[Midnightbsd-cvs] src [9422] trunk: Allow O_CLOEXEC in posix_openpt() flags.

[laffer1 at midnightbsd.org]

Revision: 9422
          http://svnweb.midnightbsd.org/src/?rev=9422
Author:   laffer1
Date:     2017-03-04 17:53:07 -0500 (Sat, 04 Mar 2017)
Log Message:
-----------
Allow O_CLOEXEC in posix_openpt() flags.

Modified Paths:
--------------
    trunk/lib/libc/sys/posix_openpt.2
    trunk/sys/kern/tty_pts.c

Modified: trunk/lib/libc/sys/posix_openpt.2
===================================================================
--- trunk/lib/libc/sys/posix_openpt.2	2017-03-04 22:52:29 UTC (rev 9421)
+++ trunk/lib/libc/sys/posix_openpt.2	2017-03-04 22:53:07 UTC (rev 9422)
@@ -37,7 +37,7 @@
 .\"
 .\" $MidnightBSD$
 .\"
-.Dd August 20, 2008
+.Dd March 21, 2013
 .Dt POSIX_OPENPT 2
 .Os
 .Sh NAME
@@ -71,7 +71,7 @@
 are constructed by a bitwise-inclusive OR of flags from the following
 list, defined in
 .In fcntl.h :
-.Bl -tag -width ".Dv O_NOCTTY"
+.Bl -tag -width ".Dv O_CLOEXEC"
 .It Dv O_RDWR
 Open for reading and writing.
 .It Dv O_NOCTTY
@@ -79,6 +79,8 @@
 .Fn posix_openpt
 shall not cause the terminal device to become the controlling terminal
 for the process.
+.It Dv O_CLOEXEC
+Set the close-on-exec flag for the new file descriptor.
 .El
 .Pp
 The
@@ -116,6 +118,9 @@
 .Fn posix_openpt
 function conforms to
 .St -p1003.1-2001 .
+The ability to use
+.Dv O_CLOEXEC
+is an extension to the standard.
 .Sh HISTORY
 The
 .Fn posix_openpt

Modified: trunk/sys/kern/tty_pts.c
===================================================================
--- trunk/sys/kern/tty_pts.c	2017-03-04 22:52:29 UTC (rev 9421)
+++ trunk/sys/kern/tty_pts.c	2017-03-04 22:53:07 UTC (rev 9422)
@@ -825,10 +825,10 @@
 	 * POSIX states it's unspecified when other flags are passed. We
 	 * don't allow this.
 	 */
-	if (uap->flags & ~(O_RDWR|O_NOCTTY))
+	if (uap->flags & ~(O_RDWR|O_NOCTTY|O_CLOEXEC))
 		return (EINVAL);
 
-	error = falloc(td, &fp, &fd, 0);
+	error = falloc(td, &fp, &fd, uap->flags);
 	if (error)
 		return (error);