Remove 'grp' and merge into 'nss' and 'posix'

The majority of grp routines are entry points for nss functionality.
This commit removes the 'grp' subdirectory and moves all nss-relevant
functionality and all tests to 'nss', and the 'setgroups' stub into
'posix' (alongside the 'getgroups' stub).  References to grp/ are
accordingly changed.  In addition, compat-initgroups.c, a fallback
implementation of initgroups is renamed to initgroups-fallback.c so that
the build system does not confuse it for nss_compat/compat-initgroups.c.

Build time improves very slightly; e.g. down from an average of 45.5s to
44.5s on an 8-thread mobile x86_64 CPU.
Reviewed-by: Adhemerval Zanella  <adhemerval.zanella@linaro.org>

1 files changed, 0 insertions, 126 deletions

diff --git a/grp/tst_fgetgrent.c b/grp/tst_fgetgrent.c
deleted file mode 100644
index be41191..0000000
--- a/grp/tst_fgetgrent.c
+++ /dev/null
@@ -1,126 +0,0 @@
-/* Copyright (C) 1999-2023 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-
-   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 <grp.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <sys/types.h>
-#include <unistd.h>
-
-static int errors;
-
-static void
-write_users (FILE *f, int large_pos, int pos)
-{
-  int i;
-
-  if (pos == large_pos)
-    {
-      if (large_pos == 3)
-	fprintf (f, ":three");
-
-      /* we need more than 2048 bytes for proper testing.  */
-      for (i = 0; i < 500; i++)
-	fprintf (f, ",user%03d", i);
-    }
-  fprintf (f, "\n");
-
-}
-
-static void
-write_group (const char *filename, int pos)
-{
-  FILE *f;
-
-  f = fopen (filename, "w");
-  fprintf (f, "one:x:1:one");
-  write_users (f, pos, 1);
-  fprintf (f, "two:x:2:two");
-  write_users (f, pos, 2);
-  fprintf (f, "three:x:3");
-  write_users (f, pos, 3);
-  fclose (f);
-}
-
-static void
-test_entry (const char *name, gid_t gid, struct group *g)
-{
-  if (!g)
-    {
-      printf ("Error: Entry is empty\n");
-      errors++;
-      return;
-    }
-
-  if ((g->gr_gid == gid) && (strcmp (g->gr_name, name) == 0))
-    printf ("Ok: %s: %d\n", g->gr_name, g->gr_gid);
-  else
-    {
-      printf ("Error: %s: %d should be: %s: %d\n", g->gr_name, g->gr_gid,
-	      name, gid);
-      errors++;
-    }
-}
-
-
-static void
-test_fgetgrent (const char *filename)
-{
-  struct group *g;
-  FILE *f;
-
-  f = fopen (filename,"r");
-
-  g = fgetgrent (f);
-  test_entry ("one", 1, g);
-  g = fgetgrent (f);
-  test_entry ("two", 2, g);
-  g = fgetgrent (f);
-  test_entry ("three", 3, g);
-  fclose (f);
-}
-
-
-int
-main (int argc, char *argv[])
-{
-  char file[] = "/tmp/tst_fgetgrent.XXXXXX";
-  int fd = mkstemp (file);
-  if (fd == -1)
-    {
-      printf ("mkstemp failed: %m\n");
-      return 1;
-    }
-  close (fd);
-  int i = 0;
-
-  if (argc > 1)
-    i = atoi (argv[1]);
-  if (i > 3)
-    i = 3;
-  if (i)
-    printf ("Large group is group: %d\n", i);
-  else
-    printf ("Not using a large group\n");
-  write_group (file, i);
-  test_fgetgrent (file);
-
-  remove (file);
-
-  return (errors != 0);
-}