uts: add a concept of a 'default' set of privileges, separate from 'basic'

*** 56,65 ****
--- 56,75 ----
          LOADPRIVDATA(d);
  
          return (d->pd_basicset);
  }
  
+ priv_set_t *
+ priv_default(void)
+ {
+         priv_data_t *d;
+ 
+         LOADPRIVDATA(d);
+ 
+         return (d->pd_defaultset);
+ }
+ 
  /*
   *      Name:   priv_str_to_set()
   *
   *      Description:    Given a buffer with privilege strings, the
   *      equivalent privilege set is returned.
*** 78,89 ****
  
          char *base;
          char *offset;
          char *last;
          priv_set_t *pset = NULL;
!         priv_set_t *zone;
!         priv_set_t *basic;
  
          if (endptr != NULL)
                  *endptr = NULL;
  
          if ((base = libc_strdup(priv_names)) == NULL ||
--- 88,100 ----
  
          char *base;
          char *offset;
          char *last;
          priv_set_t *pset = NULL;
!         priv_set_t *zone = NULL;
!         priv_set_t *basic = NULL;
!         priv_set_t *deflt = NULL;
  
          if (endptr != NULL)
                  *endptr = NULL;
  
          if ((base = libc_strdup(priv_names)) == NULL ||
*** 93,102 ****
--- 104,114 ----
                  return (NULL);
          }
  
          priv_emptyset(pset);
          basic = priv_basic();
+         deflt = priv_default();
          zone = privdata->pd_zoneset;
  
          /* This is how to use strtok_r nicely in a while loop ... */
          last = base;
  
*** 104,113 ****
--- 116,128 ----
                  /*
                   * Search for these special case strings.
                   */
                  if (basic != NULL && strcasecmp(offset, "basic") == 0) {
                          priv_union(basic, pset);
+                 } else if (deflt != NULL && strcasecmp(offset,
+                     "default") == 0) {
+                         priv_union(deflt, pset);
                  } else if (strcasecmp(offset, "none") == 0) {
                          priv_emptyset(pset);
                  } else if (strcasecmp(offset, "all") == 0) {
                          priv_fillset(pset);
                  } else if (strcasecmp(offset, "zone") == 0) {