OS-5148 ftruncate at offset should emit proper events
Reviewed by: Bryan Cantrill <bryan@joyent.com>
Reviewed by: Jerry Jelinek <jerry.jelinek@joyent.com>
OS-5291 lxbrand inotify02 LTP regression
Reviewed by: Patrick Mooney <patrick.mooney@joyent.com>
OS-3294 add support for inotify
Reviewed by: Jerry Jelinek <jerry.jelinek@joyent.com>
Reviewed by: Robert Mustacchi <rm@joyent.com>

*** 23,33 ****
   * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
   * Use is subject to license terms.
   */
  
  /*
!  * Copyright (c) 2015, Joyent, Inc. All rights reserved.
   * Copyright 2015 Nexenta Systems, Inc.  All rights reserved.
   * Copyright 2016 RackTop Systems.
   */
  
  #include <sys/types.h>
--- 23,33 ----
   * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
   * Use is subject to license terms.
   */
  
  /*
!  * Copyright 2016, Joyent, Inc.
   * Copyright 2015 Nexenta Systems, Inc.  All rights reserved.
   * Copyright 2016 RackTop Systems.
   */
  
  #include <sys/types.h>
*** 785,796 ****
                  rw_enter(&tp->tn_contents, RW_WRITER);
                  error = tmpnode_trunc(tm, tp, (ulong_t)vap->va_size);
                  rw_exit(&tp->tn_contents);
                  rw_exit(&tp->tn_rwlock);
  
!                 if (error == 0 && vap->va_size == 0)
                          vnevent_truncate(vp, ct);
  
                  goto out1;
          }
  out:
          mutex_exit(&tp->tn_tlock);
--- 785,801 ----
                  rw_enter(&tp->tn_contents, RW_WRITER);
                  error = tmpnode_trunc(tm, tp, (ulong_t)vap->va_size);
                  rw_exit(&tp->tn_contents);
                  rw_exit(&tp->tn_rwlock);
  
!                 if (error == 0) {
!                         if (vap->va_size == 0) {
                                  vnevent_truncate(vp, ct);
+                         } else {
+                                 vnevent_resize(vp, ct);
+                         }
+                 }
  
                  goto out1;
          }
  out:
          mutex_exit(&tp->tn_tlock);
*** 1302,1315 ****
  
          if (error == 0) {
                  vnevent_rename_src(TNTOV(fromtp), odvp, onm, ct);
                  /*
                   * vnevent_rename_dest is called in tdirenter().
-                  * Notify the target dir if not same as source dir.
                   */
!                 if (ndvp != odvp)
!                         vnevent_rename_dest_dir(ndvp, ct);
          }
  
  done:
          tmpnode_rele(fromtp);
          mutex_exit(&tm->tm_renamelck);
--- 1307,1318 ----
  
          if (error == 0) {
                  vnevent_rename_src(TNTOV(fromtp), odvp, onm, ct);
                  /*
                   * vnevent_rename_dest is called in tdirenter().
                   */
!                 vnevent_rename_dest_dir(ndvp, TNTOV(fromtp), nnm, ct);
          }
  
  done:
          tmpnode_rele(fromtp);
          mutex_exit(&tm->tm_renamelck);
*** 2342,2354 ****
          if ((error = convoff(vp, bfp, 0, (offset_t)offset)) == 0) {
                  if ((bfp->l_start > MAXOFF_T) || (bfp->l_len > MAXOFF_T))
                          return (EFBIG);
                  error = tmp_freesp(vp, bfp, flag);
  
!                 if (error == 0 && bfp->l_start == 0)
                          vnevent_truncate(vp, ct);
          }
          return (error);
  }
  
  /* ARGSUSED */
  static int
--- 2345,2362 ----
          if ((error = convoff(vp, bfp, 0, (offset_t)offset)) == 0) {
                  if ((bfp->l_start > MAXOFF_T) || (bfp->l_len > MAXOFF_T))
                          return (EFBIG);
                  error = tmp_freesp(vp, bfp, flag);
  
!                 if (error == 0) {
!                         if (bfp->l_start == 0) {
                                  vnevent_truncate(vp, ct);
+                         } else {
+                                 vnevent_resize(vp, ct);
                          }
+                 }
+         }
          return (error);
  }
  
  /* ARGSUSED */
  static int