update from main arcive 961210 cvs/libc-961211

Wed Dec 11 01:04:30 1996  Ulrich Drepper  <drepper@cygnus.com>

	Add NIS NSS implementation.
	* shlib-versions: Add versions for NIS libraries.
	* sysdeps/unix/inet/Subdirs: Add nis.
	* nis/Banner: New file.
	* nis/Makefile: New file.
	* nis/nss-nis.h: New file.
	* nis/yp_xdr.h: New file.
	* nis/ypclnt.h: New file.
	* nis/ypupdate_xdr.c: New file.
	* nis/nss_compat/compat-grp.c: New file.
	* nis/nss_compat/compat-pwd.c: New file.
	* nis/nss_compat/compat-spwd.c: New file.
	* nis/nss_nis/nis-alias.c: New file.
	* nis/nss_nis/nis-ethers.c: New file.
	* nis/nss_nis/nis-grp.c: New file.
	* nis/nss_nis/nis-hosts.c: New file.
	* nis/nss_nis/nis-netgrp.c: New file.
	* nis/nss_nis/nis-network.c: New file.
	* nis/nss_nis/nis-proto.c: New file.
	* nis/nss_nis/nis-publickey.c: New file.
	* nis/nss_nis/nis-pwd.c: New file.
	* nis/nss_nis/nis-rpc.c: New file.
	* nis/nss_nis/nis-service.c: New file.
	* nis/nss_nis/nis-spwd.c: New file.
	* nis/rpcsvc/yp.h: New file.
	* nis/rpcsvc/yp.x: New file.
	* nis/rpcsvc/yp_prot.h: New file.
	* nis/rpcsvc/ypclnt.h: New file.
	* nis/rpcsvc/ypupd.h: New file.

	* libio/_G_config.h: Define _G_HAVE_SYS_WAIT and _G_HAVE_PRINTF_FP.

	* locale/C-numeric.c: Update copyright.

	* locale/Makefile: Add rules to build libBrokenLocale.
	* locale/broken_cur_max.c: New file.
	* locale/mb_cur_max.c: Update copyright.
	(__ctype_get_mb_cur_max): Make function weak.

	* new-malloc/malloc.c: Correct copyright.
	* new-malloc/thread-m.h: Correct key handling.

	* shadow/lckpwdf.c: Update copyright.
	(PWD_LOCKFILE): Change to /etc/.pwd.lock.

	* stdlib/strtod.c: Add another assertion.
	* stdlib/tst-strtod.c: Add another test case.

	* sysdeps/generic/paths.h: Add _PATH_PRESERVE.  Needed by nvi.
	* sysdeps/unix/sysv/linux/paths.h: Likewise.

	* sysdeps/gnu/utmpbits.h: Rename ut_addr field to ut_addr_v6.
	ut_addr names a single element in ut_addr_v6.

	* sysdeps/mach/hurd/xmknod.c: Remove alias from __mknod to mknod.
	Patch by Thomas Bushnell, n/BSG.

Tue Dec 10 11:35:28 1996  Richard Henderson  <rth@tamu.edu>

	* sysdeps/alpha/strncmp.S: Fix aligned short truncated compare
	corner condition.

	* sysdeps/alpha/memchr.S: Don't read ahead, even if the load
	did fit nicely into that delay slot (patch from David Mosberger-Tang).

Mon Dec  9 23:53:43 1996  Thomas Bushnell, n/BSG  <thomas@gnu.ai.mit.edu>

	* sysdeps/mach/hurd/ttyname_r.c (__ttyname_r): Renamed from
	`ttyname_r'.
	(ttyname_r): New alias.

