Update. cvs/libc-ud-970318

1997-03-19 01:40  Ulrich Drepper  <drepper@cygnus.com>

	* sysdeps/unix/sysv/sco3.2.4/Dist: New file.

	* sysdeps/unix/sysv/sysv4/Dist: Add __getpgid.c and __setpgid.c.

	* sysdeps/unix/bsd/Dist: Add bsdstat.h, setrgid.c, and setruid.c.

	* sysdeps/unix/sysv/Dist: Add direct.h.

	* sysdeps/unix/sysv/linux/Dist: Add netinet/tcp.h.

	* Make-dist ($(tardir).tar): Prefer writing temporary file to
	$TMPDIR is available.  The default is /tmp.

	* sysdeps/generic/ip.h: Move to...
	* sysdeps/generic/netinet/ip.h: ...here.

	* Makefile (tests): Quote $(CC) argument to isomac program.
	Patch by H.J. Lu <hjl@gnu.ai.mit.edu>.

	* sysdeps/i386/setjmp.S (__setjmp): Fix fatal bug where 0 argument
	is placed in wrong place on the stack.
	Reported by Marc Lehmann <mlehmann@hildesheim.sgh-net.de>.
	* sysdeps/tst-setjmp.c: Add new test for above problem.

	* sysdeps/libm-i387/e_pow.S: Compute PIC addres early.
	* sysdeps/libm-i387/e_powf.S: Likewise.
	* sysdeps/libm-i387/e_powl.S: Likewise.

1997-03-18 23:18  Ulrich Drepper  <drepper@cygnus.com>

	* time/offtime.c (__offtime): Change type of `yg' to long int.
	Reported by a sun <asun@zoology.washington.edu>.

1997-03-18 23:08  a sun  <asun@zoology.washington.edu>

	* sysdeps/unix/sysv/linux/net/if_ppp.h (PPP_VERSION): Define to
	2.2.0 to prevent version mismatch.

1997-03-17 19:26  Andreas Jaeger  <aj@arthur.pfalz.de>

	* stdio-common/printf_fphex.c (MIN): Only define MIN if not
	already defined.

1997-03-14 23:34  Geoff Keating  <geoffk@ozemail.com.au>

	* sysdeps/unix/sysv/linux/powerpc/termbits.h: Leave ioctl numbers
	in ioctls.h.

	* elf/rtld.c (_dl_start): Call elf_machine_runtime_setup when the
	loader first relocates itself.
	* sysdeps/powerpc/elf/start.c (__start1): Fix bug for static objects.
	* sysdeps/powerpc/dl-machine.h (elf_machine_rela): Fix bugs in
	jump slot relocation. Prefer relative branches (some PowerPC chips
	don't predict absolute branches).
	(elf_machine_runtime_setup): Simplify and correct expressions.
	(RTLD_START): Fix bug changing _dl_starting_up.
	* sysdeps/unix/sysv/linux/powerpc/dl-sysdep.c: Added. Deal with
	strange Linux/PPC padding of initial stack.

1997-03-11 04:14  Geoff Keating  <geoffk@ozemail.com.au>

	* sysdeps/unix/sysv/linux/powerpc/termbits.h: Increase NCCS to 39,
	for future expansion.
	* sysdeps/unix/sysv/linux/powerpc/sys/kernel_termios.h: Added.
	* sysdeps/powerpc/dl-machine.h (elf_machine_rela): Explain why it
	can't have a switch statement.
	* sysdeps/powerpc/elf/start.c (__start1): Explain why it can't be
	static.

	* sysdeps/powerpc/elf/start.c (_start): Use .previous to avoid
	confusing gcc's idea of the current section.
	* sysdeps/powerpc/dl-machine.h (ELF_MACHINE_RUNTIME_TRAMPOLINE,
	RTLD_START): Likewise.

