Update.cvs/libc-ud-970721

1997-07-22 01:35  Ulrich Drepper  <drepper@cygnus.com>

	* Makerules (+make-deps): Use $(CFLAGS) in run of $(+mkdep) so
	that optimizing is also selected for dependency generation.

	* configure.in: Add machine description for TI c[34]x.

	* inet/Makefile (routines): Remove ntohl and ntohs.
	* inet/netinet/in.h: Use optimized version of hton? and ntoh?
	for little endian machines.
	* sysdeps/alpha/ntohl.s: Removed.
	* sysdeps/alpha/ntohs.s: Removed.
	* sysdeps/generic/ntohl.c: Removed.
	* sysdeps/generic/ntohs.c: Removed.
	* sysdeps/generic/htonl.c: Add aliases for ntohl.
	* sysdeps/vax/htonl.s: Likewise.
	* sysdeps/generic/htons.c: Add aliases for ntohs.
	* sysdeps/vax/htons.s: Likewise.
	* sysdeps/vax/ntohl.s: Removed.
	* sysdeps/vax/ntohs.s: Removed.
	* sysdeps/generic/bits/htontoh.h: New file.
	* sysdeps/i386/htonl.S: New file.
	* sysdeps/i386/htons.S: New file.
	* sysdeps/i386/i486/htonl.S: New file.

	* sysdeps/i386/fpu/bits/mathinline.h: Correct and optimized compare
	macros.

	* sysdeps/mips/dl-machine.h: Remove mips64 dependent parts.
	* sysdeps/mips/mips64/dl-machine.h: New file.

	* sysdeps/unix/sysv/linux/Makefile (sysdep_headers): Don't install
	syscall-list.h.

1997-07-12  Andreas Jaeger  <aj@arthur.rhein-neckar.de>

	* libc.map: Add missing symbol _obstack.

1997-07-14 08:22  H.J. Lu  <hjl@gnu.ai.mit.edu>

	* sysdeps/mips/rtld-parms: New.

	* sysdeps/unix/sysv/linux/mips/lxstat.h: Moved to
	* sysdeps/unix/sysv/linux/mips/lxstat.c: ...this.

	* sysdeps/unix/sysv/linux/mips/sgidef.h: Moved to
	* sysdeps/unix/sysv/linux/mips/sgidefs.h: ...this.

	* sysdeps/generic/dl-sysdep.c (_start): Change to ENTRY_POINT.

1997-07-17 08:39  H.J. Lu  <hjl@gnu.ai.mit.edu>

	* sysdeps/mips/dl-machine.h: Remove extra stuff.

1997-07-06 07:18  Geoff Keating  <geoffk@ozemail.com.au>

	* sysdeps/powerpc/bits/endian.h: Handle multiple endianess.

	* stdlib/grouping.h: Suppress gcc warning about testing
	unsigned char for less-than-zero.
	* stdio-common/printf_fp.c: Likewise.
	* stdio-common/vfprintf.c: Likewise.

	* sysdeps/powerpc/add_n.s: New file.
	* sysdeps/powerpc/sub_n.s: New file.
	* sysdeps/powerpc/lshift.s: Ported XCOFF->ELF (from GMP).
	* sysdeps/powerpc/mul_1.s: Ported XCOFF->ELF (from GMP).
	* sysdeps/powerpc/addmul_1.s: Ported XCOFF->ELF (from GMP).
	* sysdeps/powerpc/submul_1.s: Ported XCOFF->ELF (from GMP).
	* sysdeps/powerpc/rshift.s: Ported XCOFF->ELF (from GMP).

	* math/libm-test.c (cos_test, sin_test, sincos_test): Use
	precomputed pi/6 rather than having gcc calculate it, otherwise
	tests give inaccurate result due to inaccurate input.
	* math/libm.map: Add __fe_*_env constants to list of exported
	symbols.

	* sysdeps/libm-ieee754/s_isinf.c: Simplify, make faster.
	* sysdeps/libm-ieee754/s_isinff.c: Simplify, make faster.
	* sysdeps/libm-ieee754/s_atan2f.c: Correct value of pi to be correct
	round-to-nearest value.

	* sysdeps/libm-ieee754/e_log.c: Make sure exceptions are raised.
	* sysdeps/libm-ieee754/e_log10.c: Likewise.
	* sysdeps/libm-ieee754/e_log10f.c: Likewise.
	* sysdeps/libm-ieee754/e_logf.c: Likewise.
	* sysdeps/libm-ieee754/s_log1p.c: Likewise. Also use correct -Inf.
	* sysdeps/libm-ieee754/s_log1pf.c: Likewise. Also use correct -Inf.
	* sysdeps/libm-ieee754/s_log2.c: Likewise.
	* sysdeps/libm-ieee754/s_log2f.c: Likewise.

1997-07-15 21:54  Thorsten Kukuk  <kukuk@vt.uni-paderborn.de>

	* nis/nss_compat/compat-grp.c: Fix "buffer to small" problems
	and memory leaks.
	* nis/nss_compat/compat-pwd.c: Likewise.
	* nis/nss_compat/compat-spwd.c: Likewise.
	* nis/nss_nis/nis-alias.c: Likewise.
	* nis/nss_nis/nis-ethers.c: Likewise.
	* nis/nss_nis/nis-grp.c: Likewise.
	* nis/nss_nis/nis-hosts.c: Likewise.
	* nis/nss_nis/nis-network.c: Likewise.
	* nis/nss_nis/nis-proto.c: Likewise.
	* nis/nss_nis/nis-pwd.c: Likewise.
	* nis/nss_nis/nis-rpc.c: Likewise.
	* nis/nss_nis/nis-service.c: Likewise.
	* nis/nss_nis/nis-spwd.c: Likewise.
	* nis/nss_nisplus-alias.c: Likewise.
	* nis/nss_nisplus-ethers.c: Likewise.
	* nis/nss_nisplus-grp.c: Likewise.
	* nis/nss_nisplus-hosts.c: Likewise.
	* nis/nss_nisplus-netgrp.c: Likewise.
	* nis/nss_nisplus-network.c: Likewise.
	* nis/nss_nisplus-proto.c: Likewise.
	* nis/nss_nisplus-pwd.c: Likewise.
	* nis/nss_nisplus-rpc.c: Likewise.
	* nis/nss_nisplus-service.c: Likewise.
	* nis/nss_nisplus-spwd.c: Likewise.

	* nis/nss_nisplus-parse.c: If buffer to small, give -1 back.

1997-07-20  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* sysdeps/m68k/dl-machine.h (elf_machine_rela): Mention program
	name in warning message.
	* sysdeps/powerpc/dl-machine.h (elf_machine_rela): Likewise.
	* sysdeps/sparc/dl-machine.h (elf_machine_rela): Likewise.
	* sysdeps/sparc64/dl-machine.h (elf_machine_rela): Likewise.

	* sysdeps/i386/dl-machine.h (elf_machine_rel): Print program name
	first.

1997-07-20 19:33  Thorsten Kukuk  <kukuk@vt.uni-paderborn.de>

	* libc.map: Add _null_auth and _seterr_reply.

	* sunrpc/clnt_udp.c (clntudp_call): If xargs is NULL, don't encode it.

25 files changed, 645 insertions, 334 deletions

diff --git a/nis/nss_compat/compat-grp.c b/nis/nss_compat/compat-grp.c
index 59165ea590..9726784b2d 100644
--- a/nis/nss_compat/compat-grp.c
+++ b/nis/nss_compat/compat-grp.c
@@ -218,6 +218,10 @@ getgrent_next_nis (struct group *result, ent_t *ent, char *buffer,
 
   do
     {
+      char *save_oldkey;
+      int save_oldlen;
+      bool_t save_nis_first;
+
       if (ent->nis_first)
 	{
 	  if (yp_first (domain, "group.byname", &outkey, &outkeylen,
@@ -226,7 +230,9 @@ getgrent_next_nis (struct group *result, ent_t *ent, char *buffer,
 	      ent->nis = 0;
 	      return NSS_STATUS_UNAVAIL;
 	    }
-
+	  save_oldkey = ent->oldkey;
+	  save_oldlen = ent->oldkeylen;
+	  save_nis_first = TRUE;
 	  ent->oldkey = outkey;
 	  ent->oldkeylen = outkeylen;
 	  ent->nis_first = FALSE;
@@ -241,7 +247,9 @@ getgrent_next_nis (struct group *result, ent_t *ent, char *buffer,
 	      return NSS_STATUS_NOTFOUND;
 	    }
 
-	  free (ent->oldkey);
+	  save_oldkey = ent->oldkey;
+	  save_oldlen = ent->oldkeylen;
+	  save_nis_first = FALSE;
 	  ent->oldkey = outkey;
 	  ent->oldkeylen = outkeylen;
 	}
@@ -255,8 +263,21 @@ getgrent_next_nis (struct group *result, ent_t *ent, char *buffer,
       while (isspace (*p))
 	++p;
 
-      parse_res = _nss_files_parse_grent (p, result, data, buflen);
-
+      if ((parse_res = _nss_files_parse_grent (p, result, data, buflen)) == -1)
+	{
+	  free (ent->oldkey);
+	  ent->oldkey = save_oldkey;
+	  ent->oldkeylen = save_oldlen;
+	  ent->nis_first = save_nis_first;
+	  __set_errno (ERANGE);
+	  return NSS_STATUS_TRYAGAIN;
+	}
+      else
+	{
+	  if (!save_nis_first)
+	    free (save_oldkey);
+	}
+      
       if (parse_res &&
 	  in_blacklist (result->gr_name, strlen (result->gr_name), ent))
 	parse_res = 0; /* if result->gr_name in blacklist,search next entry */
@@ -274,8 +295,13 @@ getgrent_next_nisplus (struct group *result, ent_t *ent, char *buffer,
 
   do
     {
+      nis_result *save_oldres;
+      bool_t save_nis_first;
+      
       if (ent->nis_first)
         {
+	  save_oldres = ent->result;
+	  save_nis_first = TRUE;
           ent->result = nis_first_entry(grptable);
           if (niserr2nss (ent->result->status) != NSS_STATUS_SUCCESS)
             {
@@ -288,8 +314,9 @@ getgrent_next_nisplus (struct group *result, ent_t *ent, char *buffer,
         {
           nis_result *res;
 
