[illumos-gate merge]

commit 5dbfd19ad5fcc2b779f40f80fa05c1bd28fd0b4e
    3713 Implement accept4()
    3714 Implement pipe2()
    3715 Implement dup3()
    3716 Implement mkostemp() and mkostemps()
    3719 so_socketpair syscall should preserve FD_CLOEXEC flag
commit 6136c589445a3ea081bd34ab72db1060875b6bcc
    3722 link-editor is over restrictive of R_AMD64_32 addends

	Conflicts:

	usr/src/lib/libc/sparcv9/Makefile.com [copyright]
	usr/src/lib/libc/sparc/Makefile.com [copyright]
	usr/src/lib/libc/i386/Makefile.com [copyright]

8 files changed, 221 insertions, 20 deletions

diff --git a/usr/src/man/man2/Makefile b/usr/src/man/man2/Makefile
index 449177c4df..8e93920613 100644
--- a/usr/src/man/man2/Makefile
+++ b/usr/src/man/man2/Makefile
@@ -10,6 +10,7 @@
 #
 
 # Copyright 2011, Richard Lowe
+# Copyright 2013, OmniTI Computer Consulting, Inc
 
 include ../../Makefile.master
 
@@ -207,6 +208,7 @@ MANSOFILES =	_Exit.2				\
 	 	lstat.2				\
 	 	openat.2			\
 	 	pathconf.2			\
+	 	pipe2.2			\
 	 	pread.2				\
 	 	pset_assign.2			\
 	 	pset_destroy.2			\
@@ -328,6 +330,8 @@ setustack.2			:= SOSRC = man2/getustack.2
 
 openat.2			:= SOSRC = man2/open.2
 
+pipe2.2				:= SOSRC = man2/pipe.2
+
 pset_assign.2			:= SOSRC = man2/pset_create.2
 pset_destroy.2			:= SOSRC = man2/pset_create.2
 
diff --git a/usr/src/man/man2/fcntl.2 b/usr/src/man/man2/fcntl.2
index 637a62ebf1..c7d769f874 100644
--- a/usr/src/man/man2/fcntl.2
+++ b/usr/src/man/man2/fcntl.2
@@ -1,4 +1,5 @@
 '\" te
+.\" Copyright (c) 2013, OmniTI Computer Consulting, Inc. All rights reserved.
 .\" Copyright (c) 2007, Sun Microsystems, Inc.  All Rights Reserved.
 .\" Copyright 1989 AT&T
 .\" Portions Copyright (c) 1992, X/Open Company Limited.  All Rights Reserved.
@@ -9,7 +10,7 @@
 .\" The contents of this file are subject to the terms of the Common Development and Distribution License (the "License").  You may not use this file except in compliance with the License.
 .\" You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE or http://www.opensolaris.org/os/licensing.  See the License for the specific language governing permissions and limitations under the License.
 .\" When distributing Covered Code, include this CDDL HEADER in each file and include the License file at usr/src/OPENSOLARIS.LICENSE.  If applicable, add the following below this CDDL HEADER, with the fields enclosed by brackets "[]" replaced with your own identifying information: Portions Copyright [yyyy] [name of copyright owner]
-.TH FCNTL 2 "Jan 17, 2007"
+.TH FCNTL 2 "Apr 19, 2013"
 .SH NAME
 fcntl \- file control
 .SH SYNOPSIS
@@ -64,6 +65,27 @@ equivalent to \fBdup2\fR(\fIfildes\fR, \fIarg\fR).
 .sp
 .ne 2
 .na
+\fB\fBF_DUPFD_CLOEXEC\fR\fR
+.ad
+.RS 15n
+Similar to \fBF_DUPFD\fR except that instead of clearing \fBFD_CLOEXEC\fR
+it is explicitly set on the returned file descriptor.
+.RE
+
+.sp
+.ne 2
+.na
+\fB\fBF_DUP2FD_CLOEXEC\fR\fR
+.ad
+.RS 15n
+Similar to \fBF_DUP2FD\fR with two exceptions. The \fBFD_CLOEXEC\fR flag is
+explicitly set on the returned file descriptor.  If \fIfiledes\fR equals
+\fIarg\fR, the call will fail setting \fBerrno\fR to \fBEINVAL\fR.
+.RE
+
+.sp
+.ne 2
+.na
 \fB\fBF_FREESP\fR\fR
 .ad
 .RS 15n
@@ -762,6 +784,9 @@ or equal to \fBOPEN_MAX\fR; or the \fIcmd\fR argument is \fBF_GETLK\fR,
 .sp
 The \fIcmd\fR argument is \fBF_UNSHARE\fR and a reservation with this
 \fBf_id\fR for this process does not exist.
+.sp
+The \fIcmd\fR argument is \fBF_DUP2FD_CLOEXEC\fR and \fIfildes\fR is equal
+to \fBarg\fR.
 .RE
 