1997-03-08 09:10  Geoff Keating  <geoffk@ozemail.com.au>

	* sysdeps/powerpc/dl-machine.h (elf_machine_rela,
	elf_machine_runtime_setup): Flush data & instruction caches when
	necessary, for 603/604 support. Add better support for large PLTs.
	(elf_machine_rela): Remove relocations that wouldn't work if
	anyone ever used them. Use memcpy for copy reloc, it'll be safe.
	Never target branch relocations at a PLT entry.

	* sysdeps/powerpc/bsd-setjmp.S: Make jump to PLT entry if we are
	generating PIC.
	* sysdeps/powerpc/bsd-_setjmp.S: Likewise.
	* sysdeps/powerpc/setjmp.S: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/clone.S: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/socket.S: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/syscall.S: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/sysdep.h: Likewise.

	* sysdeps/powerpc/elf/start.c: Clean up.

	* sysdeps/powerpc/__longjmp.S: Return 'value' as result from
	setjmp call.

	* sysdeps/unix/sysv/linux/powerpc/statbuf.h: New file.

1997-03-09 12:36  H.J. Lu  <hjl@gnu.ai.mit.edu>

	* Make-dist (srcs): Add $(test-srcs).
	* MakeTAGS (all-sources): Likewise.
	* Makerules (depfiles, common-mostlyclean): Likewise.
	* Rules (tests): Likewise.

1997-03-18 05:28  Roland McGrath  <roland@frob.com>

	* elf/dl-reloc.c (RESOLVE): Don't try to resolve ocal symbols.

1997-03-17 21:39  Philip Blundell  <phil@london.uk.eu.org>

	* nis/nss_nis/nis-service.c (_nss_nis_getservbyname_r): Allow
	protocol=NULL to match any protocol rather than returning an
	error.

1997-03-17 19:00  Philip Blundell  <phil@london.uk.eu.org>

	* nss/nss_files/files-service.c (servbyname): Match any protocol
	if proto==NULL.

1997-03-18 05:17  Ulrich Drepper  <drepper@cygnus.com>

	* sysdeps/unix/sysv/linux/alpha/fcntlbits.h: Don't define O_NORW.
	* sysdeps/unix/sysv/linux/fcntlbits.h: Likewise.
	Proposed by Thomas Bushnell, n/BSG.

1997-03-18 07:53  H.J. Lu  <hjl@gnu.ai.mit.edu>

	* sysdeps/generic/setenv.c (setenv): Don't copy name when we reuse
	the buffer for replacement.

1997-03-16 19:30  H.J. Lu  <hjl@gnu.ai.mit.edu>

	* sysdeps/unix/sysv/linux/syscalls.list: Add sys_fstat,
	sys_lstat and sys_stat.

1997-03-17 12:43  Thorsten Kukuk  <kukuk@vt.uni-paderborn.de>

	Add NIS+ functions
	* shlib-versions: Add libnss_nisplus.
	* nis/Makefile: Add NIS+ source files.
	* nis/nis_call.c: New file.
	* nis/nis_clone.c: New file.
	* nis/nis_error.c: New file.
	* nis/nis_file.c: New file.
	* nis/nis_free.c: New file.
	* nis/nis_intern.c: New file.
	* nis/nis_intern.h: New file.
	* nis/nis_local_names.c: New file.
	* nis/nis_names.c: New file.
	* nis/nis_print.c: New file.
	* nis/nis_server.c: New file.
	* nis/nis_subr.c: New file.
	* nis/nis_table.c: New file.
	* nis/nis_xdr.c: New file.
	* nis/nss-nisplus.h: New file.
	* nis/nss_nisplus/nisplus-alias.c: New file.
	* nis/nss_nisplus/nisplus-ethers.c: New file.
	* nis/nss_nisplus/nisplus-grp.c: New file.
	* nis/nss_nisplus/nisplus-hosts.c: New file.
	* nis/nss_nisplus/nisplus-netgrp.c: New file.
	* nis/nss_nisplus/nisplus-network.c: New file.
	* nis/nss_nisplus/nisplus-proto.c: New file.
	* nis/nss_nisplus/nisplus-publickey.c: New file.
	* nis/nss_nisplus/nisplus-pwd.c: New file.
	* nis/nss_nisplus/nisplus-rpc.c: New file.
	* nis/nss_nisplus/nisplus-service.c: New file.
	* nis/nss_nisplus/nisplus-spwd.c: New file.
	* nis/rpcsvc/nis.h: New file.
	* nis/rpcsvc/nis.x: New file.
	* nis/rpcsvc/nis_object.x: New file.
	* nis/rpcsvc/nis_tags.h: New file.
	* nis/rpcsvc/nislib.h: New file.