+	  save_oldres = ent->result;
+	  save_nis_first = FALSE;
           res = nis_next_entry(grptable, &ent->result->cookie);
-          nis_freeresult (ent->result);
           ent->result = res;
           if (niserr2nss (ent->result->status) != NSS_STATUS_SUCCESS)
             {
@@ -297,8 +324,21 @@ getgrent_next_nisplus (struct group *result, ent_t *ent, char *buffer,
 	      return niserr2nss (ent->result->status);
             }
         }
-      parse_res = _nss_nisplus_parse_grent (ent->result, 0, result, buffer,
-                                            buflen);
+      if ((parse_res = _nss_nisplus_parse_grent (ent->result, 0, result, 
+						 buffer, buflen)) == -1)
+	{
+	  nis_freeresult (ent->result);
+	  ent->result = save_oldres;
+	  ent->nis_first = save_nis_first;
+	  __set_errno (ERANGE);
+	  return NSS_STATUS_TRYAGAIN;
+	}
+      else
+	{
+	  if (!save_nis_first)
+	    nis_freeresult (save_oldres);
+	}
+
       if (parse_res &&
           in_blacklist (result->gr_name, strlen (result->gr_name), ent))
         parse_res = 0; /* if result->gr_name in blacklist,search next entry */
@@ -330,7 +370,13 @@ getgrent_next_file_plusgroup (struct group *result, char *buffer,
           nis_freeresult (res);
           return status;
         }
-      parse_res = _nss_nisplus_parse_grent (res, 0, result, buffer, buflen);
+      if ((parse_res = _nss_nisplus_parse_grent (res, 0, result, buffer, 
+						 buflen)) == -1)
+	{
+	  __set_errno (ERANGE);
+	  nis_freeresult (res);
+	  return NSS_STATUS_TRYAGAIN;
+	}
       nis_freeresult (res);
     }
   else /* Use NIS */
@@ -350,7 +396,11 @@ getgrent_next_file_plusgroup (struct group *result, char *buffer,
       free (outval);
       while (isspace (*p))
         p++;
-      parse_res = _nss_files_parse_grent (p, result, data, buflen);
+      if ((parse_res = _nss_files_parse_grent (p, result, data, buflen)) == -1)
+	{
+	  __set_errno (ERANGE);
+	  return NSS_STATUS_TRYAGAIN;
+	}
     }
 
   if (parse_res)
@@ -368,13 +418,24 @@ getgrent_next_file (struct group *result, ent_t *ent,
   struct parser_data *data = (void *) buffer;
   while (1)
     {
+      fpos_t pos;
+      int parse_res = 0;
       char *p;
 
       do
 	{
+	  fgetpos (ent->stream, &pos);
 	  p = fgets (buffer, buflen, ent->stream);
 	  if (p == NULL)
-	    return NSS_STATUS_NOTFOUND;
+	    {
+	      if (feof (ent->stream))
+		return NSS_STATUS_NOTFOUND;
+	      else
+		{
+		  __set_errno (ERANGE);
+		  return NSS_STATUS_TRYAGAIN;
+		}
+	    }
 
 	  /* Terminate the line for any case.  */
 	  buffer[buflen - 1] = '\0';
@@ -383,11 +444,18 @@ getgrent_next_file (struct group *result, ent_t *ent,
 	  while (isspace (*p))
 	    ++p;
 	}
-      /* Ignore empty and comment lines.  */
-      while (*p == '\0' || *p == '#' ||
+      while (*p == '\0' || *p == '#' || /* Ignore empty and comment lines. */
       /* Parse the line.  If it is invalid, loop to
          get the next line of the file to parse.  */
-	     !_nss_files_parse_grent (p, result, data, buflen));
+	     !(parse_res = _nss_files_parse_grent (p, result, data, buflen)));
+
+      if (parse_res == -1)
+	{
+	  /* The parser ran out of space.  */
+	  fsetpos (ent->stream, &pos);
+	  __set_errno (ERANGE);
+	  return NSS_STATUS_TRYAGAIN;
+	}
 
       if (result->gr_name[0] != '+' && result->gr_name[0] != '-')
 	/* This is a real entry.  */
diff --git a/nis/nss_compat/compat-pwd.c b/nis/nss_compat/compat-pwd.c
index 0d0f2a6c33..af1267922c 100644
--- a/nis/nss_compat/compat-pwd.c
+++ b/nis/nss_compat/compat-pwd.c
@@ -272,6 +272,9 @@ internal_endpwent (ent_t *ent)
       ent->stream = NULL;
     }
 
+  if (ent->netgroup)
+    __internal_endnetgrent (&ent->netgrdata);
+  
   ent->nis = ent->first = ent->netgroup = 0;
 
   if (ent->oldkey != NULL)
@@ -303,9 +306,6 @@ _nss_compat_endpwent (void)
 
   __libc_lock_lock (lock);
 
-  if (ext_ent.netgroup)
-    __internal_endnetgrent (&ext_ent.netgrdata);
-
   result = internal_endpwent (&ext_ent);
 
   __libc_lock_unlock (lock);
@@ -339,6 +339,10 @@ getpwent_next_nis_netgr (struct passwd *result, ent_t *ent, char *group,
 
   while (1)
     {
+      char *saved_cursor;
+      int parse_res;
+
+      saved_cursor = ent->netgrdata.cursor;
       status = __internal_getnetgrent_r (&host, &user, &domain,
 					 &ent->netgrdata, buffer, buflen);
       if (status != 1)
@@ -372,7 +376,13 @@ getpwent_next_nis_netgr (struct passwd *result, ent_t *ent, char *group,
       while (isspace (*p))
 	p++;
       free (outval);
-      if (_nss_files_parse_pwent (p, result, data, buflen))
+      if ((parse_res = _nss_files_parse_pwent (p, result, data, buflen)) == -1)
+	{
+	  ent->netgrdata.cursor = saved_cursor;
+	  return NSS_STATUS_TRYAGAIN;
+	}
+
+      if (parse_res)
 	{
 	  copy_pwd_changes (result, &ent->pwd, p2, p2len);
 	  break;
@@ -410,6 +420,9 @@ getpwent_next_nisplus_netgr (struct passwd *result, ent_t *ent, char *group,
 
   while (1)
     {
+      char *saved_cursor;
+
+      saved_cursor = ent->netgrdata.cursor;
       status = __internal_getnetgrent_r (&host, &user, &domain,
 					 &ent->netgrdata, buffer, buflen);
       if (status != 1)
@@ -419,13 +432,13 @@ getpwent_next_nisplus_netgr (struct passwd *result, ent_t *ent, char *group,
 	  give_pwd_free (&ent->pwd);
 	  return NSS_STATUS_RETURN;
 	}
-
+      
       if (user == NULL || user[0] == '-')
 	continue;
-
+      
       if (domain != NULL && strcmp (ypdomain, domain) != 0)
 	continue;
-
+      
       p2len = pwd_need_buflen (&ent->pwd);
       if (p2len > buflen)
 	{
@@ -444,7 +457,13 @@ getpwent_next_nisplus_netgr (struct passwd *result, ent_t *ent, char *group,
 	  nis_freeresult (nisres);
 	  continue;
 	}
-      parse_res = _nss_nisplus_parse_pwent (nisres, result, buffer, buflen);
+      if ((parse_res = _nss_nisplus_parse_pwent (nisres, result, buffer, 
+						 buflen)) == -1)
+	{
+	  nis_freeresult (nisres);
+	  ent->netgrdata.cursor = saved_cursor;
+	  return NSS_STATUS_TRYAGAIN;
+	}
       nis_freeresult (nisres);
 
       if (parse_res)
@@ -485,8 +504,14 @@ getpwent_next_nisplus (struct passwd *result, ent_t *ent, char *buffer,
   buflen -= p2len;
   do
     {
+      bool_t saved_first;
+      nis_result *saved_res;
+
       if (ent->first)
 	{
+	  saved_first = TRUE;
+	  saved_res = ent->result;
+
 	  ent->result = nis_first_entry(pwdtable);
           if (niserr2nss (ent->result->status) != NSS_STATUS_SUCCESS)
 	    {
@@ -501,17 +526,32 @@ getpwent_next_nisplus (struct passwd *result, ent_t *ent, char *buffer,
 	  nis_result *res;
 
 	  res = nis_next_entry(pwdtable, &ent->result->cookie);
-	  nis_freeresult (ent->result);
+	  saved_res = ent->result;
+	  saved_first = FALSE;
 	  ent->result = res;
 	  if (niserr2nss (ent->result->status) != NSS_STATUS_SUCCESS)
 	    {
 	      ent->nis = 0;
+	      nis_freeresult (saved_res);
 	      give_pwd_free (&ent->pwd);
 	      return niserr2nss (ent->result->status);
 	    }
 	}
-      parse_res = _nss_nisplus_parse_pwent (ent->result, result, buffer,
-					    buflen);
+      if ((parse_res = _nss_nisplus_parse_pwent (ent->result, result, buffer,
+						 buflen)) == -1)
+	{
+	  nis_freeresult (ent->result);
+	  ent->result = saved_res;
+	  ent->first = saved_first;
+	  __set_errno (ERANGE);
+	  return NSS_STATUS_TRYAGAIN;
+	}
+      else
+	{
+	  if (!saved_first)
+	    nis_freeresult (saved_res);
+	}
+      
       if (parse_res &&
 	  in_blacklist (result->pw_name, strlen (result->pw_name), ent))
 	parse_res = 0; /* if result->pw_name in blacklist,search next entry */
@@ -549,6 +589,10 @@ getpwent_next_nis (struct passwd *result, ent_t *ent, char *buffer,
   buflen -= p2len;
   do
     {
+      bool_t saved_first;
+      char *saved_oldkey;
+      int saved_oldlen;
+      
       if (ent->first)
 	{
 	  if (yp_first (domain, "passwd.byname", &outkey, &outkeylen,
@@ -558,7 +602,10 @@ getpwent_next_nis (struct passwd *result, ent_t *ent, char *buffer,
 	      give_pwd_free (&ent->pwd);
 	      return NSS_STATUS_UNAVAIL;
 	    }
-
+	  
+	  saved_first = TRUE;
+	  saved_oldkey = ent->oldkey;
+	  saved_oldlen = ent->oldkeylen;
 	  ent->oldkey = outkey;
 	  ent->oldkeylen = outkeylen;
 	  ent->first = FALSE;
@@ -574,7 +621,9 @@ getpwent_next_nis (struct passwd *result, ent_t *ent, char *buffer,
 	      return NSS_STATUS_NOTFOUND;
 	    }
 
-	  free (ent->oldkey);
+	  saved_first = FALSE;
+	  saved_oldkey = ent->oldkey;
+	  saved_oldlen = ent->oldkeylen;
 	  ent->oldkey = outkey;
 	  ent->oldkeylen = outkeylen;
 	}
@@ -587,7 +636,20 @@ getpwent_next_nis (struct passwd *result, ent_t *ent, char *buffer,
 
       while (isspace (*p))
 	++p;
-      parse_res = _nss_files_parse_pwent (p, result, data, buflen);
+      if ((parse_res = _nss_files_parse_pwent (p, result, data, buflen)) == -1)
+	{
+	  free (ent->oldkey);
+	  ent->oldkey = saved_oldkey;
+	  ent->oldkeylen = saved_oldlen;
+	  ent->first = saved_first;
+	  __set_errno (ERANGE);
+	  return NSS_STATUS_TRYAGAIN;
+	}
+      else
+	{
+	  if (!saved_first)
+	    free (saved_oldkey);
+	}
       if (parse_res &&
 	  in_blacklist (result->pw_name, strlen (result->pw_name), ent))
 	parse_res = 0;
@@ -637,7 +699,13 @@ getpwent_next_file_plususer (struct passwd *result, char *buffer,
 	  nis_freeresult (res);
 	  return status;
 	}
-      parse_res = _nss_nisplus_parse_pwent (res, result, buffer, buflen);
+      if ((parse_res = _nss_nisplus_parse_pwent (res, result, buffer, 
+						 buflen)) == -1)
+	{
+	  nis_freeresult (res);
+	  __set_errno (ERANGE);
+	  return NSS_STATUS_TRYAGAIN;
+	}
       nis_freeresult (res);
     }
   else /* Use NIS */
@@ -645,10 +713,10 @@ getpwent_next_file_plususer (struct passwd *result, char *buffer,
       char *domain;
       char *outval;
       int outvallen;
-
+      
       if (yp_get_default_domain (&domain) != YPERR_SUCCESS)
 	return NSS_STATUS_TRYAGAIN;
-
+      
       if (yp_match (domain, "passwd.byname", &result->pw_name[1],
 		    strlen (result->pw_name) - 1, &outval, &outvallen)
 	  != YPERR_SUCCESS)
@@ -658,10 +726,14 @@ getpwent_next_file_plususer (struct passwd *result, char *buffer,
       free (outval);
       while (isspace (*p))
 	p++;
-      parse_res = _nss_files_parse_pwent (p, result, data, buflen);
+      if ((parse_res = _nss_files_parse_pwent (p, result, data, buflen)) == -1)
+	{
+	  __set_errno (ERANGE);
+	  return NSS_STATUS_TRYAGAIN;
+	}
     }
 
