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, 279 deletions

diff --git a/nis/nss_nis/nis-rpc.c b/nis/nss_nis/nis-rpc.c
deleted file mode 100644
index b118e1b01c..0000000000
--- a/nis/nss_nis/nis-rpc.c
+++ /dev/null
@@ -1,279 +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 <netdb.h>
-#include <ctype.h>
-#include <errno.h>
-#include <string.h>
-#include <libc-lock.h>
-#include <rpcsvc/yp.h>
-#include <rpcsvc/ypclnt.h>
-
-#include "nss-nis.h"
-
-/* Get the declaration of the parser function.  */
-#define ENTNAME rpcent
-#define EXTERN_PARSER
-#include <nss/nss_files/files-parse.c>
-
-__libc_lock_define_initialized (static, lock)
-
-static intern_t intern;
-
-
-static void
-internal_nis_endrpcent (intern_t *intern)
-{
-  struct response_t *curr = intern->next;
-
-  while (curr != NULL)
-    {
-      struct response_t *last = curr;
-      curr = curr->next;
-      free (last);
-    }
-
-  intern->next = intern->start = NULL;
-}
-
-static enum nss_status
-internal_nis_setrpcent (intern_t *intern)
-{
-  char *domainname;
-  struct ypall_callback ypcb;
-  enum nss_status status;
-
-  if (yp_get_default_domain (&domainname))
-    return NSS_STATUS_UNAVAIL;
-
-  internal_nis_endrpcent (intern);
-
-  ypcb.foreach = _nis_saveit;
-  ypcb.data = (char *) intern;
-  status = yperr2nss (yp_all (domainname, "rpc.bynumber", &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_setrpcent (int stayopen)
-{
-  enum nss_status status;
-
-  __libc_lock_lock (lock);
-
-  status = internal_nis_setrpcent (&intern);
-
-  __libc_lock_unlock (lock);
-
-  return status;
-}
-
-enum nss_status
-_nss_nis_endrpcent (void)
-{
-  __libc_lock_lock (lock);
-
-  internal_nis_endrpcent (&intern);
-
-  __libc_lock_unlock (lock);
-
-  return NSS_STATUS_SUCCESS;
-}
-
-static enum nss_status
-internal_nis_getrpcent_r (struct rpcent *rpc, char *buffer, size_t buflen,
-			  int *errnop, intern_t *intern)
-{
-  struct parser_data *pdata = (void *) buffer;
-  int parse_res;
-  char *p;
-
-  if (intern->start == NULL)
-    internal_nis_setrpcent (intern);
-
-  if (intern->next == NULL)
-    /* Not one entry in the map.  */
-    return NSS_STATUS_NOTFOUND;
-
-  /* Get the next entry until we found a correct one. */
-  do
-    {
-      struct response_t *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 (p = &bucket->mem[intern->offset]; isspace (*p); ++p)
-        ++intern->offset;
-
-      size_t len = strlen (p) + 1;
-      if (__glibc_unlikely (len > buflen))
-	{
-	  *errnop = ERANGE;
-	  return NSS_STATUS_TRYAGAIN;
-	}
-
-      /* We unfortunately have to copy the data in the user-provided
-	 buffer because that buffer might be around for a very long
-	 time and the servent structure must remain valid.  If we would
-	 rely on the BUCKET memory the next 'setservent' or 'endservent'
-	 call would destroy it.
-
-	 The important thing is that it is a single NUL-terminated
-	 string.  This is what the parsing routine expects.  */
-      p = memcpy (buffer, &bucket->mem[intern->offset], len);
-
-      parse_res = _nss_files_parse_rpcent (p, rpc, pdata, buflen, errnop);
-      if (__glibc_unlikely (parse_res == -1))
-	return NSS_STATUS_TRYAGAIN;
-
-      intern->offset += len;
-    }
-  while (!parse_res);
-
-  return NSS_STATUS_SUCCESS;
-}
-
-enum nss_status
-_nss_nis_getrpcent_r (struct rpcent *rpc, char *buffer, size_t buflen,
-		      int *errnop)
-{
-  enum nss_status status;
-
-  __libc_lock_lock (lock);
-
-  status = internal_nis_getrpcent_r (rpc, buffer, buflen, errnop, &intern);
-
-  __libc_lock_unlock (lock);
-
-  return status;
-}
-
-enum nss_status
-_nss_nis_getrpcbyname_r (const char *name, struct rpcent *rpc,
-			 char *buffer, size_t buflen, int *errnop)
-{
-  if (name == NULL)
-    {
-      *errnop = EINVAL;
-      return NSS_STATUS_UNAVAIL;
-    }
-
-  intern_t data = { NULL, NULL, 0 };
-  enum nss_status status = internal_nis_setrpcent (&data);
-  if (__glibc_unlikely (status != NSS_STATUS_SUCCESS))
-    return status;
-
-  int found = 0;
-  while (!found
-         && ((status = internal_nis_getrpcent_r (rpc, buffer, buflen, errnop,
-						 &data)) == NSS_STATUS_SUCCESS))
-    {
-      if (strcmp (rpc->r_name, name) == 0)
-	found = 1;
-      else
-	{
-	  int i = 0;
-
-	  while (rpc->r_aliases[i] != NULL)
-	    {
-	      if (strcmp (rpc->r_aliases[i], name) == 0)
-		{
-		  found = 1;
-		  break;
-		}
-	      else
-		++i;
-	    }
-	}
-    }
-
-  internal_nis_endrpcent (&data);
-
-  if (__glibc_unlikely (!found && status == NSS_STATUS_SUCCESS))
-    return NSS_STATUS_NOTFOUND;
-
-  return status;
-}
-
-enum nss_status
-_nss_nis_getrpcbynumber_r (int number, struct rpcent *rpc,
-			   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 = snprintf (buf, sizeof (buf), "%d", number);
-
-  char *result;
-  int len;
-  int yperr = yp_match (domain, "rpc.bynumber", 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_rpcent (p, rpc, (void  *) buffer, buflen,
-					   errnop);
-  if (__glibc_unlikely (parse_res < 1))
-    {
-      if (parse_res == -1)
-	return NSS_STATUS_TRYAGAIN;
-      else
-	return NSS_STATUS_NOTFOUND;
-    }
-  else
-    return NSS_STATUS_SUCCESS;
-}