1997-03-17 12:52  Thomas Bushnell, n/BSG  <thomas@gnu.ai.mit.edu>

	* mach/devstream.c (output/write_some): Don't try and write more
	than IO_INBAND_MAX in a single call to device_write_inband.

	* sysdeps/libm-ieee754/w_atan2.c: Don't ignore exception if library
	* sysdeps/libm-ieee754/w_atan2f.c: Likewise.
	* sysdeps/libm-ieee754/w_atan2l.c: Likewise.
	* sysdeps/unix/sysv/linux/sys/mman.h (msync): Add description for
	* stdlib/atoll.c: Undefine atoll, not atol.

1 files changed, 551 insertions, 0 deletions

diff --git a/nis/nis_clone.c b/nis/nis_clone.c
new file mode 100644
index 0000000000..860abb386c
--- /dev/null
+++ b/nis/nis_clone.c
@@ -0,0 +1,551 @@
+/* Copyright (c) 1997 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Thorsten Kukuk <kukuk@vt.uni-paderborn.de>, 1997.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <string.h>
+#include <rpcsvc/nis.h>
+#include <rpcsvc/nislib.h>
+
+directory_obj *
+nis_clone_directory (const directory_obj *src, directory_obj *dest)
+{
+  directory_obj *res;
+
+  if (src == NULL)
+    return NULL;
+
+  if (dest == NULL)
+    {
+      res = calloc (1, sizeof (directory_obj));
+      if (res == NULL)
+	return NULL;
+    }
+  else
+    res = dest;
+
+  if (src->do_name)
+    res->do_name = strdup (src->do_name);
+  else
+    res->do_name = NULL;
+  res->do_type = src->do_type;
+  if (src->do_servers.do_servers_len > 0)
+    {
+      size_t i;
+
+      res->do_servers.do_servers_len = src->do_servers.do_servers_len;
+      if ((res->do_servers.do_servers_val =
+	   malloc (src->do_servers.do_servers_len * sizeof (nis_server)))
+	  == NULL)
+	return NULL;
+
+      for (i = 0; i < src->do_servers.do_servers_len; ++i)
+	{
+	  if (src->do_servers.do_servers_val[i].name != NULL)
+	    res->do_servers.do_servers_val[i].name =
+	      strdup (src->do_servers.do_servers_val[i].name);
+	  else
+	    res->do_servers.do_servers_val[i].name = NULL;
+
+	  res->do_servers.do_servers_val[i].ep.ep_len =
+	    src->do_servers.do_servers_val[i].ep.ep_len;
+	  if (res->do_servers.do_servers_val[i].ep.ep_len > 0)
+	    {
+	      size_t j;
+
+	      res->do_servers.do_servers_val[i].ep.ep_val =
+		malloc (src->do_servers.do_servers_val[i].ep.ep_len *
+			sizeof (endpoint));
+	      for (j = 0; j < res->do_servers.do_servers_val[i].ep.ep_len; ++j)
+		{
+		  if (src->do_servers.do_servers_val[i].ep.ep_val[j].uaddr)
+		    res->do_servers.do_servers_val[i].ep.ep_val[j].uaddr
+		      = strdup (src->do_servers.do_servers_val[i].ep.ep_val[j].uaddr);
+		  else
+		    res->do_servers.do_servers_val[i].ep.ep_val[j].uaddr = NULL;
+
+		  if (src->do_servers.do_servers_val[i].ep.ep_val[j].family)
+		    res->do_servers.do_servers_val[i].ep.ep_val[j].family
+		      = strdup (src->do_servers.do_servers_val[i].ep.ep_val[j].family);
+		  else
