* nis/nis_call.c (__prepare_niscall): New function. Split out cvs/fedora-glibc-20060521T2153

	from __do_niscall.
	* nis/nis_table.c (__create_ib_request): Renamed from create_ib_request
	and exported.
	(__follow_path): New function.  Split out from nis_list.
	* nis/nis_xdr.h: Add libnsl_hidden_proto for _xdr_ib_request and
	_xdr_nis_result.
	* nis/nis_xdr.c: Add libnsl_hidden_def for _xdr_ib_request and
	_xdr_nis_result.
	* nis/libnsl.h: Declare __prepare_niscall, __create_ib_request,
	and __follow_path.
	* nis/Versions: Export __prepare_niscall, __create_ib_request,
	__follow_path, __do_niscall3, _xdr_ib_request, and _xdr_nis_result
	from libnsl for version GLIBC_PRIVATE.
	* nis/nisplus-parser.h: Remove _nss_nisplus_parse_pwent_chk.
	Remove entry parameter from _nss_nisplus_parse_pwent and
	_nss_nisplus_parse_grent.
	* nis/nss_nisplus/nisplus-parser.c: Likewise.
	* nis/nss_nisplus/nisplus-pwd.c: Remove support for SETENT_BATCH_READ
	again.  Rewrite getpwent handling to not use nis_first_entry and
	nis_next_entry.  Roll out own niscall handling.
	* nis/nss_nisplus/nisplus-grp.c: Likewise.

	* sunrpc/xdr_rec.c: Fix typo in comment.

2006-05-18  David Woodhouse  <dwmw2@redhat.com>

3 files changed, 325 insertions, 243 deletions

diff --git a/nis/nss_nisplus/nisplus-grp.c b/nis/nss_nisplus/nisplus-grp.c
index 624b20610a..c1adc98aee 100644
--- a/nis/nss_nisplus/nisplus-grp.c
+++ b/nis/nss_nisplus/nisplus-grp.c
@@ -29,12 +29,23 @@
 
 #include "nss-nisplus.h"
 #include "nisplus-parser.h"
+#include <libnsl.h>
+#include <nis_intern.h>
+#include <nis_xdr.h>
 
 
 __libc_lock_define_initialized (static, lock);
 
-static nis_result *result;
-static unsigned long next_entry;
+/* Connection information.  */
+static ib_request *ibreq;
+static directory_obj *dir;
+static dir_binding bptr;
+static char *tablepath;
+static char *tableptr;
+/* Cursor.  */
+static netobj cursor;
+
+
 static nis_name tablename_val;
 static size_t tablename_len;
 
@@ -66,43 +77,57 @@ _nss_create_tablename (int *errnop)
   return NSS_STATUS_SUCCESS;
 }
 
-static enum nss_status
-internal_setgrent (void)
+
+static void
+internal_endgrent (void)
 {
-  enum nss_status status;
+  __nisbind_destroy (&bptr);
+  memset (&bptr, '\0', sizeof (bptr));
 
-  if (result != NULL)
-    {
-      nis_freeresult (result);
-      result = NULL;
-    }
-  next_entry = 0;
+  nis_free_directory (dir);
+  dir = NULL;
+
+  nis_free_request (ibreq);
+  ibreq = NULL;
+
+  xdr_free ((xdrproc_t) xdr_netobj, (char *) &cursor);
+  memset (&cursor, '\0', sizeof (cursor));
+
+  free (tablepath);
+  tableptr = tablepath = NULL;
+}
+
+
+static enum nss_status
+internal_setgrent (int *errnop)
+{
+  enum nss_status status = NSS_STATUS_SUCCESS;
 
   if (tablename_val == NULL)
-    {
-      int err;
-      if (_nss_create_tablename (&err) != NSS_STATUS_SUCCESS)
-	return NSS_STATUS_UNAVAIL;
-    }
+    status = _nss_create_tablename (errnop);
 
