uts: Allow for address space randomisation.
Randomise the base addresses of shared objects, non-fixed mappings, the
stack and the heap.  Introduce a service, svc:/system/process-security,
and a tool psecflags(1) to control and observe it

*** 134,143 ****
--- 134,144 ----
  static void     aus_ioctl(struct t_audit_data *);
  static void     aus_memcntl(struct t_audit_data *);
  static void     aus_mmap(struct t_audit_data *);
  static void     aus_munmap(struct t_audit_data *);
  static void     aus_priocntlsys(struct t_audit_data *);
+ static void     aus_psecflags(struct t_audit_data *);
  static void     aus_setegid(struct t_audit_data *);
  static void     aus_setgroups(struct t_audit_data *);
  static void     aus_seteuid(struct t_audit_data *);
  static void     aus_putmsg(struct t_audit_data *);
  static void     aus_putpmsg(struct t_audit_data *);
*** 202,212 ****
   */
  aui_null,       AUE_NULL,       aus_null,       /* 0 unused (indirect) */
                  auf_null,       0,
  aui_null,       AUE_EXIT,       aus_exit,       /* 1 exit */
                  auf_null,       S2E_NPT,
! aui_null,       AUE_NULL,       aus_null,       /* 2 (loadable) was forkall */
                  auf_null,       0,
  aui_null,       AUE_READ,       aus_null,       /* 3 read */
                  auf_read,       S2E_PUB,
  aui_null,       AUE_WRITE,      aus_null,       /* 4 write */
                  auf_write,      0,
--- 203,213 ----
   */
  aui_null,       AUE_NULL,       aus_null,       /* 0 unused (indirect) */
                  auf_null,       0,
  aui_null,       AUE_EXIT,       aus_exit,       /* 1 exit */
                  auf_null,       S2E_NPT,
! aui_null,       AUE_PSECFLAGS,  aus_psecflags,  /* 2 psecflags */
                  auf_null,       0,
  aui_null,       AUE_READ,       aus_null,       /* 3 read */
                  auf_read,       S2E_PUB,
  aui_null,       AUE_WRITE,      aus_null,       /* 4 write */
                  auf_write,      0,
*** 741,750 ****
--- 742,765 ----
  
          rval = (uint32_t)uap->rval;
          au_uwrite(au_to_arg32(1, "exit status", rval));
  }
  
+ /*ARGSUSED*/
+ static void
+ aus_psecflags(struct t_audit_data *tad)
+ {
+         struct a {
+                 uintptr_t psp;  /* procset_t */
+                 uint_t cmd;     /* psecflags_cmd_t */
+                 uint_t arg;
+         } *uap = (struct a *)ttolwp(curthread)->lwp_ap;
+ 
+         au_uwrite(au_to_arg32(2, "cmd", (uint_t)uap->cmd));
+         au_uwrite(au_to_arg32(3, "arg", (uint_t)uap->arg));
+ }
+ 
  /* acct start function */
  /*ARGSUSED*/
  static void
  aus_acct(struct t_audit_data *tad)
  {