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>

*** 22,31 ****
--- 22,32 ----
  /*
   * Copyright (c) 1989, 2010, Oracle and/or its affiliates. All rights reserved.
   * Copyright (c) 2012 by Delphix. All rights reserved.
   * Copyright 2011 Nexenta Systems, Inc. All rights reserved.
   * Copyright (c) 2012, Joyent, Inc. All rights reserved.
+  * Copyright (c) 2013, OmniTI Computer Consulting, Inc. All rights reserved.
   */
  
  /*      Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
  /*        All Rights Reserved   */
  
*** 1916,1926 ****
  }
  
  #define ALL_O_FLAGS \
          (O_NDELAY|O_APPEND|O_SYNC|O_DSYNC|O_NONBLOCK|O_CREAT|O_TRUNC\
          |O_EXCL|O_NOCTTY|O_LARGEFILE|O_RSYNC|O_XATTR|O_NOFOLLOW|O_NOLINKS\
!         |FXATTRDIROPEN)
  
  const char *
  openarg(private_t *pri, int arg)
  {
          char *str = pri->code_buf;
--- 1917,1927 ----
  }
  
  #define ALL_O_FLAGS \
          (O_NDELAY|O_APPEND|O_SYNC|O_DSYNC|O_NONBLOCK|O_CREAT|O_TRUNC\
          |O_EXCL|O_NOCTTY|O_LARGEFILE|O_RSYNC|O_XATTR|O_NOFOLLOW|O_NOLINKS\
!         |O_CLOEXEC|FXATTRDIROPEN)
  
  const char *
  openarg(private_t *pri, int arg)
  {
          char *str = pri->code_buf;
*** 1974,1983 ****
--- 1975,1986 ----
                  (void) strlcat(str, "|O_XATTR", sizeof (pri->code_buf));
          if (arg & O_NOFOLLOW)
                  (void) strlcat(str, "|O_NOFOLLOW", sizeof (pri->code_buf));
          if (arg & O_NOLINKS)
                  (void) strlcat(str, "|O_NOLINKS", sizeof (pri->code_buf));
+         if (arg & O_CLOEXEC)
+                 (void) strlcat(str, "|O_CLOEXEC", sizeof (pri->code_buf));
          if (arg & FXATTRDIROPEN)
                  (void) strlcat(str, "|FXATTRDIROPEN", sizeof (pri->code_buf));
  
          return ((const char *)str);
  }