1  /* Test group merging.
       2     Copyright (C) 2017-2023 Free Software Foundation, Inc.
       3     This file is part of the GNU C Library.
       4  
       5     The GNU C Library is free software; you can redistribute it and/or
       6     modify it under the terms of the GNU Lesser General Public
       7     License as published by the Free Software Foundation; either
       8     version 2.1 of the License, or (at your option) any later version.
       9  
      10     The GNU C Library is distributed in the hope that it will be useful,
      11     but WITHOUT ANY WARRANTY; without even the implied warranty of
      12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      13     Lesser General Public License for more details.
      14  
      15     You should have received a copy of the GNU Lesser General Public
      16     License along with the GNU C Library; if not, see
      17     <https://www.gnu.org/licenses/>.  */
      18  
      19  #include <nss.h>
      20  #include <stdio.h>
      21  #include <stdlib.h>
      22  #include <string.h>
      23  
      24  #include <support/support.h>
      25  
      26  #include "nss_test.h"
      27  
      28  /* The name choices here are arbitrary, aside from the merge_1 list
      29     needing to be an expected merge of group_1 and group_2.  */
      30  
      31  static const char *group_1[] = {
      32    "foo", "bar", NULL
      33  };
      34  
      35  static const char *group_2[] = {
      36    "foo", "dick", "harry", NULL
      37  };
      38  
      39  /* Note that deduplication is NOT supposed to happen.  */
      40  static const char *merge_1[] = {
      41    "foo", "bar", "foo", "dick", "harry", NULL
      42  };
      43  
      44  static const char *group_4[] = {
      45    "fred", "wilma", NULL
      46  };
      47  
      48  /* This is the data we're giving the service.  */
      49  static struct group group_table_data1[] = {
      50    GRP_N(1, "name1", group_1),
      51    GRP(2),
      52    GRP_LAST ()
      53  };
      54  
      55  /* This is the data we're giving the service.  */
      56  static struct group group_table_data2[] = {
      57    GRP_N(1, "name1", group_2),
      58    GRP(4),
      59    GRP_LAST ()
      60  };
      61  
      62  /* This is the data we compare against.  */
      63  static struct group group_table[] = {
      64    GRP_N(1, "name1", merge_1),
      65    GRP(2),
      66    GRP(4),
      67    GRP_LAST ()
      68  };
      69  
      70  void
      71  _nss_test1_init_hook(test_tables *t)
      72  {
      73    t->grp_table = group_table_data1;
      74  }
      75  
      76  void
      77  _nss_test2_init_hook(test_tables *t)
      78  {
      79    t->grp_table = group_table_data2;
      80  }
      81  
      82  static int
      83  do_test (void)
      84  {
      85    int retval = 0;
      86    int i;
      87    struct group *g = NULL;
      88    uintptr_t align_mask;
      89  
      90    __nss_configure_lookup ("group", "test1 [SUCCESS=merge] test2");
      91  
      92    align_mask = __alignof__ (struct group *) - 1;
      93  
      94    setgrent ();
      95  
      96    for (i = 0; group_table[i].gr_gid; ++i)
      97      {
      98        g = getgrgid (group_table[i].gr_gid);
      99        if (g)
     100  	{
     101  	  retval += compare_groups (i, g, & group_table[i]);
     102  	  if ((uintptr_t)g & align_mask)
     103  	    {
     104  	      printf("FAIL: [%d] unaligned group %p\n", i, g);
     105  	      ++retval;
     106  	    }
     107  	  if ((uintptr_t)(g->gr_mem) & align_mask)
     108  	    {
     109  	      printf("FAIL: [%d] unaligned member list %p\n", i, g->gr_mem);
     110  	      ++retval;
     111  	    }
     112  	}
     113        else
     114  	{
     115  	  printf ("FAIL: [%d] group %u.%s not found\n", i,
     116  	      group_table[i].gr_gid, group_table[i].gr_name);
     117  	  ++retval;
     118  	}
     119      }
     120  
     121    endgrent ();
     122  
     123  #define EXPECTED 0
     124    if (retval == EXPECTED)
     125      {
     126        if (retval > 0)
     127  	printf ("PASS: Found %d expected errors\n", retval);
     128        return 0;
     129      }
     130    else
     131      {
     132        printf ("FAIL: Found %d errors, expected %d\n", retval, EXPECTED);
     133        return 1;
     134      }
     135  }
     136  
     137  #include <support/test-driver.c>