 .sp
diff --git a/usr/src/man/man2/pipe.2 b/usr/src/man/man2/pipe.2
index c2e8d94e24..88b625bf52 100644
--- a/usr/src/man/man2/pipe.2
+++ b/usr/src/man/man2/pipe.2
@@ -2,6 +2,7 @@
 .\" Copyright (c) 2002, Sun Microsystems, Inc.  All Rights Reserved.
 .\" Copyright 1989 AT&T
 .\" Portions Copyright (c) 2001, the Institute of Electrical and Electronics Engineers, Inc. and The Open Group. All Rights Reserved.
+.\" Portions Copyright (c) 2013, OmniTI Computer Consulting, Inc. All Rights Reserved
 .\" Sun Microsystems, Inc. gratefully acknowledges The Open Group for permission to reproduce portions of its copyrighted documentation. Original documentation from The Open Group can be obtained online at
 .\" http://www.opengroup.org/bookstore/.
 .\" The Institute of Electrical and Electronics Engineers and The Open Group, have given us permission to reprint portions of their documentation. In the following statement, the phrase "this text" refers to portions of the system documentation. Portions of this text are reprinted and reproduced in electronic form in the Sun OS Reference Manual, from IEEE Std 1003.1, 2004 Edition, Standard for Information Technology -- Portable Operating System Interface (POSIX), The Open Group Base Specifications Issue 6, Copyright (C) 2001-2004 by the Institute of Electrical and Electronics Engineers, Inc and The Open Group. In the event of any discrepancy between these versions and the original IEEE and The Open Group Standard, the original IEEE and The Open Group Standard is the referee document. The original Standard can be obtained online at http://www.opengroup.org/unix/online.html.
@@ -9,7 +10,7 @@
 .\" The contents of this file are subject to the terms of the Common Development and Distribution License (the "License").  You may not use this file except in compliance with the License.
 .\" You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE or http://www.opensolaris.org/os/licensing.  See the License for the specific language governing permissions and limitations under the License.
 .\" When distributing Covered Code, include this CDDL HEADER in each file and include the License file at usr/src/OPENSOLARIS.LICENSE.  If applicable, add the following below this CDDL HEADER, with the fields enclosed by brackets "[]" replaced with your own identifying information: Portions Copyright [yyyy] [name of copyright owner]
-.TH PIPE 2 "Apr 23, 2002"
+.TH PIPE 2 "Apr 19, 2013"
 .SH NAME
 pipe \- create an interprocess channel
 .SH SYNOPSIS
@@ -18,17 +19,50 @@ pipe \- create an interprocess channel
 #include <unistd.h>
 
 \fBint\fR \fBpipe\fR(\fBint\fR \fIfildes\fR[2]);
+
+\fBint\fR \fBpipe2\fR(\fBint\fR \fIfildes\fR[2], \fBint\fR \fIflags\fR);
 .fi
 