	* stdio-common/printf_fp.c (__guess_grouping): Fix off by one

12 files changed, 3015 insertions, 0 deletions

diff --git a/nis/nss_nis/nis-alias.c b/nis/nss_nis/nis-alias.c
new file mode 100644
index 0000000000..af83d9cd7c
--- /dev/null
+++ b/nis/nss_nis/nis-alias.c
@@ -0,0 +1,269 @@
+/* Copyright (C) 1996 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Thorsten Kukuk <kukuk@vt.uni-paderborn.de>, 1996.
+
+   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 <nss.h>
+#include <ctype.h>
+#include <errno.h>
+#include <string.h>
+#include <aliases.h>
+#include <libc-lock.h>
+#include <rpcsvc/yp.h>
+#include <rpcsvc/ypclnt.h>
+
+#include "nss-nis.h"
+
+__libc_lock_define_initialized (static, lock)
+
+static bool_t new_start = 1;
+static char *oldkey = NULL;
+static int oldkeylen = 0;
+
+static int
+_nss_nis_parse_aliasent (char *key, char *alias, struct aliasent *result,
+			 char *buffer, size_t buflen)
+{
+  char *first_unused = buffer + strlen (alias) + 1;
+  size_t room_left =
+    buflen - (buflen % __alignof__ (char *)) - strlen (alias) - 2;
+  char *line;
+  char *cp;
+
+  result->alias_members_len = 0;
+  *first_unused = '\0';
+  first_unused++;
+  strcpy (first_unused, key);
+
+  if (first_unused[room_left - 1] != '\0')
+    {
+      /* The line is too long for our buffer.  */
+    no_more_room:
+      __set_errno (ERANGE);
+      return -1;
+    }
+
+  result->alias_name = first_unused;
+
+  /* Terminate the line for any case.  */
+  cp = strpbrk (alias, "#\n");
+  if (cp != NULL)
+    *cp = '\0';
+
+  first_unused += strlen (result->alias_name) + 1;
+  /* Adjust the pointer so it is aligned for
+     storing pointers.  */
+  first_unused += __alignof__ (char *) - 1;
+  first_unused -= ((first_unused - (char *) 0) % __alignof__ (char *));
+  result->alias_members = (char **) first_unused;
+
+  line = alias;
+
+  while (*line != '\0')
+    {
+      /* Skip leading blanks.  */
+      while (isspace (*line))
+	line++;
+
+      if (*line == '\0')
+	break;
+
+      if (room_left < sizeof (char *))
+	  goto no_more_room;
+      room_left -= sizeof (char *);
+      result->alias_members[result->alias_members_len] = line;
+
+      while (*line != '\0' && *line != ',')
+	line++;
+
+      if (line != result->alias_members[result->alias_members_len])
+	{
+	  *line = '\0';
+	  line++;
+	  result->alias_members_len++;
+	}
+    }
+  return result->alias_members_len == 0 ? 0 : 1;
+}
+
+enum nss_status
+_nss_nis_setaliasent (void)
+{
+  __libc_lock_lock (lock);
+
+  new_start = 1;
+  if (oldkey != NULL)
+    {
+      free (oldkey);
+      oldkey = NULL;
+      oldkeylen = 0;
+    }
+
+  __libc_lock_unlock (lock);
+
+  return NSS_STATUS_SUCCESS;
+}
+
+enum nss_status
+_nss_nis_endaliasent (void)
+{
+  __libc_lock_lock (lock);
+
+  new_start = 1;
+  if (oldkey != NULL)
+    {
+      free (oldkey);
+      oldkey = NULL;
+      oldkeylen = 0;
+    }
+
+  __libc_lock_unlock (lock);
+
+  return NSS_STATUS_SUCCESS;
+}
+
+static enum nss_status
+internal_nis_getaliasent_r (struct aliasent *alias, char *buffer,
+			    size_t buflen)
+{
+  char *domain;
+  char *result;
+  int len;
+  char *outkey;
+  int keylen;
+  char *p;
+  int parse_res;
+
+  if (yp_get_default_domain (&domain))
+    return NSS_STATUS_UNAVAIL;
+
+  alias->alias_local = 0;
+
+  /* Get the next entry until we found a correct one. */
+  do
+    {
+      enum nss_status retval;
+
+      if (new_start)
+        retval = yperr2nss (yp_first (domain, "mail.aliases",
+				      &outkey, &keylen, &result, &len));
+      else
+        retval = yperr2nss ( yp_next (domain, "mail.aliases", oldkey,
+				      oldkeylen, &outkey, &keylen,
+				      &result, &len));
+      if (retval != NSS_STATUS_SUCCESS)
+	{
+	  if (retval == NSS_STATUS_TRYAGAIN)
+            __set_errno (EAGAIN);
+          return retval;
+        }
+
+      if (len + 1 > buflen)
+        {
+	  free (result);
+          __set_errno (ERANGE);
+          return NSS_STATUS_TRYAGAIN;
+        }
+      p = strncpy (buffer, result, len);
+      buffer[len] = '\0';
+      while (isspace (*p))
+        ++p;
+      free (result);
+
+      parse_res = _nss_nis_parse_aliasent (outkey, p, alias, buffer, buflen);
+      if (parse_res == -1)
+	{
+	  __set_errno (ERANGE);
+	  return NSS_STATUS_TRYAGAIN;
+	}
+
+      free (oldkey);
+      oldkey = outkey;
+      oldkeylen = keylen;
+      new_start = 0;
+    }
+  while (!parse_res);
+
+  return NSS_STATUS_SUCCESS;
+}
+
+enum nss_status
+_nss_nis_getaliasent_r (struct aliasent *alias, char *buffer, size_t buflen)
+{
+  enum nss_status status;
+
+  __libc_lock_lock (lock);
+
+  status = internal_nis_getaliasent_r (alias, buffer, buflen);
+
+  __libc_lock_unlock (lock);
+
+  return status;
+}
+
+enum nss_status
+_nss_nis_getaliasbyname_r (const char *name, struct aliasent *alias,
+			   char *buffer, size_t buflen)
+{
+  enum nss_status retval;
+  int parse_res;
+  char *domain;
+  char *result;
+  int len;
+  char *p;
+
+  if (name == NULL)
+    {
+      __set_errno (EINVAL);
+      return NSS_STATUS_UNAVAIL;
+    }
+
+  if (yp_get_default_domain (&domain))
+    return NSS_STATUS_UNAVAIL;
+
+  retval = yperr2nss (yp_match (domain, "mail.aliases", name, strlen (name),
+				&result, &len));
+  if (retval != NSS_STATUS_SUCCESS)
+    {
+      if (retval == NSS_STATUS_TRYAGAIN)
+	__set_errno (EAGAIN);
+      return retval;
+    }
+
+  if (len + 1 > buflen)
+    {
+      free (result);
+      __set_errno (ERANGE);
+      return NSS_STATUS_TRYAGAIN;
+    }
+
+  p = strncpy (buffer, result, len);
+  buffer[len] = '\0';
+  while (isspace (*p))
+    ++p;
+  free (result);
+
+  alias->alias_local = 0;
+  parse_res = _nss_nis_parse_aliasent (name, p, alias, buffer, buflen);
+  if (parse_res == -1)
+    return NSS_STATUS_TRYAGAIN;
+  else
+    if (parse_res == 0)
+      return NSS_STATUS_NOTFOUND;
+    else
+      return NSS_STATUS_SUCCESS;
+}
diff --git a/nis/nss_nis/nis-ethers.c b/nis/nss_nis/nis-ethers.c
new file mode 100644
index 0000000000..26449720bb
--- /dev/null
+++ b/nis/nss_nis/nis-ethers.c
@@ -0,0 +1,264 @@
+/* Copyright (C) 1996 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Thorsten Kukuk <kukuk@vt.uni-paderborn.de>, 1996.
+
+   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 <nss.h>
+#include <ctype.h>
+#include <errno.h>
+#include <string.h>
+#include <libc-lock.h>
+#include <rpcsvc/yp.h>
+#include <rpcsvc/ypclnt.h>
+#include <netinet/if_ether.h>
+
+#include "nss-nis.h"
+
+/* Protect global state against multiple changers */
+__libc_lock_define_initialized (static, lock)
+
+struct ether
+{
+  char *e_name;
+  struct ether_addr e_addr;
+};
+
+static bool_t new_start = 1;
+static char *oldkey = NULL;
+static int oldkeylen = 0;
+
+enum nss_status
+_nss_nis_setetherent (void)
+{
+  __libc_lock_lock (lock);
+
+  new_start = 1;
+  if (oldkey != NULL)
+    {
+      free (oldkey);
+      oldkey = NULL;
+      oldkeylen = 0;
+    }
+
+  __libc_lock_unlock (lock);
+
+  return NSS_STATUS_SUCCESS;
+}
+
+enum nss_status
+_nss_nis_endetherent (void)
+{
+  __libc_lock_lock (lock);
+
+  new_start = 1;
+  if (oldkey != NULL)
+    {
+      free (oldkey);
+      oldkey = NULL;
+      oldkeylen = 0;
+    }
+
+  __libc_lock_unlock (lock);
+
+  return NSS_STATUS_SUCCESS;
+}
+
+static enum nss_status
+internal_nis_getetherent_r (struct ether *eth, char *buffer, size_t buflen)
+{
+  char *domain, *result, *outkey;
+  int len, keylen, parse_res;
+
+  if (yp_get_default_domain (&domain))
+    return NSS_STATUS_UNAVAIL;
+
+  /* Get the next entry until we found a correct one. */
+  do
+    {
+      enum nss_status retval;
+      char *p;
+
+      if (new_start)
+        retval = yperr2nss (yp_first (domain, "ethers.byaddr",
+                                      &outkey, &keylen, &result, &len));
+      else
+        retval = yperr2nss ( yp_next (domain, "ethers.byaddr",
+                                      oldkey, oldkeylen,
+                                      &outkey, &keylen, &result, &len));
+
+      if (retval != NSS_STATUS_SUCCESS)
+        {
+          if (retval == NSS_STATUS_TRYAGAIN)
+            __set_errno (EAGAIN);
+          return retval;
+        }
+
+      if (len + 1 > buflen)
+        {
+          free (result);
+          __set_errno (ERANGE);
+          return NSS_STATUS_TRYAGAIN;
+        }
+
+      p = strncpy (buffer, result, len);
+      buffer[len] = '\0';
+      while (isspace (*p))
+        ++p;
+      free (result);
+
+      parse_res = _nss_files_parse_etherent (p, eth, buffer, buflen);
+      if (!parse_res && errno == ERANGE)
+        return NSS_STATUS_TRYAGAIN;
+
+      free (oldkey);
+      oldkey = outkey;
+      oldkeylen = keylen;
+      new_start = 0;
+    }
+  while (!parse_res);
+
+  return NSS_STATUS_SUCCESS;
+}
+
+enum nss_status
+_nss_nis_getetherent_r (struct ether *result, char *buffer, size_t buflen)
+{
+  int status;
+
+  __libc_lock_lock (lock);
+
+  status = internal_nis_getetherent_r (result, buffer, buflen);
+
+  __libc_lock_unlock (lock);
+
+  return status;
+}
+
+enum nss_status
+_nss_nis_getethernam_r (const char *name, struct ether *eth,
+			char *buffer, size_t buflen)
+{
+  enum nss_status retval;
+  char *domain, *result, *p;
+  int len, parse_res;
+