-  if (parse_res)
+  if (parse_res > 0)
     {
       copy_pwd_changes (result, &pwd, p, plen);
       give_pwd_free (&pwd);
@@ -684,10 +756,13 @@ getpwent_next_file (struct passwd *result, ent_t *ent,
   struct parser_data *data = (void *) buffer;
   while (1)
     {
+      fpos_t pos;
       char *p;
+      int parse_res;
 
       do
 	{
+	  fgetpos (ent->stream, &pos);
 	  p = fgets (buffer, buflen, ent->stream);
 	  if (p == NULL)
 	    return NSS_STATUS_NOTFOUND;
@@ -702,7 +777,15 @@ getpwent_next_file (struct passwd *result, ent_t *ent,
       while (*p == '\0' || *p == '#' || /* Ignore empty and comment lines.  */
       /* Parse the line.  If it is invalid, loop to
          get the next line of the file to parse.  */
-	     !_nss_files_parse_pwent (p, result, data, buflen));
+	     !(parse_res = _nss_files_parse_pwent (p, result, data, buflen)));
+
+      if (parse_res == -1)
+	{
+	  /* The parser ran out of space.  */
+	  fsetpos (ent->stream, &pos);
+	  __set_errno (ERANGE);
+	  return NSS_STATUS_TRYAGAIN;
+	}
 
       if (result->pw_name[0] != '+' && result->pw_name[0] != '-')
 	/* This is a real entry.  */
diff --git a/nis/nss_compat/compat-spwd.c b/nis/nss_compat/compat-spwd.c
index 4199baf202..61a703c1ea 100644
--- a/nis/nss_compat/compat-spwd.c
+++ b/nis/nss_compat/compat-spwd.c
@@ -292,6 +292,10 @@ getspent_next_nis_netgr (struct spwd *result, ent_t *ent, char *group,
 
   while (1)
     {
+      char *saved_cursor;
+      int parse_res;
+
+      saved_cursor = ent->netgrdata.cursor;
       status = __internal_getnetgrent_r (&host, &user, &domain,
 					 &ent->netgrdata, buffer, buflen);
       if (status != 1)
@@ -301,10 +305,10 @@ getspent_next_nis_netgr (struct spwd *result, ent_t *ent, char *group,
 	  give_spwd_free (&ent->pwd);
 	  return NSS_STATUS_RETURN;
 	}
-
+      
       if (user == NULL || user[0] == '-')
 	continue;
-
+      
       if (domain != NULL && strcmp (ypdomain, domain) != 0)
 	continue;
 
@@ -325,7 +329,13 @@ getspent_next_nis_netgr (struct spwd *result, ent_t *ent, char *group,
       while (isspace (*p))
 	p++;
       free (outval);
-      if (_nss_files_parse_spent (p, result, data, buflen))
+      if ((parse_res = _nss_files_parse_spent (p, result, data, buflen)) == -1)
+	{
+	  ent->netgrdata.cursor = saved_cursor;
+	  return NSS_STATUS_TRYAGAIN;
+	}
+
+      if (parse_res)
 	{
 	  copy_spwd_changes (result, &ent->pwd, p2, p2len);
 	  break;
@@ -363,6 +373,9 @@ getspent_next_nisplus_netgr (struct spwd *result, ent_t *ent, char *group,
 
   while (1)
     {
+      char *saved_cursor;
+
+      saved_cursor = ent->netgrdata.cursor;
       status = __internal_getnetgrent_r (&host, &user, &domain,
                                          &ent->netgrdata, buffer, buflen);
       if (status != 1)
@@ -397,7 +410,12 @@ getspent_next_nisplus_netgr (struct spwd *result, ent_t *ent, char *group,
           nis_freeresult (nisres);
           continue;
         }
-      parse_res = _nss_nisplus_parse_spent (nisres, result, buffer, buflen);
+      if ((parse_res = _nss_nisplus_parse_spent (nisres, result, buffer,
+						 buflen)) == -1)
+	{
+	  nis_freeresult (nisres);
+	  return NSS_STATUS_TRYAGAIN;
+	}
       nis_freeresult (nisres);
 
       if (parse_res)
@@ -438,8 +456,14 @@ getspent_next_nisplus (struct spwd *result, ent_t *ent, char *buffer,
   buflen -= p2len;
   do
     {
+      bool_t saved_first;
+      nis_result *saved_res;
+
       if (ent->first)
         {
+	  saved_first = TRUE;
+	  saved_res = ent->result;
+
           ent->result = nis_first_entry(pwdtable);
           if (niserr2nss (ent->result->status) != NSS_STATUS_SUCCESS)
             {
@@ -453,18 +477,33 @@ getspent_next_nisplus (struct spwd *result, ent_t *ent, char *buffer,
         {
           nis_result *res;
 
+	  saved_first = FALSE;
+	  saved_res = ent->result;
+
           res = nis_next_entry(pwdtable, &ent->result->cookie);
-          nis_freeresult (ent->result);
           ent->result = res;
           if (niserr2nss (ent->result->status) != NSS_STATUS_SUCCESS)
             {
+	      nis_freeresult (saved_res);
 	      ent->nis = 0;
 	      give_spwd_free (&ent->pwd);
 	      return niserr2nss (ent->result->status);
             }
         }
-      parse_res = _nss_nisplus_parse_spent (ent->result, result, buffer,
-                                            buflen);
+      if ((parse_res = _nss_nisplus_parse_spent (ent->result, result, buffer,
+						 buflen)) == -1)
+	{
+	  ent->first = saved_first;
+	  nis_freeresult (ent->result);
+	  ent->result = saved_res;
+	  __set_errno (ERANGE);
+	  return NSS_STATUS_TRYAGAIN;
+	}
+      else
+	{
+	  if (!saved_first)
+	    nis_freeresult (saved_res);
+	}
       if (parse_res &&
           in_blacklist (result->sp_namp, strlen (result->sp_namp), ent))
         parse_res = 0; /* if result->pw_name in blacklist,search next entry */
@@ -503,6 +542,10 @@ getspent_next_nis (struct spwd *result, ent_t *ent,
   buflen -= p2len;
   do
     {
+      bool_t saved_first;
+      char *saved_oldkey;
+      int saved_oldlen;
+
       if (ent->first)
 	{
 	  if (yp_first (domain, "shadow.byname", &outkey, &outkeylen,
@@ -512,7 +555,9 @@ getspent_next_nis (struct spwd *result, ent_t *ent,
 	      give_spwd_free (&ent->pwd);
 	      return NSS_STATUS_UNAVAIL;
 	    }
-
+	  saved_first = TRUE;
+	  saved_oldkey = ent->oldkey;
+	  saved_oldlen = ent->oldkeylen;
 	  ent->oldkey = outkey;
 	  ent->oldkeylen = outkeylen;
 	  ent->first = FALSE;
@@ -528,7 +573,9 @@ getspent_next_nis (struct spwd *result, ent_t *ent,
 	      return NSS_STATUS_NOTFOUND;
 	    }
 
-	  free (ent->oldkey);
+	  saved_first = FALSE;
+	  saved_oldkey = ent->oldkey;
+	  saved_oldlen = ent->oldkeylen;
 	  ent->oldkey = outkey;
 	  ent->oldkeylen = outkeylen;
 	}
@@ -541,7 +588,20 @@ getspent_next_nis (struct spwd *result, ent_t *ent,
 
       while (isspace (*p))
 	++p;
-      parse_res = _nss_files_parse_spent (p, result, data, buflen);
+      if ((parse_res = _nss_files_parse_spent (p, result, data, buflen)) == -1)
+	{
+	  free (ent->oldkey);
+	  ent->oldkey = saved_oldkey;
+	  ent->oldkeylen = saved_oldlen;
+	  ent->first = saved_first;
+	  __set_errno (ERANGE);
+	  return NSS_STATUS_TRYAGAIN;
+	}
+      else
+	{
+	  if (!saved_first)
+	    free (saved_oldkey);
+	}
       if (parse_res &&
           in_blacklist (result->sp_namp, strlen (result->sp_namp), ent))
         parse_res = 0;
@@ -591,7 +651,12 @@ getspent_next_file_plususer (struct spwd *result, char *buffer,
           nis_freeresult (res);
           return status;
         }
-      parse_res = _nss_nisplus_parse_spent (res, result, buffer, buflen);
+      if ((parse_res = _nss_nisplus_parse_spent (res, result, buffer, 
+						 buflen)) == -1)
+	{
+	  nis_freeresult (res);
+	  return NSS_STATUS_TRYAGAIN;
+	}
       nis_freeresult (res);
     }
   else /* Use NIS */
@@ -612,7 +677,8 @@ getspent_next_file_plususer (struct spwd *result, char *buffer,
       free (outval);
       while (isspace (*p))
         p++;
-      parse_res = _nss_files_parse_spent (p, result, data, buflen);
+      if ((parse_res = _nss_files_parse_spent (p, result, data, buflen)) == -1)
+	return NSS_STATUS_TRYAGAIN;
     }
 
   if (parse_res)
@@ -638,10 +704,13 @@ getspent_next_file (struct spwd *result, ent_t *ent,
   struct parser_data *data = (void *) buffer;
   while (1)
     {
+      fpos_t pos;
+      int parse_res = 0;
       char *p;
 
       do
 	{
+	  fgetpos (ent->stream, &pos);
 	  p = fgets (buffer, buflen, ent->stream);
 	  if (p == NULL)
 	    return NSS_STATUS_NOTFOUND;
@@ -656,8 +725,17 @@ getspent_next_file (struct spwd *result, ent_t *ent,
       while (*p == '\0' || *p == '#'	/* Ignore empty and comment lines.  */
       /* Parse the line.  If it is invalid, loop to
          get the next line of the file to parse.  */
-	     || !_nss_files_parse_spent (p, result, data, buflen));
+	     || !(parse_res = _nss_files_parse_spent (p, result, data,
+						      buflen)));
 
+      if (parse_res == -1)
+        {
+          /* The parser ran out of space.  */
+          fsetpos (ent->stream, &pos);
+          __set_errno (ERANGE);
+          return NSS_STATUS_TRYAGAIN;
+        }
+      
       if (result->sp_namp[0] != '+' && result->sp_namp[0] != '-')
 	/* This is a real entry.  */
 	break;
diff --git a/nis/nss_nis/nis-alias.c b/nis/nss_nis/nis-alias.c
index 80c49ff5dd..e187716bb0 100644
--- a/nis/nss_nis/nis-alias.c
+++ b/nis/nss_nis/nis-alias.c
@@ -184,9 +184,10 @@ internal_nis_getaliasent_r (struct aliasent *alias, char *buffer,
         ++p;
       free (result);
 