 .SH DESCRIPTION
 .sp
 .LP
-The \fBpipe()\fR function creates an I/O mechanism called a pipe and returns
-two file descriptors, \fIfildes\fR[\fB0\fR] and \fIfildes\fR[\fB1\fR]. The
-files associated with \fIfildes\fR[\fB0\fR] and \fIfildes\fR[\fB1\fR] are
-streams and are both opened for reading and writing.  The \fBO_NDELAY\fR,
-\fBO_NONBLOCK\fR, and \fBFD_CLOEXEC\fR flags are cleared on both file
-descriptors. The \fBfcntl\fR(2) function can be used to set these flags.
+The \fBpipe()\fR and pipe2() functions create an I/O mechanism called a
+pipe and returns two file descriptors, \fIfildes\fR[\fB0\fR] and
+\fIfildes\fR[\fB1\fR]. The files associated with \fIfildes\fR[\fB0\fR]
+and \fIfildes\fR[\fB1\fR] are streams and are both opened for reading and
+writing.  The \fBpipe()\fR call will clear the \fBO_NDELAY\fR,
+\fBO_NONBLOCK\fR, and \fBFD_CLOEXEC\fR flags on both file descriptors. The
+\fBfcntl\fR(2) function can be used to set these flags.
+.sp
+.LP
+The \fBpipe2()\fR call will clear the \fBO_NDELAY\fR on both filedescriptors.
+The \fIflags\fR argument may be used to specify attributes on both file
+descriptors.  \fBpipe2()\fR called with a \fIflags\fR value of 0 will
+behave identically to \fBpipe()\fR.  Values for \fIflags\fR are constructed
+by a bitwise-inclusive-OR of flags from the following list, defined in
+<\fBfcntl.h\fR>.
+.RE
+
+.sp
+.ne 2
+.na
+\fB\fBO_NONBLOCK\fR\fR
+.ad
+.RS 12n
+Both file descriptors will be placed in non-blocking mode. This corresponds
+to the \fBO_NONBLOCK\fR flag to \fBfcntl\fR(2).
+.RE
+
+.sp
+.ne 2
+.na
+\fB\fBO_CLOEXEC\fR\fR
+.ad
+.RS 12n
+Both file descriptors will be opened with the FD_CLOEXEC flag set. Both file
+descriptors will be closed prior to any future exec() calls.
+.RE
+
 .sp
 .LP
 A read from \fIfildes\fR[\fB0\fR] accesses the data written to
@@ -47,7 +81,7 @@ returned and \fBerrno\fR is set to indicate the error.
 .SH ERRORS
 .sp
 .LP
-The \fBpipe()\fR function will fail if:
+The \fBpipe()\fR and \fBpipe2()\fR functions will fail if:
 .sp
 .ne 2
 .na
@@ -67,6 +101,29 @@ The number of simultaneously open files in the system would exceed a
 system-imposed limit.
 .RE
 
+.sp
+.ne 2
+.na
+\fB\fBEFAULT\fR\fR
+.ad
+.RS 10n
+The \fIfildes[2]\fR argument points to an illegal address.
+.RE
+
+.sp
+.LP
+The \fBpipe2()\fR function will also fail if:
+.sp
+.ne 2
+.na
+\fB\fBEINVAL\fR\fR
+.ad
+.RS 10n
+The \fIflags\fR argument is illegal. Valid \fIflags\fR are zero or a
+bitwise inclusive-OR of \fBO_CLOEXEC\fR and \fBO_NONBLOCK\fR.
+.RE
+
+
 .SH ATTRIBUTES
 .sp
 .LP
@@ -89,8 +146,8 @@ MT-Level	Async-Signal-Safe
 .sp
 .LP
 \fBsh\fR(1), \fBfcntl\fR(2), \fBfstat\fR(2), \fBgetmsg\fR(2), \fBpoll\fR(2),
-\fBputmsg\fR(2), \fBread\fR(2), \fBwrite\fR(2), \fBattributes\fR(5),
-\fBstandards\fR(5), \fBstreamio\fR(7I)
+\fBputmsg\fR(2), \fBread\fR(2), \fBwrite\fR(2), \fBopen\fR(2),
+\fBattributes\fR(5), \fBstandards\fR(5), \fBstreamio\fR(7I)
 .SH NOTES
 .sp
 .LP
diff --git a/usr/src/man/man3c/Makefile b/usr/src/man/man3c/Makefile
index ed669e9a40..ae5b8542bd 100644
--- a/usr/src/man/man3c/Makefile
+++ b/usr/src/man/man3c/Makefile
@@ -10,6 +10,7 @@
 #
 