+  if (name == NULL)
+    {
+      __set_errno (EINVAL);
+      return NSS_STATUS_UNAVAIL;
+    }
+
+  if (yp_get_default_domain (&domain))
+    return NSS_STATUS_UNAVAIL;
+
+  retval = yperr2nss (yp_match (domain, "ethers.byname", name,
+				strlen (name), &result, &len));
+
+  if (retval != NSS_STATUS_SUCCESS)
+    {
+      if (retval == NSS_STATUS_TRYAGAIN)
+        __set_errno (EAGAIN);
+      return retval;
+    }
+
+  if (len + 1 > buflen)
+    {
+      free (result);
+      __set_errno (ERANGE);
+      return NSS_STATUS_TRYAGAIN;
+    }
+
+  p = strncpy (buffer, result, len);
+  buffer[len] = '\0';
+  while (isspace (*p))
+    ++p;
+  free (result);
+
+  parse_res = _nss_files_parse_etherent (p, eth, buffer, buflen);
+
+  if (!parse_res)
+    {
+      if (errno == ERANGE)
+        return NSS_STATUS_TRYAGAIN;
+      else
+        return NSS_STATUS_NOTFOUND;
+    }
+  else
+    return NSS_STATUS_SUCCESS;
+}
+
+enum nss_status
+_nss_nis_getetherbyaddr_r (struct ether_addr *addr, struct ether *eth,
+			   char *buffer, size_t buflen)
+{
+  enum nss_status retval;
+  char *domain, *result, *p;
+  int len, nlen, parse_res;
+  char buf[33];
+
+  if (addr == NULL)
+    {
+      __set_errno (EINVAL);
+      return NSS_STATUS_UNAVAIL;
+    }
+
+  if (yp_get_default_domain (&domain))
+    return NSS_STATUS_UNAVAIL;
+
+  nlen = sprintf (buf, "%x:%x:%x:%x:%x:%x",
+		  (int) addr->ether_addr_octet[0],
+		  (int) addr->ether_addr_octet[1],
+		  (int) addr->ether_addr_octet[2],
+		  (int) addr->ether_addr_octet[3],
+		  (int) addr->ether_addr_octet[4],
+		  (int) addr->ether_addr_octet[5]);
+
+  retval = yperr2nss (yp_match (domain, "ethers.byaddr", buf,
+				nlen, &result, &len));
+
+  if (retval != NSS_STATUS_SUCCESS)
+    {
+      if (retval == NSS_STATUS_TRYAGAIN)
+        __set_errno (EAGAIN);
+      return retval;
+    }
+
+  if (len + 1 > buflen)
+    {
+      free (result);
+      __set_errno (ERANGE);
+      return NSS_STATUS_TRYAGAIN;
+    }
+
+  p = strncpy (buffer, result, len);
+  buffer[len] = '\0';
+  while (isspace (*p))
+    ++p;
+  free (result);
+
+  parse_res = _nss_files_parse_etherent (p, eth, buffer, buflen);
+
+  if (!parse_res)
+    {
+      if (errno == ERANGE)
+        return NSS_STATUS_TRYAGAIN;
+      else
+        return NSS_STATUS_NOTFOUND;
+    }
+  else
+    return NSS_STATUS_SUCCESS;
+}
diff --git a/nis/nss_nis/nis-grp.c b/nis/nss_nis/nis-grp.c
new file mode 100644
index 0000000000..1bab862c2f
--- /dev/null
+++ b/nis/nss_nis/nis-grp.c
@@ -0,0 +1,246 @@
+/* Copyright (C) 1996 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Thorsten Kukuk <kukuk@vt.uni-paderborn.de>, 1996.
+
+   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 <nss.h>
+#include <grp.h>
+#include <ctype.h>
+#include <errno.h>
+#include <string.h>
+#include <libc-lock.h>
+#include <rpcsvc/yp.h>
+#include <rpcsvc/ypclnt.h>
+
+#include "nss-nis.h"
+
+/* Protect global state against multiple changers */
+__libc_lock_define_initialized (static, lock)
+
+static bool_t new_start = 1;
+static char *oldkey = NULL;
+static int oldkeylen = 0;
+
+enum nss_status
+_nss_nis_setgrent (void)
+{
+  __libc_lock_lock (lock);
+
+  new_start = 1;
+  if (oldkey != NULL)
+    {
+      free (oldkey);
+      oldkey = NULL;
+      oldkeylen = 0;
+    }
+
+  __libc_lock_unlock (lock);
+
+  return NSS_STATUS_SUCCESS;
+}
+
+enum nss_status
+_nss_nis_endgrent (void)
+{
+  __libc_lock_lock (lock);
+
+  new_start = 1;
+  if (oldkey != NULL)
+    {
+      free (oldkey);
+      oldkey = NULL;
+      oldkeylen = 0;
+    }
+
+  __libc_lock_unlock (lock);
+
+  return NSS_STATUS_SUCCESS;
+}
+
+static enum nss_status
+internal_nis_getgrent_r (struct group *grp, char *buffer, size_t buflen)
+{
+  char *domain, *result, *outkey;
+  int len, keylen, parse_res;
+
+  if (yp_get_default_domain (&domain))
+    return NSS_STATUS_UNAVAIL;
+
+  /* Get the next entry until we found a correct one. */
+  do
+    {
+      enum nss_status retval;
+      char *p;
+
+      if (new_start)
+        retval = yperr2nss (yp_first (domain, "group.byname",
+                                      &outkey, &keylen, &result, &len));
+      else
+        retval = yperr2nss ( yp_next (domain, "group.byname",
+                                      oldkey, oldkeylen,
+                                      &outkey, &keylen, &result, &len));
+
+      if (retval != NSS_STATUS_SUCCESS)
+        {
+          if (retval == NSS_STATUS_TRYAGAIN)
+            __set_errno (EAGAIN);
+          return retval;
+        }
+
+      if (len + 1 > buflen)
+        {
+          free (result);
+          __set_errno (ERANGE);
+          return NSS_STATUS_TRYAGAIN;
+        }
+
+      p = strncpy (buffer, result, len);
+      buffer[len] = '\0';
+      while (isspace (*p))
+        ++p;
+      free (result);
+
+      parse_res = _nss_files_parse_grent (p, grp, buffer, buflen);
+      if (!parse_res && errno == ERANGE)
+        return NSS_STATUS_TRYAGAIN;
+
+      free (oldkey);
+      oldkey = outkey;
+      oldkeylen = keylen;
+      new_start = 0;
+    }
+  while (!parse_res);
+
+  return NSS_STATUS_SUCCESS;
+}
+
+enum nss_status
+_nss_nis_getgrent_r (struct group *result, char *buffer, size_t buflen)
+{
+  int status;
+
+  __libc_lock_lock (lock);
+
+  status = internal_nis_getgrent_r (result, buffer, buflen);
+
+  __libc_lock_unlock (lock);
+
+  return status;
+}
+
+enum nss_status
+_nss_nis_getgrnam_r (const char *name, struct group *grp,
+		     char *buffer, size_t buflen)
+{
+  enum nss_status retval;
+  char *domain, *result, *p;
+  int len, parse_res;
+
+  if (name == NULL)
+    {
+      __set_errno (EINVAL);
+      return NSS_STATUS_UNAVAIL;
+    }
+
+  if (yp_get_default_domain (&domain))
+    return NSS_STATUS_UNAVAIL;
+
+  retval = yperr2nss (yp_match (domain, "group.byname", name,
+				strlen (name), &result, &len));
+
+  if (retval != NSS_STATUS_SUCCESS)
+    {
+      if (retval == NSS_STATUS_TRYAGAIN)
+        __set_errno (EAGAIN);
+      return retval;
+    }
+
+  if (len + 1 > buflen)
+    {
+      free (result);
+      __set_errno (ERANGE);
+      return NSS_STATUS_TRYAGAIN;
+    }
+
+  p = strncpy (buffer, result, len);
+  buffer[len] = '\0';
+  while (isspace (*p))
+    ++p;
+  free (result);
+
+  parse_res = _nss_files_parse_grent (p, grp, buffer, buflen);
+
+  if (!parse_res)
+    {
+      if (errno == ERANGE)
+        return NSS_STATUS_TRYAGAIN;
+      else
+        return NSS_STATUS_NOTFOUND;
+    }
+  else
+    return NSS_STATUS_SUCCESS;
+}
+
+enum nss_status
+_nss_nis_getgrgid_r (gid_t gid, struct group *grp,
+		     char *buffer, size_t buflen)
+{
+  enum nss_status retval;
+  char *domain, *result, *p;
+  int len, nlen, parse_res;
+  char buf[32];
+
+  if (yp_get_default_domain (&domain))
+    return NSS_STATUS_UNAVAIL;
+
+  nlen = sprintf (buf, "%d", gid);
+
+  retval = yperr2nss (yp_match (domain, "group.bygid", buf,
+				nlen, &result, &len));
+
+  if (retval != NSS_STATUS_SUCCESS)
+    {
+      if (retval == NSS_STATUS_TRYAGAIN)
+        __set_errno (EAGAIN);
+      return retval;
+    }
+
+  if (len + 1 > buflen)
+    {
+      free (result);
+      __set_errno (ERANGE);
+      return NSS_STATUS_TRYAGAIN;
+    }
+
+  p = strncpy (buffer, result, len);
+  buffer[len] = '\0';
+  while (isspace (*p))
+    ++p;
+  free (result);
+
+  parse_res = _nss_files_parse_grent (p, grp, buffer, buflen);
+
+  if (!parse_res)
+    {
+      if (errno == ERANGE)
+        return NSS_STATUS_TRYAGAIN;
+      else
+        return NSS_STATUS_NOTFOUND;
+    }
+  else
+    return NSS_STATUS_SUCCESS;
+}
diff --git a/nis/nss_nis/nis-hosts.c b/nis/nss_nis/nis-hosts.c
new file mode 100644
index 0000000000..9adce18ca3
--- /dev/null
+++ b/nis/nss_nis/nis-hosts.c
@@ -0,0 +1,389 @@
+/* Copyright (C) 1996 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Thorsten Kukuk <kukuk@vt.uni-paderborn.de>, 1996.
+
+   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 <nss.h>
+#include <ctype.h>
+#include <netdb.h>
+#include <string.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <resolv.h>
+#include <libc-lock.h>
+#include <rpcsvc/yp.h>
+#include <rpcsvc/ypclnt.h>
+
+#include "nss-nis.h"
+
+/* Get implementation for some internal functions. */
+#include "../../resolv/mapv4v6addr.h"
+#include "../../resolv/mapv4v6hostent.h"
+
+#define ENTNAME         hostent
+#define DATABASE        "hosts"
+#define NEED_H_ERRNO
+
+#define ENTDATA hostent_data
+struct hostent_data
+  {
+    unsigned char host_addr[16];	/* IPv4 or IPv6 address.  */
+    char *h_addr_ptrs[2];	/* Points to that and null terminator.  */
+  };
+
+#define TRAILING_LIST_MEMBER            h_aliases
+#define TRAILING_LIST_SEPARATOR_P       isspace
+#include "../../nss/nss_files/files-parse.c"
+LINE_PARSER
+("#",
+ {
+   char *addr;
+
+   STRING_FIELD (addr, isspace, 1);
+
+   /* Parse address.  */
+   if ((_res.options & RES_USE_INET6)
+       && inet_pton (AF_INET6, addr, entdata->host_addr) > 0)
+     {
+       result->h_addrtype = AF_INET6;
+       result->h_length = IN6ADDRSZ;
+     }
+   else
+     if (inet_pton (AF_INET, addr, entdata->host_addr) > 0)
+       {
+	 if (_res.options & RES_USE_INET6)
+	   {
+	     map_v4v6_address ((char *) entdata->host_addr,
+			       (char *) entdata->host_addr);
