Remove --enable-obsolete-nsl configure flag

this means that *always* libnsl is only built as shared library for
backward compatibility and the NSS modules libnss_nis and libnss_nisplus
are not built at all, libnsl's headers aren't installed.

This compatibility is kept only for architectures and ABIs that have
been added in or before version 2.28.

Replacement implementations based on TIRPC, which additionally support
IPv6, are available from <https://github.com/thkukuk/>.

This change does not affect libnss_compat which does not depended
on libnsl since 2.27 and thus can be used without NIS.

libnsl code depends on Sun RPC, e.g. on --enable-obsolete-rpc (installed
libnsl headers use installed Sun RPC headers), which will be removed in
the following commit.

1 files changed, 0 insertions, 356 deletions

diff --git a/nis/nss_nisplus/nisplus-ethers.c b/nis/nss_nisplus/nisplus-ethers.c
deleted file mode 100644
index 51aa6a6e83..0000000000
--- a/nis/nss_nisplus/nisplus-ethers.c
+++ /dev/null
@@ -1,356 +0,0 @@
-/* Copyright (C) 1997-2020 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-   Contributed by Thorsten Kukuk <kukuk@suse.de>, 1997.
-
-   The GNU C Library is free software; you can redistribute it and/or
-   modify it under the terms of the GNU Lesser General Public
-   License as published by the Free Software Foundation; either
-   version 2.1 of the License, or (at your option) any later version.
-
-   The GNU C Library is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   Lesser General Public License for more details.
-
-   You should have received a copy of the GNU Lesser General Public
-   License along with the GNU C Library; if not, see
-   <https://www.gnu.org/licenses/>.  */
-
-#include <atomic.h>
-#include <ctype.h>
-#include <errno.h>
-#include <inttypes.h>
-#include <netdb.h>
-#include <nss.h>
-#include <string.h>
-#include <netinet/ether.h>
-#include <netinet/if_ether.h>
-#include <rpcsvc/nis.h>
-#include <libc-lock.h>
-
-#include "nss-nisplus.h"
-
-__libc_lock_define_initialized (static, lock)
-
-static nis_result *result;
-static nis_name tablename_val;
-static u_long tablename_len;
-
-
-#define NISENTRYVAL(idx, col, res) \
-	(NIS_RES_OBJECT (res)[idx].zo_data.objdata_u.en_data.en_cols.en_cols_val[col].ec_value.ec_value_val)
-
-#define NISENTRYLEN(idx, col, res) \
-	(NIS_RES_OBJECT (res)[idx].zo_data.objdata_u.en_data.en_cols.en_cols_val[col].ec_value.ec_value_len)
-
-static int
-_nss_nisplus_parse_etherent (nis_result *result, struct etherent *ether,
-			     char *buffer, size_t buflen, int *errnop)
-{
-  char *p = buffer;
-  size_t room_left = buflen;
-
-  if (result == NULL)
-    return 0;
-
-  if ((result->status != NIS_SUCCESS && result->status != NIS_S_SUCCESS)
-      || NIS_RES_NUMOBJ (result) != 1
-      || __type_of (NIS_RES_OBJECT (result)) != NIS_ENTRY_OBJ
-      || strcmp (NIS_RES_OBJECT (result)->EN_data.en_type,
-		 "ethers_tbl") != 0
-      || NIS_RES_OBJECT (result)->EN_data.en_cols.en_cols_len < 2)
-    return 0;
-
-  /* Generate the ether entry format and use the normal parser */
-  if (NISENTRYLEN (0, 0, result) + 1 > room_left)
-    {
-      *errnop = ERANGE;
-      return -1;
-    }
