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, 359 deletions

diff --git a/nis/nss_nis/nis-grp.c b/nis/nss_nis/nis-grp.c
deleted file mode 100644
index 74a8f82f9a..0000000000
--- a/nis/nss_nis/nis-grp.c
+++ /dev/null
@@ -1,359 +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 <ctype.h>
-#include <errno.h>
-#include <grp.h>
-#include <nss.h>
-#include <string.h>
-#include <libc-lock.h>
-#include <rpcsvc/yp.h>
-#include <rpcsvc/ypclnt.h>
-
-#include "nss-nis.h"
-#include <libnsl.h>
-
-/* Get the declaration of the parser function.  */
-#define ENTNAME grent
-#define STRUCTURE group
-#define EXTERN_PARSER
-#include <nss/nss_files/files-parse.c>
-
-/* Protect global state against multiple changers */
-__libc_lock_define_initialized (static, lock)
-
-static bool_t new_start = 1;
-static char *oldkey;
-static int oldkeylen;
-static intern_t intern;
-
-
-static void
-internal_nis_endgrent (void)
-{
-  new_start = 1;
-  if (oldkey != NULL)
-    {
-      free (oldkey);
-      oldkey = NULL;
-      oldkeylen = 0;
-    }
-
-  struct response_t *curr = intern.start;
-
-  while (curr != NULL)
-    {
-      struct response_t *last = curr;
-      curr = curr->next;
-      free (last);
-    }
-
-  intern.next = intern.start = NULL;
-}
-
-
-enum nss_status
-_nss_nis_endgrent (void)
-{
-  __libc_lock_lock (lock);
-
-  internal_nis_endgrent ();
-
-  __libc_lock_unlock (lock);
-
-  return NSS_STATUS_SUCCESS;
-}
-
-
-enum nss_status
-internal_nis_setgrent (void)
-{
-  /* We have to read all the data now.  */
-  char *domain;
-  if (__glibc_unlikely (yp_get_default_domain (&domain)))
-    return NSS_STATUS_UNAVAIL;
-
-  struct ypall_callback ypcb;
-
-  ypcb.foreach = _nis_saveit;
-  ypcb.data = (char *) &intern;
-  enum nss_status status = yperr2nss (yp_all (domain, "group.byname", &ypcb));
-
-
-  /* Mark the last buffer as full.  */
-  if (intern.next != NULL)
-    intern.next->size = intern.offset;
-
-  intern.next = intern.start;
-  intern.offset = 0;
-
-  return status;
-}
-
-
-enum nss_status
-_nss_nis_setgrent (int stayopen)
-{
-  enum nss_status result = NSS_STATUS_SUCCESS;
-
-  __libc_lock_lock (lock);
-
-  internal_nis_endgrent ();
-
-  if (_nsl_default_nss () & NSS_FLAG_SETENT_BATCH_READ)
-    result = internal_nis_setgrent ();
-
-  __libc_lock_unlock (lock);
-
-  return result;
-}
-
-
-static enum nss_status
-internal_nis_getgrent_r (struct group *grp, char *buffer, size_t buflen,
-			 int *errnop)
-{
-  /* If we read the entire database at setpwent time we just iterate
-     over the data we have in memory.  */
-  bool batch_read = intern.start != NULL;
-
-  char *domain = NULL;
-  if (!batch_read && __builtin_expect (yp_get_default_domain (&domain), 0))
-    return NSS_STATUS_UNAVAIL;
-
-  /* Get the next entry until we found a correct one. */
-  int parse_res;
-  do
-    {
-      char *result;
-      char *outkey;
-      int len;
-      int keylen;
-
-      if (batch_read)
-	{
-	  struct response_t *bucket;
-
-	handle_batch_read:
-	  bucket = intern.next;
-
-	  if (__glibc_unlikely (intern.offset >= bucket->size))
-	    {
-	      if (bucket->next == NULL)
-		return NSS_STATUS_NOTFOUND;
-
-	      /* We look at all the content in the current bucket.  Go on
-		 to the next.  */
-	      bucket = intern.next = bucket->next;
-	      intern.offset = 0;
-	    }
-
-	  for (result = &bucket->mem[intern.offset]; isspace (*result);
-	       ++result)
-	    ++intern.offset;
-
-	  len = strlen (result);
-	}
-      else
-	{
-	  int yperr;
-
-	  if (new_start)
-	    {
-	      /* Maybe we should read the database in one piece.  */
-	      if ((_nsl_default_nss () & NSS_FLAG_SETENT_BATCH_READ)
-		  && internal_nis_setgrent () == NSS_STATUS_SUCCESS
-		  && intern.start != NULL)
-		{
-		  batch_read = true;
-		  goto handle_batch_read;
-		}
-
-	      yperr = yp_first (domain, "group.byname", &outkey, &keylen,
-				&result, &len);
-	    }
-	  else
-	    yperr = yp_next (domain, "group.byname", oldkey, oldkeylen,
-			     &outkey, &keylen, &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))
-	{
-	  if (!batch_read)
-	    free (result);
-	  *errnop = ERANGE;
-	  return NSS_STATUS_TRYAGAIN;
-	}
-
-      char *p = strncpy (buffer, result, len);
-      buffer[len] = '\0';
-      while (isspace (*p))
-	++p;
-      if (!batch_read)
-	free (result);
-
-      parse_res = _nss_files_parse_grent (p, grp, (void *) buffer, buflen,
-					  errnop);
-      if (__glibc_unlikely (parse_res == -1))
-	{
-	  if (!batch_read)
-	    free (outkey);
-	  *errnop = ERANGE;
-	  return NSS_STATUS_TRYAGAIN;
-	}
-
-      if (batch_read)
-	intern.offset += len + 1;
-      else
-	{
-	  free (oldkey);
-	  oldkey = outkey;
-	  oldkeylen = keylen;
-	  new_start = 0;
-	}
-    }
-  while (parse_res < 1);
-
-  return NSS_STATUS_SUCCESS;
-}
-
-enum nss_status
-_nss_nis_getgrent_r (struct group *result, char *buffer, size_t buflen,
-		     int *errnop)
-{
-  int status;
-
-  __libc_lock_lock (lock);
-
-  status = internal_nis_getgrent_r (result, buffer, buflen, errnop);
-
-  __libc_lock_unlock (lock);
-
-  return status;
-}
-
-enum nss_status
-_nss_nis_getgrnam_r (const char *name, struct group *grp,
-		     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, "group.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_grent (p, grp, (void *) buffer, buflen,
-					  errnop);
-  if (__builtin_expect  (parse_res < 1, 0))
-    {
-      if (parse_res == -1)
-	return NSS_STATUS_TRYAGAIN;
-      else
-	return NSS_STATUS_NOTFOUND;
-    }
-  return NSS_STATUS_SUCCESS;
-}
-
-enum nss_status
-_nss_nis_getgrgid_r (gid_t gid, struct group *grp,
-		     char *buffer, size_t buflen, int *errnop)
-{
-  char *domain;
-  if (__glibc_unlikely (yp_get_default_domain (&domain)))
-    return NSS_STATUS_UNAVAIL;
-
-  char buf[32];
-  int nlen = sprintf (buf, "%lu", (unsigned long int) gid);
-
-  char *result;
-  int len;
-  int yperr = yp_match (domain, "group.bygid", 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_grent (p, grp, (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;
-}