+	     result->h_addrtype = AF_INET6;
+	     result->h_length = IN6ADDRSZ;
+	   }
+	 else
+	   {
+	     result->h_addrtype = AF_INET;
+	     result->h_length = INADDRSZ;
+	   }
+       }
+     else
+       /* Illegal address: ignore line.  */
+       return 0;
+
+   /* Store a pointer to the address in the expected form.  */
+   entdata->h_addr_ptrs[0] = entdata->host_addr;
+   entdata->h_addr_ptrs[1] = NULL;
+   result->h_addr_list = entdata->h_addr_ptrs;
+
+   /* If we need the host entry in IPv6 form change it now.  */
+   if (_res.options & RES_USE_INET6)
+     {
+       char *bufptr = data->linebuffer;
+       size_t buflen = (char *) data + datalen - bufptr;
+       map_v4v6_hostent (result, &bufptr, &buflen);
+     }
+
+   STRING_FIELD (result->h_name, isspace, 1);
+ }
+)
+
+__libc_lock_define_initialized (static, lock)
+
+static bool_t new_start = 1;
+static char *oldkey = NULL;
+static int oldkeylen = 0;
+
+enum nss_status
+_nss_nis_sethostent (void)
+{
+  __libc_lock_lock (lock);
+
+  new_start = 1;
+  if (oldkey != NULL)
+    {
+      free (oldkey);
+      oldkey = NULL;
+      oldkeylen = 0;
+    }
+
+  __libc_lock_unlock (lock);
+
+  return NSS_STATUS_SUCCESS;
+}
+
+enum nss_status
+_nss_nis_endhostent (void)
+{
+  __libc_lock_lock (lock);
+
+  new_start = 1;
+  if (oldkey != NULL)
+    {
+      free (oldkey);
+      oldkey = NULL;
+      oldkeylen = 0;
+    }
+
+  __libc_lock_unlock (lock);
+
+  return NSS_STATUS_SUCCESS;
+}
+
+static enum nss_status
+internal_nis_gethostent_r (struct hostent *host, char *buffer,
+			   size_t buflen, int *h_errnop)
+{
+  char *domain;
+  char *result;
+  int len, parse_res;
+  char *outkey;
+  int keylen;
+  struct parser_data *data = (void *) buffer;
+  size_t linebuflen = buffer + buflen - data->linebuffer;
+
+  if (yp_get_default_domain (&domain))
+    return NSS_STATUS_UNAVAIL;
+
+  if (buflen < sizeof *data + 1)
+    {
+      __set_errno (ERANGE);
+      *h_errnop = NETDB_INTERNAL;
+      return NSS_STATUS_TRYAGAIN;
+    }
+
+  /* Get the next entry until we found a correct one. */
+  do
+    {
+      enum nss_status retval;
+      char *p;
+
+      if (new_start)
+        retval = yperr2nss (yp_first (domain, "hosts.byname",
+                                      &outkey, &keylen, &result, &len));
+      else
+        retval = yperr2nss ( yp_next (domain, "hosts.byname",
+                                      oldkey, oldkeylen,
+                                      &outkey, &keylen, &result, &len));
+
+      if (retval != NSS_STATUS_SUCCESS)
+        {
+	  switch (retval)
+	    {
+	    case NSS_STATUS_TRYAGAIN:
+	      __set_errno (EAGAIN);
+	      *h_errnop = TRY_AGAIN;
+	      break;
+	    case NSS_STATUS_NOTFOUND:
+	      *h_errnop = HOST_NOT_FOUND;
+	      break;
+	    default:
+	      *h_errnop = NO_RECOVERY;
+	      break;
+	    }
+	  return retval;
+	}
+
+      if (len + 1 > linebuflen)
+        {
+          free (result);
+	  *h_errnop = NETDB_INTERNAL;
+          __set_errno (ERANGE);
+          return NSS_STATUS_TRYAGAIN;
+        }
+
+      p = strncpy (data->linebuffer, result, len);
+      data->linebuffer[len] = '\0';
+      while (isspace (*p))
+	++p;
+      free (result);
+
+      parse_res = parse_line (p, host, data, buflen);
+      if (!parse_res && errno == ERANGE)
+	{
+	  *h_errnop = NETDB_INTERNAL;;
+	  return NSS_STATUS_TRYAGAIN;
+	}
+      free (oldkey);
+      oldkey = outkey;
+      oldkeylen = keylen;
+      new_start = 0;
+    }
+  while (!parse_res);
+
+  *h_errnop = NETDB_SUCCESS;
+  return NSS_STATUS_SUCCESS;
+}
+
+int
+_nss_nis_gethostent_r (struct hostent *host, char *buffer, size_t buflen,
+		       int *h_errnop)
+{
+  int status;
+
+  __libc_lock_lock (lock);
+
+  status = internal_nis_gethostent_r (host, buffer, buflen, h_errnop);
+
+  __libc_lock_unlock (lock);
+
+  return status;
+}
+
+enum nss_status
+_nss_nis_gethostbyname_r (const char *name, struct hostent *host,
+			  char *buffer, size_t buflen, int *h_errnop)
+{
+  enum nss_status retval;
+  char *domain, *result, *p;
+  int len, parse_res;
+  struct parser_data *data = (void *) buffer;
+  size_t linebuflen = buffer + buflen - data->linebuffer;
+
+  if (name == NULL)
+    {
+      __set_errno (EINVAL);
+      return NSS_STATUS_UNAVAIL;
+    }
+
+  if (yp_get_default_domain (&domain))
+    return NSS_STATUS_UNAVAIL;
+
+  if (buflen < sizeof *data + 1)
+    {
+      *h_errnop = NETDB_INTERNAL;
+      __set_errno (ERANGE);
+      return NSS_STATUS_TRYAGAIN;
+    }
+  retval = yperr2nss (yp_match (domain, "hosts.byname", name,
+                                strlen (name), &result, &len));
+
+  if (retval != NSS_STATUS_SUCCESS)
+    {
+      if (retval == NSS_STATUS_TRYAGAIN)
+	{
+	  *h_errnop = TRY_AGAIN;
+	  __set_errno (EAGAIN);
+	}
+      if (retval == NSS_STATUS_NOTFOUND)
+	*h_errnop = HOST_NOT_FOUND;
+      return retval;
+    }
+
+  if (len + 1 > linebuflen)
+    {
+      free (result);
+      *h_errnop = NETDB_INTERNAL;
+      __set_errno (ERANGE);
+      return NSS_STATUS_TRYAGAIN;
+    }
+
+  p = strncpy (data->linebuffer, result, len);
+  data->linebuffer[len] = '\0';
+  while (isspace (*p))
+    ++p;
+  free (result);
+
+  parse_res = parse_line (p, host, data, buflen);
+
+  if (!parse_res)
+    {
+      if (errno == ERANGE)
+	{
+	  *h_errnop = NETDB_INTERNAL;
+	  return NSS_STATUS_TRYAGAIN;
+	}
+      else
+	{
+	  *h_errnop = HOST_NOT_FOUND;
+	  return NSS_STATUS_NOTFOUND;
+	}
+    }
+
+  *h_errnop = NETDB_SUCCESS;
+  return NSS_STATUS_SUCCESS;
+}
+
+enum nss_status
+_nss_nis_gethostbyaddr_r (char *addr, int addrlen, int type,
+			  struct hostent *host, char *buffer, size_t buflen,
+			  int *h_errnop)
+{
+  enum nss_status retval;
+  char *domain, *result, *p;
+  int len, parse_res;
+  char *buf;
+  struct parser_data *data = (void *) buffer;
+  size_t linebuflen = buffer + buflen - data->linebuffer;
+
+  if (yp_get_default_domain (&domain))
+    return NSS_STATUS_UNAVAIL;
+
+  if (buflen < sizeof *data + 1)
+    {
+      __set_errno (ERANGE);
+      *h_errnop = NETDB_INTERNAL;
+      return NSS_STATUS_TRYAGAIN;
+    }
+
+  buf = inet_ntoa (*(struct in_addr *) addr);
+
+  retval = yperr2nss (yp_match (domain, "hosts.byaddr", buf,
+                                strlen (buf), &result, &len));
+
+  if (retval != NSS_STATUS_SUCCESS)
+    {
+      if (retval == NSS_STATUS_TRYAGAIN)
+	{
+	  *h_errnop = TRY_AGAIN;
+	  __set_errno (EAGAIN);
+	}
+      if (retval == NSS_STATUS_NOTFOUND)
+	*h_errnop = HOST_NOT_FOUND;
+      return retval;
+    }
+
+  if (len + 1 > linebuflen)
+    {
+      free (result);
+      __set_errno (ERANGE);
+      *h_errnop = NETDB_INTERNAL;
+      return NSS_STATUS_TRYAGAIN;
+    }
+
+  p = strncpy (data->linebuffer, result, len);
+  data->linebuffer[len] = '\0';
+  while (isspace (*p))
+    ++p;
+  free (result);
+
+  parse_res = parse_line (p, host, data, buflen);
+
+  if (!parse_res)
+    {
+      if (errno == ERANGE)
+	{
+	  *h_errnop = NETDB_INTERNAL;
+	  return NSS_STATUS_TRYAGAIN;
+	}
+      else
+	{
+	  *h_errnop = HOST_NOT_FOUND;
+	  return NSS_STATUS_NOTFOUND;
+	}
+    }
+
+  *h_errnop = NETDB_SUCCESS;
+  return NSS_STATUS_SUCCESS;
+}
diff --git a/nis/nss_nis/nis-netgrp.c b/nis/nss_nis/nis-netgrp.c
new file mode 100644
index 0000000000..7609ea08ed
--- /dev/null
+++ b/nis/nss_nis/nis-netgrp.c
@@ -0,0 +1,128 @@
+/* Copyright (C) 1996 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Thorsten Kukuk <kukuk@vt.uni-paderborn.de>, 1996.
+
+   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 <nss.h>
+#include <ctype.h>
+#include <errno.h>
+#include <libc-lock.h>
+#include <netdb.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <netgroup.h>
+#include <rpcsvc/yp.h>
+#include <rpcsvc/ypclnt.h>
+
+#include "nss-nis.h"
+
+/* Locks the static variables in this file.  */
+__libc_lock_define_initialized (static, lock)
+
+static char *data = NULL;
+static size_t data_size = 0;
+static char *cursor = NULL;;
+
+extern enum nss_status
+_nss_netgroup_parseline (char **cursor, struct __netgrent *result,
+			 char *buffer, size_t buflen);
+
+enum nss_status
+_nss_nis_setnetgrent (char *group)
+{
+  char *domain;
+  char *result;
+  int len, group_len;
+  enum nss_status status;
+
+  status = NSS_STATUS_SUCCESS;
+
+  if (group[0] == '\0')
+    return NSS_STATUS_UNAVAIL;
+
+  if (yp_get_default_domain (&domain))
+    return NSS_STATUS_UNAVAIL;
+
+  __libc_lock_lock (lock);
+
+  if (data != NULL)
+    {
+      free (data);
+      data = NULL;
+      data_size = 0;
+      cursor = NULL;
+    }
+
+  group_len = strlen (group);
+
+  status = yperr2nss (yp_match (domain, "netgroup", group, group_len,
+				&result, &len));
+  if (status == NSS_STATUS_SUCCESS)
+    {
+      if (len > 0)
+	{
+	  data = malloc (len + 1);
+	  data_size = len;
+	  cursor = strncpy (data, result, len + 1);
+	  data[len] = '\0';
+	  free (result);
+	}
+      else
+	status = NSS_STATUS_NOTFOUND;
+    }
+
+  __libc_lock_unlock (lock);
+
+  return status;
+}
+
+
+enum nss_status
+_nss_nis_endnetgrent (void)
+{
+  __libc_lock_lock (lock);
+
+  if (data != NULL)
+    {
+      free (data);
+      data = NULL;
+      data_size = 0;
+      cursor = NULL;
+    }
+
+  __libc_lock_unlock (lock);