+		    res->do_servers.do_servers_val[i].ep.ep_val[j].family = NULL;
+
+		  if (src->do_servers.do_servers_val[i].ep.ep_val[j].proto)
+		    res->do_servers.do_servers_val[i].ep.ep_val[j].proto
+		      = strdup (src->do_servers.do_servers_val[i].ep.ep_val[j].proto);
+		  else
+		    res->do_servers.do_servers_val[i].ep.ep_val[j].proto = NULL;
+		}
+	    }
+	  else
+	    {
+	      res->do_servers.do_servers_val[i].ep.ep_val = NULL;
+	    }
+	  res->do_servers.do_servers_val[i].key_type =
+	    src->do_servers.do_servers_val[i].key_type;
+	  res->do_servers.do_servers_val[i].pkey.n_len =
+	    src->do_servers.do_servers_val[i].pkey.n_len;
+	  if (res->do_servers.do_servers_val[i].pkey.n_len > 0)
+	    {
+	      res->do_servers.do_servers_val[i].pkey.n_bytes =
+		malloc (src->do_servers.do_servers_val[i].pkey.n_len);
+	      if (res->do_servers.do_servers_val[i].pkey.n_bytes == NULL)
+		return NULL;
+	      memcpy (res->do_servers.do_servers_val[i].pkey.n_bytes,
+		      src->do_servers.do_servers_val[i].pkey.n_bytes,
+		      src->do_servers.do_servers_val[i].pkey.n_len);
+	    }
+	  else
+	    res->do_servers.do_servers_val[i].pkey.n_bytes = NULL;
+	}
+    }
+  else
+    {
+      res->do_servers.do_servers_len = 0;
+      res->do_servers.do_servers_val = NULL;
+    }
+  res->do_ttl  = src->do_ttl;
+  res->do_armask.do_armask_len = src->do_armask.do_armask_len;
+  if (res->do_armask.do_armask_len > 0)
+    {
+      if ((res->do_armask.do_armask_val =
+	   malloc (src->do_armask.do_armask_len * sizeof (oar_mask))) == NULL)
+	return NULL;
+      memcpy (res->do_armask.do_armask_val, src->do_armask.do_armask_val,
+	      src->do_armask.do_armask_len * sizeof (oar_mask));
+    }
+  else
+    {
+      res->do_armask.do_armask_val = NULL;
+    }
+
+  return res;
+}
+
+group_obj *
+nis_clone_group (const group_obj *src, group_obj *dest)
+{
+  size_t i;
+  group_obj *res = NULL;
+
+  if (src == NULL)
+    return NULL;
+
+  if (dest == NULL)
+    {
+      res = calloc (1, sizeof (group_obj));
+      if (res == NULL)
+	return NULL;
+    }
+  else
+    res = dest;
+
+  res->gr_flags = src->gr_flags;
+
+  res->gr_members.gr_members_len = src->gr_members.gr_members_len;
+  if (res->gr_members.gr_members_len > 0)
+    {
+      if (res->gr_members.gr_members_val == NULL)
+	{
+	  res->gr_members.gr_members_val =
+	    malloc (res->gr_members.gr_members_len * sizeof (nis_name));
+	  if (res->gr_members.gr_members_val == NULL)
+	    return NULL;
+	}
+      for (i = 0; i < res->gr_members.gr_members_len; ++i)
+	if (src->gr_members.gr_members_val[i] != NULL)
+	  res->gr_members.gr_members_val[i] =
+	    strdup (src->gr_members.gr_members_val[i]);
+	else
+	  res->gr_members.gr_members_val[i] = NULL;
+    }
+
+  return res;
+}
+
+table_obj *
+nis_clone_table (const table_obj *src, table_obj *dest)
