2917 DTrace in a zone should have limited provider access

*** 21,30 ****
--- 21,33 ----
  /*
   * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
   * Use is subject to license terms.
   */
  
+ /*
+  * Copyright (c) 2012, Joyent, Inc. All rights reserved.
+  */
  
  #include <sys/modctl.h>
  #include <sys/sunddi.h>
  #include <sys/dtrace.h>
  #include <sys/kobj.h>
*** 371,383 ****
  
          ddi_report_dev(devi);
          sdt_devi = devi;
  
          for (prov = sdt_providers; prov->sdtp_name != NULL; prov++) {
                  if (dtrace_register(prov->sdtp_name, prov->sdtp_attr,
!                     DTRACE_PRIV_KERNEL, NULL,
!                     &sdt_pops, prov, &prov->sdtp_id) != 0) {
                          cmn_err(CE_WARN, "failed to register sdt provider %s",
                              prov->sdtp_name);
                  }
          }
  
--- 374,396 ----
  
          ddi_report_dev(devi);
          sdt_devi = devi;
  
          for (prov = sdt_providers; prov->sdtp_name != NULL; prov++) {
+                 uint32_t priv;
+ 
+                 if (prov->sdtp_priv == DTRACE_PRIV_NONE) {
+                         priv = DTRACE_PRIV_KERNEL;
+                         sdt_pops.dtps_mode = NULL;
+                 } else {
+                         priv = prov->sdtp_priv;
+                         ASSERT(priv == DTRACE_PRIV_USER);
+                         sdt_pops.dtps_mode = sdt_mode;
+                 }
+ 
                  if (dtrace_register(prov->sdtp_name, prov->sdtp_attr,
!                     priv, NULL, &sdt_pops, prov, &prov->sdtp_id) != 0) {
                          cmn_err(CE_WARN, "failed to register sdt provider %s",
                              prov->sdtp_name);
                  }
          }