-      parse_res = _nss_nis_parse_aliasent (outkey, p, alias, buffer, buflen);
-      if (parse_res == -1)
+      if ((parse_res = _nss_nis_parse_aliasent (outkey, p, alias, 
+						buffer, buflen)) == -1)
 	{
+	  free (outkey);
 	  __set_errno (ERANGE);
 	  return NSS_STATUS_TRYAGAIN;
 	}
@@ -258,12 +259,12 @@ _nss_nis_getaliasbyname_r (const char *name, struct aliasent *alias,
   free (result);
 
   alias->alias_local = 0;
-  parse_res = _nss_nis_parse_aliasent (name, p, alias, buffer, buflen);
-  if (parse_res == -1)
+  if ((parse_res = _nss_nis_parse_aliasent (name, p, alias, buffer, 
+					    buflen)) == -1)
     return NSS_STATUS_TRYAGAIN;
+  
+  if (parse_res)
+    return NSS_STATUS_SUCCESS;
   else
-    if (parse_res == 0)
-      return NSS_STATUS_NOTFOUND;
-    else
-      return NSS_STATUS_SUCCESS;
+    return NSS_STATUS_NOTFOUND;
 }
diff --git a/nis/nss_nis/nis-ethers.c b/nis/nss_nis/nis-ethers.c
index 149910bfab..e54262409c 100644
--- a/nis/nss_nis/nis-ethers.c
+++ b/nis/nss_nis/nis-ethers.c
@@ -159,17 +159,16 @@ internal_nis_getetherent_r (struct ether *eth, char *buffer, size_t buflen)
       if (next == NULL)
 	return NSS_STATUS_NOTFOUND;
       p = strcpy (buffer, next->val);
-      next = next->next;
 
       while (isspace (*p))
         ++p;
 
-      parse_res = _nss_files_parse_etherent (p, eth, data, buflen);
-      if (!parse_res && errno == ERANGE)
-        return NSS_STATUS_TRYAGAIN;
+      if ((parse_res = _nss_files_parse_etherent (p, eth, data, buflen)) == -1)
+	return NSS_STATUS_TRYAGAIN;
+      next = next->next;
     }
   while (!parse_res);
-
+  
   return NSS_STATUS_SUCCESS;
 }
 
@@ -228,15 +227,11 @@ _nss_nis_gethostton_r (const char *name, struct ether *eth,
     ++p;
   free (result);
 
-  parse_res = _nss_files_parse_etherent (p, eth, data, buflen);
+  if ((parse_res = _nss_files_parse_etherent (p, eth, data, buflen)) == -1)
+    return NSS_STATUS_TRYAGAIN;
 
   if (!parse_res)
-    {
-      if (errno == ERANGE)
-        return NSS_STATUS_TRYAGAIN;
-      else
-        return NSS_STATUS_NOTFOUND;
-    }
+    return NSS_STATUS_NOTFOUND;
   else
     return NSS_STATUS_SUCCESS;
 }
@@ -291,15 +286,11 @@ _nss_nis_getntohost_r (struct ether_addr *addr, struct ether *eth,
     ++p;
   free (result);
 
-  parse_res = _nss_files_parse_etherent (p, eth, data, buflen);
+  if ((parse_res = _nss_files_parse_etherent (p, eth, data, buflen)) == -1)
+    return NSS_STATUS_TRYAGAIN;
 
   if (!parse_res)
-    {
-      if (errno == ERANGE)
-        return NSS_STATUS_TRYAGAIN;
-      else
-        return NSS_STATUS_NOTFOUND;
-    }
+    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
index 9577499670..7897e21881 100644
--- a/nis/nss_nis/nis-grp.c
+++ b/nis/nss_nis/nis-grp.c
@@ -121,9 +121,11 @@ internal_nis_getgrent_r (struct group *grp, char *buffer, size_t buflen)
         ++p;
       free (result);
 
-      parse_res = _nss_files_parse_grent (p, grp, data, buflen);
-      if (parse_res < 1 && errno == ERANGE)
-        return NSS_STATUS_TRYAGAIN;
+      if ((parse_res = _nss_files_parse_grent (p, grp, data, buflen)) == -1)
+	{
+	  free (outkey);
+	  return NSS_STATUS_TRYAGAIN;
+	}
 
       free (oldkey);
       oldkey = outkey;
@@ -190,17 +192,13 @@ _nss_nis_getgrnam_r (const char *name, struct group *grp,
     ++p;
   free (result);
 
-  parse_res = _nss_files_parse_grent (p, grp, data, buflen);
+  if ((parse_res = _nss_files_parse_grent (p, grp, data, buflen)) == -1)
+    return NSS_STATUS_TRYAGAIN;
 
-  if (parse_res < 1)
-    {
-      if (errno == ERANGE)
-        return NSS_STATUS_TRYAGAIN;
-      else
-        return NSS_STATUS_NOTFOUND;
-    }
-  else
+  if (parse_res)
     return NSS_STATUS_SUCCESS;
+  else
+    return NSS_STATUS_NOTFOUND;
 }
 
 enum nss_status
@@ -241,15 +239,11 @@ _nss_nis_getgrgid_r (gid_t gid, struct group *grp,
     ++p;
   free (result);
 
-  parse_res = _nss_files_parse_grent (p, grp, data, buflen);
+  if ((parse_res = _nss_files_parse_grent (p, grp, data, buflen)) == -1)
+    return NSS_STATUS_TRYAGAIN;
 
-  if (parse_res < 1)
-    {
-      if (errno == ERANGE)
-        return NSS_STATUS_TRYAGAIN;
-      else
-        return NSS_STATUS_NOTFOUND;
-    }
-  else
+  if (parse_res)
     return NSS_STATUS_SUCCESS;
+  else
+    return NSS_STATUS_NOTFOUND;
 }
diff --git a/nis/nss_nis/nis-hosts.c b/nis/nss_nis/nis-hosts.c
index d26b4f5ccc..da7cef5ada 100644
--- a/nis/nss_nis/nis-hosts.c
+++ b/nis/nss_nis/nis-hosts.c
@@ -199,9 +199,9 @@ internal_nis_gethostent_r (struct hostent *host, char *buffer,
 	++p;
       free (result);
 
-      parse_res = parse_line (p, host, data, buflen);
-      if (!parse_res && errno == ERANGE)
+      if ((parse_res = parse_line (p, host, data, buflen)) == -1)
 	{
+	  free (outkey);
 	  *h_errnop = NETDB_INTERNAL;;
 	  return NSS_STATUS_TRYAGAIN;
 	}
@@ -287,9 +287,9 @@ _nss_nis_gethostbyname2_r (const char *name, int af, struct hostent *host,
 
   parse_res = parse_line (p, host, data, buflen);
 
-  if (!parse_res || host->h_addrtype != af)
+  if (parse_res < 1 || host->h_addrtype != af)
     {
-      if (!parse_res && errno == ERANGE)
+      if (parse_res == -1)
 	{
 	  *h_errnop = NETDB_INTERNAL;
 	  return NSS_STATUS_TRYAGAIN;
@@ -377,10 +377,9 @@ _nss_nis_gethostbyaddr_r (char *addr, int addrlen, int type,
   free (result);
 
   parse_res = parse_line (p, host, data, buflen);
-
-  if (!parse_res)
+  if (parse_res < 1)
     {
-      if (errno == ERANGE)
+      if (parse_res == -1)
 	{
 	  *h_errnop = NETDB_INTERNAL;
 	  return NSS_STATUS_TRYAGAIN;
diff --git a/nis/nss_nis/nis-network.c b/nis/nss_nis/nis-network.c
index 284e479401..c17ba81a62 100644
--- a/nis/nss_nis/nis-network.c
+++ b/nis/nss_nis/nis-network.c
@@ -126,9 +126,9 @@ internal_nis_getnetent_r (struct netent *net, char *buffer, size_t buflen,
         ++p;
       free (result);
 
-      parse_res = _nss_files_parse_netent (p, net, data, buflen);
-      if (!parse_res && errno == ERANGE)
+      if ((parse_res = _nss_files_parse_netent (p, net, data, buflen)) == -1)
 	{
+	  free (outkey);
 	  *herrnop = NETDB_INTERNAL;
 	  return NSS_STATUS_TRYAGAIN;
 	}
@@ -206,10 +206,10 @@ _nss_nis_getnetbyname_r (const char *name, struct netent *net,
 
   parse_res = _nss_files_parse_netent (p, net, data, buflen);
 
-  if (!parse_res)
+  if (parse_res < 1)
     {
       *herrnop = NETDB_INTERNAL;
-      if (errno == ERANGE)
+      if (parse_res == -1)
 	return NSS_STATUS_TRYAGAIN;
       else
         return NSS_STATUS_NOTFOUND;
@@ -286,10 +286,10 @@ _nss_nis_getnetbyaddr_r (unsigned long addr, int type, struct netent *net,
 	parse_res = _nss_files_parse_netent (p, net, data, buflen);
 
 
-	if (!parse_res)
+	if (parse_res < 1)
 	  {
 	    *herrnop = NETDB_INTERNAL;
-	    if (errno == ERANGE)
+	    if (parse_res == -1)
 	      return NSS_STATUS_TRYAGAIN;
 	    else
 	      return NSS_STATUS_NOTFOUND;
diff --git a/nis/nss_nis/nis-proto.c b/nis/nss_nis/nis-proto.c
index ceed40e036..eb09bb4ec7 100644
--- a/nis/nss_nis/nis-proto.c
+++ b/nis/nss_nis/nis-proto.c
@@ -152,17 +152,17 @@ internal_nis_getprotoent_r (struct protoent *proto,
       if (next == NULL)
         return NSS_STATUS_NOTFOUND;
       p = strcpy (buffer, next->val);
-      next = next->next;
 
       while (isspace (*p))
         ++p;
 
-      parse_res = _nss_files_parse_protoent (p, proto, data, buflen);
-      if (!parse_res && errno == ERANGE)
+      if ((parse_res = _nss_files_parse_protoent (p, proto, data, 
+						  buflen)) == -1)
         return NSS_STATUS_TRYAGAIN;
+      next = next->next;
     }
   while (!parse_res);
-
+  
   return NSS_STATUS_SUCCESS;
 }
 
@@ -221,17 +221,13 @@ _nss_nis_getprotobyname_r (const char *name, struct protoent *proto,
     ++p;
   free (result);
 
-  parse_res = _nss_files_parse_protoent (p, proto, data, buflen);
+  if ((parse_res = _nss_files_parse_protoent (p, proto, data, buflen)) == -1)
+    return NSS_STATUS_TRYAGAIN;
 
-  if (!parse_res)
-    {
-      if (errno == ERANGE)
-        return NSS_STATUS_TRYAGAIN;
-      else
-        return NSS_STATUS_NOTFOUND;
-    }
-  else
+  if (parse_res)
     return NSS_STATUS_SUCCESS;
+  else
+    return NSS_STATUS_NOTFOUND;
 }
 
 enum nss_status
@@ -272,15 +268,11 @@ _nss_nis_getprotobynumber_r (int number, struct protoent *proto,
     ++p;
   free (result);
 
-  parse_res = _nss_files_parse_protoent (p, proto, data, buflen);
+  if ((parse_res = _nss_files_parse_protoent (p, proto, data, buflen)) == -1)
+    return NSS_STATUS_TRYAGAIN;
 