+{
+  size_t i;
+  table_obj *res = NULL;
+
+  if (src == NULL)
+    return NULL;
+
+  if (dest == NULL)
+    {
+      res = calloc (1, sizeof (table_obj));
+      if (res == NULL)
+	return res;
+    }
+  else
+    res = dest;
+
+  if (src->ta_type != NULL)
+    {
+      if ((res->ta_type = strdup (src->ta_type)) == NULL)
+	return NULL;
+    }
+  else
+    res->ta_type = NULL;
+
+  res->ta_maxcol = src->ta_maxcol;
+  res->ta_sep = src->ta_sep;
+  res->ta_cols.ta_cols_len = src->ta_cols.ta_cols_len;
+  if (res->ta_cols.ta_cols_val == NULL)
+    {
+      res->ta_cols.ta_cols_val =
+	malloc (src->ta_cols.ta_cols_len * sizeof (table_col));
+      if (res->ta_cols.ta_cols_val == NULL)
+	return NULL;
+    }
+  for (i = 0; i < res->ta_cols.ta_cols_len; i++)
+    {
+      if (src->ta_cols.ta_cols_val[i].tc_name == NULL)
+	res->ta_cols.ta_cols_val[i].tc_name = NULL;
+      else
+	res->ta_cols.ta_cols_val[i].tc_name =
+	  strdup (src->ta_cols.ta_cols_val[i].tc_name);
+      res->ta_cols.ta_cols_val[i].tc_flags =
+	src->ta_cols.ta_cols_val[i].tc_flags;
+      res->ta_cols.ta_cols_val[i].tc_rights =
+	src->ta_cols.ta_cols_val[i].tc_rights;
+    }
+
+  if (src->ta_path != NULL)
+    {
+      if ((res->ta_path = strdup (src->ta_path)) == NULL)
+	return NULL;
+    }
+  else
+    res->ta_path = NULL;
+
+  return res;
+}
+
+entry_obj *
+nis_clone_entry (const entry_obj *src, entry_obj *dest)
+{
+  size_t i;
+  entry_obj *res = NULL;
+
+  if (src == NULL)
+    return NULL;
+
+  if (dest == NULL)
+    {
+      res = calloc (1, sizeof (entry_obj));
+      if (res == NULL)
+	return NULL;
+    }
+  else
+    res = dest;
+
+  if (src->en_type)
+    res->en_type = strdup (src->en_type);
+  else
+    res->en_type = NULL;
+
+  res->en_cols.en_cols_len = src->en_cols.en_cols_len;
+  if (res->en_cols.en_cols_val == NULL && src->en_cols.en_cols_len > 0)
+    {
+      res->en_cols.en_cols_val =
+	malloc (src->en_cols.en_cols_len * sizeof (entry_col));
+      if (res->en_cols.en_cols_val == NULL)
+	return NULL;
+    }
+  for (i = 0; i < res->en_cols.en_cols_len; ++i)
+    {
+      res->en_cols.en_cols_val[i].ec_flags =
+	src->en_cols.en_cols_val[i].ec_flags;
+      res->en_cols.en_cols_val[i].ec_value.ec_value_len =
+	src->en_cols.en_cols_val[i].ec_value.ec_value_len;
+      if (res->en_cols.en_cols_val[i].ec_value.ec_value_val == NULL &&
+	  src->en_cols.en_cols_val[i].ec_value.ec_value_len > 0)
+	res->en_cols.en_cols_val[i].ec_value.ec_value_val =
+	  malloc (src->en_cols.en_cols_val[i].ec_value.ec_value_len);
+      memcpy (res->en_cols.en_cols_val[i].ec_value.ec_value_val,
+	      src->en_cols.en_cols_val[i].ec_value.ec_value_val,
+	      res->en_cols.en_cols_val[i].ec_value.ec_value_len);
+    }
+
+  return res;
+}
+
+nis_attr *
+nis_clone_nis_attr (const nis_attr *src, nis_attr *dest)