 # Copyright 2011, Richard Lowe
+# Copyright 2013, OmniTI Computer Consulting, Inc. All rights reserved.
 
 include ../../Makefile.master
 
@@ -671,6 +672,7 @@ MANSOFILES =	FD_CLR.3c				\
 	 	csetno.3c				\
 	 	ctermid_r.3c				\
 	 	ctime_r.3c				\
+		dup3.3c					\
 	 	dbm_clearerr.3c				\
 	 	dbm_close.3c				\
 	 	dbm_delete.3c				\
@@ -848,6 +850,8 @@ MANSOFILES =	FD_CLR.3c				\
 	 	memset.3c				\
 	 	minor.3c				\
 	 	mkdtemp.3c				\
+	 	mkostemp.3c				\
+	 	mkostemps.3c				\
 	 	mkstemps.3c				\
 	 	mq_reltimedreceive_np.3c		\
 	 	mq_reltimedsend_np.3c			\
@@ -1651,6 +1655,8 @@ memset.3c				:= SOSRC = man3c/memory.3c
 
 mkdtemp.3c				:= SOSRC = man3c/mkstemp.3c
 mkstemps.3c				:= SOSRC = man3c/mkstemp.3c
+mkostemp.3c				:= SOSRC = man3c/mkstemp.3c
+mkostemps.3c				:= SOSRC = man3c/mkstemp.3c
 
 munlock.3c				:= SOSRC = man3c/mlock.3c
 
@@ -1678,6 +1684,8 @@ dbm_nextkey.3c				:= SOSRC = man3c/ndbm.3c
 dbm_open.3c				:= SOSRC = man3c/ndbm.3c
 dbm_store.3c				:= SOSRC = man3c/ndbm.3c
 
+dup3.3c					:= SOSRC = man3c/dup2.3c
+
 fdopendir.3c				:= SOSRC = man3c/opendir.3c
 
 errno.3c				:= SOSRC = man3c/perror.3c
diff --git a/usr/src/man/man3c/dup2.3c b/usr/src/man/man3c/dup2.3c
index eb19b74ff5..a2742a732f 100644
--- a/usr/src/man/man3c/dup2.3c
+++ b/usr/src/man/man3c/dup2.3c
@@ -1,12 +1,13 @@
 '\" te
+.\" Copyright (c) 2013, OmniTI Computer Consulting, Inc. All rights reserved.
 .\" Copyright (c) 2003, Sun Microsystems, Inc. All Rights Reserved.
 .\" Copyright 1989 AT&T
 .\" The contents of this file are subject to the terms of the Common Development and Distribution License (the "License").  You may not use this file except in compliance with the License.
 .\" You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE or http://www.opensolaris.org/os/licensing.  See the License for the specific language governing permissions and limitations under the License.
 .\" When distributing Covered Code, include this CDDL HEADER in each file and include the License file at usr/src/OPENSOLARIS.LICENSE.  If applicable, add the following below this CDDL HEADER, with the fields enclosed by brackets "[]" replaced with your own identifying information: Portions Copyright [yyyy] [name of copyright owner]
-.TH DUP2 3C "Dec 19, 2003"
+.TH DUP2 3C "Apr 19, 2013"
 .SH NAME
-dup2 \- duplicate an open file descriptor
+dup2, dup3 \- duplicate an open file descriptor
 .SH SYNOPSIS
 .LP
 .nf
@@ -15,6 +16,11 @@ dup2 \- duplicate an open file descriptor
 \fBint\fR \fBdup2\fR(\fBint\fR \fIfildes\fR, \fBint\fR \fIfildes2\fR);
 .fi
 