-  if (!parse_res)
-    {
-      if (errno == ERANGE)
-        return NSS_STATUS_TRYAGAIN;
-      else
-        return NSS_STATUS_NOTFOUND;
-    }
-  else
+  if (parse_res)
     return NSS_STATUS_SUCCESS;
+  else
+    return NSS_STATUS_NOTFOUND;
 }
diff --git a/nis/nss_nis/nis-pwd.c b/nis/nss_nis/nis-pwd.c
index 39c2948b65..f693db17ea 100644
--- a/nis/nss_nis/nis-pwd.c
+++ b/nis/nss_nis/nis-pwd.c
@@ -121,16 +121,18 @@ internal_nis_getpwent_r (struct passwd *pwd, char *buffer, size_t buflen)
         ++p;
       free (result);
 
-      parse_res = _nss_files_parse_pwent (p, pwd, data, buflen);
-      if (!parse_res && errno == ERANGE)
-        return NSS_STATUS_TRYAGAIN;
+      if ((parse_res = _nss_files_parse_pwent (p, pwd, data, buflen)) == -1)
+	{
+	  free (outkey);
+	  return NSS_STATUS_TRYAGAIN;
+	}
 
       free (oldkey);
       oldkey = outkey;
       oldkeylen = keylen;
       new_start = 0;
     }
-  while (!parse_res);
+  while (parse_res < 1);
 
   return NSS_STATUS_SUCCESS;
 }
@@ -192,9 +194,9 @@ _nss_nis_getpwnam_r (const char *name, struct passwd *pwd,
 
   parse_res = _nss_files_parse_pwent (p, pwd, data, buflen);
 
-  if (!parse_res)
+  if (parse_res < 1)
     {
-      if (errno == ERANGE)
+      if (parse_res == -1)
         return NSS_STATUS_TRYAGAIN;
       else
         return NSS_STATUS_NOTFOUND;
@@ -243,9 +245,9 @@ _nss_nis_getpwuid_r (uid_t uid, struct passwd *pwd,
 
   parse_res = _nss_files_parse_pwent (p, pwd, data, buflen);
 
-  if (!parse_res)
+  if (parse_res < 1)
     {
-      if (errno == ERANGE)
+      if (parse_res == -1)
         return NSS_STATUS_TRYAGAIN;
       else
         return NSS_STATUS_NOTFOUND;
diff --git a/nis/nss_nis/nis-rpc.c b/nis/nss_nis/nis-rpc.c
index 073284865e..cd1f0db9b5 100644
--- a/nis/nss_nis/nis-rpc.c
+++ b/nis/nss_nis/nis-rpc.c
@@ -169,13 +169,12 @@ internal_nis_getrpcent_r (struct rpcent *rpc, char *buffer, size_t buflen,
       if (data->next == NULL)
         return NSS_STATUS_NOTFOUND;
       p = strcpy (buffer, data->next->val);
-      data->next = data->next->next;
       while (isspace (*p))
         ++p;
 
-      parse_res = _nss_files_parse_rpcent (p, rpc, pdata, buflen);
-      if (!parse_res && errno == ERANGE)
+      if ((parse_res = _nss_files_parse_rpcent (p, rpc, pdata, buflen)) == -1)
 	return NSS_STATUS_TRYAGAIN;
+      data->next = data->next->next;
     }
   while (!parse_res);
 
@@ -286,9 +285,9 @@ _nss_nis_getrpcbynumber_r (int number, struct rpcent *rpc,
 
   parse_res = _nss_files_parse_rpcent (p, rpc, data, buflen);
 
-  if (!parse_res)
+  if (parse_res < 1)
     {
-      if (errno == ERANGE)
+      if (parse_res == -1)
 	return NSS_STATUS_TRYAGAIN;
       else
 	return NSS_STATUS_NOTFOUND;
diff --git a/nis/nss_nis/nis-service.c b/nis/nss_nis/nis-service.c
index 054bc33169..5ec89c8677 100644
--- a/nis/nss_nis/nis-service.c
+++ b/nis/nss_nis/nis-service.c
@@ -169,13 +169,13 @@ internal_nis_getservent_r (struct servent *serv, char *buffer,
       if (data->next == NULL)
 	return NSS_STATUS_NOTFOUND;
       p = strcpy (buffer, data->next->val);
-      data->next = data->next->next;
-      while (isspace (*p))
+           while (isspace (*p))
         ++p;
 
-      parse_res = _nss_files_parse_servent (p, serv, buffer, buflen);
-      if (!parse_res && errno == ERANGE)
+      if ((parse_res = _nss_files_parse_servent (p, serv, buffer, 
+						 buflen)) == -1)
         return NSS_STATUS_TRYAGAIN;
+      data->next = data->next->next;
     }
   while (!parse_res);
 
diff --git a/nis/nss_nis/nis-spwd.c b/nis/nss_nis/nis-spwd.c
index 21221fd7e5..0263f4e313 100644
--- a/nis/nss_nis/nis-spwd.c
+++ b/nis/nss_nis/nis-spwd.c
@@ -121,10 +121,12 @@ internal_nis_getspent_r (struct spwd *sp, char *buffer, size_t buflen)
         ++p;
       free (result);
 
-      parse_res = _nss_files_parse_spent (p, sp, data, buflen);
-      if (!parse_res && errno == ERANGE)
-        return NSS_STATUS_TRYAGAIN;
-
+      if ((parse_res = _nss_files_parse_spent (p, sp, data, buflen)) == -1)
+	{
+	  free (outkey);
+	  return NSS_STATUS_TRYAGAIN;
+	}
+      
       free (oldkey);
       oldkey = outkey;
       oldkeylen = keylen;
@@ -190,15 +192,11 @@ _nss_nis_getspnam_r (const char *name, struct spwd *sp,
     ++p;
   free (result);
 
-  parse_res = _nss_files_parse_spent (p, sp, data, buflen);
+  if ((parse_res = _nss_files_parse_spent (p, sp, data, buflen)) == -1)
+    return NSS_STATUS_TRYAGAIN;
 
-  if (!parse_res)
-    {
-      if (errno == ERANGE)
-        return NSS_STATUS_TRYAGAIN;
-      else
-        return NSS_STATUS_NOTFOUND;
-    }
-  else
+  if (parse_res)
     return NSS_STATUS_SUCCESS;
+  else
+    return NSS_STATUS_NOTFOUND;
 }
diff --git a/nis/nss_nisplus/nisplus-alias.c b/nis/nss_nisplus/nisplus-alias.c
index 660ba3c34a..0a16b3890f 100644
--- a/nis/nss_nisplus/nisplus-alias.c
+++ b/nis/nss_nisplus/nisplus-alias.c
@@ -87,7 +87,7 @@ _nss_nisplus_parse_aliasent (nis_result *result, unsigned long entry,
 	  /* The line is too long for our buffer.  */
 	no_more_room:
 	  __set_errno (ERANGE);
-	  return 0;
+	  return -1;
 	}
       else
 	{
@@ -214,8 +214,10 @@ internal_nisplus_getaliasent_r (struct aliasent *alias,
       if (next_entry >= result->objects.objects_len)
 	return NSS_STATUS_NOTFOUND;
 
-      parse_res = _nss_nisplus_parse_aliasent (result, next_entry, alias,
-					       buffer, buflen);
+      if ((parse_res = _nss_nisplus_parse_aliasent (result, next_entry, alias,
+						    buffer, buflen)) == -1)
+	return NSS_STATUS_TRYAGAIN;
+
       ++next_entry;
     } while (!parse_res);
 
@@ -247,9 +249,7 @@ _nss_nisplus_getaliasbyname_r (const char *name, struct aliasent *alias,
     if (_nss_create_tablename() != NSS_STATUS_SUCCESS)
       return NSS_STATUS_UNAVAIL;
 
-  if (name == NULL || strlen(name) > 8)
-    return NSS_STATUS_NOTFOUND;
-  else
+  if (name != NULL || strlen(name) <= 8)
     {
       nis_result *result;
       char buf[strlen (name) + 30 + tablename_len];
@@ -261,15 +261,12 @@ _nss_nisplus_getaliasbyname_r (const char *name, struct aliasent *alias,
       if (niserr2nss (result->status) != NSS_STATUS_SUCCESS)
 	return niserr2nss (result->status);
 
-      parse_res = _nss_nisplus_parse_aliasent (result, 0, alias,
-					       buffer, buflen);
+      if ((parse_res = _nss_nisplus_parse_aliasent (result, 0, alias,
+						    buffer, buflen)) == -1)
+	return NSS_STATUS_TRYAGAIN;
 
       if (parse_res)
 	return NSS_STATUS_SUCCESS;
-
-      if (!parse_res && errno == ERANGE)
-	return NSS_STATUS_TRYAGAIN;
-      else
-	return NSS_STATUS_NOTFOUND;
     }
+  return NSS_STATUS_NOTFOUND;
 }
diff --git a/nis/nss_nisplus/nisplus-ethers.c b/nis/nss_nisplus/nisplus-ethers.c
index 7c07833ef4..d7c3720932 100644
--- a/nis/nss_nisplus/nisplus-ethers.c
+++ b/nis/nss_nisplus/nisplus-ethers.c
@@ -74,7 +74,7 @@ _nss_nisplus_parse_etherent (nis_result *result, struct etherent *ether,
   if (NISENTRYLEN (0, 0, result) +1 > room_left)
     {
       __set_errno (ERANGE);
-      return 0;
+      return -1;
     }
   strncpy (p, NISENTRYVAL (0, 0, result), NISENTRYLEN (0, 0, result));
   room_left -= (NISENTRYLEN (0, 0, result) +1);
@@ -152,8 +152,11 @@ internal_nisplus_getetherent_r (struct etherent *ether, char *buffer,
   /* Get the next entry until we found a correct one. */
   do
     {
+      nis_result *saved_result;
+      
       if (result == NULL)
 	{
+	  saved_result = NULL;
 	  result = nis_first_entry(tablename_val);
 	  if (niserr2nss (result->status) != NSS_STATUS_SUCCESS)
 	    return niserr2nss (result->status);
@@ -163,13 +166,28 @@ internal_nisplus_getetherent_r (struct etherent *ether, char *buffer,
 	  nis_result *res2;
 
 	  res2 = nis_next_entry(tablename_val, &result->cookie);
-	  nis_freeresult (result);
+	  saved_result = result;
 	  result = res2;
 	  if (niserr2nss (result->status) != NSS_STATUS_SUCCESS)
-	    return niserr2nss (result->status);
+	    {
+	      nis_freeresult (saved_result);
+	      return niserr2nss (result->status);
+	    }
 	}
 
-      parse_res = _nss_nisplus_parse_etherent (result, ether, buffer, buflen);
+      if ((parse_res = _nss_nisplus_parse_etherent (result, ether, buffer, 
+						    buflen)) == -1)
+	{
+	  nis_freeresult (result);
+	  result = saved_result;
+	  return NSS_STATUS_TRYAGAIN;
+	}
+      else
+	{
+	  if (saved_result != NULL)
+	    nis_freeresult (saved_result);
+	}
+      
     } while (!parse_res);
 
   return NSS_STATUS_SUCCESS;
@@ -200,9 +218,7 @@ _nss_nisplus_gethostton_r (const char *name, struct etherent *eth,
     if (_nss_create_tablename () != NSS_STATUS_SUCCESS)
       return NSS_STATUS_UNAVAIL;
 
