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>

*** 24,33 ****
--- 24,35 ----
   */
  
  /*      Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
  /*        All Rights Reserved   */
  
+ /* Copyright (c) 2013, OmniTI Computer Consulting, Inc. All rights reserved. */
+ 
  #ifndef _SYS_FILE_H
  #define _SYS_FILE_H
  
  #include <sys/t_lock.h>
  #ifdef _KERNEL
*** 111,120 ****
--- 113,124 ----
  /* f_flag2 (open-only) */
  
  #define FSEARCH         0x200000        /* O_SEARCH = 0x200000 */
  #define FEXEC           0x400000        /* O_EXEC = 0x400000 */
  
+ #define FCLOEXEC        0x800000 /* O_CLOEXEC = 0x800000 */
+ 
  #ifdef _KERNEL
  
  /*
   * Fake flags for driver ioctl calls to inform them of the originating
   * process' model.  See <sys/model.h>