+.LP
+.nf
+\fBint\fR \fBdup3\fR(\fBint\fR \fIfildes\fR, \fBint\fR \fIfildes2\fR, \dBint\fR \fIflags\fR);
+.fi
+
 .SH DESCRIPTION
 .sp
 .LP
@@ -30,6 +36,14 @@ to \fIfildes\fR, or if \fIfildes\fR is not a valid open file descriptor,
 .LP
 The \fBdup2()\fR function is equivalent to  \fBfcntl\fR(\fIfildes\fR,
 \fBF_DUP2FD\fR, \fIfildes2\fR).
+.sp
+.LP
+Ths \fBdup3()\fR function works similarly to the \fBdup2()\fR function with
+two exceptions.  If \fIfildes\fR and \fIfildes2\fR point to the same file
+descriptor, -1 is returned and errno set to \fBEINVAL\fR.  If \fIflags\fR
+is \fBO_CLOEXEC\fR, then \fIfiledes2\fB will have the \fBFD_CLOEXEC\fR flag
+set causing the file descriptor to be closed during any future call of
+\fBexec\fR(2).
 .SH RETURN VALUES
 .sp
 .LP
@@ -39,7 +53,7 @@ set to indicate the error.
 .SH ERRORS
 .sp
 .LP
-The \fBdup2()\fR function will fail if:
+The \fBdup2()\fR and \fBdup3()\fR functions will fail if:
 .sp
 .ne 2
 .na
@@ -77,6 +91,18 @@ A signal was caught during the \fBdup2()\fR call.
 The process has too many open files.  See  \fBfcntl\fR(2).
 .RE
 
+.sp
+.LP
+Additionally, the \fBdup3()\fR function will fail if:
+.sp
+.ne 2
+.na
+\fB\fBEINVAL\fR\fR
+.ad
+.RS 10n
+\fIflags\fR has a value other than 0 or \fBO_CLOEXEC\fR or \fIfildes\fR and \fIfildes2\fB point to the same file descriptor.
+.RE
+
 .SH ATTRIBUTES
 .sp
 .LP
diff --git a/usr/src/man/man3c/mkstemp.3c b/usr/src/man/man3c/mkstemp.3c
index 697cba2a2e..4d7f4c572e 100644
--- a/usr/src/man/man3c/mkstemp.3c
+++ b/usr/src/man/man3c/mkstemp.3c
@@ -1,4 +1,5 @@
 '\" te
+.\" Copyright (c) 2013, OmniTI Computer Consulting, Inc. All rights reserved.
 .\" Copyright (c) 1992, X/Open Company Limited. All Rights Reserved.  Portions Copyright (c) 2006, Sun Microsystems, Inc.  All Rights Reserved.
 .\" Sun Microsystems, Inc. gratefully acknowledges The Open Group for permission to reproduce portions of its copyrighted documentation. Original documentation from The Open Group can be obtained online at
 .\" http://www.opengroup.org/bookstore/.
@@ -7,9 +8,9 @@
 .\" The contents of this file are subject to the terms of the Common Development and Distribution License (the "License").  You may not use this file except in compliance with the License.
 .\" You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE or http://www.opensolaris.org/os/licensing.  See the License for the specific language governing permissions and limitations under the License.
 .\" When distributing Covered Code, include this CDDL HEADER in each file and include the License file at usr/src/OPENSOLARIS.LICENSE.  If applicable, add the following below this CDDL HEADER, with the fields enclosed by brackets "[]" replaced with your own identifying information: Portions Copyright [yyyy] [name of copyright owner]
-.TH MKSTEMP 3C "Feb 22, 2006"
+.TH MKSTEMP 3C "Apr 19, 2013"
 .SH NAME
-mkstemp, mkstemps, mkdtemp \- make a unique file name from a template and open
+mkstemp, mkstemps, mkostemp, mkostemps, mkdtemp \- make a unique file name from a template and open
 the file
 .SH SYNOPSIS
 .LP
@@ -21,11 +22,21 @@ the file
 
 .LP
 .nf
+\fBint\fR \fBmkostemp\fR(\fBchar *\fR\fItemplate\fR, \fBint\fR \fIflags\fR);
+.fi
+
+.LP
+.nf
 \fBint\fR \fBmkstemps\fR(\fBchar *\fR\fItemplate\fR, \fBint\fR \fIslen\fR);
 .fi
 
