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, 292 deletions

diff --git a/nis/nss_nis/nis-ethers.c b/nis/nss_nis/nis-ethers.c
deleted file mode 100644
index c7441ff6b5..0000000000
--- a/nis/nss_nis/nis-ethers.c
+++ /dev/null
@@ -1,292 +0,0 @@
-/* Copyright (C) 1996-2020 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-   Contributed by Thorsten Kukuk <kukuk@suse.de>, 1996.
-
-   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 <nss.h>
-#include <ctype.h>
-#include <errno.h>
-#include <string.h>
-#include <libc-lock.h>
-#include <rpcsvc/yp.h>
-#include <rpcsvc/ypclnt.h>
-#include <netinet/ether.h>
-#include <netinet/if_ether.h>
-
-#include "nss-nis.h"
-
-/* Protect global state against multiple changers */
-__libc_lock_define_initialized (static, lock)
-
-/* Get the declaration of the parser function.  */
-#define ENTNAME etherent
-#define STRUCTURE etherent
-#define EXTERN_PARSER
-#include <nss/nss_files/files-parse.c>
-
-struct response
-{
-  struct response *next;
-  char val[0];
-};
-
-static struct response *start;
-static struct response *next;
-
-static int
-saveit (int instatus, char *inkey, int inkeylen, char *inval,
-	int invallen, char *indata)
-{
-  if (instatus != YP_TRUE)
-    return 1;
-
-  if (inkey && inkeylen > 0 && inval && invallen > 0)
-    {
-      struct response *newp = malloc (sizeof (struct response) + invallen + 1);
-      if (newp == NULL)
-	return 1; /* We have no error code for out of memory */
-
-      if (start == NULL)
-	start = newp;
-      else
-	next->next = newp;
-      next = newp;
-
-      newp->next = NULL;
-      *((char *) mempcpy (newp->val, inval, invallen)) = '\0';
-    }
-
-  return 0;
-}
-
-static void
-internal_nis_endetherent (void)
-{
-  while (start != NULL)
-    {
-      next = start;
-      start = start->next;
-      free (next);
-    }
-}
-
-enum nss_status
-_nss_nis_endetherent (void)
-{
-  __libc_lock_lock (lock);
-
-  internal_nis_endetherent ();
-  next = NULL;
-
-  __libc_lock_unlock (lock);
-
-  return NSS_STATUS_SUCCESS;
-}
-
-static enum nss_status
-internal_nis_setetherent (void)
-{
-  char *domainname;
-  struct ypall_callback ypcb;
-  enum nss_status status;
-
-  yp_get_default_domain (&domainname);
-
-  internal_nis_endetherent ();
-
-  ypcb.foreach = saveit;
-  ypcb.data = NULL;
-  status = yperr2nss (yp_all (domainname, "ethers.byname", &ypcb));
-  next = start;
-
-  return status;
-}
-
-enum nss_status
-_nss_nis_setetherent (int stayopen)
-{
-  enum nss_status result;
-
-  __libc_lock_lock (lock);
-
-  result = internal_nis_setetherent ();
-
-  __libc_lock_unlock (lock);
-
-  return result;
-}
-
-static enum nss_status
-internal_nis_getetherent_r (struct etherent *eth, char *buffer, size_t buflen,
-			    int *errnop)
-{
-  struct parser_data *data = (void *) buffer;
-  int parse_res;
-
-  if (start == NULL)
-    internal_nis_setetherent ();
-
-  /* Get the next entry until we found a correct one. */
-  do
-    {
-      char *p;
-
-      if (next == NULL)
-	return NSS_STATUS_NOTFOUND;
-
-      p = strncpy (buffer, next->val, buflen);
-
-      while (isspace (*p))
-        ++p;
-
-      parse_res = _nss_files_parse_etherent (p, eth, data, buflen, errnop);
-      if (parse_res == -1)
