3946 ::gcore
Reviewed by: Adam Leventhal <ahl@delphix.com>
Reviewed by: Matthew Ahrens <mahrens@delphix.com>

*** 21,33 ****
   */
  /*
   * Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
   * Use is subject to license terms.
   */
  
- #pragma ident   "%Z%%M% %I%     %E% SMI"
- 
  #include <limits.h>
  #include <string.h>
  #include <stdarg.h>
  #include <stdio.h>
  #include <errno.h>
--- 21,34 ----
   */
  /*
   * Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
   * Use is subject to license terms.
   */
+ /*
+  * Copyright (c) 2013 by Delphix. All rights reserved.
+  */
  
  #include <limits.h>
  #include <string.h>
  #include <stdarg.h>
  #include <stdio.h>
  #include <errno.h>
*** 147,152 ****
--- 148,246 ----
  /*PRINTFLIKE2*/
  void
  Perror_printf(struct ps_prochandle *P, const char *format, ...)
  {
          /* nothing to do here */
+ }
+ 
+ /*
+  * Default operations.
+  */
+ static ssize_t
+ Pdefault_ssizet()
+ {
+         return (-1);
+ }
+ 
+ static int
+ Pdefault_int()
+ {
+         return (-1);
+ }
+ 
+ static void
+ Pdefault_void()
+ {
+ }
+ 
+ static void *
+ Pdefault_voidp()
+ {
+         return (NULL);
+ }
+ 
+ static const ps_ops_t P_default_ops = {
+         .pop_pread      = (pop_pread_t)Pdefault_ssizet,
+         .pop_pwrite     = (pop_pwrite_t)Pdefault_ssizet,
+         .pop_read_maps  = (pop_read_maps_t)Pdefault_int,
+         .pop_read_aux   = (pop_read_aux_t)Pdefault_void,
+         .pop_cred       = (pop_cred_t)Pdefault_int,
+         .pop_priv       = (pop_priv_t)Pdefault_int,
+         .pop_psinfo     = (pop_psinfo_t)Pdefault_voidp,
+         .pop_status     = (pop_status_t)Pdefault_void,
+         .pop_lstatus    = (pop_lstatus_t)Pdefault_voidp,
+         .pop_lpsinfo    = (pop_lpsinfo_t)Pdefault_voidp,
+         .pop_fini       = (pop_fini_t)Pdefault_void,
+         .pop_platform   = (pop_platform_t)Pdefault_voidp,
+         .pop_uname      = (pop_uname_t)Pdefault_int,
+         .pop_zonename   = (pop_zonename_t)Pdefault_voidp,
+         .pop_execname   = (pop_execname_t)Pdefault_voidp,
+ #if defined(__i386) || defined(__amd64)
+         .pop_ldt        = (pop_ldt_t)Pdefault_int
+ #endif
+ };
+ 
+ /*
+  * Initialize the destination ops vector with functions from the source.
+  * Functions which are NULL in the source ops vector are set to corresponding
+  * default function in the destination vector.
+  */
+ void
+ Pinit_ops(ps_ops_t *dst, const ps_ops_t *src)
+ {
+         *dst = P_default_ops;
+ 
+         if (src->pop_pread != NULL)
+                 dst->pop_pread = src->pop_pread;
+         if (src->pop_pwrite != NULL)
+                 dst->pop_pwrite = src->pop_pwrite;
+         if (src->pop_read_maps != NULL)
+                 dst->pop_read_maps = src->pop_read_maps;
+         if (src->pop_read_aux != NULL)
+                 dst->pop_read_aux = src->pop_read_aux;
+         if (src->pop_cred != NULL)
+                 dst->pop_cred = src->pop_cred;
+         if (src->pop_priv != NULL)
+                 dst->pop_priv = src->pop_priv;
+         if (src->pop_psinfo != NULL)
+                 dst->pop_psinfo = src->pop_psinfo;
+         if (src->pop_status != NULL)
+                 dst->pop_status = src->pop_status;
+         if (src->pop_lstatus != NULL)
+                 dst->pop_lstatus = src->pop_lstatus;
+         if (src->pop_lpsinfo != NULL)
+                 dst->pop_lpsinfo = src->pop_lpsinfo;
+         if (src->pop_fini != NULL)
+                 dst->pop_fini = src->pop_fini;
+         if (src->pop_platform != NULL)
+                 dst->pop_platform = src->pop_platform;
+         if (src->pop_uname != NULL)
+                 dst->pop_uname = src->pop_uname;
+         if (src->pop_zonename != NULL)
+                 dst->pop_zonename = src->pop_zonename;
+         if (src->pop_execname != NULL)
+                 dst->pop_execname = src->pop_execname;
+ #if defined(__i386) || defined(__amd64)
+         if (src->pop_ldt != NULL)
+                 dst->pop_ldt = src->pop_ldt;
+ #endif
  }