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, 343 deletions

diff --git a/nis/nss_nis/nis-initgroups.c b/nis/nss_nis/nis-initgroups.c
deleted file mode 100644
index 9dc945a..0000000
--- a/nis/nss_nis/nis-initgroups.c
+++ /dev/null
@@ -1,343 +0,0 @@
-/* Copyright (C) 1998-2020 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-   Contributed by Thorsten Kukuk <kukuk@suse.de>, 1998.
-
-   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 <pwd.h>
-#include <string.h>
-#include <unistd.h>
-#include <rpcsvc/yp.h>
-#include <rpcsvc/ypclnt.h>
-#include <sys/param.h>
-#include <scratch_buffer.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>
-
-
-static enum nss_status
-internal_setgrent (char *domainname, intern_t *intern)
-{
-  struct ypall_callback ypcb;
-  enum nss_status status;
-
-  ypcb.foreach = _nis_saveit;
-  ypcb.data = (char *) intern;
-  status = yperr2nss (yp_all (domainname, "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;
-}
-
-
-static enum nss_status
-internal_getgrent_r (struct group *grp, char *buffer, size_t buflen,
-		     int *errnop, intern_t *intern)
-{
-  if (intern->start == NULL)
-    return NSS_STATUS_NOTFOUND;
-
-  /* Get the next entry until we found a correct one. */
-  int parse_res;
-  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;
-	}
-
-      char *p;
-      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_grent (p, grp, (void *) buffer, buflen,
-					  errnop);
-      if (__glibc_unlikely (parse_res == -1))
-        return NSS_STATUS_TRYAGAIN;
-
-      intern->offset += len;
-    }
-  while (!parse_res);
-
-  return NSS_STATUS_SUCCESS;
-}
-
-
-static int
-get_uid (const char *user, uid_t *uidp)
-{
-  struct scratch_buffer tmpbuf;
-  scratch_buffer_init (&tmpbuf);
-
-  while (1)
-    {
-      struct passwd result;
-      struct passwd *resp;
-
-      int r = getpwnam_r (user, &result, tmpbuf.data, tmpbuf.length, &resp);
-      if (r == 0 && resp != NULL)
-	{
-	  *uidp = resp->pw_uid;
-	  scratch_buffer_free (&tmpbuf);
-	  return 0;
-	}
-
-      if (r != ERANGE)
-	break;
-
-      if (!scratch_buffer_grow (&tmpbuf))
-	return 1;
-    }
-
-  scratch_buffer_free (&tmpbuf);
-  return 1;
-}
-
-
-static enum nss_status
-initgroups_netid (uid_t uid, gid_t group, long int *start, long int *size,
-		  gid_t **groupsp, long int limit, int *errnop,
-		  const char *domainname)
-{
-  /* Limit domainname length to the maximum size of an RPC packet.  */
-  if (strlen (domainname) > UDPMSGSIZE)
-    {
-      *errnop = ERANGE;
-      return NSS_STATUS_UNAVAIL;
-    }
-
-  /* Prepare the key.  The form is "unix.UID@DOMAIN" with the UID and
-     DOMAIN field filled in appropriately.  */
-  char key[sizeof ("unix.@") + sizeof (uid_t) * 3 + strlen (domainname)];
-  ssize_t keylen = snprintf (key, sizeof (key), "unix.%lu@%s",
-			     (unsigned long int) uid, domainname);
-
-  char *result;
-  int reslen;
-  int yperr = yp_match (domainname, "netid.byname", key, keylen, &result,
-			&reslen);
-  if (__glibc_unlikely (yperr != YPERR_SUCCESS))
-    return yperr2nss (yperr);
-
-  /* Parse the result: following the colon is a comma separated list of
-     group IDs.  */
-  char *cp = strchr (result, ':');
-  if (cp == NULL)
-    {
-    errout:
-      free (result);
-      return NSS_STATUS_NOTFOUND;
-    }
-  /* Skip the colon.  */
-  ++cp;
-
-  gid_t *groups = *groupsp;
-  while (*cp != '\0')
-    {
-      char *endp;
-      unsigned long int gid = strtoul (cp, &endp, 0);
-      if (cp == endp)
