsigned char	cc_t;
 typedef unsigned int	speed_t;
 typedef unsigned int	tcflag_t;
 
-#define NCCS 32
-struct termios
-  {
-    tcflag_t c_iflag;		/* input mode flags */
-    tcflag_t c_oflag;		/* output mode flags */
-    tcflag_t c_cflag;		/* control mode flags */
-    tcflag_t c_lflag;		/* local mode flags */
-    cc_t c_line;			/* line discipline */
-    cc_t c_cc[NCCS];		/* control characters */
-    speed_t c_ispeed;		/* input speed */
-    speed_t c_ospeed;		/* output speed */
-#define _HAVE_STRUCT_TERMIOS_C_ISPEED 1
-#define _HAVE_STRUCT_TERMIOS_C_OSPEED 1
-  };
+#include <bits/termios-struct.h>
 
 /* c_cc characters */
 #define VINTR 0
diff --git a/sysdeps/unix/sysv/linux/kernel_termios.h b/sysdeps/unix/sysv/linux/kernel_termios.h
index 6f505c7b61..cd000af833 100644
--- a/sysdeps/unix/sysv/linux/kernel_termios.h
+++ b/sysdeps/unix/sysv/linux/kernel_termios.h
@@ -31,4 +31,7 @@  struct __kernel_termios
     cc_t c_cc[__KERNEL_NCCS];	/* control characters */
   };
 
+#define _HAVE_C_ISPEED 0
+#define _HAVE_C_OSPEED 0
+
 #endif /* kernel_termios.h */
diff --git a/sysdeps/unix/sysv/linux/mips/bits/termios-struct.h b/sysdeps/unix/sysv/linux/mips/bits/termios-struct.h
new file mode 100644
index 0000000000..f7684e51f1
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/mips/bits/termios-struct.h
@@ -0,0 +1,34 @@ 
+/* struct termios definition.  Linux/mips version.
+   Copyright (C) 2018 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/termios-struct.h> directly; use <termios.h> instead."
+#endif
+
+#define NCCS 32
+struct termios
+  {
+    tcflag_t c_iflag;		/* input mode flags */
+    tcflag_t c_oflag;		/* output mode flags */
+    tcflag_t c_cflag;		/* control mode flags */
+    tcflag_t c_lflag;		/* local mode flags */
+    cc_t c_line;		/* line discipline */
+    cc_t c_cc[NCCS];		/* control characters */
+#define _HAVE_STRUCT_TERMIOS_C_ISPEED 0
+#define _HAVE_STRUCT_TERMIOS_C_OSPEED 0
+  };
diff --git a/sysdeps/unix/sysv/linux/mips/bits/termios.h b/sysdeps/unix/sysv/linux/mips/bits/termios.h
index 7969144633..2b2f873f35 100644
--- a/sysdeps/unix/sysv/linux/mips/bits/termios.h
+++ b/sysdeps/unix/sysv/linux/mips/bits/termios.h
@@ -24,16 +24,7 @@  typedef unsigned char	cc_t;
 typedef unsigned int	speed_t;
 typedef unsigned int	tcflag_t;
 
-#define NCCS 32
-struct termios
-  {
-    tcflag_t c_iflag;		/* input mode flags */
-    tcflag_t c_oflag;		/* output mode flags */
-    tcflag_t c_cflag;		/* control mode flags */
-    tcflag_t c_lflag;		/* local mode flags */
-    cc_t c_line;		/* line discipline */
-    cc_t c_cc[NCCS];		/* control characters */
-  };
+#include <bits/termios-struct.h>
 
 /* c_cc characters */
 #define VINTR		0	/* Interrupt character [ISIG].  */
diff --git a/sysdeps/unix/sysv/linux/mips/kernel_termios.h b/sysdeps/unix/sysv/linux/mips/kernel_termios.h
index 1c54b19428..5f88c745a0 100644
--- a/sysdeps/unix/sysv/linux/mips/kernel_termios.h
+++ b/sysdeps/unix/sysv/linux/mips/kernel_termios.h
@@ -31,4 +31,7 @@  struct __kernel_termios
     cc_t c_cc[__KERNEL_NCCS];	/* control characters */
   };
 