+
+  return NSS_STATUS_SUCCESS;
+}
+
+enum nss_status
+_nss_nis_getnetgrent_r (struct __netgrent *result, char *buffer, size_t buflen)
+{
+  enum nss_status status;
+
+  if (cursor == NULL)
+    return NSS_STATUS_NOTFOUND;
+
+  __libc_lock_lock (lock);
+
+  status = _nss_netgroup_parseline (&cursor, result, buffer, buflen);
+
+  __libc_lock_unlock (lock);
+
+  return status;
+}
diff --git a/nis/nss_nis/nis-network.c b/nis/nss_nis/nis-network.c
new file mode 100644
index 0000000000..2795feb421
--- /dev/null
+++ b/nis/nss_nis/nis-network.c
@@ -0,0 +1,292 @@
+/* Copyright (C) 1996 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Thorsten Kukuk <kukuk@vt.uni-paderborn.de>, 1996.
+
+   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 <nss.h>
+#include <netdb.h>
+#include <ctype.h>
+#include <errno.h>
+#include <string.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <libc-lock.h>
+#include <rpcsvc/yp.h>
+#include <rpcsvc/ypclnt.h>
+
+#include "nss-nis.h"
+
+__libc_lock_define_initialized (static, lock)
+
+static bool_t new_start = 1;
+static char *oldkey = NULL;
+static int oldkeylen = 0;
+
+enum nss_status
+_nss_nis_setnetent (void)
+{
+  __libc_lock_lock (lock);
+
+  new_start = 1;
+  if (oldkey != NULL)
+    {
+      free (oldkey);
+      oldkey = NULL;
+      oldkeylen = 0;
+    }
+
+  __libc_lock_unlock (lock);
+
+  return NSS_STATUS_SUCCESS;
+}
+
+enum nss_status
+_nss_nis_endnetent (void)
+{
+  __libc_lock_lock (lock);
+
+  new_start = 1;
+  if (oldkey != NULL)
+    {
+      free (oldkey);
+      oldkey = NULL;
+      oldkeylen = 0;
+    }
+
+  __libc_lock_unlock (lock);
+
+  return NSS_STATUS_SUCCESS;
+}
+
+static enum nss_status
+internal_nis_getnetent_r (struct netent *net, char *buffer, size_t buflen,
+			  int *herrnop)
+{
+  char *domain, *result, *outkey;
+  int len, keylen, parse_res;
+
+  if (yp_get_default_domain (&domain))
+    return NSS_STATUS_UNAVAIL;
+
+  /* Get the next entry until we found a correct one. */
+  do
+    {
+      enum nss_status retval;
+      char *p;
+
+      if (new_start)
+        retval = yperr2nss (yp_first (domain, "networks.byname",
+                                      &outkey, &keylen, &result, &len));
+      else
+        retval = yperr2nss ( yp_next (domain, "networks.byname",
+                                      oldkey, oldkeylen,
+                                      &outkey, &keylen, &result, &len));
+
+      if (retval != NSS_STATUS_SUCCESS)
+        {
+          if (retval == NSS_STATUS_TRYAGAIN)
+	    {
+	      *herrnop = NETDB_INTERNAL;
+	      __set_errno (EAGAIN);
+	    }
+          return retval;
+        }
+
+      if (len + 1 > buflen)
+        {
+          free (result);
+          __set_errno (ERANGE);
+	  *herrnop = NETDB_INTERNAL;
+          return NSS_STATUS_TRYAGAIN;
+        }
+
+      p = strncpy (buffer, result, len);
+      buffer[len] = '\0';
+      while (isspace (*p))
+        ++p;
+      free (result);
+
+      parse_res = _nss_files_parse_netent (p, net, buffer, buflen);
+      if (!parse_res && errno == ERANGE)
+	{
+	  *herrnop = NETDB_INTERNAL;
+	  return NSS_STATUS_TRYAGAIN;
+	}
+
+      free (oldkey);
+      oldkey = outkey;
+      oldkeylen = keylen;
+      new_start = 0;
+    }
+  while (!parse_res);
+
+  return NSS_STATUS_SUCCESS;
+}
+
+enum nss_status
+_nss_nis_getnetent_r (struct netent *net, char *buffer, size_t buflen,
+		      int *herrnop)
+{
+  enum nss_status status;
+
+  __libc_lock_lock (lock);
+
+  status = internal_nis_getnetent_r (net, buffer, buflen, herrnop);
+
+  __libc_lock_unlock (lock);
+
+  return status;
+}
+
+enum nss_status
+_nss_nis_getnetbyname_r (const char *name, struct netent *net,
+			 char *buffer, size_t buflen, int *herrnop)
+{
+  enum nss_status retval;
+  char *domain, *result, *p;
+  int len, parse_res;
+
+  if (name == NULL)
+    {
+      __set_errno (EINVAL);
+      *herrnop = NETDB_INTERNAL;
+      return NSS_STATUS_UNAVAIL;
+    }
+
+  if (yp_get_default_domain (&domain))
+    return NSS_STATUS_UNAVAIL;
+
+  retval = yperr2nss (yp_match (domain, "networks.byname", name,
+                                strlen (name), &result, &len));
+
+  if (retval != NSS_STATUS_SUCCESS)
+    {
+      if (retval == NSS_STATUS_TRYAGAIN)
+	{
+	  __set_errno (EAGAIN);
+	  *herrnop = NETDB_INTERNAL;
+	}
+      return retval;
+    }
+
+  if (len + 1 > buflen)
+    {
+      free (result);
+      __set_errno (ERANGE);
+      *herrnop = NETDB_INTERNAL;
+      return NSS_STATUS_TRYAGAIN;
+    }
+
+  p = strncpy (buffer, result, len);
+  buffer[len] = '\0';
+  while (isspace (*p))
+    ++p;
+  free (result);
+
+  parse_res = _nss_files_parse_netent (p, net, buffer, buflen);
+
+  if (!parse_res)
+    {
+      *herrnop = NETDB_INTERNAL;
+      if (errno == ERANGE)
+	return NSS_STATUS_TRYAGAIN;
+      else
+        return NSS_STATUS_NOTFOUND;
+    }
+  else
+    return NSS_STATUS_SUCCESS;
+}
+
+enum nss_status
+_nss_nis_getnetbyaddr_r (unsigned long addr, int type, struct netent *net,
+			 char *buffer, size_t buflen, int *herrnop)
+{
+  char *domain;
+  char *result;
+  int len;
+  char buf[256];
+  int blen;
+  struct in_addr in;
+  char *p;
+
+  if (yp_get_default_domain (&domain))
+    return NSS_STATUS_UNAVAIL;
+
+  in = inet_makeaddr (addr, 0);
+  strcpy (buf, inet_ntoa (in));
+  blen = strlen (buf);
+
+  while (1)
+    {
+      enum nss_status retval;
+      int parse_res;
+
+      retval = yperr2nss (yp_match (domain, "networks.byaddr", buf,
+				    strlen (buf), &result, &len));
+
+	if (retval != NSS_STATUS_SUCCESS)
+	  {
+	    if (retval == NSS_STATUS_NOTFOUND)
+	      {
+		if (buf[blen - 2] == '.' && buf[blen - 1] == '0')
+		  {
+		    /* Try again, but with trailing dot(s)
+		       removed (one by one) */
+		    buf[blen - 2] = '\0';
+		    blen -= 2;
+		    continue;
+		  }
+		else
+		  return NSS_STATUS_NOTFOUND;
+	      }
+	    else
+	      {
+		if (retval == NSS_STATUS_TRYAGAIN)
+		  __set_errno (EAGAIN);
+		return retval;
+	      }
+	  }
+
+      if (len + 1 > buflen)
+	{
+	  free (result);
+	  __set_errno (ERANGE);
+	  *herrnop = NETDB_INTERNAL;
+	  return NSS_STATUS_TRYAGAIN;
+	}
+
+        p = strncpy (buffer, result, len);
+	buffer[len] = '\0';
+	while (isspace (*p))
+	  ++p;
+	free (result);
+
+	parse_res = _nss_files_parse_netent (p, net, buffer, buflen);
+
+
+	if (!parse_res)
+	  {
+	    *herrnop = NETDB_INTERNAL;
+	    if (errno == ERANGE)
+	      return NSS_STATUS_TRYAGAIN;
+	    else
+	      return NSS_STATUS_NOTFOUND;
+	  }
+	else
+	  return NSS_STATUS_SUCCESS;
+    }
+}
diff --git a/nis/nss_nis/nis-proto.c b/nis/nss_nis/nis-proto.c
new file mode 100644
index 0000000000..f62dfb1492
--- /dev/null
+++ b/nis/nss_nis/nis-proto.c
@@ -0,0 +1,246 @@
+/* Copyright (C) 1996 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Thorsten Kukuk <kukuk@vt.uni-paderborn.de>, 1996.
+
+   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 <nss.h>
+#include <netdb.h>
+#include <ctype.h>
+#include <errno.h>
+#include <string.h>
+#include <libc-lock.h>
+#include <rpcsvc/yp.h>
+#include <rpcsvc/ypclnt.h>
+
+#include "nss-nis.h"
+
+__libc_lock_define_initialized (static, lock)
+
+static bool_t new_start = 1;
+static char *oldkey = NULL;
+static int oldkeylen = 0;
+
+enum nss_status
+_nss_nis_setprotoent (void)
+{
+  __libc_lock_lock (lock);
+
+  new_start = 1;
+  if (oldkey != NULL)
+    {
+      free (oldkey);
+      oldkey = NULL;
+      oldkeylen = 0;
+    }
+
+  __libc_lock_unlock (lock);
+
+  return NSS_STATUS_SUCCESS;
+}
+
+enum nss_status
+_nss_nis_endprotoent (void)
+{
+  __libc_lock_lock (lock);
+
+  new_start = 1;
+  if (oldkey != NULL)
+    {
+      free (oldkey);
+      oldkey = NULL;
+      oldkeylen = 0;
+    }
+
+  __libc_lock_unlock (lock);
+
+  return NSS_STATUS_SUCCESS;
+}
+
+static enum nss_status
+internal_nis_getprotoent_r (struct protoent *proto,
+			    char *buffer, size_t buflen)
+{
+  char *domain, *result, *outkey;
+  int len, keylen, parse_res;
+
+  if (yp_get_default_domain (&domain))
+    return NSS_STATUS_UNAVAIL;
+
+  /* Get the next entry until we found a correct one. */
+  do
+    {
+      enum nss_status retval;
+      char *p;
+
+      if (new_start)
+        retval = yperr2nss (yp_first (domain, "protocols.bynumber",
+                                      &outkey, &keylen, &result, &len));
+      else
+        retval = yperr2nss ( yp_next (domain, "protocols.bynumber",
+                                      oldkey, oldkeylen,
+                                      &outkey, &keylen, &result, &len));
+
+      if (retval != NSS_STATUS_SUCCESS)
+        {
+          if (retval == NSS_STATUS_TRYAGAIN)
+            __set_errno (EAGAIN);
+          return retval;
+        }
+
+      if (len + 1 > buflen)
+        {
+          free (result);
+          __set_errno (ERANGE);
+          return NSS_STATUS_TRYAGAIN;
+        }
+
+      p = strncpy (buffer, result, len);
+      buffer[len] = '\0';
+      while (isspace (*p))
+        ++p;
+      free (result);
+
+      parse_res = _nss_files_parse_protoent (p, proto, buffer, buflen);
+      if (!parse_res && errno == ERANGE)
+        return NSS_STATUS_TRYAGAIN;
+
+      free (oldkey);
+      oldkey = outkey;
+      oldkeylen = keylen;
+      new_start = 0;
+    }
