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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*** 209,218 ****
--- 210,230 ----
  .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