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Date:      Wed, 24 May 2017 08:07:58 +0200
From:      Sebastian Huber <sebastian.huber@embedded-brains.de>
To:        freebsd-hackers@freebsd.org
Subject:   [PATCH] Use __BSD_VISIBLE for Termios headers
Message-ID:  <20170524060758.25529-1-sebastian.huber@embedded-brains.de>

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The Termios headers <termios.h> and <sys/_termios.h> used sometimes
_POSIX_SOURCE directly to determine if a thing should be exposed to the
user.

This circumvented the feature mechanisms of <sys/cdefs.h>.  Use
__BSD_VISIBLE instead.
---
 include/termios.h  |  8 ++++----
 sys/sys/_termios.h | 44 ++++++++++++++++++++++----------------------
 2 files changed, 26 insertions(+), 26 deletions(-)

diff --git a/include/termios.h b/include/termios.h
index ed8e328d7fd..333ab1cd6cc 100644
--- a/include/termios.h
+++ b/include/termios.h
@@ -42,12 +42,12 @@ typedef	__pid_t		pid_t;
 #define	_PID_T_DECLARED
 #endif
 
-#ifndef _POSIX_SOURCE
+#if __BSD_VISIBLE
 #define	OXTABS		TAB3
 #define	MDMBUF		CCAR_OFLOW
 #endif 
 
-#ifndef _POSIX_SOURCE
+#if __BSD_VISIBLE
 #define	CCEQ(val, c)	((c) == (val) && (val) != _POSIX_VDISABLE)
 #endif
 
@@ -57,7 +57,7 @@ typedef	__pid_t		pid_t;
 #define	TCSANOW		0		/* make change immediate */
 #define	TCSADRAIN	1		/* drain output, then change */
 #define	TCSAFLUSH	2		/* drain output, flush input */
-#ifndef _POSIX_SOURCE
+#if __BSD_VISIBLE
 #define	TCSASOFT	0x10		/* flag - don't alter h.w. state */
 #endif
 
@@ -95,7 +95,7 @@ __END_DECLS
 
 #endif /* !_TERMIOS_H_ */
 
-#ifndef _POSIX_SOURCE
+#if __BSD_VISIBLE
 #include <sys/ttycom.h>
 #include <sys/ttydefaults.h>
 #endif
diff --git a/sys/sys/_termios.h b/sys/sys/_termios.h
index de434bd5aa7..e6783cb8e50 100644
--- a/sys/sys/_termios.h
+++ b/sys/sys/_termios.h
@@ -42,15 +42,15 @@
  */
 #define	VEOF		0	/* ICANON */
 #define	VEOL		1	/* ICANON */
-#ifndef _POSIX_SOURCE
+#if __BSD_VISIBLE
 #define	VEOL2		2	/* ICANON together with IEXTEN */
 #endif
 #define	VERASE		3	/* ICANON */
-#ifndef _POSIX_SOURCE
+#if __BSD_VISIBLE
 #define	VWERASE 	4	/* ICANON together with IEXTEN */
 #endif
 #define	VKILL		5	/* ICANON */
-#ifndef _POSIX_SOURCE
+#if __BSD_VISIBLE
 #define	VREPRINT 	6	/* ICANON together with IEXTEN */
 #define	VERASE2 	7	/* ICANON */
 #endif
@@ -58,18 +58,18 @@
 #define	VINTR		8	/* ISIG */
 #define	VQUIT		9	/* ISIG */
 #define	VSUSP		10	/* ISIG */
-#ifndef _POSIX_SOURCE
+#if __BSD_VISIBLE
 #define	VDSUSP		11	/* ISIG together with IEXTEN */
 #endif
 #define	VSTART		12	/* IXON, IXOFF */
 #define	VSTOP		13	/* IXON, IXOFF */
-#ifndef _POSIX_SOURCE
+#if __BSD_VISIBLE
 #define	VLNEXT		14	/* IEXTEN */
 #define	VDISCARD	15	/* IEXTEN */
 #endif
 #define	VMIN		16	/* !ICANON */
 #define	VTIME		17	/* !ICANON */
-#ifndef _POSIX_SOURCE
+#if __BSD_VISIBLE
 #define	VSTATUS		18	/* ICANON together with IEXTEN */
 /*			19	   spare 2 */
 #endif
@@ -91,16 +91,16 @@
 #define	ICRNL		0x00000100	/* map CR to NL (ala CRMOD) */
 #define	IXON		0x00000200	/* enable output flow control */
 #define	IXOFF		0x00000400	/* enable input flow control */
-#ifndef _POSIX_SOURCE
+#if __BSD_VISIBLE
 #define	IXANY		0x00000800	/* any char will restart after stop */
 #define	IMAXBEL		0x00002000	/* ring bell on input queue full */
-#endif  /*_POSIX_SOURCE */
+#endif
 