-  result = nis_list (tablename_val, FOLLOW_LINKS | FOLLOW_PATH, NULL, NULL);
-  if (result == NULL)
+  if (status == NSS_STATUS_SUCCESS)
     {
-      status = NSS_STATUS_TRYAGAIN;
-      __set_errno (ENOMEM);
-    }
-  else
-    {
-      status = niserr2nss (result->status);
-      if (status != NSS_STATUS_SUCCESS)
+      ibreq = __create_ib_request (tablename_val, 0);
+      if (ibreq == NULL)
 	{
-	  nis_freeresult (result);
-	  result = NULL;
+	  *errnop = errno;
+	  return NSS_STATUS_TRYAGAIN;
+	}
+
+      nis_error retcode = __prepare_niscall (tablename_val, &dir, &bptr, 0);
+      if (retcode != NIS_SUCCESS)
+	{
+	  nis_free_request (ibreq);
+	  ibreq = NULL;
+	  status = niserr2nss (retcode);
 	}
     }
+
   return status;
 }
 
+
 enum nss_status
 _nss_nisplus_setgrent (int stayopen)
 {
@@ -110,60 +135,133 @@ _nss_nisplus_setgrent (int stayopen)
 
   __libc_lock_lock (lock);
 
-  status = internal_setgrent ();
+  internal_endgrent ();
+
+  // XXX We need to be able to set errno.  Pass in new parameter.
+  int err;
+  status = internal_setgrent (&err);
 
   __libc_lock_unlock (lock);
 
   return status;
 }
 
+
 enum nss_status
 _nss_nisplus_endgrent (void)
 {
   __libc_lock_lock (lock);
 
-  if (result != NULL)
-    {
-      nis_freeresult (result);
-      result = NULL;
-    }
+  internal_endgrent ();
 
   __libc_lock_unlock (lock);
 
   return NSS_STATUS_SUCCESS;
 }
 
+
 static enum nss_status
 internal_nisplus_getgrent_r (struct group *gr, char *buffer, size_t buflen,
 			     int *errnop)
 {
-  int parse_res;
-
-  if (result == NULL)
-    {
-      enum nss_status status;
-
-      status = internal_setgrent ();
-      if (result == NULL || status != NSS_STATUS_SUCCESS)
-	return status;
-    }
+  int parse_res = -1;
+  enum nss_status retval = NSS_STATUS_SUCCESS;
 
   /* Get the next entry until we found a correct one. */
   do
     {
-      if (next_entry >= result->objects.objects_len)
-	return NSS_STATUS_NOTFOUND;
+      nis_error status;
+      nis_result result;
+      memset (&result, '\0', sizeof (result));
 
-      parse_res = _nss_nisplus_parse_grent (result, next_entry, gr,
+      if (cursor.n_bytes == NULL)
+	{
+	  if (ibreq == NULL)
+	    {
+	      retval = internal_setgrent (errnop);
+	      if (retval != NSS_STATUS_SUCCESS)
+		return retval;
+	    }
+
+	  status = __do_niscall3 (&bptr, NIS_IBFIRST,
+				  (xdrproc_t) _xdr_ib_request,
+				  (caddr_t) ibreq,
+				  (xdrproc_t) _xdr_nis_result,
+				  (caddr_t) &result,
+				  0, NULL);
+	}
+      else
+	{
+	  ibreq->ibr_cookie.n_bytes = cursor.n_bytes;
+	  ibreq->ibr_cookie.n_len = cursor.n_len;
+
+	  status = __do_niscall3 (&bptr, NIS_IBNEXT,
+				  (xdrproc_t) _xdr_ib_request,
+				  (caddr_t) ibreq,
+				  (xdrproc_t) _xdr_nis_result,
+				  (caddr_t) &result,
+				  0, NULL);
+
+	  ibreq->ibr_cookie.n_bytes = NULL;
+	  ibreq->ibr_cookie.n_len = 0;
+	}
+
+      if (status != NIS_SUCCESS)
+	return niserr2nss (status);
+
+      if (NIS_RES_STATUS (&result) == NIS_NOTFOUND)
+	{
+	  /* No more entries on this server.  This means we have to go
+	     to the next server on the path.  */
+	  status = __follow_path (&tablepath, &tableptr, ibreq, &bptr);
+	  if (status != NIS_SUCCESS)
+	    return niserr2nss (status);
+
+	  directory_obj *newdir = NULL;
+	  dir_binding newbptr;
+	  status = __prepare_niscall (ibreq->ibr_name, &newdir, &newbptr, 0);
+	  if (status != NIS_SUCCESS)
+	    return niserr2nss (status);
+
+	  nis_free_directory (dir);
+	  dir = newdir;
+	  __nisbind_destroy (&bptr);
+	  bptr = newbptr;
+
+	  xdr_free ((xdrproc_t) xdr_netobj, (char *) &result.cookie);
+	  result.cookie.n_bytes = NULL;
+	  result.cookie.n_len = 0;
+	  parse_res = 0;
+	  goto next;
+	}
+      else if (NIS_RES_STATUS (&result) != NIS_SUCCESS)
+	return niserr2nss (NIS_RES_STATUS (&result));
+
+      parse_res = _nss_nisplus_parse_grent (&result, gr,
 					    buffer, buflen, errnop);
-      if (parse_res == -1)
-	return NSS_STATUS_TRYAGAIN;
+      if (__builtin_expect (parse_res == -1, 0))
+	{
+	  *errnop = ERANGE;
+	  retval = NSS_STATUS_TRYAGAIN;
+	  goto freeres;
+	}
 