+{
+  nis_attr *res = NULL;
+
+  if (src == NULL)
+    return NULL;
+
+  if (dest == NULL)
+    {
+      res = calloc (1, sizeof (nis_attr));
+      if (res == NULL)
+	return NULL;
+    }
+  else
+    res = dest;
+
+  if (src->zattr_ndx != NULL)
+    {
+      if ((res->zattr_ndx = strdup (src->zattr_ndx)) == NULL)
+        return NULL;
+    }
+  else
+    res->zattr_ndx = NULL;
+
+  res->zattr_val.zattr_val_len = src->zattr_val.zattr_val_len;
+  if (res->zattr_val.zattr_val_val == NULL)
+    {
+      res->zattr_val.zattr_val_val =
+	malloc (src->zattr_val.zattr_val_len);
+      if (res->zattr_val.zattr_val_val == NULL)
+	return NULL;
+    }
+  memcpy (res->zattr_val.zattr_val_val, src->zattr_val.zattr_val_val,
+	  src->zattr_val.zattr_val_len);
+
+  return res;
+}
+
+static nis_attr *
+__nis_clone_attrs (const nis_attr *src, nis_attr *dest, u_int len)
+{
+  unsigned int i;
+  nis_attr *res;
+
+  if (len == 0)
+    return dest;
+
+  if (dest == NULL)
+    {
+      res = calloc (len, sizeof (nis_attr));
+      if (res == NULL)
+	return NULL;
+    }
+  else
+    res = dest;
+
+  for (i = 0; i < len; i++)
+    nis_clone_nis_attr(&src[i], &res[i]);
+
+  return res;
+}
+
+link_obj *
+nis_clone_link (const link_obj *src, link_obj *dest)
+{
+  link_obj *res = NULL;
+
+  if (src == NULL)
+    return NULL;
+
+  if (dest == NULL)
+    {
+      res = calloc (1, sizeof (link_obj));
+      if (res == NULL)
+	return NULL;
+    }
+  else
+    res = dest;
+
+  res->li_rtype = src->li_rtype;
+
+  res->li_attrs.li_attrs_len = src->li_attrs.li_attrs_len;
+  res->li_attrs.li_attrs_val =
+    __nis_clone_attrs (src->li_attrs.li_attrs_val,
+		       res->li_attrs.li_attrs_val,
+		       src->li_attrs.li_attrs_len);
+
+  if ((res->li_name = strdup (src->li_name)) == NULL)
+    return NULL;
+
+  return res;
+}
+
+objdata *
+nis_clone_objdata (const objdata *src, objdata *dest)
+{
+  objdata *res = NULL;
+
+  if (src == NULL)
+    return NULL;
+
+  if (dest == NULL)
+    {
+      res = calloc (1, sizeof (objdata));
+      if (res == NULL)
+	return res;
+    }
+  else
+    res = dest;
+
+  res->zo_type = src->zo_type;
+
+  switch (src->zo_type)
+    {
+    case BOGUS_OBJ:
+      break;
+    case NO_OBJ:
+      break;
+    case DIRECTORY_OBJ:
+      if (nis_clone_directory (&src->objdata_u.di_data,
+			       &res->objdata_u.di_data) == NULL)
+	return NULL;
+      break;
+    case GROUP_OBJ:
+      if (nis_clone_group (&src->objdata_u.gr_data,
+			   &res->objdata_u.gr_data) == NULL)
+	return NULL;
+      break;
+    case TABLE_OBJ:
+      if (nis_clone_table (&src->objdata_u.ta_data,
+			   &res->objdata_u.ta_data) == NULL)
+	return NULL;
+      break;
+    case ENTRY_OBJ:
+      if (nis_clone_entry (&src->objdata_u.en_data,
+			   &res->objdata_u.en_data) == NULL)