+#define _HAVE_C_ISPEED 0
+#define _HAVE_C_OSPEED 0
+
 #endif /* kernel_termios.h */
diff --git a/sysdeps/unix/sysv/linux/powerpc/bits/termios.h b/sysdeps/unix/sysv/linux/powerpc/bits/termios.h
index afe592d5e4..ddb32bd7e5 100644
--- a/sysdeps/unix/sysv/linux/powerpc/bits/termios.h
+++ b/sysdeps/unix/sysv/linux/powerpc/bits/termios.h
@@ -23,25 +23,7 @@  typedef unsigned char	cc_t;
 typedef unsigned int	speed_t;
 typedef unsigned int	tcflag_t;
 
-/*
- * termios type and macro definitions.  Be careful about adding stuff
- * to this file since it's used in GNU libc and there are strict rules
- * concerning namespace pollution.
- */
-
-#define NCCS 32
-struct termios {
-	tcflag_t c_iflag;		/* input mode flags */
-	tcflag_t c_oflag;		/* output mode flags */
-	tcflag_t c_cflag;		/* control mode flags */
-	tcflag_t c_lflag;		/* local mode flags */
-	cc_t c_line;			/* line discipline (== c_cc[19]) */
-	cc_t c_cc[NCCS];		/* control characters */
-	speed_t c_ispeed;		/* input speed */
-	speed_t c_ospeed;		/* output speed */
-#define _HAVE_STRUCT_TERMIOS_C_ISPEED 1
-#define _HAVE_STRUCT_TERMIOS_C_OSPEED 1
-};
+#include <bits/termios-struct.h>
 
 /* c_cc characters */
 #define VINTR	0
diff --git a/sysdeps/unix/sysv/linux/sparc/bits/termios-struct.h b/sysdeps/unix/sysv/linux/sparc/bits/termios-struct.h
new file mode 100644
index 0000000000..7c3489e1b9
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/sparc/bits/termios-struct.h
@@ -0,0 +1,34 @@ 
+/* struct termios definition.  Linux/sparc version.
+   Copyright (C) 2018 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/termios-struct.h> directly; use <termios.h> instead."
+#endif
+
+#define NCCS 17
+struct termios
+  {
+    tcflag_t c_iflag;		/* input mode flags */
+    tcflag_t c_oflag;		/* output mode flags */
+    tcflag_t c_cflag;		/* control mode flags */
+    tcflag_t c_lflag;		/* local mode flags */
+    cc_t c_line;		/* line discipline */
+    cc_t c_cc[NCCS];		/* control characters */
+#define _HAVE_STRUCT_TERMIOS_C_ISPEED 0
+#define _HAVE_STRUCT_TERMIOS_C_OSPEED 0
+  };
diff --git a/sysdeps/unix/sysv/linux/sparc/bits/termios.h b/sysdeps/unix/sysv/linux/sparc/bits/termios.h
index ffe8483694..5fd6055c8e 100644
--- a/sysdeps/unix/sysv/linux/sparc/bits/termios.h
+++ b/sysdeps/unix/sysv/linux/sparc/bits/termios.h
@@ -24,16 +24,7 @@  typedef unsigned char cc_t;
 typedef unsigned int speed_t;
 typedef unsigned int tcflag_t;
 
-#define NCCS 17
-struct termios
-  {
-    tcflag_t c_iflag;		/* input mode flags */
-    tcflag_t c_oflag;		/* output mode flags */
-    tcflag_t c_cflag;		/* control mode flags */
-    tcflag_t c_lflag;		/* local mode flags */
-    cc_t c_line;		/* line discipline */
-    cc_t c_cc[NCCS];		/* control characters */
-  };
+#include <bits/termios-struct.h>
 
 /* c_cc characters */
 #define VINTR    0
diff --git a/sysdeps/unix/sysv/linux/sparc/kernel_termios.h b/sysdeps/unix/sysv/linux/sparc/kernel_termios.h
index 31c717ea9d..3a27382d36 100644
--- a/sysdeps/unix/sysv/linux/sparc/kernel_termios.h
+++ b/sysdeps/unix/sysv/linux/sparc/kernel_termios.h
@@ -34,4 +34,7 @@  struct __kernel_termios
     cc_t c_cc[__KERNEL_NCCS];	/* control characters */
   };
 