-      ++next_entry;
+    next:
+      /* Free the old cursor.  */
+      xdr_free ((xdrproc_t) xdr_netobj, (char *) &cursor);
+      /* Remember the new one.  */
+      cursor.n_bytes = result.cookie.n_bytes;
+      cursor.n_len = result.cookie.n_len;
+      /* Free the result structure.  NB: we do not remove the cookie.  */
+      result.cookie.n_bytes = NULL;
+      result.cookie.n_len = 0;
+    freeres:
+      xdr_free ((xdrproc_t) _xdr_nis_result, (char *) &result);
+      memset (&result, '\0', sizeof (result));
     }
   while (!parse_res);
 
-  return NSS_STATUS_SUCCESS;
+  return retval;
 }
 
 enum nss_status
@@ -227,7 +325,7 @@ _nss_nisplus_getgrnam_r (const char *name, struct group *gr,
       return status;
     }
 
-  parse_res = _nss_nisplus_parse_grent (result, 0, gr, buffer, buflen, errnop);
+  parse_res = _nss_nisplus_parse_grent (result, gr, buffer, buflen, errnop);
   nis_freeresult (result);
   if (__builtin_expect (parse_res < 1, 0))
     {
@@ -288,7 +386,7 @@ _nss_nisplus_getgrgid_r (const gid_t gid, struct group *gr,
       return status;
     }
 
-  parse_res = _nss_nisplus_parse_grent (result, 0, gr, buffer, buflen, errnop);
+  parse_res = _nss_nisplus_parse_grent (result, gr, buffer, buflen, errnop);
 
   nis_freeresult (result);
   if (__builtin_expect (parse_res < 1, 0))
diff --git a/nis/nss_nisplus/nisplus-parser.c b/nis/nss_nisplus/nisplus-parser.c
index 5ed07d86d9..1e1a343d52 100644
--- a/nis/nss_nisplus/nisplus-parser.c
+++ b/nis/nss_nisplus/nisplus-parser.c
@@ -31,10 +31,16 @@
 #define NISENTRYLEN(idx, col, res) \
         (NIS_RES_OBJECT (res)[idx].EN_data.en_cols.en_cols_val[col].ec_value.ec_value_len)
 
+#define NISOBJVAL(col, obj) \
+  ((obj)->EN_data.en_cols.en_cols_val[col].ec_value.ec_value_val)
+
+#define NISOBJLEN(col, obj) \
+  ((obj)->EN_data.en_cols.en_cols_val[col].ec_value.ec_value_len)
+
 
 int
-_nss_nisplus_parse_pwent_chk (nis_result *result, struct passwd *pw,
-			      char *buffer, size_t buflen, int *errnop)
+_nss_nisplus_parse_pwent (nis_result *result, struct passwd *pw,
+			  char *buffer, size_t buflen, int *errnop)
 {
   if ((result->status != NIS_SUCCESS && result->status != NIS_S_SUCCESS)
       || NIS_RES_NUMOBJ (result) != 1
@@ -43,19 +49,12 @@ _nss_nisplus_parse_pwent_chk (nis_result *result, struct passwd *pw,
       || NIS_RES_OBJECT (result)->EN_data.en_cols.en_cols_len < 7)
     return 0;
 
-  return _nss_nisplus_parse_pwent (result, 0, pw, buffer, buflen, errnop);
-}
-
-
-int
-_nss_nisplus_parse_pwent (nis_result *result, size_t entry, struct passwd *pw,
-			  char *buffer, size_t buflen, int *errnop)
-{
+  nis_object *obj = NIS_RES_OBJECT (result);
   char *first_unused = buffer;
   size_t room_left = buflen;
   size_t len;
 