 .LP
 .nf
+\fBint\fR \fBmkostemps\fR(\fBchar *\fR\fItemplate\fR, \fBint\fR \fIslen\fR, \fBint\fR \fIflags\fR);
+.fi
+
+.LP
+.nf
 \fBchar *\fR\fBmkdtemp\fR(\fBchar *\fR\fItemplate\fR);
 .fi
 
@@ -48,6 +59,12 @@ permits a suffix to exist in the template. The template should be of the form
 specifies the length of the suffix string.
 .sp
 .LP
+The \fBmkostemp()\fR and \fBmkostemps\fR are like their \fBmkstemp()\fR and
+\fBmkstemps()\fR couterparts except that the \fIflags\fR argument is present
+and used to supplement (as a bitwise inclusive-OR) flags to internal
+\fBopen()\fR calls.  (e.g. \fBO_SYNC\fR, \fBO_APPEND\fR, and \fBO_CLOEXEC\fR).
+.sp
+.LP
 The \fBmkdtemp()\fR function makes the same replacement to the template as in
 \fBmktemp\fR(3C) and creates the template directory using \fBmkdir\fR(2),
 passing a \fImode\fR argument of 0700.
diff --git a/usr/src/man/man3socket/Makefile b/usr/src/man/man3socket/Makefile
index 3ac8e626cf..77d818b6cc 100644
--- a/usr/src/man/man3socket/Makefile
+++ b/usr/src/man/man3socket/Makefile
@@ -10,6 +10,7 @@
 #
 
 # Copyright 2011, Richard Lowe
+# Copyright 2013, OmniTI Computer Consulting, Inc.
 
 include ../../Makefile.master
 
@@ -53,7 +54,8 @@ MANFILES = 	accept.3socket		\
 		socketpair.3socket	\
 		spray.3socket
 
-MANSOFILES =	endnetent.3socket		\
+MANSOFILES =	accept4.3socket			\
+		endnetent.3socket		\
 		endprotoent.3socket		\
 		endservent.3socket		\
 		ether_aton.3socket		\
@@ -135,6 +137,8 @@ MANSOFILES =	endnetent.3socket		\
 
 MANFILES +=	$(MANSOFILES)
 
+accept4.3socket			:= SOSRC = man3socket/accept.3socket
+
 htonl.3socket			:= SOSRC = man3socket/byteorder.3socket
 htonll.3socket			:= SOSRC = man3socket/byteorder.3socket
 htons.3socket			:= SOSRC = man3socket/byteorder.3socket
diff --git a/usr/src/man/man3socket/accept.3socket b/usr/src/man/man3socket/accept.3socket
index e9ff5df69c..c6afea7625 100644
--- a/usr/src/man/man3socket/accept.3socket
+++ b/usr/src/man/man3socket/accept.3socket
@@ -1,10 +1,11 @@
 '\" te
 .\" Copyright 1989 AT&T
 .\" Copyright (C) 2002, Sun Microsystems, Inc. All Rights Reserved
+.\" Copyright (c) 2013, OmniTI Computer Consulting, Inc. All rights reserved.
 .\" The contents of this file are subject to the terms of the Common Development and Distribution License (the "License").  You may not use this file except in compliance with the License.
 .\" You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE or http://www.opensolaris.org/os/licensing.  See the License for the specific language governing permissions and limitations under the License.
 .\" When distributing Covered Code, include this CDDL HEADER in each file and include the License file at usr/src/OPENSOLARIS.LICENSE.  If applicable, add the following below this CDDL HEADER, with the fields enclosed by brackets "[]" replaced with your own identifying information: Portions Copyright [yyyy] [name of copyright owner]
-.TH ACCEPT 3SOCKET "Jan 24, 2002"
+.TH ACCEPT 3SOCKET "Apr 19, 2013"
 .SH NAME
 accept \- accept a connection on a socket
 .SH SYNOPSIS
@@ -15,6 +16,9 @@ accept \- accept a connection on a socket
 #include <sys/socket.h>
 