 /*
  * Output flags - software output processing
  */
 #define	OPOST		0x00000001	/* enable following output processing */
-#ifndef _POSIX_SOURCE
+#if __BSD_VISIBLE
 #define	ONLCR		0x00000002	/* map NL to CR-NL (ala CRMOD) */
 #define	TABDLY		0x00000004	/* tab delay mask */
 #define	    TAB0	    0x00000000	    /* no tab delay and expansion */
@@ -109,12 +109,12 @@
 #define	OCRNL		0x00000010	/* map CR to NL on output */
 #define	ONOCR		0x00000020	/* no CR output at column 0 */
 #define	ONLRET		0x00000040	/* NL performs CR function */
-#endif  /*_POSIX_SOURCE */
+#endif
 
 /*
  * Control flags - hardware control of terminal
  */
-#ifndef _POSIX_SOURCE
+#if __BSD_VISIBLE
 #define	CIGNORE		0x00000001	/* ignore control flags */
 #endif
 #define	CSIZE		0x00000300	/* character size mask */
@@ -128,7 +128,7 @@
 #define	PARODD		0x00002000	/* odd parity, else even */
 #define	HUPCL		0x00004000	/* hang up on last close */
 #define	CLOCAL		0x00008000	/* ignore modem status lines */
-#ifndef _POSIX_SOURCE
+#if __BSD_VISIBLE
 #define	CCTS_OFLOW	0x00010000	/* CTS flow control of output */
 #define	CRTSCTS		(CCTS_OFLOW | CRTS_IFLOW)
 #define	CRTS_IFLOW	0x00020000	/* RTS flow control of input */
@@ -146,30 +146,30 @@
  * input flag.
  */
 
-#ifndef _POSIX_SOURCE
+#if __BSD_VISIBLE
 #define	ECHOKE		0x00000001	/* visual erase for line kill */
-#endif  /*_POSIX_SOURCE */
+#endif
 #define	ECHOE		0x00000002	/* visually erase chars */
 #define	ECHOK		0x00000004	/* echo NL after line kill */
 #define	ECHO		0x00000008	/* enable echoing */
 #define	ECHONL		0x00000010	/* echo NL even if ECHO is off */
-#ifndef _POSIX_SOURCE
+#if __BSD_VISIBLE
 #define	ECHOPRT		0x00000020	/* visual erase mode for hardcopy */
 #define	ECHOCTL  	0x00000040	/* echo control chars as ^(Char) */
-#endif  /*_POSIX_SOURCE */
+#endif
 #define	ISIG		0x00000080	/* enable signals INTR, QUIT, [D]SUSP */
 #define	ICANON		0x00000100	/* canonicalize input lines */
-#ifndef _POSIX_SOURCE
+#if __BSD_VISIBLE
 #define	ALTWERASE	0x00000200	/* use alternate WERASE algorithm */
-#endif  /*_POSIX_SOURCE */
+#endif
 #define	IEXTEN		0x00000400	/* enable DISCARD and LNEXT */
 #define	EXTPROC         0x00000800      /* external processing */
 #define	TOSTOP		0x00400000	/* stop background jobs from output */
-#ifndef _POSIX_SOURCE
+#if __BSD_VISIBLE
 #define	FLUSHO		0x00800000	/* output being flushed (state) */
 #define	NOKERNINFO	0x02000000	/* no kernel output from VSTATUS */
 #define	PENDIN		0x20000000	/* XXX retype pending input (state) */
-#endif  /*_POSIX_SOURCE */
+#endif
 #define	NOFLSH		0x80000000	/* don't flush after interrupt */
 
 /*
@@ -191,7 +191,7 @@
 #define	B9600	9600
 #define	B19200	19200
 #define	B38400	38400
-#ifndef _POSIX_SOURCE
+#if __BSD_VISIBLE
 #define	B7200	7200
 #define	B14400	14400
 #define	B28800	28800
@@ -203,7 +203,7 @@
 #define	B921600	921600
 #define	EXTA	19200
 #define	EXTB	38400
-#endif  /* !_POSIX_SOURCE */
+#endif
 
 typedef unsigned int	tcflag_t;
 typedef unsigned char	cc_t;
-- 
2.12.0




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