1  /* Test NPTL with stack limit that is not a multiple of the page size.
       2     Copyright (C) 2012-2023 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 <errno.h>
      20  #include <stdio.h>
      21  #include <string.h>
      22  #include <sys/resource.h>
      23  #include <sys/wait.h>
      24  #include <stdlib.h>
      25  
      26  /* This sets the stack resource limit to 1023kb, which is not a multiple
      27     of the page size since every architecture's page size is > 1k.  */
      28  #ifndef ODD_STACK_LIMIT
      29  # define ODD_STACK_LIMIT (1023 * 1024)
      30  #endif
      31  
      32  static const char *command;
      33  
      34  static int
      35  do_test (void)
      36  {
      37    int ret;
      38    struct rlimit rlim;
      39  
      40    ret = getrlimit (RLIMIT_STACK, &rlim);
      41    if (ret != 0)
      42      {
      43        printf ("getrlimit failed: %s\n", strerror (errno));
      44        return 1;
      45      }
      46    rlim.rlim_cur = ODD_STACK_LIMIT;
      47    ret = setrlimit (RLIMIT_STACK, &rlim);
      48    if (ret != 0)
      49      {
      50        printf ("setrlimit failed: %s\n", strerror (errno));
      51        return 1;
      52      }
      53    ret = system (command);
      54    if (ret == -1)
      55      {
      56        printf ("system failed: %s\n", strerror (errno));
      57        return 1;
      58      }
      59    if (WIFEXITED (ret))
      60      return WEXITSTATUS (ret);
      61    else
      62      return 1;
      63  }
      64  
      65  #define OPT_COMMAND	10000
      66  #define CMDLINE_OPTIONS	\
      67    { "command", required_argument, NULL, OPT_COMMAND },
      68  #define CMDLINE_PROCESS	\
      69    case OPT_COMMAND:	\
      70      command = optarg;	\
      71      break;
      72  #define TEST_FUNCTION do_test ()
      73  #include "../test-skeleton.c"