+  while (!parse_res);
+
+  return NSS_STATUS_SUCCESS;
+}
+
+enum nss_status
+_nss_nis_getprotoent_r (struct protoent *proto, char *buffer, size_t buflen)
+{
+  enum nss_status status;
+
+  __libc_lock_lock (lock);
+
+  status = internal_nis_getprotoent_r (proto, buffer, buflen);
+
+  __libc_lock_unlock (lock);
+
+  return status;
+}
+
+enum nss_status
+_nss_nis_getprotobyname_r (const char *name, struct protoent *proto,
+			   char *buffer, size_t buflen)
+{
+  enum nss_status retval;
+  char *domain, *result, *p;
+  int len, parse_res;
+
+  if (name == NULL)
+    {
+      __set_errno (EINVAL);
+      return NSS_STATUS_UNAVAIL;
+    }
+
+  if (yp_get_default_domain (&domain))
+    return NSS_STATUS_UNAVAIL;
+
+  retval = yperr2nss (yp_match (domain, "protocols.byname", name,
+                                strlen (name), &result, &len));
+
+  if (retval != NSS_STATUS_SUCCESS)
+    {
+      if (retval == NSS_STATUS_TRYAGAIN)
+        __set_errno (EAGAIN);
+      return retval;
+    }
+
+  if (len + 1 > buflen)
+    {
+      free (result);
+      __set_errno (ERANGE);
+      return NSS_STATUS_TRYAGAIN;
+    }
+
+  p = strncpy (buffer, result, len);
+  buffer[len] = '\0';
+  while (isspace (*p))
+    ++p;
+  free (result);
+
+  parse_res = _nss_files_parse_protoent (p, proto, buffer, buflen);
+
+  if (!parse_res)
+    {
+      if (errno == ERANGE)
+        return NSS_STATUS_TRYAGAIN;
+      else
+        return NSS_STATUS_NOTFOUND;
+    }
+  else
+    return NSS_STATUS_SUCCESS;
+}
+
+enum nss_status
+_nss_nis_getprotobynumber_r (int number, struct protoent *proto,
+			     char *buffer, size_t buflen)
+{
+  enum nss_status retval;
+  char *domain, *result, *p;
+  int len, nlen, parse_res;
+  char buf[32];
+
+  if (yp_get_default_domain (&domain))
+    return NSS_STATUS_UNAVAIL;
+
+  nlen = sprintf (buf, "%d", number);
+
+  retval = yperr2nss (yp_match (domain, "protocols.bynumber", buf,
+                                nlen, &result, &len));
+
+  if (retval != NSS_STATUS_SUCCESS)
+    {
+      if (retval == NSS_STATUS_TRYAGAIN)
+        __set_errno (EAGAIN);
+      return retval;
+    }
+
+  if (len + 1 > buflen)
+    {
+      free (result);
+      __set_errno (ERANGE);
+      return NSS_STATUS_TRYAGAIN;
+    }
+
+  p = strncpy (buffer, result, len);
+  buffer[len] = '\0';
+  while (isspace (*p))
+    ++p;
+  free (result);
+
+  parse_res = _nss_files_parse_protoent (p, proto, buffer, buflen);
+
+  if (!parse_res)
+    {
+      if (errno == ERANGE)
+        return NSS_STATUS_TRYAGAIN;
+      else
+        return NSS_STATUS_NOTFOUND;
+    }
+  else
+    return NSS_STATUS_SUCCESS;
+}
diff --git a/nis/nss_nis/nis-publickey.c b/nis/nss_nis/nis-publickey.c
new file mode 100644
index 0000000000..b9eda6a742
--- /dev/null
+++ b/nis/nss_nis/nis-publickey.c
@@ -0,0 +1,220 @@
+/* Copyright (C) 1996 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Thorsten Kukuk <kukuk@vt.uni-paderborn.de>, 1996.
+
+   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 <nss.h>
+#include <ctype.h>
+#include <errno.h>
+#include <string.h>
+#include <syslog.h>
+#include <libc-lock.h>
+#include <rpc/key_prot.h>
+#include <rpcsvc/yp.h>
+#include <rpcsvc/ypclnt.h>
+
+#include "nss-nis.h"
+
+extern int xdecrypt (char *, char *);
+
+/* If we found the entry, we give a SUCCESS and an empty key back. */
+enum nss_status
+_nss_nis_getpublickey (const char *netname, char *pkey)
+{
+  enum nss_status retval;
+  char *domain, *result;
+  int len;
+
+  pkey[0] = 0;
+
+  if (netname == NULL)
+    {
+      __set_errno (EINVAL);
+      return NSS_STATUS_UNAVAIL;
+    }
+
+  domain = strchr (netname, '@');
+  if (!domain)
+    return NSS_STATUS_UNAVAIL;
+  domain++;
+
+  retval = yperr2nss (yp_match (domain, "publickey.byname", netname,
+				strlen (netname), &result, &len));
+
+  if (retval != NSS_STATUS_SUCCESS)
+    {
+      if (retval == NSS_STATUS_TRYAGAIN)
+	__set_errno (EAGAIN);
+      return retval;
+    }
+
+  if (result != NULL)
+    {
+      char *p = strchr (result, ':');
+      if (p != NULL)
+	*p = 0;
+      strcpy (pkey, result);
+    }
+  return NSS_STATUS_SUCCESS;
+}
+
+enum nss_status
+_nss_nis_getsecretkey (const char *netname, char *skey, char *passwd)
+{
+  enum nss_status retval;
+  char buf[1024];
+  char *domain, *result;
+  int len;
+
+  skey[0] = 0;
+
+  if (netname == NULL || passwd == NULL)
+    {
+      __set_errno (EINVAL);
+      return NSS_STATUS_UNAVAIL;
+    }
+
+  domain = strchr (netname, '@');
+  if (!domain)
+    return NSS_STATUS_UNAVAIL;
+  domain++;
+
+  retval = yperr2nss (yp_match (domain, "publickey.byname", netname,
+				strlen (netname), &result, &len));
+
+  if (retval != NSS_STATUS_SUCCESS)
+    {
+      if (retval == NSS_STATUS_TRYAGAIN)
+	__set_errno (EAGAIN);
+      return retval;
+    }
+
+  if (result != NULL)
+    {
+      char *p = strchr (result, ':');
+      if (p == NULL)
+	return NSS_STATUS_SUCCESS;
+
+      p++;
+      strcpy (buf, p);
+      if (!xdecrypt (buf, passwd))
+	return NSS_STATUS_SUCCESS;
+
+      if (memcmp (buf, &(buf[HEXKEYBYTES]), KEYCHECKSUMSIZE) != 0)
+	return NSS_STATUS_SUCCESS;
+
+      buf[HEXKEYBYTES] = 0;
+      strcpy (skey, buf);
+    }
+  return NSS_STATUS_SUCCESS;
+}
+
+/* Parse uid and group information from the passed string.
+   The format of the string passed is uid:gid,grp,grp, ...  */
+static enum nss_status
+parse_netid_str (const char *s, uid_t *uidp, gid_t *gidp, int *gidlenp,
+		 gid_t *gidlist)
+{
+  char *p;
+
+  if (!s || !isdigit (*s))
+    {
+      syslog (LOG_ERR, "netname2user: expecting uid '%s'", s);
+      return NSS_STATUS_NOTFOUND;	/* XXX need a better error */
+    }
+
+  /* Fetch the uid */
+  *uidp = (atoi (s));
+
+  if (*uidp == 0)
+    {
+      syslog (LOG_ERR, "netname2user: should not have uid 0");
+      return NSS_STATUS_NOTFOUND;
+    }
+
+  /* Now get the group list */
+  p = strchr (s, ':');
+  if (!p)
+    {
+      syslog (LOG_ERR, "netname2user: missing group id list in '%s'", s);
+      return NSS_STATUS_NOTFOUND;
+    }
+  ++p;				/* skip ':' */
+  if (!p || (!isdigit (*p)))
+    {
+      syslog (LOG_ERR, "netname2user: missing group id list in '%s'.", p);
+      return NSS_STATUS_NOTFOUND;
+    }
+
+  *gidp = (atoi (p));
+
+  *gidlenp = 0;
+#if 0
+  while ((p = strchr (p, ',')) != NULL)
+    {
+      p++;
+      gidlist[*gidlenp++] = atoi (p);
+    }
+#endif
+
+  return NSS_STATUS_SUCCESS;
+}
+
+
+enum nss_status
+_nss_nis_netname2user (char netname[MAXNETNAMELEN + 1], uid_t *uidp,
+		       gid_t *gidp, int *gidlenp, gid_t *gidlist)
+{
+  char *domain;
+  int yperr;
+  char *lookup;
+  int len;
+
+  domain = strchr (netname, '@');
+  if (!domain)
+    return NSS_STATUS_UNAVAIL;
+
+  /* Point past the '@' character */
+  domain++;
+  lookup = NULL;
+  yperr = yp_match (domain, "netid.byname", netname, strlen (netname),
+		    &lookup, &len);
+  switch (yperr)
+    {
+    case YPERR_SUCCESS:
+      break;			/* the successful case */
+    case YPERR_DOMAIN:
+    case YPERR_KEY:
+      return NSS_STATUS_NOTFOUND;
+    case YPERR_MAP:
+    default:
+      return NSS_STATUS_UNAVAIL;
+    }
+  if (lookup)
+    {
+      enum nss_status err;
+
+      lookup[len] = '\0';
+      err = parse_netid_str (lookup, uidp, gidp, gidlenp, gidlist);
+      free (lookup);
+      return err;
+    }
+  else
+    return NSS_STATUS_NOTFOUND;
+
+  return NSS_STATUS_SUCCESS;
+}
diff --git a/nis/nss_nis/nis-pwd.c b/nis/nss_nis/nis-pwd.c
new file mode 100644
index 0000000000..afcc7a428e
--- /dev/null
+++ b/nis/nss_nis/nis-pwd.c
@@ -0,0 +1,246 @@
+/* Copyright (C) 1996 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Thorsten Kukuk <kukuk@vt.uni-paderborn.de>, 1996.
+
+   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 <nss.h>
+#include <pwd.h>
+#include <ctype.h>
+#include <errno.h>
+#include <string.h>
+#include <libc-lock.h>
+#include <rpcsvc/yp.h>
+#include <rpcsvc/ypclnt.h>
+
+#include "nss-nis.h"
+
+/* Protect global state against multiple changers */
+__libc_lock_define_initialized (static, lock)
+
+static bool_t new_start = 1;
+static char *oldkey = NULL;
+static int oldkeylen = 0;
+
+enum nss_status
+_nss_nis_setpwent (void)
+{
+  __libc_lock_lock (lock);
+
+  new_start = 1;
+  if (oldkey != NULL)
+    {
+      free (oldkey);
+      oldkey = NULL;
+      oldkeylen = 0;
+    }
+
+  __libc_lock_unlock (lock);
+
+  return NSS_STATUS_SUCCESS;
+}
+
+enum nss_status
+_nss_nis_endpwent (void)
+{
+  __libc_lock_lock (lock);
+
+  new_start = 1;
+  if (oldkey != NULL)
+    {
+      free (oldkey);
+      oldkey = NULL;
+      oldkeylen = 0;
+    }
+
+  __libc_lock_unlock (lock);
+
+  return NSS_STATUS_SUCCESS;
+}
+
+static enum nss_status
+internal_nis_getpwent_r (struct passwd *pwd, char *buffer, size_t buflen)
+{
+  char *domain, *result, *outkey;
+  int len, keylen, parse_res;
+
+  if (yp_get_default_domain (&domain))
+    return NSS_STATUS_UNAVAIL;
+
+  /* Get the next entry until we found a correct one. */
+  do
+    {
+      enum nss_status retval;
+      char *p;
+
+      if (new_start)
+        retval = yperr2nss (yp_first (domain, "passwd.byname",
+                                      &outkey, &keylen, &result, &len));
+      else
+        retval = yperr2nss ( yp_next (domain, "passwd.byname",