-  if (name == NULL)
-    return NSS_STATUS_NOTFOUND;
-  else
+  if (name != NULL)
     {
       nis_result *result;
       char buf[strlen (name) + 40 + tablename_len];
@@ -212,18 +228,23 @@ _nss_nisplus_gethostton_r (const char *name, struct etherent *eth,
       result = nis_list(buf, FOLLOW_PATH | FOLLOW_LINKS, NULL, NULL);
 
       if (niserr2nss (result->status) != NSS_STATUS_SUCCESS)
-        return niserr2nss (result->status);
-
-      parse_res = _nss_nisplus_parse_etherent (result, eth, buffer, buflen);
-
+	{
+	  enum nss_status status = niserr2nss (result->status);
+	  nis_freeresult (result);
+	  return status;
+	}
+      
+      if ((parse_res = _nss_nisplus_parse_etherent (result, eth, buffer,
+						    buflen)) == -1)
+	{
+	  nis_freeresult (result);
+	  return NSS_STATUS_TRYAGAIN;
+	}
+	  
       if (parse_res)
         return NSS_STATUS_SUCCESS;
-
-      if (!parse_res && errno == ERANGE)
-        return NSS_STATUS_TRYAGAIN;
-      else
-        return NSS_STATUS_NOTFOUND;
     }
+  return NSS_STATUS_NOTFOUND;
 }
 
 enum nss_status
@@ -255,16 +276,22 @@ _nss_nisplus_getntohost_r (const struct ether_addr *addr,
       result = nis_list(buf, FOLLOW_PATH | FOLLOW_LINKS, NULL, NULL);
 
       if (niserr2nss (result->status) != NSS_STATUS_SUCCESS)
-	return niserr2nss (result->status);
-
-      parse_res = _nss_nisplus_parse_etherent (result, eth, buffer, buflen);
+	{
+	  enum nss_status status = niserr2nss (result->status);
+	  nis_freeresult (result);
+	  return status;
+	}
 
+      if ((parse_res = _nss_nisplus_parse_etherent (result, eth, buffer, 
+						    buflen)) == -1)
+	{
+	  nis_freeresult (result);
+	  return NSS_STATUS_TRYAGAIN;
+	}
+      
       if (parse_res)
 	return NSS_STATUS_SUCCESS;
-
-      if (!parse_res && errno == ERANGE)
-	return NSS_STATUS_TRYAGAIN;
-      else
-	return NSS_STATUS_NOTFOUND;
     }
+  return NSS_STATUS_NOTFOUND;
 }
+
diff --git a/nis/nss_nisplus/nisplus-grp.c b/nis/nss_nisplus/nisplus-grp.c
index f759f61ca0..08e9e040fe 100644
--- a/nis/nss_nisplus/nisplus-grp.c
+++ b/nis/nss_nisplus/nisplus-grp.c
@@ -117,8 +117,10 @@ internal_nisplus_getgrent_r (struct group *gr, char *buffer, size_t buflen)
       if (next_entry >= result->objects.objects_len)
 	return NSS_STATUS_NOTFOUND;
 
-      parse_res = _nss_nisplus_parse_grent (result, next_entry, gr,
-					    buffer, buflen);
+      if ((parse_res = _nss_nisplus_parse_grent (result, next_entry, gr,
+						 buffer, buflen)) == -1)
+	return NSS_STATUS_TRYAGAIN;
+
       ++next_entry;
     }
   while (!parse_res);
@@ -170,16 +172,14 @@ _nss_nisplus_getgrnam_r (const char *name, struct group *gr,
 	}
 
       parse_res = _nss_nisplus_parse_grent (result, 0, gr, buffer, buflen);
-
       nis_freeresult (result);
 
+      if (parse_res == -1)
+	return NSS_STATUS_TRYAGAIN;
       if (parse_res)
 	return NSS_STATUS_SUCCESS;
 
-      if (!parse_res && errno == ERANGE)
-	return NSS_STATUS_TRYAGAIN;
-      else
-	return NSS_STATUS_NOTFOUND;
+      return NSS_STATUS_NOTFOUND;
     }
 }
 
@@ -212,12 +212,12 @@ _nss_nisplus_getgrgid_r (const gid_t gid, struct group *gr,
 
     nis_freeresult (result);
 
+    if (parse_res == -1)
+      return NSS_STATUS_TRYAGAIN;
+
     if (parse_res)
       return NSS_STATUS_SUCCESS;
 
-    if (!parse_res && errno == ERANGE)
-      return NSS_STATUS_TRYAGAIN;
-    else
-      return NSS_STATUS_NOTFOUND;
+    return NSS_STATUS_NOTFOUND;
   }
 }
diff --git a/nis/nss_nisplus/nisplus-hosts.c b/nis/nss_nisplus/nisplus-hosts.c
index d4dda5964e..10f939e341 100644
--- a/nis/nss_nisplus/nisplus-hosts.c
+++ b/nis/nss_nisplus/nisplus-hosts.c
@@ -66,8 +66,9 @@ _nss_nisplus_parse_hostent (nis_result *result, int af, struct hostent *host,
 
   if (room_left < NISENTRYLEN (0, 2, result) + 1)
     {
+    no_more_room:
       __set_errno (ERANGE);
-      return 0;
+      return -1;
     }
 
   data = first_unused;
@@ -96,10 +97,8 @@ _nss_nisplus_parse_hostent (nis_result *result, int af, struct hostent *host,
   room_left-=host->h_length;
 
   if (NISENTRYLEN (0, 0, result) + 1 > room_left)
-    {
-      __set_errno (ERANGE);
-      return 0;
-    }
+    goto no_more_room;
+  
   p = stpncpy (first_unused, NISENTRYVAL (0, 0, result),
 	       NISENTRYLEN (0, 0, result));
   *p = '\0';
@@ -114,10 +113,8 @@ _nss_nisplus_parse_hostent (nis_result *result, int af, struct hostent *host,
       if (strcmp (NISENTRYVAL (i, 1, result), host->h_name) != 0)
 	{
 	  if (NISENTRYLEN (i, 1, result) + 2 > room_left)
-	    {
-	      __set_errno (ERANGE);
-	      return 0;
-	    }
+	    goto no_more_room;
+	  
 	  *p++ = ' ';
 	  p = stpncpy (p, NISENTRYVAL (i, 1, result),
 		       NISENTRYLEN (i, 1, result));
@@ -133,10 +130,8 @@ _nss_nisplus_parse_hostent (nis_result *result, int af, struct hostent *host,
   first_unused -= ((first_unused - (char *) 0) % __alignof__ (char *));
   host->h_addr_list = (char **) first_unused;
   if (room_left < 2 * sizeof (char *))
-    {
-      __set_errno (ERANGE);
-      return 0;
-    }
+    goto no_more_room;
+  
   room_left -= (2 * sizeof (char *));
   host->h_addr_list[0] = data;
   host->h_addr_list[1] = NULL;
@@ -154,10 +149,7 @@ _nss_nisplus_parse_hostent (nis_result *result, int af, struct hostent *host,
 	break;
 
       if (room_left < sizeof (char *))
-	{
-	  __set_errno (ERANGE);
-	  return 0;
-	}
+	goto no_more_room;
 
       room_left -= sizeof (char *);
       host->h_aliases[i] = line;
@@ -174,9 +166,7 @@ _nss_nisplus_parse_hostent (nis_result *result, int af, struct hostent *host,
       else
 	host->h_aliases[i+1] = NULL;
     }
-
   return 1;
-
 }
 
 static enum nss_status
@@ -240,8 +230,11 @@ internal_nisplus_gethostent_r (struct hostent *host, char *buffer,
   /* Get the next entry until we found a correct one. */
   do
     {
+      nis_result *saved_res;
+
       if (result == NULL)
 	{
+	  saved_res = NULL;
 	  if (tablename_val == NULL)
 	    if (_nss_create_tablename() != NSS_STATUS_SUCCESS)
 	      return NSS_STATUS_UNAVAIL;
@@ -249,9 +242,7 @@ internal_nisplus_gethostent_r (struct hostent *host, char *buffer,
 	  result = nis_first_entry(tablename_val);
 	  if (niserr2nss (result->status) != NSS_STATUS_SUCCESS)
             {
-              int retval;
-
-              retval = niserr2nss (result->status);
+              enum nss_status retval = niserr2nss (result->status);	      
               if (retval == NSS_STATUS_TRYAGAIN)
                 {
                   *herrnop = NETDB_INTERNAL;
@@ -259,20 +250,21 @@ internal_nisplus_gethostent_r (struct hostent *host, char *buffer,
                 }
               return retval;
             }
-
+	  
 	}
       else
 	{
 	  nis_result *res2;
-
+	  
+	  saved_res = result;
 	  res2 = nis_next_entry(tablename_val, &result->cookie);
-	  nis_freeresult (result);
 	  result = res2;
 	  if (niserr2nss (result->status) != NSS_STATUS_SUCCESS)
             {
-              int retval;
+              enum nss_status retval= niserr2nss (result->status);
 
-              retval = niserr2nss (result->status);
+	      nis_freeresult (result);
+	      result = saved_res;
               if (retval == NSS_STATUS_TRYAGAIN)
                 {
                   *herrnop = NETDB_INTERNAL;
@@ -281,20 +273,24 @@ internal_nisplus_gethostent_r (struct hostent *host, char *buffer,
               return retval;
             }
 	}
-
+      
       parse_res = _nss_nisplus_parse_hostent (result, AF_INET6,
 					      host, buffer, buflen);
-      if (!parse_res && errno != ERANGE)
+      if (parse_res < 1 && errno != ERANGE)
 	parse_res = _nss_nisplus_parse_hostent (result, AF_INET, host,
 						buffer, buflen);
-      if (!parse_res && errno == ERANGE)
+      if (parse_res < 1 && errno == ERANGE)
         {
+	  nis_freeresult (result);
+	  result = saved_res;
           *herrnop = NETDB_INTERNAL;
           return NSS_STATUS_TRYAGAIN;
         }
-
+      if (saved_res != NULL)
+	nis_freeresult (saved_res);
+      
     } while (!parse_res);
-
+  
   return NSS_STATUS_SUCCESS;
 }
 
@@ -353,10 +349,10 @@ _nss_nisplus_gethostbyname2_r (const char *name, int af, struct hostent *host,
       else
 	sprintf(buf, "[cname=%s],%s", NISENTRYVAL(0, 0, result),
 		tablename_val);
-
+      
       nis_freeresult (result);
       result = nis_list(buf, FOLLOW_PATH | FOLLOW_LINKS, NULL, NULL);
-
+      
       retval = niserr2nss (result->status);
       if (retval != NSS_STATUS_SUCCESS)
         {
@@ -373,12 +369,12 @@ _nss_nisplus_gethostbyname2_r (const char *name, int af, struct hostent *host,
 	_nss_nisplus_parse_hostent (result, af, host, buffer, buflen);
 
       nis_freeresult (result);
-
-      if (parse_res)
+      
+      if (parse_res > 0)
 	return NSS_STATUS_SUCCESS;
 