 \fBint\fR \fBaccept\fR(\fBint\fR \fIs\fR, \fBstruct sockaddr *\fR\fIaddr\fR, \fBsocklen_t *\fR\fIaddrlen\fR);
+
+\fBint\fR \fBaccept4\fR(\fBint\fR \fIs\fR, \fBstruct sockaddr *\fR\fIaddr\fR, \fBsocklen_t *\fR\fIaddrlen\fR,
+    \fBint\fR \fIflags\fR);
 .fi
 
 .SH DESCRIPTION
@@ -53,6 +57,47 @@ The \fBaccept()\fR function is used with connection-based socket types,
 currently with \fBSOCK_STREAM\fR.
 .sp
 .LP
+The \fBaccept4()\fR function allows flags that control the behavior of a
+successfully accepted socket.  If \fIflags\fR is 0, \fBaccept4()\fR acts
+identically to \fBaccept()\fR. Values for \fIflags\fR are constructed by
+a bitwise-inclusive-OR of flags from the following list, defined in
+<sys/socketvar.h>.
+.sp
+.ne 2
+.na
+\fB\fBSOCK_CLOEXEC\fR\fR
+.ad
+.RS 12n
+The accepted socket will have the FD_CLOEXEC flag set as if \fBfcntl()\fR
+was called on it.  This flag is set before the socket is passed to the
+caller thus avoiding the race condition between \fBaccept()\fR and
+\fBfcntl()\fR.  See, \fBO_CLOEXEC\fR in \fBopen(2)\fR for more details.
+.RE
+
+.sp
+.ne 2
+.na
+\fB\fBSOCK_NDELAY\fR\fR
+.ad
+.RS 12n
+The accepted socket will have the \fBO_NDELAY\fR flag set as if \fBfcntl()\fR
+was called on it.  This sets the socket into non-blocking mode.  See
+\fBO_NDELAY\fR in \fBfcntl.h(3HEAD)\fR for more details.
+.RE
+
+.sp
+.ne 2
+.na
+\fB\fBSOCK_NONBLOCK\fR\fR
+.ad
+.RS 12n
+The accepted socket will have the \fBO_NONBLOCK\fR flag set as if
+\fBfcntl()\fR was called on it.  This sets the socket into non-blocking mode
+(POSIX; see \fBstandards(5)\fR).  See \fBO_NONBLOCK\fR in \fBfcntl.h(3HEAD)\fR
+for more details.
+.RE
+.sp
+.LP
 It is possible to \fBselect\fR(3C) or \fBpoll\fR(2) a socket for the purpose of
 an \fBaccept()\fR by selecting or polling it for a read. However, this will
 only indicate when a connect indication is pending; it is still necessary to
@@ -65,7 +110,7 @@ returns a non-negative integer that is a descriptor for the accepted socket.
 .SH ERRORS
 .sp
 .LP
-\fBaccept()\fR will fail if:
+\fBaccept()\fR and \fBaccept4()\fR will fail if:
 .sp
 .ne 2
 .na
@@ -179,6 +224,20 @@ The socket is marked as non-blocking and no connections are present to be
 accepted.
 .RE
 
+.sp
+.LP
+\fBAdditionally, \fBaccept4()\fR will fail if:
+.sp
+.ne 2
+.na
+\fB\fBEINVAL\fR\fR
+.ad
+.RS 16n
+The \fIflags\fR value is invalid. The \fIflags\fR argument can only be the
+bitwise inclusive-OR of \fBSOCK_CLOEXEC\fR, \fBSOCK_NONBLOCK\fR, and
+\fBSOCK_NDELAY\fR.
+.RE
+
 .SH ATTRIBUTES
 .sp
 .LP
@@ -200,4 +259,5 @@ MT-Level	Safe
 .LP
 \fBpoll\fR(2), \fBbind\fR(3SOCKET), \fBconnect\fR(3SOCKET),
 \fBlisten\fR(3SOCKET), \fBselect\fR(3C), \fBsocket.h\fR(3HEAD),
-\fBsocket\fR(3SOCKET), \fBnetconfig\fR(4), \fBattributes\fR(5)
+\fBsocket\fR(3SOCKET), \fBnetconfig\fR(4), \fBattributes\fR(5),
+\fBfcntl.h(3HEAD)\fR, \fBfcntl(2)\fR, \fBstandards(5)\fR