+	return NULL;
+      break;
+    case LINK_OBJ:
+      if (nis_clone_link (&src->objdata_u.li_data,
+			  &res->objdata_u.li_data) == NULL)
+	return NULL;
+      break;
+    case PRIVATE_OBJ:
+      res->objdata_u.po_data.po_data_len =
+	src->objdata_u.po_data.po_data_len;
+      if (src->objdata_u.po_data.po_data_val)
+        {
+	  res->objdata_u.po_data.po_data_val =
+	    malloc (res->objdata_u.po_data.po_data_len);
+	  if (res->objdata_u.po_data.po_data_val == NULL)
+	    return NULL;
+	  memcpy (res->objdata_u.po_data.po_data_val,
+		  src->objdata_u.po_data.po_data_val,
+		  src->objdata_u.po_data.po_data_len);
+	  if (res->objdata_u.po_data.po_data_val == NULL)
+	    return NULL;
+        }
+      else
+        {
+	  res->objdata_u.po_data.po_data_val = NULL;
+	  res->objdata_u.po_data.po_data_len = 0;
+        }
+      break;
+    default:
+      return NULL;
+    }
+
+  return res;
+}
+
+nis_object *
+nis_clone_object (const nis_object *src, nis_object *dest)
+{
+  nis_object *res = NULL;
+
+  if (src == NULL)
+    return NULL;
+
+  if (dest == NULL)
+    {
+      res = calloc (1, sizeof (nis_object));
+      if (res == NULL)
+	return NULL;
+    }
+  else
+    res = dest;
+
+  res->zo_oid = src->zo_oid;
+
+  if ((res->zo_name = strdup (src->zo_name)) == NULL)
+    return NULL;
+  if ((res->zo_owner = strdup (src->zo_owner)) == NULL)
+    return NULL;
+  if ((res->zo_group = strdup (src->zo_group)) == NULL)
+    return NULL;
+  if ((res->zo_domain = strdup (src->zo_domain)) == NULL)
+    return NULL;
+
+  res->zo_access = src->zo_access;
+  res->zo_ttl = src->zo_ttl;
+
+  if (nis_clone_objdata (&src->zo_data, &res->zo_data) == NULL)
+    return NULL;
+
+  return res;
+}
+
+static nis_object *
+__nis_clone_objects (const nis_object *src, nis_object *dest, u_int len)
+{
+  unsigned int i;
+  nis_object *res;
+
+  if (len == 0)
+    return dest;
+
+  if (dest == NULL)
+    {
+      res = calloc (len, sizeof (nis_object));
+      if (res == NULL)
+	return NULL;
+    }
+  else
+    res = dest;
+
+  for (i = 0; i < len; ++i)
+    nis_clone_object(&src[i], &res[i]);
+
+  return res;
+}
+
+nis_result *
+nis_clone_result (const nis_result *src, nis_result *dest)
+{
+  nis_result *res = NULL;
+
+  if (src == NULL)
+    return NULL;
+
+  if (dest == NULL)
+    {
+      res = calloc (1, sizeof (nis_result));
+      if (res == NULL)
+	return NULL;
+    }
+  else
+    res = dest;
+
+  res->status = src->status;
+  res->objects.objects_len = src->objects.objects_len;
+  res->objects.objects_val =
+    __nis_clone_objects (src->objects.objects_val,
+			 res->objects.objects_val,
+			 src->objects.objects_len);
+  res->zticks = src->zticks;
+  res->dticks = src->dticks;
+  res->aticks = src->aticks;
+  res->cticks = src->cticks;
+
+  return res;
+}