-	goto errout;
-      if (*endp == ',')
-	++endp;
-      else if (*endp != '\0')
-	goto errout;
-      cp = endp;
-
-      if (gid == group)
-	/* We do not need this group again.  */
-	continue;
-
-      /* Insert this group.  */
-      if (*start == *size)
-	{
-	  /* Need a bigger buffer.  */
-	  long int newsize;
-
-	  if (limit > 0 && *size == limit)
-	    /* We reached the maximum.  */
-	    break;
-
-	  if (limit <= 0)
-	    newsize = 2 * *size;
-	  else
-	    newsize = MIN (limit, 2 * *size);
-
-	  gid_t *newgroups = realloc (groups, newsize * sizeof (*groups));
-	  if (newgroups == NULL)
-	    goto errout;
-	  *groupsp = groups = newgroups;
-	  *size = newsize;
-	}
-
-      groups[*start] = gid;
-      *start += 1;
-    }
-
-  free (result);
-
-  return NSS_STATUS_SUCCESS;
-}
-
-
-enum nss_status
-_nss_nis_initgroups_dyn (const char *user, gid_t group, long int *start,
-			 long int *size, gid_t **groupsp, long int limit,
-			 int *errnop)
-{
-  /* We always need the domain name.  */
-  char *domainname;
-  if (yp_get_default_domain (&domainname))
-    return NSS_STATUS_UNAVAIL;
-
-  /* Check whether we are supposed to use the netid.byname map.  */
-  if (_nsl_default_nss () & NSS_FLAG_NETID_AUTHORITATIVE)
-    {
-      /* We need the user ID.  */
-      uid_t uid;
-
-      if (get_uid (user, &uid) == 0
-	  && initgroups_netid (uid, group, start, size, groupsp, limit,
-			       errnop, domainname) == NSS_STATUS_SUCCESS)
-	return NSS_STATUS_SUCCESS;
-    }
-
-  struct group grpbuf, *g;
-  enum nss_status status;
-  intern_t intern = { NULL, NULL, 0 };
-  gid_t *groups = *groupsp;
-
-  status = internal_setgrent (domainname, &intern);
-  if (status != NSS_STATUS_SUCCESS)
-    return status;
-
-  struct scratch_buffer tmpbuf;
-  scratch_buffer_init (&tmpbuf);
-
-  while (1)
-    {
-      while ((status =
-	      internal_getgrent_r (&grpbuf, tmpbuf.data, tmpbuf.length, errnop,
-				   &intern)) == NSS_STATUS_TRYAGAIN
-             && *errnop == ERANGE)
-	if (!scratch_buffer_grow (&tmpbuf))
-	  {
-	    status = NSS_STATUS_TRYAGAIN;
-	    goto done;
-	  }
-
-      if (status != NSS_STATUS_SUCCESS)
-	{
-	  if (status == NSS_STATUS_NOTFOUND)
-	    status = NSS_STATUS_SUCCESS;
-	  goto done;
-	}
-
-      g = &grpbuf;
-      if (g->gr_gid != group)
-        {
-          char **m;
-
-          for (m = g->gr_mem; *m != NULL; ++m)
-            if (strcmp (*m, user) == 0)
-              {
-                /* Matches user.  Insert this group.  */
-                if (*start == *size)
-                  {
-                    /* Need a bigger buffer.  */
-		    gid_t *newgroups;
-		    long int newsize;
-
-		    if (limit > 0 && *size == limit)
-		      /* We reached the maximum.  */
-		      goto done;
-
-		    if (limit <= 0)
-		      newsize = 2 * *size;
-		    else
-		      newsize = MIN (limit, 2 * *size);
-
-		    newgroups = realloc (groups, newsize * sizeof (*groups));
-		    if (newgroups == NULL)
-		      {
-			status = NSS_STATUS_TRYAGAIN;
-			*errnop = errno;
-			goto done;
-		      }
-		    *groupsp = groups = newgroups;
-                    *size = newsize;
-                  }
-
-                groups[*start] = g->gr_gid;
-		*start += 1;
-
-                break;
-              }
-        }
-    }
-
-done:
-  while (intern.start != NULL)
-    {
-      intern.next = intern.start;
-      intern.start = intern.start->next;
-      free (intern.next);
-    }
-  scratch_buffer_free (&tmpbuf);
-
-  return status;
-}