+#define _HAVE_C_ISPEED 0
+#define _HAVE_C_OSPEED 0
+
 #endif /* kernel_termios.h */
diff --git a/sysdeps/unix/sysv/linux/speed.c b/sysdeps/unix/sysv/linux/speed.c
index 7db9e998c3..23834c10b5 100644
--- a/sysdeps/unix/sysv/linux/speed.c
+++ b/sysdeps/unix/sysv/linux/speed.c
@@ -58,7 +58,7 @@  cfsetospeed (struct termios *termios_p, speed_t speed)
       && (speed < B57600 || speed > __MAX_BAUD))
     return INLINE_SYSCALL_ERROR_RETURN_VALUE (EINVAL);
 
-#ifdef _HAVE_STRUCT_TERMIOS_C_OSPEED
+#if _HAVE_STRUCT_TERMIOS_C_OSPEED
   termios_p->c_ospeed = speed;
 #endif
   termios_p->c_cflag &= ~(CBAUD | CBAUDEX);
@@ -80,7 +80,7 @@  cfsetispeed (struct termios *termios_p, speed_t speed)
       && (speed < B57600 || speed > __MAX_BAUD))
     return INLINE_SYSCALL_ERROR_RETURN_VALUE (EINVAL);
 
-#ifdef _HAVE_STRUCT_TERMIOS_C_ISPEED
+#if _HAVE_STRUCT_TERMIOS_C_ISPEED
   termios_p->c_ispeed = speed;
 #endif
   if (speed == 0)
diff --git a/sysdeps/unix/sysv/linux/tcgetattr.c b/sysdeps/unix/sysv/linux/tcgetattr.c
index 9748bc8cc4..b79d9f1462 100644
--- a/sysdeps/unix/sysv/linux/tcgetattr.c
+++ b/sysdeps/unix/sysv/linux/tcgetattr.c
@@ -44,15 +44,15 @@  __tcgetattr (int fd, struct termios *termios_p)
       termios_p->c_cflag = k_termios.c_cflag;
       termios_p->c_lflag = k_termios.c_lflag;
       termios_p->c_line = k_termios.c_line;
-#ifdef _HAVE_STRUCT_TERMIOS_C_ISPEED
-# ifdef _HAVE_C_ISPEED
+#if _HAVE_STRUCT_TERMIOS_C_ISPEED
+# if _HAVE_C_ISPEED
       termios_p->c_ispeed = k_termios.c_ispeed;
 # else
       termios_p->c_ispeed = k_termios.c_cflag & (CBAUD | CBAUDEX);
 # endif
 #endif
-#ifdef _HAVE_STRUCT_TERMIOS_C_OSPEED
-# ifdef _HAVE_C_OSPEED
+#if _HAVE_STRUCT_TERMIOS_C_OSPEED
+# if _HAVE_C_OSPEED
       termios_p->c_ospeed = k_termios.c_ospeed;
 # else
       termios_p->c_ospeed = k_termios.c_cflag & (CBAUD | CBAUDEX);
diff --git a/sysdeps/unix/sysv/linux/tcsetattr.c b/sysdeps/unix/sysv/linux/tcsetattr.c
index a916e70253..f8025a0473 100644
--- a/sysdeps/unix/sysv/linux/tcsetattr.c
+++ b/sysdeps/unix/sysv/linux/tcsetattr.c
@@ -66,10 +66,10 @@  __tcsetattr (int fd, int optional_actions, const struct termios *termios_p)
   k_termios.c_cflag = termios_p->c_cflag;
   k_termios.c_lflag = termios_p->c_lflag;
   k_termios.c_line = termios_p->c_line;
-#if defined _HAVE_C_ISPEED && defined _HAVE_STRUCT_TERMIOS_C_ISPEED
+#if _HAVE_C_ISPEED && _HAVE_STRUCT_TERMIOS_C_ISPEED
   k_termios.c_ispeed = termios_p->c_ispeed;
 #endif
-#if defined _HAVE_C_OSPEED && defined _HAVE_STRUCT_TERMIOS_C_OSPEED
+#if _HAVE_C_OSPEED && _HAVE_STRUCT_TERMIOS_C_OSPEED
   k_termios.c_ospeed = termios_p->c_ospeed;
 #endif
   memcpy (&k_termios.c_cc[0], &termios_p->c_cc[0],