-  char *cp = __stpncpy (p, NISENTRYVAL (0, 0, result),
-			NISENTRYLEN (0, 0, result));
-  *cp = '\0';
-  room_left -= NISENTRYLEN (0, 0, result) + 1;
-  ether->e_name = p;
-
-  struct ether_addr *ea = ether_aton (NISENTRYVAL (0, 1, result));
-  if (ea == NULL)
-    {
-      *errnop = EINVAL;
-      return -2;
-    }
-
-  ether->e_addr = *ea;
-
-  return 1;
-}
-
-static enum nss_status
-_nss_create_tablename (int *errnop)
-{
-  if (tablename_val == NULL)
-    {
-      const char *local_dir = nis_local_directory ();
-      size_t local_dir_len = strlen (local_dir);
-      static const char prefix[] = "ethers.org_dir.";
-
-      char *p = malloc (sizeof (prefix) + local_dir_len);
-      if (p == NULL)
-	{
-	  *errnop = errno;
-	  return NSS_STATUS_TRYAGAIN;
-	}
-
-      memcpy (__stpcpy (p, prefix), local_dir, local_dir_len + 1);
-
-      tablename_len = sizeof (prefix) - 1 + local_dir_len;
-
-      atomic_write_barrier ();
-
-      tablename_val = p;
-    }
-  return NSS_STATUS_SUCCESS;
-}
-
-
-enum nss_status
-_nss_nisplus_setetherent (int stayopen)
-{
-  enum nss_status status;
-  int err;
-
-  status = NSS_STATUS_SUCCESS;
-
-  __libc_lock_lock (lock);
-
-  if (result != NULL)
-    {
-      nis_freeresult (result);
-      result = NULL;
-    }
-
-  if (_nss_create_tablename (&err) != NSS_STATUS_SUCCESS)
-    status = NSS_STATUS_UNAVAIL;
-
-  __libc_lock_unlock (lock);
-
-  return status;
-}
-
-enum nss_status
-_nss_nisplus_endetherent (void)
-{
-  __libc_lock_lock (lock);
-
-  if (result != NULL)
-    {
-      nis_freeresult (result);
-      result = NULL;
-    }
-
-  __libc_lock_unlock (lock);
-
-  return NSS_STATUS_SUCCESS;
-}
-
-static enum nss_status
-internal_nisplus_getetherent_r (struct etherent *ether, char *buffer,
-				size_t buflen, int *errnop)
-{
-  if (tablename_val == NULL)
-    {
-      enum nss_status status = _nss_create_tablename (errnop);
-
-      if (status != NSS_STATUS_SUCCESS)
-	return status;
-    }
-
-  /* Get the next entry until we found a correct one. */
-  int parse_res;
-  do
-    {
-      nis_result *saved_result;
-
-      if (result == NULL)
-	{
-	  saved_result = NULL;
-	  result = nis_first_entry (tablename_val);
-	  if (result == NULL)
-	    {
-	      *errnop = errno;
-	      return NSS_STATUS_TRYAGAIN;
-	    }
-	  if (niserr2nss (result->status) != NSS_STATUS_SUCCESS)
-	    return niserr2nss (result->status);
-	}
-      else
-	{
-	  saved_result = result;
-	  result = nis_next_entry (tablename_val, &result->cookie);
-	  if (result == NULL)
-	    {
-	      *errnop = errno;
-	      return NSS_STATUS_TRYAGAIN;
-	    }
-	  if (niserr2nss (result->status) != NSS_STATUS_SUCCESS)
-	    {
-	      nis_freeresult (saved_result);
-	      return niserr2nss (result->status);
-	    }
-	}
-
-      parse_res = _nss_nisplus_parse_etherent (result, ether, buffer,
-					       buflen, errnop);
-      if (parse_res == -1)
-	{
-	  nis_freeresult (result);
-	  result = saved_result;
-	  return NSS_STATUS_TRYAGAIN;
-	}
-
-      if (saved_result != NULL)
-	nis_freeresult (saved_result);
-
-    }
-  while (!parse_res);
-
-  return NSS_STATUS_SUCCESS;
-}
-
-enum nss_status
-_nss_nisplus_getetherent_r (struct etherent *result, char *buffer,