+                                      oldkey, oldkeylen,
+                                      &outkey, &keylen, &result, &len));
+
+      if (retval != NSS_STATUS_SUCCESS)
+        {
+          if (retval == NSS_STATUS_TRYAGAIN)
+            __set_errno (EAGAIN);
+          return retval;
+        }
+
+      if (len + 1 > buflen)
+        {
+          free (result);
+          __set_errno (ERANGE);
+          return NSS_STATUS_TRYAGAIN;
+        }
+
+      p = strncpy (buffer, result, len);
+      buffer[len] = '\0';
+      while (isspace (*p))
+        ++p;
+      free (result);
+
+      parse_res = _nss_files_parse_pwent (p, pwd, buffer, buflen);
+      if (!parse_res && errno == ERANGE)
+        return NSS_STATUS_TRYAGAIN;
+
+      free (oldkey);
+      oldkey = outkey;
+      oldkeylen = keylen;
+      new_start = 0;
+    }
+  while (!parse_res);
+
+  return NSS_STATUS_SUCCESS;
+}
+
+enum nss_status
+_nss_nis_getpwent_r (struct passwd *result, char *buffer, size_t buflen)
+{
+  int status;
+
+  __libc_lock_lock (lock);
+
+  status = internal_nis_getpwent_r (result, buffer, buflen);
+
+  __libc_lock_unlock (lock);
+
+  return status;
+}
+
+enum nss_status
+_nss_nis_getpwnam_r (const char *name, struct passwd *pwd,
+		     char *buffer, size_t buflen)
+{
+  enum nss_status retval;
+  char *domain, *result, *p;
+  int len, parse_res;
+
+  if (name == NULL)
+    {
+      __set_errno (EINVAL);
+      return NSS_STATUS_UNAVAIL;
+    }
+
+  if (yp_get_default_domain (&domain))
+    return NSS_STATUS_UNAVAIL;
+
+  retval = yperr2nss (yp_match (domain, "passwd.byname", name,
+				strlen (name), &result, &len));
+
+  if (retval != NSS_STATUS_SUCCESS)
+    {
+      if (retval == NSS_STATUS_TRYAGAIN)
+        __set_errno (EAGAIN);
+      return retval;
+    }
+
+  if (len + 1 > buflen)
+    {
+      free (result);
+      __set_errno (ERANGE);
+      return NSS_STATUS_TRYAGAIN;
+    }
+
+  p = strncpy (buffer, result, len);
+  buffer[len] = '\0';
+  while (isspace (*p))
+    ++p;
+  free (result);
+
+  parse_res = _nss_files_parse_pwent (p, pwd, buffer, buflen);
+
+  if (!parse_res)
+    {
+      if (errno == ERANGE)
+        return NSS_STATUS_TRYAGAIN;
+      else
+        return NSS_STATUS_NOTFOUND;
+    }
+  else
+    return NSS_STATUS_SUCCESS;
+}
+
+enum nss_status
+_nss_nis_getpwuid_r (uid_t uid, struct passwd *pwd,
+		     char *buffer, size_t buflen)
+{
+  enum nss_status retval;
+  char *domain, *result, *p;
+  int len, nlen, parse_res;
+  char buf[32];
+
+  if (yp_get_default_domain (&domain))
+    return NSS_STATUS_UNAVAIL;
+
+  nlen = sprintf (buf, "%d", uid);
+
+  retval = yperr2nss (yp_match (domain, "passwd.byuid", buf,
+				nlen, &result, &len));
+
+  if (retval != NSS_STATUS_SUCCESS)
+    {
+      if (retval == NSS_STATUS_TRYAGAIN)
+        __set_errno (EAGAIN);
+      return retval;
+    }
+
+  if (len + 1 > buflen)
+    {
+      free (result);
+      __set_errno (ERANGE);
+      return NSS_STATUS_TRYAGAIN;
+    }
+
+  p = strncpy (buffer, result, len);
+  buffer[len] = '\0';
+  while (isspace (*p))
+    ++p;
+  free (result);
+
+  parse_res = _nss_files_parse_pwent (p, pwd, buffer, buflen);
+
+  if (!parse_res)
+    {
+      if (errno == ERANGE)
+        return NSS_STATUS_TRYAGAIN;
+      else
+        return NSS_STATUS_NOTFOUND;
+    }
+  else
+    return NSS_STATUS_SUCCESS;
+}
diff --git a/nis/nss_nis/nis-rpc.c b/nis/nss_nis/nis-rpc.c
new file mode 100644
index 0000000000..91f54be3a9
--- /dev/null
+++ b/nis/nss_nis/nis-rpc.c
@@ -0,0 +1,270 @@
+/* Copyright (C) 1996 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Thorsten Kukuk <kukuk@vt.uni-paderborn.de>, 1996.
+
+   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 <nss.h>
+#include <netdb.h>
+#include <ctype.h>
+#include <errno.h>
+#include <string.h>
+#include <libc-lock.h>
+#include <rpcsvc/yp.h>
+#include <rpcsvc/ypclnt.h>
+
+#include "nss-nis.h"
+
+__libc_lock_define_initialized (static, lock)
+
+struct intern_t
+{
+  bool_t new_start;
+  char *oldkey;
+  int oldkeylen;
+};
+typedef struct intern_t intern_t;
+
+static intern_t intern = {TRUE, NULL, 0};
+
+static enum nss_status
+internal_nis_setrpcent (intern_t *data)
+{
+  data->new_start = 1;
+  if (data->oldkey != NULL)
+    {
+      free (data->oldkey);
+      data->oldkey = NULL;
+      data->oldkeylen = 0;
+    }
+  return NSS_STATUS_SUCCESS;
+}
+
+enum nss_status
+_nss_nis_setrpcent (void)
+{
+  enum nss_status status;
+
+  __libc_lock_lock (lock);
+
+  status = internal_nis_setrpcent (&intern);
+
+  __libc_lock_unlock (lock);
+
+  return status;
+}
+
+static enum nss_status
+internal_nis_endrpcent (intern_t *data)
+{
+  data->new_start = 1;
+  if (data->oldkey != NULL)
+    {
+      free (data->oldkey);
+      data->oldkey = NULL;
+      data->oldkeylen = 0;
+    }
+  return NSS_STATUS_SUCCESS;
+}
+
+enum nss_status
+_nss_nis_endrpcent (void)
+{
+  enum nss_status status;
+
+  __libc_lock_lock (lock);
+
+  status = internal_nis_endrpcent (&intern);
+
+  __libc_lock_unlock (lock);
+
+  return status;
+}
+
+static enum nss_status
+internal_nis_getrpcent_r (struct rpcent *rpc, char *buffer, size_t buflen,
+			  intern_t *data)
+{
+  char *domain;
+  char *result;
+  int len, parse_res;
+  char *outkey;
+  int keylen;
+  char *p;
+
+  if (yp_get_default_domain (&domain))
+    return NSS_STATUS_UNAVAIL;
+
+  /* Get the next entry until we found a correct one. */
+  do
+    {
+      enum nss_status retval;
+
+      if (data->new_start)
+        retval = yperr2nss (yp_first (domain, "rpc.bynumber",
+                                      &outkey, &keylen, &result, &len));
+      else
+        retval = yperr2nss ( yp_next (domain, "rpc.bynumber",
+				      data->oldkey, data->oldkeylen,
+				      &outkey, &keylen, &result, &len));
+
+      if (retval != NSS_STATUS_SUCCESS)
+        {
+          if (retval == NSS_STATUS_TRYAGAIN)
+            __set_errno (EAGAIN);
+          return retval;
+        }
+
+      if (len + 1 > buflen)
+        {
+          free (result);
+          __set_errno (ERANGE);
+          return NSS_STATUS_TRYAGAIN;
+        }
+
+      p = strncpy (buffer, result, len);
+      buffer[len] = '\0';
+      while (isspace (*p))
+        ++p;
+      free (result);
+
+      parse_res = _nss_files_parse_rpcent (p, rpc, buffer, buflen);
+      if (!parse_res && errno == ERANGE)
+	return NSS_STATUS_TRYAGAIN;
+
+      free (data->oldkey);
+      data->oldkey = outkey;
+      data->oldkeylen = keylen;
+      data->new_start = 0;
+    }
+  while (!parse_res);
+
+  return NSS_STATUS_SUCCESS;
+}
+
+enum nss_status
+_nss_nis_getrpcent_r (struct rpcent *rpc, char *buffer, size_t buflen)
+{
+  enum nss_status status;
+
+  __libc_lock_lock (lock);
+
+  status = internal_nis_getrpcent_r (rpc, buffer, buflen, &intern);
+
+  __libc_lock_unlock (lock);
+
+  return status;
+}
+
+enum nss_status
+_nss_nis_getrpcbyname_r (const char *name, struct rpcent *rpc,
+			 char *buffer, size_t buflen)
+{
+  intern_t data = {TRUE, NULL, 0};
+  enum nss_status status;
+  int found;
+
+  if (name == NULL)
+    {
+      __set_errno (EINVAL);
+      return NSS_STATUS_UNAVAIL;
+    }
+
+  status = internal_nis_setrpcent (&data);
+  if (status != NSS_STATUS_SUCCESS)
+    return status;
+
+  found = 0;
+  while (!found &&
+         ((status = internal_nis_getrpcent_r (rpc, buffer, buflen, &data))
+          == NSS_STATUS_SUCCESS))
+    {
+      if (strcmp (rpc->r_name, name) == 0)
+	found = 1;
+      else
+	{
+	  int i = 0;
+
+	  while (rpc->r_aliases[i] != NULL)
+	    {
+	      if (strcmp (rpc->r_aliases[i], name) == 0)
+		{
+		  found = 1;
+		  break;
+		}
+	      else
+		++i;
+	    }
+	}
+    }
+
+  internal_nis_endrpcent (&data);
+
+  if (!found && status == NSS_STATUS_SUCCESS)
+    return NSS_STATUS_NOTFOUND;
+  else
+    return status;
+}
+
+enum nss_status
+_nss_nis_getrpcbynumber_r (int number, struct rpcent *rpc,
+			   char *buffer, size_t buflen)
+{
+  enum nss_status retval;
+  char *domain, *result, *p;
+  int len, nlen, parse_res;
+  char buf[32];
+
+  if (yp_get_default_domain (&domain))
+    return NSS_STATUS_UNAVAIL;
+
+  nlen = sprintf (buf, "%d", number);
+
+  retval = yperr2nss (yp_match (domain, "rpc.bynumber", buf,
+				 nlen, &result, &len));
+
+  if (retval != NSS_STATUS_SUCCESS)
+    {
+      if (retval == NSS_STATUS_TRYAGAIN)
+	__set_errno (EAGAIN);
+      return retval;
+    }
+
+  if (len + 1 > buflen)
+    {
+      free (result);
+      __set_errno (ERANGE);
+      return NSS_STATUS_TRYAGAIN;
+    }
+
+  p = strncpy (buffer, result, len);
+  buffer[len] = '\0';
+  while (isspace (*p))
+    ++p;
+  free (result);
+
+  parse_res = _nss_files_parse_rpcent (p, rpc, buffer, buflen);
+
+  if (!parse_res)
+    {
+      if (errno == ERANGE)
+	return NSS_STATUS_TRYAGAIN;
+      else
+	return NSS_STATUS_NOTFOUND;
+    }
+  else
+    return NSS_STATUS_SUCCESS;
+}
diff --git a/nis/nss_nis/nis-service.c b/nis/nss_nis/nis-service.c
new file mode 100644
index 0000000000..03a9fbf48e
--- /dev/null
+++ b/nis/nss_nis/nis-service.c
@@ -0,0 +1,249 @@
+/* Copyright (C) 1996 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Thorsten Kukuk <kukuk@vt.uni-paderborn.de>, 1996.
+
+   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 <nss.h>