-  if (NISENTRYLEN (entry, 0, result) >= room_left)
+  if (NISOBJLEN (0, obj) >= room_left)
     {
       /* The line is too long for our buffer.  */
     no_more_room:
@@ -63,9 +62,8 @@ _nss_nisplus_parse_pwent (nis_result *result, size_t entry, struct passwd *pw,
       return -1;
     }
 
-  strncpy (first_unused, NISENTRYVAL (entry, 0, result),
-	   NISENTRYLEN (entry, 0, result));
-  first_unused[NISENTRYLEN (entry, 0, result)] = '\0';
+  strncpy (first_unused, NISOBJVAL (0, obj), NISOBJLEN (0, obj));
+  first_unused[NISOBJLEN (0, obj)] = '\0';
   len = strlen (first_unused);
   if (len == 0) /* No name ? Should never happen, database is corrupt */
     return 0;
@@ -73,19 +71,18 @@ _nss_nisplus_parse_pwent (nis_result *result, size_t entry, struct passwd *pw,
   room_left -= len + 1;
   first_unused += len + 1;
 
-  if (NISENTRYLEN (entry, 1, result) >= room_left)
+  if (NISOBJLEN (1, obj) >= room_left)
     goto no_more_room;
 
-  strncpy (first_unused, NISENTRYVAL (entry, 1, result),
-	   NISENTRYLEN (entry, 1, result));
-  first_unused[NISENTRYLEN (entry, 1, result)] = '\0';
+  strncpy (first_unused, NISOBJVAL (1, obj), NISOBJLEN (1, obj));
+  first_unused[NISOBJLEN (1, obj)] = '\0';
   pw->pw_passwd = first_unused;
   len = strlen (first_unused);
   room_left -= len + 1;
   first_unused += len + 1;
 
-  char *numstr = NISENTRYVAL (entry, 2, result);
-  len = NISENTRYLEN (entry, 2, result);
+  char *numstr = NISOBJVAL (2, obj);
+  len = NISOBJLEN (2, obj);
   if (len == 0 && numstr[len - 1] != '\0')
     {
       if (len >= room_left)
@@ -100,8 +97,8 @@ _nss_nisplus_parse_pwent (nis_result *result, size_t entry, struct passwd *pw,
     return 0;
   pw->pw_uid = strtoul (numstr, NULL, 10);
 
-  numstr = NISENTRYVAL (entry, 3, result);
-  len = NISENTRYLEN (entry, 3, result);
+  numstr = NISOBJVAL (3, obj);
+  len = NISOBJLEN (3, obj);
   if (len == 0 && numstr[len - 1] != '\0')
     {
       if (len >= room_left)
@@ -116,34 +113,31 @@ _nss_nisplus_parse_pwent (nis_result *result, size_t entry, struct passwd *pw,
     return 0;
   pw->pw_gid = strtoul (numstr, NULL, 10);
 
-  if (NISENTRYLEN(entry, 4, result) >= room_left)
+  if (NISOBJLEN(4, obj) >= room_left)
     goto no_more_room;
 
-  strncpy (first_unused, NISENTRYVAL (entry, 4, result),
-	   NISENTRYLEN (entry, 4, result));
-  first_unused[NISENTRYLEN (entry, 4, result)] = '\0';
+  strncpy (first_unused, NISOBJVAL (4, obj), NISOBJLEN (4, obj));
+  first_unused[NISOBJLEN (4, obj)] = '\0';
   pw->pw_gecos = first_unused;
   len = strlen (first_unused);
   room_left -= len + 1;
   first_unused += len + 1;
 
-  if (NISENTRYLEN (entry, 5, result) >= room_left)
+  if (NISOBJLEN (5, obj) >= room_left)
     goto no_more_room;
 
-  strncpy (first_unused, NISENTRYVAL (entry, 5, result),
-	   NISENTRYLEN (entry, 5, result));
-  first_unused[NISENTRYLEN (entry, 5, result)] = '\0';
+  strncpy (first_unused, NISOBJVAL (5, obj), NISOBJLEN (5, obj));
+  first_unused[NISOBJLEN (5, obj)] = '\0';
   pw->pw_dir = first_unused;
   len = strlen (first_unused);
   room_left -= len + 1;
   first_unused += len + 1;
 