-			    size_t buflen, int *errnop)
-{
-  int status;
-
-  __libc_lock_lock (lock);
-
-  status = internal_nisplus_getetherent_r (result, buffer, buflen, errnop);
-
-  __libc_lock_unlock (lock);
-
-  return status;
-}
-
-enum nss_status
-_nss_nisplus_gethostton_r (const char *name, struct etherent *eth,
-			   char *buffer, size_t buflen, int *errnop)
-{
-  if (tablename_val == NULL)
-    {
-      enum nss_status status = _nss_create_tablename (errnop);
-
-      if (status != NSS_STATUS_SUCCESS)
-	return status;
-    }
-
-  if (name == NULL)
-    {
-      *errnop = EINVAL;
-      return NSS_STATUS_UNAVAIL;
-    }
-
-  char buf[strlen (name) + 9 + tablename_len];
-  int olderr = errno;
-
-  snprintf (buf, sizeof (buf), "[name=%s],%s", name, tablename_val);
-
-  nis_result *result = nis_list (buf, FOLLOW_PATH | FOLLOW_LINKS | USE_DGRAM,
-				 NULL, NULL);
-
-  if (result == NULL)
-    {
-      *errnop = ENOMEM;
-      return NSS_STATUS_TRYAGAIN;
-    }
-
-  if (__glibc_unlikely (niserr2nss (result->status) != NSS_STATUS_SUCCESS))
-    {
-      enum nss_status status = niserr2nss (result->status);
-      nis_freeresult (result);
-      return status;
-    }
-
-  int parse_res = _nss_nisplus_parse_etherent (result, eth, buffer,
-					       buflen, errnop);
-
-  /* We do not need the lookup result anymore.  */
-  nis_freeresult (result);
-
-  if (__glibc_unlikely (parse_res < 1))
-    {
-      __set_errno (olderr);
-
-      if (parse_res == -1)
-	return NSS_STATUS_TRYAGAIN;
-
-      return NSS_STATUS_NOTFOUND;
-    }
-
-  return NSS_STATUS_SUCCESS;
-}
-
-enum nss_status
-_nss_nisplus_getntohost_r (const struct ether_addr *addr, struct etherent *eth,
-			   char *buffer, size_t buflen, int *errnop)
-{
-  if (tablename_val == NULL)
-    {
-      __libc_lock_lock (lock);
-
-      enum nss_status status = _nss_create_tablename (errnop);
-
-      __libc_lock_unlock (lock);
-
-      if (status != NSS_STATUS_SUCCESS)
-	return status;
-    }
-
-  if (addr == NULL)
-    {
-      *errnop = EINVAL;
-      return NSS_STATUS_UNAVAIL;
-    }
-
-  char buf[26 + tablename_len];
-
-  snprintf (buf, sizeof (buf),
-	    "[addr=%" PRIx8 ":%" PRIx8 ":%" PRIx8 ":%" PRIx8 ":%" PRIx8
-	    ":%" PRIx8 "],%s",
-	    addr->ether_addr_octet[0], addr->ether_addr_octet[1],
-	    addr->ether_addr_octet[2], addr->ether_addr_octet[3],
-	    addr->ether_addr_octet[4], addr->ether_addr_octet[5],
-	    tablename_val);
-
-  nis_result *result = nis_list (buf, FOLLOW_PATH | FOLLOW_LINKS | USE_DGRAM,
-				 NULL, NULL);
-
-  if (result == NULL)
-    {
-      *errnop = ENOMEM;
-      return NSS_STATUS_TRYAGAIN;
-    }
-
-  if (__glibc_unlikely (niserr2nss (result->status) != NSS_STATUS_SUCCESS))
-    {
-      enum nss_status status = niserr2nss (result->status);
-      nis_freeresult (result);
-      return status;
-    }
-
-  int parse_res = _nss_nisplus_parse_etherent (result, eth, buffer,
-					       buflen, errnop);
-
-  /* We do not need the lookup result anymore.  */
-  nis_freeresult (result);
-
-  if (__glibc_unlikely (parse_res < 1))
-    {
-      if (parse_res == -1)
-	return NSS_STATUS_TRYAGAIN;
-
-      return NSS_STATUS_NOTFOUND;
-    }
-
-  return NSS_STATUS_SUCCESS;
-}