       *herrnop = NETDB_INTERNAL;
-      if (!parse_res && errno == ERANGE)
+      if (parse_res == -1)
 	return NSS_STATUS_TRYAGAIN;
       else
 	return NSS_STATUS_NOTFOUND;
@@ -438,14 +434,13 @@ _nss_nisplus_gethostbyaddr_r (const char *addr, int addrlen, int type,
 
       parse_res = _nss_nisplus_parse_hostent (result, type, host,
 					      buffer, buflen);
-
       nis_freeresult (result);
-
-      if (parse_res)
+      
+      if (parse_res > 0)
 	return NSS_STATUS_SUCCESS;
-
+      
       *herrnop = NETDB_INTERNAL;
-      if (!parse_res && errno == ERANGE)
+      if (parse_res == -1)
 	return NSS_STATUS_TRYAGAIN;
       else
 	return NSS_STATUS_NOTFOUND;
diff --git a/nis/nss_nisplus/nisplus-netgrp.c b/nis/nss_nisplus/nisplus-netgrp.c
index 670d0bb4ed..9c38539de8 100644
--- a/nis/nss_nisplus/nisplus-netgrp.c
+++ b/nis/nss_nisplus/nisplus-netgrp.c
@@ -80,7 +80,7 @@ _nss_nisplus_parse_netgroup (struct __netgrent *result, char *buffer,
       NISENTRYLEN (position, 4, data) + 6 > buflen)
     {
       __set_errno (ERANGE);
-      status = NSS_STATUS_UNAVAIL;
+      status = NSS_STATUS_TRYAGAIN;
     }
   else
     {
diff --git a/nis/nss_nisplus/nisplus-network.c b/nis/nss_nisplus/nisplus-network.c
index 183722633f..57362dba78 100644
--- a/nis/nss_nisplus/nisplus-network.c
+++ b/nis/nss_nisplus/nisplus-network.c
@@ -66,7 +66,7 @@ _nss_nisplus_parse_netent (nis_result *result, struct netent *network,
       /* The line is too long for our buffer.  */
     no_more_room:
       __set_errno (ERANGE);
-      return 0;
+      return -1;
     }
 
   strncpy (first_unused, NISENTRYVAL(0, 0, result),
@@ -85,10 +85,8 @@ _nss_nisplus_parse_netent (nis_result *result, struct netent *network,
       if (strcmp (NISENTRYVAL (i, 1, result), network->n_name) != 0)
         {
           if (NISENTRYLEN (i, 1, result) + 2 > room_left)
-            {
-              __set_errno (ERANGE);
-              return 0;
-            }
+	    goto no_more_room;
+	  
 	  *p++ = ' ';
           p = stpncpy (p, NISENTRYVAL (i, 1, result),
                        NISENTRYLEN (i, 1, result));
@@ -120,10 +118,7 @@ _nss_nisplus_parse_netent (nis_result *result, struct netent *network,
         break;
 
       if (room_left < sizeof (char *))
-        {
-          __set_errno (ERANGE);
-          return 0;
-        }
+	goto no_more_room;
 
       room_left -= sizeof (char *);
       network->n_aliases[i] = line;
@@ -208,8 +203,12 @@ internal_nisplus_getnetent_r (struct netent *network, char *buffer,
   /* Get the next entry until we found a correct one. */
   do
     {
+      nis_result *saved_res;
+
       if (result == NULL)
 	{
+	  saved_res = NULL;
+
 	  if (tablename_val == NULL)
 	    if (_nss_create_tablename() != NSS_STATUS_SUCCESS)
 	      return NSS_STATUS_UNAVAIL;
@@ -218,8 +217,10 @@ internal_nisplus_getnetent_r (struct netent *network, char *buffer,
 	  if (niserr2nss (result->status) != NSS_STATUS_SUCCESS)
 	    {
 	      int retval;
-
+	      
 	      retval = niserr2nss (result->status);
+	      nis_freeresult (result);
+	      result = NULL;
 	      if (retval == NSS_STATUS_TRYAGAIN)
 		{
 		  *herrnop = NETDB_INTERNAL;
@@ -235,13 +236,15 @@ internal_nisplus_getnetent_r (struct netent *network, char *buffer,
 	  nis_result *res;
 
 	  res = nis_next_entry(tablename_val, &result->cookie);
-	  nis_freeresult (result);
+	  saved_res = result;
 	  result = res;
 	  if (niserr2nss (result->status) != NSS_STATUS_SUCCESS)
 	    {
 	      int retval;
 
 	      retval = niserr2nss (result->status);
+	      nis_freeresult (result);
+	      result = saved_res;
 	      if (retval == NSS_STATUS_TRYAGAIN)
 		{
 		  *herrnop = NETDB_INTERNAL;
@@ -251,15 +254,15 @@ internal_nisplus_getnetent_r (struct netent *network, char *buffer,
 	    }
 	}
 
-      parse_res = _nss_nisplus_parse_netent (result, network, buffer, buflen);
-      if (!parse_res && errno == ERANGE)
+      if ((parse_res = _nss_nisplus_parse_netent (result, network, buffer, 
+						  buflen)) == -1)
         {
           *herrnop = NETDB_INTERNAL;
           return NSS_STATUS_TRYAGAIN;
         }
-
+      
     } while (!parse_res);
-
+  
   return NSS_STATUS_SUCCESS;
 }
 
@@ -298,7 +301,7 @@ _nss_nisplus_getnetbyname_r (const char *name, struct netent *network,
     {
       nis_result *result;
       char buf[strlen (name) + 255 + tablename_len];
-
+      
       /* Search at first in the alias list, and use the correct name
 	 for the next search */
       sprintf(buf, "[name=%s],%s", name, tablename_val);
@@ -336,11 +339,11 @@ _nss_nisplus_getnetbyname_r (const char *name, struct netent *network,
 
       nis_freeresult (result);
 
-      if (parse_res)
+      if (parse_res > 0)
 	return NSS_STATUS_SUCCESS;
 
       *herrnop = NETDB_INTERNAL;
-      if (!parse_res && errno == ERANGE)
+      if (parse_res == -1)
 	return NSS_STATUS_TRYAGAIN;
       else
 	return NSS_STATUS_NOTFOUND;
@@ -385,11 +388,11 @@ _nss_nisplus_getnetbyaddr_r (const unsigned long addr, const int type,
 
     nis_freeresult (result);
 
-    if (parse_res)
+    if (parse_res > 0)
       return NSS_STATUS_SUCCESS;
-
+    
     *herrnop = NETDB_INTERNAL;
-    if (!parse_res && errno == ERANGE)
+    if (parse_res == -1)
       return NSS_STATUS_TRYAGAIN;
     else
       return NSS_STATUS_NOTFOUND;
diff --git a/nis/nss_nisplus/nisplus-parser.c b/nis/nss_nisplus/nisplus-parser.c
index bb6bba1e3e..3d0ff32e57 100644
--- a/nis/nss_nisplus/nisplus-parser.c
+++ b/nis/nss_nisplus/nisplus-parser.c
@@ -55,7 +55,7 @@ _nss_nisplus_parse_pwent (nis_result *result, struct passwd *pw,
       /* The line is too long for our buffer.  */
     no_more_room:
       __set_errno (ERANGE);
-      return 0;
+      return -1;
     }
 
   strncpy (first_unused, NISENTRYVAL(0, 0, result),
@@ -152,7 +152,7 @@ _nss_nisplus_parse_grent (nis_result *result, u_long entry,
       /* The line is too long for our buffer.  */
     no_more_room:
       __set_errno (ERANGE);
-      return 0;
+      return -1;
     }
 
   strncpy (first_unused, NISENTRYVAL (entry, 0, result),
@@ -258,7 +258,7 @@ _nss_nisplus_parse_spent (nis_result *result, struct spwd *sp,
       /* The line is too long for our buffer.  */
     no_more_room:
       __set_errno (ERANGE);
-      return 0;
+      return -1;
     }
 
   strncpy (first_unused, NISENTRYVAL (0, 0, result),
diff --git a/nis/nss_nisplus/nisplus-proto.c b/nis/nss_nisplus/nisplus-proto.c
index d98317a8a1..707a0e5296 100644
--- a/nis/nss_nisplus/nisplus-proto.c
+++ b/nis/nss_nisplus/nisplus-proto.c
@@ -63,7 +63,7 @@ _nss_nisplus_parse_protoent (nis_result * result, struct protoent *proto,
     {
     no_more_room:
       __set_errno (ERANGE);
-      return 0;
+      return -1;
     }
   strncpy (first_unused, NISENTRYVAL (0, 0, result),
            NISENTRYLEN (0, 0, result));
@@ -196,8 +196,11 @@ internal_nisplus_getprotoent_r (struct protoent *proto, char *buffer,
   /* Get the next entry until we found a correct one. */
   do
     {
+      nis_result *saved_res;
+
       if (result == NULL)
 	{
+	  saved_res = NULL;
 	  if (tablename_val == NULL)
 	    if (_nss_create_tablename () != NSS_STATUS_SUCCESS)
 	      return NSS_STATUS_UNAVAIL;
@@ -209,16 +212,30 @@ internal_nisplus_getprotoent_r (struct protoent *proto, char *buffer,
       else
 	{
 	  nis_result *res;
-
+	  
+	  saved_res = result;
 	  res = nis_next_entry (tablename_val, &result->cookie);
-	  nis_freeresult (result);
 	  result = res;
 
 	  if (niserr2nss (result->status) != NSS_STATUS_SUCCESS)
-	    return niserr2nss (result->status);
+	    {
+	      nis_freeresult (saved_res);
+	      return niserr2nss (result->status);
+	    }
 	}
 
-      parse_res = _nss_nisplus_parse_protoent (result, proto, buffer, buflen);
+      if ((parse_res = _nss_nisplus_parse_protoent (result, proto, buffer, 
+						    buflen)) == -1)
+	{
+	  nis_freeresult (result);
+	  result = saved_res;
+	  return NSS_STATUS_TRYAGAIN;
+	}
+      else
+	{
+	  if (saved_res)
+	    nis_freeresult (saved_res);
+	}
     }
   while (!parse_res);
 
@@ -290,13 +307,12 @@ _nss_nisplus_getprotobyname_r (const char *name, struct protoent *proto,
 
       nis_freeresult (result);
 
+      if (parse_res == -1)
+	return NSS_STATUS_TRYAGAIN;
       if (parse_res)
 	return NSS_STATUS_SUCCESS;
 
-      if (!parse_res && errno == ERANGE)
-	return NSS_STATUS_TRYAGAIN;
-      else
-	return NSS_STATUS_NOTFOUND;
+      return NSS_STATUS_NOTFOUND;
     }
 }
 
@@ -327,12 +343,13 @@ _nss_nisplus_getprotobynumber_r (const int number, struct protoent *proto,
     parse_res = _nss_nisplus_parse_protoent (result, proto, buffer, buflen);
 
     nis_freeresult (result);
-    if (parse_res)
-      return NSS_STATUS_SUCCESS;
 
-    if (!parse_res && errno == ERANGE)
+    if (parse_res == -1)
       return NSS_STATUS_TRYAGAIN;
-    else
-      return NSS_STATUS_NOTFOUND;
+    
+    if (parse_res)
+      return NSS_STATUS_SUCCESS;
+    
+    return NSS_STATUS_NOTFOUND;
   }
 }
diff --git a/nis/nss_nisplus/nisplus-pwd.c b/nis/nss_nisplus/nisplus-pwd.c
index 459a1a4380..2c1fb19cab 100644
--- a/nis/nss_nisplus/nisplus-pwd.c
+++ b/nis/nss_nisplus/nisplus-pwd.c
@@ -96,8 +96,11 @@ internal_nisplus_getpwent_r (struct passwd *pw, char *buffer, size_t buflen)
   /* Get the next entry until we found a correct one. */
   do
     {
+      nis_result *saved_res;
+      
       if (result == NULL)
 	{
+	  saved_res = NULL;
           if (tablename_val == NULL)
             if (_nss_create_tablename () != NSS_STATUS_SUCCESS)
               return NSS_STATUS_UNAVAIL;
@@ -110,14 +113,28 @@ internal_nisplus_getpwent_r (struct passwd *pw, char *buffer, size_t buflen)
 	{
 	  nis_result *res;
 