-  if (NISENTRYLEN (entry, 6, result) >= room_left)
+  if (NISOBJLEN (6, obj) >= room_left)
     goto no_more_room;
 
-  strncpy (first_unused, NISENTRYVAL (entry, 6, result),
-	   NISENTRYLEN (entry, 6, result));
-  first_unused[NISENTRYLEN (entry, 6, result)] = '\0';
+  strncpy (first_unused, NISOBJVAL (6, obj), NISOBJLEN (6, obj));
+  first_unused[NISOBJLEN (6, obj)] = '\0';
   pw->pw_shell = first_unused;
   len = strlen (first_unused);
   room_left -= len + 1;
@@ -154,26 +148,23 @@ _nss_nisplus_parse_pwent (nis_result *result, size_t entry, struct passwd *pw,
 
 
 int
-_nss_nisplus_parse_grent (nis_result *result, u_long entry, struct group *gr,
+_nss_nisplus_parse_grent (nis_result *result, struct group *gr,
 			  char *buffer, size_t buflen, int *errnop)
 {
+  if ((result->status != NIS_SUCCESS && result->status != NIS_S_SUCCESS)
+      || __type_of(NIS_RES_OBJECT (result)) != NIS_ENTRY_OBJ
+      || strcmp (NIS_RES_OBJECT (result)[0].EN_data.en_type, "group_tbl") != 0
+      || NIS_RES_OBJECT (result)[0].EN_data.en_cols.en_cols_len < 4)
+    return 0;
+
+  nis_object *obj = NIS_RES_OBJECT (result);
   char *first_unused = buffer;
   size_t room_left = buflen;
   char *line;
   int count;
   size_t len;
 
-  if (result == NULL)
-    return 0;
-
-  if ((result->status != NIS_SUCCESS && result->status != NIS_S_SUCCESS)
-      || __type_of(NIS_RES_OBJECT (result)) != NIS_ENTRY_OBJ
-      || strcmp (NIS_RES_OBJECT (result)[entry].EN_data.en_type,
-		 "group_tbl") != 0
-      || NIS_RES_OBJECT (result)[entry].EN_data.en_cols.en_cols_len < 4)
-    return 0;
-
-  if (NISENTRYLEN (entry, 0, result) >= room_left)
+  if (NISOBJLEN (0, obj) >= room_left)
     {
       /* The line is too long for our buffer.  */
     no_more_room:
@@ -181,9 +172,8 @@ _nss_nisplus_parse_grent (nis_result *result, u_long entry, struct group *gr,
       return -1;
     }
 
-  strncpy (first_unused, NISENTRYVAL (entry, 0, result),
-	   NISENTRYLEN (entry, 0, result));
-  first_unused[NISENTRYLEN (entry, 0, result)] = '\0';
+  strncpy (first_unused, NISOBJVAL (0, obj), NISOBJLEN (0, obj));
+  first_unused[NISOBJLEN (0, obj)] = '\0';
   len = strlen (first_unused);
   if (len == 0) /* group table is corrupt */
     return 0;
@@ -191,20 +181,19 @@ _nss_nisplus_parse_grent (nis_result *result, u_long entry, struct group *gr,
   room_left -= len + 1;
   first_unused += len + 1;
 
-  if (NISENTRYLEN (entry, 1, result) >= room_left)
+  if (NISOBJLEN (1, obj) >= room_left)
     goto no_more_room;
 
-  strncpy (first_unused, NISENTRYVAL (entry, 1, result),
-	   NISENTRYLEN (entry, 1, result));
-  first_unused[NISENTRYLEN (entry, 1, result)] = '\0';
+  strncpy (first_unused, NISOBJVAL (1, obj), NISOBJLEN (1, obj));
+  first_unused[NISOBJLEN (1, obj)] = '\0';
   gr->gr_passwd = first_unused;
   len = strlen (first_unused);
   room_left -= len + 1;
   first_unused += len + 1;
 
-  char *numstr = NISENTRYVAL (entry, 2, result);
-  len = NISENTRYLEN (entry, 2, result);
-  if (len == 0 && numstr[len - 1] != '\0')
+  char *numstr = NISOBJVAL (2, obj);
+  len = NISOBJLEN (2, obj);
+  if (len == 0 || numstr[len - 1] != '\0')
     {
       if (len >= room_left)
 	goto no_more_room;
@@ -218,12 +207,11 @@ _nss_nisplus_parse_grent (nis_result *result, u_long entry, struct group *gr,
     return 0;
   gr->gr_gid = strtoul (numstr, NULL, 10);
 