+#include <netdb.h>
+#include <ctype.h>
+#include <errno.h>
+#include <string.h>
+#include <libc-lock.h>
+#include <rpcsvc/yp.h>
+#include <rpcsvc/ypclnt.h>
+
+#include "nss-nis.h"
+
+__libc_lock_define_initialized (static, lock)
+
+struct intern_t
+{
+  bool_t new_start;
+  char *oldkey;
+  int oldkeylen;
+};
+typedef struct intern_t intern_t;
+
+static intern_t intern = {TRUE, NULL, 0};
+
+static enum nss_status
+internal_nis_setservent (intern_t * intern)
+{
+  intern->new_start = 1;
+  if (intern->oldkey != NULL)
+    {
+      free (intern->oldkey);
+      intern->oldkey = NULL;
+      intern->oldkeylen = 0;
+    }
+  return NSS_STATUS_SUCCESS;
+}
+enum nss_status
+_nss_nis_setservent (void)
+{
+  enum nss_status status;
+
+  __libc_lock_lock (lock);
+
+  status = internal_nis_setservent (&intern);
+
+  __libc_lock_unlock (lock);
+
+  return status;
+}
+
+static enum nss_status
+internal_nis_endservent (intern_t * intern)
+{
+  intern->new_start = 1;
+  if (intern->oldkey != NULL)
+    {
+      free (intern->oldkey);
+      intern->oldkey = NULL;
+      intern->oldkeylen = 0;
+    }
+  return NSS_STATUS_SUCCESS;
+}
+
+enum nss_status
+_nss_nis_endservent (void)
+{
+  enum nss_status status;
+
+  __libc_lock_lock (lock);
+
+  status = internal_nis_endservent (&intern);
+
+  __libc_lock_unlock (lock);
+
+  return status;
+}
+
+static enum nss_status
+internal_nis_getservent_r (struct servent *serv, char *buffer,
+			   size_t buflen, intern_t *data)
+{
+  char *domain;
+  char *result;
+  int len, parse_res;
+  char *outkey;
+  int keylen;
+  char *p;
+
+  if (yp_get_default_domain (&domain))
+    return NSS_STATUS_UNAVAIL;
+
+  /* Get the next entry until we found a correct one. */
+  do
+    {
+      enum nss_status retval;
+
+      if (data->new_start)
+        retval = yperr2nss (yp_first (domain, "services.byname",
+                                      &outkey, &keylen, &result, &len));
+      else
+        retval = yperr2nss ( yp_next (domain, "services.byname",
+                                      data->oldkey, data->oldkeylen,
+                                      &outkey, &keylen, &result, &len));
+
+      if (retval != NSS_STATUS_SUCCESS)
+        {
+          if (retval == NSS_STATUS_TRYAGAIN)
+            __set_errno (EAGAIN);
+          return retval;
+        }
+
+      if (len + 1 > buflen)
+        {
+          free (result);
+          __set_errno (ERANGE);
+          return NSS_STATUS_TRYAGAIN;
+        }
+
+      p = strncpy (buffer, result, len);
+      buffer[len] = '\0';
+      while (isspace (*p))
+        ++p;
+      free (result);
+
+      parse_res = _nss_files_parse_servent (p, serv, buffer, buflen);
+      if (!parse_res && errno == ERANGE)
+        return NSS_STATUS_TRYAGAIN;
+
+      free (data->oldkey);
+      data->oldkey = outkey;
+      data->oldkeylen = keylen;
+      data->new_start = 0;
+    }
+  while (!parse_res);
+
+  return NSS_STATUS_SUCCESS;
+}
+
+enum nss_status
+_nss_nis_getservent_r (struct servent *serv, char *buffer, size_t buflen)
+{
+  enum nss_status status;
+
+  __libc_lock_lock (lock);
+
+  status = internal_nis_getservent_r (serv, buffer, buflen, &intern);
+
+  __libc_lock_unlock (lock);
+
+  return status;
+}
+
+enum nss_status
+_nss_nis_getservbyname_r (const char *name, char *protocol,
+			  struct servent *serv, char *buffer, size_t buflen)
+{
+  intern_t data = {TRUE, NULL, 0};
+  enum nss_status status;
+  int found;
+
+  if (name == NULL || protocol == NULL)
+    {
+      __set_errno (EINVAL);
+      return NSS_STATUS_UNAVAIL;
+    }
+
+  status = internal_nis_setservent (&data);
+  if (status != NSS_STATUS_SUCCESS)
+    return status;
+
+  found = 0;
+  while (!found &&
+         ((status = internal_nis_getservent_r (serv, buffer, buflen, &data))
+          == NSS_STATUS_SUCCESS))
+    {
+      if (strcmp (serv->s_name, name) == 0)
+        {
+          if (strcmp (serv->s_proto, protocol) == 0)
+            {
+              found = 1;
+            }
+        }
+    }
+
+  internal_nis_endservent (&data);
+
+  if (!found && status == NSS_STATUS_SUCCESS)
+    return NSS_STATUS_NOTFOUND;
+  else
+    return status;
+}
+
+enum nss_status
+_nss_nis_getservbyport_r (int port, char *protocol, struct servent *serv,
+			  char *buffer, size_t buflen)
+{
+  intern_t data = {TRUE, NULL, 0};
+  enum nss_status status;
+  int found;
+
+  if (protocol == NULL)
+    {
+      __set_errno (EINVAL);
+      return NSS_STATUS_UNAVAIL;
+    }
+
+  status = internal_nis_setservent (&data);
+  if (status != NSS_STATUS_SUCCESS)
+    return status;
+
+  found = 0;
+  while (!found &&
+         ((status = internal_nis_getservent_r (serv, buffer, buflen, &data))
+          == NSS_STATUS_SUCCESS))
+    {
+      if (htons (serv->s_port) == port)
+        {
+          if  (strcmp (serv->s_proto, protocol) == 0)
+            {
+              found = 1;
+            }
+        }
+    }
+
+  internal_nis_endservent (&data);
+
+  if (!found && status == NSS_STATUS_SUCCESS)
+    return NSS_STATUS_NOTFOUND;
+  else
+    return status;
+}
diff --git a/nis/nss_nis/nis-spwd.c b/nis/nss_nis/nis-spwd.c
new file mode 100644
index 0000000000..928489245b
--- /dev/null
+++ b/nis/nss_nis/nis-spwd.c
@@ -0,0 +1,196 @@
+/* Copyright (C) 1996 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Thorsten Kukuk <kukuk@vt.uni-paderborn.de>, 1996.
+
+   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 <nss.h>
+#include <ctype.h>
+#include <errno.h>
+#include <string.h>
+#include <shadow.h>
+#include <libc-lock.h>
+#include <rpcsvc/yp.h>
+#include <rpcsvc/ypclnt.h>
+
+#include "nss-nis.h"
+
+/* Protect global state against multiple changers */
+__libc_lock_define_initialized (static, lock)
+
+static bool_t new_start = 1;
+static char *oldkey = NULL;
+static int oldkeylen = 0;
+
+enum nss_status
+_nss_nis_setspent (void)
+{
+  __libc_lock_lock (lock);
+
+  new_start = 1;
+  if (oldkey != NULL)
+    {
+      free (oldkey);
+      oldkey = NULL;
+      oldkeylen = 0;
+    }
+
+  __libc_lock_unlock (lock);
+
+  return NSS_STATUS_SUCCESS;
+}
+
+enum nss_status
+_nss_nis_endspent (void)
+{
+  __libc_lock_lock (lock);
+
+  new_start = 1;
+  if (oldkey != NULL)
+    {
+      free (oldkey);
+      oldkey = NULL;
+      oldkeylen = 0;
+    }
+
+  __libc_lock_unlock (lock);
+
+  return NSS_STATUS_SUCCESS;
+}
+
+static enum nss_status
+internal_nis_getspent_r (struct spwd *sp, char *buffer, size_t buflen)
+{
+  char *domain, *result, *outkey;
+  int len, keylen, parse_res;
+
+  if (yp_get_default_domain (&domain))
+    return NSS_STATUS_UNAVAIL;
+
+  /* Get the next entry until we found a correct one. */
+  do
+    {
+      enum nss_status retval;
+      char *p;
+
+      if (new_start)
+        retval = yperr2nss (yp_first (domain, "shadow.byname",
+                                      &outkey, &keylen, &result, &len));
+      else
+        retval = yperr2nss ( yp_next (domain, "shadow.byname",
+                                      oldkey, oldkeylen,
+                                      &outkey, &keylen, &result, &len));
+
+      if (retval != NSS_STATUS_SUCCESS)
+        {
+          if (retval == NSS_STATUS_TRYAGAIN)
+            __set_errno (EAGAIN);
+          return retval;
+        }
+
+      if (len + 1 > buflen)
+        {
+          free (result);
+          __set_errno (ERANGE);
+          return NSS_STATUS_TRYAGAIN;
+        }
+
+      p = strncpy (buffer, result, len);
+      buffer[len] = '\0';
+      while (isspace (*p))
+        ++p;
+      free (result);
+
+      parse_res = _nss_files_parse_spent (p, sp, buffer, buflen);
+      if (!parse_res && errno == ERANGE)
+        return NSS_STATUS_TRYAGAIN;
+
+      free (oldkey);
+      oldkey = outkey;
+      oldkeylen = keylen;
+      new_start = 0;
+    }
+  while (!parse_res);
+
+  return NSS_STATUS_SUCCESS;
+}
+
+enum nss_status
+_nss_nis_getspent_r (struct spwd *result, char *buffer, size_t buflen)
+{
+  int status;
+
+  __libc_lock_lock (lock);
+
+  status = internal_nis_getspent_r (result, buffer, buflen);
+
+  __libc_lock_unlock (lock);
+
+  return status;
+}
+
+enum nss_status
+_nss_nis_getspnam_r (const char *name, struct spwd *sp,
+		     char *buffer, size_t buflen)
+{
+  enum nss_status retval;
+  char *domain, *result, *p;
+  int len, parse_res;
+
+  if (name == NULL)
+    {
+      __set_errno (EINVAL);
+      return NSS_STATUS_UNAVAIL;
+    }
+
+  if (yp_get_default_domain (&domain))
+    return NSS_STATUS_UNAVAIL;
+
+  retval = yperr2nss (yp_match (domain, "shadow.byname", name,
+				strlen (name), &result, &len));
+
+  if (retval != NSS_STATUS_SUCCESS)
+    {
+      if (retval == NSS_STATUS_TRYAGAIN)
+        __set_errno (EAGAIN);
+      return retval;
+    }
+
+  if (len + 1 > buflen)
+    {
+      free (result);
+      __set_errno (ERANGE);
+      return NSS_STATUS_TRYAGAIN;
+    }
+
+  p = strncpy (buffer, result, len);
+  buffer[len] = '\0';
+  while (isspace (*p))
+    ++p;
+  free (result);
+
+  parse_res = _nss_files_parse_spent (p, sp, buffer, buflen);
+
+  if (!parse_res)
+    {
+      if (errno == ERANGE)
+        return NSS_STATUS_TRYAGAIN;
+      else
+        return NSS_STATUS_NOTFOUND;
+    }
+  else
+    return NSS_STATUS_SUCCESS;
+}