-	return NSS_STATUS_TRYAGAIN;
-      next = next->next;
-    }
-  while (!parse_res);
-
-  return NSS_STATUS_SUCCESS;
-}
-
-enum nss_status
-_nss_nis_getetherent_r (struct etherent *result, char *buffer, size_t buflen,
-			int *errnop)
-{
-  int status;
-
-  __libc_lock_lock (lock);
-
-  status = internal_nis_getetherent_r (result, buffer, buflen, errnop);
-
-  __libc_lock_unlock (lock);
-
-  return status;
-}
-
-enum nss_status
-_nss_nis_gethostton_r (const char *name, struct etherent *eth,
-		       char *buffer, size_t buflen, int *errnop)
-{
-  if (name == NULL)
-    {
-      *errnop = EINVAL;
-      return NSS_STATUS_UNAVAIL;
-    }
-
-  char *domain;
-  if (__glibc_unlikely (yp_get_default_domain (&domain)))
-    return NSS_STATUS_UNAVAIL;
-
-  char *result;
-  int len;
-  int yperr = yp_match (domain, "ethers.byname", name, strlen (name), &result,
-			&len);
-
-  if (__glibc_unlikely (yperr != YPERR_SUCCESS))
-    {
-      enum nss_status retval = yperr2nss (yperr);
-
-      if (retval == NSS_STATUS_TRYAGAIN)
-        *errnop = errno;
-      return retval;
-    }
-
-  if (__glibc_unlikely ((size_t) (len + 1) > buflen))
-    {
-      free (result);
-      *errnop = ERANGE;
-      return NSS_STATUS_TRYAGAIN;
-    }
-
-  char *p = strncpy (buffer, result, len);
-  buffer[len] = '\0';
-  while (isspace (*p))
-    ++p;
-  free (result);
-
-  int parse_res = _nss_files_parse_etherent (p, eth, (void *) buffer, buflen,
-					     errnop);
-  if (__glibc_unlikely (parse_res < 1))
-    {
-      if (parse_res == -1)
-	return NSS_STATUS_TRYAGAIN;
-      else
-	return NSS_STATUS_NOTFOUND;
-    }
-  return NSS_STATUS_SUCCESS;
-}
-
-enum nss_status
-_nss_nis_getntohost_r (const struct ether_addr *addr, struct etherent *eth,
-		       char *buffer, size_t buflen, int *errnop)
-{
-  if (addr == NULL)
-    {
-      *errnop = EINVAL;
-      return NSS_STATUS_UNAVAIL;
-    }
-
-  char *domain;
-  if (__glibc_unlikely (yp_get_default_domain (&domain)))
-    return NSS_STATUS_UNAVAIL;
-
-  char buf[33];
-  int nlen = snprintf (buf, sizeof (buf), "%x:%x:%x:%x:%x:%x",
-		      (int) addr->ether_addr_octet[0],
-		      (int) addr->ether_addr_octet[1],
-		      (int) addr->ether_addr_octet[2],
-		      (int) addr->ether_addr_octet[3],
-		      (int) addr->ether_addr_octet[4],
-		      (int) addr->ether_addr_octet[5]);
-
-  char *result;
-  int len;
-  int yperr = yp_match (domain, "ethers.byaddr", buf, nlen, &result, &len);
-
-  if (__glibc_unlikely (yperr != YPERR_SUCCESS))
-    {
-      enum nss_status retval = yperr2nss (yperr);
-
-      if (retval == NSS_STATUS_TRYAGAIN)
-        *errnop = errno;
-      return retval;
-    }
-
-  if (__glibc_unlikely ((size_t) (len + 1) > buflen))
-    {
-      free (result);
-      *errnop = ERANGE;
-      return NSS_STATUS_TRYAGAIN;
-    }
-
-  char *p = strncpy (buffer, result, len);
-  buffer[len] = '\0';
-  while (isspace (*p))
-    ++p;
-  free (result);
-
-  int parse_res = _nss_files_parse_etherent (p, eth, (void *) buffer, buflen,
-					     errnop);
-  if (__glibc_unlikely (parse_res < 1))
-    {
-      if (parse_res == -1)
-	return NSS_STATUS_TRYAGAIN;
-      else
-	return NSS_STATUS_NOTFOUND;
-    }
-  return NSS_STATUS_SUCCESS;
-}