-  if (NISENTRYLEN (entry, 3, result) >= room_left)
+  if (NISOBJLEN (3, obj) >= room_left)
     goto no_more_room;
 
-  strncpy (first_unused, NISENTRYVAL (entry, 3, result),
-	   NISENTRYLEN (entry, 3, result));
-  first_unused[NISENTRYLEN (entry, 3, result)] = '\0';
+  strncpy (first_unused, NISOBJVAL (3, obj), NISOBJLEN (3, obj));
+  first_unused[NISOBJLEN (3, obj)] = '\0';
   line = first_unused;
   len = strlen (line);
   room_left -= len + 1;
diff --git a/nis/nss_nisplus/nisplus-pwd.c b/nis/nss_nisplus/nisplus-pwd.c
index 7957e6a27d..93e37dddab 100644
--- a/nis/nss_nisplus/nisplus-pwd.c
+++ b/nis/nss_nisplus/nisplus-pwd.c
@@ -29,16 +29,21 @@
 #include "nss-nisplus.h"
 #include "nisplus-parser.h"
 #include <libnsl.h>
+#include <nis_intern.h>
+#include <nis_xdr.h>
 
 
 __libc_lock_define_initialized (static, lock)
 
-/* Previous result of iteration.  */
-static nis_result *result;
+/* Connection information.  */
+static ib_request *ibreq;
+static directory_obj *dir;
+static dir_binding bptr;
+static char *tablepath;
+static char *tableptr;
+/* Cursor.  */
+static netobj cursor;
 
-/* All results of batch table load.  */
-static nis_result *cached_results;
-static size_t cached_results_iter;
 
 nis_name pwd_tablename_val attribute_hidden;
 size_t pwd_tablename_len attribute_hidden;
@@ -80,50 +85,48 @@ _nss_pwd_create_tablename (int *errnop)
 static void
 internal_nisplus_endpwent (void)
 {
-  if (cached_results != NULL)
-    {
-      nis_freeresult (cached_results);
-      cached_results = NULL;
-      cached_results_iter = 0;
-    }
+  __nisbind_destroy (&bptr);
+  memset (&bptr, '\0', sizeof (bptr));
 
-  if (result != NULL)
-    {
-      nis_freeresult (result);
-      result = NULL;
-    }
+  nis_free_directory (dir);
+  dir = NULL;
+
+  nis_free_request (ibreq);
+  ibreq = NULL;
+
+  xdr_free ((xdrproc_t) xdr_netobj, (char *) &cursor);
+  memset (&cursor, '\0', sizeof (cursor));
+
+  free (tablepath);
+  tableptr = tablepath = NULL;
 }
 
 
 static enum nss_status
 internal_nisplus_setpwent (int *errnop)
 {
-  enum nss_status status;
+  enum nss_status status = NSS_STATUS_SUCCESS;
 
-  cached_results = nis_list (pwd_tablename_val, FOLLOW_PATH | FOLLOW_LINKS,
-			     NULL, NULL);
+  if (pwd_tablename_val == NULL)
+    status = _nss_pwd_create_tablename (errnop);
 
-  if (cached_results == NULL)
-    {
-      *errnop = errno;
-      status = NSS_STATUS_TRYAGAIN;
-    }
-  else if (__builtin_expect ((status = niserr2nss (cached_results->status))
-			     != NSS_STATUS_SUCCESS, 0))
-    {
-      nis_freeresult (cached_results);
-      cached_results = NULL;
-    }
-  else if (__builtin_expect (__type_of (NIS_RES_OBJECT (cached_results))
-			     != NIS_ENTRY_OBJ
-			     || strcmp (NIS_RES_OBJECT (cached_results)->EN_data.en_type,
-					"passwd_tbl") != 0
-			     || NIS_RES_OBJECT (cached_results)->EN_data.en_cols.en_cols_len < 7,
-			     0))
+  if (status == NSS_STATUS_SUCCESS)
     {
-      nis_freeresult (cached_results);
-      cached_results = NULL;
-      status = NSS_STATUS_NOTFOUND;
+      ibreq = __create_ib_request (pwd_tablename_val, 0);
+      if (ibreq == NULL)
+	{
+	  *errnop = errno;
+	  return NSS_STATUS_TRYAGAIN;
+	}
+
+      nis_error retcode = __prepare_niscall (pwd_tablename_val, &dir,
+					     &bptr, 0);
+      if (retcode != NIS_SUCCESS)
+	{
+	  nis_free_request (ibreq);
+	  ibreq = NULL;
+	  status = niserr2nss (retcode);
+	}
     }
 
