2605 want to resume interrupted zfs send
Reviewed by: George Wilson <george.wilson@delphix.com>
Reviewed by: Paul Dagnelie <pcd@delphix.com>
Reviewed by: Richard Elling <Richard.Elling@RichardElling.com>
Reviewed by: Xin Li <delphij@freebsd.org>
Reviewed by: Arne Jansen <sensille@gmx.net>
Approved by: Dan McDonald <danmcd@omniti.com>
re #13850 Refactor ZFS config discovery IOCs to libzfs_core patterns

*** 18,28 ****
   *
   * CDDL HEADER END
   */
  
  /*
!  * Copyright 2012 Nexenta Systems, Inc.  All rights reserved.
   * Copyright (c) 1989, 2010, Oracle and/or its affiliates. All rights reserved.
   * Copyright (c) 2012, 2014 by Delphix. All rights reserved.
   * Copyright 2015 Joyent, Inc.
   */
  
--- 18,28 ----
   *
   * CDDL HEADER END
   */
  
  /*
!  * Copyright 2013 Nexenta Systems, Inc.  All rights reserved.
   * Copyright (c) 1989, 2010, Oracle and/or its affiliates. All rights reserved.
   * Copyright (c) 2012, 2014 by Delphix. All rights reserved.
   * Copyright 2015 Joyent, Inc.
   */
  
*** 100,110 ****
  #include "systable.h"
  #include "proto.h"
  
  void    show_sigset(private_t *, long, const char *);
  void    show_ioctl(private_t *, int, long);
! void    show_zfs_ioc(private_t *, long);
  
  static void
  mk_ctime(char *str, size_t maxsize, time_t value)
  {
          (void) strftime(str, maxsize, "%b %e %H:%M:%S %Z %Y",
--- 100,110 ----
  #include "systable.h"
  #include "proto.h"
  
  void    show_sigset(private_t *, long, const char *);
  void    show_ioctl(private_t *, int, long);
! void    show_zfs_ioc(private_t *, long, int);
  
  static void
  mk_ctime(char *str, size_t maxsize, time_t value)
  {
          (void) strftime(str, maxsize, "%b %e %H:%M:%S %Z %Y",
*** 1486,1496 ****
                  show_audio_info(pri, offset);
                  break;
  
          default:
                  if ((code & ~0xff) == ZFS_IOC) {
!                         show_zfs_ioc(pri, offset);
                          break;
                  }
  
                  if (code & IOC_INOUT) {
                          const char *str = ioctldatastruct(code);
--- 1486,1496 ----
                  show_audio_info(pri, offset);
                  break;
  
          default:
                  if ((code & ~0xff) == ZFS_IOC) {
!                         show_zfs_ioc(pri, offset, err);
                          break;
                  }
  
                  if (code & IOC_INOUT) {
                          const char *str = ioctldatastruct(code);
*** 4872,4882 ****
                  break;
          }
  }
  
  void
! show_zfs_ioc(private_t *pri, long addr)
  {
          static const zfs_share_t zero_share = {0};
          static const dmu_objset_stats_t zero_objstats = {0};
          static const struct drr_begin zero_drrbegin = {0};
          static const zinject_record_t zero_injectrec = {0};
--- 4872,4882 ----
                  break;
          }
  }
  
  void
! show_zfs_ioc(private_t *pri, long addr, int err)
  {
          static const zfs_share_t zero_share = {0};
          static const dmu_objset_stats_t zero_objstats = {0};
          static const struct drr_begin zero_drrbegin = {0};
          static const zinject_record_t zero_injectrec = {0};
*** 4907,4920 ****
--- 4907,4925 ----
                  (void) printf("    nvlist_src:\n");
                  show_packed_nvlist(pri, zc.zc_nvlist_src,
                      zc.zc_nvlist_src_size);
          }
          if (zc.zc_nvlist_dst_size) {
+                 if (zc.zc_nvlist_dst_filled) {
                          (void) printf("    nvlist_dst:\n");
                          show_packed_nvlist(pri, zc.zc_nvlist_dst,
                              zc.zc_nvlist_dst_size);
+                 } else if (err == ENOMEM) {
+                         (void) printf("    nvlist_dst_size: %llu\n",
+                             (u_longlong_t)zc.zc_nvlist_dst_size);
                  }
+         }
          if (zc.zc_cookie != 0) {
                  (void) printf("    zc_cookie=%llu\n",
                      (u_longlong_t)zc.zc_cookie);
          }
          if (zc.zc_objset_type != 0) {