3665 Implement O_CLOEXEC as an open() flag
Reviewed by: Robert Mustacchi <rm@joyent.com>
Reviewed by: Gordon Ross <gwr@nexenta.com>
Reviewed by: Dan McDonald <danmcd@nexenta.com>

@@ -1,9 +1,10 @@
 '\" te
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+.\" Portions Copyright (c) 2013, OmniTI Computer Consulting, Inc.  All Rights Reserved.
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@@ -209,10 +210,21 @@
 .RS 4n
 If the link count of the named file is greater than 1, \fBopen()\fR fails and
 sets \fBerrno\fR to \fBEMLINK\fR.
 .RE
 
+.sp
+.ne 2
+.na
+\fB\fBO_CLOEXEC\fR\fR
+.ad
+.sp .6
+.RS 4n
+If set, the filedescriptor returned will be closed prior to any future
+\fBexec()\fR calls.
+.RE
+
 .sp
 .ne 2
 .na
 \fB\fBO_NONBLOCK\fR or \fBO_NDELAY\fR\fR
 .ad