+	  saved_res = result;
 	  res = nis_next_entry(tablename_val, &result->cookie);
-	  nis_freeresult (result);
 	  result = res;
 	  if (niserr2nss (result->status) != NSS_STATUS_SUCCESS)
-	    return niserr2nss (result->status);
+	    {
+	      nis_freeresult (saved_res);
+	      return niserr2nss (result->status);
+	    }
 	}
 
-      parse_res = _nss_nisplus_parse_pwent (result, pw, buffer, buflen);
+      if ((parse_res = _nss_nisplus_parse_pwent (result, pw, buffer, 
+						 buflen)) == -1)
+	{
+	  nis_freeresult (result);
+	  result = saved_res;
+	  return NSS_STATUS_TRYAGAIN;
+	}
+      else
+	{
+	  if (saved_res)
+	    nis_freeresult (saved_res);
+	}
     } while (!parse_res);
 
   return NSS_STATUS_SUCCESS;
@@ -170,13 +187,13 @@ _nss_nisplus_getpwnam_r (const char *name, struct passwd *pw,
 
       nis_freeresult (result);
 
+      if (parse_res == -1)
+	return NSS_STATUS_TRYAGAIN;
+
       if (parse_res)
 	return NSS_STATUS_SUCCESS;
-
-      if (!parse_res && errno == ERANGE)
-	return NSS_STATUS_TRYAGAIN;
-      else
-	return NSS_STATUS_NOTFOUND;
+      
+      return NSS_STATUS_NOTFOUND;
     }
 }
 
@@ -207,12 +224,13 @@ _nss_nisplus_getpwuid_r (const uid_t uid, struct passwd *pw,
     parse_res = _nss_nisplus_parse_pwent (result, pw, buffer, buflen);
 
     nis_freeresult (result);
+
+    if (parse_res == -1)
+      return NSS_STATUS_TRYAGAIN;
+    
     if (parse_res)
       return NSS_STATUS_SUCCESS;
 
-    if (!parse_res && errno == ERANGE)
-      return NSS_STATUS_TRYAGAIN;
-    else
-      return NSS_STATUS_NOTFOUND;
+    return NSS_STATUS_NOTFOUND;
   }
 }
diff --git a/nis/nss_nisplus/nisplus-rpc.c b/nis/nss_nisplus/nisplus-rpc.c
index 47610a4dca..b70c2ebbca 100644
--- a/nis/nss_nisplus/nisplus-rpc.c
+++ b/nis/nss_nisplus/nisplus-rpc.c
@@ -64,7 +64,7 @@ _nss_nisplus_parse_rpcent (nis_result *result, struct rpcent *rpc,
     {
     no_more_room:
       __set_errno (ERANGE);
-      return 0;
+      return -1;
     }
   strncpy (first_unused, NISENTRYVAL (0, 0, result),
            NISENTRYLEN (0, 0, result));
@@ -198,8 +198,11 @@ internal_nisplus_getrpcent_r (struct rpcent *rpc, char *buffer,
   /* Get the next entry until we found a correct one. */
   do
     {
+      nis_result *saved_res;
+
       if (result == NULL)
 	{
+	  saved_res = NULL;
           if (tablename_val == NULL)
             if (_nss_create_tablename () != NSS_STATUS_SUCCESS)
               return NSS_STATUS_UNAVAIL;
@@ -212,14 +215,28 @@ internal_nisplus_getrpcent_r (struct rpcent *rpc, char *buffer,
 	{
 	  nis_result *res;
 
+	  saved_res = result;
 	  res = nis_next_entry (tablename_val, &result->cookie);
-	  nis_freeresult (result);
 	  result = res;
 	  if (niserr2nss (result->status) != NSS_STATUS_SUCCESS)
-	    return niserr2nss (result->status);
+	    {
+	      nis_freeresult (saved_res);
+	      return niserr2nss (result->status);
+	    }
 	}
 
-      parse_res = _nss_nisplus_parse_rpcent (result, rpc, buffer, buflen);
+      if ((parse_res = _nss_nisplus_parse_rpcent (result, rpc, buffer, 
+						  buflen)) == -1)
+	{
+	  nis_freeresult (result);
+	  result = saved_res;
+	  return NSS_STATUS_TRYAGAIN;
+	}
+      else
+	{
+	  if (saved_res)
+	    nis_freeresult (saved_res);
+	}
     } while (!parse_res);
 
   return NSS_STATUS_SUCCESS;
@@ -290,13 +307,13 @@ _nss_nisplus_getrpcbyname_r (const char *name, struct rpcent *rpc,
 
       nis_freeresult (result);
 
+      if (parse_res == -1)
+	return NSS_STATUS_TRYAGAIN;
+
       if (parse_res)
 	return NSS_STATUS_SUCCESS;
 
-      if (!parse_res && errno == ERANGE)
-	return NSS_STATUS_TRYAGAIN;
-      else
-	return NSS_STATUS_NOTFOUND;
+      return NSS_STATUS_NOTFOUND;
     }
 }
 
@@ -329,12 +346,12 @@ _nss_nisplus_getrpcbynumber_r (const int number, struct rpcent *rpc,
 
     nis_freeresult (result);
 
+    if (parse_res == -1)
+      return NSS_STATUS_TRYAGAIN;
+
     if (parse_res)
       return NSS_STATUS_SUCCESS;
 
-    if (!parse_res && errno == ERANGE)
-      return NSS_STATUS_TRYAGAIN;
-    else
-      return NSS_STATUS_NOTFOUND;
+    return NSS_STATUS_NOTFOUND;
   }
 }
diff --git a/nis/nss_nisplus/nisplus-service.c b/nis/nss_nisplus/nisplus-service.c
index b97034e9b8..37042d9d13 100644
--- a/nis/nss_nisplus/nisplus-service.c
+++ b/nis/nss_nisplus/nisplus-service.c
@@ -63,7 +63,7 @@ _nss_nisplus_parse_servent (nis_result *result, struct servent *serv,
     {
     no_more_room:
       __set_errno (ERANGE);
-      return 0;
+      return -1;
     }
   strncpy (first_unused, NISENTRYVAL (0, 0, result),
            NISENTRYLEN (0, 0, result));
@@ -204,8 +204,11 @@ internal_nisplus_getservent_r (struct servent *serv, char *buffer,
   /* Get the next entry until we found a correct one. */
   do
     {
+      nis_result *saved_res;
+      
       if (result == NULL)
 	{
+	  saved_res = NULL;
           if (tablename_val == NULL)
             if (_nss_create_tablename () != NSS_STATUS_SUCCESS)
               return NSS_STATUS_UNAVAIL;
@@ -218,14 +221,28 @@ internal_nisplus_getservent_r (struct servent *serv, char *buffer,
 	{
 	  nis_result *res;
 
+	  saved_res = result;
 	  res = nis_next_entry (tablename_val, &result->cookie);
-	  nis_freeresult (result);
 	  result = res;
 	  if (niserr2nss (result->status) != NSS_STATUS_SUCCESS)
-	    return niserr2nss (result->status);
+	    {
+	      nis_freeresult (saved_res);
+	      return niserr2nss (result->status);
+	    }
 	}
 
-      parse_res = _nss_nisplus_parse_servent (result, serv, buffer, buflen);
+      if ((parse_res = _nss_nisplus_parse_servent (result, serv, buffer,
+						   buflen)) == -1)
+	{
+	  nis_freeresult (result);
+	  result = saved_res;
+	  return NSS_STATUS_TRYAGAIN;
+	}
+      else
+	{
+	  if (saved_res)
+	    nis_freeresult (saved_res);
+	}
     }
   while (!parse_res);
 
@@ -300,16 +317,15 @@ _nss_nisplus_getservbyname_r (const char *name, const char *protocol,
 	}
 
       parse_res = _nss_nisplus_parse_servent (result, serv, buffer, buflen);
-
       nis_freeresult (result);
 
+      if (parse_res == -1)
+	return NSS_STATUS_TRYAGAIN;
+
       if (parse_res)
 	return NSS_STATUS_SUCCESS;
 
-      if (!parse_res && errno == ERANGE)
-	return NSS_STATUS_TRYAGAIN;
-      else
-	return NSS_STATUS_NOTFOUND;
+      return NSS_STATUS_NOTFOUND;
     }
 }
 
@@ -347,15 +363,14 @@ _nss_nisplus_getservbynumber_r (const int number, const char *protocol,
 	}
 
       parse_res = _nss_nisplus_parse_servent (result, serv, buffer, buflen);
-
       nis_freeresult (result);
 
+      if (parse_res == -1)
+	return NSS_STATUS_TRYAGAIN;
+
       if (parse_res)
 	return NSS_STATUS_SUCCESS;
 
-      if (!parse_res && errno == ERANGE)
-	return NSS_STATUS_TRYAGAIN;
-      else
-	return NSS_STATUS_NOTFOUND;
+      return NSS_STATUS_NOTFOUND;
     }
 }
diff --git a/nis/nss_nisplus/nisplus-spwd.c b/nis/nss_nisplus/nisplus-spwd.c
index 81bde4e689..c7f1e2a567 100644
--- a/nis/nss_nisplus/nisplus-spwd.c
+++ b/nis/nss_nisplus/nisplus-spwd.c
@@ -93,8 +93,12 @@ internal_nisplus_getspent_r (struct spwd *sp, char *buffer, size_t buflen)
   /* Get the next entry until we found a correct one. */
   do
     {
+      nis_result *saved_res;
+
       if (result == NULL)
 	{
+	  saved_res = NULL;
+
           if (tablename_val == NULL)
             if (_nss_create_tablename () != NSS_STATUS_SUCCESS)
               return NSS_STATUS_UNAVAIL;
@@ -107,14 +111,28 @@ internal_nisplus_getspent_r (struct spwd *sp, char *buffer, size_t buflen)
 	{
 	  nis_result *res;
 
+	  saved_res = result;
 	  res = nis_next_entry (tablename_val, &result->cookie);
-	  nis_freeresult (result);
 	  result = res;
 	  if (niserr2nss (result->status) != NSS_STATUS_SUCCESS)
-	    return niserr2nss (result->status);
+	    {
+	      nis_freeresult (saved_res);
+	      return niserr2nss (result->status);
+	    }
 	}
 
-      parse_res = _nss_nisplus_parse_spent (result, sp, buffer, buflen);
+      if ((parse_res = _nss_nisplus_parse_spent (result, sp, buffer,
+						 buflen)) == -1)
+	{
+	  nis_freeresult (result);
+	  result = saved_res;
+	  return NSS_STATUS_TRYAGAIN;
+	}
+      else
+	{
+	  if (saved_res)
+	    nis_freeresult (saved_res);
+	}
     } while (!parse_res);
 
   return NSS_STATUS_SUCCESS;
@@ -164,15 +182,14 @@ _nss_nisplus_getspnam_r (const char *name, struct spwd *sp,
 	}
 
       parse_res = _nss_nisplus_parse_spent (result, sp, buffer, buflen);
-
       nis_freeresult (result);
 
+      if (parse_res == -1)
+	return NSS_STATUS_TRYAGAIN;
+
       if (parse_res)
 	return NSS_STATUS_SUCCESS;
 
-      if (!parse_res && errno == ERANGE)
-	return NSS_STATUS_TRYAGAIN;
-      else
-	return NSS_STATUS_NOTFOUND;
+      return NSS_STATUS_NOTFOUND;
     }
 }