OS-3280 need a way to specify the root of a native system in the lx brand
OS-3279 lx brand should allow delegated datasets
Reviewed by: Jerry Jelinek <jerry.jelinek@joyent.com>

*** 20,29 ****
--- 20,30 ----
   */
  
  /*
   * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
   * Use is subject to license terms.
+  * Copyright (c) 2014, Joyent, Inc.  All rights reserved.
   */
  
  #include <stdio.h>
  #include <stdio_ext.h>
  #include <stdlib.h>
*** 40,49 ****
--- 41,51 ----
  #include <sys/stat.h>
  #include <sys/mkdev.h>
  #include <sys/mman.h>
  #include <sys/lgrp_user.h>
  #include <libproc.h>
+ #include "ptools_common.h"
  
  #include "pmap_common.h"
  
  #define KILOBYTE        1024
  #define MEGABYTE        (KILOBYTE * KILOBYTE)
*** 197,207 ****
          const char *bar8 = "-------";
          const char *bar16 = "----------";
          const char *bar;
          struct rlimit rlim;
          struct stat64 statbuf;
!         char buf[128];
          int mapfd;
          int prg_gflags = PGRAB_RDONLY;
          int prr_flags = 0;
          boolean_t use_agent_lwp = B_FALSE;
  
--- 199,209 ----
          const char *bar8 = "-------";
          const char *bar16 = "----------";
          const char *bar;
          struct rlimit rlim;
          struct stat64 statbuf;
!         char buf[PATH_MAX];
          int mapfd;
          int prg_gflags = PGRAB_RDONLY;
          int prr_flags = 0;
          boolean_t use_agent_lwp = B_FALSE;
  
*** 356,366 ****
                  bar = addr_width == 8 ? bar8 : bar16;
                  (void) memcpy(&psinfo, Ppsinfo(Pr), sizeof (psinfo_t));
                  proc_unctrl_psinfo(&psinfo);
  
                  if (Pstate(Pr) != PS_DEAD) {
!                         (void) snprintf(buf, sizeof (buf),
                              "/proc/%d/map", (int)psinfo.pr_pid);
                          if ((mapfd = open(buf, O_RDONLY)) < 0) {
                                  (void) fprintf(stderr, "%s: cannot "
                                      "examine %s: lost control of "
                                      "process\n", command, arg);
--- 358,368 ----
                  bar = addr_width == 8 ? bar8 : bar16;
                  (void) memcpy(&psinfo, Ppsinfo(Pr), sizeof (psinfo_t));
                  proc_unctrl_psinfo(&psinfo);
  
                  if (Pstate(Pr) != PS_DEAD) {
!                         (void) proc_snprintf(buf, sizeof (buf),
                              "/proc/%d/map", (int)psinfo.pr_pid);
                          if ((mapfd = open(buf, O_RDONLY)) < 0) {
                                  (void) fprintf(stderr, "%s: cannot "
                                      "examine %s: lost control of "
                                      "process\n", command, arg);
*** 588,598 ****
          int mapfd, nmap, i, rc;
          struct stat st;
          prmap_t *prmapp, *pmp;
          ssize_t n;
  
!         (void) snprintf(mapname, sizeof (mapname),
              "/proc/%d/rmap", (int)Pstatus(Pr)->pr_pid);
  
          if ((mapfd = open(mapname, O_RDONLY)) < 0 || fstat(mapfd, &st) != 0) {
                  if (mapfd >= 0)
                          (void) close(mapfd);
--- 590,600 ----
          int mapfd, nmap, i, rc;
          struct stat st;
          prmap_t *prmapp, *pmp;
          ssize_t n;
  
!         (void) proc_snprintf(mapname, sizeof (mapname),
              "/proc/%d/rmap", (int)Pstatus(Pr)->pr_pid);
  
          if ((mapfd = open(mapname, O_RDONLY)) < 0 || fstat(mapfd, &st) != 0) {
                  if (mapfd >= 0)
                          (void) close(mapfd);
*** 629,639 ****
          int mapfd, nmap, i, rc;
          struct stat st;
          prxmap_t *prmapp, *pmp;
          ssize_t n;
  
!         (void) snprintf(mapname, sizeof (mapname),
              "/proc/%d/xmap", (int)Pstatus(Pr)->pr_pid);
  
          if ((mapfd = open(mapname, O_RDONLY)) < 0 || fstat(mapfd, &st) != 0) {
                  if (mapfd >= 0)
                          (void) close(mapfd);
--- 631,641 ----
          int mapfd, nmap, i, rc;
          struct stat st;
          prxmap_t *prmapp, *pmp;
          ssize_t n;
  
!         (void) proc_snprintf(mapname, sizeof (mapname),
              "/proc/%d/xmap", (int)Pstatus(Pr)->pr_pid);
  
          if ((mapfd = open(mapname, O_RDONLY)) < 0 || fstat(mapfd, &st) != 0) {
                  if (mapfd >= 0)
                          (void) close(mapfd);