   return status;
@@ -133,26 +136,15 @@ internal_nisplus_setpwent (int *errnop)
 enum nss_status
 _nss_nisplus_setpwent (int stayopen)
 {
-  enum nss_status status = NSS_STATUS_SUCCESS;
+  enum nss_status status;
 
   __libc_lock_lock (lock);
 
   internal_nisplus_endpwent ();
 
-  if (pwd_tablename_val == NULL)
-    {
-      // XXX We need to be able to set errno.  Pass in new parameter.
-      int err;
-      status = _nss_pwd_create_tablename (&err);
-    }
-
-  if (status == NSS_STATUS_SUCCESS
-      && (_nsl_default_nss () & NSS_FLAG_SETENT_BATCH_READ))
-    {
-      // XXX We need to be able to set errno.  Pass in new parameter.
-      int err;
-      status = internal_nisplus_setpwent (&err);
-    }
+  // XXX We need to be able to set errno.  Pass in new parameter.
+  int err;
+  status = internal_nisplus_setpwent (&err);
 
   __libc_lock_unlock (lock);
 
@@ -178,98 +170,104 @@ internal_nisplus_getpwent_r (struct passwd *pw, char *buffer, size_t buflen,
 			     int *errnop)
 {
   int parse_res = -1;
-  nis_result *saved_res = NULL;
+  enum nss_status retval = NSS_STATUS_SUCCESS;
 
   /* Get the next entry until we found a correct one. */
   do
     {
-      if (cached_results != NULL)
+      nis_error status;
+      nis_result result;
+      memset (&result, '\0', sizeof (result));
+
+      if (cursor.n_bytes == NULL)
 	{
-	handle_batch_read:
-	  /* See whether we reported the last problem.  */
-	  if (cached_results_iter >= NIS_RES_NUMOBJ (cached_results))
-	    return NSS_STATUS_NOTFOUND;
-
-	  parse_res = _nss_nisplus_parse_pwent (cached_results,
-						cached_results_iter, pw,
-						buffer, buflen, errnop);
+	  if (ibreq == NULL)
+	    {
+	      retval = internal_nisplus_setpwent (errnop);
+	      if (retval != NSS_STATUS_SUCCESS)
+		return retval;
+	    }
+
+	  status = __do_niscall3 (&bptr, NIS_IBFIRST,
+				  (xdrproc_t) _xdr_ib_request,
+				  (caddr_t) ibreq,
+				  (xdrproc_t) _xdr_nis_result,
+				  (caddr_t) &result,
+				  0, NULL);
 	}
       else
 	{
-	  if (result == NULL)
-	    {
-	      if (pwd_tablename_val == NULL)
-		{
-		  enum nss_status status = _nss_pwd_create_tablename (errnop);
-
-		  if (status != NSS_STATUS_SUCCESS)
-		    return status;
-		}
-
-	      /* Determine whether we should instead read all entries at
-		 once.  */
-	      if (_nsl_default_nss () & NSS_FLAG_SETENT_BATCH_READ)
-		{
-		  enum nss_status status = internal_nisplus_setpwent (errnop);
-
-		  if (status == NSS_STATUS_SUCCESS && cached_results != NULL)
-		    goto handle_batch_read;
-		}
-
-	      saved_res = NULL;
-
-	      result = nis_first_entry (pwd_tablename_val);
-	      if (result == NULL)
-		{
-		  *errnop = errno;
-		  return NSS_STATUS_TRYAGAIN;
-		}
-	      if (niserr2nss (result->status) != NSS_STATUS_SUCCESS)
-		return niserr2nss (result->status);
-	    }
-	  else
-	    {
-	      saved_res = result;
-	      result = nis_next_entry (pwd_tablename_val, &result->cookie);
-	      if (result == NULL)
-		{
-		  *errnop = errno;
-		  return NSS_STATUS_TRYAGAIN;
-		}
-	      if (niserr2nss (result->status) != NSS_STATUS_SUCCESS)
-		{
-		  nis_freeresult (saved_res);
-		  return niserr2nss (result->status);
-		}
-	    }
+	  ibreq->ibr_cookie.n_bytes = cursor.n_bytes;
+	  ibreq->ibr_cookie.n_len = cursor.n_len;
+
+	  status = __do_niscall3 (&bptr, NIS_IBNEXT,
+				  (xdrproc_t) _xdr_ib_request,
+				  (caddr_t) ibreq,
+				  (xdrproc_t) _xdr_nis_result,
+				  (caddr_t) &result,
+				  0, NULL);
+
+	  ibreq->ibr_cookie.n_bytes = NULL;
+	  ibreq->ibr_cookie.n_len = 0;
+	}
 
