nptl/tst-oddstacklimit.c

   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"