-	  parse_res = _nss_nisplus_parse_pwent_chk (result, pw, buffer,
-						    buflen, errnop);
+      if (status != NIS_SUCCESS)
+	return niserr2nss (status);
+
+      if (NIS_RES_STATUS (&result) == NIS_NOTFOUND)
+	{
+	  /* No more entries on this server.  This means we have to go
+	     to the next server on the path.  */
+	  status = __follow_path (&tablepath, &tableptr, ibreq, &bptr);
+	  if (status != NIS_SUCCESS)
+	    return niserr2nss (status);
+
+	  directory_obj *newdir = NULL;
+	  dir_binding newbptr;
+	  status = __prepare_niscall (ibreq->ibr_name, &newdir, &newbptr, 0);
+	  if (status != NIS_SUCCESS)
+	    return niserr2nss (status);
+
+	  nis_free_directory (dir);
+	  dir = newdir;
+	  __nisbind_destroy (&bptr);
+	  bptr = newbptr;
+
+	  xdr_free ((xdrproc_t) xdr_netobj, (char *) &result.cookie);
+	  result.cookie.n_bytes = NULL;
+	  result.cookie.n_len = 0;
+	  parse_res = 0;
+	  goto next;
 	}
+      else if (NIS_RES_STATUS (&result) != NIS_SUCCESS)
+	return niserr2nss (NIS_RES_STATUS (&result));
+
+      parse_res = _nss_nisplus_parse_pwent (&result, pw, buffer,
+					    buflen, errnop);
 
       if (__builtin_expect (parse_res == -1, 0))
 	{
-	  if (cached_results == NULL)
-	    {
-	      nis_freeresult (result);
-	      result = saved_res;
-	    }
 	  *errnop = ERANGE;
-	  return NSS_STATUS_TRYAGAIN;
+	  retval = NSS_STATUS_TRYAGAIN;
+	  goto freeres;
 	}
 
-      if (cached_results != NULL)
-	++cached_results_iter;
-      else
-	if (saved_res)
-	  {
-	    nis_freeresult (saved_res);
-	    saved_res = NULL;
-	  }
+    next:
+      /* Free the old cursor.  */
+      xdr_free ((xdrproc_t) xdr_netobj, (char *) &cursor);
+      /* Remember the new one.  */
+      cursor.n_bytes = result.cookie.n_bytes;
+      cursor.n_len = result.cookie.n_len;
+      /* Free the result structure.  NB: we do not remove the cookie.  */
+      result.cookie.n_bytes = NULL;
+      result.cookie.n_len = 0;
+    freeres:
+      xdr_free ((xdrproc_t) _xdr_nis_result, (char *) &result);
+      memset (&result, '\0', sizeof (result));
     }
   while (!parse_res);
 
-  return NSS_STATUS_SUCCESS;
+  return retval;
 }
 
 enum nss_status
@@ -331,8 +329,7 @@ _nss_nisplus_getpwnam_r (const char *name, struct passwd *pw,
       return status;
     }
 
-  parse_res = _nss_nisplus_parse_pwent_chk (result, pw, buffer, buflen,
-					    errnop);
+  parse_res = _nss_nisplus_parse_pwent (result, pw, buffer, buflen, errnop);
 
   nis_freeresult (result);
 
@@ -391,8 +388,7 @@ _nss_nisplus_getpwuid_r (const uid_t uid, struct passwd *pw,
       return status;
     }
 
-  parse_res = _nss_nisplus_parse_pwent_chk (result, pw, buffer, buflen,
-					    errnop);
+  parse_res = _nss_nisplus_parse_pwent (result, pw, buffer, buflen, errnop);
 
   nis_freeresult (result);